Display screen point screen double-side compression device

Abstract

The application relates to a display screen point-screen double-side pressure connecting device, which comprises a pressure connecting platform, a fixed pressure connecting mechanism arranged at one side edge of the pressure connecting platform, and a floating pressure connecting mechanism arranged at the other side edge of the pressure connecting platform. The floating pressure connecting mechanism comprises a second support frame, a second pressure head, a support frame fixable part and a free sliding guide device. The second pressure head is connected to the second support frame through a spring. The two ends of the second support frame are respectively provided with a support frame fixable part. The inner sides of the two support frame fixable parts are respectively provided with a free sliding guide device connected to the second support frame. Compared with the prior art, the floating pressure connecting mechanism is added to the original fixed pressure connecting mechanism to form double-side pressure connection. The floating pressure connecting mechanism can move to ensure that the two sides of the display screen of different sizes are simultaneously point-screened, the picture brightness gap is reduced, the floating pressure connecting mechanism is fixed or unfixed through the support frame fixable part according to different needs, and the product detection stability and yield are improved.

Description

Technical Field

[0001] This invention relates to the field of display screen testing technology, and in particular to a double-sided pressing device for display screen testing. Background Technology

[0002] Current displays typically use single-sided pressing during the screen-on process. With single-sided pressing, power is applied from the pressing side to illuminate the screen, resulting in a difference in brightness between the two ends. This difference becomes more pronounced with larger screen sizes. Due to product design requirements, double-sided pressing is necessary. However, double-sided pressing requires two pressing devices on the pressing platform: one fixed and the other movable, to ensure simultaneous illumination of both sides of displays of different sizes. Currently, the domestic market lacks such technology or the technology is not yet mature. A key challenge is precisely controlling the movable pressing device throughout the entire workflow. Furthermore, the pressing platform needs to be moved and transported during operation; it has no fixed location. Ensuring that the positions of all components within the pressing platform remain unchanged during transport is crucial for achieving good testing results. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a double-sided pressing device for display screen dots.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: A double-sided pressing device for a display screen, comprising a pressing platform, a fixed pressing mechanism provided at one edge of the pressing platform, and a floating pressing mechanism provided at the other edge of the pressing platform. The floating pressing mechanism includes a second support frame, a second pressing head, a support frame fixing component, and a free sliding guide device. The second pressing head is connected to the second support frame by a spring. A support frame fixing component is provided at each end of the second support frame, and a free sliding guide device connected to the second support frame is provided on the inner side of each of the two support frame fixing components.

[0005] When the crimping platform is being transported, the support frame can fix the floating crimping mechanism, ensuring that the positions of all components in the crimping platform remain unchanged. When the crimping platform is moved to the designated location, the support frame can fix the floating crimping mechanism, and the free-sliding guide device can drive the second support frame to slide freely to the required position, and then perform alignment crimping and lighting.

[0006] Further specifying, the support frame can be fixed as an electromagnet, and the two ends of the second support frame are provided with cavities to accommodate the electromagnet. The electromagnet is electrically connected to the control mechanism. When the electromagnet is powered by the control mechanism, it has no magnetism. When the control mechanism does not power the electromagnet, that is, when the electromagnet is de-energized, it has magnetism.

[0007] The support frame can be fixed with an electromagnet, which is simple in structure and easy to control.

[0008] Furthermore, the pressing platform is provided with a groove for the free sliding guide device to slide freely, and a bearing plate is provided on the groove.

[0009] Furthermore, the free-sliding guide device includes a rotating assembly, an X-axis sliding assembly, and a Y-axis sliding assembly. The rotating assembly includes a Z-shaped block, an L-shaped block, and a rotating shaft between them. The lower part of the Z-shaped block is fixed to a support plate. The rotating shaft is provided with two connecting plates, which connect the Z-shaped block and the L-shaped block respectively. The X-axis sliding assembly includes an X-axis slide rail fixed to the L-shaped block and an X-axis slider that slides along the X-axis slide rail. The Y-axis sliding assembly includes a Y-axis slide rail fixed to the X-axis slider and a Y-axis slider that slides along the Y-axis slide rail. The Y-axis slider is provided with a transition block that connects to the second support frame.

