PCB fixing tool
By designing adjustable limit bar gap and positioning pin structure in PCB board fixing tooling, the problems of limit slot size adjustment and limit structure deformation are solved, the sliding accuracy and force uniformity of the pushing block are improved, and the The fixing efficiency and processing accuracy of the PCB board are achieved.
Patent Information
- Application Number
- CN202323470685.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-18
AI Technical Summary
In the prior art, the limit groove size of the PCB board is difficult to adjust, which leads to difficulty in sliding the push block, and the limit structure size is small and easy to deform, affecting processing accuracy and efficiency.
Design a PCB board fixing tool to form a gap between the limit strip and the support structure, and cooperate with the limit structure of the pushing block, allowing the gap size to be adjusted by adding gaskets or reducing thickness, and using positioning pins and support pins to improve the limit Structural strength and installation efficiency.
It realizes flexible adjustment of limit slot size, improves the sliding accuracy and force uniformity of the pushing block, reduces processing difficulty and cost, and improves the fixing efficiency of the PCB board.
Smart Images
Figure CN222155248U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electronic component processing, in particular to a PCB board fixing tool. Background Art
[0002] When processing sheet-like electronic components such as PCB boards, they need to be clamped and fixed first to avoid displacement of sheet-like electronic components such as PCB boards during processing, which may lead to processing errors. Taking the wire bonding of PCB boards as an example, before the wire bonding of PCB boards, it is usually necessary to press the PCB board from the side through a slidable pushing block, and fix the PCB board by side pressing. Some pushing blocks will also have a structure that presses from the upper side. In order to prevent the pushing block from moving upward during operation, structures such as limit grooves can be set on both sides of the slide groove, and limit structures can be set on both sides of the pushing block respectively. The height of the limit structure is constrained by the limit groove, thereby constraining the height of the pushing block.
[0003] However, sheet-like electronic components such as PCB boards are very small in size. In order to avoid blocking the processing of the PCB board, the size of the push block is not large, and the size of the limiting structure set on the push block is even smaller. The smaller the size, the higher the demand for processing accuracy. When the top surface height of the limiting groove is used to limit the height position of the push block, inaccurate processing of the limiting groove may cause the push block to have difficulty sliding. When the above situation occurs, it is difficult to further process and adjust the limiting groove. Therefore, there is a problem in the prior art that it is difficult to adjust the size of the limiting groove. Utility Model Content
[0004] The utility model aims to provide a PCB board fixing tool, which is used to solve the problem that it is difficult to adjust the size of the limit groove that constrains the height of the push block in the prior art.
[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
[0006] A PCB board fixing tool comprises a base plate, on which a fixing unit is arranged, the fixing unit comprises two limit bars, a pushing block and a supporting structure, the limit bars are arranged in parallel, a slide groove is formed between the two limit bars, the pushing block is arranged in the slide groove, one end of the limit bar is connected to the base plate, the bottom surface of the other end of the limit bar abuts against the supporting structure, the bottom surface of the supporting structure abuts against the base plate, a gap is formed between the bottom surface of the limit bar and the base plate, a limit structure is arranged on the side of the pushing block, and the limit structure is within the gap.
[0007] In this scheme, two limiting strips are used to form a slide groove to accommodate the push block, and the sliding direction of the push block on the bottom plate is constrained by the slide groove. The limiting structure on the side of the push block is matched with the gap between the limiting strip and the bottom plate, so as to constrain the height position of the push block. Since one end of the limiting strip is against the support structure, and the bottom surface of the support structure is against the bottom plate. When the push block needs to be installed, the support structure can be removed, and the limiting structure of the push block can be inserted into the gap from one end of the gap, and then the support structure can be reinstalled. After the push block is installed, if the push block is difficult to slide, a gasket can be added between the limiting strip and the support structure to increase the size of the gap; if the height of the push block is too high, the thickness of the support structure can be reduced, or the thickness of the connection position between the limiting strip and the support structure can be reduced, so as to reduce the size of the gap and achieve the purpose of adjusting the size of the gap. Whether adding a gasket or reducing the thickness of the support structure or the limiting strip, the limiting strip can be made to swing up and down at a certain angle as a whole, so as to adjust the size of the gap. Furthermore, adding a gasket or reducing the thickness of the supporting structure or the limiting strip has the advantages of small processing amount and easy operation, making the size of the gap easier to adjust.
