JP2011148513A - Corrugated fiberboard box sealing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly and easily perform a sealing operation with a water adhesive tape with a simple structure and at a low cost. <P>SOLUTION: There is provided a conveying table 1 for placing a corrugated fiberboard box K and conveying it in a specified conveying direction A. In a channel part 2 formed along the conveying direction A at the center of a placing face 1a for placing the corrugated fiberboard box K on the conveying table 1, there are provided a delivering roller, a cutting part, a water coating part, and a pasting roller 7. There is provided a moving roller 8 capable of projecting upward from the placing face 1a and moving back and forth along the conveying direction A. By pushing out the corrugated fiberboard box K placed on the upstream side of the placing face 1a along the conveying direction A, and by forwarding c the moving roller 8 hitting against the front end face Ka of the corrugated fiberboard box K along the conveying direction A, the water adhesive tape cut in a specified length is stuck from the front end face Ka of the corrugated fiberboard box K through a butting end edge Kb of outer flaps K1 and K2 of the corrugated fiberboard box K to the back end face Kc of the corrugated fiberboard box K by the pasting roller 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a corrugated cardboard box sealing device, and in particular, can perform sealing work quickly and easily with a water tape having a simple structure and low cost.

  FIG. 13 shows a state in which the corrugated cardboard box K is sealed with the water glue tape t. The butt end of the outer flaps K1, K2 of the corrugated cardboard box K from the front end surface Ka of the cardboard box K is shown. It is pasted up to the rear end face Kc of the cardboard box K through the edge Kb.

  The water glue tape t is less expensive than the adhesive tape, but after applying water to generate adhesive strength, if it is not immediately applied to the cardboard box K, the adhesive strength is lost and it is applied to the cardboard box K. Therefore, it has been difficult to mechanize the sealing work with the water glue tape t.

  Conventionally, as described in Patent Document 1 and the like, a cardboard box sealing device using an adhesive tape that maintains adhesive strength has been proposed.

Japanese Patent Laid-Open No. 9-207243

  In the above-described conventional configuration, an expensive adhesive tape is used compared to the water glue tape t, so that the running cost is high. In addition, the corrugated cardboard box K is conveyed by a motor to perform the sealing work, which complicates the structure and increases the production cost.

  An object of the present invention is to provide a corrugated cardboard box sealing device that can quickly and easily perform a sealing operation with a water tape having a simple structure and at a low cost.

  In order to achieve the above object, the invention described in claim 1 is a cardboard box sealing device for sealing the butt edge Kb of the outer flaps K1, K2 of the cardboard box K with a water glue tape t. A transport base 1 for placing the box K and transporting it in the predetermined transport direction A is provided, and a groove portion along the transport direction A is provided at the center of the mounting surface 1a on which the cardboard box K of the transport base 1 is placed. 2 is formed, and a feeding roller 3 for feeding the water glue tape t and feeding it along the path R, a cutting part 4, a water application part 5, and a water glue tape t in the groove 2 are substantially U. A tape guide 6 that is bent into a letter shape and fed upward, and a sticking roller 7 that supports the water glue tape t are provided, projecting upward from the mounting surface 1a, and reciprocating along the transport direction A A movable body 8 is provided, and the movable body 8 and the transmission body An interlocking mechanism 9 for interlockingly connecting the roller 3 is provided, and a detector 10 for detecting the rear end face Kc of the cardboard box K conveyed on the placement surface 1a is provided, and upstream of the placement surface 1a. The cardboard box K placed on the cardboard box K is pushed out along the conveying direction A, and the moving body 8 that has come into contact with the front end surface Ka of the cardboard box K is advanced along the conveying direction A to be sent out via the interlocking mechanism 9. The water roller tape t is fed forward by feeding the water roller 3 forward, the water tape t is subjected to a water application treatment by the water application unit 5, and then sent to the application roller 7 through the tape guide 6. The tip of the glue tape t is affixed to the front end face Ka of the cardboard box K, and the water glue tape t is cut by the cutting part 4 based on the detection signal of the detector 10 that detects the rear end face Kc of the cardboard box K. Cut to a certain length The glue tape t is pasted from the front end face Ka of the cardboard box K to the rear end face Kc of the cardboard box K through the abutting edge Kb of the outer flaps K1, K2 of the cardboard box K by the sticking roller 7. The structure which becomes is adopted.

  According to a second aspect of the present invention, in the first aspect of the present invention, the cutting portion 4 is fixed to a swing frame 18 that is swingable along the delivery path R, and the fixed blade. And a movable blade 20 that is movably supported by the swing frame 18, and a solenoid 26 for moving the movable blade 20 is provided on the swing frame 18. The movable blade 20 is moved by the solenoid 26 based on this detection signal, and the water tape t is cut with the fixed blade 19.

  According to a third aspect of the present invention, in the invention of the second aspect, the tape pressing plate 17b that is arranged in parallel with the movable blade 20 so as to be movable within a certain range and is urged toward the fixed blade 19 by a spring 17a. When the movable blade 20 is moved to cut the water glue tape t with the fixed blade 19, the water glue tape t is moved with the tape holding plate 17 b by the spring 17 a in conjunction with the movement of the movable blade 20. The structure which presses against the fixed blade 19 is employ | adopted.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, as shown in FIG. 3, the interlocking mechanism 9 is connected to the feed roller 3 and a driven pulley 36 (FIG. 4). And a support pulley 37 that is rotatably arranged at a predetermined interval along the conveying direction A from the driven pulley 36, and a timing belt 38 wound between the pulleys 36, 37. A slider 40 (FIG. 10) is provided that supports the moving body 8 by being connected to the moving body 8, and a starting position adjusting mechanism 41 that adjusts the starting position of the slider 40 is provided.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the movable body 8 is disposed at the tip of a rotating arm 43 that is pivotally supported by the slider 40 so as to be vertically movable and biased upward. A guide roller 45 comprising a roller 8 and disposed on the rotating arm 43 and abutting against the lower surface of the transport table 1 is provided, facing the guide roller 45 and downstream of the lower surface 1b of the transport table 1 in the transport direction A. A cam 46 is provided, and the moving roller 8 is moved forward c along the conveying direction A by the front end face Ka of the cardboard box K, and the leading end of the wet tape t is moved to the front end face Ka of the cardboard box K by the sticking roller 7. After the application, a configuration is adopted in which the guide roller 45 is engaged with the cam 46 so that the moving roller 8 is lowered from the placement surface 1a.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the one-way clutch 49 that transmits only the forward rotation a of the driven pulley 36 to the feed roller 3 includes the driven pulley 36 and the feed roller 3. And a tension spring 51 for pulling the driven pulley 36 in the reverse b direction via the slider 40 and the timing belt 38. When the moving roller 8 is lowered from the mounting surface 1a, a one-way clutch A configuration is adopted in which the driven pulley 36 is idled by 49 and the slider 40 is returned to the starting position by the tension spring 51.

  The invention according to claim 7 includes a transport table 1 and a support frame 1B that is attached to the machine frame 1A on the transport table 1 so as to be height-adjustable and disposed above the transport table 1, A sealing passage A for passing the cardboard box K is formed between the support frame 1B and the transport table 1, and a sealing mechanism B is provided in the central groove portion 2 of the transport table 1 and in the support frame 1B, respectively. , C are provided, and the sealing mechanisms B, C are respectively provided with a feed roller 3 for feeding out the water glue tape t, a cutting part 4, a water application part 5, a sticking roller 7, and a sealing passage A. A detector 10 is provided that includes a movable body 8 that protrudes in and out and can be moved forward and backward in the passage direction Aa, and detects the rear end face Kc of the cardboard box K that is conveyed in the sealing passage A. By pushing the cardboard box K into the sealing passage A and passing it, Either or both of the moving bodies 8 of the sealing mechanisms B and C are brought into contact with the front end face Ka of the box K, and the contacted moving body 8 is moved forward along the passage direction Aa. Then, the feed roller 3 is rotated forward e so that the water glue tape t is applied with water in the water applicator 5 and then sent to the sticking roller 7, and the tip of the water glue tape t is fed to the front end of the cardboard box K by the sticking roller 7. Based on the detection signal of the detector 10 that is attached to the surface Ka and detects the rear end surface Kc of the cardboard box K, the water tape t is cut by the cutting unit 4, and the water tape t cut to the predetermined length is removed. A structure in which the application roller 7 is applied from the front end face Ka of the cardboard box K to the rear end face Kc of the cardboard box K through the abutting edges Kb of the outer flaps K1, K2 of the cardboard box K. Adopted.

