JP3929848B2 - Packaging unit for packaging - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for bundling bag mouths of packaging bags containing articles to be packed while forming multiple rows of design pleats.
[0002]
[Problems to be solved by the invention]
The respective wrapping bags are suspended by the respective clamps attached to the periphery of the rotor at equal intervals, and the respective wrapping bags are transported along the circular track by the rotation of the rotor, and the respective wrapped bags are sequentially covered in the middle of the transport track. After the package is accommodated and the bag mouth of each wrapping bag is heat-sealed, in the end section, the already-sealed portion of the wrapping body released from the clamp is covered with a pair of pleat-forming sandwiching bodies, and the wrapping body is Japanese Patent Application Laid-Open No. 2002-12202 discloses an apparatus for carrying out the outside of the rotor and narrowing the upper region of the sachet body with a pair of squeezing devices in the carry-out track and simultaneously purging the narrowed portion with a binding tool. . In short, the opposed surfaces of the pair of pleat forming sandwiching bodies are chevron teeth, and as a result of sandwiching the bag mouth from both sides with these chevron teeth, it is possible to form parallel pleats in the bag mouth.
[0003]
However, because the plastic packaging bag has its own elasticity, when it is released from the pleat-forming sandwich, the problem is that the folds are loosened, and if the packaged item is lightweight, the weight of the packaging bag is low, so the weight is low. There is a problem that it is difficult to reach the folds and the bundling portion, and there is a drawback that the commercial property is not improved.
[0004]
The present invention is a bundling device that is used in combination with a rotary bagging machine to enable bundling without the above disadvantages, and the bundling device is a bag body in the rotary bagging machine. A pair of pleat-forming sandwiches for carrying out the package from the bagging machine in accordance with the unloading path branched from the release section and in accordance with the package release timing, and the pleat-forming sandwich provided with cooling means Since the bag mouth of the wrapping bag is heat-sealed and formed as a sealed wrapping body immediately before the wrapping body release section in the rotary bagging machine, the pleats that seal the already-sealed portion of the wrapping body The cooling means provided in the forming sandwiching body uses the thermoplastic properties of the plastic packaging bag to make the bag mouth folds stand out and improve the merchantability.
[0005]
Also, in the above-mentioned device, the binding work line at the end of the carry-out track that branches off from the bag body release section in the rotary bagging machine, the lower load value is applied to the package body that is supported and supported by the pleat forming sandwich body. Since the means for enlarging is provided, and the bag is pulled downward by increasing the load value to make the folds longer and stand out, and narrowed by a pair of squeezing devices, the merchantability can be further improved.
[0006]
Furthermore, a pair of chevron teeth that are divided into two parts are supported on opposing surfaces of a pair of relatively spaced apart jaw jaws that are constituent elements of the pleat-forming sandwich, and a pleat-forming sandwich is formed at least on one side The outer ends of the two-divided chevron teeth are pivotally supported on the biting jaws via pins, and the inner ends of the two-split chevron teeth are springed in the direction of the opposing chevron teeth. Is configured to be extruded. In short, when the clamping of the packaging body already sealed portion is started with the pleat forming clamping body, first, a pleat is formed at the inner end of each of the two split chevron teeth pushed out by the spring, that is, the middle portion of the packaging body, With both ends of the open, using the spring cushion, we will engage the chevron toward the both ends, so that the folds stand out, and immediately after that, support the intermediate part of the package already sealed part with an auxiliary clamp, In addition, the engagement of the pleat forming clamps is loosened from both ends in the state where the spring force is effective, and the bag mouth is narrowed with a pair of squeezing devices. Improve.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The rotary type bag filling and packaging machine shown in FIG. 1 for connecting to the binding device of the present application arranges eight sets of clampers 11 consisting of two sets on the periphery of the circular rotor 10, and each of these clampers 11 is arranged. In the structure in which the rotor 10 is moved intermittently by one pitch in the direction of the arrow 12, and the packaging bag 14 is fed to the clamps 11 by the vacuum cup 15 in the packaging section “13”. The wrapping bag moving along the circular path is filled with an object to be packaged through the hopper 16, and the bag mouth of the wrapping bag is heated and sealed at the installation position of the pair of seal bars 17, 18. Is a structure in which the completely sealed package 20 is released from the clamp. However, such a configuration is generally known and is not novel. However, the pair of pleat-forming clamps 21 installed in the release section “19” is used to cut the already-sealed portion of the package 20 just before release from the clamp. Then, the packaging body 20 is transported along the carry-out track 30 to the bundling work line 22 while forming a crease that folds on the upper edge of the packaging body 20.
