JPH04104214U - Front table in folding machine - Google Patents

Abstract

(57) [Summary] [Purpose] When the workpiece is positioned with respect to the bending line along the pass line on the front table, the side gauge for positioning in the left and right direction is brought into flat contact with the workpiece without bending. In addition, the purpose is to prevent interference with the pusher roller when the work is reversely fed and brought into contact with the pin gauge for longitudinal positioning. [Structure] A reference side stretch 35 and a pusher side stretch 55 are provided so as to be slidable in the left and right direction, and a plurality of pusher rollers 67 are grouped into appropriate numbers.
In addition, the pin gauge 83 is rotatably supported by a linear slide 57 that is individually provided to be slidable in the left and right direction on the pusher side stretch 55 via a spring 65 biased in the direction of the side gauge 25. It has a structure in which it is provided so as to be freely retractable above and below P, and is supported by a slider 93 that is slidable in the front and back direction.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea involves transporting a plate-shaped workpiece onto the pass line, using side gauges and pin gauges. Freon in a bending machine that uses a gauge to position the bending machine against the bending line. Regarding tables.

0002

[Conventional technology]

Conventionally, a plate-shaped workpiece was positioned on the front table of a bending machine with respect to the bending line. When performing a measurement, first check the multiple reference sides arranged in the front and back direction on either the left or right side. The roller is guided by the LM guide and moved in the left and right direction by the feed screw and feed nut. It is supported rotatably around an axis perpendicularly to a freely movable reference side stretch. A side gauge was used to determine the horizontal reference of the workpiece.

0003 Then, press the workpiece against the reference side roller of the side gauge to determine the position in the left and right direction. There are multiple pushers arranged in the front and back direction on the other side of the side gauge. - The roller is guided by the LM guide and is connected by the feed screw and feed nut or cylinder. The stretch on the pusher side, which is movable in the left and right directions, is A pusher configured to be rotatably supported was used.

0004 Also, for positioning in the front and back direction, first move the end of the workpiece to the appropriate size from the bending line of the bending machine. After projecting only The pin gauges installed above and below the input are protruded, and the workpiece is transported. This was done by returning it in the opposite direction to the feeding direction and bringing it into contact with the pin gauge.

[0005]

[Problem that the idea aims to solve]

By the way, when positioning the workpiece in the left and right direction using the above-mentioned conventional technology, , the left and right sides of the workpiece are not parallel, or the length of the workpiece in the front and back direction is short. Do not place it toward the rear of the row of reference rollers or pusher rollers (closer to the bending machine). If the workpiece is not on the axial center line of the feed screw on the plane, the LM guide or Shakiness due to the feed screw gap, stretching on the reference side and stretching on the pusher side Due to the bending of A phenomenon occurs in which the contact side of the workpiece does not contact the row of reference side rollers evenly.

[0006] If this happens, the side gauge will no longer function properly, and the bending position of the product will be The problem arises that the positioning becomes unstable and inaccurate.

[0007] Also, in order to position the workpiece in the front and back direction, the workpiece is moved backwards and forwards. When trying to contact the pin gauge, the reference side roller and push pin may If the row of shear rollers is not parallel and is recessed forward, the workpiece that is moving backwards will A phenomenon occurs in which the roller gets caught by the roller that is about to come into contact with it. If this happens, the front end of the workpiece will not be able to contact the pin gauge, so the A problem arises in that positioning becomes impossible.

[0008] The purpose of this invention is to improve the position of the reference roller of the side gauge in order to improve the above problems. The positioning will not go out of order, and the workpiece will not be able to be positioned in the front-rear direction. An object of the present invention is to provide a front table for a folding machine.

[0009]

[Means to solve the problem]

In order to achieve the above purpose, this idea carries a plate-shaped work onto the pass line. , a front table in a folding machine that performs positioning with respect to the bending line of the folding machine The front table is arranged in the front and back direction on either the left or right side as a reference. A plurality of reference side rollers arranged in a row and rotatably supported around a vertical axis; supporting the reference side rollers of the A side gauge consisting of a reference side stretch movably installed on the The workpiece is placed in the front-rear direction for positioning by pressing the workpiece against the board gauge. A plurality of rows of pusher rollers and these pusher rollers are connected to the side gate. It is supported rotatably around a vertical axis via an elastic body that is constantly biased in the direction of the Pusher side stretch that can be freely moved left and right with respect to the frame. a pusher that is retractable for positioning the workpiece in the front-rear direction; It also has a pin gauge that can freely move back and forth.

0010 Further, the plurality of pusher rollers are grouped into appropriate numbers and Support the pusher rollers for each group, and The structure includes an appropriate number of slide members that are movable in the right direction. or, alternatively, to a suitable pusher roller among the plurality of pusher rollers. A roller cylinder is provided on the side gauge side for the pusher side stretch. The pusher side stretch is connected to the frame. The structure is such that it is slightly movable in the left and right directions with respect to the arm.

[0011]

[Effect]

By adopting the front table of the folding machine of this invention, it is possible to Move the semi-side stretch to adjust the horizontal position of multiple reference roller rows to match the workpiece width. They are also adjusted slightly apart. At the same time, the pusher side stretch is also moved to The distance between the pusher roller row and the roller row on the reference side of the piece is sufficiently wider than the workpiece width. adjusted to the position.