  According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the gate-type machine casing 1A on the transfer table 1 is attached to the top of the transfer table 1 so that the height can be adjusted in the vertical directions a and b. The support frame 1B to be arranged adopts a configuration in which the support frame 1B is further arranged to be horizontally movable in the forward and backward advance directions c and d on the portal machine frame 1A.

  According to a ninth aspect of the invention, in the invention of the seventh or eighth aspect, the rotating arm 43 attached to the slider 40 is capable of moving forward and backward c and d along the passing direction Aa of the cardboard box K. A pressing spring 47 is provided for urging the moving roller 8 toward the sealing passage A via the rotating arm 43, and is arranged on the rotating arm 43. A roller 45 is provided, a cam 46 is provided on the downstream side in the passing direction Aa so as to face the guide roller 45, and the slider 40 and the feed roller 3 are interlocked and connected by a pulley mechanism 36 with a one-way clutch 35. A tension spring 49 for pulling the slider 40 in the backward d direction is provided, and the guide roller 45 is engaged with the cam 46 so that the moving roller 8 is immersed against the pressing spring 47 and sealed. Let retracted out passage A, it is to adopt made so as to return the slider 40 to its original position constituted by the tension spring 49 by idling pulley mechanism 36 by the one-way clutch 35.

  According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the holding means 56 that holds the moving roller 8 in a state of being retracted out of the sealing passage A by immersing the moving roller 8 against the pressing spring 47. The structure provided is adopted.

  According to an eleventh aspect of the present invention, in the invention according to any one of the seventh to tenth aspects, the cutting portion 4 of the lower sealing mechanism B can swing along the passing direction Aa of the cardboard box K. A fixed blade 19 fixed to the moving frame 18, and a movable blade 20 that is movably supported by the swinging frame 18 so as to face the fixed blade 19, and a solenoid 26 for moving the movable blade 20 is provided. The detector includes a tape pressing plate 17 which is provided on the swing frame 18 and is arranged in parallel with the movable blade 20 so as to be movable within a certain range and is urged toward the fixed blade 19 by a pressing spring 17b. 10, the movable blade 20 is moved by the solenoid 26 based on the detection signal 10, and the water glue tape t is cut by the fixed blade 19. At the time of cutting, the tape is pressed by the pressing spring 17 b in conjunction with the movement of the movable blade 20. Secure the glue tape t with the holding plate 17 It is to adopt and becomes a configuration as pressed against the cutting edge 19.

  According to an eleventh aspect of the present invention, in the invention according to any of the seventh to tenth aspects, the cutting portion 4 of the upper sealing mechanism C can swing along the passing direction Aa of the cardboard box K. A fixed blade 19 fixed to the frame 18 and a movable blade 20 movably supported by the swing frame 18 so as to face the fixed blade 19, and a solenoid 26 for moving the movable blade 20 is rocked. A tape pressing plate 17 provided on the moving frame 18 and arranged in parallel with the movable blade 20 so as to be movable within a certain range and urged by a pressing spring 17b is provided. A fixed guide plate 52 for guiding t is provided, and the movable blade 20 is moved by the solenoid 26 based on the detection signal of the detector 10 to cut the water glue tape t with the fixed blade 19, and the cutting is performed. When the movable blade 20 is movable By a spring 17b pressing conjunction is to employ a structure made so as to press the water glue tape t by a tape holding plate 17 to the fixed guide plate 52.

  According to the first aspect of the present invention, the worker grips the cardboard box K, places it on the upstream side of the placement surface 1a, and pushes it out. Since a driving source such as a motor is not required to push out the cardboard box K, the structure is simple and the manufacturing cost is low.

  Further, since the sealing process is performed with the water glue tape t which is cheaper than the adhesive tape, the running cost can be reduced.

  Further, since the water application treatment is performed immediately before the sealing with the water glue tape t, the adhesive strength of the water glue tape t can be surely applied.

  According to the invention described in claim 2, when the water scrap tape t is cut by the fixed blade 19 and the movable blade 20 provided on the swing frame 18, the swing frame 18 feeds the water tape t. Since the fixed blade 19 and the movable blade 20 are moved in synchronization with the feed speed of the water glue tape t, the water glue tape t is fed by the fixed blade 19 and the movable blade 20. Cutting can be performed accurately along a direction orthogonal to the direction.

  According to the third aspect of the invention, when the water glue tape t is cut, the water glue tape t is pressed against the fixed blade 19 by the tape pressing plate 17b, so that the water glue tape t is more accurately cut. be able to.

  According to the fourth aspect of the present invention, by adjusting the starting position of the slider 40 by the starting position adjusting mechanism 41, it is possible to freely adjust the feeding length of the drain tape t by the feeding roller 3. it can.

  According to the fifth aspect of the present invention, after the tip of the water tape t is stuck to the front end face Ka of the cardboard box K by the sticking roller 7, the guide roller 45 is engaged with the cam 46 to move the moving roller 8. Since it is lower than the mounting surface 1a, the moving roller 8 can be returned to the original position and easily reset.

  According to the sixth aspect of the present invention, when the moving roller 8 is lowered from the mounting surface 1a, the driven pulley 36 is idled by the one-way clutch 49 and the slider 40 is returned to the starting position by the tension spring 51. The roller 8 can be automatically returned to the original position.

  According to the seventh aspect of the present invention, when the worker holds the cardboard box K and pushes it into the sealing passage A, the water glue tape t is attached to the cardboard box K in conjunction therewith. Since the top and bottom surfaces and front and rear end surfaces of the cardboard box K can be attached at the same time, and no drive source such as a motor is required to push out the cardboard box K, the structure is simple and the manufacturing cost is low.

  Further, since the sealing process is performed with the water glue tape t which is cheaper than the adhesive tape, the running cost can be reduced.

  Further, since the water application treatment is performed immediately before the sealing with the water glue tape t, the adhesive strength of the water glue tape t can be surely applied.

  According to the eighth aspect, the cutting timing can be adjusted by the detector 10 by horizontally moving the support frame 1B in the forward and backward c and d directions. For example, the support frame 1B is horizontally moved in the forward c direction. By doing so, the cutting timing by the detector 10 is advanced, the height of the water tape t attached to the rear end face Kc of the cardboard box K is reduced, and the support frame 1B is horizontally moved in the reverse d direction, contrary to the above. By moving it, the cutting timing by the detector 10 can be delayed, and the sticking height of the glue tape t to the rear end face Kc of the cardboard box K can be increased.

  According to the ninth aspect of the present invention, the sticking roller 7 sticks the tip of the water tape t to the front end surface Ka of the cardboard box K, and then the moving roller 8 is immersed and retracted out of the sealing passageway A. Since the pulley mechanism 36 is idled by the one-way clutch 35 and the slider 40 is returned to the original position by the tension spring 49, it can be easily reset.

  According to the invention of claim 10, the upper and lower sealing mechanisms B and C are operated to attach the two water glue tapes t to the upper and lower surfaces of the cardboard box K. By simply retracting the moving roller 8 of one of the upper and lower sealing mechanisms B and C by the holding means 56 and retracting it outside the sealing passage A, the operation of the one sealing mechanism B (or C) is stopped. One water glue tape t can be selectively attached to the lower surface or the upper surface of the cardboard box K, and the usability is good.

  According to the eleventh aspect of the present invention, the rocking frame 18 swings when the glue tape t is cut by the fixed blade 19 and the movable blade 20 provided on the rocking frame 18 of the lower sealing mechanism B. Since the fixed blade 19 and the movable blade 20 are moved in synchronization with the feed speed of the water glue tape t, the fixed tape 19 and the movable blade 20 cause the water glue tape t to be orthogonal to the feed direction. It is possible to accurately cut along the direction. In particular, since the water tape t is pressed against the fixed blade 19 by the tape pressing plate 17 at the time of cutting, the water tape t can be cut more accurately. it can.