[0008] In order to solve the problem of uneven force on both sides of the pushing block, limiting structures are respectively provided on both sides of the pushing block.
[0009] In this solution, limiting structures are respectively provided on both sides of the pushing block, so that both sides of the pushing block can be limited by the limiting structures, so that the pushing block is subjected to more uniform force.
[0010] In order to solve the problem that the size pin of the limiting structure is easily deformed, the limiting structure is a positioning pin, and a positioning hole is provided on the pushing block, and the positioning pin is connected to the positioning hole.
[0011] In this solution, a positioning pin is used as a limiting structure, and the positioning pin has high strength and is not easily deformed. Moreover, even if the positioning pin is deformed, the positioning pin can be replaced, and the push block can continue to be used after the positioning pin is replaced.
[0012] Preferably, the positioning hole passes through the pushing block, and two ends of the positioning pin are respectively located on two sides of the pushing block, so that limiting structures are respectively formed on both sides of the pushing block.
[0013] In this solution, the positioning pin passes through the push block, and the two ends of the positioning pin form the limit structures on both sides of the push block. This arrangement can keep the height of the limit structures on both sides of the push block consistent, improve the height accuracy of the limit structures, speed up the installation efficiency, and complete the installation of the limit structures on both sides at one time.
[0014] Preferably, the supporting structure is a horizontally arranged columnar structure.
[0015] In this solution, the columnar structure can provide support for the two limit bars at the same time, and along the axial direction of the columnar structure, the cross-sectional area of the columnar structure is the same, which can provide support of the same height for the limit bars.
[0016] Preferably, the columnar structure is a cylindrical support pin.
[0017] In this solution, the support pin is used as the columnar structure for supporting the limit bar, and the pin shaft can be directly purchased on the market to reduce the cost. In addition, the cylindrical support pin has higher processing accuracy and lower processing cost than the prismatic structure.
[0018] In order to solve the problem that the supporting structure moves along the surface of the bottom plate, the bottom plate is provided with a positioning groove, and the supporting structure is arranged in the positioning groove.
[0019] In this solution, the positioning groove is provided to prevent the supporting structure from moving randomly, thereby ensuring the supporting effect of the supporting structure on the limiting strip.
[0020] Preferably, the fixing tool comprises at least two fixing units.
[0021] In this solution, the fixing fixture is provided with at least two fixing units, which can realize batch fixing of PCB boards, increase the number of PCB boards processed at one time, and improve the processing efficiency of PCB boards.
[0022] Preferably, the fixing units are distributed along a straight line, and the bottom surface of the limiting strip of each fixing unit abuts against the same supporting structure.
[0023] In this solution, a supporting structure is used to support each limit strip, which can reduce the complexity of installation, simplify the structure of the tooling, and reduce the cost of the tooling.
[0024] Preferably, the fixing units distributed along a straight line are regarded as one row, and at least two rows of fixing units are arranged on the bottom plate.
[0025] In this solution, at least two rows of fixing units are provided, so that the top surface area of the bottom plate can be fully utilized, the number of PCB boards that can be fixed is increased, and the processing efficiency of the PCB boards is improved.
[0026] The utility model has the following beneficial effects:
[0027] The utility model adopts a gap formed by a limiting strip and a bottom plate, and cooperates with the push block through the gap, thereby limiting the height position of the push block. One end of the limiting strip is supported by a supporting structure. When the gap size does not meet the requirements, the gap size can be adjusted by adding a gasket or reducing the thickness of the supporting structure or the limiting strip, so that the gap size meets the use requirements of the push block. The utility model has the advantages of small processing amount for adjusting the gap size and quick and convenient processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solution of the present utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0029] Figure 1 It is a schematic diagram of the structure of the utility model;
[0030] Figure 2 It is a top view of the utility model;
[0031] Figure 3 It is a right side view of the utility model;
[0032] Figure 4 It is a structural schematic diagram of the bottom plate of the utility model;
[0033] Figure 5 It is a structural schematic diagram of the push block;
[0034] Figure 6 A top view of the push block.
