JP3504319B2 - Bending cell - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending machine for bending a work in cooperation with a lower die provided on a lower table and an upper die which can be moved up and down. The present invention relates to a bending cell equipped with various devices which can be carried out and also serve as an assistant during bending.

[0002]

2. Description of the Related Art Conventionally, as a bending machine for bending a work, a press brake is generally well known, for example, from Japanese Utility Model Laid-Open No. 62-25008 and Japanese Patent Laid-Open No. 62-199227. With this press brake, for example, a floor of a parking lot, a can-making member, etc., for example, a length of 2500 to 6000 mm and a width of 300 to 1500 m.
When performing a bending process on a work that is made of m and weighs 260 kg, for example, the work is lifted by a crane, and 4 to 5 workers supply the work to the bending machine for positioning. , The work was reversed when necessary.

[0003]

By the way, during the handling of the work when the work is bent by the above-mentioned conventional bending machine, the work comes into contact with the mold including the lower mold and the upper mold, However, there is a problem that the bending accuracy is deteriorated due to abrasion and damage of the.

When the work is supplied to the bending machine,
It required about 4 to 5 workers at any time, which was inefficient and inefficient, and the labor cost was increased. Furthermore, crane work has always been dangerous and it has been difficult to ensure safe work.

An object of the present invention is to provide a bending cell in which all the steps are automated without requiring manpower when bending a work of a large heavy object, and labor saving and safety are secured. Especially.

[0006]

The present invention has been made in view of the conventional problems as described above. The invention according to claim 1 is a bending process for bending a work by vertically facing punches and dies. Support frames are provided on the front and rear sides of the processing machine so that they can be moved back and forth and up and down, and a front conveyor is provided on the front support frame that can transfer the work backwards beyond the die and at the time of bending. At the time of bending, a front follow-up device that supports the work by following the rising of the work is provided, and a rear conveyor that can move the work forward over the die is provided on the rear side support frame. following the blade of the work up provided a rear follow-up device for supporting a workpiece in the songs
The bent work is placed in the left and right direction on the front side of the bending machine.
Side rollers for transporting to and from the unit can be moved up and down
Is .

The invention according to claim 2 is the same as that of claim 1.
In the bending cell, on the support frame on the front side,
With a configuration equipped with a reversing device for reversing the front and back of the work
There is .

The invention according to claim 3 is the invention according to claim 1 or 2.
In the processing cell described, on each of the front and rear support frames
In the above, when the work passes on the die in the front-back direction,
Located above the die to prevent interference between the die and work
It is a structure equipped with each mold protector .

[0009]

[0010]

[0011]

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Referring to FIGS. 1 and 2, the bending cell 1 is provided with a bending machine 3, and the bending machine 3 transfers and supports a work at the front and rear positions of a mold (details will be described later). Liftable front and rear conveyors 5
A plurality of F and 5R (four sets in this embodiment) are provided at appropriate intervals in the left-right direction (vertical direction in FIG. 1).

The front and rear conveyors 5F and 5R are provided at the lateral positions with a front for pressing the work toward the die,
A plurality of rear pressures 7F and 7R (four sets in this embodiment) are provided. Further, front and rear follow-up devices 9F and 9R are provided at the front and rear positions of the die so as to follow up the work up of the work during bending. Further, on the side of the front and rear conveyors 5F and 5R, the front and rear die protectors 11F, which are located above the die when the work passes over the die and prevent interference between the die and the work,
A plurality of 11Rs (4 sets in this embodiment) are provided.

For example, an example of an elevator conveyor which can move a bent work to one side in the left-right direction (upper side in FIG. 1 in this embodiment) at a position laterally lower than the front and rear conveyors 5F, 5R. A plurality of side rollers 13 (four in this embodiment) are provided.

On the front side (right side in FIG. 1) of the front conveyor 5F, a plurality of transfer conveyors 15 for transferring the work are arranged in the left-right direction at appropriate intervals (4 sets in this embodiment).
It is provided. A reversing device 17 for reversing the front and back of the work is provided at a lateral position of each of the conveyors 15. In addition, a plurality of (three in this embodiment) auxiliary rollers 19 are provided in the left-right direction in parallel with the conveyor 15.