0012 Next, the workpiece is carried onto the pass line of the front table and is placed on the said size. When it reaches the dog gauge area, it is transported along the row of reference side rollers, and the rear end The bending machine is stopped after passing the bending line by an appropriate distance.

[0013] Therefore, in order to ensure the horizontal positioning of the workpiece, first stretch the reference side. After moving the workpiece and pushing it towards the center for accurate positioning, the pusher The side stretch is moved towards the side gauge. After that, there are two ways to operate Divided.

[0014] One is that after the pusher roller is stopped just short of the workpiece, Only the slide member that supports the pusher roller in the region from the rear end to the front end is If you move it to the side gauge side and press the pusher roller against the side of the workpiece, The workpiece is brought into flat contact with the side gauge by the weak force of the elastic body.

[0015] The other is that the biasing force of the elastic body is reduced after the pusher roller row contacts the workpiece. It will be stopped at a convenient place. Therefore, the workpiece is completely flattened by the weak urging force of the elastic body. Furthermore, it is pressed against the reference side roller. Next, the row of pusher rollers will work. The roller sheath in the area from the rear edge to the front edge of the workpiece is By actuating only the cylinder, the pusher associated with this roller cylinder The workpiece is pressed by the roller alone in the direction of the reference side roller via the elastic body.

[0016] In any of the above operations, the workpiece is pressed against the reference roller by the weak urging force of the elastic body. Because the side gauges are not bent and deviate from their original positions, the workpiece can be The rack is reliably positioned in the left and right direction.

[0017] Next, the workpiece is fed backwards forward, and the front side is brought into contact with the protruding pin gauge. Even when positioning in the backward direction, the pusher roller is pulled toward the front end of the workpiece during reverse feeding. It will not hang and become unable to contact the pin gauge.

[0018]

【Example】

Embodiments of this invention will be described below based on the accompanying drawings.

[0019] First, regarding the first embodiment, in FIGS. 1 and 2, the front table 1 is It is placed in front of the folding machine 3 (on the left in Figures 1 and 2), and is carried in from the front. The incoming plate-shaped work W is moved backward along the pass line P on the roller conveyor 5. While transporting the workpiece W to the bending machine 3, positioning of the workpiece W with respect to the bending line B of the bending machine 3 is performed. The role is to carry out the work.

[0020] That is, of the frame 7 of the front table 1 assembled on the floor, the left and right The upper frames 7a and 7b are arranged in the front-rear direction and extend in the left-right direction. Both ends of a roller shaft 9a of a plurality of pipe rollers 9 are rotatably supported.

[0021] Among these pipe rollers 9, the one at the front is an exception, and the adjacent pipe roller 9 A belt is wound around the pipe rollers 9 and power is transmitted, but the belt is wound around the pipe rollers 9. A sprocket 11 is attached to each outer end of the roller shaft 9a.

[0022] These sprockets 11 are engaged with separate left and right chains 13a and 13b. There is. These left and right chains 13a, 13b are installed at appropriate locations. The endless drive including the plurality of idlers 15 and the drive sprocket 15a at the front end It is wrapped around the

[0023] The left and right drive sprockets 15a are connected by a drive shaft 17, and This drive shaft 17 is fixed to the frame 7 via a sprocket and chain 19. The drive motor 21 is connected to the drive motor 21 .

[0024] As an exception to this, there are A permanent magnetic roller 23 is incorporated. And the parts numbered 7a to 23 above. A roller conveyor 5 is constructed.

[0025] With the above configuration, when the drive motor 21 rotates in the normal direction, the power is transferred to the chain 19 and the drive shaft. 17, Since it is transmitted to the drive sprocket 15a and the idler 15, the left and right chains The pins 13a and 13b start rotating at the same time. and the sprocket that engaged these 11, the pipe roller 9 is rotated in the forward direction via the roller shaft 9a.

[0026] At this time, when the work W is placed on the roller conveyor 5, the work W is placed on the pass line P. The top is conveyed forward in three directions from the front to the rear of the folding machine. Also, reverse the drive motor 21 At the same time, the pipe roller 9 rotates in the opposite direction, so the workpiece W is rotated from behind. It moves backwards towards you.

[0027] As will be described later, when positioning the workpiece W in the front-rear direction, the workpiece W is bent. There are times when the pipe roller 9 is reversed near the machine 3 and the machine is moved backwards. It is easy for slippage to occur between the track W and the pipe roller 9, resulting in damage to each other. However, as mentioned above, there is a permanent Since the magnetic roller 23 is incorporated, slippage between the workpiece and the workpiece W is prevented. They will not hurt each other.

[0028] Next, the side gauge 25 will be explained with reference to FIGS. 1 and 2. first frame 7 Above the right half of the horizontal frame 29 provided toward the rear on the intermediate frame 27 of LM guides (linear -Motion guide) 33 is slidably guided in the left and right direction. , a reference side stretch 35 is fixed on these LM guides 33.

[0029] At the left end of this reference side stretch 35, a plurality of pieces (in this implementation In the example, 8 reference side rollers 37 are arranged in the front and back direction, and these reference side rollers 37 are arranged in the front and back direction. The upper end of the roller 37 is connected to the pass line on the roller conveyor 5 as shown in FIG. It is provided at a position that projects above the ring P.

