A pressure maintaining device for PCB

Abstract

The utility model relates to a kind of pressure maintaining device for PCB, including base, product fixture connected on base, presser plate being set above product fixture by support and lifting assembly for driving presser plate lifting connected on support, installation slot is equipped on product fixture, back glue support block is equipped in installation slot, glue pad support boss is fixed on base, the top end of glue pad support boss is penetrated into installation slot, product fixture is liftable by guide rod and set on base, second lifting assembly for driving product fixture lifting is connected on base.When product fixture is in low position, glue pad support boss cooperates with presser plate to maintain pressure on the glue pad area of PCB, after second lifting assembly drives product fixture to rise, glue pad support boss exits installation slot, back glue support block cooperates with presser plate, and the back glue area of PCB is maintained pressure, and by twice pressure maintaining, it can ensure that the back glue and glue pad of PCB are well pressed, so as to ensure the bonding quality of PCB and glass.

Description

Technical Field

[0001] This utility model relates to the field of pressure holding technology, and in particular to a pressure holding device for PCBs. Background Technology

[0002] In product assembly, bonding processes such as dispensing and applying double-sided tape are frequently involved. Pressure-holding devices are needed to apply pressure to the bonded areas until the adhesive cures, ensuring stable assembly. When bonding PCBs to glass, the central area of ​​the PCB is convex, so adhesive is typically applied to the central area, and adhesive pads are applied to the four corners. After the glass is bonded to the PCB, pressure is applied using a pressure-holding device. Since the adhesive pads are soft materials, there is a height difference between their surface and the adhesive surface. Existing pressure-holding devices often use two planes to press against the PCB, which only provides good pressure holding for the adhesive area, while poor bonding occurs at the corners of the PCB. Therefore, this invention proposes a pressure-holding device for PCBs. Utility Model Content

[0003] The main objective of this invention is to provide a pressure-holding device for PCBs to solve the problems mentioned in the background art.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a pressure holding device for PCB, comprising a base, a product fixture connected to the base, a pressure plate mounted above the product fixture via a bracket, and a lifting assembly connected to the bracket for driving the pressure plate to rise and fall. The product fixture is provided with a mounting groove, and an adhesive support block is provided in the mounting groove. An adhesive pad support protrusion is fixed on the base, and the top end of the adhesive pad support protrusion penetrates into the mounting groove. The product fixture can be raised and lowered on the base via a guide rod. A second lifting assembly for driving the product fixture to rise and fall is connected to the base.

[0005] Preferably, the bracket is U-shaped, the lifting assembly includes a plurality of vertically arranged guide rods, the top end of the guide rods passes through the top end of the bracket, the bottom end of the plurality of guide rods is connected to a connecting plate, the pressure plate is disposed at the bottom end of the connecting plate, and the top end of the bracket is connected to a first cylinder for driving the connecting plate to lift.

[0006] Preferably, the second lifting assembly includes side plates horizontally disposed on both sides of the base, a second cylinder with its output end facing the base is connected to the side plates, the end of the push rod of the second cylinder is connected to a U-shaped clamp, the inner side of the U-shaped clamp is rotatably provided with an axially horizontally disposed roller, a top block is fixed to the lower end face of the product fixture, the bottom end of the top block is provided with an inclined surface near the second cylinder, and the roller abuts against the inclined surface.

[0007] Preferably, it further includes a horizontal moving module, the base is connected to the horizontal moving module and moves horizontally under the drive of the horizontal moving module, and the bracket straddles the horizontal moving module.

[0008] The beneficial effects of this utility model are as follows: A rubber pad support protrusion is provided on the base and extends into the mounting groove. When the product fixture is in a low position, the rubber pad support protrusion cooperates with the pressure plate to maintain pressure on the rubber pad area of ​​the PCB. After the second lifting component drives the product fixture to rise, the rubber pad support protrusion exits the mounting groove. The adhesive support block cooperates with the pressure plate to maintain pressure on the adhesive backing area of ​​the PCB. Through two pressure maintenance, it can be ensured that the adhesive backing and rubber pad of the PCB are well pressed together, thereby ensuring the bonding quality between the PCB and the glass. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a pressure holding device for PCBs, as shown in the embodiment.

[0010] Figure 2 This is a schematic diagram of the product fixture structure.

[0011] Figure 3 This is a schematic diagram of the second lifting component.

[0012] The numbers in the diagram represent: 1. Base; 2. Product jig; 3. Bracket; 4. Pressure plate; 5. Lifting assembly; 6. Mounting slot; 7. Adhesive-backed support block; 8. Adhesive pad support protrusion; 9. Guide rod; 10. Second lifting assembly; 11. Guide rod; 12. Connecting plate; 13. First cylinder; 14. Side plate; 15. Second cylinder; 16. U-shaped clamp; 17. Roller; 18. Top block; 19. Inclined surface; 20. Horizontal movement module. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments.

