CN219861532U - Clamping jig and clamping jig module - Google Patents

Abstract

The utility model discloses a clamping jig. The clamping jig comprises a lower cover plate, a square through part, an upper cover plate and a locking assembly; the edge of the lower cover plate is used for abutting against the inner side of the workpiece to position the workpiece inner support, and the lower cover plate is provided with an assembly hole; the square through is connected with the lower cover plate and provided with a through hole, the through hole is communicated with the assembly hole, and the through hole is used for enabling the clamping jig to be sleeved on the string rod; the upper cover plate and the lower cover plate are oppositely arranged, a connecting hole is formed in the upper cover plate, the connecting hole is sleeved on the square through, and the edge of the upper cover plate is used for abutting against the inner side of the workpiece to support and position the workpiece; the locking assembly is connected to the upper cover plate and the lower cover plate and used for locking the upper cover plate and the lower cover plate to clamp the workpiece. The clamping jig is used for carrying out internal bracing and positioning on the workpiece, and can avoid damage to the workpiece or pollution to the cleanliness of the highlight mirror surface when clamping the workpiece. The utility model also discloses a clamping jig module comprising the clamping jig.

Description

Clamping jig and clamping jig module

Technical Field

The utility model relates to a workpiece clamping device, in particular to a clamping jig and a clamping jig module.

Background

During workpiece processing, the surface of the workpiece is typically vacuum coated using physical vapor deposition (Physical Vapor Deposition, PVD) techniques. However, when the surface of the workpiece is a mirror surface, the mirror surface of the workpiece cannot be stained, imprinted or scratched during clamping of the workpiece, and therefore, there is a need to design a jig capable of clamping the workpiece without damaging the mirror surface.

Disclosure of Invention

In view of the foregoing, it is necessary to provide a clamping fixture that does not damage the mirror surface of the workpiece while meeting the requirements for clamping the workpiece.

The embodiment of the utility model provides a clamping jig which comprises a lower cover plate, a square through, an upper cover plate and a locking assembly; the edge of the lower cover plate is used for abutting against the inner side of the workpiece and supporting and positioning the lower edge of the workpiece, and the lower cover plate is provided with an assembly hole; the square tube is connected to the lower cover plate, a through hole is formed in the square tube, the through hole is communicated with the assembly hole, and a string rod is inserted into the through hole so that the clamping jig is fixed on the string rod; the upper cover plate and the lower cover plate are oppositely arranged, a connecting hole is formed in the upper cover plate, the connecting hole is sleeved on the square tube, and the edge of the upper cover plate is used for abutting against the inner side of the workpiece to support and position the upper edge of the workpiece; the locking assembly is connected to the upper cover plate and the lower cover plate and used for locking the upper cover plate and the lower cover plate so as to clamp the workpiece.

According to the clamping jig, when the upper cover plate and the lower cover plate clamp a workpiece, the edges of the upper cover plate and the lower cover plate are abutted against the inner side of the workpiece, so that the workpiece is internally supported and positioned. Because the upper cover plate and the lower cover plate are used for carrying out internal bracing and positioning on the workpiece, the upper cover plate and the lower cover plate cannot touch the workpiece in the workpiece clamping process, and dirt, marks or damage to a mirror surface part on the workpiece are avoided.

In some embodiments, the lower cover plate is provided with a protruding portion in a protruding manner, the protruding portion is located on one side facing the upper cover plate, and the protruding portion is used for abutting against the workpiece to position the workpiece.

In some embodiments, the clamping fixture further comprises an elastic piece, wherein the elastic piece is arranged on the upper cover plate or the lower cover plate, and the elastic piece is used for abutting against the workpiece to be electrically connected with the workpiece.

In some embodiments, the spring comprises a connector, a transition portion, and an abutment portion; the connector is connected with the upper cover plate or the lower cover plate; one end of the transition part is connected with the connecting body, and the other end of the transition part extends to a direction away from the upper cover plate; one end of the abutting part is connected with the other end of the transition part, and the other end of the abutting part is used for abutting against the workpiece.

In some embodiments, the locking assembly comprises a connecting piece and a fixing piece, one end of the connecting piece is abutted against one side of the upper cover plate, which is away from the lower cover plate, and the other end of the connecting piece penetrates through the upper cover plate and the lower cover plate; the fixing piece is connected to the connecting piece, the fixing piece is abutted to one side, away from the upper cover plate, of the lower cover plate, and the fixing piece is used for fixing the upper cover plate and the lower cover plate.

In some embodiments, the upper cover plate and the lower cover plate are provided with a plurality of weight reducing holes.