[0030] On the other hand, a feed nut 39 is fixed to the center of the lower surface of the reference side stretch 35. A feed screw 41 extending in the left-right direction is engaged. This feed screw 41 is Both ends are rotatably supported by bearings provided on the horizontal frame 29.

[0031] On the other hand, a pulley 43 is attached to the right end of the feed screw 41, as shown in FIG. The drive shaft of the servo motor 45 is attached to the horizontal frame 29 so that the A timing belt 47 is wound between the attached pulley and the pulley 43. It's being passed around.

[0032] With the above configuration, when the servo motor 45 is controlled and driven by the NC device, the Movement is via a timing belt 47, pulley 43, feed screw 41, and feed nut 39. and is transmitted to the reference side stretch 35.

[0033] Then, the reference side stretch 35 is guided by the LM guide 33 and rail 31 and moved to the left. Since it moves rightward, the row of reference rollers 37 is stopped at a desired position. Therefore, accurate positioning of the side gauge 25 is performed.

[0034] Next, the workpiece W is pressed against the side gauge 25 to position it. The pusher 49 will be explained based on FIGS. 1, 2, 3, and 4.

[0035] First, two rails extending in the left-right direction are placed on the left half of the horizontal frame 29. The LM guides 53 are arranged on top of the LM guides 51 so as to be slidably guided in the left and right direction. , and the pusher side stretch 55 is fixed on those LM guides 53. It is.

[0036] At the right end of this pusher side stretch 55, an appropriate number ( In this embodiment, two slide members 57 are provided that are movable in the left and right directions. and is driven by a cylinder 59 supported by the pusher side stretch 55. It looks like this.

[0037] At the tip of the slide member 57, as shown in FIG. Two holder cases 61 are arranged and fixed in the front-rear direction.

[0038] Inside this holder case 61, a roller holder 63 is slidable in the left and right direction. The spring (elastic body) 65 always moves the right direction (left direction in Fig. energized. The tip of the roller holder 63 is rotatably supported on a vertical axis. A pusher roller 67 is provided. On this pusher roller 67 The end is above the pass line P of the roller conveyor 5 similarly to the reference side roller 37. It is located in such a position that it protrudes from the top.

[0039] Note that the L-shaped bracket fixed to the tip of the holder case 61 has a proximity sensor. A sensor 69 is provided so as to hang down. Also, the holder case above the spring 65 A proximity sensor 71 is attached to the tip of the cover 61 .

[0040] On the other hand, a feed nut 73 is fixed to the center of the lower surface of the pusher side stretch 55. and is engaged with a feed screw 75 extending in the left-right direction. This feed screw 7 5 is rotatably supported at both ends by bearings provided on the horizontal frame 29.

[0041] A pulley 77 is attached to the left end of the other feed screw 75, and a pulley 77 is attached to the left end of the other feed screw 75. It is attached to the drive shaft of the gear motor 79 with a brake attached to the gear motor 29 hanging down. A timing belt 81 is wound between the pulley 77 and the pulley 77. Ru.

[0042] With the above configuration, when the gear motor 79 is rotated, its movement is based on timing. The pusher side strut is It is transmitted to the wrench 55.

[0043] Then, the pusher side stretch 55 is guided by the LM guide 53 and the rail 51. The row of pusher rollers 67 suddenly stops at the desired position. It is possible to

[0044] Furthermore, the cylinder 59 attached near the right end of the pusher side stretch 55 and Regarding the operation of the parts on the slide member 57, the positioning operation of the workpiece W is performed. Although this will be described later, it will only be stated here that the cylinder 59 is always in a contracted state. Save it.

[0045] Next, in FIG. 2, the front of the workpiece W is placed in the gap between the left and right frames 7a and 7b. A device for operating a pin gauge 83 for rearward positioning is incorporated. Ru.

[0046] First, in FIGS. 1 and 2, the base 8 supported and fixed on the intermediate frame 27 The feed shaft is rotatably supported by bearings 87a and 87b attached to the front and rear ends of the 89 is provided extending in the front-rear direction.

[0047] A slider 93 including a feed nut 91 engaged with this feed screw 89 is It is provided so as to be slidable in the front-rear direction while being guided by a base 85. Above slider 93 A cylinder 95 and a columnar bracket supporting a pin gauge 97 are installed vertically. The arm is pivoted on the hinge pin 97 and extends forward. The pin gauge 83 is vertically fixed at the front end of the pin 99. In addition, The piston rod tip of the cylinder 95 and the arm 99 are connected via a link. Ru.

[0048] On the other hand, a pulley 101 is attached to the front end of the feed screw 89. between the pulley attached to the drive shaft of the servo motor 103 which is suspended and fixed to the base 85. A timing belt 105 is wound around.

[0049] With the above configuration, when the servo motor 103 is controlled and driven by the NC device, it The movement is caused by the timing belt 105, pulley 101, feed screw 89, and feed nut 9. 1 to accurately position the slider 93 at a desired longitudinal position. I can do it. Then, when the cylinder 95 is extended, the arm 99 is hinged via the link. Since it is swung upwards around the pin 97, the pin gauge 83 is oriented vertically upward. , its tip is projected onto the pass line P.

[0050] In addition, 107 in Fig. 2 is the lower plate of the bending machine 3, and 109 is the upper plate that moves up and down. be. Since the work W is bent between the lower plate 107 and the upper plate 109, The rear end of these is the bend line B.