[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0036] 1. Bottom plate; 2. Push block; 3. Limit strip; 4. Gap; 5. Support pin; 6. Slide groove; 7. Positioning pin. DETAILED DESCRIPTION
[0037] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings through specific implementation methods of the embodiments of the present invention.
[0038] Embodiment 1
[0039] See also Figure 1As shown, the first embodiment of the present invention provides a PCB board fixing tool, including a bottom plate 1, on which at least one fixing unit is arranged. The fixing unit includes two limit bars 3, a push block 2 and a support structure, the two limit bars 3 are arranged in parallel, the two limit bars 3 and the bottom plate 1 form a slide groove 6 structure, the push block 2 is arranged in the slide groove 6, the width of the push block 2 is adapted to the width of the slide groove 6, the push block 2 can slide in the slide groove 6, and the sliding direction of the push block 2 is constrained by the slide groove 6. One end of the limit bar 3 is connected to the bottom plate 1, and there is a gap 4 between the bottom surface of the limit bar 3 and the bottom plate 1. A limit structure is arranged on the side of the push block 2, the limit structure is located in the gap 4, and the limit structure can slide along the length direction of the gap 4. The bottom surface of the other end of the limit bar 3 abuts against the top surface of the support structure, and the bottom surface of the support structure abuts against the bottom plate 1. Adding a gasket between the support structure and the limit bar 3 can make the limit bar 3 swing upward and increase the size of the gap 4. By grinding and reducing the thickness of the contact portion between the limit strip 3 and the support structure, or grinding and reducing the thickness of the support structure, the limit strip 3 can be swung downward to reduce the size of the gap 4. When the size of the gap 4 does not meet the working conditions of the push block 2, the size of the gap 4 can be changed to adapt to the working environment of the push block 2.
[0040] The support structure can be a columnar structure such as a prism or a cylinder. The columnar structure is placed horizontally between the limit strip 3 and the bottom plate 1, and the columnar structure can provide support for two limit strips 3 at the same time. Increasing the length of the columnar structure can enable the columnar structure to provide support for more limit strips 3.
[0041] The base plate 1 is provided with a positioning groove, which is used to constrain the position of the supporting structure to prevent the supporting structure from moving. The shape of the positioning groove is adapted to the shape of the supporting structure. For example, when the shape of the supporting structure is a quadrangular prism, the shape of the positioning groove is a rectangular groove; when the shape of the supporting structure is a cylinder, the shape of the positioning groove is an arc groove. The length direction of the positioning groove is perpendicular to the length direction of the slide groove 6, and the positioning groove runs through the two side surfaces of the base plate 1. When installing the supporting structure, insert the supporting structure from one end of the positioning groove, and slide along the length direction of the positioning groove to move the supporting structure to the lower side of the limit strip 3.
[0042] The support structure and the bottom plate 1 can be bonded by glue to improve stability. Similarly, the support structure and the limit strip 3 can also be bonded by glue to prevent the limit strip 3 from bending upward due to accidental collision by the staff.
[0043] The support structure preferably uses a cylindrical pin shaft as the support pin 5. The pin shaft is a common product on the market and can be obtained through purchase, thereby reducing production costs.
[0044] The limiting structures on both sides of the pushing block 2 may be formed integrally with the pushing block 2 , or may be detachably connected to the pushing block 2 .
[0045] The limiting structure preferably uses a positioning pin 7, which can also be purchased, which can reduce costs. In addition, since the limiting structure is very small, the positioning pin 7 can provide greater strength. The push block 2 is usually made of plastic, and the positioning pin 7 made of metal is less likely to deform. Even if the positioning pin 7 is deformed, it can be replaced, which can effectively reduce costs.
