JP2010275059A - Sheet glass carrying direction changing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet glass carrying direction changing device having wholly simplified construction for shortening a time for changing the carrying direction of a sheet glass to shorten a takt time for a whole conveyor line, resulting in improved productivity. <P>SOLUTION: The sheet glass carrying direction changing device includes a standby part 7 on which a sheet glass 5 to be carried in a first carrying direction temporarily stays, a main frame 3 for carrying the sheet glass transferred from the standby part 7 thereon in a second carrying direction, and a transfer mechanism 4 for transferring the sheet glass 5 staying on the standby part 7 onto the main frame 3. The transfer mechanism 4 includes a carrying plate 40 to be moved between the standby part 7 and the main frame 3 in the horizontal and vertical directions so that a bottom portion of the plate glass 5 is placed thereon, a horizontal drive part 20 for reciprocating the carrying plate 40 horizontally in the first carrying direction, and a up-and-down moving mechanism part 30 for moving the carrying plate 40 up and down in the vertical direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sheet glass conveyance direction changing device, and more specifically, is used in a conveyor system installed in a plate glass production line process, and changes the sheet glass conveyance direction to a direction orthogonal to the moving direction so far. It is related with the conveyance direction change apparatus for plate glass.

  In general, a plate glass transport direction change device is used in a conveyor system installed in a plate glass production line process, and a plate glass that has been transported in a predetermined direction (first transport direction) is perpendicular to the direction (second transport). It is a device that changes the direction in the direction and continues the conveyance.

  An example of a sheet glass conveyance direction changing device (diverter) according to a conventional technique will be schematically described. In a conventional sheet glass transport direction changing device, a plurality of first transport rollers for transporting a sheet glass in the first transport direction are arranged in parallel to a second transport direction orthogonal to the first transport direction in a predetermined main frame. A plurality of rotation shafts are arranged and fixed at predetermined intervals, and a plurality of second conveyance rollers for conveying the plate glass in the second conveyance direction are arranged in parallel to the first conveyance direction. A plurality of arrays are fixed to a plurality of rotating shafts at predetermined intervals. Then, for example, the upper and lower portions of the second transport roller are vertically moved by the lifting mechanism so that two heights, that is, a position lower than the top of the first transport roller and a position higher than the top of the first transport roller can be taken. Driven in the direction.

  The plate glass that has been transported in the first transport direction in a state where the uppermost portion of the second transport roller is lower than the uppermost portion of the first transport roller is temporarily stopped on the main frame. Next, the elevating mechanism is driven to move the uppermost part of the second transport roller to a position higher than the uppermost part of the first transport roller, and the plate glass is held on the second transport roller. By rotating the second transport roller in this state, the transport direction of the plate glass is changed from the first transport direction to the second transport direction orthogonal thereto.

  All the first transport rollers are simultaneously rotated in the same direction at the same speed, and similarly, all the second transport rollers are simultaneously rotated in the same direction at the same speed. Further, the first transport roller and the second transport roller are not driven simultaneously. Therefore, in order to prevent the rotation shaft of the first transport roller and the rotation shaft of the second transport roller from spatially interfering with each other, the outer diameter of the second transport roller and the outer diameter of the first transport roller are set larger than the vertical diameter. Structural contrivances are required, such as making the rotational axis position of the second transport roller in the direction lower than the position of the first transport roller.

  In such a conventional sheet glass conveyance direction changing device, a plurality of first conveyance rollers and a plurality of second conveyance rollers are separately arranged, and the second conveyance rollers are moved up and down with respect to the first conveyance rollers. Since it is necessary to separately install an elevating mechanism for performing the direction changing function, the configuration of the apparatus is very complicated, and the facility cost is increased.

