PCB positioning device for tin brushing

Abstract

The utility model discloses a PCB (printed circuit board) positioning device for tin brushing, which comprises a positioning plate, positioning blocks are arranged at four end corners of the upper end of the positioning plate, the upper ends of the four positioning blocks are matched with a PCB, supporting frames are fixedly connected to four end corners of the lower end of the positioning plate, and extension springs are connected to the bottom ends in the supporting frames. The upper end of the extension spring is connected with the bottom end of a positioning block, a sleeve block is connected to the middle of the bottom end of the positioning block, and elastic clamping strips are connected to the two sides of the upper end of the positioning plate. The periphery of the lower end of the positioning block extrudes the whole extension spring, the sleeve block at the lower end of the positioning block is sleeved with the extension spring, the stability performance of the positioning block and the sleeve block at the upper end of the extension spring is improved, in the process that the PCB at the upper end of the positioning block moves downwards, the two sides of the PCB are connected between the two elastic clamping strips in a clamped mode, and therefore the stability of the PCB is improved. The arrangement and operation can fix a PCB without a through hole.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board positioning devices for tin brushing, in particular to a PCB board positioning device for tin brushing. Background Art

[0002] PCB generally refers to a circuit board. The circuit is printed on the circuit board through a circuit printing process. In the circuit printing process, a tin brushing operation needs to be performed on the PCB board. Before the tin brushing operation, the entire circuit board needs to be fixed. In the existing positioning technology, a positioning column is fixedly connected to the positioning device. When the positioning column is inserted into the through hole on the circuit board, the entire circuit board will be directly fixed on the device, thereby realizing the positioning of the circuit board;

[0003] This method results in the positioning device being able to only position a specific circuit board with through holes. When the device is used for some circuit boards without through holes or with offset through holes, the positioning effect of these positioning devices on different types of circuit boards is poor. Therefore, in order to solve the above problems, we propose a PCB board positioning device for tin brushing. Utility Model Content

[0004] The purpose of the utility model is to provide a PCB board positioning device for tin brushing, so as to solve the problems that the positioning devices proposed in the above background technology can only position a specific circuit board with through holes, and when the device is used for some circuit boards without through holes or the through holes are located in a biased position, the positioning effect of these positioning devices on different types of circuit boards is poor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PCB board positioning device for tin brushing, comprising a positioning plate, positioning blocks are provided at the four end corners of the upper end of the positioning plate, the upper ends of the four positioning blocks are matched with a PCB board, the four end corners of the lower end of the positioning plate are fixedly connected to a support frame, the bottom end of the support frame is connected to a tension spring, the upper end of the tension spring is connected to the bottom end of the positioning block, the middle of the bottom end of the positioning block is connected to a sleeve, and both sides of the upper end of the positioning plate are connected to elastic clips.

[0006] Preferably, through holes are penetrated on both upper and lower sides of the four end corners of the positioning plate, and positioning blocks are movably fitted in the through holes.

[0007] Preferably, an outer circular groove is fixedly provided around the upper end of the through hole.

[0008] Preferably, both sides of the through hole are connected with snap-on spring pieces, and both sides of the surface of the positioning block are provided with snap-on grooves, and the snap-on spring pieces are snap-on in the snap-on grooves.

[0009] Preferably, the cross-sectional surface of the engaging spring piece is set to a trapezoidal structure, and the cross-sectional surface of the engaging groove is set to a trapezoidal structure.

[0010] Preferably, pulling grooves are provided on both sides of the positioning block, and the pulling grooves are located on the upper side of the clamping slot.

[0011] Preferably, the distance between the pulling groove and the clamping groove is the same as the distance between the outer circular groove and the clamping elastic piece.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model places the whole PCB board on the upper ends of four positioning blocks, so that the four positioning blocks are pressed downward by the PCB board, and the positioning blocks move downward along the through holes. At this time, the card slots on both sides of the positioning blocks move downward so that the card springs on both sides of the through holes are carded in the card slots, and the upper end surface of the positioning block and the upper end surface of the positioning plate are level. In the process of the positioning block moving downward, the surrounding of the lower end of the positioning block presses the whole extension spring, and the sleeve at the lower end of the positioning block is quickly sleeved in the extension spring, which improves the stability of the positioning block and the sleeve at the upper end of the extension spring. In the process of the PCB board at the upper end of the positioning block moving downward, the two sides of the PCB board are carded between the two elastic card strips. Through this arrangement, the whole PCB board is positioned at the upper end of the positioning plate. The above arrangement and operation can fix the PCB board without through holes.

[0014] 2. The utility model can be mounted on the positioning block through the through hole on the PCB board, and the four positioning blocks are inserted to position the entire PCB board, and the extension spring supports the upper positioning block upward, so that the positioning block is always kept on the upper side of the through hole without being affected by pressure. Through this arrangement, the overall four positioning blocks can position the PCB board with the through hole. After the overall PCB board is positioned, the staff can brush tin on the surface of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 A top view of the utility model as a whole;

[0017] Figure 3 It is a front view cutaway view of the utility model as a whole;

[0018] Figure 4 For this utility model Figure 3 Enlarged section view of point A in the middle.

