JP6427952B2 - Transport device - Google Patents

Description

  The present invention relates to a transport apparatus.

  In recent years, for example, ultrathin glass or resin sheets having a thickness of 1 mm or less have been used in various products. In order to cut such a thin workpiece such as glass or a resin sheet into a predetermined size, for example, the thin workpiece in the feeding section is fed out (drawn) by a predetermined length and cut by a cutting device. At that time, as a mechanism for feeding or pulling out a thin workpiece by a predetermined length, a mechanism for feeding it out by a belt conveyor, or a mechanism for holding and pulling out a thin workpiece by a clamp is generally used.

  In particular, when high accuracy is required for the cut dimensions, it is common to hold a thin workpiece by a clamp and convey it by pulling it out so that the feed length (drawer length) is constant (for example, Patent Document 1).

JP-A 64-2894

When a thin workpiece is pulled out (conveyed) using a clamp and cut with a cutting device, it cannot be cut with good dimensional accuracy when the thin workpiece is bent, so many clamps are usually used to eliminate the deflection of the thin workpiece. Is used to hold thin workpieces at multiple points.
However, if a thin workpiece is held at multiple points using a large number of clamps, wrinkles are formed on the thin workpiece and damage is caused.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a conveying apparatus that can cut a thin workpiece into a desired dimension with high accuracy without damaging the thin workpiece. There is.

  The transport device of the present invention is a transport device that transports a thin workpiece from a delivery section and transports the thin workpiece on a transport path, on the leading end side of the thin workpiece that is fed onto the transport path, from the leading end by a preset length. A pair of first movable holding members that detachably hold both side ends of the part located on the delivery part side and convey on the conveyance path, and both sides on the delivery part side of the thin workpiece fed on the conveyance path A pair of fixed holding members that detachably hold end portions, a cutting device that cuts the thin workpiece in the width direction between the first movable holding member and the fixed holding member, and the first movable holding A pair of second movable members that further detachably hold both end portions on the distal end side from the portion held by the first movable holding member on the distal end side of the thin workpiece that has been conveyed by the member, and further convey on the conveyance path. Comprises a support member, the, wherein the first movable holding member and the fixed holding member, wherein the tensioning mechanism for imparting tension to the thin material workpiece by pulling the thin workpiece is provided.

  Another conveying apparatus of the present invention is a conveying apparatus that conveys a thin workpiece from the feeding section and conveys the thin workpiece on the conveying path, and has a leading edge of a preset length on the leading end side of the thin workpiece that has been fed onto the conveying path. Further, a pair of first movable holding members that detachably hold both side ends of the part located on the delivery part side and convey on the conveyance path, and the delivery part side of the thin workpiece fed on the conveyance path A fixed holding member that holds the entire width direction, a cutting device that cuts the thin workpiece in the width direction between the first movable holding member and the fixed holding member, and transported by the first movable holding member A pair of second movable holding members that further detachably hold both end portions on the tip side from a portion held by the first movable holding member on the tip side of the thin workpiece that has been detachably held on the conveyance path; Wherein the the first movable holding member, wherein the tensioning mechanism for imparting tension to the thin material workpiece by pulling the thin workpiece is provided.

  In the transport apparatus, the delivery unit is formed by an unwinding roll that unwinds the thin workpiece, and the thin workpiece unwound from the delivery unit is interposed between the delivery unit and the fixed holding member. It is preferable that a turn bar for absorbing the deflection is provided.

  In the transport apparatus, it is preferable that the pair of first movable holding members is provided with a synchronization mechanism that simultaneously moves the thin workpiece in the transport direction at the same speed.

According to the transport device of the present invention, the first movable holding member and the fixed holding member are provided with the tension applying mechanism that applies tension to the thin workpiece by pulling the thin workpiece, so that the fixed holding member holds the thin workpiece. After that, the thin workpiece can be prevented from bending by pulling the thin workpiece with the first movable holding member and the fixed holding member by the tension applying mechanism and applying tension to the thin workpiece. Therefore, since the thin workpiece can be cut by the cutting device without bending the thin workpiece, the thin workpiece can be accurately cut to a desired dimension.
Further, since the thin workpiece is held by the pair of first movable holding members and the pair of fixed holding members, it is possible to prevent the thin workpiece from being damaged as in the case of holding at a plurality of points. be able to.
Further, since the pair of first movable holding members hold the both side end portions of the portion located on the feeding portion side from the tip by a preset length on the tip side of the thin workpiece, the pair of second movable holding members The holding member can reliably hold both end portions on the distal end side from the portion held by the first movable holding member on the distal end side of the thin workpiece without being interfered with the first movable holding member. Therefore, the thin workpiece can be smoothly transferred from the first movable holding member to the second movable holding member.