[0010] The rotating component, the X-axis sliding component, and the Y-axis sliding component constitute a set of planar free sliding guide devices. A free sliding guide device is set on each side of the second support frame to ensure the stability of the entire device during sliding.

[0011] Furthermore, the second support frame has a cavity in the middle section, and a pressure rod that partially extends out of the cavity is provided in the cavity. The pressure rod is connected to the second support frame through a connecting rod on its upper surface. A support seat is provided below the pressure rod, and a spring is provided on the front side of the support seat. One end of the spring is connected to the bottom wall of the cavity, and the other end is connected to the pressure rod.

[0012] When the pressure rod is not subjected to downward pressure, it is supported by the support base and the spring. When the pressure rod is subjected to downward pressure, the part extending out of the cavity moves downward. After the downward pressure disappears, it returns to its original state by the spring.

[0013] Furthermore, a PCB turntable is provided between the two free-sliding guide devices on the carrier plate, and the PCB turntable is provided with conductive contact pieces that can be powered on and lit by pressing down the pressure rod.

[0014] Alignment and lighting with the display screen are achieved through conductive contacts, which is simple, fast, and more effective.

[0015] Further specifying, the fixed pressing mechanism includes a first support frame and a first pressing head. The first pressing head is connected to the first support frame by a spring. The cross-section of the first support frame is shaped like a figure 7, which includes a horizontal section and a vertical section. The first pressing head includes a horizontal pressing rod and a T-shaped block disposed on the horizontal pressing rod. The T-shaped block is slidably disposed on the end face of the horizontal section. The horizontal pressing rod is at a certain distance from the lower end face of the horizontal section. A spring connected to the horizontal section is provided on the upper end face of the horizontal pressing rod. The structure of the second pressing head is the same as that of the first pressing head.

[0016] When the T-block is subjected to downward pressure, it slides downward along the end face of the first support frame, causing the horizontal pressure bar to move downward until the bottom of the horizontal pressure bar contacts the display screen. After the downward pressure is removed, it returns to its original state by the spring.

[0017] Furthermore, the upper part of the first support frame and the second support frame is provided with a pressing mechanism.

[0018] Furthermore, both ends of the first and second support frames on the pressing platform are equipped with handrails. The handrails facilitate handling.

[0019] The beneficial effects of this invention are as follows: Compared with the prior art, this invention adds a floating pressing mechanism, which, together with the original fixed pressing mechanism, forms a double-sided pressing mechanism. The floating pressing mechanism can move, ensuring that both sides of the display screen of different sizes can be turned on simultaneously, reducing the difference in screen brightness. The floating pressing mechanism is fixed by the support frame fixing component during transportation, ensuring that the positions of all components in the pressing platform do not change. When transferred to the designated position, the support frame fixing component does not fix the floating pressing mechanism, and the free sliding guide device can drive the second support frame to slide freely to the required position for alignment pressing and lighting, improving the product testing stability and yield. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is an assembly diagram of the present invention.

[0023] In the diagram: 1. Crimping platform, 2. Fixed crimping mechanism, 3. Floating crimping mechanism, 4. Support platform, 11. Groove, 12. PCB turntable, 13. Handrail, 21. First support frame, 22. First pressure head, 31. Second support frame, 32. Second pressure head, 33. Support frame fixing component, 34. Free sliding guide device, 35. Pressure rod, 36. Connecting rod, 37. Support base, 121. Conductive contact piece, 211. Horizontal section, 212. Vertical section, 221. Horizontal pressure rod, 222. T-block, 311. Cavity, 312. Hollow cavity, 341. Rotating assembly, 342. X-axis sliding assembly, 343. Y-axis sliding assembly, 344. Transition block, 3411. Z-block, 3412. L-block, 3421. X-axis slider, 3431. Y-axis slider. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0025] like Figure 1 and Figure 2 As shown, a double-sided pressing device for a display screen includes a pressing platform 1. A fixed pressing mechanism 2 is provided at one edge of the pressing platform 1, and a floating pressing mechanism 3 is provided at the other edge of the pressing platform 1. The fixed pressing mechanism 2 includes a first support frame 21 and a first pressing head 22. The first pressing head 22 is connected to the first support frame 21 by a spring. The floating pressing mechanism 3 includes a second support frame 31, a second pressing head 32, a support frame fixing member 33, and a free sliding guide device 34. The second pressing head 32 is connected to the second support frame 31 by a spring. A support frame fixing member 33 is provided at each end of the second support frame 31. A free sliding guide device 34 connected to the second support frame 31 is provided on the inner side of each of the two support frame fixing members 33.