In some embodiments, two ends of the square tube protrude from the upper cover plate and the lower cover plate respectively, so as to be used for supporting the square tube in another clamping fixture.

In some embodiments, positioning holes are formed in the lower cover plate and the upper cover plate; the clamping jig further comprises an auxiliary clamping piece and a positioning piece; the auxiliary clamping piece is used for supporting the lower cover plate; the locating piece is arranged on one side of the auxiliary clamping piece, which faces the lower cover plate, and the locating piece is used for penetrating through the locating holes in the lower cover plate and the upper cover plate so as to locate the lower cover plate and the upper cover plate.

In some embodiments, the auxiliary clamping member comprises a bottom plate and two opposite supporting members; the two supporting pieces are arranged on the bottom plate and used for supporting the lower cover plate, and the positioning piece is arranged on at least one of the two supporting pieces.

The embodiment of the utility model also provides a clamping jig module, which comprises a plurality of clamping jigs and gaskets according to any embodiment; one end of the gasket is abutted with the square tube of one clamping jig, the other end of the gasket is used for being abutted with the square tube of the other adjacent clamping jig, and the gasket is configured to adjust the distance between the two adjacent clamping jigs.

Drawings

Fig. 1 is a schematic perspective view of a clamping fixture according to some embodiments of the present utility model.

Fig. 2 is a schematic perspective view of a workpiece to which the clamping jig shown in fig. 1 is applied.

Fig. 3 is an exploded view of a clamping fixture according to some embodiments of the present utility model.

Fig. 4 is a schematic perspective view of an upper cover plate and a spring plate in the clamping fixture shown in fig. 1.

Fig. 5 is a schematic cross-sectional structure of the clamping fixture shown in fig. 1 along V-V.

Fig. 6 is a schematic perspective view of a clamping fixture module provided in some embodiments of the utility model.

Description of the main reference signs

Clamping jig 100

Lower cover plate 10

Mounting hole 11

Boss 12

Square end 20

Through hole 21

Upper cover plate 30

Connection hole 31

Lightening holes 32

Positioning hole 33

Locking assembly 40

Connector 41

Fixing member 42

Spring plate 50

Connector 51

Transition portion 52

Abutment portion 53

Auxiliary clamping piece 60

Bottom plate 61

Support 62

Positioning piece 70

Gasket 80

Workpiece 200

Outer rim 201

Inner annular wall 202

Lower edge 203

Upper edge 204

Clamping jig module 1000

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, in the description of the present utility model, it is to be noted that the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the two components can be connected in a mechanical mode, can be electrically connected or can be communicated with each other, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or can be in interaction relation with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Some embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, some embodiments of the present utility model provide a clamping fixture 100. The clamping jig 100 is used for clamping a workpiece 200, and the workpiece 200 in this embodiment is a frame workpiece 200, such as a mobile phone middle frame, a tablet personal computer frame, and the like. The workpiece 200 includes an outer edge 201 and an inner annular wall 202, wherein the outer edge 201 and the inner annular wall 202 are both rectangular frame structures, and the inner annular wall 202 is connected to the inner side of the outer edge 201. Taking the workpiece 200 shown in fig. 2 as an example, the upper side, the lower side and the outer side of the outer rim 201 are mirror surfaces.

Referring to fig. 3 and 4, the clamping fixture 100 includes a lower cover plate 10, a square tube 20, an upper cover plate 30, a locking assembly 40, a spring plate 50, an auxiliary clamping member 60 and a positioning member 70.

Referring to fig. 2 and 3, the lower cover plate 10 and the upper cover plate 30 are rectangular plates, and the lower cover plate 10 and the upper cover plate 30 have the same size. When the workpiece 200 is clamped, the edges of the upper cover plate 30 and the lower cover plate 10 respectively abut against the upper edge 204 and the lower edge 203 inside the outer edge 201 of the workpiece 200, and at this time, the upper cover plate 30 and the lower cover plate 10 perform internal bracing positioning on the workpiece 200. Since the upper cover plate 30 and the lower cover plate 10 are abutted against the inner side of the outer rim 201, the mirror surface portion on the outer rim 201 is not scratched at this time, or the mirror surface portion is kept clean and not contaminated. Therefore, the upper and lower cover plates 30 and 10 meet the requirement of clamping the workpiece 200, and do not damage the workpiece 200 or contaminate the workpiece 200.

