Clamping jig for PCB (printed circuit board) processing

Abstract

The utility model relates to the field of PCB (printed circuit board) processing, and discloses a PCB processing clamping jig, which comprises a workbench, a clamping device and a clamping device, the driving mechanism is arranged in the workbench; the fixing mechanism is arranged on the upper surface of the workbench; wherein the fixing mechanism comprises a first L-shaped plate which is arranged on the upper surface of the workbench, and the first L-shaped plate is fixedly connected with the corner of the workbench; the second L-shaped plate is arranged on the upper surface of the workbench in a sliding mode, and a notch of the second L-shaped plate and a notch of the first L-shaped plate are arranged diagonally; the fixing hole is formed in the side, close to the first L-shaped plate, of the second L-shaped plate; one end of the spring is fixedly connected with the bottom surface of the fixing hole; and the connecting plate is arranged at the other end of the spring. The PCB machining clamping jig solves the problems that the length and width proportions formed by four sliding blocks of an existing device are the same, and the requirement for fixing PCBs with different length and width proportions cannot be met.

Description

Technical Field

[0001] The utility model belongs to the field of PCB board processing, and particularly relates to a clamping fixture for PCB board processing. Background Technique

[0002] PCB, the Chinese name is printed circuit board, also known as printed wiring board, is an important electronic component, a support for electronic components, and a carrier for the electrical interconnection of electronic components. Since it is made by electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from small electronic watches and calculators to large computers, communication electronic devices, and military weapon systems, as long as there are electronic components such as integrated circuits, printed boards are used to make the electrical interconnection between each component. After the production of the PCB board, it is necessary to test the PCB board. During the test, it is necessary to clamp and fix the PCB board through a clamping fixture. When the existing PCB board is used, it needs to be fixed point by point in sequence, and there are still some drawbacks.

[0003] The Chinese utility model patent with the publication number of CN218473739U discloses a PCB board clamping fixture. Through four sliding grooves are arranged on the support plate along the diagonal directions, sliders are slidably connected to the inner sides of the sliding grooves, a limiting block for clamping and fixing the PCB board is fixedly connected to the top of the slider, the limiting block is arranged in an "L" shape, and the four limiting blocks can move synchronously towards the center of the support plate. The extrusion and fixation of the PCB board are realized by the synchronous movement of the four limiting blocks towards the center of the support plate, so as to realize the clamping function, simplify the steps, and improve the production efficiency. Under the action of the tension spring, there is a force for the slider and the limiting block to reset towards the outside of the support plate, which is convenient for the detection of the next PCB board. Pull the mother pull rope, and the mother pull rope pulls the son pull rope to drive the four sliders to move synchronously towards the inside of the support plate. However, this device still has some problems. For example, the mother pull rope of this device pulls the son pull rope to drive the four sliders to move simultaneously, so that the ratio of the length and width formed by the four sliders is the same, and it cannot meet the fixation of PCB boards with different length-width ratios. Content of the Utility Model

[0004] The purpose of the utility model is to provide a clamping fixture for PCB board processing to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the following technical solutions are provided: A clamping fixture for PCB board processing, comprising:

[0006] A workbench;

[0007] A driving mechanism configured inside the workbench;

[0008] A fixing mechanism configured on the upper surface of the workbench;

[0009] Among them, the fixing mechanism includes:

[0010] The first L-shaped plate is arranged on the upper surface of the workbench, and the first L-shaped plate is fixedly connected to the corner of the workbench;

[0011] The second L-shaped plate is slidably arranged on the upper surface of the workbench, and the notch of the second L-shaped plate is arranged diagonally to the notch of the first L-shaped plate;

[0012] The fixing hole is opened on the side of the second L-shaped plate close to the first L-shaped plate;

[0013] One end of the spring is fixedly connected to the bottom surface of the fixing hole;

[0014] The connecting plate is arranged at the other end of the spring.

[0015] In the above technical solution, further, the driving mechanism includes:

[0016] The sliding groove is opened on the upper surface of the workbench;

[0017] The threaded rod is arranged inside the sliding groove;

[0018] The motor is arranged outside the workbench, and the output shaft of the motor penetrates the workbench and is fixedly connected to one end of the threaded rod;

[0019] The sliding block is sleeved on the threaded rod, and the upper surface of the sliding block is fixedly connected to the lower surface of the second L-shaped plate.

