A flip fixture for PCB board processing

Abstract

The utility model discloses a flip jig for PCB board processing, which belongs to the technical field of PCB board processing, and comprises two symmetrically arranged L support seats, a plurality of limit blocks are arranged in a rectangular distribution on the top surface of the jig plate and close to the edge side, and the upper part of each limit block has a pneumatic finger, and a plurality of movable limit blocks are symmetrically arranged between the plurality of limit blocks and located on the top surface of the jig plate, one of the L support seats has a stepper motor at the lower part of the inner wall, and a synchronous wheel at the upper part of the inner wall, and the driving wheel on the output shaft of the stepper motor drives the synchronous wheel through a belt, and the output end of the synchronous wheel is fixedly connected to the jig plate, and each of the movable limit blocks is connected to the jig plate through a magnetic suction component, and a proximity switch is arranged on one side of the jig plate. It is suitable for areas with relatively narrow space; the mode of limit block + movable limit block also makes it directly compatible with PCB boards of different sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board processing, in particular to a turning fixture for PCB board processing. Background Art

[0002] PCB, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a "printed" circuit board. According to the number of circuit layers, it is divided into single-sided board, double-sided board and multi-layer board. Common multi-layer boards are generally 4-layer boards or 6-layer boards, and complex multi-layer boards can reach dozens of layers.

[0003] At present, the common flipping jigs on the market can either only adapt to small-sized PCB boards, or have complex structures and occupy a large space. They are not suitable for large-sized PCB boards with space constraints, and cannot perform timely flip processing on PCB boards, which reduces processing efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a turning jig for PCB board processing to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flip jig for PCB board processing, comprising two symmetrically arranged L-support seats, a jig plate is rotatably arranged between the two L-support seats, a plurality of limit blocks are arranged on the top surface of the jig plate and close to the edge side in a rectangular distribution, each of the limit blocks has a pneumatic finger on the upper part, a plurality of movable limit blocks are symmetrically arranged between the plurality of limit blocks and on the top surface of the jig plate, one of the L-support seats has a stepper motor on the lower part of the inner wall, and a synchronous wheel on the upper part of the inner wall, the driving wheel on the output shaft of the stepper motor drives the synchronous wheel through a belt, the output end of the synchronous wheel is fixedly connected to the jig plate, each of the movable limit blocks is connected to the jig plate through a magnetic attraction component, and a proximity switch is arranged on one side of the jig plate.

[0006] Preferably, each of the limit blocks has a mounting base block, and each pneumatic finger is arranged on one side of the mounting base block.

[0007] Preferably, the magnetic attraction component includes an adsorption magnet block fixedly arranged on the bottom surface of each movable limit block, and the top surface of the fixture plate is provided with a plurality of positioning pin holes which are plugged into the adsorption magnet block and magnetically attracted.

[0008] Preferably, a motor support frame is welded to the outside of the stepper motor and on the outer surface of the L support seat, and the stepper motor is fixedly sleeved in the motor support frame.

[0009] Preferably, a limit sensor is provided in the output direction of the stepper motor and on the inner wall of the adjacent L-support seat, and the limit sensor faces one side of the fixture plate.

[0010] Preferably, a U-shaped clamping head is rotatably mounted on the upper portion of the inner wall of the other L-shaped support seat, and two clamping head blocks of the U-shaped clamping head centripetally clamp the fixture plate.

[0011] Preferably, the top surface of the L-support seat on which the U-shaped clamping head is mounted has a camera calibration block.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0013] The turning jig for PCB processing has a rotation center at the center of the PCB and multiple support points to support the PCB to ensure that the PCB will not bend. This design is suitable for areas with relatively narrow space. The limit block + movable limit block method also makes it directly compatible with PCB boards of different sizes. This solution is compatible with products of different specifications. When changing the product type, you only need to pull out the movable limit block and put it in the specified position. There is an adsorption magnet block at the bottom of the movable limit block, and the positioning pin hole near the adsorption magnet block is added for positioning and quick replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 It is a structural schematic diagram of the connection state of the pneumatic finger and the limit block of the utility model.

