jig

Abstract

This invention provides a fixture suitable for positioning a workpiece in a heat sink cover pressing process. It includes a mold base unit, a module disposed on the mold base unit, and a fixing member for securing the module to the mold base unit. The module is suitable for supporting the workpiece. The fixing member has a channel for gas flow. The gas is suitable for positioning the workpiece on the module. This invention innovatively integrates the gas extraction channel into the fixing member. Furthermore, when the fixing member is positioned in the center of the module, it can improve or prevent a bulge in the central portion of the module.

Claims

1. A fixture for positioning a workpiece in a heat sink cover pressing process, comprising: a mold base unit; a module disposed on the mold base unit and adapted to support the workpiece; and a fixing member for fixing the module to the mold base unit; characterized in that: the fixing member is provided with a channel for gas flow, and the gas is adapted to position the workpiece on the module.

2. The fixture as described in claim 1, wherein, The gas is under negative pressure created by evacuation.

3. The fixture as described in claim 1, wherein, The module has a working surface suitable for supporting the workpiece, and a first insertion hole through the working surface for the fastener to be inserted. The channel of the fastener includes a first opening that can form a negative pressure on the working surface.

4. The fixture as described in claim 3, wherein, The mold base unit is provided with a second insertion hole for inserting the fixing member and communicating with the first insertion hole, and an air passage communicating with the second insertion hole and spaced apart from the fixing member. The air passage is communicating with a second opening opposite to the first opening of the passage, and allows the gas to be extracted from the passage.

5. The fixture as described in claim 4, wherein, The module unit includes a base assembly and a heat insulation component disposed on the base assembly; the base assembly defines the air passage, the heat insulation component defines the second insertion hole, and the module is disposed on the heat insulation component.

6. The fixture as described in claim 4, wherein, The mold base unit is also provided with a threaded bushing located in the second insertion hole, and the fastener is provided with a head inserted into the first insertion hole and a body inserted into the first insertion hole and screwed into the threaded bushing.

7. The fixture as described in claim 3, wherein, The fastener has a head and a body that cooperate to define the channel. The head is inserted into the module and defines the first opening. The first opening does not protrude from the first insertion hole and the working surface. The body is inserted into the module and the mold base unit.

8. The fixture as described in claim 3, wherein, The module has an air groove on the working surface that connects the first insertion hole and the first opening.

9. The fixture as described in claim 8, wherein, The air groove has several intersecting grooves, and the first insertion hole and the first opening are connected at the intersection of the grooves.

10. The fixture as claimed in claim 3, wherein the workpiece can be placed on a carrier plate having a placement area for placing the workpiece and a cutout corresponding to the placement area, wherein, The module can pass through the cutout to place the workpiece on the working surface.

11. The fixture as described in claim 1, wherein, The fastener is inserted into the central part of the module.

12. The fixture as described in claim 11, wherein, The fixture is also provided with several pressing members that press against the periphery of the module to fix the module on the mold base unit, the pressing members being spaced apart from the fixing members.

13. The fixture as described in claim 12, wherein, The module has a working surface suitable for supporting the workpiece, an opposite surface to the working surface, and several fixed surfaces located between the working surface and the opposite surface, and the pressure member presses against the fixed surfaces respectively.

Images