JPH0641698Y2 - Clamping device for plate processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a clamping device for plate material processing such as a plate material bending machine.

(Prior Art) Conventionally, in order to process a plurality of locations on the same plate material, a turntable has been provided near the center of a work table arranged on the front side of the plate material processing machine. The turntable is rotatable, and the plate material that has been moved onto the turntable can be rotated.

That is, the clamp device holding the plate material is moved to the plate material processing position, and the plate material processing machine processes the desired portion of the plate material. When processing the other part of the same plate material, the clamp device is moved to the position above the turntable, the holding state of the plate material is released, and the turntable is appropriately operated to rotate the plate material. Then, the plate material is gripped again by the clamp device, the clamp device is moved to the plate material processing position, and the other part of the same plate material is processed by the plate material processing machine.

(Problems to be solved by the invention) As described above, in the case of processing the same plate material at a plurality of positions, conventionally, it is necessary to provide a rotatable turntable on the work table, which increases the space of the work table. However, there was a problem that the factory space could not be effectively used.

In addition, the clamp device must be moved from the plate material processing position to the position on the turntable every time the processing position of the same plate material is changed, and the time required to move the clamp device is
That is, there is a problem that it takes an idle time and the work efficiency deteriorates.

Therefore, an object of the present invention is to provide a clamp device in a plate material processing machine capable of appropriately rotating a plate material in order to solve the above problems.

[Means for Solving the Problems] (Means for Solving the Problems) In view of the conventional problems as described above, the present invention provides a carriage provided on the front side of a plate material processing machine so as to be movable in the front-rear direction. A plate member placed on a work table provided on the front side can be supported from below. A lower pressing member is horizontally rotatable and can be retracted from the upper surface of the work table, and is provided above the lower pressing member. In addition, an upper pressing member that is capable of pressing the upper surface of the plate member facing the lower pressing member is provided at the tip of the arm portion of the carriage so as to be swingable in the front-rear and left-right directions and horizontally rotatable. .

(Example) Referring to FIG. 1, FIG. 2, and FIG. 3, as a plate material processing machine, for example, the front side of the plate material bending machine 1 (lower side in FIG. 1, facing the paper surface in FIG. 2). The work table 3 is installed on the front side (left side in FIG. 3).

On the right side of the work table 3 (the right side in FIGS. 1 and 2 and the front side facing the paper surface in FIG. 3), in other words, on the loading side of the plate bending machine 1, the loading table 5 is provided.
Are arranged on the left side of the work table 3 (the left side in FIGS. 1 and 2 and the back side in FIG. 3 toward the paper surface), in other words, on the carry-out side of the plate bending machine 1,
For example, a belt conveyor 7 is arranged to send the processed plate material W to the next step.

The plate bending machine 1 is provided with an elevating frame 11 which is swingable in the vertical direction above the fixed frame 9. The fixed frame 9 is provided with a lower plate 13 extending in the left-right direction, and the elevating frame 11 is provided with an upper plate 15 facing the lower plate 13 and extending in the left-right direction.

With the above-described structure, the plate frame W is clamped and fixed by the upper plate 15 and the lower plate 13 by swinging the elevating frame 11 in the vertical direction, and the clamped state is released.

Since the projecting portion of the plate material W clamped and fixed by the upper plate 15 and the lower plate 13 is bent downward or upward, the upper bending die 17,
A bending die frame 21 having a lower bending die 19 is provided so as to be vertically swingable.

With the above configuration, by appropriately operating the bending die frame 21, the upper bending die 17 swings downward, or the lower bending die 19 swings upward, so that the protruding portion of the plate material W is lowered. It can be bent in either direction or upward.

The work table 3 arranged on the front side of the plate material bending machine 1 is composed of left and right work tables 3a, 3b extending to the vicinity of the plate material bending machine 1 as shown in FIG. More specifically, the work tables 3a and 3b are
It is provided on a lower frame 23 extending to the fixed frame 9 of the plate material bending machine 1 through columns 25 and 27. A free bearing 28 is mounted on the work table 3 to support the plate material W on the pass line.

A carriage 31 having a clamp device 29 for gripping the plate W is provided on the work table 3 so as to be movable in the front-rear direction.

More specifically, the carriage 31 has a gate-shaped frame 35 erected on a lower plate 33 extending in the left-right direction, and a clamp device 29 is provided at the rear center of the gate-shaped frame 35. Further, the clamp device 29 is arranged between the work tables 3a and 3b.

