JP5541796B2 - Material transfer device - Google Patents

Description

  The present invention relates to a material conveying device that sequentially and intermittently feeds a plurality of long materials to a processing apparatus.

  As a conventional material conveying device, one material feeding time required from the start of feeding one material to the end of feeding is calculated, and the material is sequentially transferred to the processing device every time one material feeding time elapses. What is fed is known (see, for example, Patent Document 1).

JP-A-8-252740 (paragraphs [0010], [0011], FIG. 7)

  However, in the above-described conventional material conveyance device, when a material having a relatively large variation in length is used, there is a problem in that a processing position in the material varies and a defective product is generated. Specifically, for example, when a disc is punched out from a sheet metal with a processing device, the disc may reach the front end or the rear end of the sheet metal, and a half-missed disc may be punched out. For this reason, when a material having a relatively large variation in length is used, it is necessary to secure a large margin as a processed part at both ends of the material, and there is a problem that productivity is also reduced. .

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a material conveyance device capable of suppressing the influence of variation in material length and improving productivity.

In order to achieve the above object, a material conveying apparatus according to the invention of claim 1 is a material conveying apparatus that intermittently feeds a plurality of long materials to a processing apparatus in sequence, Provided with a material transfer mechanism that can transfer material by holding the material between the upstream side and the downstream side of the processing device along the supply path. The material is transferred by the upstream material transfer mechanism, and the material passes through the processing device. In the material transfer device that transfers materials from the upstream material transfer mechanism to the downstream material transfer mechanism, transfers the material by the downstream material transfer mechanism, and then discharges it, the front end of the material is the processing position of the processing device. The front end detecting means capable of detecting that the processing start position set between the downstream material transfer mechanism and the downstream material transfer mechanism and the rear end of the material are set between the processing position and the upstream material transfer mechanism. After it can be detected that it has passed the finished machining end position And a detection means, when the front end detecting means detects the arrival of the front end of the material, to initiate the processing pitch transfer for transferring each processing pitch defined material in advance, the trailing edge detection means of the rear end of the material When the passage is detected, the processing pitch transfer is finished and the material is discharged, and the subsequent material to be processed next to the material is transferred to the processing device, and upstream of the upstream material transfer device. It is possible to detect that the material supply device that can feed the material to the processing device and the rear end of the material have passed the pre-processing end position set between the processing end position and the upstream material transfer mechanism Pre-rear end detecting means, and the front end of the succeeding material includes a standby front end detecting means capable of detecting that the upstream material transfer mechanism has reached a standby position set within a range where the material can be sandwiched. The trailing edge detection means of the trailing edge of the material Upon detecting excessive, having characterized in that the waiting front detecting means material supply device until it detects the arrival of the front end of the succeeding material to deliver subsequent material.

Invention of claim 2 is the material conveying device of claim 1, the pre trailing end detecting means detects the passage of the trailing end of the material to the rear end detecting means detects the passage of the trailing edge of the material During this time, the upstream material transfer mechanism transfers the subsequent material so that the front end of the subsequent material is disposed at a processing preparation position that is separated from the processing end position by a predetermined distance upstream. Has characteristics.

According to a third aspect of the present invention, there is provided the material conveying apparatus according to the first or second aspect , wherein the front end of the material has reached a repositioning position set within a range in which the downstream material transfer mechanism can hold the material. The present invention is characterized in that it has a detectable changeover detection means, and when the changeover detection means detects the arrival of the front end of the material, the material is changed over from the upstream material transfer mechanism to the downstream material transfer mechanism.

According to a fourth aspect of the present invention, there is provided the material transfer apparatus according to any one of the first to third aspects, wherein the upstream and downstream material transfer mechanisms can be moved in the width direction of the material. And a slide transfer mechanism that reciprocates the material transfer mechanism in the width direction of the material, and the material transfer mechanism transfers the material by the machining pitch when the reciprocation is turned back.

[Invention of Claim 1]
In the material conveying apparatus according to the first aspect of the present invention, when the front end of the material reaches the processing start position, the material is transferred by a predetermined processing pitch. Then, when the rear end of the material passes the processing end position, the processing pitch transfer is ended and the material is discharged. As described above, according to the present invention, since the start and end of the processing pitch transfer is performed based on the positions of the front end and the rear end of the material, it is possible to increase the productivity by suppressing the influence of the variation in the material length. . In addition, according to the present invention, it is possible to shorten the time required to transfer the material before processing by a distance larger than the processing pitch and to send it to the processing apparatus, and it is more productive than when the material is always transferred by processing pitch. Can be improved. Moreover, it can respond to different material length for every kind of product, and can respond to multi-product production.

