A pneumatic pressing platform for touch screen detection

Abstract

The utility model provides a kind of pneumatic press platform for touch screen detection belongs to pneumatic press platform technical field, including substrate, the sidewall fixed mounting of substrate has support frame, the inner wall of support frame is inserted with pullout board, the inner wall of pullout board is inserted with bearing plate, the upper side of bearing plate is also equipped with support plate and air pressure device, the inside of support frame is equipped with cleaning component, the cleaning component includes support, the sidewall fixed connection of support and substrate, further include: pressing assembly, the pressing assembly is located the upper side of bearing plate;The utility model has beneficial effect: by setting above-mentioned component, to facilitate when detecting screen, by twice buffering, avoid because direct contact and the resulting screen stress is larger and then appears damage, can also buffer to carry out press detection process, to increase the reliability of detection, can also blow dust on screen surface, reduce the adverse effect caused by dust.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic pressing platforms, and more specifically, to a pneumatic pressing platform for touch screen testing. Background Technology

[0002] In the field of touch screen testing, pneumatic pressing platforms have become the core equipment for achieving tight bonding between touch screens and testing fixtures (such as continuity probes and optical stages) due to their simple structure, low cost, and rapid response. They are widely used in continuity testing, display defect detection, and mechanical performance verification of products such as mobile phone screens, vehicle central control screens, and flexible foldable screens.

[0003] Currently, pneumatic pressing platforms for touchscreen testing on the market use pneumatic devices to control pressure plates to press the device together. However, during use, the rigid pressure from the pressure plates can easily cause screen edge cracking, surface coating scratches, or pixel damage to flexible screens. Furthermore, if dust is present on the screen surface, it can easily accumulate between the secondary piston rod and the screen during the pressing process, causing damage to the screen itself. How to invent a pneumatic pressing platform for touchscreen testing to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a pneumatic pressing platform for touch screen testing, which aims to improve the problems of screen damage caused by rigid pressure from the pressure plate and screen damage caused by dust accumulation during pressing.

[0005] This utility model is implemented as follows: This utility model provides a pneumatic pressing platform for touch screen testing, including a substrate. A support frame is fixedly installed on the side wall of the substrate. A pull plate is inserted into the inner wall of the support frame. A load-bearing plate is inserted into the inner wall of the pull plate. A support plate and a pneumatic device are also provided above the load-bearing plate. A cleaning assembly is provided inside the support frame. The cleaning assembly includes a bracket, which is fixedly connected to the side wall of the substrate. The platform also includes: The pressing component is located above the load-bearing plate.

[0006] Preferably, an airbag is slidably installed on the inner wall of the bracket, one end of the airbag is fixedly connected to the side wall of the base plate, and an air hole is opened on the inner wall of the airbag, the air hole being located on one side of the load-bearing plate.

[0007] Preferably, the support frame is fixedly connected to the side wall of the support plate, the support plate is fixedly connected to one end of the pneumatic device, an air guide pipe is fixedly installed on the side wall of the pneumatic device, the end of the air guide pipe away from the pneumatic device passes through the inner wall of the support frame, a controller is fixedly installed on the air guide pipe, and the controller is fixedly connected to the side wall of the base plate.

[0008] Preferably, the pressing assembly includes a main piston cylinder, one end of the pneumatic device passes through the side wall of the support plate and is fixedly connected to the main piston cylinder, a pressure plate is fixedly installed on the side wall of the main piston cylinder, the pressure plate is located above the airbag, and an insertion hole is opened on the side wall of the pressure plate.

[0009] Preferably, a spring is fixedly installed on the inner wall of the main piston cylinder, a main piston rod is fixedly installed on one end of the spring, the main piston rod is slidably connected to the inner wall of the main piston cylinder, and a connecting plate is fixedly installed on the end of the main piston rod away from the main piston cylinder.

[0010] Preferably, a limiting post is fixedly installed at one end of the composite plate, and the limiting post is slidably connected to the insertion hole. A secondary piston cylinder is fixedly installed at the other end of the composite plate, and a secondary piston rod is slidably installed on the inner wall of the secondary piston cylinder. The secondary piston rod is located above the load-bearing plate.