The front side of the transfer conveyor 15 (see FIGS. 1 and 2).
A work table 21 for loading the work is provided on the right side of the figure), and the work stacked on the work table 21 is adsorbed and lifted one by one above the work table 21 and is conveyed to the conveyance conveyor 15. An adsorbing conveyor 23 is provided which can be raised and lowered freely.

On the rear side of the die, a back gauge for abutting the end face of the work, which will be described in detail later, is provided so as to position the work. The back gauge is movable back and forth. A plurality of areas E that are positioned in parallel are provided at positions that do not interfere with the various members in the left-right direction.

As shown in FIG. 3, the bending machine 3 has side frames 25L and 25R,
A lower table 27 is fixedly provided at the lower part of the front portion of each of the side frames 25L and 25R. A lower die D is attached on the lower table 27. A hydraulic cylinder 29 is provided on the upper portion of each of the side frames 25L and 25R, and a piston rod attached to each hydraulic cylinder 29 is provided with a vertically movable ram 31. A punch P as an upper die facing the die D is attached to the lower portion of the ram 31 via a holder 33.

With the above structure, the work is placed on the die D, the hydraulic cylinder 29 is operated, and the ram 31 is moved up and down, whereby the work is bent by the cooperation of the punch P and the die D. become.

It is necessary to position the end surface of the work when bending the work. In order to position this work, a back gauge 35 which is movable back and forth is provided behind the die D (left in FIG. 3). An abutting member 37 is provided at the front part of the back gauge 35,
The abutting member 37 is provided with a touch sensor 39 that detects that the end surface of the work is abutted.

A detection plate 41 is attached to the side frame 25L, and a position detection device 43 is provided on the upper front surface of the detection plate member 41. The position detecting device 43 can detect the ram position when the ram 31 is lowered. Side frame 2
A control box 45 is attached to the side surface of 5L.
One end of a bendant arm 47 is connected to the control box 45, and an NC device 49 is attached to the other end of the bendant arm 47. The NC device 49 controls the bending machine 3, and the NC device 49 is connected to the touch sensor 39 and the position detector 43.

Therefore, when it is detected by the touch sensor 39 that the workpiece is abutted against the abutting member 37,
A detection signal is sent to the NC device 49 to lower the ram 31. Further, the detection signal detected by the position detection device 43 is sent to the NC device 49 and the ram 3
The vertical movement of 1 will be controlled.

The front and rear conveyors 5F and 5R
2 is mounted on trolleys 51F and 51R provided on the floor, as shown in FIGS. That is, the carriages 51F, 51R are the bases 53F, 53R.
An R is provided, and a rotatable roller 55 is supported on the front, rear, left, and right of the bases 53F, 53R, and the roller 55 extends along the guide rail 57 extending in the front-rear direction on the floor surface. It is free to move.

A drive motor 59 is provided on each of the bases 53F and 53R, and a transmission member 61 such as a sprocket and a chain is connected to the drive motor 59, and the transmission member 61 is provided on the bases 53F and 53R. .
In addition, fixed frames 63 are integrally formed on the left and right sides of the bases 53F and 53R, and a movable frame 65 that is vertically movable is provided inside each of the fixed frames 63. The moving frames 65 are vertically moved by a ball screw jack 67.

A support frame 69 is integrated on each moving frame 65. The base 53F, 53R
As shown in FIG. 4, an air cylinder 71 is attached to a substantially central portion in the left-right direction of the, and the tip of a piston rod 73 attached to the air cylinder 71 is fixed to the support frame 69. There is. The front and rear conveyors 5F, 5 are mounted on the support frame 69.
R is provided.

With the above structure, when the drive motor 59 is driven, the roller 55 is rotated via the transmission member 61, so that the carriages 51F and 51R are moved in the front-rear direction. Further, since the ball screw jack 67 moves the fixed frame 63 in the vertical direction, the support frame 69 moves up and down. Therefore,
The front and rear conveyors 5F and 5R are bent,
The die D is moved up and down with reference to the upper surface of the die D, and is moved in the front-rear direction which is the die direction. When the support frame 69 is moved up and down, the air cylinder 71 is operated to smoothly move up and down.