Further, in the present invention, when the rear end of the preceding material passes the pre-processing end position upstream from the processing end position, the standby position set within a range in which the upstream material transfer mechanism can sandwich the material. Feed subsequent material until. As described above, according to the present invention, the succeeding material is transferred to the standby position in advance before the trailing end of the preceding material passes through the processing end position, so that the trailing end of the preceding material passes through the processing end position. Then, the subsequent material can be quickly transferred toward the processing apparatus by the upstream material transfer mechanism.

[Invention of claim 2 ]
In the invention of claim 2 , the front end of the succeeding material is arranged at a processing preparation position separated by a predetermined distance upstream from the processing end position before the rear end of the preceding material passes the processing end position. . As a result, the interval between the preceding material and the succeeding material at the end of the processing can be reduced, and the interruption of the processing operation can be shortened or eliminated.

[Invention of claim 3 ]
In the invention of claim 3 , when the front end of the material reaches the holding position set in a range in which the material transfer mechanism on the downstream side can hold the material, the material transfer mechanism on the downstream side from the material transfer mechanism on the downstream side. Change the material. Thereby, the change of material can be performed reliably.

[Invention of claim 4 ]
According to the configuration of the invention of claim 4 , the material is reciprocated in the width direction, and transferred to the downstream side by the machining pitch when the reciprocation is turned back. As a result, the material can be processed in a zigzag shape, and the material can be used effectively.

Side view of material transport mechanism according to first embodiment Top view of strip material (A) Side view of material conveying apparatus when strip material reaches standby position, (B) Side view of material conveying apparatus when front end of material reaches processing start position (A) Side view of the material conveying device when the front end of the strip material reaches the holding position, (B) Side view of the material conveying device when the rear end of the strip material passes the pre-processing end position (A) After the rear end of the strip material has passed the pre-processing end position, the side view of the material conveying device in a state where the first cycle has ended, (B) After the rear end of the strip material has passed the pre-processing end position, Side view of material transport device in a state where the second cycle has been completed (A) Side view of material conveying apparatus when rear end of strip material passes processing end position, (B) Side view of material conveying apparatus when front end of strip material reaches processing start position Enlarged side view of the material transport device when the front end of the strip is placed at the processing preparation position Side view of material conveying apparatus according to second embodiment Top view of strip material Plan view of preceding and subsequent strips Side view of material conveying apparatus according to modification Side view of material conveying apparatus according to modification

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a strip material 90 (corresponding to the “long material” of the present invention) that is a processing target of the present embodiment. The strip material 90 is formed by cutting a sheet metal into a strip shape. In the present embodiment, a disk-shaped die cutting is performed along the longitudinal direction of the strip material 90 by the processing apparatus indicated by reference numeral 11 in FIG.

  The processing apparatus 11 has a punch 13 and a processing stage 14 arranged vertically, and the punch 13 can reciprocate up and down. A die 14 </ b> A (see FIG. 3) is provided at a position facing the punch 13 in the processing stage 14. When the punch 13 moves up and down, the strip material 90 disposed on the processing stage 14 is die-cut by the punch 13 and the die 14A. In the processing apparatus 11, the position where the punch 13 is disposed corresponds to the processing position P7 according to the present invention.

  The material conveying apparatus 10 for feeding the strip 90 to the processing apparatus 11 includes an upstream gripper feed 20 and a downstream gripper feed 30 symmetrically with the processing apparatus 11 in between. The upstream gripper feed 20 corresponds to the “upstream material transfer mechanism” of the present invention, and the downstream gripper feed 30 corresponds to the “downstream material transfer mechanism” of the present invention.

  The upstream gripper feed 20 and the downstream gripper feed 30 include fixed grippers 21 and 31 near the processing device 11, and movable grippers 22 and 32 on the side farther from the processing device 11 than the fixed grippers 21 and 31. . The fixed grippers 21 and 31 are immovable in the conveying direction of the strip material 90. The movable grippers 22 and 32 can be reciprocated along the conveying direction of the strip 90 (lateral direction in FIG. 1) by a ball screw mechanism. The fixed grippers 21 and 31 and the movable grippers 22 and 32 are provided with a pair of sandwiching blocks facing each other in the vertical direction, and can be changed between a clamped state in which the sandwiched blocks are brought close to each other and an unclamped state in which they are separated from each other. (See FIG. 3).

