JPS6317628Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet for clamping workpieces, and more particularly to a pallet having a removable positioning device for positioning the workpieces in a predetermined position.

It is an object of the present invention to provide a low-cost pallet that can accommodate a wide variety of workpieces with simple replacement operations.

Pallets are generally used to transport workpieces in transfer machines, assembly machines, and the like. Conventionally, this type of pallet has a special structure adapted to support a workpiece, so if the target workpiece is changed, the entire pallet has to be replaced.

However, since pallets are heavy, replacing them is troublesome, and each pallet must be equipped with ancillary equipment such as a clamping device, resulting in high costs.

The present invention is aimed at solving these conventional drawbacks.The support unit that supports the workpiece is constructed separately from the pallet body, and by replacing this support unit, the workpiece can be changed easily and quickly. The present invention relates to a palette that is characterized by being able to cope with such problems.

Embodiments of the present invention will be described below based on the drawings. In FIGS. 1 and 2, 10 is a pallet main body, 11 is a support unit that supports the workpiece W,
Reference numeral 12 denotes a clamping device for clamping the workpiece W onto the support unit 11. This clamping device 12 has a tightening shaft 14 screwed into a threaded sleeve 13.
and a clamper 15, by rotating an engagement head 16 fixed to the upper end of the tightening shaft 14 by a nut runner device (not shown), the clamper 1
5 rotates until it comes into contact with the stop pin 16, after which the clamper 15 is moved in the axial direction by the screw action of the clamping shaft 14 to clamp the workpiece W.

In the pallet having such a structure, the present invention is characterized in that when the workpiece W is changed, the pallet body 10 and the clamp device 12 are used as they are, and only the support unit 11 is replaced. That is, a mounting hole 19 is formed in the upper surface 18 of the pallet body 10, and one of the support units 11 prepared in large numbers depending on the type of workpiece W is inserted into the mounting hole 19, for example, as shown in FIG. It is supported by being fitted into. This support unit 11
Each of them includes a block 20, a support 21, and a positioning pin 22, and the workpiece W is supported on the support 21 while being positioned by the positioning pin 22. The block 20 is
It consists of a circular block body 20a and protrusions 20b that protrude upward at three locations on the outer periphery of the block body 20a, and the support body 21 is integrally mounted on the protrusions 20b.

The block body portions 20a are all formed to have the same diameter so that they can be fitted into the mounting holes 19 of the pallet body 10 interchangeably. Further, the mounting positions of the support body 21 and the positioning pin 22 are changed depending on the workpiece W, so that it can be used with many types of workpieces W. In addition, the upper surface 23 of the block main body 20a is attached to the upper surface of the pallet main body 10 to prevent unevenness from forming on the upper surface of the pallet when the support unit 11 is attached.
The height and inclination angle are matched with the upper surface 18 of
This prevents chips from accumulating on the pallet body 10 or the blocks 20. 24 is a fixing bolt for fixing the block 20 to the pallet body 10.

When the workpiece W is changed in the pallet 10 having the above configuration, the support unit 11 can be easily removed by loosening the fixing bolt 24, and then the support unit 11 that matches the workpiece W is inserted into the mounting hole 19. By fitting the support unit 11 into the pallet body 10 and further tightening the fixing bolt 24, the support unit 11 can be integrally tightened and fixed to the pallet body 10.

As mentioned above, the pallet of the present invention replaces the support unit, which is lighter and smaller than the pallet itself, so the support unit can be replaced without having to prepare a variety of pallets depending on the type of workpiece. It has the advantage of being able to easily handle other workpieces.

Moreover, the present invention has a structure in which a support unit with positioning pins is removably fitted into a mounting hole on the pallet body, so when changing the workpiece, the currently installed support unit must first be removed.
Next, by fitting a new support unit into the mounting hole, the support unit can be accurately positioned at a predetermined position. As a result, there is no displacement of the block due to replacement of the support unit, and the positioning provided on the top surface of the block does not shift. The pin has the advantage that the workpiece can be accurately positioned in a predetermined position.

Moreover, in this support unit, the upper surface of the block body is fitted and fixed into the mounting hole so that the height and inclination angle of the upper surface of the block body match the upper surface of the pallet body, and the upper surface of the pallet body does not protrude from the upper surface of the pallet body. Only the support body and positioning pin protrude further, so the block does not become an obstacle to chip evacuation, and the support position of the workpiece is low, so the amount of overhang of the clamping device is small. It has the advantage of being able to clamp the workpiece strongly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a pallet of the present invention, and FIG. 2 is a plan view taken in the direction of the arrows in FIG. 1. W... Workpiece, 10... Pallet body, 11...
...Support unit, 12...Clamp device, 19...
...Mounting hole, 20...Block, 21...Support,
22...Positioning pin.

Claims (1)

[Scope of utility model registration request] In a pallet on which workpieces are placed on the upper surface and transported, a clamping device is provided on the pallet body of the pallet, and a mounting hole for positioning is provided near the clamping device. A support unit consisting of a positioning pin attached to the top surface of the block and a support body is removably fitted and fixed with the block main body constituting the block matching the height and inclination angle of the top surface of the pallet main body. A pallet featuring a removable positioning device.