JPS6299043A - Pallet for holdingly moving workpiece - Google Patents

Abstract

PURPOSE:To expand the moving range of a pallet by using a spring for the clamping force of a clamp device while providing a quick coupling having a check valve which is connectable to said pallet, along a guide rail, and adjusting pressure to release and clamp said clamp device of a pallet, via said coupling. CONSTITUTION:Plural clamp devices 14 which use springs for their clamping force, are provided on a pallet 2 which is moved along a guide rail 1 while holding a workpiece 7. Piping for an unclamping cylinder is introduced to a quick coupling 8 having a check valve. A quick coupling 9a having a check valve is provided connectably to the quick coupling 8 of the pallet 2, along the guide rail 1 and in a position for positioning the pallet 2. And, both of these quick couplings 8, 9a are connected to each other, and the workpiece 7 is mounted under an unclamped condition due to the hydraulic pressure of a hydraulic source and, then, is clamped due to the reduced pressure of the hydraulic source, to carry out machining. Then, the pallet 2 is moved along the rail 1 and stopped in the position of another quick coupling 9b and unclamped.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a pallet for holding a workpiece, which can be moved on a guide and positioned at an arbitrary position, and in particular, relates to a pallet for holding a workpiece, which can be moved on a guide and positioned at an arbitrary position, and in particular, a pallet for holding a workpiece by a single drive source. The present invention relates to a workpiece moving and holding pallet suitable for

[Background of the invention]

Conventional pallets have a screw for each clamp.

Some are known that are rotated from the outside to perform clamping, and the driving device is removed from the pallet during movement, and others that perform clamping using hydraulic pressure and unclamping using springs.

However, the former requires separate drive devices when the sizes of the workpieces to be clamped are different. On the other hand, in the case of the latter, if it is necessary to clamp the pallet during movement, the hose that guides hydraulic pressure to the pallet must be moved together with the pallet, which limits the range of movement.

Note that related pallets of this type include, for example, Japanese Utility Model Application No. 58-128841.

[Purpose of the invention]

The object of the present invention relates to a pallet equipped with a plurality of workpiece clamps, and in particular, the clamps can be operated by one detachable drive source, and the workpieces can be moved to any position while moving on a guide. The purpose is to provide a holding pallet.

[Summary of the invention]

In the present invention, a screw and a cylinder are installed at one end of the link that clamps the workpiece, and the workpiece is clamped by pushing the piston with a spring, and the unclamping is moved to an arbitrary position on the guide and attached to and detached from the positioned pallet. A freely provided quick joint with a check valve is connected, and the piston is moved toward the spring side by hydraulic pressure to unclamp it.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

A pallet 2 that can be moved and positioned at any position on a guide 1 by a drive device (not shown), and a plurality of reference blocks 3 necessary for positioning workpieces are formed on this pallet 2. This reference block 3 includes a plurality of clamp devices 1.
A cylinder block 4 and a rod of a piston 5 installed inside the cylinder block 4 are connected to a clamp lever 6 to clamp a workpiece 7 to the reference block 3 by a link mechanism. Also, one quick joint 8 with a check valve is provided at one end of the pallet 2, and the quick joint 8 with a check valve is provided along one end of the pallet 2 positioned on the guide 1. The joint 8 is a removable quick joint 9 with a check valve provided in the required number at positions for positioning the pallets 1-2.

This quick joint 9 with a check valve is detachable from the quick joint 8 with a check valve by a drive device (not shown).

Next, a series of operations will be explained.

A pallet 2 with no work clamped thereon is positioned at an arbitrary position on the guide 1 by a drive device (not shown). Here, the quick joint 8 with a check valve provided at one end of the pallet 2 and the quick joint 9 with a check valve provided along the guide 1 are connected by a drive device (not shown), and when the valve 10 is actuated, the hydraulic pressure is applied to the cylinder block 4. , the piston 5 is moved and the spring 11 is compressed, and at the same time the clamp lever 6 is moved.
Pull to complete unclamping.

When the necessary workpiece 7 is pressed against the reference block 3 by a supply device (not shown) and the valve 10 is actuated, the oil pressure stops and the oil in the cylinder block 4 is transferred to the spring 11.
be pushed back. The workpiece 7 is clamped by the clamp lever 6, and clamping is completed. In this state, perform the required workpiece processing (for example, screw tightening, welding 9 machining), and after the processing is completed, the quick joints 8 and 9 with check valves are removed, and the pallet 2 holding the workpiece 7 clamped is moved to the next position. I'm trying to move it to. Further, the cylinder block 4 of the clamp device 14 is provided with a flow rate adjustment valve 15 to adjust the amount of oil flowing.

As explained above, according to this embodiment, no matter how many clamp devices 14 are on the pallet 2, the clamp device 14 can be operated with just one quick joint 8 with a check valve, so it is inexpensive. .

Furthermore, regarding the operation timing of the clamp device 14,
Multiple clamp devices 1 can be installed by simply adjusting the flow ignition regulating valve 15.
It is possible to synchronize and desynchronize the lamp device 14 as required.

〔Effect of the invention〕

According to the present invention, by detachably disposing a quick joint with a check valve along one end of the pallet and a guide for moving the pallet, it is possible to clamp and unclamp a workpiece at any position, and the clamp drive source can be used. There is no need to move the pallet while connected to it, and the pallet can be moved within a wider range.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view of a clamp device, and FIG. 3 is a hydraulic circuit diagram. 1... Guide, 2... Pallet, 3... Reference block, 4... Cylinder block, 5... Piston,
6...Clamp lever-57...Work, 8,9...
・Quick joint with check valve, 10...Valve, 11...Spring, 14...Clamp device, 15...Flow rate adjustment valve.

Claims (1)

[Claims] 1. A reference block that determines the position of a workpiece, a plurality of clamp devices that position and hold the workpiece on this reference block, and a pallet that supports the reference block and clamp devices and can be moved on a guide and positioned at any position, A spring is used for the clamping force of the clamp device, and a pallet positioned along the rail and a removable quick joint with a check valve are arranged, and the plurality of clamp devices are unloaded via the quick joint with a check valve. A workpiece moving and holding pallet characterized in that clamping is performed by one common driving source.