A flat push type pneumatic jig applied to a TRI test platform

Abstract

The utility model provides a kind of flat push type pneumatic tool applied to TRI test platform, which is simple in structure, replaces vacuum suction by mechanical mechanism linkage, drives the vertical movement of upper and lower molds of test equipment, and simultaneously does not need to carry out air-tightness treatment on the equipment. The utility model comprises an upper mold box and a lower mold box hinged to each other by a rotating shaft, an upper needle plate and a lower needle plate are respectively arranged in the upper mold box and the lower mold box, a driving cylinder is arranged at the outer end of both sides of the upper mold box and the lower mold box, a driving frame is arranged in the upper mold box, a pushing cylinder is further arranged at the hinge of the upper mold box and the lower mold box, the pushing cylinder drives the driving frame to reciprocate along the extension line of the side plate in the upper mold box, the left and right sides of the upper needle plate are movably connected with the driving frame through a follow-up bearing set, and reciprocate along the extension direction of the vertical line of the side plate with the movement of the driving frame. The utility model is suitable for the field of printed circuit board online testing technology.

Description

Technical Field

[0001] This utility model relates to the field of online testing technology for printed circuit boards, and in particular to a push-type pneumatic fixture applied to a TRI testing platform. Background Technology

[0002] During the circuit board manufacturing process, functional testing is required to ensure that the circuit board meets subsequent usage requirements. Circuit board testing typically involves connecting and pressing the electronic components on the circuit board using a pin mold or pin plate, followed by testing with external testing equipment. Currently, most TR8100 testing platforms on the market use vacuum fixtures to press the circuit board and probes together. This requires installing a vacuum negative pressure suction stage on the testing equipment and pressing the circuit board onto the probe plate through vacuum suction. However, the suction force generated during vacuum fixture suction is relatively large, which may cause deformation of the circuit board under test, damaging the circuit board or probes. At the same time, the equipment requires a high degree of airtightness. If air leakage occurs, it will lead to insufficient suction force of the fixture and insufficient opening and closing angle of the fixture, resulting in damage to components. Moreover, many circuit boards require card insertion and built-in heat sink modules during testing, which is not conducive to the airtightness of the equipment. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a simple, horizontally-push pneumatic fixture for the TRI testing platform. This fixture uses a mechanical linkage mechanism to replace vacuum suction, driving the upper and lower molds of the testing equipment to move vertically without requiring airtightness treatment of the equipment.

[0004] The technical solution adopted by this utility model is as follows: This utility model includes an upper mold box and a lower mold box that are hinged to each other by a rotating shaft. An upper needle plate and a lower needle plate are respectively provided in the upper mold box and the lower mold box. A driving cylinder is provided at the outer ends of both sides of the upper mold box and the lower mold box. A driving frame is provided in the upper mold box. A pushing cylinder is also provided at the hinge of the upper mold box and the lower mold box. The pushing cylinder drives the driving frame to reciprocate along the extension line of the side plate in the upper mold box. The left and right sides of the upper needle plate are movably connected to the driving frame through a follower bearing assembly, and reciprocate along the vertical extension direction of the side plate as the driving frame moves.

[0005] Furthermore, the drive frame includes a flat push plate that is driven and connected to the push cylinder and side push plates that are respectively disposed on both sides of the flat push plate. A plurality of follower groove groups are arranged in parallel on the side push plates, and the follower bearing group is movably connected to the follower groove group.

[0006] Furthermore, the follower groove assembly consists of a horizontal U-shaped groove, an inclined waist-shaped groove, and a vertical U-shaped groove fixedly disposed on the inner side wall of the upper mold box. The end of the horizontal U-shaped groove away from the push cylinder is located at the midpoint of the inclined waist-shaped groove, and the end of the inclined waist-shaped groove near the push cylinder is located at the midpoint of the horizontal U-shaped groove. The end of the inclined waist-shaped groove away from the push cylinder is positioned higher than the end near the push cylinder. The vertical U-shaped groove is disposed at the end of the inclined waist-shaped groove away from the push cylinder.

[0007] Furthermore, the follower bearing assembly consists of a first bearing and a second bearing that are movably connected to the horizontal U-shaped groove and the inclined waist-shaped groove, respectively. The first bearing is positioned closer to the push cylinder than the second bearing, and the second bearing is movably connected to the vertical U-shaped groove. The first bearing is fixedly mounted on the inner wall of the upper mold box side plate.

[0008] Furthermore, several locking grooves are provided at the lower end of the two side push plates, and locking bearings adapted to the several locking grooves are provided inside the left and right sides of the lower mold box. The locking groove is located at the middle position of the inclined waist-shaped groove at the end away from the push cylinder, and the locking groove is located at the same position as the inclined waist-shaped groove near the push cylinder.