  Further, as shown in FIG. 1, a material supply device 15 capable of feeding a strip 90 to the upstream gripper feed 20 is provided on the upstream side of the upstream gripper feed 20.

  As shown in FIG. 3, the material conveyance device 10 includes edge sensors S <b> 1 to S <b> 3 in order from the upstream side along the feeding path of the strip material 90. Among these, the edge sensor S1 is disposed at an intermediate position in a range in which the movable gripper 22 of the upstream gripper feed 20 can move in the material transport direction. The edge sensor S2 is disposed between the die 14A of the processing stage 14 and the fixed gripper 31. The edge sensor S3 is disposed at a position within a range in which the movable gripper 32 of the downstream gripper feed 30 can move in the material conveyance direction. Further, the positions where the edge sensors S1, S2, S3 are arranged in the material conveying direction are a standby position P1, a machining start position P2, and a holding position P3 according to the present invention, respectively. The edge sensors S1, S2, S3 can detect that the front end of the strip 90 has reached the standby position P1, the processing start position P2, and the holding position P3, respectively.

  Further, the material conveying apparatus 10 includes edge sensors S4 and S5 along the feeding path of the strip material 90. The edge sensor S4 is disposed between the stationary gripper 21 of the upstream gripper feed 20 and the processing stage 14. The edge sensor S5 is disposed between the die 14A of the processing stage 14 and the edge sensor S4. In addition, the positions where the edge sensors S4 and S5 are arranged in the material conveying direction are the pre-processing end position P4 and the processing end position P5 according to the present invention, respectively. The edge sensors S4 and S5 can detect that the rear end of the strip 90 has passed through the pre-processing end position P4 and the processing end position P5, respectively. Here, the edge sensor S1 is “standby front end detection means”, the edge sensor S2 is “front end detection means”, the edge sensor S3 is “holding detection means”, the edge sensor S4 is “previous rear end detection means”, the edge sensor S5 corresponds to “rear end detection means”.

  This completes the description of the configuration of the material conveyance device 10 according to the present embodiment. Next, the operation of the material conveying apparatus 10 will be described by taking as an example the case of performing a single die cutting process on the strip material 90. When the strip material 90 is placed on the material supply device 15, the rear end of the strip material 90 is pushed by the material supply device 15. When the front end of the strip 90 reaches the standby position P1, the edge sensor S1 detects the front end of the strip 90 and sends a signal to the material supply device 15 to stop the transport of the strip 90. Thus, the strip material 90 is positioned at the standby position P1 (see FIG. 3A).

  At this time, the movable gripper 22 of the upstream gripper feed 20 is disposed on the most upstream side of the movable range, and is clamped to sandwich the strip material 90. On the other hand, the fixed gripper 21 is in an unclamped state. Further, the fixed gripper 31 and the movable gripper 32 of the downstream gripper feed 30 are both in an unclamped state.

  Next, the movable gripper 22 of the upstream gripper feed 20 moves forward to the front end of the movable range while holding the strip 90. If the front end of the strip 90 does not reach the processing start position P2 by only one advance, the fixed gripper 21 holds the strip 90, the movable gripper 22 is in an unclamped state, and is retracted by a predetermined pitch. Then, after the movable gripper 22 sandwiches the strip 90 again and the fixed gripper 21 is in an unclamped state, the operation of moving forward is repeated. When the front end of the strip 90 reaches the processing start position P2 and the arrival is detected by the edge sensor S2, the fixed gripper 21 of the upstream gripper feed 20 sandwiches the strip 90, and the movable gripper 22 It enters an unclamped state and moves backward by the machining pitch L1. Then, when the fixed gripper 21 sandwiches the strip material 90, the punch 13 of the processing apparatus 11 moves up and down, and the punch material 13 and the die 14A perform the first die cutting process on the strip material 90 (FIG. 3B). reference). Hereinafter, an operation until the strip material 90 is transferred by the processing pitch L1 and die-cut is referred to as one cycle.

