Bidirectional linkage positioning test mechanism

Abstract

The invention discloses a bidirectional linkage positioning testing mechanism, and aims to provide a bidirectional linkage positioning testing mechanism which is simple in structure, accurate in positioning, compatible with various feeding modes and floating anti-pressing design and capable of meeting synchronous clamping and pin discharging testing of symmetrical products. The device comprises a carrier plate, a clamping air cylinder, positioning modules and a lower pin module, a product profiling groove is formed in the middle of the upper end face of the carrier plate, the product profiling groove is in limiting fit with a main body part of a product, and the two positioning modules are arranged at pressing positions on the two sides of the upper end face of the carrier plate. The movable ends of the two sets of positioning modules are matched with the two sides of the product main body part respectively, the lower pin module is arranged at the lower pin position of the upper end face of the carrier plate, the probe end of the lower pin module is matched with the end of the product main body part, and the clamping air cylinder is arranged at the lower end of the carrier plate. And two groups of movable ends of the clamping cylinder are respectively matched with the driving ends of the two groups of positioning modules. The method is applied to the technical field of product testing.

Description

Technical Field

[0001] The present invention is applied to the technical field of product testing, and particularly relates to a two-way linkage positioning testing mechanism. Background Art

[0002] With the continuous advancement of science and technology, today's electronic products are also constantly innovating. As the most advanced buttons, touch buttons are widely used in mobile phones, smart homes, electronic devices and other solutions, and can be seen everywhere in life. At the same time, people's requirements for electronic consumer products are getting higher and higher, especially the sensitivity and accuracy of touch buttons. In order to ensure sufficient competitiveness, functional tests are often performed on touch buttons to ensure production yield and improve product quality and reputation. The precision test of touch buttons mainly involves contact pressure test and shell conduction test. When the touch screen is subjected to simulated touch force, the touch is converted into an electrical signal and transmitted to the test circuit for detection and judgment. During the test, the product must be positioned very accurately to ensure its test accuracy; and the shell must be tested for four-wire conductive contact signals; the touch buttons currently on the market are generally tested by contour positioning, that is, a groove similar to its shape is designed in the positioning carrier, and the touch button is placed in it for plane positioning, and then the mechanism is used to press and position it in the vertical direction; this method is easy to scratch the surface of the product screen, resulting in a low factory yield of the screen button. Another method is to position it through a pair of positioning holes, which has the disadvantages of low accuracy and inconvenient operation, and this method can only be applied to touch buttons with simple shapes in the three-dimensional direction. If a two-way linkage positioning test mechanism with simple structure, accurate positioning, compatible with multiple feeding methods, floating anti-pressure design, and capable of meeting the synchronous clamping and lower needle testing of symmetrical products can be designed, the above problems can be solved. 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 bidirectional linkage positioning testing mechanism with simple structure, precise positioning, compatibility with multiple feeding methods, floating anti-pressure design, and the ability to meet the requirements of synchronous clamping and needle lowering testing of symmetrical products.

[0004] The technical solution adopted by the present invention is: the present invention includes a carrier plate, a clamping cylinder, a positioning module and a lower needle module, a product profiling groove is arranged in the middle of the upper end surface of the carrier plate, the product profiling groove is limitedly matched with the main body of the product, two groups of the positioning modules are arranged at the press-fit positions on both sides of the upper end surface of the carrier plate, the two groups of movable ends of the positioning modules are respectively matched with the two sides of the main body of the product, the lower needle module is arranged at the lower needle position of the upper end surface of the carrier plate, the probe end of the lower needle module is matched with the end of the main body of the product, the clamping cylinder is arranged at the lower end of the carrier plate, and the two groups of movable ends of the clamping cylinder are respectively matched with the two groups of driving ends of the positioning modules.

[0005] Furthermore, the positioning module includes a connecting plate, a first slide rail, an elastic pressure block, a first probe and a PCB adapter plate. The connecting plate is slidably matched with the carrier plate through the first slide rail, the elastic pressure block is connected to the upper end surface of the connecting plate, and a plurality of the first probes are arranged at the pressing end of the elastic pressure block and are connected and conducted with the PCB adapter plate at the other end of the elastic pressure block. The movable end of the clamping cylinder drives the pressing end of the elastic pressure block and a plurality of the first probes to respectively cooperate with the pressing position and the lower needle position on both sides of the product main body.