As the front conveyor 5F, as shown in FIGS. 5 and 6, the support frame 69 is used.
The conveyor frame 77 is integrated with the plurality of support blocks 75 on the top. A drive motor 79 is mounted on the support frame 69.
A drive sprocket 83 is fitted to the output shaft 81 of the reference numeral 9. A rotary shaft 85 extending in the left-right direction (up-down direction in FIG. 5) is provided, and a sprocket 87 is fitted to one end (lower end in FIG. 5) of the rotary shaft 85. A chain 89 is wound around the sprocket 87 and the drive sprocket 83.

The rotary shaft 85 is provided with 4
The individual sprockets 91 are fitted. Each sprocket 91 is provided with a sprocket 95 via a chain 93. A rotating shaft 97 is mounted on each sprocket 95, and a sprocket 99 is fitted on each rotating shaft 97. A rotatable sprocket 101 is supported on the right side of the conveyor frame 77 in FIG.
A conveyor chain 103 is wound around the sprocket 99 and the sprocket 99.

With the above structure, when the drive motor 79 is driven, the drive sprocket 83 is rotated via the output shaft 81. The rotation of the drive sprocket 83 causes the rotation shaft 85 to pass through the chain 89 and the sprocket 87.
Is rotated. Further, the rotation of the rotary shaft 85 causes the sprocket 91, the chain 93, the sprocket 95,
Since the sprocket 99 is rotated via the rotary shaft 97, the transfer chain 103 is rotated and rotated in the left direction as indicated by the arrow in FIGS. 5 and 6, and the work is transferred to the bending machine 3 side.

As the rear conveyor 5R, as shown in FIGS. 7 and 8, the front conveyor 5F is used.
Since the drive mechanism is the same as, the duplicated description will be omitted by giving the same reference numerals. That is, the drive motor 79 is provided on the right side of the support frame 69, and each transmission mechanism is also attached on the right side.

With the above structure, when the drive motor 79 is driven, the drive sprocket 83 is rotated via the output shaft 81, and the chain 89, the sprocket 87, the rotary shaft 85, the sprocket 91, the chain 93, the sprocket 95, and the rotary shaft. Sprocket 9 through 97
Since 9 is rotated, the transfer chain 103 is rotated and rotated in the right direction as indicated by an arrow in FIGS. 7 and 8, and the work is transferred to the bending machine 3 side.

As each of the front pushers 7F, as shown in FIGS. 9 and 10, the frame 105
Each frame 105 has a front-back direction (Fig. 9,
Guide rail 10 extending in the left-right direction in FIG.
7 is laid. A pusher member 111 is provided on the guide rail 107 via a plurality of guide members 109. The front and rear ends of each frame 105 (the left and right ends in FIG. 10, and a rotatable pulley 1 at the center)
13, 115 and 117 are attached and a plurality of rotatable auxiliary pulleys 119 are attached. Moreover, the belt 121 is wound around the pulleys 113, 115, 117 and 119. The pusher member 111 is attached to a part of the belt 121.

A hollow shaft 123 extending in the left-right direction (vertical direction in FIG. 9) is attached to each pulley 117. An encoder 125 as a position detector is attached to one end (upper end in FIG. 9) of the hollow shaft 123. A drive motor 129 is connected to the hollow shaft 123 via a transmission mechanism 127.

When the drive motor 129 is driven by the above structure, the hollow shaft 123 is rotated via the transmission mechanism 127. The rotation of the hollow shaft 123 causes the belt 121 to travel and rotate leftward in FIG. 10, whereby the pusher member 111 is moved leftward in FIG. The movement amount of the pusher member 111 is detected by the encoder 125.

The tip portion 111 of each pusher member 111
As shown in FIG. 11, A is oscillated in a vertical direction from a solid line state to a two-dot chain line state with a pin 131 as a fulcrum. That is, each pusher member 111 is swung at the rearmost end (at the rightmost end in FIG. 10).

As the rear pusher 7R, as shown in FIGS. 12 and 13, the front pusher 7R is used.
Since the drive mechanism is the same as that of F, the same members are designated by the same reference numerals and duplicate description will be omitted. That is, the drive motor 129 is provided on the left side of the hollow shaft 123, and the pusher member 111 is attached to the belt 121 in the opposite direction.