[0046] The push block 2 is provided with a positioning hole for installing a positioning pin 7 .
[0047] The pushing block 2 may be provided with a limiting structure on only one side, or may be provided with limiting structures on both sides.
[0048] When both sides of the push block 2 are provided with limiting structures, positioning holes can be provided on both sides of the push block 2, and positioning pins 7 can be installed respectively. Alternatively, a through positioning hole can be provided on the push block 2, and a positioning pin 7 can be used to penetrate the push block 2, so that the two ends of the positioning pin 7 serve as limiting structures on both sides of the push block 2.
[0049] The push block 2 is used to press the PCB board. A vertical surface is provided on the bottom plate 1. The vertical surface is located at one end of the slide groove 6. When the push block 2 moves toward the vertical surface, the push block 2 can cooperate with the vertical surface to press the PCB board, thereby achieving the function of fixing the PCB board. How the push block 2 cooperates with the vertical surface to press the PCB board is not within the scope of improvement of the present utility model. A spring can be provided between the bottom plate 1 and the push block 2, and the two ends of the spring respectively abut against the bottom plate 1 and the push block 2, so that the push block 2 presses the PCB board.
[0050] At least two fixing units are arranged on the bottom plate 1. The number of the fixing units may be 2, 3, 4 or more.
[0051] The fixing units can be arranged along a straight line perpendicular to the slide slot 6, and the fixing units arranged along the straight line form a row. In a row of fixing units, each fixing unit can use the same support structure, and one support structure is used to provide support for each limit strip 3 of the fixing unit in the row.
[0052] One, two, three or more rows of fixing units may be arranged on the bottom plate 1, so as to increase the number of PCB boards fixed on the bottom plate 1 and improve the processing efficiency of the PCB boards.
Claims
1. A PCB board fixing tool, Features: The invention comprises a bottom plate (1), on which a fixing unit is arranged, wherein the fixing unit comprises two limit bars (3), a push block (2) and a support structure, wherein the limit bars (3) are arranged in parallel, a slide groove (6) is formed between the two limit bars (3), the push block (2) is arranged in the slide groove (6), one end of the limit bar (3) is connected to the bottom plate (1), the bottom surface of the other end of the limit bar (3) abuts against the support structure, the bottom surface of the support structure abuts against the bottom plate (1), a gap (4) is formed between the bottom surface of the limit bar (3) and the bottom plate (1), a limit structure is arranged on the side of the push block (2), and the limit structure is in the gap (4).
2. A PCB board fixing tool according to claim 1, Features: Limiting structures are respectively arranged on both sides of the pushing block (2).
3. A PCB board fixing tool according to claim 1, Features: The limiting structure is a positioning pin (7), a positioning hole is provided on the pushing block (2), and the positioning pin (7) is connected to the positioning hole.
4. A PCB board fixing tool according to claim 3, Features: The positioning hole passes through the pushing block (2), and the two ends of the positioning pin (7) are respectively located on both sides of the pushing block (2), so that limiting structures are respectively formed on both sides of the pushing block (2).
5. The PCB board fixing tool according to claim 1, Features: The supporting structure is a horizontally arranged columnar structure.
6. A PCB board fixing tool according to claim 5, Features: The columnar structure is a cylindrical support pin (5).
7. The PCB board fixing tool according to claim 1, Features: The bottom plate (1) is provided with a positioning groove, and the supporting structure is arranged in the positioning groove.
8. The PCB board fixing tool according to claim 1, Features: It includes at least two fixing units.
9. A PCB board fixing tool according to claim 8, Features: The fixing units are distributed along a straight line, and the bottom surface of the limiting strip (3) of each fixing unit abuts against the same supporting structure.
10. A PCB board fixing tool according to claim 9, Features: The fixing units distributed along a straight line are regarded as one row, and at least two rows of fixing units are arranged on the bottom plate (1).