[0014] Example: like Figure 1-3As shown, this utility model discloses a pressure-holding device for PCBs, including a base 1, a product fixture 2 connected to the base 1, a pressure plate 4 mounted above the product fixture 2 via a bracket 3, and a lifting assembly 5 connected to the bracket 3 for driving the pressure plate 4 to rise and fall. The product fixture 2 has a mounting groove 6, and an adhesive backing support block 7 is provided within the mounting groove 6. An adhesive pad support protrusion 8 is fixed on the base 1, with the top end of the adhesive pad support protrusion 8 penetrating into the mounting groove 6. The product fixture 2 can be raised and lowered on the base 1 via a guide rod 9. A second lifting assembly 10 for driving the product fixture 2 to rise and fall is connected to the base 1. Initially, the product fixture 2 is in a low position, and the adhesive backing support block 7 is positioned above the pressure plate 4 via a bracket 3. The pad support protrusion 8 protrudes into the mounting groove 6. The assembled PCB and glass are placed into the product fixture 2. The lifting component 5 drives the pressure plate 4 to descend. The pressure plate 4 cooperates with the pad support protrusion 8 to press against the area where the pad is located on the upper end surface of the glass and the lower end surface of the PCB, thereby first maintaining pressure on the pad. After the pad is pressurized, the second lifting component 10 drives the product fixture 2 to rise. The lifting component 5 drives the pressure plate 4 to rise in coordination. The pad support protrusion 8 exits the mounting groove 6. The pressure plate 4 and the adhesive backing support block 7 cooperate to press against the adhesive backing area of ​​the PCB, thereby ensuring that both the adhesive backing and the pad achieve good pressure retention.

[0015] The bracket 3 is U-shaped, and the lifting assembly 5 includes a plurality of vertically arranged guide rods 11. The top end of the guide rods 11 passes through the top end of the bracket 3, and the bottom end of the plurality of guide rods 11 is connected to a connecting plate 12. The pressure plate 4 is located at the bottom end of the connecting plate 12. The top end of the bracket 3 is connected to a first cylinder 13 for driving the connecting plate 12 to lift and lower. The first cylinder 13 drives the connecting plate 12 to move the pressure plate 4 downward to press down on the upper surface of the glass to maintain pressure.

[0016] The second lifting assembly 10 includes side plates 14 horizontally disposed on both sides of the base 1. A second cylinder 15 with its output end facing the base 1 is connected to the side plate 14. The end of the push rod of the second cylinder 15 is connected to a U-shaped clamp 16. A roller 17 is rotatably disposed on the inner side of the U-shaped clamp 16 and is arranged horizontally in the axial direction. A top block 18 is fixed to the lower end face of the product fixture 2. An inclined surface 19 is provided on the bottom end of the top block 18 near the side of the second cylinder 15. The roller 17 abuts against the inclined surface 19. The push rod of the second cylinder 15 extends out, and the U-shaped clamp 16 drives the roller 17 to push the inclined surface 19, thereby pushing the top block 18 upward, thus driving the product fixture 2 to rise. After the push rod of the second cylinder 15 retracts, the product fixture 2 returns to its original position.

[0017] It also includes a horizontal moving module 20, the base 1 is connected to the horizontal moving module 20 and moves horizontally under the drive of the horizontal moving module 20, the bracket 3 straddles the horizontal moving module 20, and the product fixture 2 is sent under the pressure plate 4 through the horizontal moving module 20, thereby facilitating the loading and unloading of PCB products.

[0018] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A pressure holding device for PCBs, characterized in that: The device includes a base, a product fixture connected to the base, a pressure plate mounted above the product fixture via a bracket, and a lifting assembly connected to the bracket for driving the pressure plate to rise and fall. The product fixture has a mounting groove with an adhesive-backed support block inside. A rubber pad support protrusion is fixed on the base, with the top end of the rubber pad support protrusion penetrating into the mounting groove. The product fixture can be raised and lowered on the base via a guide rod. A second lifting assembly for driving the product fixture to rise and fall is connected to the base.

2. The pressure holding device for PCB according to claim 1, characterized in that: The bracket is U-shaped, and the lifting assembly includes multiple vertically arranged guide rods. The top end of each guide rod passes through the top end of the bracket, and the bottom end of each guide rod is connected to a connecting plate. The pressure plate is located at the bottom end of the connecting plate, and the top end of the bracket is connected to a first cylinder for driving the connecting plate to lift.

3. The pressure holding device for PCB according to claim 1, characterized in that: The second lifting assembly includes side plates horizontally disposed on both sides of the base. A second cylinder with its output end facing the base is connected to the side plate. The end of the push rod of the second cylinder is connected to a U-shaped clamp. The inner side of the U-shaped clamp is rotatably provided with an axially horizontally disposed roller. A top block is fixed to the lower end face of the product fixture. The bottom end of the top block is provided with an inclined surface on the side near the second cylinder. The roller abuts against the inclined surface.

4. A pressure-holding device for PCBs according to claim 2, characterized in that: It also includes a horizontal moving module, the base is connected to the horizontal moving module and moves horizontally under the drive of the horizontal moving module, and the bracket straddles the horizontal moving module.

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