  In particular, when switching the transport direction, the article transported in the first transport direction by the first transport roller is temporarily stopped on the main frame, the lifting mechanism is activated in that state, and the uppermost portion of the second transport roller is It is necessary to raise the 2nd conveyance roller so that it may become higher than the uppermost part of the outer peripheral surface of 1 conveyance roller. In the conventional sheet glass transport direction changing device, in order to switch the sheet glass transport direction, it takes time to raise and lower the second transport roller, which increases the takt time of the entire conveyor line and decreases productivity. Had problems.

  The present invention has been made to solve such problems of the conventional example, and by reducing the facility cost by simplifying the configuration of the entire apparatus, the time required for changing the conveyance direction of the plate glass is shortened. And it aims at providing the conveyance direction change apparatus for plate glass which can shorten the tact time of the whole conveyor line, and can improve productivity.

  In order to solve the above-mentioned problem, the invention of claim 1 is used in a conveyor system to change the transport direction of a plate glass transported in the first transport direction to a second transport direction orthogonal to the first transport direction. A plate glass direction changing device, wherein the plate glass conveyed in the first conveying direction is temporarily detained, and is disposed adjacent to the standby unit in the first conveying direction, A main frame for carrying out the plate glass transferred thereon from the standby unit in the second transport direction, and a transfer mechanism for transferring the plate glass placed in the standby unit onto the main frame The transfer mechanism is moved in the horizontal direction and the vertical direction between the standby unit and the main frame in the first transport direction, and the bottom of the plate glass And a horizontal driving unit for reciprocally moving the transport table horizontally in the first transport direction, by transporting the plate glass from the standby unit to the main frame side, An elevating mechanism for elevating and lowering the transport table in the vertical direction is further provided.

  According to a second aspect of the present invention, there is provided the sheet glass conveyance direction changing device according to the first aspect, wherein the horizontal drive unit is configured to drive the drive sprocket coupled to a drive shaft of a motor in parallel with the first conveyance direction. A driven sprocket arranged at a predetermined distance from the sprocket, a chain member stretched so as to connect the drive sprocket and the driven sprocket, and connected to the chain member in the first conveying direction. It is characterized by including a slide plate to be moved.

  According to a third aspect of the present invention, in the sheet glass conveyance direction changing device according to the second aspect, the elevating mechanism is provided on the slide plate, and the conveying table is connected to the elevating mechanism. The transport table is moved along the first transport direction by the horizontal driving unit, and is moved up and down in the vertical direction by the lifting mechanism unit.

  According to a fourth aspect of the present invention, in the sheet glass transport direction changing device according to the second or third aspect, the horizontal drive unit is parallel to a drive mechanism including the drive sprocket, the driven sprocket, and the chain member. A pair of horizontal guide rails arranged at the bottom of the main frame, and a pair of horizontal guide members provided at both ends of the slide plate in the second transport direction and engaged with the horizontal guide rails. Provided, whereby the slide plate is stably horizontally moved in the first transport direction.

  According to a fifth aspect of the present invention, in the sheet glass conveyance direction changing device according to any one of the first to fourth aspects, the conveyance table includes a transverse beam parallel to the second conveyance direction, It has a plurality of vertical beams provided so as to protrude from the main frame side to the standby unit side in one transport direction, and a rear end portion of the vertical beam is fixed to the horizontal beam. .

  According to a sixth aspect of the present invention, there is provided the plate glass transport direction changing device according to the fifth aspect, wherein the elevating mechanism section includes a lifting base provided substantially perpendicular to the upper surface of the slide plate, and a second of the lifting base 32. A pair of vertical guide rails provided on the outer sides of both wall surfaces in the transport direction; and the transport table is provided so as to protrude vertically downward from the bottom surface of the transverse beam, and is movable in the vertical direction. It further has a pair of vertical guide members engaged with the guide rail.

  A seventh aspect of the present invention is the sheet glass transport direction changing device according to the sixth aspect, wherein the elevating mechanism is fixed to a ball screw having a vertical axis as a rotation center and the elevating base, and the ball A horizontal plate having a pair of shaft rotation support bases rotatably supporting both ends of the screw, and a ball nut screwed to the ball screw, and both ends fixed to the pair of straight guide members And a pair of pulleys and a belt, and further includes a belt driving mechanism for transmitting the driving force of the lifting motor to the ball screw.