[0011] The beneficial effects of this utility model are: The pressure plate begins to compress the airbag. As the internal space of the airbag shrinks, the gas inside is blown through the vents onto the screen, which is mounted in a groove inside the load-bearing plate. This removes dust from the screen, reducing the risk of dust accumulation between the secondary piston rod and the screen during subsequent pressing, which could damage the screen and affect the test results. The piston rod continues to move towards the screen until it makes contact. As the secondary piston rod continues to move, it begins to slide along the inner wall of the secondary piston cylinder. The low stiffness of the primary buffer component quickly absorbs the high-frequency, low-energy impact of the "point contact," preventing screen edge cracking, surface coating scratches, or pixel damage to the flexible screen. As the main piston cylinder continues to move downwards, the main piston rod overcomes the elasticity of the spring and continues to move along the inner wall of the main piston cylinder. The elastic deformation of the spring balances the pressure across the entire pressing surface, mitigating damage to the screen caused by the rigid pressure of full pressing and ensuring the reliability of the test results. Attached Figure Description To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a side view structural diagram of a pneumatic pressing platform for touch screen testing provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the main view structure of a pneumatic pressing platform for touch screen testing provided by an embodiment of this utility model; Figure 3 This is a side-view structural cross-sectional diagram of a pneumatic pressing platform for touch screen testing provided by an embodiment of this utility model; Figure 4 This is a schematic diagram of the pressing component structure of a pneumatic pressing platform for touch screen testing provided by an embodiment of this utility model; Figure 5 This is a cross-sectional schematic diagram of the pressing component structure of a pneumatic pressing platform for touch screen testing provided by an embodiment of this utility model.

[0013] In the diagram: 1. Base plate; 2. Support frame; 3. Drawer plate; 4. Load-bearing plate; 5. Cleaning assembly; 501. Bracket; 502. Airbag; 503. Air hole; 6. Pressing assembly; 601. Main piston cylinder; 602. Spring; 603. Pressure plate; 604. Main piston rod; 605. Insertion hole; 606. Limiting post; 607. Assembly plate; 608. Secondary piston cylinder; 609. Secondary piston rod; 7. Support plate; 8. Pneumatic device; 9. Air guide pipe; 10. Controller. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Example, refer to Figures 1-5 A pneumatic pressing platform for touchscreen testing includes a substrate 1, a support frame 2 fixedly mounted on the side wall of the substrate 1, a pull plate 3 inserted into the inner wall of the support frame 2, a load-bearing plate 4 inserted into the inner wall of the pull plate 3, a support plate 7 and a pneumatic device 8 above the load-bearing plate 4, a cleaning assembly 5 inside the support frame 2, the cleaning assembly 5 including a bracket 501 fixedly connected to the side wall of the substrate 1, and further comprising: Press component 6 is located above the load-bearing plate 4.

[0016] Furthermore, an airbag 502 is slidably installed on the inner wall of the support 501. One end of the airbag 502 is fixedly connected to the side wall of the base plate 1. An air hole 503 is opened on the inner wall of the airbag 502. The air hole 503 is located on one side of the load-bearing plate 4. The support frame 2 is fixedly connected to the side wall of the support plate 7. The support plate 7 is fixedly connected to one end of the air pressure device 8. An air guide pipe 9 is fixedly installed on the side wall of the air pressure device 8. The end of the air guide pipe 9 away from the air pressure device 8 passes through the inner wall of the support frame 2. A controller 10 is fixedly installed on the air guide pipe 9. The controller 10 is fixedly connected to the side wall of the base plate 1.

[0017] It should be noted that a pull plate 3 is inserted into the inner wall of the support frame 2, and a load-bearing plate 4 is inserted into the inner wall of the pull plate 3. This allows for the replacement of different load-bearing plates 4 according to different screen sizes, reducing the need to change different devices when dealing with different screen sizes and improving the efficiency of the device. When the test begins, the screen is placed in the groove in the middle of the load-bearing plate 4, and the groove limits the screen to prevent damage during the subsequent pressing process due to screen movement. At this time, the controller 10 is activated, and the air pressure device 8 is inflated through the air pipe 9, thereby controlling the pressing component 6 to start the pressing operation.

