Clamp for SMT (Surface Mount Technology)

Abstract

The utility model discloses a fixture for SMT (Surface Mount Technology), which relates to the field of SMT processing and comprises a placement bottom plate and at least two clamping parts arranged at the top of the placement bottom plate, and each clamping part comprises a movable support column arranged at the top of the placement bottom plate and a first fixture arranged at the top of the inner wall of the movable support column. The second clamp is hinged to the first clamp and located on the top of the inner wall of the movable supporting column, and the two fan-shaped grooves are formed in the top of the inner wall of the movable supporting column in an embedded mode. According to the utility model, the clamping range of the large clamp to different circuit boards is increased, and the clamping stability of the circuit boards is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of SMT chip mounting processing, and specifically relates to a fixture for SMT chip mounting. Background Technique

[0002] SMT chip mounting is a circuit assembly technology that mounts pinless or short-lead surface-mounted components on the surface of a printed circuit board or the surface of other substrates and is soldered and assembled by methods such as reflow soldering or dip soldering. This technology has the advantages of compact structure, high assembly density, small volume, small mass, good high-frequency characteristics, good shock resistance and impact resistance, etc., which is conducive to improving the reliability of products.

[0003] According to a SMT chip mounting fixture provided by application number CN201920019782.1, including a base, one side of the base is slidably connected with a first clamping block and a second clamping block, a through groove is opened inside the first clamping block, a runner is arranged inside the through groove, a first fixing frame, a second fixing frame and a counterweight are arranged on the edge of the runner, a relief groove is opened on the side surfaces of the first clamping block and the second clamping block close to each other, a chip is placed inside the relief groove, and the edge of the chip touches the groove wall of the relief groove. The utility model solves the problem that the manual clamping of SMT chips is not stable enough, which affects the service performance of the circuit board. Different chips can be selected for clamping according to actual processing needs, the applicable range is greatly improved, the production efficiency is improved, and the practicability is enhanced.

[0004] The above device is applicable to the circuit board to be processed with relatively regular right angles, but it cannot better clamp some special-shaped or irregular circuit boards. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a fixture for SMT chip mounting to solve the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A fixture for SMT chip mounting, including a placement bottom plate, and at least two clamping components arranged on the top of the placement bottom plate. The clamping component includes a moving support column on the top of the placement bottom plate, a first fixture on the top inner wall of the moving support column, a second fixture hinged on the top inner wall of the moving support column and located inside the moving support column, and two sector-shaped grooves embedded on the top inner wall of the moving support column.

[0008] Preferably, one end of the first fixture is hinged to the top inner wall of the moving support column, an installation round block is arranged at the other end of one end of the first fixture, an adjustment motor is arranged inside the installation round block, and a workpiece gripper is arranged at the top execution end of the adjustment motor.

[0009] Preferably, the bottom of the workpiece gripper is slidably connected to the top of the placement round block and the top of the first fixture; a limiting groove is embedded in the side wall of the workpiece gripper.

[0010] Preferably, the second fixture has the same structure as the first fixture, the second fixture and the first fixture are arranged at an angle and are respectively located in two sector-shaped grooves embedded in the top of the inner wall of the moving support pillar.

[0011] Preferably, a return spring is provided on one side of the sector-shaped groove and embedded in the top of the inner wall of the moving support pillar; one ends of the two return springs are arranged on the inner wall of the moving support pillar, and the other ends are respectively arranged on the side walls of the first fixture and the second fixture.

[0012] Preferably, a horizontal limiting groove is provided on one side of the top of the placement bottom plate, a longitudinal limiting groove is provided at one end of the top of the placement bottom plate, and the bottom of the moving support pillar is slidably connected to the top of the placement bottom plate.

[0013] Preferably, the bottom of the moving support pillar is driven by a screw block connected to the bottom of the placement bottom plate.

[0014] In summary, the main beneficial effects of this technical solution are as follows:

[0015] On the premise that the fixtures in the device can move both horizontally and vertically, the clamping parts of the first fixture and the second fixture for the circuit board are designed so that the axial direction of the clamped part can also be rotationally adjusted, further increasing the possibility of clamping various circuit boards, and thus increasing the scope of use;

[0016] In addition, while stably clamping the circuit board by adjustment, the limiting groove provides auxiliary support for the bottom of the circuit board, further increasing the clamping stability. At the same time, it assists in SMT chip mounting processing, making it more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric view of the overall structure of the present utility model;

[0018] Figure 2 is an axonometric view of the overall structure of the clamping component of the present utility model;

[0019] Figure 3 is a cross-sectional view of the overall structure of the clamping component of the present utility model;

[0020] Figure 4 is a plan view of the overall structure of the clamping component of the present utility model;

[0021] Figure 5 is an axonometric view of the structure of the workpiece gripper of the present utility model;

[0022] Figure 6Isometric view of the first fixture structure of the present utility model.

