Electronic circuit board welding positioning tool

Abstract

The utility model discloses an electronic circuit board welding positioning tool which comprises a base, a first sliding hole is formed in the top end of the base, a second sliding hole is formed in the bottom end of the first sliding hole, a spline groove is formed in the inner wall of the upper portion of the second sliding hole, a spline shaft is arranged in the spline groove in a matched mode, a rotating shaft is connected to the spline shaft, and a tray is connected to the rotating shaft. The tray is provided with a fixed plate and an internal thread block, the internal thread block is in threaded connection with a screw, one end of the screw is connected with a hand wheel, the other end of the screw is rotatably provided with a movable plate, the movable plate and the fixed plate are parallel to each other, and notches are formed in the sides, close to each other, of the movable plate and the fixed plate. The movable plate is pushed to move towards the direction of the fixed plate by rotating the hand wheel screw, so that the circuit board is fixed in the notch, a positioning effect is provided for the circuit board, and the problem that an electric soldering iron pushes the circuit board to move when an electronic component is welded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board welding, in particular to a welding positioning tool for an electronic circuit board. Background Art

[0002] Circuit board generally refers to circuit board, which can be called printed circuit board or printed circuit board. Circuit board is composed of integrated circuit, quartz resonator, fine-tuning capacitor and printed circuit board. The names of circuit boards are: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, etc. Circuit board makes the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. In electronic equipment, it is mainly used to connect various electronic components and plays the role of structural support.

[0003] When soldering electronic components on a circuit board, the circuit board is usually placed directly on a work surface. During soldering, the electric soldering iron is easy to contact the circuit board, causing the position of the circuit board to shift, making soldering inconvenient. In addition, there are a large number of electronic components on the circuit board, and the operator needs to frequently change his welding angle during soldering, which is inconvenient. Therefore, an electronic circuit board soldering positioning tool is needed to meet people's needs. Summary of the invention

[0004] The utility model aims to provide a welding positioning tool for an electronic circuit board to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electronic circuit board welding positioning tool, comprising a base, a top end of the base is provided with a first sliding hole, a bottom end of the first sliding hole is provided with a second sliding hole, an upper inner wall of the second sliding hole is provided with a spline groove, a spline shaft is adapted in the spline groove, a rotating shaft is connected to the spline shaft, a tray is connected to the rotating shaft, a fixed plate and an internal thread block are respectively provided on the tray, the internal thread of the internal thread block is connected with a screw, one end of the screw is connected to a hand wheel, and a movable plate is rotatably installed on the other end of the screw, the movable plate and the fixed plate are parallel to each other, and a notch is provided on the side close to each other, the base is provided with a plurality of third sliding holes, and the plurality of third sliding holes are evenly distributed in a circular shape, a first spring is provided in each third sliding hole, a pin is provided on each first spring, and the plurality of pins are located below the tray.

[0006] Preferably, a T-shaped shaft is rotatably installed in one end of the movable plate, and one end of the screw rod is connected to the T-shaped shaft.

[0007] Preferably, a slide groove is provided on the tray, the slide groove is trapezoidal, a slider is adapted to slide in the slide groove, and the slider is connected to the bottom end of the movable plate.

[0008] Preferably, two spring slots are provided on the top of the fixed plate and the movable plate, a second spring is arranged in each spring slot, and the tops of the two second springs are connected to the same pressing plate, which is located above the slots.

[0009] Preferably, rubber pads are provided on both sides of the notch and on the bottom end of the pressing plate.

[0010] Preferably, a ball is rotatably mounted in the top end of the pin shaft, and the top end of the ball is in contact with the bottom end of the tray.

[0011] Preferably, a ball hole is opened on the top end of the pin shaft, the ball is located in the ball hole, and the hole diameter at the top opening of the ball hole is smaller than the diameter of the ball.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, the movable plate is pushed to move in the direction of the fixed plate by rotating the hand wheel screw, so that the circuit board is fixed in the slot, thereby providing a positioning effect for the circuit board, and preventing the problem of the electric soldering iron pushing the circuit board to move when soldering electronic components.