According to another conveying apparatus of the present invention, since the first movable holding member is provided with a tension applying mechanism that applies tension to the thin workpiece by pulling the thin workpiece, the fixed holding member holds the thin workpiece. The thin workpiece can be prevented from being bent by pulling the thin workpiece with the first movable holding member by the tension applying mechanism and applying tension to the thin workpiece. Therefore, since the thin workpiece can be cut by the cutting device without bending the thin workpiece, the thin workpiece can be accurately cut to a desired dimension.
Further, since the thin workpiece is held by the pair of first movable holding members and the fixed holding member, it is possible to prevent the thin workpiece from being damaged as in the case of holding at a plurality of points. it can.
Further, since the pair of first movable holding members hold the both side end portions of the portion located on the feeding portion side from the tip by a preset length on the tip side of the thin workpiece, the pair of second movable holding members The holding member can reliably hold both end portions on the distal end side from the portion held by the first movable holding member on the distal end side of the thin workpiece without being interfered with the first movable holding member. Therefore, the thin workpiece can be smoothly transferred from the first movable holding member to the second movable holding member.

It is a side view which shows schematic structure of 1st Embodiment of the conveying apparatus which concerns on this invention. It is a top view of a conveyance path. (A) is a side view for demonstrating schematic structure of a fixed holding member, (b) is a side view for demonstrating schematic structure of a 1st movable holding member. It is a top view for demonstrating the holding position of the thin workpiece W by the 1st movable holding member. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a side view for demonstrating operation | movement of the conveying apparatus shown in FIG. It is a top view for demonstrating the fixed holding member of 2nd Embodiment of the conveying apparatus which concerns on this invention.

Hereinafter, the conveying apparatus of the present invention will be described in detail with reference to the drawings. In the following drawings, the scale of each member is appropriately changed to make each member a recognizable size.
FIG. 1 is a side view showing a schematic configuration of a first embodiment of a transport apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a transport apparatus.

  The transport device 1 feeds and transports a thin workpiece W made of, for example, an ultrathin glass or resin sheet having a thickness of 1 mm or less from a feeding section, and cuts (cuts) the workpiece into a predetermined dimension, and then cuts the thin workpiece. It is an apparatus that further conveys W. Here, the thin workpiece W made of such an ultra-thin glass or resin sheet usually has a product quality area at its center, so it is recommended to avoid holding such product quality area directly. It is normal. Therefore, in such a thin workpiece W, generally, a peripheral portion called an “ear” that is outside the product quality area, that is, a non-product quality area at both side ends in the width direction of about 5 mm to 10 mm is directly held. It becomes an area.

  As shown in FIG. 1, the transport apparatus 1 includes a sending part 2 and a transport path 3 that transports the thin workpiece W sent from the sending part 2, and further includes a pair of fixed holding members 4 and a pair of first members. The movable holding member 5, the cutting device 6, and a pair of second movable holding members 7 are provided. (In FIG. 1, one each of the fixed holding member 4, the first movable holding member 5, and the second movable holding member 7 is shown.)

  In the present embodiment, the delivery unit 2 is composed of an unwinding roll for unwinding the thin workpiece W, and is connected to the roll shaft (not shown) around which the thin workpiece W is wound, and rotates the roll shaft. And a drive source such as a motor. The drive source is provided with a control unit (not shown) that controls the rotation speed of the roll shaft. The control unit basically controls the rotation speed of the roll shaft to be substantially constant, thereby keeping the unwinding speed (feeding speed) of the thin workpiece W from the unwinding roll (feeding section 2) constant. As the thin workpiece W, the ultrathin glass or the resin sheet as described above is used.