  According to an eighth aspect of the present invention, there is provided the sheet glass conveyance direction changing device according to the seventh aspect, wherein both end portions of the elevating member and a belt of the belt driving mechanism are provided on both wall surfaces of the elevating base in the second conveying direction. A long through groove is formed in the vertical direction for penetrating.

  A ninth aspect of the present invention is the sheet glass transport direction changing device according to the fifth aspect, wherein a cushion member for safely supporting the plate glass is provided on the upper surface of the transverse beam.

  According to a tenth aspect of the present invention, in the sheet glass conveyance direction changing device according to the fourth aspect, the horizontal guide member is located in a portion adjacent to the front and rear end portions in the first conveyance direction of the horizontal guide rail. A sensing sensor for sensing is provided.

  According to an eleventh aspect of the present invention, in the sheet glass transport direction changing device according to the sixth aspect, a detection sensor is provided on the slide plate for detecting the vertical height of the vertical guide member in the vertical direction. It is characterized by being.

  As mentioned above, according to the conveyance direction change apparatus for plate glass of this invention, the standby part for the plate glass conveyed in a 1st conveyance direction to be detained temporarily, and a standby part in a 1st conveyance direction are adjacent. And a transfer mechanism for transferring the plate glass placed on the standby unit onto the main frame, and a main frame for carrying out the plate glass transferred from the standby unit to the second transfer direction. Since it is provided, the main frame only needs to be provided with a driving roller for transporting the plate glass in the second transport direction. Therefore, it is not necessary to provide a first transport roller for transporting the plate glass in the first transport direction and a second transport roller for transporting the plate glass in the second transport direction. 2 There is no need to raise or lower the transport rollers in the vertical direction. Therefore, a space for the standby unit is required as compared with the conventional sheet glass transport direction changing device, but the configuration of the main frame is very simple, and the facility cost can be reduced.

  Furthermore, after the transfer work of one sheet glass is completed, the next plate glass is transferred to the standby part while the transfer table of the transfer mechanism is moved from the main frame side to the standby part side. The time during which the replacement mechanism is substantially stopped can be eliminated, and the time required to transfer the plate glass from the standby unit to the main frame can be shortened. As a result, it is possible to smoothly change the conveyance direction of the sheet glass continuously conveyed in the production line process of the sheet glass from a predetermined direction (first conveyance direction) to a direction (second conveyance direction) perpendicular thereto.

The perspective view which shows the structure of the conveyance direction change apparatus for sheet glass which concerns on one Embodiment of this invention. The perspective view which shows the detailed structure of the transfer mechanism in the said conveyance direction change apparatus for glass plates. The principal part expansion perspective view of the said transfer mechanism. Sectional drawing which shows the structure of the forward / backward operation | movement function of the said transfer mechanism. The figure which shows the initial state of the said transfer mechanism in the process in which the plate glass of a waiting | standby part is transferred to a main frame. The figure which shows the state by which the conveyance stand of the said transfer mechanism was moved to the standby part side in the process which transfers the plate glass of a standby part to a main frame. The figure which shows a state when a plate glass has been conveyed by the standby part in the process which transfers the plate glass of a standby part to a main frame. The figure which shows the state which tries to lift the plate glass of a standby part upwards by the transfer mechanism in the process of transferring the plate glass of a standby part to a main frame. The figure which shows the state which moved the plate glass of the standby part to the main frame side by the transfer mechanism in the process of transferring the plate glass of the standby part to the main frame. In the process of transferring the plate glass of the standby unit to the main frame, the plate glass of the standby unit is transferred to the main frame by the transfer mechanism, and a direction (second transfer direction) orthogonal to the first transfer direction (first transfer direction). The figure which shows the state which started conveyance.