When the drive motor 129 is driven by the above-described structure, the hollow shaft 123 is rotated and the belt 121 is rotated rightward in FIG. 13 to be moved rightward. The movement amount of the pusher member 111 is detected by the encoder 125.

The tip portion 11 of each pusher member 111
As shown in FIG. 14, 1B is fixed by a pin 133 so as not to swing.

The front follow-up device 9F is shown in FIG.
5 and FIG. 16, as shown in FIG.
5, each work supporting member 135 extending in the left-right direction) is provided.
A plurality of electromagnetic magnets 137 are provided at appropriate intervals. A support block 139 is provided below each work support member 135, and each support block 139 has a left-right direction (vertical direction in FIG. 15, FIG. 16).
Is attached to a drive shaft 141 extending in a direction (perpendicular to the paper surface). Moreover, one end of the link 143 is attached to the drive shaft 141, and the link 147 is pivotally supported by the pin 145 at the upper left end of the support block 139.

The other ends of the links 143 and 147 are pin 1
One ends of the links 153 and 155 are pivotally supported by 49 and 151, and the other ends of the links 153 and 155 are attached to the work supporting member 135. A gear 157 is fitted to one end (lower end in FIG. 15) of the drive shaft 141, and a gear 161 fitted to the output shaft of the drive motor 159 is meshed with the gear 157.

With the above structure, when the drive motor 159 is driven, the drive shaft 141 is rotated via the output shaft and the gears 161 and 157. The rotation of the drive shaft 141 causes the links 143 and 147 to rotate counterclockwise, so that the work support member 135 is rotated from the solid line position to the two-dot chain line position via the links 153 and 155. As the work is bent, it follows and serves to support the work.

The rear follower device 9R is shown in FIGS.
Since the drive mechanism is the same as that of the front follow-up device 9F, the same parts are designated by the same reference numerals and duplicate description will be omitted. That is, the difference is that the drive motor 159 and each link mechanism are provided on the right side. In short, the work support member 135 swings clockwise to support the work.

As the front die protector 11F, as shown in FIGS. 19 and 20, each frame 173 is provided on the support frame 69 via a plurality of support blocks 171. A drive cylinder 175 is attached to the right side of each frame 173 in FIGS.
A transfer chain 179 is provided at the tip (left end) of the piston rod 177 attached to the.

A guide rail 181 is laid on the left side of the frame 173 in FIGS. 19 and 20,
The transport chain 179 is provided on the guide rail 181 via a plurality of guide members 183.

With the above structure, when the drive cylinder 175 is operated, the transfer chain 179 is guided by the guide rail 181 via the piston rod 177, and the transfer chain 179 is guided by the guide rail 181.
At 0, the position is moved from the position of the solid line to the position of the chain double-dashed line. The state of being moved to the position indicated by the chain double-dashed line is located above the die D, and serves to prevent damage and scratches to the die D when the work W passes over the die D.

It is usually located at the height of the pass line, and the front conveyor 5F moves upward when the work is moved above the die D, and then the front die protector 11F is moved to the position above the die D by the drive cylinder 175. Move
It is possible to prevent damage and scratches on the die D.

The rear mold protector 11R has the same structure as that of the front mold protector 11F described above, and only the direction thereof is reversed. Therefore, the drawings and the description thereof are omitted.

The side rollers 13 are shown in FIG.
And each frame 185 as shown in FIG.
The frame-equipped frame 185 is provided with flanged ball bushes 187 on both left and right sides in FIG. 22, and the flanged ball bushing 187 is provided with a medium cylindrical guide member 189. A guide rod 191 is attached to each of the guide members 189 so as to be vertically movable. A support frame 193 is attached to the upper portion of each guide rod 191.

In FIG. 22 of each frame 185, a raising and lowering syrin 195 is attached at a substantially central portion,
The tip of the piston rod 197 mounted on the lifting cylinder 195 is attached to the support frame 193. The frame 199 for the transport roller is integrated on both sides in FIG. 22 of the support frame 193. A rotatable transport roller 201 is supported on each of the transport roller frames 199. Each of the transport rollers 201
Are simultaneously rotated by a known sprocket, chain and drive motor (not shown).