[0023] Description of the drawings: 10. Placement base plate; 11. Lateral limit groove; 12. Longitudinal limit groove; 20. Clamping component; 21. Moving support pillar; 22. First fixture; 23. Second fixture; 24. Sector-shaped groove; 221. Placement round block; 222. Adjusting motor; 223. Workpiece gripper; 224. Limit groove; 241. Return spring. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0025] Embodiment

[0026] As Figure 1 、 2 、Figure 3 shows, including a placement base plate 10, and at least two clamping components 20 on the top of the placement base plate 10. The clamping component 20 includes a moving support pillar 21 on the top of the placement base plate 10, a first fixture 22 on the inner wall top of the moving support pillar 21, and a second fixture 23 that is hinged and located on the inner wall top of the moving support pillar 21.

[0027] The second fixture 23 has the same structure as the first fixture 22. The second fixture 23 and the first fixture 22 are arranged at an angle and are respectively located in two sector-shaped grooves 24 embedded in the inner wall top of the moving support pillar 21.

[0028] It should be noted that in this embodiment, during the process of reducing the range of the clamping component 20 by adjusting the screw block, two return springs 241 on the side walls of the first fixture 22 and the second fixture 23 are compressed to adjust the angle between the first fixture 22 and the second fixture 23 in the sector-shaped groove 24. At the same time, the return springs 241 react on the first fixture 22 and the second fixture 23, so that the first fixture 22 and the second fixture 23 can better clamp the circuit board, increasing the clamping stability.

[0029] Furthermore, the side wall of the circuit board is embedded in the inner wall of the limit groove 224. One clamping component 20 has two workpiece grippers 223, and the two workpiece grippers 223 limit the four side walls of the circuit board. When the clamped circuit board is rectangular, the circuit board can be clamped by continuously reducing the clamping range.

[0030] As Figure 2 、 5, as shown in Figures 6, it includes a placement base plate 10, and at least two clamping components 20 on the top of the placement base plate 10. The clamping component 20 includes a moving pillar 21 on the top of the placement base plate 10, a first clamp 22 at the top inner wall of the moving pillar 21, a second clamp 23 that is hinged and located at the top inner wall of the moving pillar 21, and the bottom of the workpiece gripper 223 is slidably connected to the top of the placement block 221 and the top of the first clamp 22; a limiting groove 224 is embedded in the side wall of the workpiece gripper 223;

[0031] One end of the first clamp 22 is hingedly arranged at the top inner wall of the moving pillar 21. An arrangement block 221 is provided at the other end of the first clamp 22. An adjusting motor 222 is arranged inside the arrangement block 221, and a workpiece gripper 223 is provided at the top execution end of the adjusting motor 222;

[0032] It should be noted that in this embodiment, when the clamped circuit board is not a regular shape, by controlling the adjusting motor 222 inside the arrangement block 221, the execution end of the adjusting motor 222 drives the workpiece gripper 223 to rotate. According to the side wall angle of the special-shaped circuit board, the angle of the workpiece gripper 223 at the corresponding position is adjusted accordingly, so that the limiting groove 224 on the side wall of the workpiece gripper 223 can better clamp and support the circuit board.

[0033] Similarly, the four workpiece grippers 223 can all be adjusted to better adapt to and fit the side wall of the circuit board, achieving the best clamping effect.

[0034] Such as Figure 1 、 3 , as shown in Figures 4, it includes a placement base plate 10, and at least two clamping components 20 on the top of the placement base plate 10, and two sector-shaped grooves 24 embedded in the top inner wall of the moving pillar 21; a return spring 241 is arranged on one side of the sector-shaped groove 24 and embedded in the top inner wall of the moving pillar 21; one end of the two return springs 241 is on the inner wall of the moving pillar 21, and the other ends are respectively on the side walls of the first clamp 22 and the second clamp 23;

[0035] A horizontal limiting groove 11 is arranged on one side of the top of the placement base plate 10, and a vertical limiting groove 12 is arranged at one end of the top of the placement base plate 10. The bottom of the moving pillar 21 is slidably connected to the top of the placement base plate 10; the bottom of the moving pillar 21 is driven by the screw block connection at the bottom of the placement base plate 10.

