Pressing jig

Abstract

The utility model provides a press-fit jig which comprises a lower die, an upper die, a lower die, an upper die, an upper die and a lower die. The upper die is arranged above the lower die, the upper die comprises an upper die main body and an elastic pressing die, the upper die main body is provided with a product pressing area, the product pressing area faces the product bearing groove, the product pressing area is provided with a through hole penetrating through the upper die main body, and the elastic pressing die is arranged on the upper die main body. The elastic pressing die comprises a pressing head, a positioning pin, an elastic piece and a fixing piece, the pressing head and the positioning pin are connected through the elastic piece, the positioning pin penetrates through the through hole and can move in the through hole, the pressing head is located between the upper die body and the lower die body, and the fixing piece is located on the side, away from the lower die body, of the upper die body. The positioning rod is detachably connected with the positioning pin; and the upper die main body is detachably fixed on the lower die main body through the fixing device. The pressing jig can improve the air tightness of products and improve the yield of the products.

Description

Technical Field

[0001] The utility model relates to the field of semiconductor packaging, in particular to a pressing jig. Background Art

[0002] Cavity packaging technology has been widely used in the packaging of some semiconductor chips, especially RF chips, due to its better RF performance and lower dielectric constant. Cavity packaging products use a cover plate with glue as the upper cover instead of the encapsulation, which needs to be heated and pressurized after the cover is applied. Usually, a pressure oven is used for heating and pressurizing. However, the products after pressurization and baking may have problems such as cover plate offset, non-pressing, and air leakage in the glue layer, making the airtightness of the products after pressurization and baking unsatisfactory. This limits the application of the pressure oven heating and pressurizing method.

[0003] Therefore, how to improve the air tightness of the product becomes a technical problem that needs to be solved. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a pressing jig which can improve the air tightness of the product.

[0005] In order to solve the above problems, an embodiment of the present utility model provides a pressing jig, including: a lower mold, including a lower mold body, and the lower mold body has a product carrying groove; an upper mold, arranged above the lower mold, the upper mold including an upper mold body and an elastic pressing mold, the upper mold body has a product pressing area, the product pressing area faces the product carrying groove, and the product pressing area has a through hole passing through the upper mold body, the elastic pressing mold includes a pressure head, a positioning pin, an elastic part connecting the pressure head and the positioning pin, and a fixing part, the positioning pin passes through the through hole and can move in the through hole, the pressure head is located between the upper mold body and the lower mold body, the fixing part is located on the side of the upper mold body away from the lower mold body, and is detachably connected to the positioning pin; a fixing device, the upper mold body is detachably fixed to the lower mold body through the fixing device.

[0006] In one embodiment, a surface of the upper mold body facing the lower mold body has a groove, and the groove serves as the product pressing area.

[0007] In one embodiment, the surface of the upper mold body facing the lower mold body is a flat plate, and the area of ​​the flat plate corresponding to the product carrying groove serves as the product pressing area.

[0008] In one embodiment, the elastic member is a spring.

[0009] In one embodiment, the fixing member is rotatably fixed to the side of the upper mold body facing away from the lower mold body, the positioning pin has a thread, the fixing member is screwed to the positioning pin, and the relative position of the positioning pin and the upper mold body is changed by twisting the fixing member.

[0010] In one embodiment, the fixing device includes: a fixing pin with a thread, which is arranged on the surface of the lower mold body facing the upper mold body; a fixing hole, which passes through the upper mold body, and the fixing pin passes through the fixing hole; and a locking screw, which is threadedly connected to the fixing pin to detachably fix the upper mold body to the lower mold body.

[0011] In one embodiment, the fixing device includes a quick-pressing clamp, which is fixed to both sides of the lower mold body and presses the surface of the upper mold body facing away from the lower mold body.

[0012] In one embodiment, the quick pressing clamp includes a base, a driven rod, a connecting rod, a pressure rod and a pressure platform. The base is fixed on the surface of the lower mold body, the driven rod is rotatably fixed to the base, one end of the connecting rod is rotatably fixed to the driven rod, and the other end is rotatably fixed to the pressure rod. The pressure rod is rotatably fixed to the base, and the pressure platform is located above the upper mold body. The upward lifting process of the driven rod drives the connecting rod to press the pressure rod downward, so that the pressure platform presses against the upper mold body, thereby pressing the upper mold and the lower mold together.

