Bidirectional linkage positioning test mechanism

Abstract

The application discloses a bidirectional linkage positioning test mechanism, aiming to provide a bidirectional linkage positioning test mechanism with simple structure, accurate positioning, compatibility of multiple feeding modes, floating pressure prevention design, and capability of satisfying symmetrical product synchronous clamping and needle lowering test. The application comprises a carrier plate, clamping cylinders, positioning modules and a needle lowering module. A product profiling groove is arranged in the middle of the upper end face of the carrier plate. The product profiling groove is limitedly matched with a product main body part. Two groups of the positioning modules are arranged on the two sides of the upper end face of the carrier plate. The movable ends of the two groups of the positioning modules are respectively matched with the two sides of the product main body part. The needle lowering module is arranged on the needle lowering position of the upper end face of the carrier plate. The probe end of the needle lowering module is matched with the end of the product main body part. The clamping cylinders are arranged on the lower end of the carrier plate. The two groups of movable ends of the clamping cylinders are respectively matched with the driving ends of the two groups of the positioning modules. The application is applied to the technical field of product test.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of product testing, and particularly relates to a bidirectional linkage positioning testing mechanism. BACKGROUND

[0002] With the continuous progress of science and technology, electronic products are also constantly innovating in technology. Touch buttons, as the current advanced 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 have higher and higher requirements for electronic consumer goods, especially the sensitivity and accuracy of touch buttons. In order to ensure sufficient competitiveness, the functionality of the touch button is often tested to ensure production yield and improve product quality and reputation. The precision test of the touch button mainly includes 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 testing, the product must be positioned accurately to ensure test accuracy, and the shell must be tested for four-wire conduction contact signal. Currently, the touch button is generally positioned by profiling during testing, that is, a groove similar in shape to the touch button is designed in the positioning carrier plate, the touch button is placed in the groove for planar positioning, and the vertical direction is positioned by a mechanism. This method is prone to scratching the surface of the product screen, resulting in low screen button yield. Another method is to position the touch button through a pair of positioning holes, which has the disadvantages of low precision and inconvenient operation. Moreover, this method can only be used for simple touch buttons with a three-dimensional shape. If a bidirectional linkage positioning testing mechanism with simple structure, accurate positioning, compatibility with multiple feeding methods, floating and pressure prevention design, and the ability to meet the needs of symmetrical product synchronous clamping and needle testing is designed, the above problems can be solved. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a bidirectional linkage positioning testing mechanism with simple structure, accurate positioning, compatibility with multiple feeding methods, floating and pressure prevention design, and the ability to meet the needs of symmetrical product synchronous clamping and needle testing.

[0004] The technical solution adopted by the present application is as follows: The present application comprises a carrier plate, a clamping cylinder, a positioning module and a needle lowering module. A product profiling groove is provided in the middle of the upper end face of the carrier plate. The product profiling groove is limited in cooperation with the main body of the product. Two sets of positioning modules are arranged on the two sides of the upper end face of the carrier plate. The movable ends of the two sets of positioning modules are respectively matched with the two sides of the main body of the product. The needle lowering module is arranged at the needle lowering position of the upper end face of the carrier plate. The probe end of the needle lowering 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. The two movable ends of the clamping cylinder are respectively matched with the driving ends of the two sets of positioning modules.

[0005] Further, the positioning module comprises a connecting plate, a first sliding rail, an elastic pressing block, a first probe and a PCB adapter plate, the connecting plate is in sliding fit with the carrier plate through the first sliding rail, the elastic pressing block is connected with the upper end face of the connecting plate, a plurality of first probes are arranged at the pressing end of the elastic pressing block and connected with the PCB adapter plate at the other end of the elastic pressing block for conduction, the movable end of the clamping cylinder drives the pressing end of the elastic pressing block and the plurality of first probes to be in fit with the pressing position and the needle lowering position on both sides of the product body part respectively.

[0006] Further, the carrier plate is provided with spring covers on both sides, floating springs are arranged between the two groups of spring covers and the two groups of elastic pressing blocks, and the two groups of floating springs drive the two groups of elastic pressing blocks and the plurality of first probes to be in fit with the product body part.

[0007] Further, the two movable ends of the clamping cylinder are provided with clamping jaw blocks, the clamping jaw blocks pass through the carrier plate and are in fit with the end of the elastic pressing block close to the product.

[0008] Further, the needle lowering module comprises a second sliding rail, a probe pushing block and a plurality of second probes, the probe pushing block is in sliding fit with the carrier plate through the second sliding rail, and a plurality of second probes are arranged at the needle lowering end of the probe pushing block, the probe pushing block drives the plurality of second probes to be in fit with the needle lowering position at the end of the product body part.

[0009] Further, a buffer spring is arranged between the probe end of the probe pushing block and the carrier plate, and the probe pushing block is in floating fit with the carrier plate through the second sliding rail and the buffer spring.

[0010] Further, the carrier plate is provided with a needle lowering cylinder, the movable end of the needle lowering cylinder is provided with a roller, the probe pushing block is provided with an inclined surface on the side corresponding to the roller, and the needle lowering cylinder drives the roller to be in fit with the inclined surface.