[0020] In any of the above technical solutions, further, the sliding groove is opened along the diagonal direction of the first L-shaped plate and the second L-shaped plate.

[0021] In any of the above technical solutions, further, an inclined portion is provided on the side of the connecting plate close to the first L-shaped plate, and the inclined portion makes the cross-section of the connecting plate wider at the top and narrower at the bottom.

[0022] In any of the above technical solutions, further, a buffer block is provided on the side of the inclined portion close to the first L-shaped plate.

[0023] In any of the above technical solutions, further, the corner of the workbench away from the first L-shaped plate is cut off to form a flat surface.

[0024] In any of the above technical solutions, further, a receiving plate is fixedly arranged on the flat surface, and the motor is fixed on the receiving plate.

[0025] The beneficial effects of the present utility model are:

[0026] 1. A first L-shaped plate is fixedly arranged at a corner of the workbench. The two plates of the first L-shaped plate are in contact with the two side plates of the workbench. A slidable second L-shaped plate is arranged at the diagonal of the first L-shaped plate. The notch of the second L-shaped plate is opposite to the notch of the first L-shaped plate. At the same time, a plurality of fixing holes are opened on the two side plates of the second L-shaped plate. One end of a spring is fixedly connected inside each fixing hole, and the other end of the spring is fixedly connected with a connecting plate. By changing the position of the second L-shaped plate, a square fixing area can be formed between the second L-shaped plate and the first L-shaped plate. By changing the positions of the two connecting plates on the second L-shaped plate through the spring, a fixing area with any length-width ratio can be formed between the two connecting plates and the first L-shaped plate. Therefore, PCB boards with different length-width ratios can be fixed.

[0027] 2. A driving mechanism is arranged to drive the second L-shaped plate to change its position. The sliding groove of the driving mechanism is opened along the direction of the diagonal connection line of the first L-shaped plate and the second L-shaped plate. A threaded rod is arranged inside the sliding groove. A sliding block is sleeved on the threaded rod. The upper surface of the sliding block is flush with the upper surface of the workbench, and the upper surface and the lower surface of the sliding block are fixedly connected. One end of the threaded rod is fixedly connected with the output shaft of a motor. The motor is fixedly installed outside the workbench. By rotating the motor to drive the threaded rod to rotate self, the sliding block can be driven to change its position along the direction of the threaded rod, thereby changing the position of the second L-shaped plate, and finally changing to a position suitable for the size of the PCB board. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present utility model;

[0029] Figure 2 is a schematic structural diagram of the present utility model;

[0030] Figure 3 is a schematic sectional structural diagram of the present utility model;

[0031] Description of the Reference Numerals: 100, workbench; 110, flat surface; 120, receiving plate; 200, driving mechanism; 210, sliding groove; 220, threaded rod; 230, motor; 240, sliding block; 300, fixing mechanism; 310, first L-shaped plate; 320, second L-shaped plate; 330, fixing hole; 340, spring; 350, connecting plate; 351, inclined portion; 352, buffer block. Detailed Embodiment

[0032] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] As Figures 1 - 3 shown, this embodiment provides a PCB board processing clamping fixture, including:

[0035] Workbench 100;

[0036] A driving mechanism 200, configured inside the workbench 100;

[0037] A fixing mechanism 300, configured on the upper surface of the workbench 100;

[0038] Among them, the fixing mechanism 300 includes:

[0039] A first L-shaped plate 310, configured on the upper surface of the workbench 100, and the first L-shaped plate 310 is fixedly connected to the corner of the workbench 100;

[0040] A second L-shaped plate 320, slidably configured on the upper surface of the workbench 100, and the notch of the second L-shaped plate 320 is diagonally arranged with the notch of the first L-shaped plate 310;

[0041] A fixing hole 330, opened on the side of the second L-shaped plate 320 close to the first L-shaped plate 310;

[0042] A spring 340, one end of which is fixedly connected to the bottom surface of the fixing hole 330;

[0043] A connecting plate 350, configured at the other end of the spring 340.