[0026] In this embodiment, a groove 11 is provided on the pressing platform 1 for the free sliding guide device 34 to slide freely, and a bearing plate 4 is provided on the groove 11. The cross-section of the first support frame 21 is shaped like a figure 7, which includes a horizontal section 211 and a vertical section 212. The first pressing head 22 includes a horizontal pressing rod 221 and a T-shaped block 222 provided on the horizontal pressing rod 221. The T-shaped block 222 is slidably provided on the end face of the horizontal section 211. The horizontal pressing rod 221 is a certain distance away from the lower end face of the horizontal section 211. A spring connected to the horizontal section 211 is provided on the upper end face of the horizontal pressing rod 221. The structure of the second pressing head 32 is the same as that of the first pressing head 22. A pressing mechanism (not shown in the figure) is provided on the upper part of the first support frame 21 and the second support frame 31.

[0027] A cavity 312 is formed in the middle section of the second support frame 31. A pressure rod 35, partially extending out of the cavity 312, is provided inside the cavity 312. The pressure rod 35 is connected to the second support frame 31 via a connecting rod 36 on its upper surface. A support seat 37 is provided below the pressure rod 35. A spring is provided on the front side of the support seat 37. One end of the spring is connected to the bottom wall of the cavity 312, and the other end is connected to the pressure rod 35. A PCB turntable 12 is provided between the two free sliding guide devices 34 on the bearing plate 4. The PCB turntable 12 is provided with a conductive contact 121 that is lit by being pressed down by the pressure rod 35.

[0028] In this embodiment, the support frame fixing member 33 is an electromagnet, and the two ends of the second support frame 31 are provided with cavities 311 for accommodating the electromagnet. The electromagnet is electrically connected to a control mechanism (not shown in the figure, which is an external connection). When the electromagnet is powered by the control mechanism, it is non-magnetic, and when the electromagnet is de-energized, it is magnetic. The free-sliding guide device 34 includes a rotating assembly 341, an X-axis sliding assembly 342, and a Y-axis sliding assembly 343. The rotating assembly 341 includes a Z-shaped block 3411, an L-shaped block 3412, and a rotating shaft between them (within the rotating assembly 341, not shown in the figure). The lower part of the Z-shaped block 3411 is fixed on the bearing plate 4. Two connecting plates are provided on the rotating shaft, and the two connecting plates connect the Z-shaped block 3411 and the L-shaped block 3412 respectively. The X-axis sliding assembly 342 includes an X-axis slide rail (not shown in the figure) fixed on the L-shaped block 3412 and an X-axis slider 3421 that slides along the X-axis slide rail. The Y-axis sliding assembly 343 includes a Y-axis slide rail (not shown in the figure) fixed on the X-axis slider and a Y-axis slider 3431 that slides along the Y-axis slide rail. The Y-axis slider 3431 is provided with a transition block 344 that is connected to the second support frame 31.

[0029] In addition, to facilitate the transfer of the pressing platform 1, handrails 13 are provided at both ends of the first support frame 21 and the second support frame 31 on the pressing platform 1.