  Hereinafter, the conveyance direction change apparatus for plate glasses which concerns on one Embodiment of this invention is demonstrated, referring an accompanying drawing. FIG. 1 is a perspective view showing a configuration of a sheet glass transport direction changing device according to the present embodiment. As shown in FIG. 1, the sheet glass transport direction changing device 1 includes a standby unit 7 and a main frame (diverter) 3 arranged in parallel in the first transport direction. The standby unit 7 and the main frame 3 have substantially the same dimensions in the first transport direction, the second transport direction, and the vertical direction, respectively, and the rectangular dimension in the horizontal plane is the maximum dimension of the plate glass 5 that can be transported.

  The standby unit 7 has a plurality of driven rollers 7a that are arranged in a matrix and have a second transport direction orthogonal to the first transport direction as a rotation axis. The standby unit 7 is driven by a roller conveyor (not shown) in the previous step. The plate glass 5 that has been transported in one transport direction is temporarily left on the driven roller 7a. The rotation shaft of each driven roller 7a is individually provided and is supported by a frame arranged in parallel with the second transport direction. That is, there is no penetrating shaft arranged parallel to the first transport direction in the standby unit 7, and allows the transport platform (fork) 40 of the transfer mechanism 4 to be described later to enter.

  The main frame 3 has a plurality of driving rollers 6a that are arranged in a matrix and are fixed to a plurality of rotating shafts 6 arranged in parallel to the first conveying direction at regular intervals. The plate glass 5 transferred from the standby unit 7 to the main frame 3 is conveyed in the second conveying direction by simultaneously rotating the 6a in the predetermined direction at the same speed.

  The main frame 3 is provided with a transfer mechanism (forklift mechanism) 4 for transferring the plate glass 5 placed in the standby unit 7 to the main frame 3 side. FIG. 2 is a perspective view showing a configuration of the transfer mechanism 4, and FIG. 3 is an enlarged perspective view of a main part thereof.

  As shown in FIG. 2, the transfer mechanism 4 is provided so as to protrude from the cross beam 41 parallel to the second transport direction to the standby unit 7 side in parallel to the first transport direction. The carriage 40 (fork) composed of a plurality of vertical beams 42 arranged in parallel with each other, the horizontal drive motor 10 installed at the bottom of the main frame 3, and the power of the motor 10 are transmitted to the carriage 40. Is composed of a horizontal drive unit 20 that moves forward or backward in the first transport direction, an elevating mechanism unit 30 that moves forward or backward in the first transport direction together with the transport table 40, and raises or lowers the transport table 40 in the vertical direction. Yes.

  As shown in FIG. 4, the horizontal drive unit 20 is disposed at a predetermined distance from the drive sprocket 21 parallel to the drive sprocket 21 coupled to the drive shaft 11 of the motor 10 and parallel to the first transport direction. The driven sprocket 22, the chain member 23 stretched so as to connect the drive sprocket 21 and the driven sprocket 22, a housing 24 containing them, and the chain member 23 are connected to be moved in the first conveying direction. A slide plate 31 and the like are provided. Here, as a connection structure of the chain member 23 and the slide plate 31, it is possible to connect by using welding or other various fastening means, but in the present embodiment, the chain member 23 and the slide plate 31 are integrally coupled with the chain member 23, The slide plate 31 is connected to a bottom surface of the slide plate 31 by a rectangular parallelepiped-shaped connecting body 25 that is firmly fixed. Further, it is preferable to form a guide groove for guiding the movement of the connecting body 25 on the upper surface of the housing 24.