[0044] In this technical solution, in order to make the device adapt to the clamping of PCB boards with different length-width ratios, a first L-shaped plate 310 is fixedly arranged at a corner of the workbench 100. The two plates of the first L-shaped plate 310 are attached to the two side plates of the workbench 100. A slidable second L-shaped plate 320 is arranged at the diagonal of the first L-shaped plate 310. The notch of the second L-shaped plate 320 faces the notch of the first L-shaped plate 310. At the same time, a plurality of fixing holes 330 are opened on the two side plates of the second L-shaped plate 320. One end of a spring 340 is fixedly connected inside each fixing hole 330, and the other end of the spring 340 is fixedly connected to a connecting plate 350. By changing the position of the second L-shaped plate 320, a square fixing area can be formed between the second L-shaped plate 320 and the first L-shaped plate 310. By changing the positions of the two connecting plates 350 on the second L-shaped plate 320 through the spring 340, a fixing area with any length-width ratio can be formed between the two connecting plates 350 and the first L-shaped plate 310. Therefore, PCB boards with different length-width ratios can be fixed.

[0045] This embodiment provides a PCB board processing clamping fixture. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0046] As Figures 1 - 3 shown, in this embodiment, the driving mechanism 200 includes:

[0047] A sliding groove 210 is opened on the upper surface of the workbench 100;

[0048] A threaded rod 220 is arranged inside the sliding groove 210;

[0049] A motor 230 is arranged outside the workbench 100, and the output shaft of the motor 230 penetrates the workbench 100 and is fixedly connected to one end of the threaded rod 220;

[0050] A sliding block 240 is sleeved on the threaded rod 220, and the upper surface of the sliding block 240 is fixedly connected to the lower surface of the second L-shaped plate 320.

[0051] In this technical solution, in order to facilitate changing the position of the second L-shaped plate 320, a driving mechanism 200 is provided to drive the second L-shaped plate 320 to change its position. The sliding groove 210 of the driving mechanism 200 is opened through the upper surface of the workbench 100. A threaded rod 220 is arranged inside the sliding groove 210. A sliding block 240 is sleeved on the threaded rod 220. The upper surface of the sliding block 240 is flush with the upper surface of the workbench 100 and the upper surface and the lower surface of the sliding block 240 are fixedly connected. One end of the threaded rod 220 is fixedly connected to the output shaft of a motor 230. The motor 230 is fixedly installed outside the workbench 100. By rotating the motor 230, the threaded rod 220 rotates by itself, thereby driving the sliding block 240 to change its position along the direction of the threaded rod 220, so as to be able to change the position of the second L-shaped plate 320. Finally, it can be changed to a position suitable for the size of the PCB board, thus realizing the automation of the clamping fixture. At the same time, in order to make the motor 230 stop working when the connecting plate 350 touches the edge of the PCB board, a pressure sensor or an infrared sensor can be embedded on the two connecting plates 350. When the sensors on the two connecting plates 350 both detect the edge of the PCB board, the motor 230 is controlled to rotate, thereby realizing the rapid fixation of the PCB board.

[0052] This embodiment provides a clamping fixture for PCB board processing. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0053] As Figures 1 - 3 shown, in this embodiment, the sliding groove 210 is opened along the diagonal direction of the first L-shaped plate 310 and the second L-shaped plate 320.

[0054] In this technical solution, in order to enable the second L-shaped plate 320 to quickly form a fixed area with the first L-shaped plate 310 when changing its position, the sliding groove 210 is opened along the diagonal position of the first L-shaped plate 310. In this way, the sliding block 240 can slide along the diagonal position of the first L-shaped plate 310, so as to facilitate driving the second L-shaped plate 320 to approach the first L-shaped plate 310, thereby quickly fixing the PCB board.

[0055] This embodiment provides a clamping fixture for PCB board processing. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0056] As Figures 1 - 3 shown, in this embodiment, an inclined portion 351 is provided on one side of the connecting plate 350 close to the first L-shaped plate 310, and the inclined portion 351 makes the cross-section of the connecting plate 350 wider at the top and narrower at the bottom.

[0057] In this technical solution, in order to prevent the PCB board from changing its vertical position after being fixed by the first L-shaped plate 310 and the second L-shaped plate 320, an inclined portion 351 is fixedly provided on one side of the connecting plate 350 close to the first L-shaped plate 310. After adding the inclined portion 351, the cross-section of the connecting plate 350 is wider at the top and narrower at the bottom. In this way, the PCB board is fixed on one side of the connecting plate 350 close to the workbench 100, and the side of the connecting plate 350 away from the workbench 100 fixes the PCB board below, so that the PCB board can be fixed in two vertical directions.