  The conveyance path 3 is arranged on the delivery side of the delivery unit 2, and a plurality of long and thin plate-like conveyance units 8 are aligned along the conveyance direction of the thin workpiece W, as shown in FIG. Arranged and configured. In the present embodiment, the transport path 3 includes a first transport path 3a located on the delivery unit 2 side, and a second transport path 3b disposed on the downstream side of the first transport path 3a. In the present embodiment, the transport unit 8 does not continue between the first transport path 3a and the second transport path 3b, and the transport unit 8 is independent of the first transport path 3a and the second transport path 3b. Has been placed. However, the conveyance unit 8 may be continuously arranged between the first conveyance path 3a and the second conveyance path 3b.

  The conveyance unit 8 has a known configuration such as a floating type by ejecting air or a belt conveyor type. In the present embodiment, since the product quality area that is the center of the thin workpiece W is not directly held, it is preferable that the product quality area is conveyed in a non-contact manner. The floating transport unit 8 has a large number of air ejection holes (not shown) on the upper surface thereof, and an air supply source is connected to the air ejection holes via a pipe so that the air ejection holes are separated from the air ejection holes. A certain amount of air is ejected, and thereby, the thin workpiece W is floated above the upper surface of the transport unit 8 (transport path 3).

  On both sides of the first transport path 3a, first clamp rails 9 are arranged along the transport direction of the first transport path 3a. These first clamp rails 9 are provided with a fixed holding member 4 on the upstream side (feeding portion 2 side) and a first movable holding member 5 on the downstream side of the fixed holding member 4.

  The fixed holding member 4 is attached to the first clamp rail 9 in a state of being fixed via an attachment member (not shown). That is, the fixed holding member 4 is fixed without moving along the length direction of the first clamp rail 9 (the transport direction of the first transport path 3a). Note that the fixed holding member 4 may be fixed to the transport unit 8 (first transport path 3a) or the like via an mounting member (not shown) without being attached to the first clamp rail 9.

  The fixed holding member 4 is a clamp having a lower plate 4a and an upper plate 4b as shown in FIG. 3 (a). The lower plate 4a and the upper plate 4b are indicated by an arrow A in FIG. 3 (a). As shown, it is formed so as to be able to contact and separate by an air cylinder (not shown). In the illustrated example, the lower plate 4a is moved up and down with respect to the upper plate 4b so as to be able to contact and separate. When the lower plate 4a and the upper plate 4b are brought into and out of contact with each other by such an air cylinder, the fixed holding member 4 holds the thin workpiece W in a detachable manner.

  Further, the fixed holding member 4 is provided with an air cylinder (not shown) different from the air cylinder, and the fixed holding member 4 is moved by an arrow in FIG. As shown by B, it is configured to advance and retreat with respect to the first transport path 3a. With this configuration, the fixed holding member 4 can apply tension to the thin workpiece W by holding and pulling the thin workpiece W (the air cylinder moves backward) as will be described later. That is, the fixed holding member 4 is provided with a tension applying mechanism including an air cylinder. In addition, as such a tension | tensile_strength provision mechanism, it is good also as a structure using biasing members, such as a spring, instead of an air cylinder.

  The first movable holding member 5 is movably attached to the first clamp rail 9. In other words, the first clamp rail 9 is configured to reciprocate along the length direction (the conveyance direction of the first conveyance path 3a). Here, the first clamp rail 9 includes, for example, a ball screw mechanism or a linear motor mechanism, and the moving speed and moving distance of the first movable holding member 5 are controlled with high accuracy.

  Moreover, in this embodiment, a pair of 1st movable holding member 5 and the 1st movable holding member 5 which are arrange | positioned at the both sides of the 1st conveyance path 3a connect the 1st clamp rail 9 with an independent drive source (actuator), respectively. It is configured to be able to reciprocate. And these drive sources are comprised so that it may be synchronized by the control apparatus (not shown) connected to these. That is, the drive sources of the pair of first movable holding members 5 and the first movable holding members 5 that respectively move the first clamp rails 9 on both sides and the first clamp rails 9 are synchronized by the control device. Thus, the movement start, movement speed, and movement stop are the same. Therefore, when the first movable holding member 5 and the first movable holding member 5 convey the thin workpiece W in the conveyance direction as will be described later by a synchronization mechanism including the first clamp rail 9, the drive source, and the control device, They are moved simultaneously at the same speed and stopped simultaneously.

  Such a synchronization mechanism is preferably used particularly when the thin workpiece W is large (for example, the width is 1 m or more). That is, when the thin workpiece W is relatively small and the width thereof is, for example, less than 1 m, the width of the transport path 3 (first transport path 3a) is also shortened (narrow), and thus the pair of first movable holding members 5, The interval between the first movable holding members 5 is also shortened (narrow). Therefore, the pair of first movable holding members 5 and the first movable holding member 5 can be easily moved together by connecting them together by the connecting members.

