Screen dispensing and assembling compression jig

Abstract

The utility model relates to a point gum assembly press fit technical field, especially a kind of screen point gum assembly press fit fixture, operating platform, the top fixedly connected with mounting frame of operating platform, the outside top of mounting frame is fixedly connected with adjusting mechanism, the rear side fixedly connected with anti-backflow mechanism of operating platform, the adjusting mechanism includes cylinder, the drive end fixedly connected with driving rod of cylinder, the outside bottom end fixedly connected with driving assembly of driving rod, the outside four corners of driving assembly are all slidably connected with distance adjusting lever. The utility model provides a kind of screen point gum assembly press fit fixture, the cooperative structure of distance adjusting lever, sliding clamping rod and mounting spring, effectively solve the problem of poor adaptability of traditional fixture. Pulling sliding clamping rod can drive limit plate extrusion mounting spring, release the fixing of distance adjusting lever, flexibly adjust its position in mounting plate, make press fit plate adapt to different types, thickness of screen and various glue characteristics.

Description

Technical Field

[0001] This utility model relates to the field of dispensing assembly and pressing technology, and in particular to a screen dispensing assembly and pressing fixture. Background Technology

[0002] Pressing fixtures are specialized tools designed for assembling precision components. Through pre-set positioning structures and controllable pressure, they achieve precise fitting and fixation of components, featuring high positioning accuracy and uniform pressure. Their core function is to ensure that components do not shift and adhere tightly during assembly, making them suitable for precision manufacturing scenarios such as electronic devices. They are closely related to screen adhesive assembly. After screen adhesive is applied, components such as the cover plate and touch layer need to be precisely fitted. Relying solely on adhesive strength can easily lead to displacement or uneven adhesion. Pressing fixtures are crucial for ensuring assembly accuracy and bonding strength after adhesive application.

[0003] In existing technologies, some screen dispensing assembly and pressing fixtures achieve precise bonding and firm adhesion of various screen components through the synergistic effect of positioning structure, pressure control, and pressure holding curing. The fixture is pre-set with positioning grooves and limiting posts that match the screen size, first accurately positioning the screen substrate, cover plate, and other components after dispensing to avoid misalignment during assembly; then, the pneumatic or manual drive components apply uniform pressure according to preset parameters to ensure that the components are tightly bonded, expel interface air bubbles, and ensure uniform distribution of adhesive.

[0004] In practical use, some screen dispensing assembly pressing fixtures have poor adaptability and cannot meet the requirements of different screen types, thicknesses, or adhesive properties. Excessive pressure can easily damage the screen and cause dispensing overflow, while insufficient pressure will result in loose bonding, bubbles, delamination, and other defects. Springs will experience elasticity decay over time, and the fixed pressure cannot compensate for the amount of decay, leading to a gradual imbalance in pressure and a continuous decline in product yield. They cannot cope with the need for subtle parameter adjustments in production, such as when changing screen batches or adhesive types, the fixed pressure is easily incompatible with the new working conditions, requiring frequent fixture replacements or repairs, increasing production costs and downtime.

[0005] Therefore, it is necessary to provide a new screen dispensing assembly pressing fixture to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a screen dispensing assembly pressing fixture.

[0007] The present invention provides a screen dispensing assembly and pressing fixture comprising: an operating table, an installation frame fixedly connected to the top of the operating table, an adjustment mechanism fixedly connected to the outer top of the installation frame, and an anti-backflow mechanism fixedly connected to the outer rear side of the operating table. The adjusting mechanism includes a cylinder, a drive rod is fixedly connected to the drive end of the cylinder, a drive assembly is fixedly connected to the outer bottom end of the drive rod, adjustment rods are slidably connected to the four outer corners of the drive assembly, slots are provided on the outer side of the adjustment rods, sliding rods are slidably connected to the left and right sides of the drive assembly, a limit plate is slidably connected to the outer side of the drive assembly, a mounting spring is sleeved on the outer side of the sliding rods, and a return spring is sleeved on the outer side of the slots.