With the above structure, when the lifting cylinder 195 is operated, the support frame 193 is lifted via the piston rod 197. When the support frame 193 is lifted, the guide rod 191 is guided by the guide member 189 to ascend, and the support frame 193 serves as a guide for smoothly rising.

As the support frame 193 rises, the conveying roller 201 is positioned above the pass line, and the bent work is conveyed upward as shown by the arrow in FIG. 21 and is conveyed out.

As the transport conveyor 15, as shown in FIGS. 23 and 24, a support frame 203 is used.
A conveyor frame 207 is integrated on the upper side of the support blocks 205. The support frame 20
3, a drive motor 209 is attached, and the output shaft 211 of this drive motor 209 has a drive sprocket 2
13 is fitted. Further, a rotary shaft 215 extending in the left-right direction (vertical direction in FIG. 23) is provided, and a sprocket 217 is fitted to one end (lower end in FIG. 23) of the rotary shaft 215. A chain 219 is wound around the sprocket 217 and the drive sprocket 21.

Four sprockets 221 are fitted on the rotary shaft 215 at appropriate intervals. Each sprocket 221 is provided with a sprocket 225 via a chain 223. This sprocket 225
A rotary shaft 227 is mounted on the rotary shaft 227, and a sprocket 229 is fitted on each rotary shaft 227. A rotatable sprocket 231 is supported on the left side of the conveyor frame 207 in FIG.
A transport chain 233 is wound around the sprocket 231 and the sprocket 229.

With the above structure, when the drive motor 209 is driven, the drive sprocket 2 is driven through the output shaft 211.
13 is rotated. The rotation of the drive sprocket 213 causes the rotation shaft 215 to rotate via the chain 219 and the sprocket 217. Further, the rotation of the rotary shaft 215 causes the sprocket 221 and the chain 22.
3, the sprocket 229 is rotated through the sprocket 225 and the rotary shaft 227, so that each transport chain 23
1 is rotated leftward as indicated by an arrow in FIGS. 23 and 24, and the work is conveyed to the front conveyor 5F side.

As the reversing device 17, as shown in FIGS. 25 and 26, four reversing bars 235A, at appropriate intervals in the left-right direction (vertical direction in FIG. 25),
235B are provided to face each other in the front-rear direction (left-right direction in FIG. 25). These inversion bars 235A, 23
Rotation shafts 237A and 237B are shown on the left and right sides of 5B in FIG.
In the vertical direction, the rotary shafts 237A and 237B are provided with drive motors 241 via transmission members 239A and 239B such as sprockets and chains.
A and 241B are connected.

With the above structure, the drive motors 241A, 2
When 41B is driven, transmission members 239A, 239B
Through the rotary shafts 237A, 237B are counterclockwise,
By rotating clockwise, the reversing bar 235
Each of A and 235B is rotated counterclockwise and clockwise as indicated by the arrow from the position indicated by the solid line to the position indicated by the chain double-dashed line.

Referring also to FIG. 27, each inversion bar 2
A bracket 243 is attached to the side surface of 35A, and a pushing cylinder 247 is provided on the bracket 243 via a support block 245. A push-out bar 251 is attached to the tip of a piston rod 249 attached to the push cylinder 247.

With the above structure, the work is turned over by the reversing bar 235.
27, the reversing bar 235A is rotated counterclockwise to the position indicated by the solid line in FIG.
When the push cylinder 247 is operated while rotating to the position indicated by the dotted chain line, the pushing bar 251 is rotated from the position indicated by the solid line to the position indicated by the chain double-dashed line, and the work is pushed out to the reversing bar 235B for reversal. .

In FIG. 25, a plurality of pivots 253 are provided between each reversing bar 235A and each reversing bar 235B as a work supporting member for supporting the lower end of the work extruded by the extruding bar 251. . More specifically, as shown in FIG. 28, the bracket 255
A support frame 257 is attached to the frame with a plurality of bolts 259.

A plurality of mounting blocks 261 are mounted on the support frame 257 with a plurality of bolts, and the pivot drive cylinder 2 is attached to each of the mounting blocks 261.
The lower end of 63 is provided. The pivot 253 is provided at the tip of a piston rod 265 mounted on the pivot drive cylinder 263. Each pivot 253 is rotatably supported by a pin 267.