  However, if the thin workpiece W becomes larger and the width of the conveying path 3 (first conveying path 3a) becomes longer (wider), the length of the connecting member becomes longer and heavier. Then, since a large load is applied to a drive source such as a motor for moving the pair of first movable holding member 5, the first movable holding member 5 and the connecting member integrally, it is necessary to enlarge this drive source. Correspondingly, cost and occupied area become large. Therefore, cost reduction and space saving of the transfer device 1 are impaired. On the other hand, by providing the above-described synchronization mechanism, it is possible to reduce the cost and save space of the transport device 1 particularly when the thin workpiece W is large.

  The first movable holding member 5 is basically the same as the fixed holding member 4 except that the first movable holding member 5 is provided on the first clamp rail 9 so as to be reciprocally movable. That is, the first movable holding member 5 is a clamp having a lower plate 5a and an upper plate 5b as shown in FIG. 3 (b). The lower plate 5a and the upper plate 5b are shown in FIG. 3 (b). As shown by the arrow A, it is formed so as to be able to contact and separate by an air cylinder (not shown). In the illustrated example, the lower plate 5a is moved up and down with respect to the upper plate 5b so as to be able to contact and separate. When the lower plate 5a and the upper plate 5b are brought into and out of contact with each other by such an air cylinder, the first movable holding member 5 also holds the thin workpiece W in a detachable manner.

  The first movable holding member 5 is also provided with an air cylinder (not shown) different from the air cylinder, and the first movable holding member 5 is also shown in FIG. ) As shown by an arrow B in the figure, it is configured to advance and retreat with respect to the first conveyance path 3a. With such a configuration, the first movable holding member 5 can also apply tension to the thin workpiece W by holding and pulling (retreating) the thin workpiece W as described later. That is, the first movable holding member 5 is provided with a tension applying mechanism including an air cylinder. In addition, it is good also as a structure using biasing members, such as a spring, instead of an air cylinder also as such a tension | tensile_strength provision mechanism.

  As shown in FIG. 2, the second clamp rails 10 are arranged on both sides of the second transport path 3b along the transport direction of the second transport path 3b. A movable holding member 7 is provided. The 2nd movable holding member 7 is comprised similarly to the 1st movable holding member 5, and is attached to the 2nd clamp rail 10 so that a movement is possible. That is, it is configured to be able to reciprocate along the length direction of the second clamp rail 10 (the conveyance direction of the second conveyance path 3b). Similarly to the first clamp rail 9, the second clamp rail 10 is also provided with a ball screw mechanism and a linear motor mechanism, whereby the second movable holding member 7 also has a high moving speed and moving distance. It is controlled.

  In the present embodiment, the pair of second movable holding members 7 and the second movable holding member 7 are also provided with a synchronization mechanism, like the pair of first movable holding members 5 and first movable holding member 5. Thus, when the thin workpiece W is conveyed in the conveying direction, the pair of second movable holding members 7 and the second movable holding member 7 are simultaneously moved at the same speed and stopped simultaneously.

  The second movable holding member 7 is basically the same as the first movable holding member 5 shown in FIG. 3B except that the second movable holding member 7 is provided on the second clamp rail 10 so as to be reciprocally movable. ing. That is, the second movable holding member 7 is also a clamp having a lower plate and an upper plate, and holds the thin workpiece W detachably between the lower plate and the upper plate. However, the second movable holding member 7 may be provided with a tension applying mechanism similarly to the first movable holding member 5 or may not be provided with a tension applying mechanism.

  Further, as shown in FIG. 1, the conveying device 1 is provided with a cutting device 6 above the delivery path 2 side of the conveying path 3. The cutting device 6 is configured to cut the thin workpiece W in the width direction, for example, by moving the cutting blade up and down or horizontally. In such a cutting device 6, as will be described later, the leading end side of the thin workpiece W is held by the first movable holding member 5, the rear end side (feeding portion 2 side) is held by the fixed holding member 4, and further tension is applied. Thus, the thin workpiece W is controlled to be cut in a state in which the thin workpiece W is not bent.