[0008] Preferably, the drive assembly includes a drive rod, the drive rod is externally fixedly connected to the drive end of the cylinder, a mounting plate is externally fixedly connected to the drive rod, the adjusting rod is externally slidably connected to the inside of the mounting plate, the sliding latch is externally slidably connected to the left and right sides of the outside of the mounting plate, the limiting plate is externally slidably connected to the inside of the mounting plate, and a pressing plate is fixedly connected to the bottom of the adjusting rod.

[0009] Preferably, the anti-backflow mechanism includes a glue storage tank, a pump body is fixedly connected to the top of the glue storage tank, an output pipe is fixedly connected to the output end of the pump body, a fixed housing is fixedly connected to the outside of the output pipe, a cross-shaped placement plate is fixedly connected inside the fixed housing, a mounting housing is fixedly connected to the outside of the cross-shaped placement plate, a sliding rod is slidably connected to the outside of the mounting housing, a tension spring is sleeved on the outside of the sliding rod, and a sealing assembly is fixedly connected to the outside of the sliding rod.

[0010] Preferably, the sealing assembly includes a sealing plate, the sealing plate is fixedly connected to the outside of the sliding rod, the sealing plate is fixedly connected to the outside of the sliding rod, and a sealing ring is fixedly connected to the inside of the fixed housing.

[0011] Preferably, a mounting pad is fixedly connected to the top of the operating table, a positioning frame is fixedly connected to the top of the mounting pad, and the outer bottom end of the mounting frame is fixedly connected to the outside of the mounting pad.

[0012] Preferably, a control panel is fixedly connected to the left side of the outer front of the control panel, and multiple buttons are fixedly connected to the outside of the control panel.

[0013] Preferably, the outer bottom end of the pressing plate is in contact with the inside of the positioning frame, and the outside of the positioning frame is in contact with the outside of the output tube.

[0014] Preferably, one end of the tension spring is fixedly connected to the outside of the mounting housing, and the other end of the tension spring is fixedly connected to the outside of the sealing plate.

[0015] Compared with related technologies, the screen dispensing assembly pressing fixture provided by this utility model has the following beneficial effects: This invention effectively solves the problem of poor adaptability of traditional fixtures through the synergistic structure of the adjusting rod, sliding latch, and mounting spring. Pulling the sliding latch causes the limiting plate to compress the mounting spring, releasing the fixing of the adjusting rod and flexibly adjusting its position within the mounting plate. This allows the pressing plate to adapt to different types and thicknesses of screens and various adhesive properties. The combination of the positioning frame and the mounting pad ensures stable screen placement. Combined with the adjustable pressing plate height, it allows for precise control of the pressing pressure, preventing excessive pressure from damaging the screen or causing adhesive overflow. Simultaneously, it prevents defects such as loose bonding, air bubbles, and delamination caused by insufficient pressure, significantly improving product yield.

[0016] This invention solves the pressure imbalance problem caused by spring elasticity decay through the design of a return spring and a tension spring. The return spring can push the adjusting rod to return to its original position after compression. When its elasticity decays, it can be compensated and adjusted through the adjusting rod structure to ensure stable pressure. When changing screen batches or adhesive types, there is no need to change the fixture; fine parameter adjustments can be made simply by the cooperation of the sliding latch and the adjusting rod, avoiding increased costs from frequent maintenance. The anti-backflow mechanism reduces adhesive waste, and the overall structural design reduces downtime, achieving cost reduction and efficiency improvement, and adapting to diverse production needs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a screen dispensing assembly pressing fixture provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the adjusting rod. Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 1 The diagram shows the structure of the press plate. Figure 5 for Figure 4 Enlarged view of point B in the image.