[0006] Furthermore, spring covers are provided on both sides of the carrier plate, floating springs are provided between the two groups of spring covers and the two groups of elastic pressure blocks, and the two groups of floating springs drive the two groups of elastic pressure blocks and several of the first probes to cooperate with the main body of the product.

[0007] Furthermore, both movable ends of the clamping cylinder are provided with clamping claw blocks, and the clamping claw blocks pass through the carrier plate and cooperate with one end of the elastic pressing block close to the product.

[0008] Furthermore, the lower needle module includes a second slide rail, a probe push block and a plurality of second probes. The probe push block slides with the carrier plate through the second slide rail. The plurality of second probes are arranged at the lower needle end of the probe push block. The probe push block drives the plurality of second probes to cooperate with the lower needle position at the end of the product main body.

[0009] Furthermore, a buffer spring is provided between the probe end of the probe push block and the carrier plate, and the probe push block is in floating cooperation with the carrier plate through the second slide rail and the buffer spring.

[0010] Furthermore, the carrier plate is provided with a lower needle cylinder, a roller is provided at the movable end of the lower needle cylinder, a slope is provided on the side of the probe push block corresponding to the roller, and the lower needle cylinder drives the roller to cooperate with the slope.

[0011] Furthermore, a cable arrangement positioning block is provided on a side of the carrier away from the lower needle module, and the cable arrangement positioning block is limitedly matched with the cable arrangement end of the product.

[0012] The beneficial effects of the present invention are as follows: the two groups of positioning modules have the same structure and opposite pressing directions, and synchronous clamping can be achieved through one group of clamping cylinders, so that the overall size of the equipment is smaller. After completing the positioning of the screen end of the product, the positioning of the cable end of the product is achieved through the cable positioning block, and the two groups of positioning modules can achieve stable clamping of symmetrical screen products, which can effectively prevent scratches on the screen caused by vertical pressing and screen tilting caused by unidirectional side push positioning, and the pressing is more stable. Since the screen end of the main part of the product is made of fragile material, the present application achieves pressing through the elastic force of the spring, which can avoid the clamping cylinder directly driving the positioning module to press the product, and prevent overpressure from causing product damage. At the same time, the needle lowering module is matched with a roller and an inclined surface, and then matched with a buffer spring for synchronous buffering. After the positioning is completed, the needle lowering test can be performed accurately without the occurrence of needle collision or overpressure, and the detection efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a stereoscopic view of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 is a cross-sectional view of another state of the present invention; Figure 5 is an exploded view of the positioning module; Figure 6 is a three-dimensional view of the lower needle module; Figure 7 is a stereoscopic view of the product. DETAILED DESCRIPTION

[0014] like Figures 1 to 7 As shown, in this embodiment, the present invention includes a carrier plate 1, a clamping cylinder 2, a positioning module 3 and a lower needle module 4. A product profiling groove 5 is provided in the middle of the upper end surface of the carrier plate 1, and the product profiling groove 5 is limitedly matched with the main body of the product 7. Two groups of the positioning modules 3 are arranged at the press-fit positions on both sides of the upper end surface of the carrier plate 1, and the movable ends of the two groups of the positioning modules 3 are respectively matched with the two sides of the main body of the product 7. The lower needle module 4 is arranged at the lower needle position of the upper end surface of the carrier plate 1, and the probe end of the lower needle module 4 is matched with the end of the main body of the product 7. The clamping cylinder 2 is arranged at the lower end of the carrier plate 1, and the two groups of movable ends of the clamping cylinder 2 are respectively matched with the driving ends of the two groups of the positioning modules 3. It can be seen that since the main part of the product 7 is symmetrically designed and has a linkage mechanism design, the pressure blocks on both sides of the Y-axis direction can be clamped simultaneously, which only requires one power to complete. During the pressing process, the clamping cylinder 2 drives the two groups of positioning modules 3 to move toward each other at the pressing ends, and the clamping blocks on both sides move synchronously, which ensures the accuracy of the movement position and simplifies the loading process.