Guides 37 extending in the front-rear direction are provided at appropriate positions on the lower frame 23 so as to face each other in the left-right direction, and a traveling portion 39 guided by the guides 37 is formed on the lower plate 33. A rotatable ball screw 43 is supported by a bearing 41 provided at an appropriate position of the lower frame 23, and a nut member 45 screwed to the ball screw 43 is provided on the lower surface of the lower plate 33. The ball screw 43 is
A rotary shaft of a motor 47 mounted on the lower frame 23 is interlockingly connected via a drive pulley 49, a driven pulley 51, and a belt 53. The motor 47 is provided with a clamp encoder (not shown) in order to detect the position of the clamp device 29 in the front-rear direction.

With the above configuration, by appropriately operating the motor 47, the ball screw 43 is interlocked and rotated, and the carriage 31 including the nut member 45 moves in the front-rear direction. Therefore, the clamp device 29 for gripping the plate material W can move between the work tables 3a and 3b in the front-rear direction, in other words, between the plate material processing position and the plate material processing avoiding position. .

For details of the clamp device 29, refer to FIG. 4 and FIG. 5. The clamp device 29 extends backward (to the right in FIG. 4, and to the front in FIG. 5). An upper grip 55 and a lower grip 57 are provided so as to face each other vertically, and the plate material W is gripped by the upper pressing member 59 of the upper grip 55 and the lower pressing member 61 of the lower grip 57. It is a thing. A pad 63 such as urethane rubber is attached to the upper pressing member 59 and the lower pressing member 61.

The lower pressing member 61 is provided to be vertically movable and rotatably provided.

More specifically, the rear surface of the carriage 31 is provided with a support member 69 having an upper support portion 65 and a lower support portion 67 extending rearward, and the support cylinder 71 provided in the upper support portion 65 has A boss member 73 is rotatably supported. Lower pressing member 61
A spline shaft 75 attached to the lower side is provided in engagement with the boss member 73. Therefore, the lower pressing member 61 can move up and down with respect to the boss member 73 and can rotate with respect to the support cylinder 71.

In order to adjust the position of the lower pressing member 61 in the vertical direction, the lower support portion 67 is provided with a vertical movement adjusting device 77.

That is, the vertical cylinder 79 in the vertical movement adjusting device 77.
Is provided at the rear portion of the lower support portion 67, and the piston rod 81 that is capable of projecting upward from the vertical cylinder 79 is a coupling tool.
It is connected to the spline shaft 75 via 83. Therefore, by appropriately operating the up-down adjustment device 77,
By vertically moving the spline shaft 75, the position of the upper surface of the lower pressing member 61 can be vertically adjusted to, for example, a pass line position, a position higher than the pass line, or a position lower than the pass line.

Further, the lower pressing member 61 can be rotatable at a desired angle. That is, a rotary motor 87 is attached to the lower support portion 67 via a motor bracket 85, and a drive gear 89 is integrally attached to the rotary shaft of the rotary motor 87. The drive gear 89 is meshed with an intermediate gear 93 rotatably supported by a support cylinder 91 provided in the upper support portion 65, and the intermediate gear 93 is a follower integrally attached to the boss member 73. It meshes with the gear 95.

Therefore, by appropriately operating the rotation motor 87, the spline shaft 75 and the lower pressing member 61 are interlocked and rotated via the drive gear 89, the intermediate gear 93, and the driven gear 95. Further, since the rotation motor 87 is provided with a rotation encoder (not shown), the lower pressing member 61 can be rotated at a desired angle.

In order to grip the plate material W, the upper pressing member 59 is provided so as to be vertically swingable.

More specifically, the arm bracket 97 attached to the rear surface of the carriage 31 is provided with an L-shaped arm member 101 via a hinge pin 99 as shown in FIG. Arm member 1
One end 101a of 01 is formed to extend to a position above the lower pressing member 61. One end 101a of the arm member 101
An upper pressing member 59 is provided on a surface of the lower surface facing the lower pressing member 61. Therefore, the upper pressing member 59 is swingable in the vertical direction about the hinge pin 99.