[0018] The following are the labeling elements in the diagram: 1. Control panel; 2. Mounting frame; 3. Cylinder; 4. Drive rod; 5. Mounting plate; 6. Adjusting rod; 7. Slot; 8. Return spring; 9. Sliding rod; 10. Limiting plate; 11. Mounting spring; 12. Pressing plate; 13. Mounting pad; 14. Positioning frame; 15. Glue storage tank; 16. Pump body; 17. Output pipe; 18. Cross placement plate; 19. Mounting housing; 20. Sliding rod; 21. Tension spring; 22. Sealing plate; 23. Sealing ring; 24. Control panel; 25. Button; 26. Fixed housing. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0020] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] Please see Figures 1 to 5 A screen dispensing assembly pressing fixture includes: an operating table 1, which provides a stable working platform. The cast iron material has high density and high rigidity, which can absorb the impact force generated during the pressing process and avoid the table vibration from affecting the pressing accuracy. The top of the operating table 1 is fixedly connected to a mounting frame 2, which can withstand the axial pressure generated when the cylinder 3 is working and avoid the frame deformation. The top of the mounting frame 2 is fixedly connected to an adjustment mechanism, and the rear of the operating table 1 is fixedly connected to an anti-backflow mechanism. The adjustment mechanism includes a cylinder 3, which drives a drive rod 4 to perform linear reciprocating motion via compressed air. A magnetic switch can precisely control the cylinder stroke to ensure consistent pressing depth of the pressing plate 12. The drive rod 4 is fixedly connected to the drive end of the cylinder 3. The drive rod 4 serves as the mounting carrier for components such as the adjusting rod 6 and the sliding clamp 9, transmitting the power of the cylinder to the pressing plate 12. The steel plate material ensures no deformation during power transmission, guaranteeing the synchronous movement accuracy of the four corner adjusting rods. A drive assembly is fixedly connected to the outer bottom end of the drive rod 4. The drive assembly includes the drive rod 4, which is externally fixedly connected to the drive end of the cylinder 3. A mounting plate 5 is fixedly connected to the outer side of the drive rod 4. The adjusting rod 6 is externally slidably connected to the inside of the mounting plate 5. The sliding clamp 9 is externally slidably connected to the left and right sides of the mounting plate 5. The limiting plate 10 is externally slidably connected to the inside of the mounting plate 5. The pressing plate 12 is fixedly connected to the outer bottom end of the adjusting rod 6. The plate 12 directly presses the screen: the aluminum alloy material is lightweight and rigid enough to avoid deformation during pressing; the silicone pad is soft and can conform to the slight curvature of the screen surface to ensure even distribution of pressing force; the four corners of the drive component are slidably connected to the adjusting rod 6, and the adjusting rod 6 has a slot 7 on its outside; the left and right sides of the drive component are slidably connected to the sliding rod 9; the drive component is slidably connected to the limiting plate 10; the sliding rod 9 is fitted with a mounting spring 11; the slot 7 is fitted with a return spring 8. The return spring 8 is adapted to screens of different sizes: by sliding the adjusting rod 6 up and down, the initial position of the pressing plate 12 can be adjusted according to the height of the screen and the pressing requirements; the scale lines facilitate precise positioning by the operator; the return spring 8 ensures that the adjusting rod 6 remains stable when there is no external force, preventing position deviation before pressing; the cooperation between the slot 7 and the sliding rod 9 locks the position after adjustment, ensuring that the adjusting rod does not move during pressing.

[0022] The anti-backflow mechanism includes a glue storage tank 15, a pump body 16 fixedly connected to the top of the glue storage tank 15, and an output pipe 17 fixedly connected to the output end of the pump body 16. The glue storage tank 15 stores glue for dispensing, and a level window facilitates real-time observation of the remaining amount. The pump body 16 provides stable glue delivery power, and the flow rate is adjustable to adapt to different dispensing needs. The output pipe 17 delivers the glue to the dispensing position, and its contact with the positioning frame 14 guides the overflow of glue backflow. A fixed housing 26 is fixedly connected to the outside of the output pipe 17. A cross-shaped placement plate 18 is fixedly connected to the inside of the fixed housing 26. A mounting housing 19 is fixedly connected to the outside of the cross-shaped placement plate 18. A sliding rod 20 is slidably connected to the outside of the mounting housing 19, and a tension spring 21 is sleeved on the outside of the sliding rod 20. The fixed housing 26 provides installation and protection space for the internal components; the cross-shaped placement plate 18 is fixed to the mounting housing. 19. At the same time, it does not hinder the flow of glue; the sliding rod 20 provides guidance for the sealing assembly, ensuring the smooth movement of the sealing plate 22; the tension spring 21 provides continuous contact pressure for the sealing plate 22, achieving normal sealing and preventing backflow. The sealing assembly, including the sealing plate 22, is fixedly connected to the outside of the sliding rod 20. The sealing ring 23 is fixedly connected to the inside of the fixed housing 26. The tension spring 21 pulls the sealing plate 22 and the sealing ring 23 to fit tightly together, achieving sealing and preventing backflow. When the pump body 16 starts to deliver glue, the glue pressure overcomes the spring tension and pushes the sealing plate 22 and the sliding rod 20 to move, the sealing surface separates, and the glue passes smoothly. After the pump body 16 stops, the spring pulls the sealing plate 22 to reset and reseal, effectively preventing glue backflow from contaminating the pump body 16 or blocking the pipeline.