[0036] It should be noted that in this embodiment, according to the approximate size of the circuit board to be processed, the moving pillar 21 is driven to move through the screw block connection at the bottom of the placement base plate 10, so as to drive the two clamping components 20 to approach each other. The horizontal limiting groove 11 and the vertical limiting groove 12 on the top of the placement base plate 10 limit the moving pillar 21 horizontally and vertically. By continuously approaching the two clamping components 20, the clamping area is reduced, and the side wall of the circuit board is clamped.

[0037] The working principle of the present utility model is as follows:

[0038] First, according to the approximate size of the circuit board to be processed on behalf of others, the screw block connection at the bottom of the placement base plate 10 drives the moving support column 21 to move, so as to drive the two clamping components 20 to approach each other. The horizontal limiting groove 11 and the vertical limiting groove 12 at the top of the placement base plate 10 limit the horizontal and vertical directions of the moving support column 21. By continuously approaching the two clamping components 20, the clamping area is reduced, and the side wall of the circuit board is clamped.

[0039] Meanwhile, during the process of the range reduction, the two reset springs 241 on the side walls of the first clamp 22 and the second clamp 23 are compressed to adjust the included angle between the first clamp 22 and the second clamp 23 in the sector-shaped groove 24. At the same time, the reset springs 241 act on the first clamp 22 and the second clamp 23 with a reaction force, so that the first clamp 22 and the second clamp 23 can better clamp the circuit board, increasing the clamping stability.

[0040] Further, the side wall of the circuit board is embedded in the inner wall of the limiting groove 224. One clamping component 20 has two workpiece grippers 223, and the two workpiece grippers 223 limit the four side walls of the circuit board. When the circuit board to be clamped is rectangular, the circuit board can be clamped by continuously reducing the clamping range.

[0041] When the circuit board to be clamped is not a regular shape, by controlling the adjustment motor 222 on the inner wall of the placement circular block 221, the execution end of the adjustment motor 222 drives the workpiece gripper 223 to rotate. According to the side wall angle of the special-shaped circuit board, the angle of the workpiece gripper 223 at the corresponding position is adjusted correspondingly, so that the limiting groove 224 on the side wall of the workpiece gripper 223 can better clamp and support the circuit board.

[0042] Similarly, the four workpiece grippers 223 can all be adjusted to better adapt to and fit the side wall of the circuit board, achieving the best clamping effect.

[0043] The above embodiments are only used to illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present utility model falls within the protection scope of the present utility model.

Claims

1. A fixture for SMT chip mounting, comprising a placement base plate (10), and at least two clamping components (20) arranged on the top of the placement base plate (10), characterized in that , the clamping member (20) includes a moving pillar (21) on the top of the placement base plate (10), a first fixture (22) on the top inner wall of the moving pillar (21), a second fixture (23) that is hinged and located on the top inner wall of the moving pillar (21), and two sector-shaped grooves (24) embedded in the top inner wall of the moving pillar (21).

2. The fixture for SMT patching according to claim 1, characterized in that, One end of the first fixture (22) is hinged to the top inner wall of the moving pillar (21), and a placement round block (221) is provided at the other end of the first fixture (22). An adjustment motor (222) is provided inside the placement round block (221), and a workpiece gripper (223) is provided at the top execution end of the adjustment motor (222).

3. The jig for SMT patching according to claim 2, wherein, The bottom of the workpiece gripper (223) is slidably connected to the top of the placement round block (221) and the top of the first fixture (22); a limit groove (224) is embedded in the side wall of the workpiece gripper (223).

4. A fixture for SMT patching according to claim 1, characterized in that, The second fixture (23) has the same structure as the first fixture (22), and the second fixture (23) is arranged at an angle with the first fixture (22) and is respectively located in two sector-shaped grooves (24) embedded in the top inner wall of the moving pillar (21).

5. A fixture for SMT chip mounting according to claim 1, characterized in that, A return spring (241) is provided on one side of the sector-shaped groove (24) and embedded in the top inner wall of the moving pillar (21); one end of the two return springs (241) is provided on the inner wall of the moving pillar (21), and the other ends are respectively provided on the side walls of the first fixture (22) and the second fixture (23).

6. The fixture for SMT chip mounting according to claim 1, wherein A lateral limit groove (11) is provided on one side of the top of the placement base plate (10), a longitudinal limit groove (12) is provided at one end of the top of the placement base plate (10), and the bottom of the moving pillar (21) is slidably connected to the top of the placement base plate (10).

7. The fixture for SMT patching according to claim 1, wherein The bottom of the moving pillar (21) is driven by a screw block connection provided at the bottom of the placement base plate (10).

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