  According to the twelfth aspect of the present invention, when the fixed tape 19 provided on the swing frame 18 of the upper sealing mechanism C and the movable blade 20 are used to cut the drain tape t, the swing frame 18 is swung. Therefore, similarly to the invention described in claim 4, it is possible to accurately cut the water glue tape t along the direction perpendicular to the direction in which the water glue tape t is drawn. Since the pressing plate 17 is pressed against the fixed guide plate 52, the glue tape t can be cut more accurately.

It is a perspective view of the cardboard box sealing device which is one embodiment of the present invention. It is the same front view. FIG. It is the same side view. It is a longitudinal cross-sectional view of the principal part. It is a perspective view of the same cutting part. (A) And (b) is a longitudinal cross-sectional view which shows the cutting process by the cut part. It is a perspective view of the tape guide. It is a perspective view of the sticking roller. It is a perspective view of the vicinity of the interlocking mechanism. (A)-(c) is a schematic explanatory drawing which shows the first half of a sealing process. (A)-(c) is a schematic explanatory drawing which shows the second half of the sealing process. It is a perspective view of the sealed cardboard box. It is a perspective view of the cardboard box sealing device which is other embodiments of the present invention. It is the same front view. FIG. It is the same side view. It is a longitudinal cross-sectional view of the lower side sealing mechanism. It is a perspective view of the cutting part of the lower side sealing mechanism. (A) And (b) is a longitudinal cross-sectional view which shows the cutting process by the cut part. It is a perspective view of the tape guide of the lower side sealing mechanism. It is a perspective view of the sticking roller of the lower side sealing mechanism. It is a perspective view of the pulley mechanism vicinity of the lower side sealing mechanism. It is a longitudinal cross-sectional view of the upper side sealing mechanism. It is a perspective view of the cutting part of the same upper side sealing mechanism. (A) And (b) is a longitudinal cross-sectional view which shows the cutting process by the cut part. (A)-(c) is a schematic explanatory drawing which shows the first half of a sealing process. (A)-(c) is a schematic explanatory drawing which shows the second half of the sealing process. It is a principal part expanded back view which shows the modification of the same upper side sealing mechanism. It is a principal part expanded back view which shows the modification of the same lower side sealing mechanism. It is a perspective view of the sealed cardboard box.

  1 to 12 show a cardboard box sealing device according to an embodiment of the present invention, which is provided with a transport table 1 on which a cardboard box K is placed and transported in a predetermined transport direction A. A groove portion 2 is formed in the center of the mounting surface 1a on which the cardboard box K of the transfer table 1 is placed along the transfer direction A. In the groove portion 2, as shown in FIG. A delivery path R is formed, and a delivery roller 3, a cutting part 4, a water application part 5, a tape guide 6 and a sticking roller 7 are provided along the delivery path R, and a placement surface 1a. A moving roller (moving body) 8 that protrudes further upward and can be reciprocated along the conveying direction A is provided, and an interlocking mechanism 9 that interlocks and connects the moving roller 8 and the feeding roller 3 is provided, and a mounting surface A detector 10 is provided for detecting the rear end face Kc (FIG. 1) of the cardboard box K conveyed on 1a. It has been.

  As shown in FIGS. 1 to 4, the transport table 1 is formed by an upper horizontal plate portion of a steel frame main frame 12 having a substantially U-shape in a pair of left and right sides facing each other with the groove portion 2 interposed therebetween. The vertical plate portions 12a of the main frame 12 are integrally connected by a steel plate connecting frame 12b. Moreover, the upper surface of the conveyance stand 1 is set as the mounting surface 1a. In FIG. 1, reference numeral 13 denotes a pair of left and right guide frames arranged on the placement surface 1a, which guide the cardboard box K along the transport direction A.

  As shown in FIG.2 and FIG.3, the winding roll T which consists of a water glue tape t is rotatably attached to one vertical board part 12a.

  As shown in FIGS. 4 and 5, the feed roller 3 is pivotally supported on both vertical plate portions 12a via a support shaft 3a so as to be capable of forward and reverse rotation a and b. Reference numeral 14 denotes a pressing roller, which engages a central portion of a leaf spring 16 having both ends engaged with a support rod 15 protruding from one vertical plate portion 12a with a support shaft 14a of the pressing roller 14. Thus, the pressing roller 14 is pressed against the feeding roller 3 through the water glue tape t with an appropriate pressure, and the water roller tape t is fed along the path R by causing the feeding roller 3 to rotate forward a. Send it out.

  As shown in FIGS. 5 and 6, the cutting section 4 includes a fixed blade 19 fixed to a swing frame 18 that can swing along the delivery path R, and a swing frame 18 that faces the fixed blade 19. And a movable blade 20 supported so as to be movable.

  The swing frame 18 is supported by both vertical plate portions 12a via a support shaft 21 (shown below in FIGS. 5 and 6) so as to be swingable, and the vertical frame 18a. A horizontal frame 18b extending from the upper end along the delivery path R to the winding roll T side. The horizontal frame 18b is provided with a through hole 18c for arranging the delivery roller 3 therethrough. A fixed blade 19 is fixed to the upper end surface flush with the upper surface of the horizontal frame 18b.

  The movable blade 20 is formed in a substantially square shape at the upper edge of the through hole 22a provided in the vicinity of the upper portion of the movable plate 22 arranged along the side surface of the vertical frame 18a, and the movable plate 22 is interposed between the vertical frame 18a. A guide plate 23 having a tape guide portion 23a at its upper end is disposed between the guide plate 23 and the vertical frame 18a by a pair of left and right bolts and nuts 24. By loosely fitting the long hole 22b, the movable plate 22 is formed so as to be movable within a certain range along the vertical frame 18a, and a joint 22c bent from the lower end of the movable plate 22 is a through hole of the vertical frame 18a. 25 is connected to a solenoid rod 26a of a solenoid 26 fixed to the lower portion of the vertical frame 18a, and a spring 27 is provided to bias the solenoid rod 26a upward. Being .

  As shown in FIGS. 6 and 7, a substantially L-shaped tape pressing plate 17 b is disposed above the fixed blade 19, and passes through a vertical portion of the tape pressing plate 17 b to form a pair of upper portions of the movable plate 22. Bolts and nuts 56 that pass through the holes 55 are arranged so that the tape pressing plate 17b can be moved within a certain range on the movable blade 20, and the upper end piece 22d bent from the upper end of the movable plate 22 and the horizontal portion of the tape pressing plate 17b A spring 17a for biasing the tape pressing plate 17b toward the fixed blade 19 is interposed therebetween.

  In the above configuration, the solenoid 26 (FIGS. 5 and 6) is driven from the state shown in FIG. 7A based on the detection signal of the detector 10 (FIGS. 1 and 2), and the spring 27 (FIG. 5) is driven. When the solenoid rod 26a is pulled down, the movable plate 22 is pushed down as shown in FIG. 7 (b), and in conjunction with this, the tape pressing plate 17b is pressed against the water tape t by the spring 17a. In a state where the water tape t is sandwiched between the plate 17 b and the fixed blade 19, the water tape t is cut by the movable blade 20 and the fixed blade 19 that are movable.

  According to the above configuration, when the water scraping tape t is cut by the fixed blade 19 and the movable blade 20 provided on the swing frame 18, the swing frame 18 is swung, so that FIG. As indicated by the phantom line, the fixed blade 19 and the movable blade 20 are moved in synchronization with the feeding speed of the water glue tape t, so that the water glue tape t is sent out by the fixed blade 19 and the movable blade 20. It can cut | disconnect correctly along the orthogonal direction.

  Further, since the water tape t is pressed against the fixed blade 19 by the tape pressing plate 17b when the water tape t is cut, the water tape t can be cut more accurately.

  As shown in FIGS. 2 and 5, the water application part 5 has an application brush 5a made of non-woven fabric, and a water tank 5b into which the lower part of the application brush 5a is inserted penetrates the other vertical plate part 12a. The pressing lever 30 is detachably disposed in the groove portion 2 from the insertion port 29 and is opposed to the coating brush 5a so as to be rotatable about a support shaft 30a fixed to the vertical plate portion 12a. By applying the weight of the lever 30, the glue surface of the water tape t is pressed against the application brush 5a to perform the water application process.