A plurality of support pins 269 are attached to the upper portion of the support frame 257.
9 is the pivot 25 when the pivot 253 rises.
A U-shaped locking groove 253U formed in No. 3 is engaged and supported.

With the above structure, the pivot drive cylinder 2
When 63 is actuated, the pivot 253 pivots through the piston rod 265 with the pin 267 as the fulcrum to rotate and rise, and the locking groove 253U engages with the support pin 269 and is supported so as not to rise further. It will be. That is,
The pivot 253 is raised from the position indicated by the solid line to the position indicated by the chain double-dashed line.

The pivot 253 serves as an axis when the work is rotated in a raised state, and prevents the work from slipping. When the bent flange of the work is long, the work is prevented from slipping by the pivot 253 on the left side of FIG. 28, and the right pivot 253 is set by the weight of the work. When the work is flat, the right pivot 253 prevents the work from slipping.

A plurality of pivots 253 may be provided to correspond to various flange lengths of the work, or may be provided so as to be movable in the left and right directions.

As shown in FIG. 29, a frame 271 is erected on the transfer conveyor 15 and its front portion. In FIG. 29 of the frame 271, the work table 21 on which the work W to be processed is loaded is provided between the right frame 271R and the middle frame 217M.

On the upper frame 271U of the frame 271, a suction conveyor 23 is provided which is movable in the front-rear direction (left-right direction in FIG. 29). That is, the guide rail 273 extending in the front-rear direction is laid on the upper frame 271U. A moving frame 277 is provided on the guide rail 273 via a plurality of guide members 275.

A plurality of vertically movable guide rods 279 are mounted on the moving frame 277.
At the lower end of the guide rod 279, a suction frame 281 is attached.
Are integrated. A plurality of suction pads 283 are attached to the suction frame 281. An elevating motor 285 is provided on the moving frame 277,
A drive sprocket 287 is connected to the lifting motor 285. Moreover, one end of the chain 289 is fixed to the drive sprocket 287, and the chain 2
The other end of 89 is fixed to the suction frame 281.

With the above structure, when the lifting motor 281 is driven, the drive sprocket 287 is rotated, so that the suction frame 281 is vertically moved through the chain 289. The suction frame 281 descends and the uppermost work W stacked on the work table 21 is sucked by the suction pad 283. When one piece of the work W is sucked by the suction pad 283, the suction frame 281 is raised to the transport position.

Rotatable sprockets 291 and 293 are supported at the front and rear ends of the frame 271, and a movable chain 295 is wound around the sprockets 291 and 293. The moving frame 277 is attached to a part of the moving chain 295. Also, the right frame 271R in the frame 271
A moving motor 297 is provided on the upper side surface of the. A sprocket 299 is connected to the moving motor 297, and another sprocket 301 is fitted coaxially with the sprocket 291. Moreover, the chain 303 is wound around the sprocket 301 and the sprocket 299.

With the above structure, when the moving motor 297 is driven, the sprocket 299 is rotated. By the rotation of the sprocket 299, the sprocket 291 is rotated via the chain 303 and the sprocket 301,
By moving and rotating the moving chain 295 to the left in FIG. 29, for example, the moving frame 277 is moved from the position indicated by the solid line to the position indicated by the chain double-dashed line.

Therefore, after the work W on the work table 21 is sucked by the suction pad 283 and lifted to the carrying position, the moving frame 277 is moved from the position indicated by the solid line to the position indicated by the chain double-dashed line. After that, the work W is transferred to the transfer chain 2 of the transfer conveyor 15 by lowering the suction frame 281 and releasing the suction pad 283.
It will be placed on 33.

The operation of taking out the works W stacked on the work table 21 one by one to obtain a bent product as shown in FIG. 30 will be described.

As shown in FIG. 31, the work table 2
From the work W loaded on the No. 1 suction frame 281
Is lowered to suck the work W in the uppermost layer with the suction pad 283, and then lifted. After lifting the work W,
When the suction frame 281 reaches the position above the transport conveyor 15 by moving the transport frame 277 toward the transport conveyor 15, the transport frame 277 is stopped. The suction frame 281 is lowered to release the suction pad 283, and the work W is placed on the transport chain 233 of the transport conveyor 15.