In order to swing the upper pressing member 59 in the vertical direction, the cylinder bracket 103 attached to the rear side of the carriage 31 has
A swing cylinder 105 is swingably provided via a hinge pin 107. The piston rod 109 which is capable of projecting rearward from the swing cylinder 105 includes an arm member 101 extending upward.
Is connected to the other end 101b.

Therefore, by appropriately operating the swing cylinder 105, the upper pressing member 59 swings about the hinge pin 99, and the plate material W can be gripped in cooperation with the lower pressing member 61. Is.

Upper pressing member 5 attached to the end 101a of the arm member 101
9 is in the front-back direction (left-right direction in FIG. 4, front-back direction toward the paper surface in FIG. 5), left-right direction (front-back direction toward the paper surface in FIG. 4, left-right direction in FIG. 5) Not only is it swingable, but it is also rotatable.

More specifically, the end portion 101a of the arm member 101 has a first swinging member 113 that is swingable in the left-right direction via a hinge pin 111.
Is provided. The hinge pin 1 is attached to the first swing member 113.
A second swinging member 117 that is swingable in the front-rear direction via 15 is provided, and this second swinging member 117 is provided with the upper pressing member 59 that is rotatable via a bearing 119. .

Therefore, the upper pressing member 59 is rotatable with respect to the second swing member 117 and swings in the left-right direction and the front-rear direction about the hinge pins 111 and 115. It should be noted that in order to regulate the swinging range of the upper pressing member 59 in the left-right direction and the front-back direction, an elastic body such as urethane rubber is provided between the upper pressing member 59 and the end portion 101a of the arm member 101.
121 is mounted.

Next, the operation based on the configuration of the clamp device 29 described above will be described.

When the plate material W is fed to the clamp device 29, the up-down adjusting device 77 is appropriately operated so that the upper surface of the lower pressing member 61 is located below the pass line. When the central portion of the plate material W is located above the lower pressing member 61, the vertical adjusting device 77 is appropriately operated so that the upper surface of the lower pressing member 61 is located on the pass line. Then, by appropriately operating the swing cylinder 105, the upper pressing member 59 and the lower pressing member 61 cooperate to grip the plate material W.

When the clamp device 29 moves in the front-rear direction while holding the plate material W, the upper surface of the lower pressing member 61 is positioned on the pass line.

In order to rotate the plate material W while holding the plate material W, the up-down adjusting device 77 is appropriately operated so that the upper surface of the lower pressing member 61 is located above the pass line. Then, the rotation motor 87 is appropriately operated to rotate the lower pressing member 61 to a desired angle. At this time, the upper pressing member 59 is the second swing member.
Since it is rotatably supported by 117, the upper pressing member 59
It is also possible to rotate the plate member W to a desired angle by rotating integrally with the lower pressing member 61. The upper surface of the lower pressing member 61 is located above the pass line in order to avoid interference with the work table 3 due to the bending of the plate W when the plate W is rotated.

Referring again to FIG. 1, FIG. 2 and FIG. 3, a side bracket 123 is provided on the right side surface of the plate bending machine 1, and the front side of the side bracket 123 and the plate bending machine 1 are provided. On the front side of the fixed frame 9 in, a rail support member 125 is provided extending in the left-right direction from the right end of the side bracket 123 to the left end of the plate bending machine 1.

The rail support member 125 is provided with a carry-in slider 131 and a carry-out slider 133 in a plate material carry-in / carry-out device 127 that is movable in the left-right direction, in other words, from the carry-in side to the carry-out side of the plate material bending machine 1.

More specifically, the rail support member 125 is provided with two rails 129 extending in the left-right direction so as to face each other in the vertical direction, and a carry-in slider 131 and a carry-out slider 133 are provided on the rail.
It is provided so that it can be moved in the left-right direction by being guided by 129. Here, the piston rod 137, which is capable of protruding rightward from the cylinder 135 provided on the carry-out slide 133, is
31 It is connected to the left end.

In order to move the carry-in slider 131 and the carry-out slider 133 in the left-right direction, the rail support member 125 is formed with a pinion groove 139 extending in the left-right direction as shown in FIG. A rack member 141 extending in the left-right direction is provided on the upper side. A pinion 143 is rotatably supported at an appropriate position of the carry-in slider 131 so as to mesh with the rack member 141. The pinion 143 is interlockingly connected to the rotation shaft of a loading / unloading motor 145 mounted on the loading slider 131 via a drive pulley 147, a driven pulley 149, and a belt 151. In order to detect the position of the carry-in slider 131, the motor 147 is provided with a carry-in / carry-out encoder (not shown).

