CN215095890U

CN215095890U - Hot pressing jig

Info

Publication number: CN215095890U
Application number: CN202120466955.1U
Authority: CN
Inventors: 郑一民
Original assignee: Zhejiang Crystal Optech Co Ltd
Current assignee: Zhejiang Crystal Optech Co Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-12-10
Anticipated expiration: 2031-03-03

Abstract

The utility model provides a hot pressing tool, relates to machining technical field, including bottom plate, apron, locating piece and spacer subassembly can be dismantled respectively and set up on the bottom plate, apron and bottom plate fixed connection correspond locating piece and spacer subassembly on the apron and are provided with the via hole, and the other end of locating piece and spacer subassembly corresponds respectively and passes the via hole and stretch out outside the apron. This hot pressing tool has simple structure, the advantage of easily processing to make the precision of the difference in height that exists between locating piece and the backing block subassembly and this hot pressing tool's depth of parallelism can satisfy the required precision of fingerprint identification subassembly segment difference, and then make the defective rate that can reduce fingerprint identification subassembly segment difference through this hot pressing tool.

Description

Hot pressing jig

Technical Field

The utility model relates to a machinery processing technology field particularly, relates to a hot pressing tool.

Background

With the development of fingerprint identification technology, fingerprint identification functions have been widely applied to various electronic products. The subassembly that is used for fingerprint identification who sets up on electronic product among the prior art includes lens and becket usually, and its assembly method is for using the pre-compaction machine to paste hot melt adhesive tape to the becket surface in advance, places the lens on the hot melt adhesive tape again, then puts the subassembly that preliminary equipment is good and originally presses the end mould and carry out hot pressing on the mould, and mould and this pressure end mould can press together and heat the pressurization to middle subassembly together, and the activity of activation hot melt adhesive tape makes lens and becket combine together completely.

After the assembly is completed, the lens needs to be higher than the metal ring, and the height difference between the two is called the step difference (OffSet). Due to the performance requirement of the fingerprint identification assembly, the control on the segment difference in the assembling process of the lens and the metal ring is very strict. In the prior art, the pressing bottom die is of an integrated structure, so that the problem of high processing difficulty exists, the precision of the pressing bottom die is low, and the reject ratio of the section difference is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot pressing tool has simple structure, the advantage of easily processing to make the precision of the difference in height that exists between locating piece and the spacer subassembly and this hot pressing tool's depth of parallelism can satisfy the required precision of fingerprint identification subassembly segment difference, and then make and to reduce the defective rate of fingerprint identification subassembly segment difference through this hot pressing tool.

The embodiment of the utility model is realized like this:

an embodiment of the utility model provides a hot pressing tool, including bottom plate, apron, locating piece and gasket subassembly, the locating piece with the gasket subassembly can be dismantled respectively set up in on the bottom plate, the apron with bottom plate fixed connection, correspond on the apron the locating piece with the gasket subassembly is provided with the via hole, the locating piece with the other end of gasket subassembly corresponds respectively passes the via hole stretches out outside the apron. This hot pressing tool has simple structure, the advantage of easily processing to make the precision of the difference in height that exists between locating piece and the backing block subassembly and this hot pressing tool's depth of parallelism can satisfy the required precision of fingerprint identification subassembly segment difference, and then make the defective rate that can reduce fingerprint identification subassembly segment difference through this hot pressing tool.

Optionally, a connecting portion extends from one end of the positioning block close to the bottom plate to the outer edge, and two sides of the connecting portion respectively abut against the bottom plate and the cover plate, so that the positioning block abuts against the bottom plate.

Optionally, a clamping groove is formed in the bottom plate, and one end, close to the bottom plate, of the cushion block assembly is accommodated in the clamping groove, so that the cushion block assembly is clamped with the bottom plate.

Optionally, the pad assembly includes a plurality of first pads and a plurality of second pads, the plurality of first pads are distributed on the edge of the bottom plate, and the plurality of second pads are distributed on the middle of the bottom plate.

Optionally, the cross-sectional area of the first head block is greater than the cross-sectional area of the second head block.

Optionally, the first cushion block and the second cushion block are both cylindrical structures, and the diameter of the first cushion block is larger than that of the second cushion block.

Optionally, the positioning blocks include a plurality of positioning blocks, and the plurality of positioning blocks are arranged at intervals.

Optionally, a plurality of the positioning blocks are arranged in a matrix.

Optionally, the cover plate further comprises a plurality of screws, a plurality of screw holes are formed in the bottom plate, through holes are formed in the cover plate corresponding to the screw holes, and the screws penetrate through the through holes and are accommodated in the screw holes, so that the cover plate is in threaded connection with the bottom plate.