  As shown in FIGS. 5 and 8, the tape guide 6 is arranged in parallel with the reverse roller 6 a supported by the outer frame 31 and at a predetermined interval in the transverse direction of the delivery path R, and at a predetermined interval with the reverse roller. A plurality of reversing plates 6b facing each other, and a guide plate 6c facing each other at a predetermined interval above each reversing plate 6b. The sheet is bent into a substantially U shape and is sent upward along the guide plate 6c.

  As shown in FIGS. 5 and 9, the sticking roller 7 is made of an elastic body such as sponge rubber, and a pair of rotations arranged on both vertical plate portions 12a via a support shaft 32 so as to be rotatable and to be able to approach and separate. A pair of springs 34 respectively disposed at the tip of the moving frame 33 and wound around the support shaft 32 are urged in the direction in which both the sticking rollers 7 approach each other and simultaneously urged upward. In the standby state, the two adhering rollers 7 are brought close to or in contact with each other, the upper adhering roller 7 is positioned above the placement surface 1a, and the upper portion of the lower adhering roller 7 is located above the placing surface 1a. It protrudes slightly upward, and supports the water tape t fed from the tape guide 6.

  As shown in FIGS. 3 and 10, the interlocking mechanism 9 includes a driven pulley 36 (FIG. 4) connected to the feed roller and one vertical plate spaced from the driven pulley 36 along the conveying direction A by a predetermined interval. A guide pulley having a support pulley 37 rotatably disposed on the portion 12a and a timing belt 38 wound between the pulleys 36 and 37 and fixed to the back surface of one vertical plate portion 12a along the conveying direction A. A slider 40 is engaged with the rail 39 so as to be able to move forward and backward, and a timing belt 38 is fixed to a lower end horizontal portion 40a of the slider 40, and a starting position adjusting mechanism 41 for adjusting the starting position of the slider 40 is provided. ing.

  As shown in FIG. 3, the starting position adjusting mechanism 41 includes a block 41a fixed to the back surface of one vertical plate portion 12a, and an adjusting bolt that is nut-attached to the block 41a and contacts the rear end plate 40b of the slider 40. 41b, and by adjusting the position of the slider 40 along the forward and backward movements c and d by moving the adjusting bolt 41b back and forth, the feeding length of the drain tape t by the feeding roller 3 is freely adjustable. Can be adjusted.

  As shown in FIGS. 3 and 10, the lower end portion of the rotating arm 43 is pivotally supported by the upper bifurcated portion 40 c of the slider 40 via the support shaft 44, and is attached to the tip end portion of the rotating arm 43. The moving roller 8 is rotatably arranged, and a guide roller 45 is provided on the side surface near the tip of the rotating arm 43 so as to be rotatable and comes into contact with the lower surface 1 b of the transport table 1. Oppositely, a substantially triangular cam 46 is provided on the downstream side in the transport direction A of the lower surface 1 b of the transport table 1, and a push-up spring 47 interposed between the rotating arm 43 and the rear end plate 40 b of the slider 40. By bringing the guide roller 45 into contact with the lower surface 1b, the moving roller 8 is protruded upward from the mounting surface 1a through the long hole 48 provided in the transport table 1.

  As shown in FIG. 3, a one-way clutch 49 for transmitting only the forward rotation a of the driven pulley 36 and transmitting it to the roller 3 is incorporated between the driven pulley 36 and the supply roller 3, and one vertical plate portion 12a. A tension spring 51 is provided between the support rod 50 projecting from the slider and the slider 40 and pulls the driven pulley 36 in the reverse b direction via the slider 40 and the timing belt 38.

  In the above configuration, as shown in FIG. 1, the cardboard box K is placed on the upstream side of the placement surface 1 a, and the operator pushes the cardboard box K in the transport direction A by hand, and the front end of the cardboard box K When the moving roller 8 is moved forward c along the conveying direction A by the surface Ka, the slider 40 is also moved forward c, and the feed roller 3 is rotated forward a through the timing belt 38, the driven pulley 36 and the one-way clutch 49. Then, the glue tape t is sent out and sent out along the path R to the sticking roller 7, and the tip of the glue tape t is stuck on the front end face Ka of the cardboard box K by the sticking roller 7. To move the moving roller 8 below the placement surface 1a (see the phantom line in FIG. 3).

  When the moving roller 8 is lowered from the placement surface 1a, the pushing of the moving roller 8 by the cardboard box K is released, so that the moving roller 8 and the slider 40 are moved backward by the tension spring 51 and returned to the original position ( In conjunction with this, the driven pulley 36 is reversely rotated b via the timing belt 38, but the reverse rotation b is not transmitted to the sending roller 3 by the one-way clutch 49, but the sending roller 3 Is idled following the direction in which the water tape t attached to the cardboard box K is pulled out, so that the water tape t is not fed in the reverse direction.

  According to the above configuration, after the tip of the water tape t is stuck to the front end face Ka of the cardboard box K by the sticking roller 7, the guide roller 45 is engaged with the cam 46 and the moving roller 8 is moved from the placement face 1a. Therefore, the moving roller 8 can be returned to the original position and easily reset.

  When the moving roller 8 is lowered from the mounting surface 1a, the driven pulley 36 is idled by the one-way clutch 49 and the slider 40 is returned to the starting position by the tension spring 51. Therefore, the moving roller 8 is automatically moved to the original position. You can go back up.

  Here, both the pulleys 36 and 37 and the delivery roller 3 are set to have the same diameter, whereby the moving speed of the moving roller 8 in the transport direction A and the delivery speed of the delivery roller 3 are made to coincide. Therefore, the sticking to the front end face Ka of the cardboard box K can be started smoothly.

  As shown in FIGS. 1 and 2, the detector 10 includes a pair of limit switches 10A and 10B arranged at a predetermined interval along the transport direction A, and the detection roller 10a of each limit switch 10A and 10B. , 10b are projected upward from the mounting surface 1a through the through hole 53 (FIG. 1) of the carriage 1, so that the limit switches 10A, 10B are turned off, and the detection roller rollers 10a, 10b are turned off. Is lowered from the mounting surface 1a, so that the limit switches 10A and 10B are turned on.

  In the above configuration, the cardboard box K pushed in the transport direction A passes over the detection roller roller 10a of the upstream limit switch 10A, and the upstream limit switch 10A is turned off. The end face Kc is detected (see FIG. 12A), and the solenoid 26 (FIGS. 5 and 6) is driven based on the OFF signal of the upstream limit switch 10A and the ON signal of the downstream limit switch 10B, and the spring 27 The movable blade 20 is pushed down against this, and the glue tape t is cut. Subsequently, the cardboard box K passes over the detection roller roller 10b of the downstream limit switch 10B [see FIG. 12 (b)], and the downstream limit switch 10B is turned off, based on the off signal. The drive of the solenoid 26 is stopped, and the movable blade 20 is pushed up by the spring 27 to return to the original standby position.

  The sealing procedure will be described. As shown in FIG. 11A, the cardboard box K is placed on the upstream side of the placement surface 1a, and the operator pushes the cardboard box K in the transport direction A by hand. As a result, the moving roller 8 is pushed by the front end surface Ka of the cardboard box K, and the pushing force advances the slider 40 against the tension spring 51, as shown in FIG. 36 and the one-way clutch 49, as shown in FIG. 5, the feed roller 3 is rotated forward a, the water tape t is sent out along the path R, and the glue surface of the water tape t is applied. Then, water is applied by the water application unit 5 (see FIG. 5), and adhesive force is applied to the glue surface.

  As shown in FIG. 11 (b), the water tape t to which water has been applied is bent into a substantially U shape by the tape guide 6 (see also FIG. 5) and fed to the application roller 7. Both limit switches 10A and 10B are turned on when the detection roller rollers 10a and 10b are pushed down by the cardboard box K.

  As shown in FIG. 11 (c), when the front end surface Ka of the cardboard box K pushed out in the transport direction A is pressed against both the sticking rollers 7 via the glue tape t, the upper sticking roller 7 is moved to the spring 34. Is pushed up along the front end surface Ka of the cardboard box K against the urging force of the cardboard and presses the front end surface Ka (see also FIG. 5), and the starting end portion of the glue tape t is applied to the front end surface Ka of the cardboard box K. The lower application roller 7 is pressed against the lower surface of the cardboard box K by the urging force of the spring 34, and the glue tape t is applied along the abutting edge Kb.