  As shown in FIG. 2 or 3, two horizontal guide rails 3 a are provided at the bottom of the main frame 3 in parallel with the housing 24, and at both ends of the slide plate 31 in the second transport direction, A horizontal guide member 34 that is engaged with the horizontal guide rail 3a is provided. The horizontal guide member 34 has a substantially rectangular parallelepiped shape, and an engagement structure (concave / convex shape) is formed on the bottom surface of the horizontal guide member 34 so as to wrap around the outer peripheral surface of the horizontal guide rail 3a. Correspondingly, the horizontal guide rail 3a is engaged with the engaging structure of the horizontal guide member 34 on both side surfaces in the longitudinal direction to guide the movement of the horizontal guide member 34 in the longitudinal direction, that is, the first transport direction. An engagement structure (an uneven structure) is formed. According to such a structure, at the center of the bottom surface of the slide plate 31, the driving force is received from the chain member 23 via the connecting body 25, and both end portions in the second transport direction (to the connecting portion with the connecting body 25). On the other hand, the guide plate 34 is guided by the horizontal guide rail 3a via the horizontal guide member 34, so that the horizontal movement of the slide plate 31 in the first transport direction can be performed stably.

  On the upper surface of the slide plate 31, an elevating mechanism unit 30 for elevating the transport table 40 in the vertical direction is further provided. The elevating mechanism unit 30 is provided substantially vertically on the upper surface of the slide plate 31, and is vertically disposed inside the elevating base 32 having a substantially U-shaped horizontal cross section and the substantially U-shaped horizontal cross section of the elevating base 32. A ball screw 44 provided, a pair of shaft rotation support bases 35 provided on the inner wall surface of the elevating base 32 and rotatably supporting the upper and lower ends of the ball screw 44, and the ball screw 44 are screwed together. It is composed of a horizontal plate-like lifting member 48 provided with a ball nut 45, a pair of pulleys and a belt, etc., and a belt driving mechanism 46 for transmitting the driving force of the lifting motor 47 to the ball screw 44. ing.

  A long bar-shaped vertical guide rail 33 that guides a pair of vertical guide members 43 provided perpendicularly to the bottom surface of the cross beam 41 so as to slide up and down outside both wall surfaces of the elevating base 32 in the second conveying direction. Are provided. The lower end portion of the vertical guide member 43 and the vertical guide rail 33 are not specifically indicated, but the same engagement as the engagement structure (convex structure) provided on the horizontal guide rail 3a via the horizontal guide member 34. A structure is formed. Further, both wall portions of the lifting base 32 in the second transport direction have both end portions of the plate-like lifting member 48 penetrating therethrough and vertically extending through grooves 32a for allowing the belt of the belt driving mechanism 46 to pass therethrough. Is formed. Both ends of the elevating member 48 in the second transport direction are fixed to the pair of vertical guide members 43 by welding or the like. Reference numeral 36 denotes a tension roller that abuts on the outer peripheral surface of the belt of the belt driving mechanism 46 and applies a predetermined tension.

  The cross beam 41 of the transport table 40 is approximately equal to the width of the main frame 3 in the second transport direction, and has a slightly shorter dimension. Further, the vertical beam 42 is substantially equal to the width of the main frame 3 in the first conveying direction and has a slightly shorter dimension than that, and a plurality of (five in the figure) are provided on the horizontal beam 41 with a predetermined gap. Is provided. Each of the horizontal beam 41 and the vertical beam 42 is basically an elongated plate-like body, but may have a rectangular shape (each pipe) having a hollow cross section in order to have a certain strength and reduce the weight. Further, as shown in FIGS. 2 and 3, a spacer or a reinforcing plate may be used. Further, a cushion member 42 a for safely supporting the plate glass 5 is provided on the upper surface of the vertical beam 42. The cushion member 42a preferably has, for example, a dish-shaped structure with a recess formed on the upper surface, and is formed of a flexible and elastic rubber material.