  In the next cycle, the movable gripper 22 of the upstream gripper feed 20 is clamped to sandwich the strip 90, the fixed gripper 21 is unclamped, and the movable gripper 22 advances by the machining pitch L1. Then, the fixed gripper 21 is clamped to sandwich the strip 90, and the movable gripper 22 is unclamped to move backward by the machining pitch L1. At this time, the punch 13 of the processing apparatus 11 moves up and down to perform die cutting on the strip material 90. That is, the strip material 90 is subjected to a second die cutting process at a position separated from the position of the first die cutting process by the processing pitch L1. By repeating these operations, the strip material 90 is subjected to die cutting for each processing pitch L1.

  As shown in FIG. 4A, when the strip material 90 is transferred by the processing pitch L1, the front end of the strip material 90 reaches the holding position P3, and the arrival is detected by the edge sensor S3. In the next cycle after the edge sensor S3 detects the arrival of the front end of the strip 90, the movable gripper 32 of the downstream gripper feed 30 is clamped to sandwich the strip 90, and the upstream gripper feed 20 is fixed. The gripper 21 is in an unclamped state. When the movable gripper 32 of the downstream gripper feed 30 moves forward by the machining pitch L1 and the fixed gripper 31 is clamped to sandwich the strip 90, the movable gripper 32 of the downstream gripper feed 30 is unclamped. Then, the workpiece moves backward by the machining pitch L1. At this time, the punch 13 of the processing apparatus 11 moves up and down, and the strip material 90 is subjected to die cutting.

  Next, when the strip material 90 is transferred by the processing grip L1 by the downstream gripper feed 30, the rear end of the strip material 90 passes the pre-processing end position P4, and the passage is detected by the edge sensor S4. Then, the movable gripper 22 of the upstream gripper feed 20 moves back to the rear end of the movable range and stands by (see FIG. 4B).

  Here, the number of times the strip material 90 is processed after the edge sensor S4 detects the passage of the rear end of the strip material 90 is a preset number of times (for example, 3 times). Specifically, the distance from the pre-processing end position P4 to the die 14A of the processing stage 14 is not less than 3 times and less than 4 times the processing pitch L1, so that the fourth processing cannot be performed.

  As shown in FIG. 5 (A), after the edge sensor S4 detects the trailing edge of the strip material 90, the strip in which the material supply device 15 is processed next to the strip material 90 while the first cycle is performed. The material 90 is fed to the upstream gripper feed. Then, when the front end of the strip 90 reaches the standby position P1, the arrival is detected by the edge sensor S1, and the material supply device 15 stops the transfer. Then, the movable gripper 22 of the upstream gripper feed 20 is in a clamped state, and the strip material 90 is clamped. As a result, the strip 90 is positioned at the standby position P1.

  As shown in FIG. 5B, after the edge sensor S4 detects the trailing edge of the strip 90, the movable gripper 22 of the upstream gripper feed 20 is moved to the subsequent strip 90 after the second cycle. The front end of the subsequent strip 90 is brought close to the vicinity of the rear end of the preceding strip 90, and then the fixed gripper 21 is clamped to sandwich the subsequent strip 90. The movable gripper 22 is in an unclamped state and retracted by the machining pitch L1. Here, the front end of the subsequent strip 90 is disposed at a processing preparation position P6 that is separated from the processing end position P5 by a predetermined distance L2 set upstream in advance (see FIG. 7).

  While the edge sensor S4 detects the rear end of the strip 90, the preceding and succeeding strips 90 are maintained while maintaining the distance between the rear end of the preceding strip 90 and the front end of the subsequent strip 90. The strip material 90 and the subsequent strip material 90 are transferred synchronously, and the cycle is repeated. When the movable gripper 32 of the downstream gripper feed 30 advances by the processing pitch L1 and the rear end of the strip 90 passes the processing end position P5, the passage is detected by the edge sensor S5 (FIG. 6A). )reference).

  In the next cycle after the edge sensor S5 detects the passage of the rear end of the strip 90, the movable gripper 32 of the downstream gripper feed 30 is clamped to sandwich the strip 90, and the fixed gripper 31 is unclamped. The strip 90 is discharged by the transfer of the movable gripper 32. At this time, in the upstream gripper feed 20, the movable gripper 22 is clamped to sandwich the strip 90 and the fixed gripper 21 is unclamped. Then, similarly to the transfer of the strip material 90 shown in FIGS. 3A to 3B, the movable gripper 22 transfers the strip material 90 until it reaches the processing start position P2 (see FIG. 6B). ). Next, the operation from FIG. 3B to FIG. 6B is repeated, and the strip material 90 is intermittently fed to the processing apparatus 11.

