JP2000117370A - Clamp positioner device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability and reliability without using any hydraulic unit, to reduce the weight by simplifying the structure, and to give the degree of freedom in the number of clamps. SOLUTION: A clamp positioner device is provided with an elevating/lowering air cylinder 51 as a second drive device 49 to vertically move an arm opening/ closing device 61 provided with arms 63A, 63B to hold a clamp body 31 of a work clamp device 27 in a suspended manner from a portal frame 3, an arm opening/closing air cylinder 69 which is a first drive device 67 to open/close the arms 63A, 63B of the arm opening/closing device 61, and a clamp lever operation air cylinder 79 which is a third drive device 77 to turn a rod 81 provided with an engagement part 83 to be engaged/disengaged with/from the clamp lever 37 provided on the clamp body 31 in a longitudinal direction. The durability and reliability are improved without using any hydraulic unit, and the weight and the cost are reduced by simplifying the structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp positioner device for positioning a work clamp device for clamping a work.

[0002]

2. Description of the Related Art Conventionally, for example, in a punch press or a laser beam machine, a clamp positioner device is employed as a device for changing a position of a work clamp device with respect to a carriage according to a change in work size.

[0003] The clamp positioner device disclosed in Japanese Utility Model Publication No. 2-37348 is known. That is, as shown in FIG. 8, the carriage base 101 is screwed into a Y-axis ball screw 103 extending in the Y-axis direction (the left-right direction in FIG. 8). A Y-axis drive motor 105 is provided. The carriage base 101 is provided with a plurality of linear guide rails 107 extending in the X-axis direction (a direction orthogonal to the drawing in FIG. 8). Are provided movably in the X-axis direction.

[0006] An X-axis ball screw 113 extending in the X-axis direction is screwed into the carriage 111, and an X-axis drive motor (not shown) is provided at one end of the X-axis ball screw 113.

The carriage 111 has a guide member 11.
The guide member 115 is provided with a tapered sliding contact surface 117 formed in the vertical direction, and the clamp body 121 of the work clamp device 119 is engaged with the sliding contact surface 117, so that the sliding contact surface 117 is provided. Above 117, a clamp lock member 123 is provided movably in the vertical direction.

The clamp positioner device 125 is provided with a catcher 127 having a locking portion 127A at the upper rear end of the clamp body 121. The catcher 127 has a built-in hydraulically operated fluid cylinder 129. Toggle links 133A and 133B are connected to the front end of the front piston rod 131. In addition,
One end of the toggle link 133A is connected to the catcher 127, and one end of the toggle link 133B is connected to the clamp lock member 123.

A pressing member 137 is provided at the tip of the rear piston rod 135 of the fluid cylinder 129, and a clamp bar 139 having a contact portion 139A with which the pressing member 137 comes into contact is provided on the upper surface of the carriage base 101. It is provided to extend in the X-axis direction to the same width as the carriage base 101.

With the above configuration, the work clamping device 11
9 is fixed to the carriage 111, the fluid cylinder 1
When the front piston rod 131 is moved forward by operating 29, the clamp lock member 123 is lowered via the toggle links 133A and 133B. Then, the clamp body 121 is fixed to the carriage 111 by engaging with the sliding contact surface 117 of the guide member 115 provided on the carriage 111.

The work clamp device 119 is mounted on the carriage 1
When the hydraulic cylinder 129 is released from the state 11, when the fluid cylinder 129 is operated and the rear piston rod 135 is moved rearward, the toggle links 133A and 133B connected to the front piston rod 131 are bent. Toggle link 1
The clamp lock member 123 connected to 33 </ b> B rises, is separated from the sliding contact surface 117 of the guide member 115 provided on the carriage 111, and the fixing is released.

Further, when the rear piston rod 135 moves rearward, a pressing member 137 provided at the tip of the rear piston rod 135 presses a clamp bar 139 provided on the carriage base 101. Further, the fluid cylinder 129
Is activated, the clamp body 121 and the catcher 127 are actuated.
Moves in the Y-axis direction, the locking portion 127A provided on the catcher 127 abuts on the clamp bar 139, and the clamp body 121 is fixed to the carriage base 101.

When the carriage 111 is moved in the X-axis direction in the state described above, the mounting position of the clamp body 121 with respect to the carriage 111 can be freely changed.