[0051] Next, in the process of positioning the workpiece W with respect to the bending line B of the bending machine 3, The operation will be explained.

[0052] First, when the servo motor 45 is driven, the reference side roller 37 is moved to the standby position shown in FIG. 1 to the right (upward in FIG. 1). (The solid line in Figure 1 is the standby position, It also shows the position where the workpiece W with the minimum width dimension is positioned. Furthermore, the two-dot chain line is the maximum width It shows the position for positioning the work W of the dimensions. ) and is stopped by Open slightly to the right (for example, 20 mm) from the reference position for the workpiece W being carried in. position.

[0053] Simultaneously with this movement of the reference roller side 37, the pusher roller 67 is also moved. Immediately When the gear motor 79 with brake is driven, the pusher roller 67 moves as shown in FIG. is moved to the left (downward in FIG. 1) from the standby position. (The solid line and the two-dot chain in Figure 1 The line representation has the same meaning as explained for the reference side roller 37 above. ) The presser is stopped at a position that is further away from the original position of the workpiece W that is being carried in. or to the left (for example, 20 mm).

[0054] Next, the work W is carried in from the front side of the roller conveyor 5 (left side in Fig. 1). Then, the drive motor 21 is rotated in the forward direction, so all the pipe rollers 9 are rotated in the forward direction. The workpiece W is then transported toward the rear of the front table 1 (toward the right in the figure). sent. When the work W approaches the row of reference side rollers 37, the work W The right side is conveyed along these reference side rollers 37, and the workpiece W is transported to the planned bending position. The positioning is stopped a little beyond the bending line B of the bending machine 3.

[0055] Next, when the servo motor 45 is rotated forward, the reference side roller 37 is rotated on the right side of the workpiece W. While pressing , it is moved to the left to the reference position determined by the NC device.

[0056] Then, when the gear motor 79 rotates forward, the pusher roller 67 moves to the right. and is stopped just before it comes into contact with the left side of the work W (for example, 5 mm). This stopping position The position is detected by a proximity sensor 69 attached to the tip of the holder case 61. be able to.

[0057] Next, the grouped pushers within the range from the rear end to the front end of the work W Only the roller 67 is moved to the right. To do this, the proximity sensor 6 under the work W 9 senses only the cylinders 59 of the group at a distance where the spring 65 acts appropriately (for example, 10mm) to the right. This position can be detected by the proximity sensor 71, but it can also be detected by the The cylinder 59 is adjusted in advance by inserting a washer etc. so that it can move by 10 mm.

[0058] Now, the workpiece W is flattened to the row of reference side rollers 37 at an appropriate position using an appropriate weak force. Since it is being pushed by the workpiece W, it will not tilt even if it moves forward in the next process. It is possible to accurately maintain the left and right position without any problems. and is located in front of the front end of the workpiece W. The pusher roller 67 is slightly smaller than the left side of the workpiece W (for example, 5 mm as shown above). Since it is retracted, the pusher roller 67 will catch on the front end of the workpiece W in the next step. There is no problem.

[0059] Next, when the servo motor 103 is driven, the slider 93 is moved through the feed screw 89. is moved and further stopped at the commanded position of the NC device, the cylinder 95 rises. Since the arm 99 is pushed up around the hinge pin 97, the pin gauge 83 The tip protrudes above the pass line P. Then, when the drive motor 21 is reversed, the The roller 9 is rotated in the opposite direction until the front end of the workpiece W comes into contact with the pin gauge 83. The arc W moves forward and is stopped. This completes the longitudinal positioning of the workpiece W. This means that it has been completed.

[0060] By the way, as mentioned above, when the workpiece W is moved forward from the stopped state, the pipe A slip occurs between the roller 9 and the roller 9, causing damage to both, but in the first embodiment, Since the permanent magnetic roller 23 is incorporated into some of the pipe rollers 9, slips and No scratches, abrasion, etc. will occur.

[0061] Next, a second embodiment of this invention will be described based on the drawings. In the first example In comparison, the side gauge has an abutment sensor and the pusher structure. The only difference is in the structure and operation method. Other differences are due to design reasons. Contrary to the example, there is a side gauge on the left side of the roller conveyor and a pusher on the right side. If the reference side stretch or pusher side stretch is moved to the left or right, For example, there are two feed screws for each type, so parts that have the same function have the same number. number, the same name and explain it.

[0062] First, in FIGS. 5, 6, and 7, the front table 1 is placed in front of the folding machine 3. It is located. The left and right upper frames 7a and 7b of this front table 1 are A plurality of pipe rollers 9 are arranged in the front-rear direction and extend in the left-right direction. Both ends of the shaft 9a are rotatably supported. The roller shaft of these pipe rollers 9 A sprocket 11 is attached to each outer end of the sprockets 9a.

[0063] These sprockets 11 are engaged with separate left and right chains 13a and 13b. There is. These chains 13a, 13b are connected to a plurality of idlers 15 and It is wound endlessly, including the drive sprocket 15a at the end.

[0064] The left and right drive sprockets 15a are connected to the drive shaft 17, sprocket, and chain. The sprocket is attached to the shaft of the drive motor 21 attached to the frame 7 via the spindle 19. connected to a rocket. Then, the parts numbered 7a to 21 above are used as rollers. - Conveyor 5 is configured.