[0018] Description of reference numerals:

[0019] In the figure: 1. stepper motor; 2. belt; 3. synchronous wheel; 4. blocking hard limit; 5. adsorption magnet block; 6. pneumatic finger; 7. limit block; 8. movable limit block; 9. camera calibration block; 10. proximity switch; 11. limit sensor; 12. L support seat; 13. U-shaped clamping head; 14. U-shaped bracket; 15. motor carrier; 16. fixture plate; 17. clamping head block; 18. mounting base block. DETAILED DESCRIPTION

[0020] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0021] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0022] This embodiment discloses Figures 1 to 3 The flipping fixture for PCB processing shown in the figure, PCB boards include single-sided boards and double-sided boards, and the parts of single-sided PCB boards are concentrated on one side, and the wires are concentrated on the other side. Because the wires only appear on one side, double-sided boards: There are wiring on both sides of this circuit board, but to use the wires on both sides, there must be appropriate circuit connections between the two sides. This "bridge" between circuits is called a via. A via is a small hole filled or coated with metal on the PCB, which can be connected to the wires on both sides.

[0023] When processing a PCB board, whether it is a single-sided board or a double-sided board, a flip jig is required, and the jig includes two symmetrically arranged L-support seats 12, and a jig plate 16 is rotatably arranged between the two L-support seats 12. A stepper motor 1 is provided on the lower part of the inner wall of one of the L-support seats 12, and a synchronous wheel 3 is provided on the upper part of the inner wall. The driving wheel on the output shaft of the stepper motor 1 drives the synchronous wheel 3 through a belt 2, and the output end of the synchronous wheel 3 is fixedly connected to the jig plate 16. A U-shaped clamping head 13 is rotatably installed on the upper part of the inner wall of the other L-support seat 12, and the two clamping head blocks 17 of the U-shaped clamping head 13 clamp the jig plate 16 centripetally.

[0024] The stepper motor 1 drives the synchronous wheel 3 to rotate through the belt 2, and the synchronous wheel 3 drives the fixture plate 16 to rotate, while the U-shaped clamping head 13 rotates on the upper part of the inner wall of the other L support seat 12, thereby realizing the flipping of the fixture plate 16 and the PCB board.

[0025] A plurality of limit blocks 7 are arranged in a rectangular distribution on the top surface of the jig plate 16 and near the edge side, and a pneumatic finger 6 is provided on the upper part of each limit block 7. A plurality of movable limit blocks 8 are symmetrically arranged between the plurality of limit blocks 7 and on the top surface of the jig plate 16. Each movable limit block 8 is connected to the jig plate 16 through a magnetic attraction component. A proximity switch 10 is arranged on one side of the jig plate 16. The magnetic attraction component includes an adsorption magnet block 5 fixedly arranged on the bottom surface of each movable limit block 8. A plurality of positioning pin holes which are plugged into the adsorption magnet block 5 and magnetically attracted are opened on the top surface of the jig plate 16.

[0026] This solution is compatible with products of different specifications. When changing the product type, you only need to pull out the movable limit block 8 and put it in the specified position. There is an adsorption magnet block 5 at the bottom of the movable limit block 8, and the positioning pin hole near the adsorption magnet block 5 is added for positioning and quick replacement.

[0027] An inverted U-shaped bracket 14 is welded on the top surface of the jig plate 16 and close to the side of the proximity switch 10, and a blocking hard limit 4 is provided on one side of the limit sensor 11 and located on the top surface of the jig plate 16. Each limit block 7 has a mounting base block 18, and each pneumatic finger 6 is arranged on one side of the mounting base block 18. A motor carrier 15 is welded on the outside of the stepper motor 1 and located on the outer surface of the L support seat 12. The stepper motor 1 is fixedly sleeved in the motor carrier 15. A limit sensor 11 is provided in the output direction of the stepper motor 1 and located on the inner wall of the adjacent L support seat 12. The limit sensor 11 faces one side of the jig plate 16, and a blocking hard limit 4 is provided on one side of the limit sensor 11 and located between the L support seat 12 and the jig plate 16. The top surface of the L support seat 12 on which the U-shaped clamping head 13 is installed has a camera calibration block 9.