[0015] like Figures 2 to 5 As shown, in this embodiment, the positioning module 3 includes a connecting plate 8, a first slide rail 9, an elastic pressure block 10, a first probe 11 and a PCB adapter plate 12. The connecting plate 8 is slidably matched with the carrier plate 1 through the first slide rail 9. The elastic pressure block 10 is connected to the upper end surface of the connecting plate 8. Several first probes 11 are arranged at the pressing end of the elastic pressure block 10 and are connected and conducted with the PCB adapter plate 12 at the other end of the elastic pressure block 10. The active end of the clamping cylinder 2 drives the pressing end of the elastic pressure block 10 and several first probes 11 to respectively cooperate with the pressing position and the lower needle position on both sides of the main part of the product 7. It can be seen that during the pressing process, the elastic pressure block 10 and several first probes 11 move synchronously, and several first probes 11 preferentially contact the lower needle position of the product 7 to achieve pre-positioning, and then press synchronously. After the pressing is completed, the lower needle conduction operation is completed without the need for separate driving.

[0016] like Figures 2 to 5 As shown, in this embodiment, spring covers 13 are provided on both sides of the carrier 1, and floating springs 14 are provided between the two groups of spring covers 13 and the two groups of elastic pressure blocks 10. The two groups of floating springs 14 drive the two groups of elastic pressure blocks 10 and the first probes 11 to cooperate with the main body of the product 7. It can be seen that when the positioning module 3 presses the workpiece to be measured, it is exerted on it through the action of the spring force, and the cylinder only plays a role when it is released, and does not cause excessive pressure on the workpiece to cause damage.

[0017] like Figures 1 to 4 As shown, in this embodiment, the two movable ends of the clamping cylinder 2 are both provided with a clamping claw block 15, and the clamping claw block 15 passes through the carrier plate 1 and cooperates with the end of the elastic pressing block 10 close to the product 7. It can be seen that the clamping claw block 15 passes through the sliding groove of the carrier plate 1 and cooperates with the elastic pressing block, and then the clamping cylinder 2 is opened to complete the unlocking after the detection is completed.

[0018] like Figure 2 and Figure 6 As shown in the figure, in this embodiment, the lower needle module 4 includes a second slide rail 16, a probe push block 17 and a plurality of second probes 18. The probe push block 17 is slidably matched with the carrier 1 through the second slide rail 16. The plurality of second probes 18 are arranged at the lower needle end of the probe push block 17. The probe push block 17 drives the plurality of second probes 18 to match the lower needle position at the end of the main body of the product 7. It can be seen that after positioning is completed, the plurality of second probes 18 are pushed to the lower needle position through the second slide rail 16 to achieve connection and conduction with the product 7.

[0019] like Figure 6 As shown, in this embodiment, a buffer spring 19 is provided between the probe end of the probe push block 17 and the carrier 1, and the probe push block 17 is floatingly matched with the carrier 1 through the second slide rail 16 and the buffer spring 19. It can be seen that the buffer spring 17 provides the functions of pressing buffer and resetting.

[0020] like Figure 2 As shown, in this embodiment, the carrier plate 1 is provided with a needle lowering cylinder 20, a roller 21 is provided at the movable end of the needle lowering cylinder 20, a slope 22 is provided on the side of the probe push block 17 corresponding to the roller 21, and the needle lowering cylinder 20 drives the roller 21 to cooperate with the slope 22. It can be seen that the needle lowering module 3 is synchronized and buffered by the roller 21 and the slope 22, and can accurately perform the needle lowering test after the positioning is completed, without the occurrence of needle collision or overpressure, and the detection efficiency is higher.

[0021] like Figure 1 and Figure 2 As shown, in this embodiment, a cable positioning block 23 is provided on the side of the carrier 1 away from the lower needle module 4, and the cable positioning block 23 is limitedly matched with the cable end of the product 7. It can be seen that the cable positioning block 23 realizes the positioning of the cable end of the product 7 to prevent the product from being offset or bouncing during the pressing process.

[0022] The working principle of the present invention is as follows: in the initial state, the clamping cylinder 2 is in an extended state, at which time the two groups of positioning modules 3 are in a state of being simultaneously opened outward, and the main body of the product 7 is placed vertically from top to bottom into the product profiling groove 5 of the carrier plate 1 by a manual or mechanical hand, and the wiring part of the product 7 cooperates with the wiring positioning block 23 to complete the positioning. After the positioning is completed, the clamping cylinder 2 retracts, and through the linkage mechanism, under the action of the floating springs 14 on both sides, the two groups of positioning modules 3 move synchronously to the middle respectively, and the positioning is completed. The two sides of the main part of the product 7 are clamped in pairs. After the clamping and positioning are completed, the lower needle cylinder 20 drives the roller 21 to slide on the inclined surface 22, so that the probe push block 17 drives a number of the second probes 18 to connect with the lower needle positions at the end of the main part of the product 7 for conduction. After the conduction is completed, power-on detection is performed. After the detection is completed, the probe push block 17 is reset, the active end of the clamping cylinder 2 is extended, the product 7 is unlocked, and the product 7 to be tested is replaced. Repeat the above steps to realize the two-way linkage positioning test of the touch button product.