Referring to fig. 2 and 3, an assembly hole 11 is formed in the middle of the lower cover plate 10, and the assembly hole 11 is rectangular. The square through 20 is rectangular, a through hole 21 is formed in the square through 20, the square through 20 is fixed on the lower cover plate 10 through welding, the through hole 21 is communicated with the assembly hole 11, and the through hole 21 is rectangular and has the same size as the assembly hole 11. When the workpiece 200 is clamped, the workpiece 200 is placed on the lower cover plate 10, then the upper cover plate 30 is covered on the workpiece 200, and at the moment, the connecting hole 31 of the upper cover plate 30 is sleeved on the square through 20. When the workpiece 200 is clamped between the upper cover plate 30 and the lower cover plate 10, the square through 20 is aligned and sleeved on the rectangular string rod in the PVD coating equipment, and the through hole 21 on the square through 20 is rectangular, so that the workpiece 200 and the string rod cannot rotate relatively in the process of coating the workpiece 200, and the coating quality of the workpiece 200 is prevented from being influenced. In other embodiments, the shape of the through-hole 21 and the fitting hole 11 may be a non-circular shape such as a five-sided polygon, a hexagon, or the like.

Referring to fig. 3 and 5, when the square tube 20 is welded on the lower cover plate 10, one end portion of the square tube 20 protrudes out of the lower cover plate 10, and when the upper cover plate 30 is covered on the lower cover plate 10, the other end portion of the square tube 20 protrudes out of the upper cover plate 30. When a plurality of clamped workpieces 200 are mounted on the string rod, the square tube 20 in one clamping jig 100 is abutted against the square tube 20 in the other clamping jig 100, so that the square tube 20 plays a supporting role to prevent the upper cover plate 30 or the lower cover plate 10 from being crushed.

Referring to fig. 3 and 5, a protruding portion 12 is protruding from a side of the lower cover plate 10 facing the upper cover plate 30, the protruding portion 12 is rectangular and annular, when the workpiece 200 is mounted on the lower cover plate 10, a side surface of the protruding portion 12 abuts against the inner annular wall 202, and the protruding portion 12 plays a role in supporting and positioning the workpiece 200.

Referring to fig. 3, the upper cover plate 30 and the lower cover plate 10 are provided with a plurality of weight reducing holes 32, and in this embodiment, the shape of the weight reducing holes 32 is not limited. By providing the weight reducing holes 32 in the upper and lower cover plates 30 and 10, the weight of the upper and lower cover plates 30 and 10 can be reduced, thereby facilitating transfer and transportation. It should be noted that the design of the lightening holes 32 does not affect the strength of the upper cover plate 30 and the lower cover plate 10.

Referring to fig. 1 and 3, the number of locking assemblies 40 is plural, and plural sets of locking assemblies 40 are used to lock the upper cover plate 30 and the lower cover plate 10. The locking assembly 40 includes a connector 41 and a retainer 42. In this embodiment, the connecting member 41 may be a bolt, and the fixing member 42 may be a nut. The upper cover plate 30 and the lower cover plate 10 are respectively provided with a hole structure matched with the connecting piece 41, when the workpiece 200 is clamped between the upper cover plate 30 and the lower cover plate 10, one end of the connecting piece 41 is abutted against the upper cover plate 30, the other end of the connecting piece 41 penetrates through the upper cover plate 30 and the lower cover plate 10, and the fixing piece 42 is in threaded connection with the connecting piece 41 and abutted against one side of the lower cover plate 10, which is away from the upper cover plate 30. The upper and lower cover plates 30 and 10 are fixed together by the locking assembly 40 and firmly hold the workpiece 200.

Referring to fig. 3 and 4, the elastic sheet 50 is disposed on the upper cover 30 or the lower cover 10, and is electrically connected to the workpiece 200 to perform a coating process on the workpiece 200. In the present embodiment, the elastic piece 50 is connected to the upper cover 30, and when the upper cover 30 is covered on the lower cover 10, the elastic piece 50 abuts against the workpiece 200. The workpiece 200 in this embodiment is formed by splicing multiple sections of structures, and two adjacent sections of structures are connected through plastic, so in order to ensure that each section of structure can be coated with a film, it is necessary to ensure that each section of structure can be in a conductive state, therefore, the number of the elastic sheets 50 is multiple, multiple elastic sheets 50 are arranged at intervals, and each elastic sheet 50 is used for being abutted against each section of structure.