[0018] Reference Figures 3-5 Furthermore, the pressing assembly 6 includes a main piston cylinder 601. One end of the pneumatic device 8 passes through the side wall of the support plate 7 and is fixedly connected to the main piston cylinder 601. A pressure plate 603 is fixedly installed on the side wall of the main piston cylinder 601. The pressure plate 603 is located above the airbag 502. An insertion hole 605 is opened on the side wall of the pressure plate 603. A spring 602 is fixedly installed on the inner wall of the main piston cylinder 601. A main piston rod 604 is fixedly installed on one end of the spring 602. The main piston rod 604 is slidably connected to the inner wall of the main piston cylinder 601. A composite plate 607 is fixedly installed on the end of the main piston rod 604 away from the main piston cylinder 601. A limit post 606 is fixedly installed on one end of the composite plate 607. The limit post 606 is slidably connected to the insertion hole 605. A secondary piston cylinder 608 is fixedly installed on the other end of the composite plate 607. A secondary piston rod 609 is slidably installed on the inner wall of the secondary piston cylinder 608. The secondary piston rod 609 is located above the load-bearing plate 4.

[0019] It should be noted that: since the main piston cylinder 601 is fixedly connected to the pneumatic device 8, the pneumatic device 8 drives the entire pressing assembly 6 to move downward. At this time, the pressure plate 603 first comes into contact with the airbag 502. As the pressure plate 603 continues to move towards the screen, it begins to compress the airbag 502. As the internal space of the airbag 502 shrinks, the gas inside the airbag 502 is blown through the air hole 503 onto the screen installed in the groove inside the load-bearing plate 4, thereby blowing away the dust on the screen. This reduces the accumulation of dust between the auxiliary piston rod 609 and the screen during subsequent pressing, which could damage the screen and affect the test results. Since the position of the air hole 503 changes when the airbag 502 is compressed, multiple sets of air holes 503 on the inner wall of the airbag 502 can blow the internal gas onto the screen surface according to the different positions of the air holes 503, thereby improving the utilization rate of the airbag 502.

[0020] At this point, the secondary piston rod 609 continues to move towards the screen until it begins to contact the screen. As the secondary piston rod 609 continues to move, it begins to slide along the inner wall of the secondary piston cylinder 608. Gas inside the secondary piston cylinder 608 leaks out along the gap between the secondary piston cylinder 608 and the secondary piston rod 609. Since the most vulnerable moment for a touchscreen is the "initial contact moment," even a slight positional deviation between the secondary piston rod 609 and the screen, or fluctuations in the descent speed of the secondary piston rod 609, can easily cause localized point impacts. During this stage, the gas passing through the secondary piston rod 609... Independent ascent, utilizing the low stiffness characteristics of the primary buffer component, quickly absorbs the high-frequency, low-energy impact generated by "point contact," preventing screen edge cracking, surface coating scratches, or pixel damage to the flexible screen. This stage has a very short travel distance, the purpose of which is to complete the attitude fine-tuning before the secondary piston rod 609 is fully attached to the screen. The secondary piston rod 609, guided by the secondary piston cylinder 608, can forcibly correct the slight deviation of the secondary piston rod 609 through the elastic deformation of the primary buffer, allowing the secondary piston rod 609 to adapt to the slight unevenness of the screen surface, ensuring the uniformity of force during subsequent contact, and avoiding local damage caused by pressure overshoot during initial contact.