With the above structure, the carry-in / carry-out motor 145 is appropriately operated to move the carry-in slider 131 and the carry-out slider 133 between the carry-in side and the carry-out side of the plate material bending machine 1.

Since the plate material W is gripped and moved from the carry-in side of the plate material bending machine 1 onto the work table, the clamp device 1 is provided at both ends of the clamp base 153 provided on the carry-in slider 131.
55 is provided. In this embodiment, two left and right clamp devices 155 are fixedly provided, but the clamp device 155 is movable in the left and right direction in order to hold the plate W at an appropriate position according to the length of the plate W. Modifications such as providing or appropriately providing a suitable number of clamping devices 155 are possible.

In order to position the plate material W, the rail support member 12
A positioning pin 157 is provided at an appropriate position of 5, and a reference pin 159 is provided at an appropriate position of the carry-in table 5. The positioning pin 157 is provided so as to be vertically movable via a cylinder 161.

With the above configuration, the plate material W on the carry-in table 5 is pushed rearward by the pusher (not shown) to be brought into contact with the positioning pin 157 and the reference pin 159, and at the same time, the end portion of the plate material W is grasped by the clamp device 155. It At this time, since the carry-in / carry-out encoder is provided, the carry-in slider 131
The plate W can be gripped by controlling the movement in the left and right directions so that the center of the clamp base 153 and the center of the plate W coincide with each other.

Therefore, the plate material W gripped by the clamp device 155 moves the carry-in slider 131 to the left,
It is possible to move the plate W from the loading side to the work table 3. At this time, the positioning pin
Since 157 can move up and down, it does not interfere with the clamp device 155.

In order to push out the plate material W processed by the plate material bending machine 1 from the work table 3 to the carry-out side of the plate material bending machine 1, the carry-out slider 131 is provided with a plate material carry-out device 163.

More specifically, the carry-out slider 133 is provided with a carry-out base 165, and the support member 167 provided on the carry-out base 165 has a pushing arm 169 rotatably supported. The unloading base 165 is used to rotate the pushing arm 169.
A rotary cylinder 171 is provided in the rotary cylinder 171 and a piston rod 173 that can project leftward from the rotary cylinder 171 is connected to a rotary shaft of a pushing arm 169 via a cam mechanism 175.

With the above configuration, by appropriately operating the rotating cylinder 171, the pushing arm 169 rotates between the horizontal position and the vertical position. Therefore, when the carry-out slider 133 moves on the front side of the plate bending machine 1, by keeping the pushing arm 169 in the horizontal position, the work table 3
The processed plate material W can be extruded to the unloading side.

A motor may be provided in place of the cam mechanism 175 in the plate material discharging device 163 to rotate the pushing arm 169.

The operation will be described based on the configuration of this embodiment described above.

The plate W on the carry-in table 5 is positioned and the clamp device 155 grips the end of the plate W (the short side of the straight side in this embodiment).

Next, while keeping the pushing arm 169 in a vertical state, appropriately operate the loading / unloading motor 145 and the loading / unloading encoder,
The carry-in slider 131 and the carry-out slider 133 are moved to the left until the push-out arm 169 crosses the left end of the carry-in table 5. Then, the rotating cylinder 171 is appropriately operated to rotate the pushing arm 169 until it becomes horizontal.

By appropriately operating the carry-in / carry-out motor 145 and the carry-in / carry-out encoder, the carry-in slider 131 and the carry-out slider 133 are moved to the left until the center of the plate material W gripped by the clamp device 155 is located between the work tables 3a and 3b. Move in the direction.
At this time, the plate material W already processed by the plate material bending machine 1 is extruded by the extrusion arm 169 to the belt conveyor 7 on the unloading side, and at the same time, the plate material W grasped by the clamp device 155 is processed by the plate material bending machine. It is carried in 1.

The carriage 31 is moved rearward by appropriately operating the motor 47 and the clamp encoder, and the swing cylinder 105
Is appropriately operated to grip the central portion of the plate material W by the clamp device 29. Next, the gripping state of the clamp device 155 is released, and the cylinder 161 is appropriately operated so that the pushing arm 169 has the work table 3a on the left side. The carry-out slider 133 is moved leftward to a position beyond the left end portion of the. Therefore, the rotating cylinder 171 is appropriately operated to rotate the pushing arm 167 until the vertical state is reached, and the loading / unloading motor 1 is moved.
45 is appropriately operated to carry in the slider 131 and carry out the slider 133.
To the loading side.

