Vacuum pressure maintaining tool

Abstract

The utility model discloses a vacuum pressure maintaining tool, which belongs to the field of pressure maintaining tools and comprises a rack and a control button, the control button is fixedly mounted on the front side of the rack, a tool main body is fixedly mounted on the upper side of the rack, a mounting rack is fixedly mounted on the upper side of the rack, a positioning plate is fixedly mounted on the front side of the mounting rack, and the positioning plate is fixedly mounted on the front side of the mounting rack. A hydraulic telescopic rod is fixedly installed on the front side of the positioning plate, two sets of fixing plates are fixedly installed on the front side of the lower end of the mounting frame, guide rods are movably inserted into the two sets of fixing plates, and pressing plates are fixedly installed at the lower end of the hydraulic telescopic rod and the lower ends of the two sets of guide rods. Through cooperative use of the devices, pressure maintaining is conducted on the glass sheet and the membrane, then the vacuum pump conducts vacuumizing treatment on the interior of the vacuum cavity through the vacuum pipe, the pressure maintaining effect and the sealing performance are remarkably improved, and bubbles between the glass sheet and the membrane after membrane pasting can be more effectively removed in the pressure maintaining process.

Description

Technical Field

[0001] This utility model relates to the field of pressure holding tooling technology, specifically a vacuum pressure holding tooling. Background Technology

[0002] In the production and assembly of electronic products such as mobile phones and tablets, the mounting of components such as glass sheets, films, adhesives, and foams is involved. For example, in the screen manufacturing process, films need to be attached to glass sheets, and then adhesives and foams are attached to assemble the film-covered glass sheets with other components. After the film or adhesive is applied to the glass sheet, in order to maintain the mounting stability and improve the yield, a pressure holding process is required, which involves applying downward pressure to the mounted product for a period of time.

[0003] With the continuous development of modern industrial technology, the requirements for vacuum pressure holding technology are also getting higher and higher. In the existing vacuum pressure holding devices, for the glass sheet pressure holding process after film application, there may be air bubbles between the glass sheet and the film, resulting in problems such as poor pressure holding effect and unstable sealing performance, which seriously affects product quality and production efficiency.

[0004] Therefore, this utility model provides a vacuum pressure holding fixture to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a vacuum pressure holding fixture, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a frame and control buttons. The control buttons are fixedly installed on the front side of the frame. A tooling body is fixedly installed on the upper side of the frame. A mounting frame is fixedly installed on the upper side of the frame. A positioning plate is fixedly installed on the front side of the mounting frame. A hydraulic telescopic rod is fixedly installed on the front side of the positioning plate. Two sets of fixing plates are fixedly installed on the lower front side of the mounting frame. Guide rods are movably inserted into the two sets of fixing plates. Pressure plates are fixedly installed on the lower end of the hydraulic telescopic rod and the lower ends of the two sets of guide rods. A vacuum pump is fixedly installed inside the frame. A vacuum tube is fixedly installed between the left end of the vacuum pump and the left end of the tooling body. A vacuum chamber is provided inside the pressure plate. A sealing strip is glued to the upper side of the tooling body. A sealing cover is fixedly installed on the upper side of the pressure plate.

[0009] As a preferred technical solution of this application, a pressure relief pipe is fixedly installed on the left end of the tooling body, the pressure relief pipe is fixedly connected to the upper end of the vacuum tube, and a pressure relief valve is fixedly installed on the left end of the pressure relief pipe.

[0010] As a preferred technical solution of this application, a pressure sensor is fixedly installed on the left end of the tooling body, and the pressure sensor is interconnected with the control mechanism and pressure relief valve inside the frame.

[0011] As a preferred technical solution of this application, a pressure gauge is fixedly installed on the right end of the tooling body, and the lower end of the pressure gauge is located in a vacuum chamber.

[0012] As a preferred technical solution of this application, the front-to-back width of the pressure plate matches the upper opening of the vacuum chamber, and the front-to-back and left-to-right width of the sealing cover is the same as the front-to-back and left-to-right width of the pressure plate.

[0013] As a preferred technical solution of this application, multiple sets of bases are fixed to the lower side of the frame, and the lower side of each set of bases is glued with an anti-slip pad made of rubber.