Optionally, one side of the bottom plate, which is far away from the cover plate, is further provided with a plurality of positioning holes, and the bottom plate is fixedly connected with an assembling machine through the positioning holes.

The utility model discloses beneficial effect includes:

this hot pressing tool includes the bottom plate, the apron, locating piece and spacer subassembly, and locating piece and spacer subassembly can be dismantled respectively and set up on the bottom plate, and apron and bottom plate fixed connection correspond locating piece and spacer subassembly on the apron and are provided with the via hole, and the other end of locating piece and spacer subassembly corresponds respectively and passes the via hole and stretch out outside the apron to make the subassembly that preliminary assembly is good can put and carry out the hot pressing on this hot pressing tool. In the process of placing the preliminarily assembled assembly on the hot pressing jig for hot pressing, the upper die can be close to the hot pressing jig and pressed together with the hot pressing jig, the fingerprint identification assembly can be placed on the positioning block in the process, namely, the positioning block can play a role in positioning the placement of the fingerprint identification assembly, and the cushion block assembly can play a role in supporting the upper die. The control of the specific numerical value of the step difference can be realized by the pressing height of the local pressing upper die, and the yield of the step difference is determined by the height difference between the positioning block and the cushion block component and the parallelism of the hot pressing jig. Compare in this die pressing block among the prior art, the hot pressing tool that this application provided, because locating piece and spacer subassembly can be dismantled respectively and set up on the bottom plate, therefore, the bottom plate, the apron, locating piece and spacer subassembly can be processed alone respectively, so that this hot pressing tool has simple structure, the advantage of easy processing, thereby make the precision of the difference in height that exists between locating piece and the spacer subassembly and the depth of parallelism of this hot pressing tool can satisfy the required precision of fingerprint identification subassembly segment difference, and then make and to reduce the defective rate of fingerprint identification subassembly segment difference (or can improve the yield of fingerprint identification subassembly segment difference through this hot pressing tool). In addition, to bottom plate, apron and the locating piece of this hot pressing tool, can also be provided with the supporting cushion subassembly of many sets of co-altitude according to actual demand to fingerprint identification subassembly's production demand when satisfying different becket machining error.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a hot pressing fixture according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a hot pressing fixture according to an embodiment of the present invention.

Icon: 100-hot pressing fixture; 10-a base plate; 11-screw holes; 12-positioning holes; 20-cover plate; 30-positioning blocks; 40-a pad assembly; 41-a first cushion block; 42-second head block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present embodiment provides a hot pressing fixture 100, which includes a bottom plate 10, a cover plate 20, a positioning block 30, and a pad assembly 40, wherein the positioning block 30 and the pad assembly 40 are detachably disposed on the bottom plate 10, the cover plate 20 is fixedly connected to the bottom plate 10, a through hole is disposed on the cover plate 20 corresponding to the positioning block 30 and the pad assembly 40, and the other end of the positioning block 30 and the other end of the pad assembly 40 respectively penetrate through the through hole and extend out of the cover plate 20. This hot pressing tool 100 has simple structure, easy advantage of processing to make the precision of the difference in height that exists between locating piece 30 and the backing block subassembly 40 and this hot pressing tool 100's depth of parallelism can satisfy the required precision of fingerprint identification subassembly segment difference, and then make the defective rate that can reduce the fingerprint identification subassembly segment difference through this hot pressing tool 100.

It should be noted that, as shown in fig. 1 and fig. 2, the hot pressing fixture 100 includes a bottom plate 10, a cover plate 20, a positioning block 30 and a pad assembly 40, wherein the positioning block 30 and the pad assembly 40 are respectively detachably disposed on the bottom plate 10, the cover plate 20 is fixedly connected to the bottom plate 10, in order to expose the other ends of the positioning block 30 and the pad assembly 40, which are far away from the bottom plate 10, out of the cover plate 20, via holes are disposed on the cover plate 20 corresponding to the positioning block 30 and the pad assembly 40, so that the other ends of the positioning block 30 and the pad assembly 40, which are far away from the bottom plate 10, can respectively and correspondingly penetrate through the via holes to extend out of the cover plate 20, thereby enabling the preliminarily assembled assembly to be placed on the hot pressing fixture 100 for hot pressing.