[0013] In one embodiment, one of the lower mold body or the upper mold body has an anti-foolproof hole, and the other of the lower mold body or the upper mold body has an anti-foolproof column, and the anti-foolproof column is inserted into the anti-foolproof hole.

[0014] In one embodiment, a product inlet is formed on one side of the product carrying tank.

[0015] The pressing jig provided by the embodiment of the present invention realizes the pressing of the product through the cooperation of the lower mold, the upper mold and the fixing device. When using the pressing jig provided by the embodiment of the present invention to press the product, the product is placed in the product bearing groove and fixed, and the fixing device presses the upper mold and the lower mold together. There is a corresponding elastic pressing mold above each product, and the pressure applied to the product is controlled by the elastic part on the elastic pressing mold, so that each product can be pressed together, which significantly reduces the cover plate offset, non-pressing and glue layer leakage, and improves the product yield; and the elasticity of the elastic part can be controlled to control the pressure applied to the product, thereby realizing the control of the thickness of the product glue layer, further improving the airtightness of the product. The method is simple and easy to implement and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0017] Figure 1 This is a general structural diagram of a pressing fixture provided by an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the use of a pressing jig provided in one embodiment of the present utility model;

[0019] Figure 3 This is a schematic top view of the lower die of the pressing jig provided in one embodiment of the present utility model;

[0020] Figure 4 It is along Figure 3 Cross-section of line A-A1;

[0021] Figure 5 It's along the way Figure 3 Cross-section of line B-B1;

[0022] Figure 6 This is a schematic top view of an upper die of a pressing jig provided in one embodiment of the present invention;

[0023] Figure 7 along Figure 6 Cross-sectional view along line C-C1;

[0024] Figure 8 1 is a schematic cross-sectional view of an upper die of a pressing jig provided in another embodiment of the present invention;

[0025] Figure 9 It is a schematic diagram of a fixing device of a pressing jig provided in yet another embodiment of the present invention. DETAILED DESCRIPTION

[0026] The specific implementation of the pressing fixture provided by the utility model is described in detail below with reference to the accompanying drawings.

[0027] Figure 1 This is a general structural diagram of a pressing fixture provided by an embodiment of the present invention. Figure 2 This is a schematic diagram of the use of a pressing fixture provided by an embodiment of the present utility model. Figure 3 1 is a top view of a lower die 100 of a pressing jig provided by an embodiment of the present invention. Figure 4 It is along Figure 3 The cross-section of line A-A1, Figure 5 It's along the way Figure 3The cross-section of line B-B1, Figure 6 2 is a top view of an upper die 200 of a pressing jig provided by an embodiment of the present invention. Figure 7 along Figure 6 Cross-sectional view along line C-C1.

[0028] See also Figures 1 to 4 The pressing fixture includes: a lower mold 100, including a lower mold body 110, the lower mold body 110 has a product bearing groove 120; an upper mold 200, arranged above the lower mold 100, the upper mold 200 includes an upper mold body 210 and an elastic pressing mold 220, the upper mold body 210 has a product pressing area 230, the product pressing area 230 faces the product bearing groove 120, the product pressing area 230 has a through hole 240 that passes through the upper mold body 210, the elastic pressing mold 220 includes a pressing head 221, a positioning pin 222, a connecting pin 223, and a connecting pin 224. The ram 221 and the elastic part 223 and the fixing part 224 of the positioning pin 222, the positioning pin 222 passes through the through hole 240 and can move in the through hole 240, the ram 221 is located between the upper mold body 210 and the lower mold body 110, the fixing part 224 is located on the side of the upper mold body 210 away from the lower mold body 110, and is detachably connected to the positioning pin 222; the fixing device 250, the upper mold body 210 is detachably fixed to the lower mold body 110 through the fixing device 250.