Referring to fig. 3 and 4, the spring plate 50 includes a connecting body 51, a transition portion 52 and an abutting portion 53. One end of the connecting body 51 is connected to one side of the upper cover plate 30 facing the lower cover plate 10, one end of the transition portion 52 is connected to the other end of the connecting body 51, the other end of the transition portion 52 extends away from the upper cover plate 30, one end of the abutting portion 53 is connected to the other end of the transition portion 52, and the other end of the abutting portion 53 is used for abutting against the workpiece 200 to conduct electricity to the workpiece 200 when the workpiece 200 is clamped. In this embodiment, the connecting body 51, the transition portion 52 and the abutting portion 53 are integrally formed, the elastic sheet 50 has a substantially Z-shaped structure, and the connecting body 51 is welded and fixed to the upper cover 30.

Since the transition portion 52 extends away from the upper cover 30 at one end of the connecting body 51, the abutment portion 53 is spaced from the upper cover 30, and the distance between the abutment portion 53 and the upper cover 30 is a distance that the abutment portion 53 can rebound. When the upper cover plate 30 is set on the work 200, the abutting portion 53 abuts against the inner annular wall 202 of the work 200, and the abutting portion 53 approaches the upper cover plate 30. When the elastic sheet 50 is of a rigid structure, the workpiece 200 is easy to crush in the process of clamping the workpiece 200, so that the movable abutting part 53 has a buffer function, the abutting part 53 cannot crush the workpiece 200, and the workpiece 200 is protected.

Referring to fig. 3, the auxiliary clamping member 60 includes a bottom plate 61 and two supporting members 62, the two supporting members 62 are disposed on the bottom plate 61, the two supporting members 62 are used for supporting the lower cover plate 10, and the positioning member 70 is disposed on the supporting members 62. After the lower cover plate 10 is placed on the two supporting members 62, the lower cover plate 10 is lifted away from the bottom plate 61 by the supporting members 62, when the upper cover plate 30 and the lower cover plate 10 are locked together by the locking assembly 40, the workpiece 200 needs to be transferred to the coating equipment, and due to the space between the lower cover plate 10 and the bottom plate 61, an operator or a manipulator can conveniently extend into the lightening holes 32 to grasp the upper cover plate 30 and the lower cover plate 10 so as to transfer the workpiece 200.

In the present embodiment, the number of the positioning members 70 is plural, and the plurality of positioning members 70 are provided on the two supporting members 62 on the auxiliary clamping member 60. For example, the positioning member 70 may be a positioning pin. The upper cover plate 30 and the lower cover plate 10 are respectively provided with a plurality of positioning holes 33, when the workpiece 200 needs to be clamped, the positioning holes 33 on the lower cover plate 10 are aligned with the positioning pieces 70 and sleeved on the positioning pieces 70, and at the moment, the lower cover plate 10 is positioned on the auxiliary clamping piece 60 under the action of the positioning pieces 70, so that the lower cover plate 10 cannot move randomly when the workpiece 200 is installed on the lower cover plate 10. When the workpiece 200 is mounted on the lower cover plate 10, the upper cover plate 30 is aligned to the positioning member 70, and the upper cover plate 30 is covered on the workpiece 200, the positioning member 70 plays a role in positioning the upper cover plate 30, so that the upper cover plate 30 and the lower cover plate 10 can accurately clamp the workpiece 200.

The working process of the clamping fixture 100 provided by the embodiment of the utility model is approximately as follows:

when clamping the workpiece 200, the positioning hole 33 on the lower cover plate 10 is aligned with the positioning piece 70 on the supporting piece 62, the lower cover plate 10 is sleeved on the positioning piece 70, and the lower cover plate 10 is positioned on the auxiliary clamping piece 60 under the action of the positioning piece 70; then, the workpiece 200 is placed on the lower cover plate 10, at this time, the edge of the lower cover plate 10 is abutted against the outer edge 201 of the workpiece 200, and the boss 12 is abutted against the inner annular wall 202; next, aligning the upper cover plate 30 with the positioning piece 70 and covering the upper cover plate 30 on the workpiece 200, wherein the edge of the upper cover plate 30 is abutted against the outer edge 201 of the workpiece 200, and the elastic sheet 50 is abutted against the workpiece 200; finally, the upper cover plate 30 and the lower cover plate 10 are locked together by using the locking assembly 40, thereby completing the clamping.