In the process of placing the preliminarily assembled assembly on the hot pressing jig 100 for hot pressing, the upper die can approach the hot pressing jig 100 and is pressed together with the hot pressing jig 100, the fingerprint identification assembly can be placed on the positioning block 30 in the process, namely, the positioning block 30 can play a role in positioning the placement of the fingerprint identification assembly, and the cushion block assembly 40 can play a role in supporting the upper die. It should be understood by those skilled in the art that the control of the specific value of the step can be realized by the pressing height of the upper press die, and the height difference between the positioning block 30 and the pad assembly 40 and the parallelism of the hot press jig 100 determine the yield of the step.

Compare in this die pressing block among the prior art, the hot pressing tool 100 that this application provided, because locating piece 30 and spacer subassembly 40 can dismantle respectively and set up on bottom plate 10, therefore, bottom plate 10, apron 20, locating piece 30 and spacer subassembly 40 can carry out independent processing respectively and maintain the change, so that this hot pressing tool 100 has simple structure, the advantage of easily processing, thereby make the precision of the difference in height that exists between locating piece 30 and the spacer subassembly 40 and the depth of parallelism of this hot pressing tool 100 can satisfy the required precision of fingerprint identification subassembly segment difference, and then make the defective rate that can reduce fingerprint identification subassembly segment difference through this hot pressing tool 100 (or can improve the yield of fingerprint identification subassembly segment difference through this hot pressing tool 100). In addition, for the bottom plate 10, the cover plate 20 and the positioning block 30 of the hot pressing jig 100, a plurality of sets of pad assemblies 40 with different heights can be arranged according to actual requirements in a matching manner, so that the production requirements of fingerprint identification assemblies in different metal ring processing errors can be met.

Regarding the outer diameter of the other end of the positioning block 30 far away from the bottom plate 10, the inner diameter of the through hole corresponding to the positioning block 30 on the cover plate 20, the outer diameter of the other end of the cushion block assembly 40 far away from the bottom plate 10, and the inner diameter of the through hole corresponding to the cushion block assembly 40 on the cover plate 20, there is no specific limitation here, and those skilled in the art should be able to make reasonable selection and design according to actual conditions, only that the other ends of the positioning block 30 and the cushion block assembly 40 far away from the bottom plate 10 can respectively and correspondingly pass through the through hole and extend out of the cover plate 20.

As described above, the hot pressing jig 100 includes the bottom plate 10, the cover plate 20, the positioning block 30 and the pad assembly 40 are respectively detachably disposed on the bottom plate 10, the cover plate 20 is fixedly connected to the bottom plate 10, the cover plate 20 is provided with via holes corresponding to the positioning block 30 and the pad assembly 40, and the other ends of the positioning block 30 and the pad assembly 40 respectively penetrate through the via holes to extend out of the cover plate 20, so that the primarily assembled assembly can be placed on the hot pressing jig 100 for hot pressing. In the process of placing the preliminarily assembled assembly on the hot pressing jig 100 for hot pressing, the upper die can approach the hot pressing jig 100 and is pressed together with the hot pressing jig 100, the fingerprint identification assembly can be placed on the positioning block 30 in the process, namely, the positioning block 30 can play a role in positioning the placement of the fingerprint identification assembly, and the cushion block assembly 40 can play a role in supporting the upper die. The control of the specific value of the step can be realized by the pressing height of the local pressing upper die, and the yield of the step is determined by the height difference between the positioning block 30 and the cushion block assembly 40 and the parallelism of the hot pressing jig 100. Compare in this die pressing block among the prior art, the hot pressing tool 100 that this application provided, because locating piece 30 and spacer subassembly 40 can dismantle respectively and set up on bottom plate 10, therefore, bottom plate 10, apron 20, locating piece 30 and spacer subassembly 40 can carry out independent processing respectively and maintain the change, so that this hot pressing tool 100 has simple structure, the advantage of easily processing, thereby make the precision of the difference in height that exists between locating piece 30 and the spacer subassembly 40 and the depth of parallelism of this hot pressing tool 100 can satisfy the required precision of fingerprint identification subassembly segment difference, and then make the defective rate that can reduce fingerprint identification subassembly segment difference through this hot pressing tool 100 (or can improve the yield of fingerprint identification subassembly segment difference through this hot pressing tool 100). In addition, for the bottom plate 10, the cover plate 20 and the positioning block 30 of the hot pressing jig 100, a plurality of sets of pad assemblies 40 with different heights can be arranged according to actual requirements in a matching manner, so that the production requirements of fingerprint identification assemblies in different metal ring processing errors can be met.