[0028] The robot places the large-size PCB board in the limit block 7 and the movable limit block 8. The proximity switch 10 senses the presence of the product and transmits the signal to the PLC. The PLC controls the pneumatic finger 6 to press down and fix the product. The stepper motor 1 drives the synchronous wheel 3 to rotate. After the rotation is completed, the robot clamps the PCB board and moves downward, thus completing the flipping process.

[0029] The PLC model can be selected according to actual needs. In the present utility model, the PLC model is S7-200, which has the advantages of high reliability, strong anti-interference ability and convenient maintenance.

[0030] How it works

[0031] The flipping fixture for PCB board processing is used when it is necessary to flip the PCB board in a space-constrained area, such as using a six-axis manipulator to transfer a large-sized PCB board from a loading position to a docking station, and flipping work needs to be performed in the middle; limited by the movement radius of the manipulator, the width of the flipping fixture added between the docking station and the manipulator should not be too long. At this time, the present solution is used to be compatible with products of different specifications. When changing the product type, it is only necessary to pull out the movable limit block 8 and put it in the specified position. There is an adsorption magnet block 5 at the bottom of the movable limit block 8, and the positioning pin hole near the adsorption magnet block 5 is added for positioning and quick replacement. The manipulator places the large-sized PCB board in the limit block 7 and the movable limit block 8. The proximity switch 10 senses the presence of the product and transmits the signal to the PLC. The PLC controls the pneumatic finger 6 to press down and fix the product, and the stepper motor 1 drives the synchronous wheel 3 to rotate. After the rotation is completed, the manipulator clamps the PCB board and moves downward, thereby completing the flipping process.

[0032] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0033] 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 turning jig for PCB board processing, comprising two symmetrically arranged L-support seats (12), characterized in that: A jig plate (16) is rotatably arranged between the two L-support seats (12); a plurality of limit blocks (7) are arranged on the top surface of the jig plate (16) and close to the edge side in a rectangular distribution; the upper part of each limit block (7) has a pneumatic finger (6); a plurality of movable limit blocks (8) are symmetrically arranged between the plurality of limit blocks (7) and located on the top surface of the jig plate (16); a stepping motor (1) is provided at the lower part of the inner wall of one of the L-support seats (12), and a synchronous wheel (3) is provided at the upper part of the inner wall; the driving wheel on the output shaft of the stepping motor (1) drives the synchronous wheel (3) through a belt (2); the output end of the synchronous wheel (3) is fixedly connected to the jig plate (16); each of the movable limit blocks (8) is connected to the jig plate (16) through a magnetic attraction component; and a proximity switch (10) is provided on one side of the jig plate (16).

2. The turning jig for PCB board processing according to claim 1 is characterized in that: Each of the limit blocks (7) has a mounting base block (18), and each of the pneumatic fingers (6) is arranged on one side of the mounting base block (18).

3. The turning jig for PCB board processing according to claim 2 is characterized in that: The magnetic attraction component comprises an adsorption magnet block (5) fixedly arranged on the bottom surface of each movable limit block (8), and the top surface of the fixture plate (16) is provided with a plurality of positioning pin holes which are plugged into the adsorption magnet block (5) and are magnetically attracted.

4. The turning jig for PCB board processing according to claim 3 is characterized in that: A motor bearing frame (15) is welded outside the stepper motor (1) and on the outer surface of the L support seat (12), and the stepper motor (1) is fixedly sleeved in the motor bearing frame (15).

5. The turning jig for PCB processing according to claim 4 is characterized in that: A limit sensor (11) is provided on the inner wall of the L support seat (12) adjacent to the output direction of the stepper motor (1), and the limit sensor (11) faces one side of the fixture plate (16).

6. The turning jig for PCB processing according to claim 5, characterized in that: A U-shaped clamping head (13) is rotatably mounted on the upper inner wall of the other L-shaped support seat (12), and two clamping head blocks (17) of the U-shaped clamping head (13) clamp the fixture plate (16) centripetally.

7. The turning jig for PCB processing according to claim 6, characterized in that: The top surface of the L-supporting seat (12) on which the U-shaped clamping head (13) is mounted has a camera calibration block (9).

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