Because the upper cover plate 30 and the lower cover plate 10 clamp the workpiece 200 in an internal supporting positioning mode, the upper cover plate 30 and the lower cover plate 10 cannot touch the mirror surface part of the workpiece 200, and therefore the defects of imprinting, scratching or dirt and the like on the surface of the workpiece 200 are avoided. The auxiliary clamping piece 60 has the functions of supporting and positioning the upper cover plate 30 and the lower cover plate 10 in the process of clamping the workpiece 200, so that the clamping operation of the workpiece 200 is more convenient, and the workpiece 200 is not easy to scratch or pollute. In addition, the weight-reducing holes 32 on the upper cover plate 30 and the lower cover plate 10 can reduce the weight and also can perform the grabbing function, so that an operator or a transfer mechanism is not easy to touch the workpiece 200 when grabbing the upper cover plate 30 and the lower cover plate 10, and the mirror surface part of the workpiece 200 is not easy to scratch or pollute.

Referring to fig. 1 and 6, the embodiment of the utility model discloses a clamping jig module 1000, wherein the clamping jig module 1000 includes a plurality of clamping jigs 100 and a gasket 80 described in the above embodiment, the gasket 80 is rectangular and annular, when the two clamping jigs 100 are sleeved on a string rod, the gasket 80 is disposed between the two clamping jigs 100, two ends of the gasket 80 are respectively abutted to two square tubes 20 in the two clamping jigs 100, and the gasket 80 is used for adjusting the spacing between the two clamping jigs 100, so that the plating of a workpiece 200 can be more uniform.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. Clamping tool, its characterized in that includes:

the edge of the lower cover plate is used for abutting against the inner side of the workpiece and supporting and positioning the lower edge of the workpiece, and an assembly hole is formed in the lower cover plate;

the square through is connected with the lower cover plate, a through hole is formed in the square through, the through hole is communicated with the assembly hole, and a string rod is inserted into the through hole so that the clamping jig is fixed on the string rod;

the upper cover plate is arranged opposite to the lower cover plate, a connecting hole is formed in the upper cover plate, the connecting hole is sleeved on the square tube, and the edge of the upper cover plate is used for abutting against the inner side of the workpiece to support and position the upper edge of the workpiece;

the locking assembly is connected to the upper cover plate and the lower cover plate and used for locking the upper cover plate and the lower cover plate so as to clamp the workpiece.

2. The clamping jig of claim 1, wherein,

the lower cover plate is provided with a protruding portion in a protruding mode, the protruding portion faces one side of the upper cover plate, and the protruding portion is used for abutting against the workpiece to position the workpiece.

3. The clamping jig of claim 1, further comprising:

the elastic piece is arranged on the upper cover plate or the lower cover plate and is used for abutting against the workpiece to be electrically connected with the workpiece.

4. The clamping jig of claim 3 wherein the spring comprises:

the connecting body is connected with the upper cover plate or the lower cover plate;

one end of the transition part is connected with the connecting body, and the other end of the transition part extends to a direction away from the upper cover plate;

and one end of the abutting part is connected with the other end of the transition part, and the other end of the abutting part is used for abutting against the workpiece.

5. The clamping jig of claim 1 wherein the locking assembly comprises:

one end of the connecting piece is abutted to one side, away from the lower cover plate, of the upper cover plate, and the other end of the connecting piece penetrates through the upper cover plate and the lower cover plate;

the fixing piece is connected to the connecting piece, the fixing piece butt in one side of the lower cover plate deviating from the upper cover plate, the fixing piece with the connecting piece is used for fixing the upper cover plate with the lower cover plate.

6. The clamping jig of claim 1, wherein,

and a plurality of lightening holes are formed in the upper cover plate and the lower cover plate.

7. The clamping jig of claim 1, wherein,

and two ends of the square tube respectively protrude out of the upper cover plate and the lower cover plate so as to be used for supporting the square tube in the other clamping jig.

8. The clamping jig of claim 1, wherein,

positioning holes are formed in the lower cover plate and the upper cover plate;

clamping tool still includes:

an auxiliary clamping piece for supporting the lower cover plate;

the positioning piece is arranged on one side of the auxiliary clamping piece, facing the lower cover plate, and is used for penetrating through the positioning holes in the lower cover plate and the upper cover plate so as to position the lower cover plate and the upper cover plate.

9. The clamping jig of claim 8, wherein the auxiliary clamping member comprises:

a bottom plate;

the two supporting pieces are oppositely arranged, the two supporting pieces are arranged on the bottom plate and used for supporting the lower cover plate, and the positioning piece is arranged on at least one of the two supporting pieces.

10. Clamping tool module, its characterized in that includes:

a plurality of clamping jigs according to any one of claims 1 to 9;

the gasket, the one end of gasket with the square tube butt of a clamping tool, the other end of gasket is used for with another adjacent the square tube butt of clamping tool, the gasket is configured to adjust two adjacent the interval of clamping tool.