Printed circuit board positioning fixture

Abstract

The utility model discloses a printed circuit board positioning fixture, including a workbench, wherein the bottom end of the workbench and near the four corners are fixedly connected with support columns, the bottom ends of the four support columns are fixedly connected with adjustment boxes, the top ends of the workbench and the adjustment box are penetrated and opened with four adjustment through holes at the same position, four driven rods are slidably connected inside the eight adjustment through holes, and the top ends of the four driven rods are fixedly connected with positioning blocks. The utility model drives the adjustment gear to rotate by rotating the rotating shaft, so that the adjustment column moves under the drive of the adjustment gear, and in the process of the movement of the adjustment column, the connecting rod position is driven to change, thereby pushing or pulling the driven rod to slide in the adjustment through hole, so that the positioning block contracts or expands, so as to realize the positioning of square printed circuit boards of different sizes, and has a simple structure, convenient adjustment, and high practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of printed board production, in particular to a printed circuit board positioning fixture. Background Art

[0002] Printed circuit boards, also known as PCBs, are electronic components that use organic materials or inorganic substrates to wire, embed or mount components to achieve electrical connections and functions. They are widely used in various electronic devices, such as consumer electronics such as mobile phones, tablets, and televisions, as well as communications, automobiles, industrial control, and medical industries. During the production and processing of printed circuit boards, positioning fixtures are usually required for positioning and fixing to ensure processing accuracy.

[0003] Most of the current positioning jigs for square printed circuit boards usually only serve circuit boards of one size. When circuit boards of different sizes need to be processed, they need to be re-customized, which makes the positioning jig less practical. Utility Model Content

[0004] The purpose of the utility model is to provide a printed circuit board positioning fixture to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printed circuit board positioning fixture, comprising a workbench, the bottom end of the workbench and near the four corners are fixedly connected with support columns, the bottom ends of the four support columns are fixedly connected with an adjustment box, the top of the workbench and the adjusting box are both penetrated by four adjustment through holes located at the same position, four follower rods are slidably connected inside the eight adjustment through holes, the tops of the four follower rods are fixedly connected with positioning blocks, an adjustment column is penetrated at the top of the workbench and at the center position, eight connecting rods are rotatably connected to the outer surface of the adjusting column, the other ends of the eight connecting rods are respectively rotatably connected to one side of the four follower rods, an adjusting gear is meshed on the outer surface of the adjusting column, a rotating shaft is fixedly connected inside the adjusting gear, and the outer surface of the rotating shaft is rotatably connected to the inside of the adjusting box.

[0006] As a further preferred embodiment of the present technical solution, one end of the rotating shaft passes through a side wall inside the adjusting box and is fixedly connected to a polygonal limiting rod, an adjusting sleeve is movably sleeved on the outer surface of the polygonal limiting rod, a fixing seat is fixedly connected to one side of the adjusting box and located at the position of the rotating shaft, one end of the adjusting sleeve is plugged into the inside of the fixing seat, and one end of the polygonal limiting rod is fixedly connected to a limiting plate.

[0007] As a further preferred embodiment of the technical solution, a top material through hole is opened at the top and center of the workbench, a top block is slidably connected inside the top material through hole, a cylinder is fixedly connected at the bottom of the workbench and located at the position of the top material through hole, and the telescopic end of the cylinder is fixedly connected to the bottom end of the top block.

[0008] As a further preferred embodiment of the present technical solution, a receiving groove is provided at the top end of the adjusting column, and the interior of the receiving groove is plugged into the outer surface of the cylinder.

[0009] As a further preferred embodiment of the present technical solution, the bottom ends of the four driven rods are fixedly connected with limiting plates, and the outer surfaces of the four limiting plates are in contact with the inner top surface of the regulating box.

[0010] As a further preferred embodiment of the technical solution, two positioning plates are fixedly connected to the inner bottom surface of the adjustment box, two positioning grooves are provided on the outer surface of the adjustment column, and one side of the two positioning plates is slidably connected to the inside of the two positioning grooves respectively.

[0011] As a further preferred embodiment of the technical solution, a limiting ring is fixedly connected to the outer surface of the adjusting column, and one side of each of the four positioning blocks is fixedly connected to an elastic pad.

[0012] The utility model provides a printed circuit board positioning fixture, which has the following beneficial effects:

[0013] (1) The utility model drives the adjusting gear to rotate by rotating the rotating shaft, so that the adjusting column moves under the drive of the adjusting gear. During the movement of the adjusting column, the position of the connecting rod is changed, thereby pushing or pulling the driven rod to slide in the adjusting through hole, so that the positioning block contracts or expands, thereby realizing the positioning of square printed circuit boards of different sizes. The utility model has a simple structure, convenient adjustment and high practicality.