  Further, in the present embodiment, the turn bar 11 is disposed between the feeding unit 2 composed of the unwinding roll and the fixed holding members 4 fixedly disposed on both sides of the conveyance path 3. Further, upstream and downstream presser bars 12 and 13 are respectively arranged before and after the turn bar 11.

  The turn bar 11 has a semi-cylindrical shape (may be a cylindrical shape) whose upper surface is curved in an arc shape when viewed from the side with an axis along the width direction of the thin workpiece W as a center. It is configured to be movable up and down by being connected to (not shown). A control device (not shown) for controlling the raising and lowering of the turn bar 11 is connected to the raising and lowering mechanism, and the raising and lowering of the turn bar 11 is controlled by the control device so that the turn bar 11 moves in the length direction of the thin workpiece W (conveying direction). ) Is absorbed. That is, the turn bar 11 supports the lower surface of the thin workpiece W and slides it while moving it up and down to absorb the bending of the thin workpiece W.

The upstream side presser bar 12 is arranged on the upstream side of the turn bar 11, and cooperates with the turn bar 11 by pressing the upper surface side of the thin workpiece W fed from the feed part 2 in the entire width direction. It is comprised so that the bending may be eliminated.
The downstream pressing bar 13 is disposed on the downstream side of the turn bar 11, and the upper surface side of the thin workpiece W that has passed through the turn bar 11 is pressed in the entire width direction thereof, so that the bending is performed in cooperation with the turn bar 11. It is configured to eliminate.

  Moreover, the transfer apparatus 14 is arrange | positioned above the 2nd conveyance path 3b in the conveying apparatus 1. FIG. The transfer device 14 sucks and holds the cut thin workpiece W that has been transported to the second transport path 3b, and then stores it in the vicinity of the second transport path 3b (for example, a side) ( Then, the thin workpiece W is detached and placed on the storage unit for storage.

Next, the operation of the transport apparatus 1 having such a configuration will be described.
First, as shown in FIG. 1, the thin workpiece W is fed out (unwinded) from the feed section 2, and the tip end side thereof is held by the first movable holding member 5. At this time, in the present embodiment, as shown in FIG. 4, both sides of a portion located on the leading end side of the thin workpiece W and at a predetermined length L1 on the delivery unit 2 side from the leading end of the thin workpiece W. Hold the end. Here, the first movable holding member 5 retains the preset length L1 when the thin workpiece W is handed over to the second movable holding member 7 as will be described later. This is because the front end side of the thin workpiece W can be held without being interfered by the first movable holding member 5.

  Therefore, the preset length L1 is set to a length longer than the length L2 of the lower plate and the upper plate of the second movable holding member 7 (length along the conveyance direction of the thin workpiece W). Note that, in the first movable holding member 5 and the second movable holding member 7, the lengths of the lower plate and the upper plate are formed to be the same, and are usually formed to be about 50 mm to 200 mm. Therefore, the length L1 is longer than 50 mm to 200 mm, preferably 20 mm to 50 mm longer than L2, which is the length L2 of the second movable holding member 7.

  When the thin workpiece W is held by the first movable holding member 5 in this way, the feeding portion 2 feeds (unwinds) the thin workpiece W at a constant speed during that time, so that the feeding amount is absorbed. In order to prevent (absorb) bending, the turn bar 11 is raised as shown in FIG. As for the rising speed and the rising amount of the turn bar 11, for example, the feeding amount of the thin workpiece W from the feeding portion 2 at the stop time of the first movable holding member 5 is calculated in advance, and without bending the thin workpiece W, In addition, the feed amount is set so as to be absorbed without being pulled too much. And a raising / lowering mechanism is controlled by a control apparatus so that it may become as set, and the turn bar 11 is raised.

  Next, as shown in FIG. 6, the first movable holding member 5 is moved along the first clamp rail 9 to the second conveyance path 3 b side, and the thin workpiece W is caused to travel on the conveyance path 3. As a result, the thin workpiece W passes under the cutting device 6 at the tip side. At that time, since the above-described synchronization mechanism works on the pair of first movable holding members 5 and the first movable holding member 5, the moving speed or the like between the pair of first movable holding members 5 and the first movable holding member 5 is increased. Therefore, the thin workpiece W travels evenly on both the left and right sides without tilting between the left and right sides. Further, when the thin workpiece W is caused to travel in this way, the difference between the feeding speed of the thin workpiece W from the feeding section 2 and the traveling speed of the thin workpiece W due to the movement of the first movable holding member 5 is absorbed. The turn bar 11 is lowered in order to prevent W bending or the like.