[0065] When the drive motor 21 is rotated in the normal direction with the above configuration, the power is transferred to the chain 19 and the drive shaft. 17, Since it is transmitted to the drive sprocket 15a and the idler 15, the left and right chains The pins 13a and 13b start rotating at the same time. The sprocket that engages these The pipe roller 9 is rotated in the forward direction from the shaft 11 via the roller shaft 9a.

[0066] At this time, when the work W is placed on the roller conveyor 15, the work W is placed on the pass line. It is transported forward on P from the front to the rear. Also, when the drive motor 21 is reversed, at the same time Since the pipe roller 9 rotates in the opposite direction, the workpiece W is moved backwards from the rear to the front. Ru.

[0067] Next, the side gauge 25 will be explained. First, the intermediate frame 27 is provided with a Two rails 31 extending in the left-right direction are placed on the left half of the horizontal frame 29. LM guides 33 are slidably guided in the left and right directions on top of each. A reference side stretch 35 is fixed onto these LM guides 33.

[0068] At the right end of this reference side stretch 35, a plurality of pieces (second implementation In the example, 14 reference side rollers 37 are arranged in the front and back direction, and these reference side rollers 37 are arranged in the front and back direction. The upper end of the side roller 37 is connected to the pass roller on the roller conveyor 5 as shown in FIG. It is provided at a position that projects above the inlet P.

[0069] Also, between the rearmost part and the reference roller 37 one position before this, there is a contact sensor with a contact point. 111 is provided, and the tip of the abutment element 113 is located at a position closer to the tip of the reference side roller 37. It is designed to protrude by 1mm or more (for example, 1mm).

[0070] The details of the abutment sensor 111 are as shown in FIG. A guide tube 117 of the edge material is fixed, and an abutment is inserted into the center hole of this guide tube 117. 113 is provided horizontally so as to be freely slidable in the left-right direction. This abutment 113 and the book A spring 119 is provided between the body 115 and the abutment member 113 to always move it to the right ( In FIG. 8, it is biased to the left).

[0071] On the other hand, the tail protrusion 113a of this abutment 113 and the tail of the guide tube 117 A contact 123 is formed with the terminal tube 121 fixed with adhesive, and is always in an ON state. Ru. When the work W comes into contact with the reference side roller 37, the contact 123 is turned OFF. Become.

[0072] Next, feed nuts 39 are fixed to the front and rear ends of the lower surface of the reference side stretch 35, respectively. and are engaged with feed screws 41 extending in the left-right direction. this The feed screw 41 is rotatably supported at both ends by bearings provided on the horizontal frame 29. ing.

[0073] Furthermore, a pulley 43 is attached to the left end of each feed screw 41, as shown in the figure. 6, the drive of the servo motor 45 hanging from the horizontal frame 29 is performed. An idler pulley is also provided between the pulley attached to the moving shaft and the pulley 43. A timing belt 47 is also wound around the belt.

[0074] With the above configuration, when the servo motor 45 is controlled and driven by the NC device, the Movement is via a timing belt 47, pulley 43, feed screw 41, and feed nut 39. and is transmitted to the reference side stretch 35.

[0075] Then, the reference side stretch 35 is guided by the LM guide 33 and rail 31 and moved to the left. Since it moves rightward, the row of reference rollers 37 is stopped at a desired position.

[0076] Therefore, accurate positioning of the side gauge 25 is possible.

[0077] Next, the workpiece W is pressed against the side gauge 25 to position it. The pusher 49 will be explained with reference to FIGS. 5, 6, 7, and 9.

[0078] First, on the right half of the horizontal frame 29, there are two rails extending in the left-right direction. LM guides 53 are slidably guided in the left and right directions on top of the respective LM guides 51. and the pusher side stretch 55 is fixed on those LM guides 53. There is.

[0079] On the left side of this pusher side stretch 55, there are a plurality of In the second embodiment, 14 pusher rollers 67 are connected to a plurality of roller holders 125. It is rotatably supported on a vertical shaft fixed above. Furthermore, these The roller holder 125 is connected to the pusher via the slide member 127 and the spring 65. It is provided on the side stretch 55 so as to be slidable in the left and right direction.

[0080] Incidentally, an appropriate number of slide members 127 at appropriate positions (in the second embodiment, A cylinder 59 is provided on the slide member 127 of 2), and the other pusher It can protrude to the left from the roller 67. These details are shown in Figure 9. I will provide additional explanation.

[0081] FIG. 9(a) is an explanatory diagram of the area around the normal slide member 127. In Figure 9(a) Then, the linear slide 129 is installed on the pusher side stretch 55. A slide bar 131 is supported so as to be slidable in the left-right direction. this slide The left side of the bar 131 is provided with a spring 65 that rolls on the pusher side stretch 55. A roller holder 125 supported by a wheel 133 is attached. or , a touch arm 135 is fixed upright on the right end of the slide bar 131, and An adjustment bolt whose length can be adjusted in the left and right direction on the main body of the linear slide 129 mentioned above. 137's head is brought into contact with it.

[0082] FIG. 9(b) is an explanatory diagram around the slide member 127 to which the cylinder 59 is attached. It is. The structure is almost the same as the slide member 127 to which the cylinder 59 is not attached. Since they are almost the same, I will only explain the differences. That is, the linear slide 129 book The cylinder 59 is mounted horizontally on a bracket provided on the body with the piston rod pointing to the right. The tip of the touch arm 135 is attached to the touch arm 135 through the collar 139. It is designed to be touched.