The work W placed on the transfer chain 233 of the transfer conveyor 15 is transferred to the front conveyor 5F. The work W on the front conveyor 5F is pressed by the front pusher 7F and abutted against the abutting member 37 of the end surface back gauge 35 of the work W to be positioned.

[0076] The ram 31 is lowered by the detection signal punch P and the die D cooperation from the touch sensor 39 provided in the member 37 abutting, the bent portion W _A of the workpiece W shown in FIG. 30 Bending is performed. At this time, the front follow-up device 9F is rotated while being raised, and follows the work W according to the rising of the work W to support the work W.

When the bending work on one side of the work W is completed, the front follower 9F is returned to its original position, and the bent piece is pressed by the front pusher 7F, and the abutting member 37 of the back gauge 35 is pressed. It is abutted against and positioned.

As shown in FIG. 32, the ram 31 is lowered by the detection signal from the touch sensor 39 provided on the abutting member 37, and the punch P and the die D cooperate with each other, as shown in FIG. Bending is performed on the bent portion W _B of the work W. At that time, the front follow-up device 9 is used as described above.
F operates to support the work by following up the work W as it rises.

As shown in FIG. 33, the front,
The rear die protectors 11F and 11R are actuated to position the die W above the die D, the work W passes through the die D and is placed on the rear conveyor 5R, and the back gauge 35
It is positioned by abutting against the abutting member 37. Similarly to the above, the bending work is performed on the bent portion W _C of the work W shown in FIG. At that time, the rear follow-up device 9R operates and follows the work W in accordance with the rising of the work W to support the work W.

The rear follow-up device 9R is returned to its original position, and the front and rear die protectors 11F and 11R are actuated to transfer the work W to the transfer conveyor 15 via the front conveyor 5F. The work W placed on the transfer conveyor 15 has the reversing bars 235A and 235 of the reversing device 17.
It is reversed by activating B. That is, the inversion bar 235
After the work W is rotated about 90 degrees by A, it is reversed by the reversing bar 235B as shown in FIG.

As shown in FIG. 35, after being transferred onto the front conveyor 5F, the bending portion W _D shown in FIG. 30 is bent in the above-described manner. Furthermore, FIG.
As shown in FIG. 6, the bending process is performed on the bent portion W _E shown in FIG. 30 in the above-described manner. Then, by returning the rear follower device 9R to the original position, the bending work W _{A to} W _E of the work W is finished as shown in FIG. 37, and the bending as shown in FIG. 30 is completed. The product is obtained. Then, it is carried out by the side roller 13.

In this way, when bending a work of a large heavy object in particular, all the steps can be automated without bending, and the bending work can be performed, and labor saving and safety can be achieved. Can be secured.

By providing the front and rear conveyors 5F and 5R at the front and rear positions of the die D in the bending machine 3, the work W can be stably supported. By providing front and rear pushers 7F and 7R that press the die D side of the mold at the lateral positions of the front and rear conveyors 5F and 5R, the work W is attached to the abutting member 37 of the back gauge 35 by the operation of the front pusher 7F. Since the work W is abutted, the work W can be automatically positioned, and the positioning accuracy can be improved.

By providing the touch sensor 39 on the abutting member 37 of the back gauge 35, the touch sensor 3
The vertical movement of the ram 31 can be automatically performed by the detection signal of 9. Also, front and rear conveyors 5F, 5R
Since the front and rear follow-up devices 9F and 9R are provided on the side of the work W, the work W can be supported by following the rising of the work W when the work W is bent. Therefore, the bending of the work W can be prevented.

By providing the front and rear mold protectors 11F and 11R on the sides of the front and rear conveyors 5F and 5R, interference between the mold (die D) and the work W can be prevented and damage to the mold can be prevented. Work scratches can be prevented.

By providing the side roller 13 as a carry-out conveyor on the front conveyor 5F side, the bent work W can be easily carried out to one side in the left-right direction.

By providing the conveyor 15 with the reversing device 17, the reversing work of the work W can be automatically performed. By providing the work table 21 and the suction conveyor 23 on the front side of the transport conveyor 15, the work W to be processed by automatically taking out the work W stacked on the work table 21 one by one to the bending machine 3 is automatically provided. Can be supplied.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0089]

As will be understood from the above description of the embodiments, according to the present invention, when a work is bent, no labor is required and all the steps are automated and bent. It is possible to save labor and ensure safety. It is particularly effective for bending a large heavy work piece.

