CN111730309A

CN111730309A - Press fit jig

Info

Publication number: CN111730309A
Application number: CN202010515722.6A
Authority: CN
Inventors: 付松; 徐颖龙; 张昕; 胡莎; 虞成城
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-10-02

Abstract

The invention discloses a pressing fixture, which comprises an upper template, a lower template matched with the upper template, a pressing piece, a core piece and two middle templates, wherein the core piece is used for fixing a structure to be pressed, the two middle templates are arranged on the lower template, the first containing position is matched with the core piece, the pressing piece is arranged between the core piece and the upper template, the two middle templates are respectively arranged on two opposite sides of the pressing piece, and the two middle templates respectively support the pressing piece. The pressing jig is simple and reliable in structure, easy to assemble and suitable for processing SMT conductive foam.

Description

Press fit jig

Technical Field

The invention relates to the technical field of material processing, in particular to a pressing jig.

Background

SMT (Surface mount Technology) conductive foam is a conductive contact terminal that can be reflow soldered to a PCB board by SMT and has excellent flexibility, and can be used for EMI (electromagnetic interference) countermeasures, grounding, or conductive terminals. The existing forming jig for manufacturing the SMT conductive foam has a complex structure and is troublesome to assemble.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a pressing fixture, tool simple structure easily assembles.

In order to solve the technical problems, the invention adopts the technical scheme that:

the pressing jig comprises an upper template, a lower template matched with the upper template, a pressing piece, a core piece and two middle templates, wherein the core piece is used for fixing a structure to be pressed, the two middle templates are used for accommodating the core piece, the lower template is provided with a first accommodating position matched with the core piece, the pressing piece is arranged between the core piece and the upper template, the two middle templates are respectively arranged on two opposite sides of the pressing piece, and the two middle templates respectively abut against the pressing piece.

The invention has the beneficial effects that: the pressing jig is simple and reliable in structure, easy to assemble and suitable for processing SMT conductive foam; easy operation and high forming efficiency during pressing.

Drawings

Fig. 1 is a schematic overall structure diagram of a pressing fixture according to a first embodiment of the invention;

fig. 2 is an exploded view of a pressing fixture according to an embodiment of the invention.

Description of reference numerals:

1. mounting a template; 11. a second guide hole; 2. a lower template; 21. a first receiving location; 22. a second receiving position; 23. a first guide member; 24. a second guide member; 25. a handle; 26. a gap structure; 3. pressing parts; 4. a core member; 5. a middle template; 51. a first guide hole; 6. cushion blocks; 7. conductive silica gel; 8. and (3) a PI film.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The most key concept of the invention is as follows: the lower template is provided with a first accommodating position matched with the core piece, the pressing piece is arranged between the core piece and the upper template, the middle templates are arranged on two opposite sides of the pressing piece, and the pressing jig is simple and reliable in structure and easy to assemble.

Referring to fig. 1 and 2, a press-fit jig includes an upper mold plate 1, a lower mold plate 2 matched with the upper mold plate 1, a press piece 3, a core piece 4 for fixing a structure to be press-fit, and two middle mold plates 5, wherein the lower mold plate 2 is provided with a first accommodating position 21 matched with the core piece 4, the press piece 3 is disposed between the core piece 4 and the upper mold plate 1, the two middle mold plates 5 are respectively disposed on two opposite sides of the press piece 3, and the two middle mold plates 5 respectively support the press piece 3.

From the above description, the beneficial effects of the present invention are: the pressing jig is simple and reliable in structure, easy to assemble and suitable for processing SMT conductive foam.

Further, the core piece structure further comprises two cushion blocks 6, and the two cushion blocks 6 are respectively arranged at two ends of the core piece 4.

As can be seen from the above description, the provision of the pads at both ends of the core prevents over-compression.

Further, the pressing member 3 has a funnel-shaped cross-sectional shape.

As can be seen from the above description, the pressing member is shaped funnel-shaped to concentrate the pressure on the core.

Further, the shape of one side surface of the middle template 5 close to the pressing piece 3 is matched with the shape of the side surface of the pressing piece 3.

According to the description, the middle template is matched with the pressing piece, so that the pressing piece can be well fixed, and the left and right displacement in the pressing process is prevented.

Further, a second containing position 22 is arranged on the lower template 2, the first containing position 21 is arranged in the middle of the second containing position 22, and the two middle templates 5 are arranged in the second containing position 22.

As can be seen from the above description, the provision of the second receiving location facilitates the fixing of the centering template.

Further, a first guiding member 23 is disposed on the second accommodating portion 22, and the middle mold plate 5 is provided with a first guiding hole 51 matched with the first guiding member 23.

Further, a second guide piece 24 is arranged on the lower template 2, and a second guide hole 11 matched with the second guide piece 24 is arranged on the upper template 1.

As apparent from the above description, the assembling efficiency can be improved by the cooperation of the guide member with the guide hole.

Further, handles 25 are respectively arranged on two opposite side surfaces of the lower template 2.

As can be seen from the above description, the handle is provided for ease of handling and manual exertion.