[0008]
FIG. 2, which is an enlarged view of the release section “19”, fixes the pleat-forming sandwiching body 21 composed of a pair of chevron teeth 23 and 24 that mesh with each other to a slider 26 that supports two guide rods 25. On the other hand, the pin 29 of the slider 26 is engaged with the elongated hole portion of the swing lever 28 connected to the driving shaft 27, and the slider 26 reciprocates along the guide rods 25, 26 by the swing power of the lever 28. By the movement, the pleat forming sandwich 21 can be reciprocated between the clamp 11 and the binding work line 22.
[0009]
FIG. 3 shows the pleat-forming sandwich body more specifically. A piston lot 35 of a fluid cylinder 34 that fixes one end of a lever 33 pivotally supported by a pin 32 of a main body frame 31 to the frame 31 is shown. On the other hand, the other end of the lever 33 is connected to the one side chewing jaw material 36 equipped with one side chevron tooth material 23 and the frame 31 is equipped with the other side chevron tooth material 24. The jaw members 37 are fixed to each other, and both the jaw members 36 and 37 can be moved toward and away from each other with the pin 32 as a fulcrum by the pressure operation of the cylinder 34 against the pulling force of the coil spring 38. The chevron teeth 23 and 24 hold the already-sealed portion of the package 20 supported by the clamp 11 of the bagging and packaging machine from both sides, and then carry out the package 20 simultaneously with the release of the clamp 11.
[0010]
FIG. 4 shows a state in which the both jaw jaw materials 36 and 37 are relatively close to each other and the two left and right mountain-shaped tooth materials 23 and 24 divided into two at the intermediate portion are engaged with each other. In the drawing, in particular, the chevron tooth material 24 on one side is fixed to the engagement jaw material 37 on the one side, whereas the chevron tooth material 23 on the other side is swung freely around a pin 39. A spring 41 is interposed between the engagement jaw material 36 and the rocking plate 40 while being supported by the plate 40.
[0011]
As shown in FIG. 5 showing the half of FIG. 4 , the tension of the spring 41 normally urges the open end of the angle tooth material 23 on one side so as to push the pin 39 to the fulcrum. For this reason, when the pinching of the sealed portion of the package 20 is started by the both mountain-shaped tooth materials 23 and 24, the sealed portion 20 starts to form a pleat from the middle portion and gradually pulls in both ends. The folds that stand out are formed. Moreover, as shown in FIG. 4, the chevron tooth material 23 is provided with a cooling water passage 42 inside, and the plastic packaging material is cooled integrally with the chevron tooth materials 23 and 24 so that the pleats are prominently formed.
[0012]
In short, as shown in FIG. 1, the rotary bagging machine is provided with sealing bars 17 and 18 in front of the open section “19” due to its structure, and heat is applied to the bag mouth of the packaging material by this sealing bar to perform sealing work. Therefore, the heat remaining in the packaging material is absorbed by the cooling means provided in the pleat-forming sandwiching body 21, and the folds formed in the already-sealed portion are emphasized.
[0013]
The side surface of the auxiliary clamp 50 provided at the tip of the arm 48 that engages the gear 46 with the pinion 45 that is fixed to the driving shaft 27 in FIG. 2 and is connected to the shaft 47 of the gear 46 is as shown in FIG. There, the auxiliary clamp as shown in the figure, provided with fixing claws 52 for fixing to the frame 51, and a movable pawl 56 that is operated pins 53 in piston lot 55 rotates the shaft and the fluid cylinder 54, FIG. 2 The auxiliary clamp 50 also reaches the bundling work line 22 along the rotary track 57 and corresponds to the fold-forming sandwiching body 21 reaching the bundling work line 22 in the carry-out track 30 in the package bag as described below. The mouth is pinched .
[0014]
That is, as shown in FIG. 7, the biting jaw material 36 that sandwiches the already-sealed portion of the package 20 and forms a large number of pleats 60 in the package has a window hole 61 in the middle, and the window hole 61. A slit 62 is formed in the middle of the lower edge (see also the plane of FIG. 4) . Since the movable claw 56 of the auxiliary clamp 50 in FIG. 6 is opened like a virtual line 56A by the operation of the piston lot 55, the auxiliary clamp 50 is simultaneously reached when the pleat forming sandwiching body 21 reaches the binding work line 22 in FIG. Reaches the binding work line 22 and the auxiliary clamp 50 holds the package. In short, the auxiliary clamp 50 shown in phantom lines in FIG. 7 sandwiches the middle of the upper edge of the package 20 at the slit 62 portion .