[0090]

[0091]

By providing the front and rear mold protectors on the sides of the front and rear conveyors, it is possible to prevent interference between the mold and the work, and prevent damage to the mold and damage to the work.

[0093]

By providing the conveyor with the reversing device, the reversing work of the work can be automatically performed.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a bending cell of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view of the bending machine.

FIG. 4 is a front view of a truck on which the front and rear conveyors in FIG. 2 are mounted.

FIG. 5 is a plan view of a front conveyor.

FIG. 6 is a side view of FIG.

FIG. 7 is a plan view of a rear conveyor.

FIG. 8 is a side view of FIG.

FIG. 9 is a plan view of a front pusher.

FIG. 10 is a side view of FIG.

11 is an enlarged view of the pusher member in FIG.

FIG. 12 is a plan view of a rear pusher.

FIG. 13 is a side view of FIG.

FIG. 14 is an enlarged view of the pusher member in FIG.

FIG. 15 is a plan view of a front tracking device.

16 is a side view of FIG.

FIG. 17 is a plan view of a rear tracking device.

FIG. 18 is a side view of FIG.

FIG. 19 is a plan view of a front mold protector.

FIG. 20 is a side view of FIG.

FIG. 21 is a plan view of a side roller.

22 is a side view of FIG. 21. FIG.

FIG. 23 is a plan view of the transfer conveyor.

FIG. 24 is a side view of FIG. 23.

FIG. 25 is a plan view of the reversing device provided on the transfer conveyor.

FIG. 26 is a side view of FIG. 25.

FIG. 27 is an enlarged view of a reversing bar portion in the reversing device.

FIG. 28 is an enlarged view of a pivot portion of the reversing device.

FIG. 29 is a side view of the work table and the suction conveyor.

FIG. 30 is a side view showing one side of a bent work.

FIG. 31 is an explanatory diagram of an operation of bending the work.

FIG. 32 is an explanatory diagram of an operation of bending the work.

FIG. 33 is an explanatory diagram of an operation of bending the work.

FIG. 34 is an explanatory diagram of an operation of bending the work.

FIG. 35 is an explanatory diagram of an operation of bending the work.

FIG. 36 is an explanatory diagram of an operation of bending the work.

FIG. 37 is an explanatory diagram of the operation of bending the work.

[Explanation of symbols]

1 Bending cell 3 bending machine 5F, 5R Front and rear conveyors 7F, 7R front, rear pusher 9F, 9R front and rear follower 11F, 11R Front, rear mold protector 13 Side rollers (carry-out conveyor) 15 Conveyor 17 Reversing device 21 work table 23 Adsorption conveyor 27 Lower table 31 Ram 35 back gauge

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B21D 5/02 B21D 43/04 B21D 43/14 B21D 43/18 B21D 43/24 B21D 45/00

Claims (3)

(57) [Claims] 1. A support frame (69) is movable back and forth on a front side and a rear side of a bending machine (3) for bending a work (W) by a punch (P) and a die (D) which are vertically opposed to each other. Further, the work (W) is provided on the front side support frame (69) over the die (D) so as to be vertically movable.
Is provided with a front conveyor (5F) that can be moved rearward, and a front follower (9) that supports the work (W) by following up the work (W) when it is bent.
F) is provided, a rear conveyor (5R) is provided on the rear side support frame (69) that can transfer the work (W) forward beyond the die (D), and the work (B) at the time of bending ( The bending machine is provided with a rear follow-up device (9R) for supporting the work (W) by following the rising of (W).
On the front side of (3), the bent work W is placed in the left-right direction.
Side roller (13) for transporting to
Bending processing cell you, characterized in that digit. 2. The bending cell according to claim 1, further comprising a reversing device (17) for reversing the front and back of the work (W) on the front side support frame (69). Bending cell to do. 3. The bending cell according to claim 1 or 2, wherein the work (W) passes over the die (D) on the front and rear support frames (69) in the front-rear direction. A die protector (11F, which is located above the die (D) and prevents interference between the die (D) and the work (W).
11R), respectively, a bending cell.