  As shown in FIG. 12 (a), the rear end face Kc of the cardboard box K pushed in the transport direction A passes over the detection roller roller 10a of the upstream limit switch 10A, and the upstream limit switch 10A is in the OFF state. Then, the downstream limit switch 10B is maintained in the ON state, and the solenoid 26 (FIGS. 5 and 6) is driven based on both the OFF and ON signals, and the movable blade 20 is pushed down to cut the water glue tape t. [Refer to FIG. 7B].

  After the leading end of the water glue tape t is stuck to the front end surface Ka of the cardboard box K by the sticking roller 7, the upper sticking roller 7 is subjected to the urging force of the spring 34 (FIG. 5) as shown in FIG. On the other hand, it is applied to the bottom surface of the cardboard box K in the same manner as the lower sticking roller 7, and immediately after that, the guide roller 45 is engaged with the cam 46, and the moving roller 8 is lowered from the mounting surface 1a. The driven pulley 36 is idled by the direction clutch 49, and the moving roller 8 and the slider 40 are moved backward by the tension spring 51 and returned to their original positions (behind the rear end face Kc of the cardboard box K as shown in FIG. 12A). It is.

  As shown in FIG. 12B, the rear end face Kc of the cardboard box K pushed out in the transport direction A passes over the detection roller roller 10b of the downstream limit switch 10B, and the downstream limit switch 10B is in the OFF state. Then, the drive of the solenoid 26 is stopped based on the off signal, and the movable blade 20 is returned to the original standby position.

  As shown in FIG. 12 (c), when the rear end face Kc of the cardboard box K pushed out in the conveying direction A passes over the lower sticking roller 7, the lower sticking roller 7 is moved to the spring 34 (FIG. 5). The urging force pushes up along the rear end face Kc of the cardboard box K and sticks the terminal edge of the water glue tape t to the rear end face Kc of the cardboard box K.

  According to the above configuration, the operator grips the cardboard box K, places it on the upstream side of the placement surface 1a, and pushes it out, so that the glue tape t is attached to the cardboard box K in conjunction with it. In addition, since a driving source such as a motor is not required to push out the cardboard box K, the structure is simple and the manufacturing cost is low.

  Further, since the sealing process is performed with the water glue tape t which is cheaper than the adhesive tape, the running cost can be reduced.

  Furthermore, since the water application part 5 performs the water application process immediately before the sealing process with the water glue tape t, it can be reliably applied in a state where the adhesive force of the water application part 5 is sufficiently exhibited.

  In the above embodiment, the moving roller 8 is provided at the tip of the rotating arm 43, but the moving roller 8 is omitted and the tip of the rotating arm 43 is engaged with the front end surface Ka of the cardboard box K. You may do it.

  14 to 28 show a cardboard box sealing device according to another embodiment of the present invention. The cardboard box sealing device is arranged in a vertical direction a and b on a transport table 1 and a portal machine frame 1A on the transport table 1. A sealing passageway A that has a support frame 1B that is attached so as to be height-adjustable and is disposed above the transport table 1 and that allows the cardboard box K to pass between the support frame 1B and the transport table 1. The sealing mechanisms B and C are respectively provided in the groove portion 2 and the support frame 1B formed along the passing direction Aa of the cardboard box K in the center of the transport table 1. The cardboard box K sealed in this embodiment shows a state in which the upper and lower surfaces of the cardboard box K are sealed with the water glue tape t, as shown in FIG. 31, and the two water glue tapes t Is attached from the front end face Ka of the cardboard box K to the rear end face Kc of the cardboard box K through the lower end side and the upper end Kb of the outer flaps K1, K2.

  As shown in FIGS. 14 to 23, the lower sealing mechanism B includes a feed roller 3 for feeding the water glue tape t, a cutting unit 4, a water application unit 5, a tape guide 6, and a sticking roller 7. A movable roller (moving body) 8 that protrudes into and out of the sealing passage A and can move forward and backward along the passage direction Aa, and an interlocking mechanism that interlocks and connects the movable roller 8 to the feed roller 3 9 and a detector 10 for detecting the rear end face Kc of the cardboard box K conveyed in the sealing passage A.

  As shown in FIG. 14 to FIG. 17, the transport table 1 is formed by a pair of left and right side-view substantially U-shaped steel plate main frames 12 facing each other with the groove portion 2 interposed therebetween. The plate portions 12a are integrally connected by a steel plate connecting frame 12b. Moreover, the upper surface of the conveyance stand 1 is set as the mounting surface 1a. In FIG. 14, reference numeral 13 denotes a pair of left and right guide frames arranged on the placement surface 1a, which guide the cardboard box K along the passing direction Aa.

  As shown in FIG.15 and FIG.16, the winding roll T which consists of a water glue tape t is rotatably attached to one vertical board part 12a.

  As shown in FIGS. 17 and 18, the feed roller 3 is pivotally supported on both vertical plate portions 12a via a support shaft 3a so as to be capable of forward and reverse rotation e and f. Reference numeral 14 denotes a pressing roller, which engages a central portion of a leaf spring 16 having both ends engaged with a support rod 15 protruding from one vertical plate portion 12a with a support shaft 14a of the pressing roller 14. Thus, the pressing roller 14 is pressed against the feeding roller 3 through the water tape t with an appropriate pressure, and the water tape t is sent out by rotating the feeding roller 3 forward.

  As shown in FIGS. 18 and 19, the cutting unit 4 includes a fixed blade 19 fixed to the swing frame 18, and a movable blade 20 movably supported on the swing frame 18 so as to face the fixed blade 19. have.

  The swing frame 18 has a vertical frame 18a supported by both vertical plate portions 12a via a support shaft 21 so as to be swingable, and a horizontal frame 18b extending from the upper end of the vertical frame 18a to the winding roll T side. The horizontal frame 18b is provided with a through hole 18c for disposing the feeding roller 3, and a fixed blade 19 is fixed to the upper end surface of the vertical frame 18a.

  The movable blade 20 is formed in a substantially square shape at the upper edge of a through-hole 22a penetrating in the vicinity of the upper portion of the movable plate 22 arranged along the vertical frame 18a, and the movable plate 22 is sandwiched between the vertical frame 18a. The guide plate 23 is arranged, the guide plate 23 and the vertical frame 18a are connected by a pair of left and right bolts and nuts 24, and the long holes 22b of the movable plate 22 are loosely fitted to the respective bolts 24. The movable plate 22 is formed so as to be movable within a certain range along the vertical frame 18a, and the horizontal flange portion 22c bent from the lower end of the movable plate 22 is inserted into the through hole 25 of the vertical frame 18a so as to be movable up and down within a certain range. The lateral flange 22c is connected to the solenoid rod 26a of the solenoid 26 fixed to the lower portion of the vertical frame 18a, and a spring 27 is provided to urge the solenoid rod 26a upward.

  As shown in FIGS. 19 and 20, a substantially L-shaped tape pressing plate 17 is disposed above the fixed blade 19, and passes through a vertical portion of the tape pressing plate 17 to form a pair of upper portions of the movable plate 22. Bolts and nuts 17a that pass through the holes 22d, the tape pressing plate 17 is juxtaposed to the movable plate 22 so as to be movable within a certain range, and the upper end piece 22e bent from the upper end of the movable plate 22 and the horizontal portion of the tape pressing plate 17 A pressing spring 17b that biases the tape pressing plate 17 toward the fixed blade 19 is interposed therebetween.

  In the above configuration, the solenoid 26 is driven based on the detection signal of the detector 10 from the state shown in FIG. 20A, and the solenoid rod 26a is pulled down against the spring 27, so as shown in FIG. 7B. As described above, the movable plate 22 is pushed down, and in conjunction with this, the pressing plate 17 is pressed against the water tape t by the pressing spring 17b, and the water pressing tape t is sandwiched between the tape pressing plate 17 and the fixed blade 19. Then, the movable blade 20 and the fixed blade 19 that move down the glue tape t are cut.

  According to the above-described configuration, when the glue tape t is cut by the fixed blade 19 and the movable blade 20 provided on the swing frame 18, the swing frame 18 is swung, so that FIG. As indicated by the phantom line, the fixed blade 19 and the movable blade 20 are moved in synchronization with the feeding speed of the water glue tape t, so that the water glue tape t is sent out by the fixed blade 19 and the movable blade 20. It can cut | disconnect correctly along the orthogonal direction.