  When the motor 47 is rotationally driven in a predetermined direction, the driving force is transmitted to the ball screw 44 via the belt driving mechanism 46, and the ball screw 44 rotates in the predetermined direction. Since the upper and lower ends of the ball screw 44 are rotatably supported by a shaft rotation support base 35 fixed to the lifting base 32, a lifting member 48 having a ball nut 45 screwed into the ball screw 44 is provided. Are moved in a relatively vertical direction. Since the elevating member 48 is coupled to the cross beam 41 of the transport table 40 via the vertical guide member 43, the transport table 40 is moved in the vertical direction while being guided by the vertical guide member 43 and the vertical guide rail 33. By appropriately switching the rotation direction of the motor 47, the transport table 40 can be moved up and down in the vertical direction as a result. Further, the slide plate 31 can be reciprocated in the first transport direction by appropriately switching the rotation direction of the motor 10. Therefore, by controlling the rotation direction, the rotation speed, the rotation speed, and the like of these two motors 10 and 47 as appropriate, various movements can be made to the transport table 40 in the vertical plane. That is, the transfer mechanism 4 functions as a forklift mechanism.

  At the bottom of the main frame 3, adjacent to the front and rear end portions of the horizontal guide rail 3a in the first transport direction are provided with detection sensors 51 and 52 for detecting that the horizontal guide member 34 is located. A sensing sensor 53 is provided on the slide plate 31 to sense the height at which the vertical guide member 43 moves up and down in the vertical direction. Although not shown, it is obvious that a control device for controlling the operations of the horizontal drive unit 20 and the lifting mechanism unit 30 is provided according to the detection signals of the detection sensors 51, 52, and 53.

  Next, with reference to FIG. 5 thru | or FIG. 10, operation | movement of the conveyance direction change apparatus for plate glasses which concerns on this embodiment is demonstrated. FIG. 5 shows an initial state of the transfer mechanism 4 in the process of transferring the plate glass 5 of the standby unit 7 to the main frame 3. That is, the horizontal drive unit 20 is driven to move the slide plate 31 to the rear end position in the first transport direction, and the lifting mechanism unit 30 is driven to lower the transport base 40 to a predetermined position. In FIG. 5, in the initial state, the plate glass 5 is first transported to the standby unit 7. However, as described later, the plate glass 5 may be transported to the standby unit 7 after the transfer operation is started.

  FIG. 6 shows a state in which the transfer mechanism 4 is driven and the transport table 40 is moved to the standby unit 7 side. That is, only the horizontal driving unit 20 is driven in a state where the transport table 40 is lowered to a predetermined position, and the slide plate 31 is moved to the tip position in the first transport direction. In FIG. 6, the plate glass 5 is not drawn. However, as shown in FIG. 5, even if the plate glass 5 is first transferred to the standby unit 7, the transfer table 40 is lowered, so the plate glass 5 and the transfer table 40. The vertical beams 42 do not interfere spatially. As described above, since the rotation shafts of the driven rollers 7a of the standby unit 7 are individually provided, the vertical beams 42 of the transport table 40 can enter between the driven rollers arranged in the second transport direction, respectively. And can be raised and lowered in the vertical direction.

  FIG. 7 shows a state when the glass sheet 5 is conveyed to the standby unit 7. At this stage, since the conveyance table 40 is lowered, the vertical beam 42 of the conveyance table 40 does not hinder the conveyance of the plate glass 5 in the first conveyance direction. FIG. 8 shows a state where the plate glass 5 of the standby unit 7 is to be lifted upward by the transfer mechanism 4. That is, the lifting mechanism unit 30 is driven to raise the transport table 40 in the vertical direction, and the vertical beam 42 of the transport table 40 is brought into close contact with the bottom surface of the plate glass 5 via the cushion member 42a. At this time, the contact and collision between the plate glass 5 and the vertical beam 42 are buffered by the cushion member 42a between the plate glass 5 and the vertical beam 42.

  FIG. 9 shows a state in which the plate glass 5 of the standby unit 7 is moved to the main frame 3 side by the transfer mechanism 4. That is, the elevating mechanism unit 30 is driven to raise the transport table 40 in the vertical direction, whereby the bottom surface of the plate glass 5 is lifted to a position higher than the uppermost part of the driven roller 7a. In this state, the horizontal drive unit 20 is driven in the reverse direction, and the slide plate 31 is moved to the rear end position in the first transport direction.