[0058] This embodiment provides a PCB board processing clamping fixture. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0059] As Figures 1 - 3 shown, in this embodiment, a buffer block 352 is provided on one side of the inclined portion 351 close to the first L-shaped plate 310.

[0060] In this technical solution, in order to reduce the damage to the PCB board when it is fixed, a buffer block 352 is provided on one side of the inclined portion 351 close to the first L-shaped plate 310. In this way, when the PCB board is fixed between the connecting plate 350 and the first L-shaped plate 310, it can be protected by the buffer block 352, thereby reducing the pressure exerted by the connecting plate 350 on the PCB board, and thus better protecting the PCB board.

[0061] This embodiment provides a PCB board processing clamping fixture. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0062] As shown in Figure 1- Figure 3 shown, in this embodiment, a corner of the workbench 100 away from the first L-shaped plate 310 is cut off to form a flat surface 110.

[0063] In this technical solution, in order to facilitate the fixation of the motor 230, a corner of the workbench 100 opposite to the first L-shaped plate 310 is cut off. In this way, a flat surface 110 can be obtained along the direction of the threaded rod 220 on the workbench 100, and it is convenient to fix the motor 230 on the flat surface 110.

[0064] This embodiment provides a PCB board processing clamping fixture. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0065] As Figures 1 - 3 shown, in this embodiment, a receiving plate 120 is fixedly provided on the flat surface 110, and the motor 230 is fixed on the receiving plate 120.

[0066] In this technical solution, in order to provide a supporting force for the motor 230, a receiving plate 120 is fixedly arranged on the flat surface 110, and the motor 230 is fixedly arranged on the receiving plate 120, so that the fixing of the motor 230 can be facilitated, and thus the motor 230 can provide a stable output.

[0067] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A PCB board processing clamping fixture, characterized in that, Including: Workbench (100); Drive mechanism (200), configured inside the workbench (100); Fixing mechanism (300), disposed on the upper surface of the workbench (100); Wherein, the fixing mechanism (300) includes: First L-shaped plate (310), disposed on the upper surface of the workbench (100), and the first L-shaped plate (310) is fixedly connected to the corner of the workbench (100); Second L-shaped plate (320), slidably disposed on the upper surface of the workbench (100), and the notch of the second L-shaped plate (320) is diagonally arranged with the notch of the first L-shaped plate (310); Fixing hole (330), opened on the side of the second L-shaped plate (320) close to the first L-shaped plate (310); Spring (340), one end fixedly connected to the bottom surface of the fixing hole (330); Connecting plate (350), disposed at the other end of the spring (340).

2. The PCB board processing clamping fixture according to claim 1, characterized in that: The drive mechanism (200) includes: Sliding groove (210), opened on the upper surface of the workbench (100); Threaded rod (220), disposed inside the sliding groove (210); Motor (230), disposed outside the workbench (100), and the output shaft of the motor (230) penetrates the workbench (100) and is fixedly connected to one end of the threaded rod (220); Slider (240), sleeved on the threaded rod (220), and the upper surface of the slider (240) is fixedly connected to the lower surface of the second L-shaped plate (320).

3. The PCB board processing and clamping fixture according to claim 2, wherein: The sliding groove (210) is opened along the diagonal direction of the first L-shaped plate (310) and the second L-shaped plate (320).

4. A PCB board processing clamping fixture according to claim 1, characterized in that: On the side of the connecting plate (350) close to the first L-shaped plate (310), there is an inclined portion (351), and the inclined portion (351) makes the cross-section of the connecting plate (350) wider at the top and narrower at the bottom.

5. The PCB board processing clamping fixture according to claim 4, characterized in that: On the side of the inclined portion (351) close to the first L-shaped plate (310), there is a buffer block (352).

6. The clamping fixture for PCB board processing according to claim 2, wherein: The corner of the workbench (100) far from the first L-shaped plate (310) is cut off to form a flat surface (110).

7. A PCB board processing clamping fixture according to claim 6, characterized in that: A receiving plate (120) is fixedly arranged on the flat surface (110), and the motor (230) is fixed on the receiving plate (120).

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