  When the first movable holding member 5 reaches a preset position, the traveling is stopped, and both end portions of the thin workpiece W on the delivery part 2 side by the fixed holding member 4 as shown by a two-dot chain line in FIG. Hold. Subsequently, the tension applying mechanisms of the first movable holding member 5 and the fixed holding member 4 are operated, respectively, and the thin workpieces W are pulled sideways as indicated by arrows in FIG. (The air cylinder constituting the tension applying mechanism is retracted with respect to the conveyance path 3.) Then, the thin workpiece W is given tension by pulling the front end side and the rear end side outward (side). By this, it will be in the state stretched without bending. Therefore, after the tension is applied to the thin workpiece W to eliminate the bending, the thin workpiece W is cut in the width direction by the cutting device 6 as shown in FIG. That is, the thin workpiece W is cut at a cutting position 22 indicated by a broken line in FIG.

  When the leading end side of the thin workpiece W is cut in this way, the cutting blade of the cutting device 6 is raised as shown in FIG. 8, and the first movable holding member 5 is moved to the second transport path 3b side. And the front end side of the thin work W is conveyed to the position where the 2nd movable holding member 7 on the 2nd conveyance path 3b waits. Subsequently, the distal end side of the thin workpiece W that has been conveyed is held by the second movable holding member 7. That is, as indicated by a two-dot chain line in FIG. 4, the tip end side of the portion held by the first movable holding member 5 is held by the second movable holding member 7.

  At that time, the first movable holding member 5 holds the portion located on the leading end side of the thin workpiece W and on the feeding portion 2 side from the leading end of the thin workpiece W by a preset length L1. The second movable holding member 7 can hold the distal end side of the thin workpiece W without being interfered with the first movable holding member 5. Therefore, the thin workpiece W can be smoothly delivered from the first movable holding member 5 to the second movable holding member 7. That is, when the thin workpiece W is held by the second movable holding member 7 in this way, the holding of the thin workpiece W by the first movable holding member 5 is released.

  Then, the first movable holding member 5 released from holding the thin workpiece W is moved to the initial position as shown in FIG. In addition, about the tension | tensile_strength provision mechanism of the 1st movable holding member 5, after cut | disconnecting the thin workpiece W, it returns to the initial state, ie, the state advanced to the conveyance path 3 side, in an appropriate step. Further, the tension applying mechanism of the fixed holding member 4 holding the subsequent thin workpiece W after cutting is also returned to the initial state at an appropriate stage.

  On the other hand, the thin workpiece W is cut and conveyed to the position immediately below the transfer device 14 as shown in FIG. 9 by moving the second movable holding member 7 holding the workpiece. Subsequently, as shown in FIG. 10, the transfer device 14 is lowered to hold the thin workpiece W by suction, and the holding of the thin workpiece W by the second movable holding member 7 is released. Then, the second movable holding member 7 is further moved and separated from the transfer device 14 as shown in FIG. 11, and then the thin workpiece W is transferred to a storage unit (not shown) by the transfer device 14 as shown in FIG. To do.

Further, while the thin workpiece W cut in this way is being transferred by the transfer device 14, as shown in FIG. 12, the first movable holding member 5 is used to set a predetermined portion on the leading end side of the subsequent thin workpiece W. While holding, the holding of the thin workpiece W by the fixed holding member 4 is released. Moreover, about the 2nd movable holding member 7, it moves to the delivery place of the thin workpiece W after a cutting | disconnection shown in FIGS.
Thereafter, by sequentially repeating the steps shown in FIGS. 1 to 12, the thin workpiece W wound around the delivery unit 2 is sequentially delivered, cut into a predetermined size and conveyed, and then transferred by the transfer device 14. In this way, it is stored in the storage unit sequentially.

  In the transport device 1 of this embodiment, the first movable holding member 5 and the fixed holding member 4 are provided with a tension applying mechanism that applies tension to the thin workpiece W by pulling the thin workpiece W. After holding the thin workpiece W, the thin workpiece W is bent by pulling the thin workpiece W with the first movable holding member 5 and the fixed holding member 4 by the tension applying mechanism and applying tension to the thin workpiece W. Can be prevented. Therefore, since the thin workpiece W can be cut by the cutting device 6 without bending the thin workpiece W, the thin workpiece W can be accurately cut to a desired dimension.