[0083] With the above configuration, the spring 65 is always connected to the pusher roller via the roller holder 125. Since the roller 67 is biased toward the left reference side roller 37, the workpiece W is pushed When the roller roller 67 is pressed, the biasing force of the spring 65 moves the workpiece W toward the reference roller 37. It becomes a reaction force pushing back in the direction. Also, make sure that the workpiece W is not in contact with the pusher roller 67. The relative position with respect to the pusher side stretch 55 when the adjustment bolt 137 is This is done through adjustment.

[0084] However, in the slide member 127 to which the cylinder 59 is attached, the adjustment bolt A touch arm 135 is attached to the right end of the slide bar 131 instead of the touch arm 137 with a double nut. Since the double nuts 141 are provided between the two nuts 141, the The free position of the shear roller 67 can be adjusted. and cylinder 59 When the piston rod is retracted, the pusher roller 67 is moved to the left by the biasing force of the spring 65. However, the amount of protrusion (for example, 10 mm) depends on the length of the collar 139 or this. It can be adjusted by replacing several washers instead. Note that in the second embodiment, the system The cylinder 59 is always in an extended state, and the position of the pusher roller 67 is Align the position of the pusher roller 67 attached to the slide member 127 without 59. is being given.

[0085] Now, on the lower right end of the pusher side stretch 55, there are two short strokes ( For example, the main body of the air cylinder 143 (5 mm) has the piston rod facing left. (see Figure 7), and the tip of the piston rod is attached to the nut member 145. It is connected. A feed nut 73 is fixed below this nut member 145. and are respectively engaged with feed screws 75 extending in the left and right direction. is supported by Both ends of the feed screw 75 are provided at the front and rear ends of the horizontal frame 29. It is rotatably supported on a bearing.

[0086] On the other hand, a pulley 77 is attached to the right end of the two feed screws 75. , is attached to the drive shaft of the servo motor 147 which is hung down from the horizontal frame. An appropriate number of eyes are provided at appropriate positions between the pulley and the pulley 77. A timing belt 81 is wound around the belt including the dollar pulley. (See Figure 7) With the above configuration, when the servo motor 147 is rotated, its movement is performed at the timing The pusher side slides through the belt 81, pulley 77, feed screw 75, and feed nut 73. The signal is transmitted to the stretch 55.

[0087] Then, the pusher side stretch 55 is guided by the LM guide 53 and the rail 51. The row of pusher rollers 67 moves to the desired position. Can be stopped on top.

[0088] Furthermore, although the air cylinder 143 is always deflated, this air cylinder 1 43, the pusher side stretch 55 and the pusher loaded on it The roller roller 67 moves to the right by a small distance (eg, 5 mm). That is, the reference roller 3 7, retreat by a small dimension.

[0089] Next, in FIG. 5, a workpiece W is placed in the gap between the left and right upper frames 7a and 7b. A device for operating a pin gauge 83 for longitudinal positioning is incorporated. However, since this device is exactly the same as the first embodiment, the pin gauge 83 is simply replaced here. Positioned in the front-back direction by a feed screw 89 rotated by a servo motor 103. At the same time, the cylinder 95 moves up and down to appear and disappear on the pass line P. A detailed explanation will be omitted.

[0090] In Figures 5 and 6, the workpiece W is the lower plate 107 of the bending machine 3 and the upper plate that moves up and down. 109 and bending is performed, so the rear ends of these become the bending line B.

[0091] Next, in the process of positioning the workpiece W with respect to the bending line B of the bending machine 3, The operation will be explained.

[0092] First, when the servo motor 45 is driven, the reference side roller 37 is at the standby position shown in FIG. Move to the left. (The solid line in Figure 5 is the standby position, and the workpiece W with the minimum width dimension Indicates the position for positioning. Furthermore, the two-dot chain line indicates the positioning of the workpiece W with the maximum width dimension. It shows the position where the ), and the workpiece W being brought in is stopped. This is a position slightly opened to the left (for example, 20 mm) from the reference position.

[0093] Simultaneously with this movement of the reference side roller 37, the pusher roller 67 is also moved. Immediately When the servo motor 147 is driven, the pusher roller 67 is moved to the standby position shown in FIG. is moved to the right. The workpiece W being brought in is stopped. The position will be slightly to the right (for example, 20 mm) from the original presser foot position.

[0094] Next, when the work W is carried in from the front side of the roller conveyor 5, the drive motor 21 is rotated in the forward direction, all the pipe rollers 9 are rotated in the forward direction, and the workpiece is rotated in the forward direction. W is conveyed toward the rear of the front table 1. Then, the work W is placed on the reference side. When it reaches the row of rollers 37, the left side of the workpiece W should be aligned with these reference side rollers 37. The planned bending position of the workpiece W slightly exceeds the bending line B of the bending machine 3. It will be stopped at that point.

[0095] Next, when the servo motor 45 is rotated forward, the reference side roller 37 is rotated on the left side of the workpiece W. While pressing , it is moved to the right to the reference position determined by the NC device.