A clamp positioner device disclosed in Japanese Patent Publication No. 59-40583 is also known.
This clamp positioner device also has substantially the same configuration as the above-described clamp positioner device 125, and changes the mounting position of the clamp with respect to the carriage. In order to fix the clamp to the carriage similarly to the clamp positioner device 125 having the above-described configuration, a clamp is used. Has a fluid cylinder.

Further, as a clamp positioner device having a similar configuration, a configuration described in US Pat. No. 4,523,749 is known.

[0014]

By the way, in the above-described conventional clamp positioner device, the actual position is 2-37334.
No. 8, JP-B-59-40583, U.S. Pat.
In the configuration described in Japanese Patent No. 3,749, there is a problem that the clamp is large and heavy due to the complicated structure. In addition, since hydraulic pressure is used for the fluid cylinder, malfunctions are likely to occur due to the influence of changes in oil viscosity due to changes in temperature, and hose damage and the like occur as troubles related to the hydraulic hose and its piping.

Further, the number of clamps is limited to two due to restrictions of the hydraulic system and the like, and the clamps also require special clamps.

SUMMARY OF THE INVENTION An object of the present invention is to provide a clamp positioner device which improves durability and reliability without using a hydraulic pressure, and which is simplified in structure to reduce the weight and to provide a freedom in the number of clamps. It is in.

[0017]

According to a first aspect of the present invention, there is provided a clamp positioner device comprising a plurality of arms for holding a clamp body of a work clamp device from both sides and facing each other. An arm opening / closing device for simultaneously expanding and contracting outwardly is provided movably in the vertical direction, and one of the arms in the arm opening / closing device is used to clamp and unclam the clamp block provided on the work clamp body to the carriage. A turning member is provided for engaging and turning the clamp lever connected to the clamp block.

According to a second aspect of the present invention, there is provided a clamp positioner device comprising an arm opening / closing device having a plurality of arms opposed to each other for clamping a clamp body of a work clamping device from both sides. A first drive device for simultaneously expanding and contracting the arm in and out is provided on the support member, and a second drive device for moving the support member in the vertical direction is provided on the frame of the plate material processing machine; and a clamp block provided on the work clamp body. A clamp lever connected to the clamp block for clamping and unclamping the carriage, and a third driving device for rotating the revolving member that can be engaged with and disengaged from the clamp lever is provided in any one of the arms in the arm opening and closing device. It is characterized in that it is provided on one of them.

Therefore, when the clamp position is changed by providing the clamp positioner device, the carriage is moved so that the clamp body of the work clamp device comes to the position of the clamp positioner device. And
By operating the first, second and third driving devices, the clamp lever provided in the work clamp device is moved, and only the carriage is moved while the clamp body is held by the arm of the arm opening / closing device provided in the clamp positioner device. To change the clamp position.

Thus, the standard clamp (manual clamp) can be used as it is, the number of clamps is flexible, the structure is simple and light, the cost is reduced, and the durability and reliability are improved.

According to a third aspect of the present invention, there is provided a clamp positioner device according to the first or second aspect, wherein the first, second and third driving devices are constituted by air cylinders. It is characterized by the following.

Therefore, since no hydraulic pressure is used, there is no trouble such as damage to the hose or the influence of oil viscosity, and good maintenance is possible.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings. The turret punch press will be described as an object, but the present invention is not limited to this model. The turret punch press has a known configuration, and thus detailed illustration and description are omitted.

Referring to FIGS. 5 and 6, the turret punch press 1 is provided with an upper turret 5 inside a portal frame 3 and a lower turret (not shown) at a lower portion facing the upper turret 5. , And are rotatably mounted in synchronization. A number of upper dies P are mounted on the upper turret 5, and a number of lower dies (not shown) are mounted on the lower turret in opposition to the upper dies.

The upper mold P is hit by the vertical movement of a ram (not shown) provided on the upper part of the portal frame 3, and the work W is punched by cooperation with the upper and lower molds. Reference numeral 7 denotes a punching position.

A fixed table 9 is provided in the portal frame 3 adjacent to the lower turret, and movable tables 11 are provided on both sides of the fixed table 9. The carriage base 1 which constitutes the work transfer device 13 in such a manner as to straddle the fixed table integrally with the movable table 11
5 are provided. The carriage base 15 is provided so as to extend in the X-axis direction (the vertical direction in FIG. 5 and the direction orthogonal to the drawing in FIG. 6), and is provided in the Y-axis direction (FIGS. 5 and 6).
The ball screw 17 extends in the left-right direction (see FIG. 1), and a Y-axis drive motor 19 is connected to one end of the ball screw 17.