[0011] Further, the carrier plate is provided with a wire positioning block away from the side of the needle lowering module, and the wire positioning block is in limit fit with the wire end of the product.

[0012] The beneficial effects of the present application are: the two groups of positioning modules are the same in structure, the pressing directions are opposite, synchronous clamping can be realized through one group of clamping air cylinders, the overall size of the equipment is smaller, after the positioning of the product screen end is completed, the positioning of the product wire end is realized through the wire positioning block, stable clamping of the symmetrical screen product can be realized through the two groups of positioning modules, screen scratching caused by vertical pressing and screen warping caused by single direction side pushing positioning can be effectively prevented, pressing is more stable, since the screen end of the main body part of the product is a fragile material, the present application realizes pressing through the elastic force of the spring, direct driving of the positioning module by the clamping cylinder to press the product can be avoided, overpressure caused by the clamping cylinder to press the product can be prevented, at the same time, the lower needle module is matched with the roller and the inclined surface, and then matched with the buffer spring for synchronous buffering, accurate lower needle testing can be realized after positioning is completed, needle collision or overpressure can not occur, and the detection efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the present application;

[0014] Figure 2 is an exploded view of the present application;

[0015] Figure 3 is a sectional view of the present application;

[0016] Figure 4 is a sectional view of another state of the present application;

[0017] Figure 5 is an exploded view of the positioning module;

[0018] Figure 6 is a perspective view of the lower needle module;

[0019] Figure 7 is a perspective view of the product. DETAILED DESCRIPTION

[0020] As Figures 1 to 7As shown, in this embodiment, the present invention includes a carrier plate 1, a clamping cylinder 2, a positioning module 3, and a needle insertion module 4. A product contouring groove 5 is provided in the middle of the upper end surface of the carrier plate 1. The product contouring groove 5 is matched with the main body of the product 7. Two sets of positioning modules 3 are arranged at the pressing positions on both sides of the upper end surface of the carrier plate 1. The movable ends of the two sets of positioning modules 3 are respectively matched with the two sides of the main body of the product 7. The needle insertion module 4 is arranged at the needle insertion position on the upper end surface of the carrier plate 1. The probe end of the needle insertion 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. The two sets of movable ends of the clamping cylinder 2 are respectively matched with the driving ends of the two sets of positioning modules 3. As can be seen, since the main body of the product 7 is symmetrically designed and has a linkage mechanism, the clamping blocks on both sides in the Y-axis direction can be clamped simultaneously with only one power source. During the pressing process, the clamping cylinder 2 drives the two sets of positioning modules 3 to move towards each other, and the clamping blocks on both sides move synchronously, which ensures the accuracy of the movement position and simplifies the feeding process.

[0021] 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, first probes 11, and a PCB adapter plate 12. The connecting plate 8 slides with the carrier plate 1 via the first slide rail 9. The elastic pressure block 10 is connected to the upper surface of the connecting plate 8. A plurality of first probes 11 are disposed at the pressing end of the elastic pressure block 10 and connected to the PCB adapter plate 12 at the other end of the elastic pressure block 10. The movable end of the clamping cylinder 2 drives the pressing end of the elastic pressure block 10 and the plurality of first probes 11 to cooperate with the pressing positions and the lower needle positions on both sides of the main body of the product 7, respectively. Thus, during the pressing process, the elastic pressure block 10 and the plurality of first probes 11 move synchronously. The plurality of first probes 11 first contact the lower needle position of the product 7 to achieve pre-positioning, and then press synchronously. After pressing is completed, the lower needle connection operation is completed without the need for separate driving.

[0022] like Figures 2 to 5 As shown, in this embodiment, spring covers 13 are provided on both sides of the carrier plate 1. Floating springs 14 are provided between the two sets of spring covers 13 and the two sets of elastic pressure blocks 10. The two sets of floating springs 14 drive the two sets of elastic pressure blocks 10 and several first probes 11 to cooperate with the main body of the product 7. Therefore, when the positioning module 3 presses the workpiece being tested, the force is applied to it through the spring force. The cylinder only functions when releasing, preventing excessive pressure on the workpiece that could cause damage.

[0023] like Figures 1 to 4As shown in the embodiment, the two groups of movable ends of the clamping cylinder 2 are provided with clamping jaw blocks 15, which are matched with the elastic pressing blocks 10 close to one end of the product 7 through the carrier plate 1. As can be seen, the clamping jaw blocks 15 are matched with the elastic pressing blocks through the sliding grooves of the carrier plate 1, and the clamping cylinder 2 is opened to complete unlocking after detection.

[0024] As Figure 2 and Figure 6 As shown in the embodiment, the lower needle module 4 includes a second sliding rail 16, a probe push block 17, and a plurality of second probes 18. The probe push block 17 is slidingly matched with the carrier plate 1 through the second sliding rail 16, and 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 be matched with the lower needle position of the end portion of the main body of the product 7. As can be seen, after positioning is completed, the plurality of second probes 18 are pushed to the lower needle position through the second sliding rail 16 to realize connection and conduction with the product 7.