[0030] Working principle: When the pressing platform 1 is moved to the designated position, the floating pressing mechanism 3 is kept stationary by an electromagnet. Then, the electromagnet is energized by an external control mechanism, and the floating pressing mechanism 3 can move freely under the control of the free sliding guide device 34 (the L-shaped block 3412 rotates around the Z-shaped block 3411, causing the horizontal plane to rotate; the X-axis sliding component 342 and the Y-axis sliding component 343 respectively drive the second support frame 31 to move along the X and Y directions, realizing the free movement of the second support frame 31). When it moves to the required position, the pressing mechanism pushes the first pressing head 22 and the second pressing head 32 downward. The two move downward to press the product. The pressing mechanism applies downward pressure to the pressing rod 35. The part of the pressing rod 35 that extends out of the cavity moves downward. The pressed product contacts the conductive contact piece on the PCB turntable 12 and is energized, thereby lighting up the product.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A double-sided pressing device for a display screen, characterized in that: The device includes a pressing platform. A fixed pressing mechanism is located at one edge of the pressing platform, and a floating pressing mechanism is located at the other edge. The floating pressing mechanism includes a second support frame, a second pressing head, a support frame fixing component, and a free-sliding guide device. The second pressing head is connected to the second support frame via a spring. A support frame fixing component is located at each end of the second support frame, and a free-sliding guide device is located on the inner side of each of the two fixing components and connected to the second support frame. The pressing platform has a groove for the free-sliding guide device to slide freely, and a bearing plate is provided on the groove. The free-sliding guide device includes a rotating assembly, an X-axis sliding assembly, and a Y-axis sliding assembly. The rotating assembly includes a Z-shaped block, an L-shaped block, and a rotating shaft between them. The lower part of the Z-shaped block is fixed to the bearing plate, and the rotating shaft has... Two connecting plates connect a Z-shaped block and an L-shaped block respectively. The X-axis sliding assembly includes an X-axis slide rail fixed on the L-shaped block and an X-axis slider that slides along the X-axis slide rail. The Y-axis sliding assembly includes a Y-axis slide rail fixed on the X-axis slider and a Y-axis slider that slides along the Y-axis slide rail. The Y-axis slider is provided with a transition block connected to a second support frame. A cavity is opened in the middle section of the second support frame. A pressure rod is provided in the cavity, and a pressure rod is connected to the second support frame through a connecting rod on its upper surface. A support seat is provided below the pressure rod. A spring is provided on the front side of the support seat. One end of the spring is connected to the bottom wall of the cavity, and the other end is connected to the pressure rod. A PCB rotating plate is provided between two free sliding guide devices on the bearing plate. The PCB rotating plate is provided with conductive contact pieces that make the display screen lit up when pressed down by the pressure rod.

2. The display screen dot-matrix double-sided pressing device according to claim 1, characterized in that: The support frame can be fixed as an electromagnet. The two ends of the second support frame are provided with cavities to accommodate the electromagnet. The electromagnet is electrically connected to the control mechanism. When the electromagnet is powered by the control mechanism, it is non-magnetic. When the electromagnet is de-energized, it is magnetic.

3. The display screen dot-matrix double-sided pressing device according to claim 1, characterized in that: The fixed pressing mechanism includes a first support frame and a first pressing head. The first pressing head is connected to the first support frame by a spring. The cross-section of the first support frame is shaped like a figure 7, which includes a horizontal section and a vertical section. The first pressing head includes a horizontal pressing rod and a T-shaped block disposed on the horizontal pressing rod. The T-shaped block is slidably disposed on the end face of the horizontal section. The horizontal pressing rod is at a certain distance from the lower end face of the horizontal section. A spring connected to the horizontal section is provided on the upper end face of the horizontal pressing rod. The structure of the second pressing head is the same as that of the first pressing head.

4. The display screen dot-matrix double-sided pressing device according to claim 3, characterized in that: The upper part of the first support frame and the second support frame is provided with a pressing mechanism.

5. The display screen double-sided pressing device according to claim 1, characterized in that: Handrails are provided at both ends of the first and second support frames on the pressing platform.

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