[0019] In the figure: 1. positioning plate; 2. PCB board; 3. positioning block; 4. support frame; 5. extension spring; 6. pulling groove; 7. outer circular groove; 8. sleeve; 9. through hole; 10. snap-on spring; 11. slot; 12. elastic clip. 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] See also Figures 1 to 4 The utility model provides an embodiment: a PCB board positioning device for brushing tin, comprising a positioning plate 1, positioning blocks 3 are provided at the four end corners of the upper end of the positioning plate 1, the upper ends of the four positioning blocks 3 are matched with a PCB board 2, the four end corners of the lower end of the positioning plate 1 are fixedly connected with a support frame 4, the bottom end of the support frame 4 is connected with a tension spring 5, the upper end of the tension spring 5 is connected to the bottom end of the positioning block 3, the middle of the bottom end of the positioning block 3 is connected with a sleeve 8, both sides of the upper end of the positioning plate 1 are connected with elastic clips 12, the elasticity of the two elastic clips 12 can limit the overall PCB board 2, wherein the elasticity of the elastic clip 12 is greater than the elasticity of the tension spring 5, so that the elasticity of the two elastic clips 12 as a whole can be clamped and fixed to the overall PCB board 2.

[0022] Through holes 9 are penetrated on both the upper and lower sides of the four end corners of the positioning plate 1, and a positioning block 3 is movably fitted in the through hole 9. An outer circular groove 7 is fixedly provided around the upper end of the through hole 9. Both sides of the inside of the through hole 9 are connected with snap-on spring pieces 10. Both sides of the surface of the positioning block 3 are provided with snap-on grooves 11, and the snap-on spring pieces 10 are snap-on in the snap-on grooves 11, which allows the positioning block 3 to be retracted into the through hole 9.

[0023] When in use, first place the whole PCB board 2 on the upper ends of the four positioning blocks 3, so that the four positioning blocks 3 are pressed downward by the PCB board 2, and the positioning blocks 3 move downward along the through holes 9. At this time, the card slots 11 on both sides of the positioning blocks 3 move downward so that the card springs 10 on both sides of the through holes 9 are carded in the card slots 11, and the upper end surface of the positioning blocks 3 and the upper end surface of the positioning plate 1 are level. In the process of the positioning block 3 moving downward, the surrounding of the lower end of the positioning block 3 squeezes the whole extension spring 5, and the sleeve 8 at the lower end of the positioning block 3 is sleeved in the extension spring 5, which improves the stability of the positioning block 3 and the sleeve 8 at the upper end of the extension spring 5. In the process of the PCB board 2 at the upper end of the positioning block 3 moving downward, the two sides of the PCB board 2 are carded between the two elastic card strips 12. Through this arrangement, the whole PCB board 2 is positioned at the upper end of the positioning plate 1. The above arrangement and operation can fix the PCB board 2 without through holes.

[0024] If a through hole is provided at the upper end of the PCB board 2, the through hole on the PCB board 2 can be mounted on the positioning block 3, and the four positioning blocks 3 are inserted to position the entire PCB board 2, and the extension spring 5 supports the upper positioning block 3 upward, so that the positioning block 3 is always maintained on the upper side of the through hole 9 without being affected by pressure. Through this arrangement, the four positioning blocks 3 as a whole can position the PCB board 2 with the through hole. After the entire PCB board 2 is positioned, the staff can brush tin on the surface of the PCB board 2.

[0025] The cross-sectional surface of the snap-on spring piece 10 is set to a trapezoidal structure, the cross-sectional surface of the slot 11 is set to a trapezoidal structure, and the snap-on spring piece 10 is made of an elastic metal material, so that the overall snap-on spring piece 10 can be snapped into the slot 11, so that the pulling slot 6 is limited and fixed in the through hole 9, and at the same time, pulling slots 6 are provided on both sides of the positioning block 3, and the pulling slot 6 is located on the upper side of the slot 11, and the distance between the pulling slot 6 and the slot 11 is the same as the distance between the outer circular groove 7 and the snap-on spring piece 10. If the positioning block 3 is snapped into the through hole 9, the user can detent the positioning block 3 on the pulling slot 6, and the overall positioning block 3 is pulled upward, so that the overall positioning block 3 can be detached from the through hole 9, so that the positioning block 3 is located on the upper side of the positioning plate 1, thereby preparing to limit the PCB board 2.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A PCB board positioning device for brushing tin, comprising a positioning plate (1), characterized in that: The four end corners of the upper end of the positioning plate (1) are provided with positioning blocks (3), the upper ends of the four positioning blocks (3) are matched with PCB boards (2), the four end corners of the lower end of the positioning plate (1) are fixedly connected with support frames (4), the bottom end of the support frame (4) is connected with a tension spring (5), the upper end of the tension spring (5) is connected to the bottom end of the positioning block (3), the middle of the bottom end of the positioning block (3) is connected with a sleeve (8), and both sides of the upper end of the positioning plate (1) are connected with elastic clips (12).

2. A PCB board positioning device for brushing tin according to claim 1, characterized in that: Through holes (9) are provided on both upper and lower sides of the four end corners of the positioning plate (1), and positioning blocks (3) are movably fitted in the through holes (9).

3. A PCB board positioning device for brushing tin according to claim 2, characterized in that: An outer circular groove (7) is fixedly provided around the upper end of the through hole (9).

4. A PCB board positioning device for brushing tin according to claim 3, characterized in that: Both sides of the through hole (9) are connected with snap-on spring pieces (10), and both sides of the surface of the positioning block (3) are provided with snap-on grooves (11), and the snap-on spring pieces (10) are snap-on in the snap-on grooves (11).

5. A PCB board positioning device for brushing tin according to claim 4, characterized in that: The cross-sectional surface of the engaging spring sheet (10) is set to a trapezoidal structure, and the cross-sectional surface of the engaging groove (11) is set to a trapezoidal structure.

6. A PCB board positioning device for brushing tin according to claim 5, characterized in that: Pulling grooves (6) are provided on both sides of the positioning block (3), and the pulling grooves (6) are located on the upper side of the clamping groove (11).

7. A PCB board positioning device for brushing tin according to claim 6, characterized in that: The distance between the pulling groove (6) and the clamping groove (11) is the same as the distance between the outer circular groove (7) and the clamping elastic sheet (10).

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