  This completes the description of the operation of the material conveyance device 10 of the present embodiment. Next, the effect of the material conveyance apparatus 10 is demonstrated. In the material conveyance device 10 of the present embodiment, the upstream gripper feed 20 transfers the strip material 90 toward the processing device 11, and when the front end of the strip material 90 reaches the processing start position P2, the strip material 90 is processed by the processing pitch L1. The die-cutting process is started by transferring them one by one. When the front end of the strip material 90 reaches the changeover position P <b> 3, the strip material 90 is changed over from the upstream gripper feed 20 to the downstream gripper feed 30. When the rear end of the strip 90 passes the pre-processing end position P4, the subsequent strip 90 is fed to the upstream gripper feed 20 in the next cycle, and the front end of the subsequent strip 90 is in the standby position. Positioned at P1. Next, the preceding strip material 90 is transferred by the downstream gripper feed 30 and at the same time, the upstream gripper feed 20 brings the front end of the succeeding strip material 90 close to the vicinity of the rear end of the preceding strip material 90 and then the preceding strip material. The sheet 90 is transferred synchronously while maintaining the distance between the rear end of 90 and the front end of the subsequent strip 90. When the rear end of the strip 90 passes through the processing end position P5, the downstream gripper feed 30 discharges the strip 90. At this time, the upstream gripper feed 20 transfers the strip 90 until the front end of the strip 90 reaches the processing start position P2. In addition, the upstream gripper feed 20 and the downstream gripper feed 30 are set so that the strip materials 90 and 90 that are transported move at high speed synchronously so that they do not collide with each other, and time loss does not occur. Then, the above operation is repeated, and the processing device 11 processes the strip material 90 at a plurality of positions while sequentially replacing the strip material 90.

  As described above, in the material conveying apparatus 10 according to the present embodiment, the processing pitch transfer is started and ended based on the positions of the front end and the rear end of the strip material 90, and therefore, the influence of the variation in the length of the strip material 90 is affected. Can suppress productivity and increase productivity. In addition, it is possible to shorten the time required for transferring the strip material 90 before processing by a distance larger than the processing pitch L1 and feeding it to the processing apparatus 11, which is more produced than when the strip material 90 is always transferred by the processing pitch L1. It is possible to improve the performance. Moreover, it can respond to different material length for every kind of product, and can respond to multi-product production.

  Moreover, in the material conveying apparatus 10, since the strip material 90 is previously transferred to the standby position P1 before the rear end of the strip material 90 passes through the processing end position P5, the rear end of the strip material 90 is at the processing end position P5. The strip material 90 can be quickly transferred toward the processing apparatus 11 by the upstream gripper feed 20 when the sheet passes. In addition, the front end of the strip 90 is disposed at a processing preparation position that is separated by a predetermined distance L2 from the processing end position P5 until the rear end of the strip 90 passes the processing end position P5. The interval between the strip material 90 and the subsequent strip material 90 at the time can be reduced so that the interruption of the processing operation can be shortened or eliminated. Furthermore, when the front end of the strip material 90 reaches the holding position P3 set within a range in which the downstream gripper feed 30 can sandwich the strip material 90, the strip material is transferred from the upstream gripper feed 20 to the downstream gripper feed 30. Since 90 is changed, it is possible to reliably change the strip material 90.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the strip material 90V to be processed is wider than the strip material 90 of the first embodiment, and the processing device 11 performs die cutting in a zigzag shape along the longitudinal direction of the strip material 90V. (See FIG. 9). FIG. 8 shows a material conveying apparatus 10V for that purpose.

  The material conveying apparatus 10V includes a slide moving mechanism 50 capable of moving the upstream gripper feed 20 and the downstream gripper feed 30 in the width direction of the strip material 90V feeding path (direction perpendicular to the paper surface in FIG. 8), The point provided with 50 is different from the first embodiment. Specifically, the slide movement mechanisms 50 and 50 are arranged symmetrically across the processing apparatus 11, and each slide movement mechanism 50 includes a fixed base 40 fixed to the processing apparatus 11 and a straight line provided on the fixed base 40. A movable base 41 that is movable along the movement guide 40A is provided. The movable bases 41 and 41 move integrally by controlling the ball screw mechanism provided in the fixed bases 40 and 40 in synchronization. An upstream gripper feed 20 and a downstream gripper feed 30 are attached to the movable bases 41 and 41.