Furthermore, one side of the lower template 2 close to the upper template 1 is provided with a notch structure 26.

According to the above description, the gap structure is arranged to facilitate the separation of the upper template and the lower template after the pressing is completed.

Furthermore, the cushion block 6 is made of metal.

From the above description, it can be seen that the cushion block made of metal can ensure high structural strength.

Referring to fig. 1 and fig. 2, a first embodiment of the present invention is:

a pressing jig comprises an upper template 1, a lower template 2 matched with the upper template 1, a pressing piece 3, a core piece 4 used for fixing a structure to be pressed, two middle templates 5 and two cushion blocks 6. The core piece 4 is a rod-shaped structure, a first accommodating position 21 matched with the core piece 4 is arranged on the lower template 2, a second accommodating position 22 is further arranged on the lower template 2, and the first accommodating position 21 is arranged in the middle of the second accommodating position 22. The two middle templates 5 are arranged in the second accommodating position 22, the two middle templates 5 are respectively arranged on two opposite sides of the pressing piece 3, and the two middle templates 5 respectively support against the pressing piece 3 during pressing. The pressing piece 3 is arranged between the core piece 4 and the upper template 1, the cross section of the pressing piece 3 is funnel-shaped, namely, the cross section is in a shape with a large upper part and a small lower part, and the shape of one side surface of the middle template 5 close to the pressing piece 3 is matched with the shape of the side surface of the pressing piece 3.

In this embodiment, the two cushion blocks 6 are respectively disposed at two ends of the core member 4, specifically, the cushion blocks 6 may be hollow structures, and are sleeved at two ends of the core member 4, and the height of the cushion blocks 6 should be higher than the height of the core member 4, so as to play a role in protection. Preferably, the cushion block 6 is made of metal. The second containing position 22 is provided with a first guiding member 23, and the middle template 5 is provided with a first guiding hole 51 matched with the first guiding member 23. The lower template 2 is provided with a second guide piece 24, and the upper template 1 is provided with a second guide hole 11 matched with the second guide piece 24. Handles 25 are respectively arranged on two opposite side surfaces of the lower template 2. In order to separate the upper template 1 from the lower template 2 conveniently, one side of the lower template 2 close to the upper template 1 is provided with a notch structure 26.

When adopting the pressfitting tool carries out the pressfitting of SMT electrically conductive bubble cotton, including following step:

1. the core member 4 is sleeved with the structure to be pressed, and then placed in the first receiving position 21.

When the SMT conductive foam is manufactured, when the pressing structures are the conductive silica gel 7 and the PI film 8, the conductive silica gel 7 is firstly sleeved on the core piece 4, and then the two cushion blocks 6 are installed and fixed at two ends of the core piece 4. The PI film 8 is a preformed structure, then the PI film 8 is fixed on the outer surface of the conductive silicone 7 (for example, wrapped on the surface of the conductive silicone 7), and finally the core 4 with the conductive silicone 7 and the PI film 8 fixed thereon is placed in the first receiving position 21.

2. Two of the center formworks 5 are placed on both sides of the core member 4, and then a pressing member 3 is placed on the core member 4.

3. And fixing the upper template 1 and the lower template 2, and then applying pressure on the upper template 1 for pressing.

When pressure is applied to the upper template 1, the pressing block moves downwards, the conductive silica gel 7 generates plastic deformation and is combined with the PI film 8, and the SMT conductive foam is obtained.

In conclusion, the pressing jig provided by the invention is simple and reliable in structure, easy to assemble and suitable for processing SMT conductive foam.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. The pressing jig is characterized by further comprising a pressing piece, a core piece and two middle templates, wherein the core piece is used for fixing a structure to be pressed, the two middle templates are used for accommodating the core piece, the first accommodating position is matched with the core piece, the pressing piece is arranged between the core piece and the upper template, the two middle templates are respectively arranged on two opposite sides of the pressing piece, and the two middle templates respectively support and hold the pressing piece.

2. The pressing jig according to claim 1, further comprising two cushion blocks, wherein the two cushion blocks are respectively disposed at two ends of the core member.

3. The press-fit jig according to claim 1, wherein the pressing member has a funnel-shaped cross-sectional shape.

4. The pressing jig according to claim 3, wherein a shape of a side surface of the middle template close to the pressing member is matched with a shape of a side surface of the pressing member.

5. The pressing jig according to claim 1, wherein a second accommodating position is arranged on the lower template, the first accommodating position is arranged in the middle of the second accommodating position, and the two middle templates are arranged in the second accommodating position.

6. A press-fit jig according to claim 5, wherein the second accommodating portion is provided with a first guide member, and the middle plate is provided with a first guide hole for engaging with the first guide member.

7. A press-fit jig according to claim 1, wherein the lower plate is provided with a second guide member, and the upper plate is provided with a second guide hole engaged with the second guide member.

8. A press-fit jig according to claim 1, wherein handles are respectively provided on two opposite side surfaces of the lower template.

9. A press-fit jig according to claim 1, wherein a notch structure is provided on one side of the lower template close to the upper template.

10. A press-fit jig according to claim 2, wherein the cushion block is made of metal.