[0025] As Figure 6 As shown in the embodiment, a buffer spring 19 is arranged between the probe end of the probe push block 17 and the carrier plate 1, and the probe push block 17 is floatingly matched with the carrier plate 1 through the second sliding rail 16 and the buffer spring 19. As can be seen, the buffer spring 17 provides pressure buffering and resetting functions.

[0026] As Figure 2 As shown in the embodiment, the carrier plate 1 is provided with a lower needle cylinder 20, the movable end of the lower needle cylinder 20 is provided with a roller 21, the side corresponding to the roller 21 of the probe push block 17 is provided with an inclined surface 22, and the lower needle cylinder 20 drives the roller 21 to be matched with the inclined surface 22. As can be seen, the lower needle module 3 is matched with the roller 21 and the inclined surface 22, and is further matched with the buffer spring 17 for synchronous buffering, so that accurate lower needle testing can be performed after positioning is completed, without needle striking or overpressure, and the detection efficiency is higher.

[0027] As Figure 1 and Figure 2 As shown in the embodiment, a wire positioning block 23 is arranged on the side of the carrier plate 1 away from the lower needle module 4, and the wire positioning block 23 is limitingly matched with the wire end of the product 7. As can be seen, the wire positioning block 23 realizes positioning of the wire end of the product 7, preventing the product from being deviated or bounced up during pressure bonding.

[0028] The working principle of the present application: in the initial state, the clamping cylinder 2 is in the extended state, at this time, two groups of positioning modules 3 are respectively in the state of opening outward at the same time, the product 7 main body part is vertically placed from top to bottom into the product profiling groove 5 of the carrier plate 1 by artificial or mechanical hand, the product 7 wire arrangement part is positioned by cooperating with the wire arrangement positioning block 23, after positioning, the clamping cylinder 2 is retracted, through the linkage mechanism, under the action of the floating spring 14 on both sides, two groups of positioning modules 3 respectively move synchronously to the middle, the clamping of the two sides of the product 7 main body part is completed, after clamping and positioning, 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 plurality of second probes 18 to be connected with the lower needle position of the product 7 main body part end, and the conduction is completed, after conduction, the power-on detection is carried out, after detection, the probe push block 17 is reset, the movable end of the clamping cylinder 2 is extended, the product 7 is unlocked, the product 7 to be detected is replaced, and the above steps are repeated, so that the bidirectional linkage positioning test of the touch key product can be realized.

[0029] Although the embodiments of the present application are described in actual schemes, but do not constitute a limitation on the meaning of the present application, for those skilled in the art, according to the modification of the embodiments thereof and the combination with other schemes in the present application are obvious.

Claims

1. A bidirectional 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: The upper end surface of the carrier plate (1) is provided with a product profiling groove (5), which is limitedly matched with the main body of the product (7). Two sets of positioning modules (3) are arranged on both sides of the upper end surface of the carrier plate (1). The movable ends of the two sets of 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 on the lower needle position of the upper end surface of the carrier plate (1). 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). The two movable ends of the clamping cylinder (2) are respectively matched with the driving ends of the two sets of positioning modules (3).

2. The bidirectional linkage positioning test mechanism according to claim 1, characterized in that: The positioning module (3) includes a connecting plate (8), a first sliding rail (9), an elastic pressing block (10), a first probe (11) and a PCB adapter plate (12). The connecting plate (8) is slidably connected with the carrier plate (1) through the first sliding rail (9). The elastic pressing block (10) is connected with the upper end surface of the connecting plate (8). A plurality of first probes (11) are arranged on the pressing end of the elastic pressing block (10) and connected with the PCB adapter plate (12) at the other end of the elastic pressing block (10) for conduction. The movable ends of the clamping cylinder (2) drive the pressing end of the elastic pressing block (10) and the plurality of first probes (11) to be respectively matched with the pressing position and the lower needle position on both sides of the main body of the product (7).

3. The bidirectional linkage positioning test mechanism according to claim 2, characterized in that: The carrier plate (1) is provided with a spring cover (13) on both sides. A floating spring (14) is arranged between the two sets of spring covers (13) and the two sets of elastic pressing blocks (10). The two sets of floating springs (14) drive the two sets of elastic pressing blocks (10) and the plurality of first probes (11) to be matched with the main body of the product (7).

4. The bidirectional linkage positioning test mechanism according to claim 2, characterized in that: The two movable ends of the clamping cylinder (2) are provided with a clamping jaw block (15). The clamping jaw block (15) passes through the carrier plate (1) and is matched with the end of the elastic pressing block (10) close to the product (7).

5. The bidirectional linkage positioning test mechanism according to claim 1, wherein: The probe push block (17) is slidably connected with the carrier plate (1) through the second sliding rail (16). A plurality of second probes (18) are arranged on the lower needle end of the probe push block (17). The probe push block (17) drives the plurality of second probes (18) to be matched with the lower needle position of the end of the main body of the product (7).

6. The bidirectional linkage positioning test mechanism according to claim 5, wherein: The probe push block (17) is provided with a buffer spring (19) between the probe end and the carrier plate (1), and the probe push block (17) is floatingly matched with the carrier plate (1) through the second sliding rail (16) and the buffer spring (19).

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