[0029] When using the pressing jig provided by the embodiment of the present invention to press products, the product to be pressed is placed in the product bearing groove 120 and fixed, and the fixing device 250 presses the upper mold 200 with the lower mold 100. There is a corresponding elastic pressing mold 220 above each product. The pressure applied to the product is controlled by the elastic member 223 on the elastic pressing mold 220, thereby ensuring that each product is pressed, significantly reducing the cover plate offset, non-pressing and glue layer leakage, and improving the product yield; and the elastic control of the elastic member 223 can control the pressure applied to the product, thereby achieving the control of the product glue layer thickness, further improving the product's airtightness, and the method is simple and easy to implement, and easy to promote. The pressing jig provided by the embodiment of the present invention can be used for pressing cavity packaging products.

[0030] The lower mold 100 is used to support products. Specifically, the products to be pressed are placed in the product holding groove 120. In some embodiments, the product structure to be pressed includes a frame 400 and a single product 410 disposed on the frame 400. The frame 400 is placed in the product holding groove 120, with the single product 410 facing the upper mold 200. In some embodiments, the bottom surface of the product holding groove 120 is flat to ensure uniform pressing of the single product 410. The depth of the product holding groove 120 can be set according to the thickness of the product structure to be pressed.

[0031] In some embodiments, see Figure 5 The product loading slot 120 has a product inlet 121 on one side, and the product structure to be pressed is loaded into the product loading slot 120 from the product inlet 121. The side wall of the product loading slot 120 is used to limit the product structure to be pressed. In some embodiments, please refer to Figure 3 A product extraction notch 122 is provided at the product entrance 121. When the pressing is completed and the product needs to be taken out, the product can be taken out by clamping the edge of the product at the product extraction notch 122.

[0032] The upper mold 200 is used to press the product together. The upper mold body 210 is pressed against the lower mold body 110, and the elastic pressing mold 220 applies pressure to the product, thereby pressing the product together. The upper mold body 210 has a product pressing area 230, which faces the product holding groove 120. When the product to be pressed is placed in the pressing jig, the individual product 410 can be aligned with the product pressing area 230, and the elastic pressing mold 220 applies pressure to the individual product 410.

[0033] In some embodiments, as Figure 1 and Figure 7 As shown, the upper mold body 210 has a groove 700 on the surface facing the lower mold body 110. The groove 700 serves as the product pressing area 230. The through hole 240 runs through the bottom of the groove 700, and the elastic pressing mold 220 passes through the through hole 240. After the upper mold 200 and the lower mold 100 are pressed together, the groove 700 is used to accommodate the pressing head 221 of the elastic pressing mold 220, providing a large space for the movement of the pressing head 221, further improving the controllability of the pressure of the elastic pressing mold 220.

[0034] In other embodiments, Figure 8, which is a schematic cross-sectional view of an upper mold 200 of a pressing jig provided by another embodiment of the present invention. In this embodiment, the surface of the upper mold body 210 facing the lower mold body 110 is a flat plate. The area of ​​the flat plate corresponding to the product-carrying groove 120 serves as the product pressing area 230. The through hole 240 penetrates the upper mold body 210, and the elastic pressing mold 220 passes through the through hole 240. The pressing head 221 protrudes from the surface of the upper mold body 210. After the upper mold 200 and the lower mold 100 are pressed together, the distance between the elastic pressing mold 220 and the single product 410 is small, which can increase the pressure of the elastic pressing mold 220 on the single product 410 and further improve the airtightness of the product.

[0035] The number of the elastic pressing molds 220 may be determined according to the number of the individual products 410 of the product, and the elastic pressing molds 220 correspond to the individual products 410 one by one.