  Further, since the water tape t is pressed against the fixed blade 19 by the tape pressing plate 17 when the water tape t is cut, the water tape t can be cut more accurately.

  As shown in FIGS. 15 and 18, the water application part 5 has an application brush 5a made of non-woven fabric, and a water tank 5b into which the lower part of the application brush 5a is inserted penetrates the other vertical plate part 12a. It is detachably disposed in the groove portion 2 from the insertion port 29, and a pressing lever 30 is rotatably disposed so as to face the coating brush 5b. The glue surface of the water tape t is applied by its own weight. It presses against the brush 5a and performs a water application process.

  As shown in FIGS. 18 and 21, the tape guide 6 and the reverse roller 6a supported by the outer frame 31 are arranged in parallel at a predetermined interval in the transverse direction with respect to the feeding direction of the wet tape t. The reversing roller 6a has a plurality of reversing plates 6b opposed to each other at a predetermined interval, and a guide plate 6c opposed to the reversing plate 6b at a predetermined interval. It passes between the roller 6a and the reverse plate 6b, is bent into a substantially U shape, and is sent out along the guide plate 6c.

  As shown in FIGS. 18 and 22, the sticking roller 7 is made of an elastic body such as sponge rubber, and a pair of rotations arranged on both vertical plate portions 12 a via a support shaft 32 so as to be rotatable and approachable to and away from each other. A pair of springs 34 respectively disposed at the tip of the moving frame 33 and wound around the support shaft 32 are urged in the direction in which both the sticking rollers 7 approach each other and simultaneously urged upward. In the waiting state, the two adhering rollers 7 are brought close to or in contact with each other, the upper adhering roller 7 is located above the placement surface 1a and protrudes into the sealing passage A, and the lower adhering roller 7 The upper part of the roller 7 protrudes slightly upward from the mounting surface 1a, and supports the glue tape t fed from the tape guide 6.

  As shown in FIGS. 16 and 23, the interlock mechanism 9 includes a driven belt 36a and a support pulley 36b connected to the feed roller 3 via a one-way clutch 35, and a timing belt wound between the pulleys 36a and 36b. The slider 40 is engaged with a guide rail 39 fixed to the back surface of one vertical plate portion 12a so as to be able to move forward and backward c and d, and a timing is set to the locking portion 40a of the slider 40. A starting position adjusting mechanism 41 that adjusts the starting position of the slider 40 is provided.

  As shown in FIG. 16, the starting position adjusting mechanism 41 has an adjusting bolt 41a that is nut-attached to a block fixed to the back surface of one vertical plate portion 12a and abuts against the slider 40. By retracting and adjusting the position of the slider 40 along the forward / backward c and d directions, the delivery length of the water tape t by the delivery roller 3 can be adjusted freely.

  As shown in FIGS. 16 and 23, a rotary arm 43 is pivotally supported on the slider 40 via a support shaft 44, and the moving roller 8 is rotatable at the tip of the rotary arm 43. A guide roller 45 is provided that is rotatably disposed on the side surface near the tip of the rotating arm 43 and abuts against the lower surface 1 b of the transport table 1. The lower surface of the transport table 1 faces the guide roller 45. A substantially triangular cam 46 is provided on the downstream side in the passing direction Aa of 1b, and the guide roller 45 is moved by contacting the lower surface 1b with a pressing spring 47 interposed between the rotating arm 43 and the slider 40. The roller 8 is positioned above the placement surface 1 a through the long hole 48 opened in the transport table 1 and protrudes into the sealing passage A. Further, as shown in FIG. 3, a tension spring 49 for pulling the slider 40 in the backward d direction is provided.

  In the above configuration, as shown in FIG. 16, the cardboard box K is placed on the placement surface 1a and pushed into the sealing passage A, and the moving roller 8 is moved forward by the front end face Ka of the cardboard box K. The slider 40 is also moved forward c, and the feed roller 3 is forwardly rotated e through the pulley mechanism 36 and the one-way clutch 35, and as shown in FIGS. 15 and 18, the glue tape t is sent to the sticking roller 7, After the leading end of the water glue tape t is stuck to the front end face Ka of the cardboard box K by the sticking roller 7, the guide roller 45 is engaged with the cam 46 and the moving roller 8 is immersed against the pressing spring 47. It is made to retract outside the sealing passage A (see the phantom line in FIG. 16).

  When the moving roller 8 is retracted out of the sealing passage A, the pushing of the moving roller 8 by the cardboard box K is released, so that the moving roller 8 and the slider 40 are moved backward by the tension spring 49 and returned to the original position. (Refer to the solid line in FIG. 16) The driven pulley 36a is reversely rotated f in conjunction therewith, but the reverse rotation f is not transmitted to the feed roller 3 by the one-way clutch 35, and the feed roller 3 is transferred to the cardboard box K. Following the direction of pulling out the adhered water tape t, the forward rotation e is performed, and the water tape t is not sent out in the reverse direction.

  According to the above configuration, the sticking roller 7 sticks the leading end of the water tape t to the front end face Ka of the cardboard box K, and then the moving roller 8 is immersed and retracted out of the sealing passage A, and the one-way clutch. Since the pulley mechanism 36 is idled by 35 and the slider 40 is returned to the original position by the tension spring 49, it can be easily reset.

  Here, both the pulleys 36a and 36b and the delivery roller 3 are set to have the same diameter, and thereby the moving speed of the moving roller 8 and the delivery speed of the delivery roller 3 are made to coincide with each other. The sticking to the front end face Ka of the box K can be started smoothly.

  As shown in FIGS. 14, 15 and 18, the detector 10 is composed of a pair of limit switches 10A and 10B arranged at a predetermined interval along the passage direction Aa. When the detection rollers 10a and 10b protrude into the sealing passage A, the limit switches 10A and 10B are turned off, and when the detection roller rollers 10a and 10b are pushed down, the limit switches 10A and 10B are pressed down. 10B is turned on.

  In the above configuration, the cardboard box K passing through the sealing passage A passes over the detection roller 10a of the upstream limit switch 10A, the detection roller 10a rises, and the upstream limit switch 10A is turned off. Thus, the rear end face Kc of the cardboard box K is detected (see FIG. 28A), and the solenoid 26 is driven based on the off signal of the upstream limit switch 10A and the on signal of the downstream limit switch 10B. Then, the movable blade 20 is pushed down against the spring 27, and the water glue tape t is cut. Subsequently, the cardboard box K passes over the detection roller roller 10b of the downstream limit switch 10B, the detection roller roller 10b rises, and the downstream limit switch 10B is turned off [FIG. )], The drive of the solenoid 26 is stopped based on the OFF signal, and the movable blade 20 is pushed up by the spring 27 to return to the original standby position.

  Since the structure of the upper sealing mechanism C is basically the same as the structure of the lower sealing mechanism B, the same reference numerals are given to the same portions, the description thereof is omitted, and only the differences are described below.

  As shown in FIGS. 24 to 26, the cutting unit 4 includes a fixed blade 19 fixed to the swing frame 18, and a movable blade 20 movably supported on the swing frame 18 so as to face the fixed blade 19. have.

  The swing frame 18 includes a vertical frame 18a that is swingably supported by the support frame 1B via a support shaft 21, and a horizontal frame 18d that extends from the lower end of the vertical frame 18a toward the winding roll T. A fixed blade 19 is fixed to the lower surface of the horizontal frame 18d.

  The movable blade 20 is formed in a substantially square shape at the lower edge of a through-hole 22a penetrating near the lower portion of the movable plate 22 disposed along the vertical frame 18a, and the movable plate 22 is sandwiched between the vertical frame 18a. The guide plate 23 is arranged, the guide plate 23 and the vertical frame 18a are connected by a pair of left and right bolts and nuts 24, and the long holes 22b of the movable plate 22 are loosely fitted to the respective bolts 24. The movable plate 22 is formed so as to be movable within a certain range along the vertical frame 18a, and a horizontal flange portion 22c bent from the upper end of the movable plate 22 is inserted into the through hole 25 of the vertical frame 18a so as to be movable up and down within a certain range. The lateral flange 22c is connected to the solenoid rod 26a of the solenoid 26 fixed to the upper portion of the vertical frame 18a, and a spring 27 is provided to urge the solenoid rod 26a downward.