  The material supply device 15 of the material conveying device 10V sends the strip material 90V to the upstream gripper feed 20 with one end in the width direction of the strip material 90V positioned on the reference line K1 set for the upstream gripper feed. To pay. Thus, one end in the width direction of the strip 90V that has reached the initial position P1 is arranged on the reference line K1 in the movable base 41 (see FIG. 9). About another structure, it is the same as the material conveying apparatus 10 of 1st Embodiment.

  Next, the operation of the material conveying apparatus 10V will be described. In the material conveying apparatus 10V, the front end of the strip material 90V reaches the processing start position P2, and the first die cutting process is performed. As a result, a die cut mark 92A is formed on one end side of the front end of the strip material 90V (see FIG. 9A). Subsequently, the movable base 41 is pitch-fed to one end side (lower side in FIG. 9) by a preset width machining pitch L3, and the width machining pitch transfer of the strip material 90V is executed, and the second die cutting process is performed. Is performed (see FIG. 9B). Hereinafter, an operation until the movable base 41 is pitched in the width direction of the strip material 90V and the strip material 90V is die-cut is referred to as one cycle.

  In the next cycle, the movable base 41 moves to one end side by the width machining pitch L3. Then, when the pitch is fed by a preset number of forward feeds (for example, 3 times) for each width processing pitch, the first row of four pieces from the die trace 92A to the die trace 92B is formed at the front end of the strip 90V. A die-cut trace is formed (see FIG. 9C).

  In the next cycle, the movable base 41 slides back to the other end side (upper side in FIG. 9) by half of the width machining pitch L3. At this time, the upstream gripper feed 20 transfers the strip material 90V by the processing pitch L4. When the strip material 90V is subjected to die cutting, a die trace 93A is formed in a portion located obliquely rearward from the die cut trace 92B located on the other end side of the first row of die cut traces. (See FIG. 9C). Next, the movable base 41 is pitch-fed by the preset number of reverse feeds (for example, twice) by the width machining pitch L3 toward the other end side. As a result, a second row of die extraction traces consisting of three from the die extraction trace 93A to the die extraction trace 93B is formed in the width direction of the strip 90V (see FIG. 9D).

  In the next cycle, the movable base 41 slides to the other end side by half of the width machining pitch L3. At this time, the upstream gripper feed 20 transfers the strip material 90V by the processing pitch L4. When the strip material 90V is subjected to die cutting, a die cutting trace 94A is formed in a portion located obliquely rearward from the die cutting trace 93B located on the most end side in the second row of die cutting traces. (See FIG. 9D).

  Next, the above-described operation is repeated, and the strip material 90V is subjected to die-cutting processing, and die-cut traces are sequentially formed. When the rear end of the strip material 90V reaches the processing end position P5, a stamp mark 95A is formed on one end side of the final row of the strip material 90V (see FIG. 10A). When the last die cutting process on the strip material 90V is completed and the die trace 95B is formed, the strip material 90V is discharged downstream, and the subsequent strip material 90V transferred by the upstream gripper feed 20 The front end reaches the processing start position P2, and the first die cutting is performed on the strip material 90V. During this time, the movable base 41 does not slide. Therefore, as shown in FIG. 10 (A), when the stamping trace 95B on the other end side (the upper side in FIG. 10 (A)) of the final row of the strip material 90V is formed last, In the succeeding strip material 90V, a first punching trace 96A is formed on the other end side of the front end portion (see FIG. 10B).

  In the next cycle, the movable base 41 is moved to the other end side by the width machining pitch L3, and the second die cutting of the strip material 90V is performed. Then, the above operation is repeated, and die cutting is performed while exchanging the strip material from the preceding strip material 90V to the subsequent strip material 90V.

  Thus, according to the material conveying apparatus 10V of the present embodiment, the strip material 90V is reciprocated in the width direction, and transferred to the downstream side by the processing pitch L4 when the reciprocating motion is turned back. Thereby, it becomes possible to process the strip material 90V in a zigzag shape, and the strip material 90V can be used effectively.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) In the first embodiment, the upstream gripper feed 20 and the downstream gripper feed 30 are used as the “material transfer mechanism” according to the present invention. However, as shown in FIG. Conveying rollers 100 and 100 that sandwich the material 90 may be used. In this configuration, when the front end of the strip 90 reaches the rear end of the downstream transport roller 100, the downstream transport roller 100 automatically sandwiches the strip 90.