[0096] Next, when the servo motor 147 is rotated forward, the pusher roller 67 is moved to the left. It is moved and stopped when it comes into contact with the right side of the workpiece W. This contact is It is sensed when the contact 123 of the sensor 111 opens. Also, due to this contact, the work The right side of the pusher roller 67 is lightly rested on the right side by the biasing force of the spring 65 that pushes each pusher roller 67. It is pressed in the direction of the semi-side roller 37. Here, the horizontal positioning of the workpiece W is determined. be done.

[0097] Next, when the air cylinder 143 is extended, the stretch on the pusher side will be small (e.g. For example, 5mm) to the right. That is, it is retreated with respect to the right side of the workpiece W. and then in advance Depending on the length of the work W being input, one of the two cylinders 59 or When two cylinders are retracted, that is, only the cylinder 59 located behind the front end of the workpiece W is retracted. When the pusher roller 67 is compressed, the spring is released through the roller holder 125. It is projected to the left, that is, to the right side of the workpiece W by a biasing force of 65. This overhang amount is If there is no W, the collar 139 will work as a stopper, so it is 10 mm, but in reality If the pusher roller 67 moves a little (for example, 5 mm), it will come into contact with the right side of the workpiece W. Then, the right side of the workpiece W is pressed with an appropriate force by the biasing force of the spring 65 at that point. Ru. Even if the workpiece W is moved forward in the next process, the position in the left and right direction is secured. It will be done.

[0098] Also, when the workpiece W is moved forward in the next stroke, the front side of the workpiece W is The shear roller 67 is retracted 5 mm from the right side of the workpiece W, so the front side is caught. This does not cause the inconvenience that positioning in the front-back direction becomes impossible.

0099 Next, when the servo motor 103 is driven, the feed screw 89 rotates and the pin gauge 83 is positioned in the front-back direction. And to raise cylinder 95 As a result, the tip of the pin gauge 83 is projected above the pass line P.

[0100] Then, when the drive motor 21 is reversed, the pipe roller 9 is reversed and the workpiece W is Moved forward. Then, the front end of the workpiece W comes into contact with the pin gauge 83. will be stopped. This means that the positioning of the workpiece W in the front and back direction has been completed. .

[0101] Then, the upper plate 109 of the bending machine 3 is lowered and the workpiece W is moved between it and the lower plate 107. It is held in place and bent at bend line B.

[0102] Next, FIG. 10 shows an example of a folding machine 149 that performs double ironing, with front and rear A C table 151 and a D table 15 have the same configuration as the front table 1 described above. 3 are provided offset to the left and right.

Since the bending machine 149 has a lower plate and an upper plate at the front and rear, the bending lines are B ₁ and B ₂ at the front and rear. The workpiece W is carried in from the front of the bending machine 149, and iron bending is performed at the rear part of the workpiece W along a bending line _B1 . Then, it passes through the folding machine 149 as it is and is conveyed to the rear. Further, the front part of the workpiece W is subjected to iron bending along the bending line _B2 .

[0104] When the work W is carried into the C table 151, positioning in the left-right and front-rear directions is performed as described for the front table 1. At this time, in order to reliably determine the position in the left and right direction, the side gauge 25 pushes the workpiece W 20 mm to the right to determine the reference position. A first bend is then made at bend line _B1 .

Next, in order to perform iron bending, the workpiece W is positioned in the front-rear direction, and iron bending as a second bending is performed at bending line _B1 .

[0106] Then, while maintaining this horizontal position, the workpiece W passes through the bending machine 149 and rearwards. It will be transported to the D table 153. Therefore, the D table 153 is It is offset 20 mm to the right from cable 151.

Next, on the D table 153, the workpiece W is pushed 20 mm to the right by the side gauge 25 to be positioned in the left-right direction, and then positioned in the front-back direction. A third bend is then made at bend line _B2 . Next, after the workpiece W is positioned in the front-rear direction for iron bending, iron bending as the fourth bending is performed at bending line _B2 .

[0108] FIG. 11 shows a flowchart regarding the bending machine 149, C table 151, and D table 153. - chart, but the operation for front table 1 has been detailed previously. Therefore, I will briefly explain it here.

[0109] First, in step S1, when the bending is completed and the ram that moves the bending die reaches the rising end, , the processed workpiece W on the D table 153 in step S2 is carried out to the rear. Check that the removal is complete. In the next step S3, the C table 151 The workpiece W, which has been completely bent, passes through the bending machine 149 and is carried out. And since it will be carried to D table 153, confirm that it is carried out from this C table. .

[0110] Then, in step S4, a new workpiece W is loaded onto the C table 151.

[0111] Next, the work process from step S5 to step S12 is displayed in the C table 151. At the same time, the D table 153 performs the operations from steps S13 to S20. The business process is carried out.

[0112] In one C table 151, the pusher is turned on in step S5 and the switch is turned on. At the same time as the side gauge 25 approaches the workpiece W, the side gauge 25 also approaches the workpiece W in step S6. The horizontal position of the workpiece W can be adjusted by hitting it and pushing it toward the 20mm pusher 49. A decision is made. Then, by reversing the roller conveyor 5 in step S7, The work W moves forward and comes into contact with the pin gauge 83, and the positioning in the front and back direction is completed. It will be done.

Next, in step S8, the rear part of the workpiece W is bent along the bending line _B1 of the bending machine 149. Then, in step S9, the workpiece W is positioned in the front-rear direction again using the pin gauge 83 in order to perform iron bending.