[0036] The elastic pressing mold 220 includes a pressing head 221, a positioning pin 222, an elastic member 223 connecting the pressing head 221 and the positioning pin 222, and a fixing member 224. The pressing head 221 is used to press against the single product 410. The positioning pin 222 passes through the through hole 240 and is elastically connected to the pressing head 221 via the elastic member 223. The fixing member 224 is detachably connected to the positioning pin 222 to secure the positioning pin 222. After the upper mold 200 and the lower mold 100 are pressed together, the positioning pin 222 is pushed, which drives the elastic member 223 to move, which in turn drives the pressing head 221 to move. The pressing head 221 presses against the single product 410. The pressure of the positioning pin 222 on the elastic member 223 is adjusted, thereby adjusting the pressure of the pressing head 221 on the single product 410. When the appropriate pressure is reached, the fixing member 224 secures the positioning pin 222.

[0037] In some embodiments, the positioning pin 222 is threaded, and the fixing member 224 is rotatably fixed to the side of the upper mold body 210 facing away from the lower mold body 110. That is, the fixing member 224 can rotate relative to the upper mold body 210 while being fixed to the upper mold body 210. The fixing member 224 is threadedly connected to the positioning pin 222. By twisting the fixing member 224, the relative position of the positioning pin 222 and the upper mold body 210 is changed, thereby pushing the positioning pin 222. In one embodiment, the elastic member 223 is a spring. In other embodiments, the elastic member 223 can also be a spring or other structure.

[0038] The fixing device 250 is used to detachably fix the upper mold body 210 to the lower mold body 110 , and the upper mold body 210 and the lower mold body 110 can be pressed together by the fixing device 250 .

[0039] In some embodiments, as Figure 1 As shown, the fixing device 250 includes: a threaded fixing pin 251, which is disposed on the surface of the lower mold body 110 facing the upper mold body 210; a fixing hole 252 extending through the upper mold body 210, through which the fixing pin 251 passes; and a locking screw 253, which is threadedly engaged with the fixing pin 251 to removably secure the upper mold body 210 to the lower mold body 110. In some embodiments, multiple fixing devices 250 are disposed around the periphery of the pressing jig to ensure uniform pressing of the pressing jig.

[0040] In other embodiments, the present invention also provides another fixing device. Figure 9 , which is a schematic diagram of a fixing device for a pressing jig according to another embodiment of the present invention. In this embodiment, the fixing device includes quick-clamping clamps 900, which are fixed to both sides of the lower mold body 110 and press the surface of the upper mold body 210 facing away from the lower mold body 110. This fixing device can quickly clamp and press the upper mold 200 and the lower mold 100 on both sides of the pressing jig, reducing the impact of multiple tightening on the product's adhesive layer, while streamlining the pressing steps and improving work efficiency. In one embodiment, the quick-press clamp 900 includes a base 901, a driven rod 902, a connecting rod 903, a pressure rod 904, and a pressure platform 905. The base 901 is fixed to the surface of the lower mold body 110, the driven rod 902 is rotatably fixed to the base 901, one end of the connecting rod 903 is rotatably fixed to the driven rod 902, and the other end is rotatably fixed to the pressure rod 904. The pressure rod 904 is also rotatably fixed to the base 901. The pressure platform 905 is located above the upper mold body 210. When the driven rod 902 is lifted upward, the connecting rod 903 drives the pressure rod 904 downward, thereby realizing that the pressure platform 905 presses against the upper mold body 210, thereby pressing the upper mold 200 and the lower mold 100 together. The pressure platform 905 is fixed to the pressure rod 904 by a fixing member, and the fixing member can be a combination of a stud 906 and a nut 907. In one embodiment, the pressing platform 905 is made of elastic material, such as rubber.

[0041] In some embodiments, one of the lower mold body 110 or the upper mold body 210 has an anti-fouling hole 500, and the other of the lower mold body 110 or the upper mold body 210 has an anti-fouling column 510, which is inserted into the anti-fouling hole 500 to achieve positioning of the upper mold body 210 and the lower mold body 110. For example, please continue to refer to Figures 1 to 7 In this embodiment, the upper mold body 210 has a foolproof hole 500, and the lower mold body 110 has a foolproof column 510. In other embodiments, the lower mold body 110 has a foolproof hole 500, and the upper mold body 210 has a foolproof column 510.

[0042] In some embodiments, the pressing jig has two anti-foolproofing columns 510, and the two anti-foolproofing columns 510 are diagonally arranged. Correspondingly, the pressing jig has two anti-foolproofing holes 500, and the two anti-foolproofing holes 500 are diagonally arranged.