  As shown in FIGS. 24 to 26, a substantially L-shaped tape support plate 51 disposed below the fixed blade 19 is attached to the swing frame 18, and the horizontal plate portion 51 a of the tape support plate 51 is fixed to the fixed blade 19. And the vertical plate portion 51b of the tape support plate 51 is disposed along the movable plate 22, and the movable plate 22 is placed on the vertical plate portion 51b. A substantially L-shaped tape pressing plate 17 is disposed therebetween, and the tape pressing plate 17 is attached to the movable plate 22 by bolts and nuts 17 a passing through the vertical portions of the tape pressing plate 17 and the long holes 22 d of the movable plate 22. A pressing spring 17b that is arranged side by side so as to be movable within a certain range and urges the tape pressing plate 17 upward is interposed between the lower end piece 22f bent from the lower end of the movable plate 22 and the horizontal portion of the tape pressing plate 17. And the A fixed guide plate 52 extending from a position facing the loop holding plate 17 at a predetermined interval to the water application unit 5 is provided, and the tape facing surface 52a of the fixed guide plate 52 is flush with the lower surface of the fixed blade 19. Is formed. In FIG. 24, 53 is an auxiliary guide plate arranged in parallel below the fixed guide plate 52 with a space slightly larger than the thickness of the water tape t, and in FIG. 25, 54 indicates the swing frame 18 at its original position. It is a return spring for making it return to.

  In the above configuration, the solenoid 26 is driven from the state shown in FIG. 26A based on the detection signal of the detector 10 and the solenoid rod 26a is pulled up against the spring 27, so as shown in FIG. As described above, the movable plate 22 is pulled up, and the tape pressing plate 17 is pressed against the water tape t by the pressing spring 17b in conjunction with the movable plate 22, and the water tape t is sandwiched between the tape pressing plate 17 and the fixed guide plate 52. In this state, the movable blade 20 and the fixed blade 19 that move up the glue tape t are cut.

  According to the above configuration, when the water scraping tape t is cut by the fixed blade 19 and the movable blade 20 provided on the swing frame 18, the swing frame 18 is swung, so that FIG. As indicated by the phantom line, the fixed blade 19 and the movable blade 20 are moved in synchronization with the feeding speed of the water glue tape t, so that the water glue tape t is sent out by the fixed blade 19 and the movable blade 20. It can cut | disconnect correctly along the orthogonal direction.

  Further, since the water tape t is pressed against the fixed guide plate 52 by the tape pressing plate 17 at the time of cutting, the water tape t can be cut more accurately.

  In FIG. 14, reference numeral 55 denotes a guide shoe fixed to the lower surface of the support frame 1B on the upstream side in the passage direction Aa, which is parallel to the placement surface 1a, and the height of the support frame 1B is set to the vertical direction a, By adjusting along b, the height of the sealing passage A (that is, the distance between the guide shoe 55 and the placement surface 1a) is adjusted to the height of the cardboard box K.

  The sealing procedure will be described. As shown in FIG. 27A, the cardboard box K shown in FIG. 31 is placed on the upstream side of the placement surface 1a and pushed out into the sealing passage A. As a result, the moving roller 8 of the upper and lower sealing mechanisms B and C is pushed by the front end face Ka of the cardboard box K, and the slider 40 is moved forward against the tension spring 49 by the pushing force. By causing the feed roller 3 to rotate forward e through the directional clutch 35, the water glue tape t is sent out, and water is applied to the glue surface of the water glue tape t by the water applicator 5 (see FIG. 18). Adhesive strength is applied to the glue surface.

  As shown in FIG. 27 (b), the water glue tape t to which water is applied is guided by the tape guide 6 and fed to the sticking roller 7. Both limit switches 10A and 10B are turned on when the detection roller rollers 10a and 10b are pushed down by the cardboard box K.

  As shown in FIG. 27 (c), when the front end surface Ka of the cardboard box K pushed out in the passing direction Aa is pressed against both the sticking rollers 7 via the water tape t, the front sticking roller 7 is pressed by the spring 34 to the corrugated cardboard. It moves along the front end surface Ka of the box K, sticks the starting end portion of the water glue tape t to the front end surface Ka of the cardboard box K, and the rear application roller 7 is pressed against the upper and lower surfaces of the cardboard box K by the spring 34. A glue tape t is stuck along the butt edge Kb.

  As shown in FIG. 28 (a), the rear end face Kc of the cardboard box K pushed in the passing direction Aa passes over the detection roller roller 10a of the upstream limit switch 10A, and the upstream limit switch 10A is turned off. The downstream limit switch 10B maintains the on state, and the solenoid 26 is driven based on both the off and on signals to move the movable blade 20 and cut the drain tape t [FIG. 20 (b), See FIG. 26 (b)].

  Subsequently, the guide roller 45 is engaged with the cam 46, the moving roller 8 is retracted and retracted outside the sealing passage A, the pulley mechanism 36 is idled by the one-way clutch 35, and the slider 40 is driven by the tension spring 49. Return to the original position.

  As shown in FIG. 28 (b), the rear end face Kc of the cardboard box K pushed in the passing direction Aa passes over the detection roller roller 10b of the downstream limit switch 10B, and the downstream limit switch 10B is turned off. Based on the off signal, the drive of the solenoid 26 is stopped.

  As shown in FIG. 28 (c), when the rear end face Kc of the cardboard box K pushed in the passing direction Aa passes over the rear sticking roller 7, the rear sticking roller 7 is moved by the spring 34 to the rear end face Kc of the cardboard box K. The terminal edge of the water glue tape t is affixed to the rear end face Kc of the cardboard box K.

  According to the above configuration, when an operator grips the cardboard box K and pushes it into the sealing passage A, the glue tape t is attached to the cardboard box K in conjunction with it. Since a driving source such as a motor is not required to push out K, the structure is simple and the manufacturing cost is low.

  Further, since the sealing process is performed with the water glue tape t which is cheaper than the adhesive tape, the running cost can be reduced.

  Further, since the water application treatment is performed immediately before the sealing with the water glue tape t, the adhesive strength of the water glue tape t can be surely applied.

  In the above configuration, the upper and lower sealing mechanisms B and C are operated and the two water glue tapes t are attached to the upper and lower surfaces of the cardboard box K. However, one water glue tape t is attached to the lower surface of the cardboard box K or When pasting only on the upper surface, it may be as follows.

  When a single glue tape t is applied only to the lower surface of the cardboard box K, as shown by a solid line in FIG. 29, the movable roller 8 is immersed by pushing up the rotating arm 43 of the upper sealing mechanism C. Then, the holding bolt (holding means) 56 is screwed into the screw hole of the slider 40 (or the support frame 1B) to prevent the rotating arm 43 from moving downward. The moving roller 8 is not lowered.

  When a single glue tape t is stuck only on the upper surface of the cardboard box K, the movable roller 8 is immersed by depressing the rotating arm 43 of the lower sealing mechanism B as shown by a solid line in FIG. Then, the holding bolt 56 is screwed into the screw hole of the slider 40 (or the support frame 1B), and the holding bolt 56 prevents the upward movement of the rotating arm 43, thereby moving the moving roller. 8 should not go up.

  According to the above configuration, one holding roller 56 is inserted into one of the upper and lower sealing mechanisms B and C against the pressing spring 47 and retracted out of the sealing passage A. The water glue tape t can be selectively attached to the lower surface or the upper surface of the cardboard box K, and the usability is good.

  In FIG. 29 and FIG. 30, the holding bolt 56 is used as the holding means. However, the holding bolt 56 is not limited to this, and it may be anything that prevents the rotation of the rotation arm 43 such as a hook.

  In the above embodiment, the moving roller 8 is provided at the tip of the rotating arm 43, but the moving roller 8 is omitted and the tip of the rotating arm 43 is engaged with the front end surface Ka of the cardboard box K. You may do it.