Next, in step S10, the rear part of the workpiece W is subjected to iron bending along the bending line _B1 . Then, in step S11, the bending die is removed by ironing in the bending machine 149, and in step S12, the ram that moves the bending die up and down is raised. Then, the process is repeated after the bending in step S1 is completed.

[0115] The other D table 153 is also changed to the C table by steps S13 to S20. Exactly the same steps as were performed in 151 are performed. Therefore, the explanation is omitted, but the The difference is that the bending in step S16 and the ironing bending in step S18 are performed before the work W. , pin gauge positioning in step S15, and step S17. Pin gauge positioning is performed by sending the workpiece W backward. That is, bending Since the D table 153 is located at the rear of the hair removal machine 149, the movement of the workpiece W in the back and forth direction is C. Table 151 is the opposite.

[0116] Note that this invention is not limited to the above-mentioned embodiments, and may be modified as appropriate. Therefore, other embodiments may also be implemented.

[0117] For example, in the first embodiment, the gear motor that moves the pusher side stretch 55 If 79 is replaced with a servo motor, the stop position can be commanded, so the proximity sensor 6 9 becomes unnecessary. Furthermore, if you input the size of the workpiece W in advance and have it automatically selected, , it is also possible to program which of the appropriate number of cylinders 59 should be operated. Also, the proximity sensor 69 becomes unnecessary.

[0118]

[Effect of the idea]

As can be understood from the explanation of the embodiments above, the pusher roller is It is supported by the stretch on the pusher side via the elastic body that is biased in the dog gauge direction. The workpiece is pressed flat against the side gauge with a moderately weak force. .

[0119] For this reason, the reference side stretch and pusher side stretch may be bent, or their left and right sides may be bent. Since it is hardly affected by the gap in the feed mechanism in the direction, the side gauge is the original standard. Can hold position accurately.

[0120] Furthermore, in order to compensate for the weak pressing force of the pusher roller, the workpiece is pushed by the pusher. It is operated so that it is pushed back slightly in the direction of the pusher using the side gauge before Therefore, positioning in the left and right direction is more accurate.

[0121] In addition, an appropriate number of slide members are provided with cylinders, and these cylinders Since the related pusher rollers can be moved individually in the direction of the workpiece using the Only the pusher rollers located behind the front side are operated to press the workpiece W.

[0122] Therefore, in order to position the workpiece in the front and back direction, the workpiece is moved backwards on the front table. When the workpiece is brought into contact with the pin gauge, the workpiece may get caught on the pusher roller that is too protruding. Therefore, the inconvenience that positioning in the front-back direction becomes impossible does not occur.

[Brief explanation of drawings]

FIG. 1 is a plan view of a first embodiment of a front table according to the present invention.

FIG. 2 is a right side view in FIG. 1, with a portion cut away for explanation.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is an explanatory plan view regarding a workpiece positioning operation.

FIG. 5 is a plan view of a front table according to a second embodiment of the present invention.

FIG. 6 is a right side view in FIG. 5, with a portion cut away for explanation.

FIG. 7 is a front view of FIG. 5;

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 1;

9(a) is a sectional view taken along line IXa-IXa in FIG. 1, and FIG. 9(b) is a sectional view taken along line IXb-IXb in FIG.

FIG. 10 is an explanatory plan view of a double ironing and folding machine in which front tables are provided at the front and rear.

FIG. 11 is a flowchart regarding the double ironing and folding machine in FIG. 10;

[Explanation of symbols]

1 Front table 3 Folding machine 25 Side gauge 35 Reference side stretch 37 Reference side roller 49 Pusher 55 Pusher side stretch 57 Slide member 65 Spring (elastic body) 67 Pusher roller 83 Pin gauge B Bending line P pass line W work

Claims (3)

[Scope of utility model registration request] [Claim 1] Carrying a plate-shaped work onto a pass line,
A front table for a folding machine that performs positioning with respect to a bending line of the folding machine, and is arranged in the front and rear direction on either the left or right side of the front table as a reference,
and a plurality of reference side rollers that are rotatably supported around a vertical axis, and a reference side stretch that supports these reference side rollers and is movable in the left and right direction with respect to the frame of the front table. With the side gauge,
A plurality of pusher rollers are arranged in the front-rear direction to press the workpiece against the side gauge for positioning, and an elastic body that constantly urges these pusher rollers in the direction of the side gauge is used to push the workpiece around the vertical axis. a pusher which is rotatably supported by the frame and is provided to be movable in the left and right directions with respect to the frame; A front table for a bending machine, comprising a pin gauge. 2. The plurality of pusher rollers are divided into an appropriate number of groups, and an appropriate number of rollers are provided that support the pusher rollers for each group and are movable in the left and right directions with respect to the pusher side stretch. 2. The front table for a folding machine according to claim 1, further comprising a slide member. 3. A suitable number of pusher rollers among the plurality of pusher rollers are provided with roller cylinders so as to be movable individually in the direction of the side gauge with respect to the pusher side stretch, and the pusher rollers are provided with roller cylinders so as to be movable individually in the direction of the side gauge with respect to the pusher side stretch. 2. The front table for a folding machine according to claim 1, wherein the front table is provided so as to be slightly movable in the left and right directions with respect to the frame.