[0014] (III) Beneficial Effects

[0015] The glass sheet and diaphragm are placed into the vacuum chamber. As the hydraulic telescopic rod moves the pressure plate and sealing cover down to fit against the fixture body and the opening of the vacuum chamber, pressure is maintained on the glass sheet and diaphragm. Then, the vacuum pump evacuates the vacuum chamber through the vacuum tube, which significantly improves the pressure holding effect and sealing performance. This allows for more effective elimination of air bubbles between the glass sheet and diaphragm after the film is applied during the pressure holding process, thereby ensuring that the applied product has higher stability and yield. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a vacuum pressure holding tool;

[0017] Figure 2 This is a front view cross-sectional diagram of a vacuum pressure holding tool;

[0018] Figure 3 This is a front view schematic diagram of the mounting bracket in a vacuum pressure holding tool;

[0019] Figure 4 This is a front view schematic diagram of a vacuum pump in a vacuum pressure holding fixture.

[0020] In the picture:

[0021] 1. Frame; 2. Control button; 3. Tooling body; 4. Mounting frame; 5. Positioning plate; 6. Hydraulic telescopic rod; 7. Fixing plate; 8. Guide rod; 9. Pressure plate; 10. Vacuum pump; 11. Vacuum tube; 12. Vacuum chamber; 13. Sealing strip; 14. Sealing cover; 15. Pressure relief pipe; 16. Pressure relief valve; 17. Pressure sensor; 18. Pressure gauge; 19. Base. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a vacuum pressure holding fixture, such as Figure 1-4 As shown, the vacuum pressure holding fixture includes a frame 1 and a control button 2. The control button 2 is fixedly installed on the front side of the frame 1. The fixture body 3 is fixedly installed on the upper side of the frame 1. The mounting frame 4 is fixedly installed on the upper side of the frame 1. The positioning plate 5 is fixedly installed on the front side of the mounting frame 4. The hydraulic telescopic rod 6 is fixedly installed on the front side of the positioning plate 5. Two sets of fixing plates 7 are fixedly installed on the lower front side of the mounting frame 4. Guide rods 8 are movably inserted into the two sets of fixing plates 7. The lower end of the hydraulic telescopic rod 6 and the lower end of the two sets of guide rods 8 are fixedly installed with pressure plates 9. The vacuum pump 10 is fixedly installed inside the frame 1. A vacuum tube 11 is fixedly installed between the left end of the vacuum pump 10 and the left end of the fixture body 3. A vacuum chamber 12 is provided inside the pressure plate 9. A sealing strip 13 is glued to the upper side of the fixture body 3. A sealing cover 14 is fixedly installed on the upper side of the pressure plate 9.

[0024] First, the glass sheet and diaphragm to be pressurized are placed in the vacuum chamber 12. Then, the hydraulic telescopic rod 6 drives the pressure plate 9 and the sealing cover 14 to descend as a whole until the sealing cover 14 is tightly fitted with the fixture body 3. At the same time, the lower end face of the pressure plate 9 is also in close contact with the opening edge of the vacuum chamber 12. The sealing strip 13 forms a preliminary sealing structure between the fixture body 3 and the sealing cover 14. At this time, the vacuum pump 10 starts to work and draws air from the inside of the vacuum chamber 12 through the vacuum tube 11, so that a vacuum environment is formed inside the vacuum chamber 12. In the vacuum environment, the air bubbles between the glass sheet and the diaphragm are gradually squeezed and expelled by the external atmospheric pressure, thereby improving the adhesion between the glass sheet and the diaphragm after the film is applied.

[0025] A pressure relief pipe 15 is fixedly installed on the left end of the tooling body 3. The pressure relief pipe 15 is fixedly connected to the upper end of the vacuum tube 11. A pressure relief valve 16 is fixedly installed on the left end of the pressure relief pipe 15.

[0026] When the pressure inside the vacuum chamber 12 exceeds the preset value, the pressure relief valve 16 will automatically open, releasing the excess pressure through the pressure relief pipe 15 to ensure safe operation.

[0027] A pressure sensor 17 is fixedly installed on the left end of the tooling body 3. The pressure sensor 17 is connected to the control mechanism and pressure relief valve 16 inside the frame 1.

[0028] The pressure sensor 17 monitors the pressure value inside the vacuum chamber 12. When the pressure value reaches the preset safe range, the pressure sensor 17 sends a signal to the control mechanism. The control mechanism then adjusts the working state of the vacuum pump 10 according to the signal to ensure the stability and safety of the entire pressure holding process.

[0029] A pressure gauge 18 is fixedly installed on the right end of the tooling body 3, and the lower end of the pressure gauge 18 is located inside the vacuum chamber 12.

[0030] Pressure gauge 18 is used to display the pressure value inside vacuum chamber 12, allowing users to understand the current pressure status inside the sealed chamber.

[0031] The front-to-back width of the pressure plate 9 matches the upper opening of the vacuum chamber 12, and the front-to-back and left-to-right width of the sealing cover 14 is the same as the front-to-back and left-to-right width of the pressure plate 9.