[0015]
When the package 20 supported by the fold forming sandwich 21 as shown in FIG. 8 reaches the binding work line 22, the back plate 65 and the load value of the package 20 on the fold forming sandwich 21 are expanded downward at that position. The waiting means 66 waits. The means 66 includes a rotating bar 69 supported by a bracket 68 on a vertical axis 67, and a fluid cylinder 70 for operating the bar 69. The bar 69 as shown in FIG. The entire apparatus can be rotated within the range of the arrow 71 in order to avoid the obstacle of the movement of the item. When the package 20 reaches the binding work line 22, the rotation bar 69 approaches the package 20. Then, as shown in FIG. 8, the rotating bar 69 rotates downward as indicated by an arrow to increase the load value of the package 20 downward. That is, as shown in FIG. 10, the downward rotation of the rotary bar 69 pushes down the article to be packaged in the package 20, and the pleat 60 becomes three-dimensional longer.
[0016]
As shown in FIG. 11, a pair of throttle devices 75 pivotally supported by pins 73 on the pedestal 73 are respectively opened on the bundling work line 22 and stand by, but the two throttle devices 75 are relatively close by the power of the lever and the link 76. Is possible. When the other jaw jaw material 36 is pulled away from the one jaw jaw material 37 in FIG. 4, the opposing chevron teeth 23 and 24 tend to be separated from the ends on both sides. That is, it is the state of the chevron teeth 23 and 24 of FIG. At the same time, a pair of the two drawing devices 75 are relatively approached from both sides, and the already-sealed portion of the package supported by the auxiliary clamp 50 is narrowed. Therefore, the pleats that are three-dimensionally elongated in FIG. 10 do not greatly change the state. The narrowed and narrowed portion can be bound by a binding tool.
[Brief description of the drawings]
[Fig. 1] Plan view of bagging and packaging machine [Fig. 2] Relationship between part of the previous diagram and pleat forming sandwich [Fig. 3] Side view of the jaw jaw and its operating means [Fig. 4] Plan view of the pleat forming clamp [FIG. 5] Partial action explanatory diagram of the previous figure [FIG. 6] Side view of the auxiliary clamp and its operating means [FIG. 7] Front view of the pleat forming clamp [FIG. 8] Binding Arrangement explanatory diagram of the device on the work line [FIG. 9] IX-IX arrow line view of the previous diagram [FIG. 10] Front view of the previous diagram [FIG. 11] Arrangement plan view of the device on the binding work line [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Rotor 19 of rotary type bagging machine ... Open section 11 ... Clamp 20 ... Packing body 21 ... Fold formation clamping body 22 ... Bundling work line 23, 24 ... Yamagata tooth material 30 ... Unloading track 36, 37 ... Biting Jaw 39 ... Pin 41 ... Spring 42 ... Cooling means 50 ... Auxiliary clamp 75 ... Drawing device 69 ... Rotating bar (Means for enlarging the load value in the downward direction)

Claims (4)

After the wrapping bag supported by a set of two clampers is intermittently transferred along a circular track and the package is filled with the package in the track, the opening edge of the wrapping bag is heat-sealed, and in the release section A bundling device used in a rotary bag filling machine that releases the completely sealed bag body from the clamp ,
The bundling device is arranged along the carry-out track installed between the release section and the bundling work line set on the front surface thereof, and sandwiches the bag opening of the package in accordance with the package release timing. a pair of plication holding member for unloading the body,
The pleat formation clamping body includes a pair of biting jaws that are relatively separated from each other, and supports the chevron jaws in a state in which the chevron teeth are engaged with each other, and the at least one side 2 The outer end of each of the divided chevron teeth is pivotally supported on the one side jaw jaw material via a pin, and the inner end of each of the two split chevron teeth is opposite to the other chevron tooth on the other side. While configured to be pushed out by a spring in the direction of the material,
The apparatus which installs a pair of aperture | diaphragm | squeezing apparatus which narrows down the pleat of the said package formed with the said pleat formation clamping body on the said binding work line . An auxiliary clamp consisting of a fixed claw and a movable claw that opens and closes with respect to the fixed claw is inserted into a slit between two divided chevron teeth, and the wrapping bag is suspended to match the separation of the pair of biting jaws A trivial device according to claim 1, wherein the pleats of the package are narrowed by a pair of squeezing devices. The apparatus according to claim 1, wherein a cooling water channel is formed inside the engagement jaw material . On the bundling work line, a rotating bar that contacts and suspends the package that is supported by the pleat forming sandwiching body and pushes the package downward is disposed, and the rotating bar is set in accordance with the passage of the package on the carry-out track. The apparatus according to claim 1, wherein the apparatus is installed so as to be retracted out of the carry-out track .