Regarding the detachable connection manner of the positioning block 30 and the bottom plate 10, there is no specific limitation, and those skilled in the art should be able to select and design reasonably according to actual situations, and only need to detachably connect the positioning block 30 and the bottom plate 10, so that the hot pressing fixture 100 is easy to process. For example, as shown in fig. 2, in the present embodiment, a connecting portion extends from one end of the positioning block 30 close to the bottom plate 10 to an outer edge, and two sides of the connecting portion respectively abut against the bottom plate 10 and the cover plate 20, so that the positioning block 30 abuts against the bottom plate 10.

It should be noted that, regarding the outer diameter of the connecting portion, there is no specific limitation, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, only that two sides of the connecting portion can be respectively abutted against the bottom plate 10 and the cover plate 20 to abut the positioning block 30 against the bottom plate 10. It should be understood that, in order to enable both sides of the connecting portion to respectively abut against the bottom plate 10 and the cover plate 20 to enable the positioning block 30 to abut against the bottom plate 10, the outer diameter of the connecting portion should be larger than the inner diameter of the through hole of the cover plate 20 corresponding to the positioning block 30.

Regarding the detachable connection manner of the pad assembly 40 and the bottom plate 10, there is no specific limitation, and those skilled in the art should be able to make reasonable selection and design according to actual situations, and only need to make the pad assembly 40 and the bottom plate 10 detachably connected, so that the hot pressing fixture 100 is easy to process. Illustratively, as shown in fig. 1 and fig. 2, in the present embodiment, a clamping groove is provided on the bottom plate 10, and one end of the pad assembly 40 close to the bottom plate 10 is received in the clamping groove, so that the pad assembly 40 is clamped with the bottom plate 10.

It should be noted that, regarding the inner diameter of the clamping groove, there is no specific limitation, and those skilled in the art should be able to make reasonable selection and design according to actual situations, only by making one end of the pad assembly 40 close to the bottom plate 10 be able to be accommodated in the clamping groove, so as to clamp the pad assembly 40 to the bottom plate 10. It should be understood that, in order to allow the end of the pad assembly 40 near the base plate 10 to be received in the snap groove to allow the pad assembly 40 to be snapped into the base plate 10, the inner diameter of the snap groove should be equal to or slightly larger than the outer diameter of the end of the pad assembly 40 near the base plate 10.

Besides, the depth of the card slot is not limited in particular, and those skilled in the art should be able to make reasonable selection and design according to practical situations. It should be understood that, the deeper the depth of the clamping groove is, the more the part of the end of the cushion block assembly 40 close to the bottom plate 10, which is accommodated in the clamping groove is, the higher the fastening degree of the cushion block assembly 40 and the bottom plate 10 is; the shallower the depth of the clamping groove is, the less the portion of the end of the cushion block assembly 40 close to the bottom plate 10, which is accommodated in the clamping groove is, and the lower the fastening degree of the cushion block assembly 40 and the bottom plate 10 is.

When mould and this hot pressing tool 100 are pressed together in order to make this pressure, cushion block subassembly 40 all can play the supporting role at the edge of bottom plate 10 and the middle part of bottom plate 10 to improve the even degree of atress between mould and this hot pressing tool 100 in this pressure, as shown in fig. 1 and fig. 2, in this embodiment, cushion block subassembly 40 includes a plurality of first cushions 41 and a plurality of second cushion 42, a plurality of first cushions 41 distribute to set up in the edge of bottom plate 10, a plurality of second cushion 42 distribute to set up in the middle part of bottom plate 10.

As shown in fig. 1 and fig. 2, in this embodiment, the cross-sectional area of the first cushion block 41 is larger than that of the second cushion block 42, so that on the premise that the first cushion block 41 and the second cushion block 42 can both ensure the supporting strength, the second cushion block 42 can also reduce the floor area thereof as much as possible, thereby avoiding the influence on the distribution of the plurality of positioning blocks 30, and further avoiding the reduction of the hot-pressing efficiency of the fingerprint identification module.

In order to facilitate the machining of the first and second head blocks 41 and 42, for example, as shown in fig. 1 and 2, in the present embodiment, the first head block 41 and the second head block 42 each have a cylindrical structure, and the diameter of the first head block 41 is larger than that of the second head block 42. Of course, in other embodiments, the first block 41 and the second block 42 may have a rectangular structure.

In this embodiment, the positioning block 30 includes a plurality of positioning blocks 30, and the plurality of positioning blocks 30 are arranged at intervals. The number of positioning blocks 30 is not limited to the above, and those skilled in the art should be able to select and design the number appropriately according to the actual situation. It should be understood that the greater the number of the positioning blocks 30, the more efficient the thermal pressing fixture 100 can thermally press the fingerprint recognition assembly. Illustratively, the number of positioning blocks 30 may be 18, 20, 24, etc. Illustratively, as shown in fig. 1, in the present embodiment, the positioning blocks 30 are arranged in a matrix, for example, 3 rows and 6 columns, 4 rows and 5 columns, or 4 rows and 6 columns.