DESCRIPTION OF SYMBOLS 1 Transfer stand 1a Mounting surface 1b Lower surface of transfer stand 2 Groove part 3 Feeding roller 4 Cutting part 5 Water application part 6 Tape guide 7 Sticking roller 8 Moving roller (moving body)
DESCRIPTION OF SYMBOLS 9 Interlocking mechanism 10 Detector 18 Swing frame 19 Fixed blade 20 Movable blade 26 Solenoid 36 Driven pulley 37 Support pulley 38 Timing belt 40 Slider 41 Starting position adjustment mechanism 43 Rotating arm 45 Guide roller 46 Cam 49 One-way clutch 51 Tension spring K cardboard box Ka front end face of cardboard box Kb butt edge of cardboard box Kc rear end face of cardboard box K1, K2 outer flap t water glue tape A transport direction or sealing passage R delivery path B lower sealing mechanism C upper side Sealing mechanism

Claims (12)

  A cardboard box sealing device for sealing the butt edges of outer flaps of a cardboard box with water glue tape, provided with a transport table for placing the cardboard box and transporting it in a predetermined transport direction, A groove is formed in the center of the mounting surface on which the cardboard box of the transfer table is mounted along the transfer direction, and a feed roller for sending water glue tape out along the path and a cutting unit in the groove And a water application portion, a tape guide for bending the water glue tape into a substantially U shape and feeding it upward, and an affixing roller for supporting the water glue tape, and projecting upward from the mounting surface. A movable body that can reciprocate along the transport direction is provided, and an interlocking mechanism that interlocks and connects the mobile body and the delivery roller is provided to detect the rear end surface of the cardboard box that is transported on the mounting surface. A detector is provided. The cardboard box placed on the upstream side of the placement surface is pushed out along the transport direction, and the moving body that hits the front end surface of the cardboard box is advanced along the transport direction to send it out via the interlocking mechanism. Rotate the roller forward to feed the water glue tape, apply the water glue tape to the water application part, then feed it through the tape guide to the application roller, and the application roller will feed the tip of the water glue tape to the cardboard box. Based on the detection signal of the detector that is attached to the front end surface and detects the rear end surface of the cardboard box, the cutting tape is cut by the cutting unit, and the water tape that has been cut to a predetermined length is cut by the sticking roller to the cardboard box. A corrugated cardboard box sealing device that sticks from the front end surface of the cardboard box to the rear end surface of the corrugated cardboard box through the butt edge of the outer flaps of the corrugated cardboard box.   The cutting portion includes a fixed blade fixed to a swing frame that can swing along a delivery path, and a movable blade that is movably supported by the swing frame so as to face the fixed blade, A solenoid for moving the movable blade is provided in the swing frame, and the movable blade is moved by the solenoid based on the detection signal of the detector, and the water tape is cut with the fixed blade. Item 4. A cardboard box sealing device according to Item 1.   The movable blade has a tape pressing plate arranged in parallel so as to be movable within a certain range and urged toward the fixed blade by a spring, and the movable blade is moved to cut the water glue tape with the fixed blade. The cardboard box sealing device according to claim 2, wherein the glue tape is pressed against the fixed blade with a tape pressing plate by a spring in conjunction with the movement of the movable blade.   The interlocking mechanism includes a driven pulley connected to the feed roller, a support pulley that is rotatably arranged at a predetermined interval along the transport direction from the driven pulley, and a timing belt wound between the pulleys. A cardboard box according to any one of claims 1 to 3, further comprising a slider connected to the timing belt and supporting the moving body, and a starting position adjusting mechanism for adjusting a starting position of the slider. Sealing device.   A guide roller that includes a moving roller disposed at a tip of a rotating arm that is pivotally supported by the slider so as to move up and down and is urged upward. A cam is provided on the lower surface of the transport table in the transport direction so as to face the guide roller. 5. The cardboard box sealing device according to claim 4, wherein the guide roller is engaged with the cam and the moving roller is lowered from the mounting surface after the front end portion of the tape is attached to the front end surface of the cardboard box.   A one-way clutch for transmitting only the forward rotation of the driven pulley to the sending roller is incorporated between the driven pulley and the sending roller, and a tension spring for pulling the driven pulley in the reverse direction via the slider and the timing belt 6. The cardboard box sealing device according to claim 5, wherein when the moving roller is lowered from the mounting surface, the driven pulley is idled by a one-way clutch and the slider is returned to a starting position by a tension spring. .   A carrier frame, and a support frame that is attached to the machine frame on the carrier table so as to be height-adjustable and disposed above the carrier table, and passes the cardboard box between the support frame and the carrier table. Sealing passages are formed, sealing mechanisms are respectively provided in the central groove portion of the transport table and the support frame, and each sealing mechanism is a feed roller for feeding water glue tape; After a corrugated cardboard box provided with a cutting part, a water application part, a sticking roller, and a moving body that protrudes into and out of the sealing passage and can move forward and backward along the passage direction. A detector for detecting the end surface is provided, and by pushing the cardboard box into the sealing passage and passing it, both or one of the moving bodies of both sealing mechanisms is brought into contact with the front end surface of the cardboard box. The abutting moving body is advanced along the passing direction. In conjunction with this, the feed roller is rotated forward to apply the water glue tape to the application roller after the water application part is applied to the water application section, and the application roller attaches the tip of the water adhesive tape to the front end surface of the cardboard box. Then, based on the detection signal of the detector that detects the rear end surface of the cardboard box, the water glue tape is cut by the cutting part, and the water glue tape cut to the predetermined length is removed from the front end surface of the cardboard box by the sticking roller. A corrugated cardboard box sealing device configured to pass over the butt edge of the outer flaps of the corrugated cardboard box to the rear end surface of the corrugated cardboard box.   The support frame, which is attached to the portal machine frame on the transfer table so that the height can be adjusted in the vertical direction, is further movable horizontally in the forward / backward direction on the portal machine frame. The cardboard box sealing device according to claim 7, which is arranged.   The moving body is composed of a moving roller disposed at a tip end of a rotating arm attached to a slider capable of moving back and forth along the passing direction of the cardboard box, and the moving roller is inserted into the sealing passage through the rotating arm. A pressing spring is provided for biasing the rotating arm, a guide roller is provided on the rotating arm, a cam is provided on the downstream side in the passing direction so as to face the guide roller, and the slider and the feeding roller are integrated with each other. A tension spring that is linked and linked by a pulley mechanism with a directional clutch and pulls the slider in the reverse direction is provided. By engaging the guide roller with the cam, the moving roller is immersed against the pressing spring and out of the sealing passage. 9. The cardboard box according to claim 7 or 8, wherein the pulley mechanism is idled by a one-way clutch and the slider is returned to its original position by a tension spring. Le box sealing apparatus.   10. The cardboard box sealing device according to claim 9, further comprising holding means for holding the moving roller in a state of being retracted against the pressing spring and retracted out of the sealing passage.   The cutting portion of the lower sealing mechanism has a fixed blade fixed to a swing frame that can swing along the direction of passage of the cardboard box, and a movable blade that is supported by the swing frame so as to be opposed to the fixed blade. A tape having a blade, a solenoid for moving the movable blade is provided in the swing frame, and is arranged in parallel to the movable blade so as to be movable within a predetermined range, and is urged toward the fixed blade by a pressing spring. A holding plate is provided, and the movable blade is moved by the solenoid based on the detection signal of the detector to cut the water tape with the fixed blade, and at the time of the cutting, in conjunction with the movement of the movable blade The cardboard box sealing device according to any one of claims 7 to 10, wherein a water tape is pressed against the fixed blade with a tape pressing plate by a pressing spring.   A fixed blade in which the cutting portion of the upper sealing mechanism is fixed to a swing frame that can swing along the passing direction of the cardboard box, and a movable blade that is supported by the swing frame so as to be movable facing the fixed blade And a solenoid for moving the movable blade is provided in the swing frame, and a tape pressing plate urged by a pressing spring is provided in parallel with the movable blade so as to be movable within a certain range, A fixed guide plate for guiding the water tape is provided opposite the tape pressing plate, and the movable blade is moved by a solenoid based on the detection signal of the detector to cut the water tape with the fixed blade. The cardboard box sealing device according to any one of claims 7 to 10, wherein when the cutting is performed, the glue tape is pressed against the fixed guide plate by a tape pressing plate by a pressing spring in conjunction with the movement of the movable blade. .

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