[0023] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A two-way linkage positioning test mechanism, comprising a carrier plate (1), a clamping cylinder (2), a positioning module (3) and a lower needle module (4), characterized in that: A product profiling groove (5) is provided in the middle of the upper end surface of the carrier plate (1), and the product profiling groove (5) is limitedly matched with the main part of the product (7). Two groups of positioning modules (3) are arranged at the press-fit positions on both sides of the upper end surface of the carrier plate (1), and the movable ends of the two groups of positioning modules (3) are respectively matched with the two sides of the main part of the product (7). The lower needle module (4) is arranged at the lower needle position of the upper end surface of the carrier plate (1), and the probe end of the lower needle module (4) is matched with the end of the main part of the product (7). The clamping cylinder (2) is arranged at the lower end of the carrier plate (1), and the two groups of movable ends of the clamping cylinder (2) are respectively matched with the driving ends of the two groups of positioning modules (3).

2. A two-way linkage positioning test mechanism according to claim 1, characterized in that: The positioning module (3) comprises a connecting plate (8), a first slide rail (9), an elastic pressure block (10), a first probe (11) and a PCB adapter plate (12); the connecting plate (8) is slidably matched with the carrier plate (1) via the first slide rail (9); the elastic pressure block (10) is connected to the upper end surface of the connecting plate (8); a plurality of the first probes (11) are arranged at the pressing end of the elastic pressure block (10) and are connected and conducted with the PCB adapter plate (12) at the other end of the elastic pressure block (10); the active end of the clamping cylinder (2) drives the pressing end of the elastic pressure block (10) and the plurality of the first probes (11) to respectively match the pressing position and the lower needle position on both sides of the main body of the product (7).

3. A two-way linkage positioning test mechanism according to claim 2, characterized in that: Spring covers (13) are provided on both sides of the carrier plate (1), and floating springs (14) are provided between the two groups of spring covers (13) and the two groups of elastic pressure blocks (10). The two groups of floating springs (14) drive the two groups of elastic pressure blocks (10) and the plurality of first probes (11) to cooperate with the main body of the product (7).

4. A two-way linkage positioning test mechanism according to claim 2, characterized in that: Both sets of movable ends of the clamping cylinder (2) are provided with clamping claw blocks (15), and the clamping claw blocks (15) pass through the carrier plate (1) and cooperate with the end of the elastic pressing block (10) close to the product (7).

5. A two-way linkage positioning test mechanism according to claim 1, characterized in that: The lower needle module (4) comprises a second slide rail (16), a probe push block (17) and a plurality of second probes (18); the probe push block (17) is slidably matched with the carrier plate (1) via the second slide rail (16); the plurality of second probes (18) are arranged at the lower needle end of the probe push block (17); the probe push block (17) drives the plurality of second probes (18) to match the lower needle position at the end of the main body of the product (7).

6. A two-way linkage positioning test mechanism according to claim 5, characterized in that: A buffer spring (19) is provided between the probe end of the probe push block (17) and the carrier plate (1), and the probe push block (17) is in floating cooperation with the carrier plate (1) via the second slide rail (16) and the buffer spring (19).

7. A two-way linkage positioning test mechanism according to claim 6, characterized in that: The carrier plate (1) is provided with a lower needle cylinder (20), a roller (21) is provided at the movable end of the lower needle cylinder (20), a slope (22) is provided on the side of the probe push block (17) corresponding to the roller (21), and the lower needle cylinder (20) drives the roller (21) to cooperate with the slope (22).

8. A two-way linkage positioning test mechanism according to claim 1, characterized in that: A cable arrangement positioning block (23) is provided on a side of the carrier plate (1) away from the lower needle module (4), and the cable arrangement positioning block (23) is limitedly matched with a cable arrangement end of the product (7).

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