  (2) Moreover, as shown in FIG. 12, clamps 101 and 101 that can be transferred while holding the strip 90 may be used. In this configuration, each clamp 101 moves downstream by a processing pitch L1 while holding the strip material 90, and the processing pitch of the strip material 90 is transferred.

  (3) Although the processing apparatus 11 of the above embodiment has a configuration for punching the strip material 90, the processing device 11 may have a configuration for punching the strip material 90 or a configuration for laser processing.

  (4) In the above embodiment, the strip material 90, 90V formed by cutting a sheet metal is shown as the material of the present invention. However, a block-shaped material that is elongated in one direction may be used. A cylindrical material may be used.

DESCRIPTION OF SYMBOLS 10 Material conveyance apparatus 11 Processing apparatus 15 Material supply apparatus 20 Upstream side gripper feed (material transfer mechanism)
30 Downstream gripper feed (material transfer mechanism)
50 Slide moving mechanism 90, 90V Strip material (material)
100 Conveyance roller (material transfer mechanism)
101 Clamp (Material transfer mechanism)
K1 Reference line L1, L4 Machining pitch L2 Predetermined distance L3 Width machining pitch P1 Standby position P2 Machining start position P3 Holding position P4 Pre-machining end position P5 Machining end position P6 Machining preparation position P7 Machining position S1 Edge sensor (standby front end detection means)
S2 Edge sensor (front end detection means)
S3 Edge sensor (Changing detection means)
S4 Edge sensor (previous trailing edge detection means)
S5 Edge sensor (rear end detection means)

Claims (4)

A material conveying apparatus that intermittently feeds a plurality of long materials to a machining position of a machining apparatus sequentially, and is arranged upstream and downstream of the machining apparatus along the material feeding path. A material transfer mechanism capable of sandwiching and transferring the material, transferring the material by the material transfer mechanism on the upstream side, and downstream from the material transfer mechanism on the upstream side while the material passes through the processing apparatus; In the material transfer device that changes the material to the material transfer mechanism, transfers the material in the material transfer mechanism on the downstream side, and then discharges the material.
A front end of the material, the front end detecting hand stage capable of detecting the arrival of the set machining start positions between the material transfer mechanism of the processing position and the downstream side,
The rear end of the material, and a detectable trailing edge detect hand stage that was passed through a machining end position between the material transfer mechanism of the processing position and the upstream side,
When the front end detecting means detects the arrival of the front end of the material, it starts processing pitch transfer for transferring the material by a predetermined processing pitch,
When the trailing edge detection means detects the passage of the trailing edge of the material, the processing pitch transfer is finished and the material is discharged, and the subsequent material to be processed next to the material is transferred to the processing device. Transported to
A material supply device disposed upstream of the material transfer mechanism on the upstream side and capable of feeding the material toward the material transfer mechanism on the upstream side;
Pre-rear end detecting means capable of detecting that the rear end of the material has passed a pre-processing end position set between the processing end position and the upstream material transfer mechanism;
Standby front end detecting means capable of detecting that the front end of the subsequent material has reached a standby position set within a range in which the material transfer mechanism on the upstream side can hold the material;
When the prior trailing edge detection means detects the passage of the trailing edge of the material, the material supply device feeds the subsequent material until the standby leading edge detection means detects the arrival of the leading edge of the succeeding material. A material conveying device characterized by: After the prior trailing edge detection means detects the passage of the trailing edge of the material and before the trailing edge detection means detects the passage of the trailing edge of the material, the leading edge of the subsequent material is finished processing. 2. The material according to claim 1, wherein the material transfer mechanism on the upstream side transfers the subsequent material so as to be arranged at a processing preparation position that is separated from the position by a predetermined distance set upstream in advance. Conveying device. The front end of the material comprises a change detection means capable of detecting that the material transfer mechanism on the downstream side has reached a change position set within a range in which the material can be held,
3. The material according to claim 1, wherein, when the change detection unit detects the arrival of the front end of the material, the material is changed from the upstream material transfer mechanism to the downstream material transfer mechanism. Material transport device. A slide moving mechanism capable of moving the material transfer mechanism on the upstream side and the downstream side in the width direction of the material;
The slide movement mechanism causes the material transfer mechanism to reciprocate in the width direction of the material, and the material transfer mechanism transfers the material by the machining pitch when the reciprocation is turned back. The material conveyance apparatus of any one of Claims 1 thru | or 3.

Images