  FIG. 10 shows a state in which the plate glass 5 of the standby unit 7 is transferred to the main frame 3 by the transfer mechanism 4 and then transported in the second transport direction orthogonal to the first transport direction, which is the first transport direction. Indicates. That is, after the driving of the horizontal driving unit 20 is stopped, the lifting mechanism unit 30 is driven and the transport table 40 is lowered in the vertical direction. If it does so, the bottom face of the plate glass 5 will contact the uppermost part of the drive roller 6a, and the fall of the plate glass 5 will stop at that time. When the driving of the elevating mechanism 30 is further continued and the transport table 40 is further lowered in the vertical direction, the cushion member 42 a provided on the vertical beam 42 of the transport table 40 is separated from the bottom surface of the plate glass 5. Thereby, the transfer of the plate glass 5 from the standby unit 7 to the main frame 3 is completed. At this time, the transfer mechanism 4 returns to the initial state shown in FIG. And the plate glass 5 is conveyed in the 2nd conveyance direction orthogonal to a 1st conveyance direction by rotationally driving the drive roller 6a in a predetermined direction.

  By continuously repeating the operations shown in FIGS. 5 to 10, the sheet glass transport direction continuously transported in the sheet glass production line process is changed from a predetermined direction (first transport direction) to a direction orthogonal to the second direction (second transport direction). The direction can be smoothly changed in the transport direction). In the example shown in FIGS. 6 and 7, it has been described that the plate glass 5 is conveyed to the standby unit 7 after the vertical beam 42 of the conveyance table 40 is moved to the standby unit 7 side, but is not limited thereto. Instead, as shown in FIG. 5, the plate glass 5 may be conveyed to the standby unit 7 before the vertical beam 42 of the conveyance table 40 is moved to the standby unit 7 side. At the same time when the 40 vertical beams 42 are moved to the standby unit 7 side, the plate glass 5 may be conveyed to the standby unit 7. Thereby, the time required for transferring the glass sheet 5 from the standby unit 7 to the main frame 3 can be shortened. Furthermore, it goes without saying that after the drive of the horizontal drive unit 20 is stopped, the elevating mechanism unit 30 is driven quickly, but the vertical beam 42 of the transport table 40 contacts the plate glass 5 while moving in the first transport direction. And the horizontal driving unit 20 and the lifting mechanism on the condition that the sheet glass 5 is prohibited from contacting the driving roller 6a while being conveyed in the first conveying direction from the standby unit 7 to the main frame 3 side by the conveying table 40. The units 30 may be driven simultaneously.

DESCRIPTION OF SYMBOLS 1 Sheet glass conveyance direction change apparatus 3 Main frame 3a Horizontal guide rail 4 Transfer mechanism 5 Sheet glass 6 Rotating shaft 6a Drive roller 7 Standby part 7a Drive roller 10 Horizontal drive motor 11 Drive shaft 20 Horizontal drive part 21 Drive sprocket 22 Drive sprocket DESCRIPTION OF SYMBOLS 23 Chain member 24 Housing 25 Connection body 30 Elevating mechanism part 31 Slide board 32 Elevating base 32a Through hole 33 Vertical guide rail 34 Horizontal guide member 35 Shaft rotation support stand 36 Tension roller 40 Conveyance stand (fork)
41 Cross beam 42 Vertical beam 42a Cushion member 43 Vertical guide member 44 Ball screw 45 Ball nut 46 Belt drive mechanism 47 Lifting motor 51, 52, 53 Sensor

Claims (11)