A carriage 21 is mounted on the carriage base 15 so as to be movable in the X-axis direction. That is, the carriage base 15 is provided with a ball screw 23 extending in the X-axis direction. The carriage 21 is screwed to the ball screw 23 via a nut member (not shown). Is connected to an X-axis drive motor 25. The carriage 21 is provided with a plurality of work clamping devices 27 that can freely grip one side edge of the plate-shaped work W.

With the above arrangement, the X-axis drive motor 25 is driven to rotate the ball screw 23 to move the carriage 21 in the X-axis direction, and the Y-axis drive motor 19 is driven to rotate the ball screw 17 to rotate the carriage. By moving the base 15 in the Y-axis direction, the work W gripped by the work clamp device 27 is positioned at the punching position 7, and desired punching is performed.

The work clamp device 27 will be described in more detail. Referring to FIG.
Work clamp device 2 into the inverted trapezoidal dovetail groove 29
7, a clamp block member 33 is provided above the dovetail groove 29 so as to be vertically movable. The clamp block member 33 is screwed with a screw rod 35 extending in the vertical direction to the clamp body 31, a clamp lever 37 is attached to the upper end of the screw rod 35, and a pin 39 is provided on the top surface of the distal end of the clamp lever 37. .

With the above configuration, the screw rod 35 is rotated by rotating the clamp lever 37, the clamp block member 33 is moved up and down, and the clamp body 31 can be fixed to the carriage 21 or can be released. .

The clamp body 31 is provided with a fixed lower jaw 41 and a rotatable upper jaw 43 above the lower jaw 41. The upper jaw 43 rotates to cooperate with the lower jaw 41. One side edge of the work W can be clamped or unclamped. Also,
On both side surfaces of the clamp main body 31, hook grooves 47 are formed in which arms (not shown) of a clamp positioner device 45 provided on an upper lower surface of the portal frame 3 of the turret punch press 1 are fitted. The work clamp device 27 is provided with an origin detecting and position recognizing means as in the prior art.

Next, the clamp positioner device 45 which is a main part of the present invention will be described in detail.

Referring to FIGS. 1 and 2, an elevating / lowering air cylinder 51 is provided as a second driving device 49 on the upper and lower surface of the portal frame 3 so as to hang down. Support member 5 at the tip
5 are connected. The support member 51 is guided by a plurality of guide bars 57 provided on both sides and can move up and down.

Linear guides 59 are provided on both sides of the lower surface of the support member 55. The U-shaped arm opening / closing device 61 which is guided by the linear guides 59 and is movable in the X-axis direction (the left-right direction in FIG. 1). Arms 63A and 63B are provided so as to hang down in opposition to each other. And arm 6
Hook portions 65 that fit into the catch grooves 47 formed on both side surfaces of the clamp main body 31 are formed at opposite ends of 3A and 63B.

Further, the arms 63A and 63B are opened and closed by a double shaft type arm opening / closing air cylinder 69 as a first driving device 67 provided at the center of the lower surface of the support member 55.
Arm 63 to piston rod 71A, 71B provided in
A and 63B are connected.

A bracket 73 is protruded from one of the arms 63A and 63B, for example, the arm 63A, and a rear side of a clamp lever operating air cylinder 79 is connected to the bracket 73 via a pin 75 as a third driving device 77. It is provided so that it can turn. The clamp lever 37 is attached to the tip of a rod 81 as a turning member provided on the clamp lever operating air cylinder 79.
Of the pin 39 provided on the shaft, and a cylindrical engaging portion 8 which is detachable.
3 are provided integrally.

With the configuration as described above, the operation is as shown in FIGS. 3 and 4. First, as shown in FIG. 3, the clamp body 31 of the moved work clamp device 37 is moved to the clamp positioner device. Move it so that it is directly under 45. Since the position of the clamp positioner device 45 is fixed, the position can be adjusted by giving a command in a program.

When the clamp body 31 comes directly below the clamp positioner device 45, the arm opening / closing device 61 with the arms 63A and 63B open is lowered by the operation of the lifting / lowering air cylinder 51, and as shown in FIG. An engaging portion 83 provided at the tip of the clamp lever operating air cylinder 79 is connected to a pin 39 provided on the clamp lever 37.

Then, the rod 81 of the air cylinder 79 for operating the clamp lever is retracted, and the clamp lever 37 is retracted.
Is pivoted to unlock the clamp, and the arm 63 is actuated by the operation of the arm opening / closing air cylinder 69.
A and 63B are closed, and the hook portions 65 of the arms 63A and 63B are fitted into the catch grooves 47 provided in the clamp body 31.