[0014] (2) The utility model enables the adjustment sleeve to slide along the outer surface of the polygonal limit rod so that one end of the adjustment sleeve is inserted into the interior of the fixed seat, thereby achieving fixation to the rotation axis, making the positioning block more stable after the adjustment is completed, thereby improving the accuracy of the positioning fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure between the adjusting column and the driven rod of the utility model;

[0018] Figure 4It is an exploded schematic diagram of the structure between the fixing seat and the polygonal limiting rod of the utility model.

[0019] In the figure: 1. workbench; 2. support column; 3. adjustment box; 4. adjustment hole; 5. driven rod; 6. positioning block; 7. elastic pad; 8. adjustment column; 9. connecting rod; 10. ejector hole; 11. ejector block; 12. cylinder; 13. adjustment gear; 14. rotating shaft; 15. positioning plate; 16. positioning groove; 17. limiting plate; 18. storage groove; 19. polygonal limiting rod; 20. adjusting sleeve; 21. fixing seat; 22. limiting plate; 23. limiting ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1-3 As shown, in this embodiment, a printed circuit board positioning fixture includes a workbench 1, a support column 2 is fixedly connected to the bottom end of the workbench 1 and near the four corners, an adjustment box 3 is fixedly connected to the bottom ends of the four support columns 2, four adjustment through holes 4 are penetrated and opened at the top and the same position of the workbench 1 and the adjustment box 3, four follower rods 5 are slidably connected inside the eight adjustment through holes 4, and the tops of the four follower rods 5 are fixedly connected to positioning blocks 6, an adjustment column 8 is penetrated at the top and in the center of the workbench 1, and eight connecting rods 9 are rotatably connected to the outer surface of the adjustment column 8, and the eight connecting rods 9 are also One end is rotatably connected to one side of four driven rods 5 respectively, an adjusting gear 13 is meshed on the outer surface of the adjusting column 8, a rotating shaft 14 is fixedly connected inside the adjusting gear 13, and the outer surface of the rotating shaft 14 is rotatably connected to the inside of the adjusting box 3, wherein, by setting the adjusting through hole 4, the moving direction of the driven rod 5 can be guided, and by setting the connecting rod 9, the driven rod 5 can be pushed or pulled to move during the movement of the adjusting column 8, thereby realizing the positioning of square printed circuit boards of different sizes, and by setting the adjusting gear 13, the adjusting column 8 can be driven to move up and down to achieve the adjustment effect.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, one end of the rotating shaft 14 passes through one side wall of the inner part of the adjusting box 3 and is fixedly connected with a polygonal limiting rod 19, and an adjusting sleeve 20 is movably sleeved on the outer surface of the polygonal limiting rod 19. A fixing seat 21 is fixedly connected to one side of the adjusting box 3 and located at the position of the rotating shaft 14. One end of the adjusting sleeve 20 is plugged into the inside of the fixing seat 21, and one end of the polygonal limiting rod 19 is fixedly connected to a limiting plate 22. By setting the polygonal limiting rod 19, the rotating shaft 14 can be fixed by the cooperation of the adjusting sleeve 20 and the fixing seat 21, so that the positioning block 6 is more stable after the adjustment is completed, thereby improving the positioning effect.

[0023] like Figure 1 and Figure 2 As shown, a material ejection hole 10 is provided at the top and at the center of the workbench 1, a ejection block 11 is slidably connected inside the material ejection hole 10, a cylinder 12 is fixedly connected at the bottom of the workbench 1 and at the position of the material ejection hole 10, and the telescopic end of the cylinder 12 is fixedly connected to the bottom end of the ejection block 11. By setting the cylinder 12, the ejection block 11 can be pushed out of the material ejection hole 10, thereby realizing the ejection of materials and facilitating material removal.

[0024] like Figure 3 As shown, a receiving groove 18 is provided at the top of the adjusting column 8, and the inside of the receiving groove 18 is plugged into the outer surface of the cylinder 12, which can prevent the adjusting column 8 from colliding with the cylinder 12 during the adjustment process, thereby improving safety.

[0025] like Figure 2 and Figure 3 As shown, the bottom ends of the four driven rods 5 are fixedly connected with limiting plates 17, and the outer surfaces of the four limiting plates 17 are in contact with the inner top surface of the adjustment box 3. By setting the limiting plates 17, the driven rods 5 can be prevented from being skewed during movement, thereby improving stability.

[0026] like Figure 2 and Figure 3 As shown, two positioning plates 15 are fixedly connected to the inner bottom surface of the adjustment box 3, and two positioning grooves 16 are provided on the outer surface of the adjustment column 8. One side of the two positioning plates 15 is slidably connected to the inside of the two positioning grooves 16 respectively. By setting the positioning plates 15 and the positioning grooves 16, the adjustment column 8 can be positioned to prevent it from being skewed.