[0032] This ensures a tight fit between the pressure plate 9 and the vacuum chamber 12, as well as between the sealing cover 14 and the tooling body 3, further enhancing the sealing performance of the tooling and avoiding potential air leakage during the vacuuming process, thereby ensuring the stability of the pressure holding effect and sealing performance.

[0033] Multiple sets of bases 19 are fixed to the lower side of the frame 1, and the lower side of each set of bases 19 is glued with anti-slip pads made of rubber.

[0034] The multiple sets of bases 19 and anti-slip pads not only increase the overall stability of the frame 1 and prevent slippage during operation, but also protect the surfaces of the tooling and worktable from damage.

[0035] Working principle: In use, the glass sheet and diaphragm to be pressurized are first placed in the vacuum chamber 12 inside the fixture body 3. Then, the hydraulic telescopic rod 6 drives the pressure plate 9 and the sealing cover 14 to descend as a whole until the sealing cover 14 is tightly fitted with the upper end face of the fixture body 3, and at the same time, the lower end face of the pressure plate 9 is also in close contact with the opening edge of the vacuum chamber 12. At this time, the sealing strip 13 is located between the fixture body 3 and the sealing cover 14, forming a preliminary sealing structure. Subsequently, the vacuum pump 10 starts to work, drawing air out of the vacuum chamber 12 through the vacuum tube 11, so that a vacuum ring is formed inside the vacuum chamber 12. In a vacuum environment, the air bubble between the glass plate and the diaphragm is gradually squeezed and expelled by the external atmospheric pressure. The pressure sensor 17 is used to monitor the pressure value in the vacuum chamber 12 in real time and transmit the monitored pressure value signal to the control mechanism. The control mechanism then adjusts the working state of the vacuum pump 10 according to the received pressure value signal to ensure that the pressure value in the vacuum chamber 12 is always kept within the preset safe range. When the pressure value in the vacuum chamber 12 exceeds the preset safe range, the pressure relief valve 16 will automatically open and release the excess pressure through the pressure relief pipe 15 to ensure safe operation.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum pressure holding fixture, comprising a frame (1) and a control button (2), wherein the control button (2) is fixedly mounted on the front side of the frame (1), characterized in that: The upper side of the frame (1) is fixedly installed with a tooling body (3), the upper side of the frame (1) is fixedly installed with a mounting frame (4), the front side of the mounting frame (4) is fixedly installed with a positioning plate (5), the front side of the positioning plate (5) is fixedly installed with a hydraulic telescopic rod (6), the lower front side of the mounting frame (4) is fixedly installed with two sets of fixing plates (7), the two sets of fixing plates (7) are movably inserted with guide rods (8), the lower end of the hydraulic telescopic rod (6) and the lower end of the two sets of guide rods (8) are fixedly installed with pressure plates (9), the frame (1) is fixedly installed with a vacuum pump (10), the left end of the vacuum pump (10) and the left end of the tooling body (3) are fixedly installed with a vacuum tube (11), the pressure plate (9) is provided with a vacuum chamber (12), the upper side of the tooling body (3) is glued with a sealing strip (13), and the upper side of the pressure plate (9) is fixedly installed with a sealing cover (14).

2. The vacuum pressure holding fixture according to claim 1, characterized in that: A pressure relief pipe (15) is fixedly installed on the left end of the tooling body (3). The pressure relief pipe (15) is fixedly connected to the upper end of the vacuum tube (11). A pressure relief valve (16) is fixedly installed on the left end of the pressure relief pipe (15).

3. The vacuum pressure holding fixture according to claim 1, characterized in that: A pressure sensor (17) is fixedly installed on the left end of the tooling body (3). The pressure sensor (17) is connected to the control mechanism and pressure relief valve (16) in the frame (1).

4. The vacuum pressure holding fixture according to claim 1, characterized in that: A pressure gauge (18) is fixedly installed on the right end of the tooling body (3), and the lower end of the pressure gauge (18) is located in the vacuum chamber (12).

5. The vacuum pressure holding fixture according to claim 1, characterized in that: The front-to-back width of the pressure plate (9) matches the upper opening of the vacuum chamber (12), and the front-to-back and left-to-right width of the sealing cover (14) is the same as the front-to-back and left-to-right width of the pressure plate (9).

6. The vacuum pressure holding fixture according to claim 1, characterized in that: The frame (1) has multiple sets of bases (19) fixed on its lower side, and the lower side of each set of bases (19) is glued with a rubber anti-slip pad.

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