Next, with the clamp body 31 held by the clamp positioner device 45, the carriage 21 is moved to X position.
The position of the work clamp device 27 is changed by moving the clamp position in the axial direction by an amount to be moved.

Then, the clamp body 31 is locked to the carriage 21 by the operation of the clamp lever operating air cylinder 79 in the reverse order to the above, and the clamp positioner device 45 releases the clamp and moves up.

As described above, when the position of the clamp body 31 is changed, the carriage 21 is moved so that the clamp body 31 comes to the position of the clamp positioner device 45, and the clamp body 31 is held by the clamp positioner device 45. The clamp position is changed by moving only the carriage 21.

Thus, the work clamp device can be reduced in weight and cost can be reduced with a simple configuration, and the standard clamp (manual clamp) can be used as it is, so that the number of clamps is flexible. Further, since no hydraulic pressure is used, there is no trouble such as hose damage or influence of oil viscosity, and maintenance is good.

The present invention is not limited to the above-described embodiment of the present invention, but can be embodied in other forms by making appropriate changes.

[0045]

As will be understood from the above description of the embodiments of the present invention, according to the present invention according to the first or second aspect, by providing the clamp positioner device, when the clamp position is changed, the work position is changed. The carriage is moved so that the clamp body of the clamp device is at the position of the clamp positioner device. Then, the clamp lever provided on the work clamp device is moved by the operation of the first, second, and third drive devices, and only the carriage is held while the clamp body is held by the arm of the arm opening / closing device provided on the clamp positioner device. Change the clamp position by moving.

Thus, the standard clamper (manual clamp) can be used as it is, the degree of freedom of the number of clamps can be increased, the structure can be simplified, the weight can be reduced, the cost can be reduced, and the durability and reliability can be improved. .

According to the third aspect of the present invention,
Since no hydraulic pressure is used, there is no trouble such as damage to the hose or the effect of oil viscosity, and good maintainability.

[Brief description of the drawings]

FIG. 1 is an explanatory front view of a clamp positioner device, showing a main part of the present invention.

FIG. 2 is an explanatory sectional view taken along line II-II in FIG.

FIG. 3 is an operation explanatory view.

FIG. 4 is an operation explanatory view.

FIG. 5 shows an embodiment of the present invention,
It is a plane explanatory view showing the schematic structure of a turret punch press.

FIG. 6 is an enlarged explanatory side view taken along the line VI-VI in FIG. 5;

FIG. 7 is an explanatory perspective view of a work clamp device.

FIG. 8 is an explanatory side view of a clamp positioner device, showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 turret punch press (plate processing machine) 3 portal frame 21 carriage 27 work clamp device 31 clamp body 33 clamp block 37 clamp lever 45 clamp positioner device 49 second drive device 51 lifting / lowering air cylinder 55 support member 61 arm opening / closing device 63A, 63B Arm 67 First driving device 69 Arm opening / closing air cylinder 77 Third driving device 79 Clamp lever operating air cylinder 81 Rod (turning member) 83 Engagement part (turning member) W Work

Claims (3)

[Claims] An arm opening / closing device which is provided with a plurality of arms opposed to each other to clamp a clamp body of a work clamping device from both sides, and which is capable of simultaneously expanding and contracting in and out; One of the arms of the device is provided with a turning member that engages with a clamp lever connected to the clamp block to turn and clamp the clamp block provided on the work clamp main body to the carriage so that the clamp block is unclamped. A clamp positioner device, characterized in that: 2. A first driving device for providing an arm opening / closing device having a plurality of arms opposed to each other for holding a clamp body of a work clamping device from both sides, and for simultaneously expanding and contracting each arm of the arm opening / closing device in and out. Is provided on the supporting member, and the second member for moving the supporting member in the vertical direction is provided.
A driving device is provided on the frame of the plate material processing machine, and a clamp lever connected to the clamp block is provided for clamping and unclamping the clamp block provided on the work clamp body to the carriage, and is capable of engaging and disengaging with the clamp lever. 3rd to make the turning member easy to turn
A clamp positioner device, wherein a driving device is provided on one of the arms in the arm opening / closing device. 3. The first, second, and third driving devices,
3. The clamp positioner device according to claim 1, wherein the clamp positioner device is constituted by an air cylinder.