Regarding the fixing connection manner of the cover plate 20 and the base plate 10, there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to actual situations, and only need to fixedly connect the positioning block 30 and the base plate 10. Illustratively, as shown in fig. 1, in the present embodiment, a plurality of screws are further included, a plurality of screw holes 11 are provided on the base plate 10, through holes are provided on the cover plate 20 corresponding to the screw holes 11, and the screws are received in the screw holes 11 through the through holes, so that the cover plate 20 is screwed with the base plate 10. It should be noted that, in order to avoid the screw holes 11 affecting the arrangement of the positioning block 30 and the pad assembly 40, the screw holes 11 should be distributed along the edge of the base plate 10 and staggered with respect to the pad assembly 40.

The number of the screws, the screw holes 11 and the through holes is not limited in particular, and those skilled in the art should be able to make reasonable selection and design according to the actual situation by only having the screws pass through the through holes and be accommodated in the screw holes 11 to screw the cover plate 20 and the base plate 10. Illustratively, the number of screws, screw holes 11 and through holes is three, four or six, etc. It should be understood that the greater the number of screws, screw holes 11 and through holes, the more firmly the cover plate 20 is screwed with the base plate 10; the fewer the number of screws, screw holes 11 and through holes, the less firmly the cover plate 20 is screwed to the base plate 10.

In order to enable the hot pressing fixture 100 to be correctly assembled on the assembling machine, and then to be matched with the upper die to perform hot pressing on the fingerprint identification assembly, as shown in fig. 2, in this embodiment, a plurality of positioning holes 12 are further disposed on one side of the bottom plate 10 away from the cover plate 20, and the bottom plate 10 is fixedly connected to the assembling machine through the positioning holes 12.

The number of the positioning holes 12 is not particularly limited, and those skilled in the art should be able to select and design appropriately according to the actual situation, so long as the base plate 10 is fixedly connected to the assembling machine through the positioning holes 12. Illustratively, the number of positioning holes 12 is two, three, four, or the like. It should be understood that the greater the number of positioning holes 12, the more firmly the base plate 10 is fixedly connected to the assembling machine; the smaller the number of positioning holes 12, the lower the degree of firmness with which the base plate 10 is fixedly connected to the assembling machine.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hot pressing jig, its characterized in that, includes bottom plate, apron, locating piece and spacer subassembly, the locating piece with the spacer subassembly can dismantle respectively set up in on the bottom plate, the apron with bottom plate fixed connection, correspond on the apron the locating piece with the spacer subassembly is provided with the via hole, the locating piece with the other end of spacer subassembly corresponds respectively and passes the via hole stretches out outside the apron.

2. The hot pressing fixture according to claim 1, wherein a connecting portion extends from one end of the positioning block close to the bottom plate to an outer edge, and two sides of the connecting portion respectively abut against the bottom plate and the cover plate, so that the positioning block abuts against the bottom plate.

3. The hot pressing fixture according to claim 1, wherein a slot is disposed on the bottom plate, and one end of the pad assembly close to the bottom plate is received in the slot, so that the pad assembly is clamped to the bottom plate.

4. The hot pressing jig according to claim 1, wherein the pad assembly includes a plurality of first pads and a plurality of second pads, the plurality of first pads are distributed on the edge of the bottom plate, and the plurality of second pads are distributed on the middle of the bottom plate.

5. The jig of claim 4, wherein the cross-sectional area of the first block is greater than the cross-sectional area of the second block.

6. The hot pressing jig according to claim 5, wherein the first block and the second block are each cylindrical in shape, and the diameter of the first block is larger than that of the second block.

7. The hot pressing jig according to claim 1, wherein the positioning block includes a plurality of positioning blocks, and the plurality of positioning blocks are arranged at intervals.

8. The jig according to claim 7, wherein the positioning blocks are arranged in a matrix.

9. The hot pressing jig according to claim 1, further comprising a plurality of screws, wherein the base plate is provided with a plurality of screw holes, the cover plate is provided with through holes corresponding to the screw holes, and the screws are received in the screw holes through the through holes, so that the cover plate is in threaded connection with the base plate.

10. The hot pressing jig according to claim 1, wherein a plurality of positioning holes are further formed in a side of the bottom plate away from the cover plate, and the bottom plate is fixedly connected with the assembling machine through the positioning holes.