[0009] Furthermore, a gas spring connected to the upper mold box and the lower mold box is also provided on the rear side of the drive cylinder.

[0010] Finally, a handle is also provided on the front end face of the upper mold box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a push cylinder located at the hinge of the upper mold box and the lower mold box to drive the drive frame located inside the upper mold box to move in the side plate extension direction. Follower bearing assemblies located on both sides of the upper needle plate are slidably connected to the horizontal U-shaped groove and the inclined waist-shaped groove located on the left and right sides of the drive frame, respectively. Under the combined restraint of the inclined waist-shaped groove and the vertical U-shaped groove, the horizontal pushing force obtained by the upper needle plate with the drive plate is converted into a vertical pushing force, causing the upper needle plate to complete a reciprocating motion in the vertical direction. That is, during testing, the upper needle plate moves downward, and the PCB board contacts the probe; after the test is completed, the upper needle plate moves upward, and the PCB board leaves the probe. There is no need to install a vacuum stage in the testing equipment, nor is it necessary to consider sealing treatment. Therefore, this utility model has a simple structure, using mechanical linkage to replace vacuum suction, driving the upper and lower molds of the testing equipment to move vertically, while eliminating the need for airtight treatment of the equipment. Attached Figure Description

[0012] Figure 1 This is an axial schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is an assembly diagram of the push cylinder, the drive frame, and the upper needle plate;

[0014] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram. Detailed Implementation

[0015] like Figures 1 to 3 As shown, this utility model includes an upper mold box 2 and a lower mold box 3 hinged together by a pivot 1. An upper needle plate 4 and a lower needle plate 5 are respectively disposed inside the upper mold box 2 and the lower mold box 3. Drive cylinders 9 are disposed at the outer ends of both sides of the upper mold box 2 and the lower mold box 3. A drive frame is disposed inside the upper mold box 2. A push cylinder 6 is also disposed at the hinge point between the upper mold box 2 and the lower mold box 3. The push cylinder 6 drives the drive frame to reciprocate along the extension line of the side plate within the upper mold box 2. The left and right sides of the upper needle plate 4 are movably connected to the drive frame via follower bearing assemblies, and reciprocate along the vertical extension direction of the side plate as the drive frame moves. A gas spring 17 connected to the upper mold box 2 and the lower mold box 3 is disposed behind the drive cylinder 9. A handle 18 is also disposed on the front end face of the upper mold box 2.

[0016] In this utility model, the drive frame includes a flat push plate 7 that is driven and connected to the push cylinder 6 and side push plates 8 that are disposed on both sides of the flat push plate 7. A plurality of follower groove groups are arranged in parallel on the side push plate 8, and the follower bearing group is movably connected to the follower groove group.

[0017] The follower groove assembly consists of a horizontal U-shaped groove 10, an inclined waist-shaped groove 11, and a vertical U-shaped groove 12 fixedly disposed on the inner side wall of the upper mold box 2. The end of the horizontal U-shaped groove 10 away from the push cylinder 6 is located at the midpoint of the inclined waist-shaped groove 11, and the end of the inclined waist-shaped groove 11 near the push cylinder 6 is located at the midpoint of the horizontal U-shaped groove 10. The end of the inclined waist-shaped groove 11 away from the push cylinder 6 is positioned higher than the end near the push cylinder 6. The vertical U-shaped groove 12 is disposed at the end of the inclined waist-shaped groove 11 away from the push cylinder 6.

[0018] In this utility model, the follower bearing assembly consists of a first bearing 13 and a second bearing 14 that are movably connected to the horizontal U-shaped groove 10 and the inclined waist-shaped groove 11, respectively. The first bearing 13 is positioned closer to the push cylinder 6 than the second bearing 14. The second bearing 14 is movably connected to the vertical U-shaped groove 12. The first bearing 13 is fixedly mounted on the inner wall of the side plate of the upper mold box 2.

[0019] Several locking grooves 15 are provided at the lower ends of the two side push plates 8. Locking bearings 16 adapted to the locking grooves 15 are provided inside the left and right sides of the lower mold box 3. The locking groove 15 is located at the middle position of the inclined waist-shaped groove 11 at the end away from the push cylinder 6. The locking groove 15 is located at the same position as the inclined waist-shaped groove 11 near the push cylinder 6.