[0043] The pressing fixture provided by the embodiment of the present invention can reduce the cover plate deviation, non-pressing and adhesive layer leakage of the product, thereby improving the product yield.

[0044] It should be noted that the terms "including" and "having" and their variations used in the present invention are intended to cover non-exclusive inclusions. The terms "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence, unless the context clearly indicates otherwise. It should be understood that the terms used in this manner are interchangeable where appropriate. The term "one or more" may be used to describe a feature, structure, or characteristic in the singular, or in the plural, depending at least in part on the context. The term "based on" may be understood as not necessarily intended to express an exclusive set of factors, but may alternatively, also at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described. In addition, the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict. In addition, in the above description, descriptions of well-known components and technologies have been omitted to avoid unnecessary confusion about the concepts of the present invention. In the above embodiments, each embodiment focuses on the differences from the other embodiments, and the same / similar parts between the embodiments can be referred to in detail.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pressing jig, characterized in that: include: A lower mold, comprising a lower mold body having a product carrying groove; an upper mold, arranged above the lower mold, comprising an upper mold body and an elastic pressing mold, the upper mold body having a product pressing area, the product pressing area facing the product carrying groove, the product pressing area having a through hole penetrating the upper mold body, the elastic pressing mold comprising a pressing head, a positioning pin, an elastic member connecting the pressing head and the positioning pin, and a fixing member, the positioning pin passing through the through hole and being movable within the through hole, the pressing head being located between the upper mold body and the lower mold body, the fixing member being located on a side of the upper mold body facing away from the lower mold body, and being detachably connected to the positioning pin; A fixing device, through which the upper mold body is detachably fixed to the lower mold body.

2. The pressing jig according to claim 1, characterized in that: The surface of the upper mold body facing the lower mold body has a groove, and the groove serves as the product pressing area.

3. The pressing jig according to claim 1, characterized in that: The surface of the upper mold body facing the lower mold body is a flat plate, and the area of ​​the flat plate corresponding to the product carrying groove serves as the product pressing area.

4. The pressing jig according to claim 1, characterized in that: The elastic member is a spring.

5. The pressing jig according to claim 1, characterized in that: The fixing member is rotatably fixed to the side of the upper mold body away from the lower mold body, the positioning pin has a thread, and the fixing member is screwed to the positioning pin. The relative position of the positioning pin and the upper mold body is changed by twisting the fixing member.

6. The pressing jig according to claim 1, characterized in that: The fixing device comprises: a fixing pin having a thread, wherein the fixing pin is arranged on a surface of the lower mold body facing the upper mold body; a fixing hole, passing through the upper mold body, and the fixing pin passes through the fixing hole; A locking screw is threadedly connected to the fixing pin to detachably fix the upper mold body to the lower mold body.

7. The pressing jig according to claim 1, characterized in that: The fixing device includes a quick pressing clamp, which is fixed on both sides of the lower mold body and presses the surface of the upper mold body away from the lower mold body.

8. The pressing jig according to claim 7, characterized in that: The quick pressing clamp includes a base, a driven rod, a connecting rod, a pressure rod and a pressure platform. The base is fixed on the surface of the lower mold body, the driven rod is rotatably fixed to the base, one end of the connecting rod is rotatably fixed to the driven rod, and the other end is rotatably fixed to the pressure rod. The pressure rod is rotatably fixed to the base, and the pressure platform is located above the upper mold body. The upward lifting process of the driven rod drives the connecting rod to press the pressure rod downward, so that the pressure platform presses against the upper mold body, thereby pressing the upper mold and the lower mold together.

9. The pressing jig according to claim 1, characterized in that: One of the lower mold body or the upper mold body has an anti-foolproof hole, and the other of the lower mold body or the upper mold body has an anti-foolproof column, and the anti-foolproof column is inserted into the anti-foolproof hole.

10. The pressing jig according to claim 1, characterized in that: One side of the product carrying tank is provided with a product inlet.

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