Further, since the thin workpiece W is held by the pair of first movable holding members 5, the first movable holding member 5, the pair of fixed holding members 4, and the fixed holding member 4, the conventional workpiece is held at multiple points. Thus, it is possible to prevent the thin workpiece W from being damaged.
Further, the pair of first movable holding members 5 and the first movable holding members 5 are provided with the length L1 set in advance on the front end side of the thin workpiece W, and the both side end portions of the portion located on the delivery unit 2 side from the front end. Since it is configured to hold, the pair of second movable holding members 7 and the second movable holding member 7, the both end portions on the tip side from the portion held by the first movable holding member 5 on the tip side of the thin workpiece W are The first movable holding member 5 can be reliably held without being interfered with. Therefore, the thin workpiece W can be smoothly delivered from the first movable holding member 5 to the second movable holding member 7.

  Further, the delivery part 2 is formed by an unwinding roll for unwinding the thin work W, and the bending of the thin work W unwound from the delivery part 2 is absorbed between the delivery part 2 and the fixed holding member 4. Since the turn bar 11 is provided, even when the traveling of the thin workpiece W is stopped at the front end side, such as when the thin workpiece W is cut, the feeding of the feeding section 2 is stopped by adjusting the turn bar 11. It can be rotated at a constant speed and sent out (unwinded). Accordingly, when the unwinding roll is stopped or accelerated / decelerated, the thin work W being wound is disturbed and the thin work W is meandering when unwound. .

  In addition, the pair of first movable holding members 5 and the first movable holding member 5 are provided with a synchronization mechanism that simultaneously moves the thin workpiece W at the same speed when the thin workpiece W is transported in the transport direction. It can be made to travel evenly on both the left and right sides without tilting. Therefore, the thin workpiece W can be accurately cut into a desired dimension by stably transferring the thin workpiece W as set.

Next, a second embodiment of the transfer apparatus according to the present invention will be described. The conveyance device of the second embodiment is different from the conveyance device 1 of the first embodiment in the configuration of the fixed holding member.
As shown in FIG. 13, the fixed holding member 20 according to the second embodiment is composed of a pair of long plates longer than the width of the thin workpiece W so that the entire width direction of the thin workpiece W can be held.

  That is, the fixed holding member 20 is constituted by an elongated lower long plate (not shown) provided in the conveying path 3 (first conveying path 3a), and an elongated upper elongated plate 20a disposed immediately above the lower elongated plate. Is formed. The upper long plate 20a is connected to an elevating mechanism such as an air cylinder so that it can move up and down, that is, can be brought into contact with and separated from the lower long plate through a thin workpiece W. Thereby, the fixed holding member 20 composed of the lower long plate and the upper long plate 20a functions as a clamp, and holds the thin workpiece W detachably in the entire width direction thereof.

  In this embodiment, since the lower long plate is disposed in the first transfer path 3a, the transfer unit 8 (see FIG. 2) constituting the first transfer path 3a is divided before and after the lower transfer plate. Formed and arranged. That is, the transport unit 8 constituting the first transport path 3a is disposed before and after the lower long plate.

  Further, in the present embodiment, the fixed holding member 20 is disposed so as to hold a position to be cut by the cutting device 6, that is, a predetermined cutting line 21 indicated by a two-dot chain line in FIG. 13. As shown in FIG. 7, the scheduled cutting line 21 is transported to a predetermined position by the first movable holding member 5 at the leading end side of the thin workpiece W, and when it is stopped, the cutting planned line 21 is positioned immediately below the cutting device 6. A virtual line to be cut.

  Therefore, in the present embodiment, the distance between the cutting position 22 by the cutting device 6 indicated by a broken line in FIG. 13, that is, the position of the cutting device 6, and the fixed holding member 20 (more precisely, the scheduled cutting line 21). The thin workpiece W to be cut is designed to have the same size as that in the conveyance direction. The fixed holding member 20 is arranged such that a center line extending in the length direction is positioned on the planned cutting line 21.