[0014] In the utility model, through the cooperation between the spline groove and the spline shaft, when the first spring is not compressed, the spline shaft is located in the spline groove, which effectively limits the rotation of the spline shaft, thereby preventing the tray from rotating and improving the stability of the circuit board after clamping and positioning. The tray is pressed so that the pin shaft pushes the first spring to compress, and the spline shaft is separated from the spline groove, thereby releasing the positioning restriction of the tray, allowing the tray to drive the positioned circuit board to rotate under the action of external force, thereby allowing the circuit board to freely adjust the placement angle according to the operator's needs during welding, making welding more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an electronic circuit board welding positioning tool proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of an electronic circuit board welding positioning tooling proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of a top-view cross-sectional structure of a spline shaft of an electronic circuit board welding positioning tooling proposed by the utility model;

[0018] Figure 4 The utility model provides a schematic diagram of the side cross-sectional structure of a second spring of an electronic circuit board welding positioning tool.

[0019] In the figure: 1. base; 2. first sliding hole; 3. second sliding hole; 4. spline groove; 5. spline shaft; 6. rotating shaft; 7. tray; 8. fixed plate; 9. internal thread block; 10. screw; 11. hand wheel; 12. movable plate; 13. notch; 14. third sliding hole; 15. first spring; 16. pin shaft; 17. T-shaft; 18. sliding groove; 19. slider; 20. spring groove; 21. second spring; 22. pressure plate; 23. rubber pad; 24. ball; 25. ball hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 , an electronic circuit board welding positioning tool, comprising a base 1, a first sliding hole 2 is opened on the top of the base 1, a second sliding hole 3 is opened on the bottom end of the first sliding hole 2, a spline groove 4 is opened on the upper inner wall of the second sliding hole 3, a spline shaft 5 is adapted to be arranged in the spline groove 4, a rotating shaft 6 is connected to the spline shaft 5, a tray 7 is connected to the rotating shaft 6, a fixed plate 8 and an internal thread block 9 are respectively arranged on the tray 7, a screw 10 is connected to the internal thread of the internal thread block 9, a hand wheel 11 is connected to one end of the screw 10, a movable plate 12 is rotatably installed on the other end of the screw 10, the movable plate 12 is parallel to the fixed plate 8, and a notch 13 is opened on the side close to each other, a plurality of third sliding holes 14 are opened on the base 1, and the plurality of third sliding holes 14 are evenly distributed in a circular shape, a first spring 15 is arranged in each third sliding hole 14, a pin 16 is arranged on each first spring 15, and the plurality of pins 16 are located below the tray 7.

[0022] Place the circuit board at the notch 13, turn the hand wheel 11, and the screw 10 pushes the movable plate 12 to move in the direction of the fixed plate 8, so that the circuit board is fixed in the notch 13. During the welding of electronic components, when it is necessary to change the horizontal angle of the circuit board, press the tray 7, the shaft 6 drives the spline shaft 5 to press down, and the spline shaft 5 moves from the spline groove 4 to the bottom of the second sliding hole 3, and the tray 7 drives the pin 16 to press down, and the first spring 15 is compressed. At this time, the tray 7 is rotated, the shaft 6 rotates in the first sliding hole 2, and the spline shaft 5 rotates in the second sliding hole 3. When the circuit board and the tray 7 are rotated to a suitable angle, release the tray 7, the first spring 15 rebounds, and the tray 7 is pushed upward via the pin 16, so that the spline shaft 5 slides into the spline groove 4 again to complete the locking.

[0023] Specifically, in this embodiment, a T-shaped shaft 17 is rotatably installed in one end of the movable plate 12, and one end of the screw rod 10 is connected to the T-shaped shaft 17, so that when the screw rod 10 rotates in the opposite direction, the movable plate 12 can be pulled back.