A plate glass direction changing device that is used in a conveyor system to change the conveyance direction of a plate glass conveyed in a first conveyance direction to a second conveyance direction orthogonal to the first conveyance direction,
A standby section for temporarily detaining the plate glass conveyed in the first conveying direction;
A main frame for unloading the plate glass, which is arranged adjacent to the standby unit in the first transport direction and transferred from the standby unit, in the second transport direction;
A transfer mechanism for transferring the plate glass placed in the standby unit onto the main frame;
The transfer mechanism is
In the first transport direction, the sheet glass is moved in the horizontal direction and the vertical direction between the standby unit and the main frame, and the bottom of the plate glass is placed thereon, whereby the plate glass is moved from the standby unit to the main frame. A transport stand for transporting to the frame side;
A horizontal drive unit that horizontally reciprocates the transport table in the first transport direction;
A sheet glass transport direction changing device, further comprising an elevating mechanism for vertically moving the transport table. The horizontal drive unit is
A drive sprocket coupled to the drive shaft of the motor;
A driven sprocket disposed parallel to the first transport direction and spaced apart from the drive sprocket by a predetermined distance;
A chain member stretched to connect the drive sprocket and the driven sprocket;
The conveyance direction change apparatus for plate glasses according to claim 1, comprising a slide plate connected to the chain member and moved in the first conveyance direction.   The elevating mechanism is provided on the slide plate, and the transfer platform is connected to the elevating mechanism, so that the transfer platform is moved along the first transfer direction by the horizontal drive unit. The sheet glass transport direction changing device according to claim 2, wherein the sheet glass is vertically moved by the lifting mechanism.   The horizontal drive unit includes a pair of horizontal guide rails arranged at the bottom of the main frame in parallel with a drive mechanism including the drive sprocket, the driven sprocket, and the chain member, and the second drive direction in the second transport direction. A pair of horizontal guide members provided at both ends of the slide plate and engaged with the horizontal guide rail are further provided, whereby the slide plate is stably horizontally moved in the first transport direction. The conveyance direction changing apparatus for plate glass according to claim 2 or 3.   The transfer table includes a horizontal beam parallel to the second transfer direction and a plurality of vertical beams provided so as to protrude from the main frame side to the standby unit side in the first transfer direction. The conveyance direction change apparatus for plate glasses as described in any one of Claims 1 thru | or 4 with which the rear-end part of the beam is being fixed to the said horizontal beam. The elevating mechanism unit further includes an elevating base provided substantially vertically on the upper surface of the slide plate, and a pair of vertical guide rails provided on both outer walls of the elevating base 32 in the second transport direction,
The transport table further includes a pair of vertical guide members which are provided so as to protrude vertically downward from the bottom surface of the cross beam and are engaged with the pair of vertical guide rails so as to be movable in the vertical direction. The conveyance direction changing apparatus for plate glasses according to claim 5. The lifting mechanism is
A ball screw with a vertical axis as the center of rotation;
A pair of shaft rotation support bases fixed to the elevating base and rotatably supporting both end portions of the ball screw;
A horizontal plate-like elevating member comprising a ball nut screwed to the ball screw and having both ends fixed to the pair of straight guide members;
The sheet glass conveying direction changing device according to claim 6, further comprising a belt driving mechanism configured to include a pair of pulleys and a belt, and transmitting a driving force of a lifting motor to the ball screw. .   The both vertical wall surfaces of the elevating base in the second conveying direction are formed with through-grooves that are long in the vertical direction through which both end portions of the elevating member and the belt of the belt driving mechanism penetrate. Item 8. A sheet direction conveyance device for sheet glass according to Item 7.   The conveyance direction change apparatus for plate glasses according to claim 5, wherein a cushion member for safely supporting the plate glass is provided on an upper surface of the horizontal beam.   The plate glass according to claim 4, wherein a detection sensor for detecting the position of the horizontal guide member is provided in a portion of the horizontal guide rail adjacent to the front and rear end portions in the first transport direction. Transport direction changer.   The sheet glass transport direction changing device according to claim 6, wherein a sensing sensor is provided on the slide plate for sensing the height of the vertical guide member that moves up and down in the vertical direction.

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