The part cut by the cutting device 6 is a part that becomes the front and rear end edges of the thin workpiece W after cutting, and is a peripheral part called “ear” outside the product quality area. Therefore, since this peripheral edge is finally cut off, there is no problem even if it is directly held by the fixed holding member 20. The width of the fixed holding member 20 is, of course, formed to a length within twice the width of the outside (ear) of the product quality area.
Further, since the fixed holding member 20 holds the entire width direction of the thin workpiece W at the same time, the thin workpiece W is prevented from bending at or near the holding portion.

  Therefore, in the transport apparatus according to the present embodiment, after the thin workpiece W is held by the fixed holding member 20 in the entire width direction, the thin workpiece is moved by the first movable holding member 5 by the tension applying mechanism as in the first embodiment. By pulling the tip side of W to the side and applying tension to the thin workpiece W, it is possible to prevent the thin workpiece W from being bent. Therefore, since the thin workpiece W can be cut by the cutting device 6 without bending the thin workpiece W, the thin workpiece W can be accurately cut to a desired dimension.

Further, since the thin workpiece W is held by the pair of first movable holding members 5 and the fixed holding member 20, the thin workpiece W is damaged as in the case of holding at a plurality of conventional points. This can be prevented.
Moreover, the thin workpiece W can be smoothly delivered from the first movable holding member 5 to the second movable holding member 7 in the same manner as the transfer device 1 of the first embodiment.

In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the main point of this invention, it can change suitably.
For example, although a floating type is adopted as the conveyance path 3 in the above embodiment, a belt conveyor type may be adopted.
In addition, the unwinding roll constituting the delivery unit 2 is continuously rotated at a constant speed, and the turn bar 11 absorbs the bending in the length direction, but the turn bar 11 is omitted and the unwinding roll is rotated intermittently. You may make it make it.

  Furthermore, when the thin workpiece W is relatively small and the width thereof is narrow, the pair of first movable holding member 5 and the first movable holding member 5 are not provided with a synchronization mechanism using a ball screw mechanism or a linear motor mechanism. May be connected to each other by a connecting member, and the pair of first movable holding member 5 and first movable holding member 5 may be moved together.

DESCRIPTION OF SYMBOLS 1 ... Conveyance apparatus, 2 ... Delivery part, 3 ... Conveyance path, 4 ... Fixed holding member, 5 ... 1st movable holding member, 6 ... Cutting apparatus, 7 ... 2nd movable holding member, 11 ... Turn bar, 20 ... Fixed holding Member, L1 ... Preset length, W ... Thin workpiece

Claims (3)

A transport device that transports a thin workpiece from a feed section and transports it on a transport path,
A pair of transports on the transport path while detachably holding both side end portions of the portion located on the transport section side from the front end by a preset length on the front end side of the thin workpiece sent on the transport path. A first movable holding member;
A pair of fixed holding members which are detachably held on both sides of the thin workpiece sent out on the conveyance path and which can be attached to and detached from the thin workpiece;
A cutting device for cutting the thin workpiece in the width direction between the first movable holding member and the fixed holding member;
On the leading end side of the thin workpiece that has been transported by the first movable holding member, both end portions on the leading end side of the portion held by the first movable holding member are detachably held and further transported on the transport path. A pair of second movable holding members,
The first movable holding member and the fixed holding member are provided with a tension applying mechanism for applying tension to the thin workpiece by pulling both end portions of the thin workpiece to the side. . A transport device that transports a thin workpiece from a feed section and transports it on a transport path,
A pair of transports on the transport path while detachably holding both side end portions of the portion located on the transport section side from the front end by a preset length on the front end side of the thin workpiece sent on the transport path. A first movable holding member;
A fixed holding member that holds the entire width direction of the thin workpiece sent out on the conveyance path on the side of the delivery portion and is capable of contacting and separating from the thin workpiece;
A cutting device for cutting the thin workpiece in the width direction between the first movable holding member and the fixed holding member;
On the leading end side of the thin workpiece that has been transported by the first movable holding member, both end portions on the leading end side of the portion held by the first movable holding member are detachably held and further transported on the transport path. A pair of second movable holding members,
The transport apparatus according to claim 1, wherein the first movable holding member is provided with a tension applying mechanism that applies tension to the thin workpiece by pulling both end portions of the thin workpiece laterally. The delivery part is formed by an unwinding roll for unwinding the thin workpiece,
The transport apparatus according to claim 1, further comprising a turn bar that is formed between the feed-out portion and the fixed holding member on the transport path and is movable toward the thin workpiece.

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