[0024] Specifically, in this embodiment, a slide groove 18 is provided on the tray 7, and the slide groove 18 is trapezoidal. A slider 19 is adapted to slide in the slide groove 18, and the slider 19 is connected to the bottom end of the movable plate 12 to ensure that the movable plate 12 is always parallel to the fixed plate 8 during the movement to prevent shaking.

[0025] Specifically, in the present embodiment, two spring grooves 20 are provided on the top of the fixed plate 8 and the movable plate 12, and a second spring 21 is provided in each spring groove 20. The tops of the two second springs 21 are connected to the same pressure plate 22, and the pressure plate 22 is located above the slot 13. The second springs 21 provide pressure for the circuit board, so that the circuit board can be positioned in the slot 13 more stably.

[0026] Specifically, in this embodiment, rubber pads 23 are provided on both sides of the notch 13 and on the bottom end of the pressing plate 22 to prevent the pressure between the pressing plate 22 and the notch 13 and the pressure between the moving plate 12 and the fixed plate 8 from damaging the circuit board.

[0027] Specifically, in this embodiment, a ball 24 is rotatably installed in the top end of the pin shaft 16, and the top end of the ball 24 contacts the bottom end of the tray 7, so that the tray 7 can rotate more smoothly in a pressed state.

[0028] Specifically, in this embodiment, a ball hole 25 is opened on the top of the pin shaft 16, and the ball 24 is located in the ball hole 25. The hole diameter at the top opening of the ball hole 25 is smaller than the diameter of the ball 24 to prevent the ball 24 from separating from the pin shaft 16.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An electronic circuit board welding positioning tool, comprising a base (1), characterized in that: The top end of the base (1) is provided with a first sliding hole (2), the bottom end of the first sliding hole (2) is provided with a second sliding hole (3), the upper inner wall of the second sliding hole (3) is provided with a spline groove (4), a spline shaft (5) is adapted in the spline groove (4), a rotating shaft (6) is connected to the spline shaft (5), a tray (7) is connected to the rotating shaft (6), a fixing plate (8) and an internal thread block (9) are respectively provided on the tray (7), the internal thread block (9) is internally threadedly connected to a screw rod (10), one end of the screw rod (10) is connected to a hand wheel ( 11), a movable plate (12) is rotatably mounted on the other end of the screw rod (10), the movable plate (12) and the fixed plate (8) are parallel to each other, and a notch (13) is provided on the side close to each other, the base (1) is provided with a plurality of third sliding holes (14), the plurality of third sliding holes (14) are evenly distributed in a circular shape, a first spring (15) is provided in each third sliding hole (14), a pin shaft (16) is provided on each first spring (15), and the plurality of pin shafts (16) are located below the tray (7).

2. The electronic circuit board welding positioning tool according to claim 1, characterized in that: A T-shaped shaft (17) is rotatably mounted inside one end of the movable plate (12), and one end of the screw rod (10) is connected to the T-shaped shaft (17).

3. The electronic circuit board welding positioning tool according to claim 1, characterized in that: The tray (7) is provided with a slide groove (18) which is trapezoidal in shape. A slider (19) is slidably adapted in the slide groove (18). The slider (19) is connected to the bottom end of the movable plate (12).

4. The electronic circuit board welding positioning tool according to claim 1, characterized in that: Two spring slots (20) are provided on the top of the fixed plate (8) and the movable plate (12), a second spring (21) is arranged in each spring slot (20), and the tops of the two second springs (21) are connected to the same pressing plate (22), which is located above the notch (13).

5. The electronic circuit board welding positioning tool according to claim 1, characterized in that: Rubber pads (23) are provided on both sides of the notch (13) and on the bottom end of the pressing plate (22).

6. The electronic circuit board welding positioning tool according to claim 1, characterized in that: A ball (24) is rotatably mounted in the top end of the pin shaft (16), and the top end of the ball (24) contacts the bottom end of the tray (7).

7. The electronic circuit board welding positioning tool according to claim 1, characterized in that: A ball hole (25) is provided on the top end of the pin shaft (16), and the ball (24) is located in the ball hole (25). The diameter of the top end opening of the ball hole (25) is smaller than the diameter of the ball (24).

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