In order to bend the end portion (the short side end portion in this embodiment) of the plate material W gripped by the clamp device 29, the clamp device 29 is appropriately operated to rotate the plate material W by 90 °. Then, the bending machine 1 processes the short side end portion of the plate material. In order to bend another short side end of the same plate material W, the clamp device 29 is appropriately operated to rotate the plate material W by 180 °, and the plate material W is bent. Similarly, when the long side end of the plate W is bent, the clamp device 29 is appropriately operated.

In the above-described structure, according to the present embodiment, it is not necessary to use a turntable, and by appropriately operating the plate material bending machine 1 together with the clamp device 29, the same plate material W can be obtained.
It is possible to bend at a plurality of points. Since it is not necessary to use a turntable, it is possible to effectively use the factory space, and it is possible to eliminate the idle time required for the clamp device 29 to move between the plate material processing position and the turntable.

Since the carry-in slider 131 is provided with the clamp device 155 and the carry-out slider 133 is provided with the pushing arm 169, the plate material W is
The plate material W can be always placed on the work table 3 by carrying in and out at the same time, and the time when the plate material W cannot be bent and the yield time can be reduced.

It should be noted that the present invention is not limited to the above-described embodiment, but can be implemented in various other modes by making appropriate changes.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention is characterized in that the plate material processing machine is mounted on the carriage (31) provided in front of the plate material processing machine (1) so as to be movable in the front-back direction. A plate member (W) placed on a work table (3) provided on the front side of (1) can be supported from below and a lower pressing member (61) can be horizontally rotated and can be mounted on the upper surface of the work table (3). The arm part (101) of the carriage (31) provided so as to be retractable from and to the upper side and above the lower pressing member (61).
An upper pressing member (59), which is capable of pressing the upper surface of the plate (W), is provided at the tip end of the plate so as to face the lower pressing member (61) and to be swingable in the front-rear and left-right directions and horizontally rotatable. It is a thing.

As is apparent from the above-described configuration, in the present invention, the lower pressing member 61 provided on the carriage 31 which is movable in the front-back direction with respect to the plate material processing machine 1 appears and disappears on the upper surface of the work table 3 supporting the plate material W. The lower pressing member 61 is free.
The upper pressing member 59 provided so as to oppose to each other is swingably movable in the front-rear and left-right directions and horizontally rotatable, so that the carriage 31 corresponding to the size of the plate material W gripped by the upper and lower pressing members 59 and 61. The plate material W can be horizontally rotated at a position appropriately separated from the plate material processing machine 1, and the tact time can be shortened to improve the work efficiency.

Further, by projecting the lower pressing member 61 from the upper surface of the work table, the plate material can be rotated without interfering with the work table.

Further, since the upper pressing member 59 is swingable in the front-rear and left-right directions, it is possible to deal with the case where the upper and lower pressing members 59 and 61 are slightly deviated from each other in rotational center.

[Brief description of drawings]

FIG. 1 is a plan view of the device according to this embodiment. FIG. 2 is a front view of the device according to this embodiment. FIG. 3 is a side view of the device according to this embodiment. FIG. 4 is an enlarged view of the clamp device. FIG. 5 is an enlarged view of the clamp device. 1 ... Plate bending machine, 29 ... Clamping device 55 ... Upper grip, 57 ... Lower grip

Claims (1)

[Scope of utility model registration request] 1. A carriage (31) provided on the front side of the plate material processing machine (1) so as to be movable in the front-rear direction, and mounted on a work table (3) provided on the front side of the plate material processing machine (1). A lower pressing member (61) that can support the plate material (W) from below is provided so as to be horizontally rotatable and retractable with respect to the upper surface of the work table (3), and above the lower pressing member (61). The arm part (101) of the provided carriage (31)
An upper pressing member (59), which is capable of pressing the upper surface of the plate (W), is provided at the tip end of the plate so as to face the lower pressing member (61) and to be swingable in the front-rear and left-right directions and horizontally rotatable. A clamping device in a plate material processing machine characterized by the above.