[0023] A mounting pad 13 is fixedly connected to the top of the operating table 1. The elasticity of the mounting pad 13 can buffer the impact force during pressing, avoiding damage to the screen or operating table caused by rigid contact, and at the same time assisting in leveling the mounting frame 2. The positioning frame 14 achieves precise positioning of the screen through the inner ring silicone strip, limiting the displacement of the screen during pressing. The positioning frame 14 is fixedly connected to the top of the mounting pad 13. The outer bottom end of the mounting frame 2 is fixedly connected to the outside of the mounting pad 13. The control panel 24 is fixedly connected to the outer front left end of the operating table 1. Multiple buttons 25 are fixedly connected to the outside of the operating table 1. The outer bottom end of the pressing plate 12 is in contact with the inside of the positioning frame 14. The outside of the positioning frame 14 is in contact with the outside of the output tube 17. One end of the tension spring 21 is fixedly connected to the outside of the mounting housing 19, and the other end of the tension spring 21 is fixedly connected to the outside of the sealing plate 22.

[0024] The working principle of the screen dispensing assembly pressing fixture provided by this utility model is as follows: When using this screen dispensing assembly pressing fixture, first place the screen component to be processed in the positioning frame 14 on top of the operating table 1. The mounting pad 13 supports the positioning frame 14, ensuring the stability of the screen component during subsequent operations. After dispensing is completed, the adjustment mechanism starts operating. The cylinder 3 starts and drives the drive rod 4 to move downward. The drive rod 4 drives the mounting plate 5 to move downward synchronously. During the movement of the mounting plate 5, the adjusting rods 6 at its four outer corners move downward accordingly. The return springs 8 outside the adjusting rods 6 are compressed. If it is necessary to adjust the position of the pressing plate 12 according to the thickness of the screen component, the sliding latch 9 is pulled to make the sliding plate 12 move downward. The locking lever 9 drives the limiting plate 10 to press the mounting spring 11, releasing the fixing of the adjusting rod 6. Then, the position of the adjusting rod 6 inside the mounting plate 5 is adjusted so that the pressing plate 12 reaches the appropriate height. After the adjustment is completed, the sliding locking lever 9 is released, causing the mounting spring 11 to rebound, which allows the sliding locking lever 9 to lock with the external locking groove 7 of the adjusting rod 6, thus fixing the adjusting rod 6 again. After the adjustment is completed, the mounting plate 5 continues to move downward, causing the pressing plate 12 at the bottom of the adjusting rod 6 to gradually approach the screen component inside the positioning frame 14. Finally, the outer bottom end of the pressing plate 12 contacts the screen component and applies pressure to realize the pressing operation of the screen component. When the anti-backflow mechanism starts working, the glue in the glue tank 15 is delivered to the inside of the fixed housing 26 through the output pipe 17 under the action of the pump body 16. At this time, the glue will exert pressure on the sealing plate 22, pushing the sealing plate 22 to move away from the sealing ring 23. When the sealing plate 22 moves, it drives the sliding rod 20 to slide outside the mounting housing 19. The tension spring 21 sleeved outside the sliding rod 20 is stretched. As the sealing plate 22 separates from the sealing ring 23, the glue can flow out through the channel inside the fixed housing 26 and enter the screen component in the positioning frame 14 to complete the dispensing operation. During the pressing process, if the glue delivery is interrupted, the pump body 16 stops working, and the tension spring 21 pulls the sliding rod 20 to reset under its own elastic force. The sliding rod 20 drives the sealing plate 22 to move towards the sealing ring 23 until the sealing plate 22 and the sealing ring 23 are in close contact, preventing the glue in the output pipe 17 from flowing back. After the pressing operation is completed, the cylinder 3 drives the drive rod 4 to move upward, and the mounting plate 5 and the adjusting rod 6 are reset upward. The reset spring 8 pushes the adjusting rod 6 back to the initial position, and the pressing plate 12 separates from the screen component. At this time, the pressed screen component can be taken out from the positioning frame 14, completing the entire screen dispensing assembly pressing process.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A screen dispensing assembly pressing fixture, characterized in that, include: The operating table (1) has a mounting frame (2) fixedly connected to its top, an adjustment mechanism fixedly connected to the top of the mounting frame (2), and an anti-backflow mechanism fixedly connected to the rear of the operating table (1). The adjustment mechanism includes a cylinder (3), a drive rod (4) is fixedly connected to the drive end of the cylinder (3), a drive assembly is fixedly connected to the bottom of the drive rod (4), an adjustment rod (6) is slidably connected to the four corners of the drive assembly, a slot (7) is provided on the outside of the adjustment rod (6), a sliding rod (9) is slidably connected to the left and right sides of the drive assembly, a limit plate (10) is slidably connected to the outside of the drive assembly, an installation spring (11) is sleeved on the outside of the sliding rod (9), and a reset spring (8) is sleeved on the outside of the slot (7).