[0021] At this time, under the force of the screen and the air pressure device 8, the auxiliary piston rod 609 and the auxiliary piston cylinder 608 begin to press against the mating plate 607, thereby causing the limiting post 606 to slide along the insertion hole 605. This is to prevent shaking and thus affect the subsequent test results through the limiting action of the limiting post 606. At the same time, as the main piston cylinder 601 continues to move downward, the main piston rod 604 overcomes the elasticity of the spring 602 and continues to move along the inner wall of the main piston cylinder 601 until the limiting post 606 slides along the insertion hole 605 to the bottom of the insertion hole 605. At this time, the pressing process begins, and then the test is performed. When the auxiliary piston rod 609 contacts the auxiliary piston cylinder 608, the pressing... The combined force is no longer limited to "point contact" but is transmitted to the entire composite plate 607 through the auxiliary piston cylinder 608 (at this time, the screen and the auxiliary piston rod 609 have basically achieved surface contact). At this stage, it is necessary to overcome the supporting force between the screen and the stage and the rigid reaction force of the screen itself (such as the deformation resistance of the glass). Therefore, the screen surface bears greater pressure. At this time, under the action of the composite plate 607, the main piston cylinder 601, the main piston rod 604 and the spring 602, the overall impact after surface contact is absorbed. Then, the elastic deformation of the spring 602 is used to balance the pressure of the entire pressing surface, thereby alleviating the damage to the screen caused by the rigid pressure of full pressing, and thus ensuring the authenticity and reliability of the detection effect.

[0022] In the first stage, the auxiliary piston rod 609 rises independently along the auxiliary piston cylinder 608, thus using "soft buffer + short stroke" to solve the "fragility of initial contact" and ensure that the screen is not damaged by instantaneous impact. In the second stage, the spring 602 inside the main piston cylinder 601 is squeezed by linkage, thus using "hard buffer + long stroke" to solve the "stability of overall pressing" and ensure uniform pressure.

[0023] It should be noted that the specific model and specifications need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pneumatic pressing platform for touch screen testing, comprising a substrate (1), a support frame (2) fixedly mounted on the side wall of the substrate (1), a pull plate (3) inserted into the inner wall of the support frame (2), a load-bearing plate (4) inserted into the inner wall of the pull plate (3), a support plate (7) and a pneumatic device (8) further provided above the load-bearing plate (4), characterized in that, The support frame (2) is equipped with a cleaning assembly (5) inside. The cleaning assembly (5) includes a bracket (501), which is fixedly connected to the side wall of the substrate (1). It also includes: Pressing component (6) is located above the load-bearing plate (4).

2. The pneumatic pressing platform for touchscreen testing according to claim 1, characterized in that, An airbag (502) is slidably installed on the inner wall of the bracket (501). One end of the airbag (502) is fixedly connected to the side wall of the base plate (1). An air hole (503) is opened on the inner wall of the airbag (502). The air hole (503) is located on one side of the load-bearing plate (4).

3. The pneumatic pressing platform for touchscreen testing according to claim 1, characterized in that, The support frame (2) is fixedly connected to the side wall of the support plate (7), the support plate (7) is fixedly connected to one end of the air pressure device (8), the side wall of the air pressure device (8) is fixedly installed with an air guide pipe (9), the end of the air guide pipe (9) away from the air pressure device (8) passes through the inner wall of the support frame (2), the air guide pipe (9) is fixedly installed with a controller (10), and the controller (10) is fixedly connected to the side wall of the base plate (1).

4. The pneumatic pressing platform for touchscreen testing according to claim 1, characterized in that, The pressing assembly (6) includes a main piston cylinder (601). One end of the pneumatic device (8) passes through the side wall of the support plate (7) and is fixedly connected to the main piston cylinder (601). A pressure plate (603) is fixedly installed on the side wall of the main piston cylinder (601). The pressure plate (603) is located above the airbag (502). An insertion hole (605) is opened on the side wall of the pressure plate (603).

5. A pneumatic pressing platform for touchscreen testing according to claim 4, characterized in that, A spring (602) is fixedly installed on the inner wall of the main piston cylinder (601). A main piston rod (604) is fixedly installed on one end of the spring (602). The main piston rod (604) is slidably connected to the inner wall of the main piston cylinder (601). A composite plate (607) is fixedly installed on the end of the main piston rod (604) away from the main piston cylinder (601).

6. The pneumatic pressing platform for touchscreen testing according to claim 5, characterized in that, One end of the composite plate (607) is fixedly installed with a limiting post (606), which is slidably connected to the insertion hole (605). The other end of the composite plate (607) is fixedly installed with a secondary piston cylinder (608), and a secondary piston rod (609) is slidably installed on the inner wall of the secondary piston cylinder (608). The secondary piston rod (609) is located above the load-bearing plate (4).

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