[0027] like Figure 3 As shown, a limiting ring 23 is fixedly connected to the outer surface of the adjusting column 8, and an elastic pad 7 is fixedly connected to one side of each of the four positioning blocks 6. By setting the limiting ring 23, the movable range of the adjusting column 8 can be limited to avoid damage to the connecting rod 9 and other structures due to excessive movement.

[0028] The utility model provides a printed circuit board positioning fixture, and the specific working principle is as follows:

[0029] When it is necessary to position square printed circuit boards of different sizes, the staff first places the square printed circuit board to be positioned at the center position of the workbench 1, then pulls the adjusting sleeve 20 out of the fixing seat 21 to release the restriction on the rotating shaft 14, rotates the rotating shaft 14 to drive the adjusting gear 13 to rotate, so that the adjusting column 8 moves under the drive of the adjusting gear 13, and in the process of the movement of the adjusting column 8, the position of the connecting rod 9 is driven to change, thereby pushing or pulling the driven rod 5 to slide in the adjusting through hole 4, so that the positioning block 6 contracts and contacts the four sides of the printed board on the workbench 1, and when the printed board does not shake, the adjusting sleeve 20 is slid along the outer surface of the polygonal limiting rod 19, so that one end of the adjusting sleeve 20 is inserted into the fixing seat 21, the rotating shaft 14 is fixed, and the adjustment of the positioning block 6 is completed, and then the printed board only needs to be placed between the four positioning blocks 6 for positioning.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printed circuit board positioning fixture, comprising a workbench (1), characterized in that: The bottom end of the workbench (1) and near the four corners are fixedly connected with support columns (2), and the bottom ends of the four support columns (2) are fixedly connected with adjustment boxes (3). The top ends of the workbench (1) and the adjustment box (3) are both provided with four adjustment through holes (4) at the same position. Four driven rods (5) are slidably connected inside the eight adjustment through holes (4), and the top ends of the four driven rods (5) are fixedly connected with positioning blocks (6). An adjustment column (8) is provided at the top end of the workbench (1) and at the center position. The outer surface of the adjustment column (8) is rotatably connected with eight connecting rods (9), and the other ends of the eight connecting rods (9) are rotatably connected with one side of the four driven rods (5). The outer surface of the adjustment column (8) is meshed with an adjustment gear (13), and a rotating shaft (14) is fixedly connected inside the adjusting gear (13), and the outer surface of the rotating shaft (14) is rotatably connected with the inside of the adjustment box (3).

2. A printed circuit board positioning fixture according to claim 1, characterized in that: One end of the rotating shaft (14) passes through a side wall of the inside of the adjusting box (3) and is fixedly connected to a polygonal limiting rod (19); an adjusting sleeve (20) is movably sleeved on the outer surface of the polygonal limiting rod (19); a fixing seat (21) is fixedly connected to one side of the adjusting box (3) and located at the position of the rotating shaft (14); one end of the adjusting sleeve (20) is plugged into the inside of the fixing seat (21); and one end of the polygonal limiting rod (19) is fixedly connected to a limiting plate (22).

3. A printed circuit board positioning fixture according to claim 1, characterized in that: A material ejection through hole (10) is provided at the top and at the center of the workbench (1), a ejection block (11) is slidably connected inside the material ejection through hole (10), a cylinder (12) is fixedly connected at the bottom of the workbench (1) and at the position of the material ejection through hole (10), and a telescopic end of the cylinder (12) is fixedly connected to the bottom end of the ejection block (11).

4. A printed circuit board positioning fixture according to claim 3, characterized in that: A receiving groove (18) is provided at the top end of the adjusting column (8), and the interior of the receiving groove (18) is plugged into the outer surface of the cylinder (12).

5. A printed circuit board positioning fixture according to claim 4, characterized in that: The bottom ends of the four driven rods (5) are all fixedly connected with a limiting plate (17), and the outer surfaces of the four limiting plates (17) are in contact with the inner top surface of the regulating box (3).

6. A printed circuit board positioning fixture according to claim 1, characterized in that: Two positioning plates (15) are fixedly connected to the inner bottom surface of the adjustment box (3), and two positioning grooves (16) are provided on the outer surface of the adjustment column (8). One side of the two positioning plates (15) is slidably connected to the inside of the two positioning grooves (16) respectively.

7. A printed circuit board positioning fixture according to claim 6, characterized in that: A limiting ring (23) is fixedly connected to the outer surface of the adjusting column (8), and an elastic pad (7) is fixedly connected to one side of each of the four positioning blocks (6).

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