2. The screen dispensing assembly pressing fixture according to claim 1, characterized in that, The drive assembly includes a drive rod (4), which is externally fixedly connected to the drive end of the cylinder (3). A mounting plate (5) is externally fixedly connected to the drive rod (4). The externally sliding rod (6) is externally slidably connected to the inside of the mounting plate (5). The externally sliding latch (9) is externally slidably connected to the left and right sides of the mounting plate (5). The externally sliding plate (10) is externally slidably connected to the inside of the mounting plate (5). A pressing plate (12) is fixedly connected to the bottom of the externally adjustable rod (6).

3. The screen dispensing assembly pressing fixture according to claim 2, characterized in that, The anti-backflow mechanism includes a glue storage tank (15), a pump body (16) is fixedly connected to the top of the glue storage tank (15), an output pipe (17) is fixedly connected to the output end of the pump body (16), a fixed housing (26) is fixedly connected to the outside of the output pipe (17), a cross placement plate (18) is fixedly connected inside the fixed housing (26), an installation housing (19) is fixedly connected to the outside of the cross placement plate (18), a sliding rod (20) is slidably connected to the outside of the installation housing (19), a tension spring (21) is sleeved on the outside of the sliding rod (20), and a sealing component is fixedly connected to the outside of the sliding rod (20).

4. The screen dispensing assembly pressing fixture according to claim 3, characterized in that, The sealing assembly includes a sealing plate (22), which is fixedly connected to the outside of the sliding rod (20). The sealing plate (22) is fixedly connected to the outside of the sliding rod (20), and a sealing ring (23) is fixedly connected to the inside of the fixed housing (26).

5. A screen dispensing assembly pressing fixture according to claim 4, characterized in that, The top of the operating table (1) is fixedly connected to a mounting pad (13), the top of the mounting pad (13) is fixedly connected to a positioning frame (14), and the bottom of the mounting frame (2) is fixedly connected to the outside of the mounting pad (13).

6. The screen dispensing assembly pressing fixture according to claim 1, characterized in that, A control panel (24) is fixedly connected to the left side of the front of the control panel (1), and multiple buttons (25) are fixedly connected to the outside of the control panel (1).

7. A screen dispensing assembly pressing fixture according to claim 5, characterized in that, The outer bottom end of the pressing plate (12) is in contact with the inside of the positioning frame (14), and the outside of the positioning frame (14) is in contact with the outside of the output tube (17).

8. A screen dispensing assembly pressing fixture according to claim 4, characterized in that, One end of the tension spring (21) is fixedly connected to the outside of the mounting housing (19), and the other end of the tension spring (21) is fixedly connected to the outside of the sealing plate (22).

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