[0020] In this utility model, the bottom of the lower mold box 3 is provided with an interface panel that is electrically connected to the lower needle plate 5, and is connected to the TR8100LLV test platform through the panel. The solenoid valve controller on the test platform is electrically connected to the drive cylinder 9 and the push cylinder 6. The drive cylinder 9 drives the opening and closing of the upper mold box 2 and the lower mold box 3, and the push cylinder 6 pushes the drive frame to reciprocate inside the upper mold box 2 along the extension direction of the side plate of the upper mold box 2. During testing, the drive cylinder 9 is activated, driving the upper mold box 2 downwards to engage with the lower mold box 3. At this time, the locking bearing 16 enters the locking groove 15. The push cylinder 6 is activated, driving the drive frame to push outwards along the extension direction of the side plate of the upper mold box 2. The locking bearing 16 follows and enters the locking groove 15, thus locking the upper mold box 2 and the lower mold box 3. The first bearing 13 moves towards the push cylinder 6 within the horizontal U-shaped groove 10, while the second bearing 14 moves simultaneously within the inclined waist-shaped groove 11 and the vertical U-shaped groove 12. Under the combined constraint of the inclined waist-shaped groove 11 and the vertical U-shaped groove 12, the movement of the upper needle plate 4, which should have been horizontal, is converted into vertical movement. This causes the components mounted on the upper needle plate 4 to press against the lower needle plate 5, making the product under test contact the probe. The signal is successfully transmitted to the interface panel and then to the test platform, thus realizing the testing of the circuit board. This invention utilizes a simple mechanical transmission mechanism to replace the vacuum stage on the original testing equipment, providing the clamping power for the upper needle plate 4 and the lower needle plate 5, and also solving the problem of ensuring the airtightness of the equipment due to the requirements of the vacuum stage.

[0021] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A push-type pneumatic fixture for use in a TRI testing platform, comprising an upper mold box (2) and a lower mold box (3) hinged together by a rotating shaft (1), wherein an upper needle plate (4) and a lower needle plate (5) are respectively provided inside the upper mold box (2) and the lower mold box (3), and driving cylinders (9) are provided at the outer ends of both sides of the upper mold box (2) and the lower mold box (3), characterized in that: A drive frame is provided inside the upper mold box (2), and a push cylinder (6) is also provided at the hinge between the upper mold box (2) and the lower mold box (3). The push cylinder (6) drives the drive frame to reciprocate along the extension line of the side plate inside the upper mold box (2). The left and right sides of the upper needle plate (4) are movably connected to the drive frame through a follower bearing assembly, and reciprocate along the vertical extension direction of the side plate as the drive frame moves.

2. The push-type pneumatic fixture for use on a TRI testing platform according to claim 1, characterized in that: The drive frame includes a flat push plate (7) that is driven and connected to the push cylinder (6) and side push plates (8) that are respectively disposed on both sides of the flat push plate (7). A plurality of follower groove groups are arranged in parallel on the side push plates (8), and the follower bearing group is movably connected to the follower groove group.

3. A push-type pneumatic fixture for use on a TRI testing platform according to claim 2, characterized in that: The follower groove group consists of a horizontal U-shaped groove (10), an inclined waist-shaped groove (11), and a vertical U-shaped groove (12) fixedly installed on the inner side wall of the upper mold box (2). The end of the horizontal U-shaped groove (10) away from the push cylinder (6) is located at the midpoint of the inclined waist-shaped groove (11). The end of the inclined waist-shaped groove (11) near the push cylinder (6) is located at the midpoint of the horizontal U-shaped groove (10). The end of the inclined waist-shaped groove (11) away from the push cylinder (6) is positioned higher than the end near the push cylinder (6). The vertical U-shaped groove (12) is located at the end of the inclined waist-shaped groove (11) away from the push cylinder (6).

4. A push-type pneumatic fixture for use on a TRI testing platform according to claim 3, characterized in that: The follower bearing assembly consists of a first bearing (13) and a second bearing (14) that are movably connected to the horizontal U-shaped groove (10) and the inclined waist-shaped groove (11), respectively. The first bearing (13) is positioned closer to the push cylinder (6) than the second bearing (14). The second bearing (14) is movably connected to the vertical U-shaped groove (12). The first bearing (13) is fixedly mounted on the inner wall of the side plate of the upper mold box (2).

5. A push-type pneumatic fixture for use on a TRI testing platform according to claim 4, characterized in that: Several locking grooves (15) are provided at the lower end of the two side push plates (8). Locking bearings (16) that are compatible with the locking grooves (15) are provided inside the left and right sides of the lower mold box (3). The locking groove (15) is located at the middle position of the inclined waist-shaped groove (11) at the end away from the push cylinder (6). The locking groove (15) is located at the same position as the inclined waist-shaped groove (11) near the push cylinder (6).

6. A push-type pneumatic fixture for use on a TRI testing platform according to claim 5, characterized in that: A gas spring (17) is also provided on the rear side of the drive cylinder (9) and connected to the upper mold box (2) and the lower mold box (3).

7. A push-type pneumatic fixture for use on a TRI testing platform according to claim 6, characterized in that: A handle (18) is also provided on the front end face of the upper mold box (2).

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