Circuit board press-assembly device and process

Abstract

The present invention belongs to the field of integrated circuit board press-fitting and voltage resistance testing technology, and specifically relates to a circuit board press-fitting device and process, which includes a workbench, an annular conveyor belt, a reciprocating conveyor belt, a press-fitting machine and a test assembly; the test assembly includes a test box, a cylinder, a push sleeve, a movable shaft, a movable plate and a voltage resistance tester. The present invention drives the driven sliders to move closer to each other through a push block, and at this time the driven slider drives the inclined push plate thereon to clamp the circuit board, and the inclined push plate pushes the circuit board to move closer to the voltage resistance tester through the inclined surface, so that the circuit board is close to the probe on the voltage resistance tester, thereby improving the connection strength between the circuit board and the voltage resistance tester, and avoiding the circuit board from being loosened during the AC voltage resistance test. When the inclined push plate pushes the circuit board to move closer to the voltage resistance tester, the circuit board detaches from the annular conveyor belt, avoiding static electricity generated by the friction between the circuit board and the annular conveyor belt to break down the electronic components on the circuit board.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit board press-assembly and voltage resistance detection integration, and in particular relates to a circuit board press-assembly device and process. Background Art

[0002] A circuit board press-fit device is a device used to accurately and reliably press-fit electronic components onto a printed circuit board (PCB). A circuit board withstand voltage test involves applying voltage to the circuit board using the test probes of a withstand voltage tester to verify its electrical safety. Existing circuit board press-fit and withstand voltage testing are typically performed on two separate production lines. This requires manual transfer of the press-fitted circuit boards to the withstand voltage testing line, resulting in low production efficiency.

[0003] During the AC withstand voltage test on a circuit board, an alternating voltage is continuously applied to the voltage plate. This alternating voltage generates an alternating electric field. According to Maxwell's electromagnetic theory, a changing electric field produces a changing magnetic field. This changing magnetic field generates electromagnetic forces around the voltage plate. These forces are likely to cause slight vibrations in the voltage plate.

[0004] The vibration of the voltage plate will cause two effects. First, the vibration of the voltage plate will cause the connection point between the circuit board and the test probe to loosen. Second, the vibration of the voltage plate will cause friction between the voltage plate and the conveyor belt, which will cause static electricity to be generated on the voltage plate. The static electricity will interact with the test voltage to produce a transient high-voltage pulse, which can easily cause the electronic components on the voltage plate to be broken down. Summary of the Invention

[0005] The purpose of the present invention is to provide a circuit board press-fitting device and process to address the deficiencies of the prior art and to solve the technical problems in the prior art.

[0006] The object of the present invention can be achieved by the following technical solution: a circuit board press-fitting device, comprising a workbench and an annular conveyor belt and a reciprocating conveyor belt mounted on the workbench, wherein an annular groove is provided on the workbench, the annular groove is slidably engaged with a U-shaped support arm, and the workbench is respectively connected to a press-fitting machine and a test assembly via the U-shaped support arm;

[0007] The test assembly includes a test box, a support plate is installed in the test box, a power supply box is installed on the support plate, a cylinder is installed on the support plate, the cylinder output end is connected to a push sleeve, a movable shaft is slidably installed in the push sleeve, the movable shaft is movably connected to the movable plate, a voltage tester is installed at the bottom of the movable plate, and the voltage tester is connected to the power supply box; a driven slider is slidably installed on the movable plate, an inclined push plate is installed on the driven slider, and a push rod is installed on the push sleeve; when the cylinder is started and the cylinder pushes the push sleeve downward, the push sleeve drives the driven sliders to move closer to each other through the push rod.

[0008] As a further optimization or improvement of this solution, a driven slider and a push block are slidably installed in the movable plate, the push block is connected to the push rod, rack 1 is installed on the push block, rack 2 is installed on the driven slider, and a gear is rotatably installed in the movable plate, and rack 2 and rack 1 are respectively engaged with the gear.

[0009] As a further optimization or improvement of this solution, a fixing bolt is installed on the U-shaped support arm, and the fixing bolt passes through the U-shaped support arm to connect the splint, and the splint is pushed to fit the side wall of the workbench by rotating the fixing bolt.

[0010] As a further optimization or improvement of this solution, an oblique groove is provided in the oblique push plate, an oblique slider is slidably installed in the oblique groove, a side block is installed on the oblique slider, and the oblique push plate is connected to the driven slider through a circuit protection component.

[0011] As a further optimization or improvement of this solution, the circuit protection component includes a rotating shaft, which is fixedly connected to the inclined push plate and rotatably connected to the driven slider. A connecting block groove is provided on the rotating shaft, a positioning groove is provided in the driven slider, and a connecting block is inserted into the positioning groove and the movable plate.

[0012] As a further optimization or improvement of this solution, a stamping plate is slidably installed in the inclined groove, the inclined slider is connected to the stamping plate through a compression spring, and a memory metal is installed in the rotating shaft. The memory metal is located between the connecting block and the stamping plate, and one end of the stamping plate is attached to the memory metal.

[0013] A circuit board press-assembly process is applied to the circuit board press-assembly device described above, and the method comprises the following steps:

[0014] Step S1: placing the circuit board on a reciprocating conveyor belt, and conveying the circuit board to an endless conveyor belt through the reciprocating conveyor belt. Under the action of the endless conveyor belt, the circuit board passes through the press and test assembly in sequence;

[0015] Step S2: When the circuit board passes through the press-fitting machine, the press-fitting machine presses the electronic components onto the circuit board;

[0016] Step S3: When the circuit board passes through the test assembly, the cylinder pushes the push sleeve downward, causing the push sleeve to push the push rod and the push block to move synchronously. The push block drives the driven slider to move closer to each other. At this time, the driven slider drives the inclined push plate on it to move toward the circuit board and clamp the circuit board;

[0017] Step S4: As the inclined push plate continues to move, it pushes the circuit board toward the voltage tester through the inclined surface, so that the circuit board is close to the probe on the voltage tester, and the circuit board is separated from the circular conveyor belt.

[0018] As a further optimization or improvement of this solution, step S4 specifically includes the following steps:

[0019] Step S41: During the test, the memory metal supports the compression spring, and the connecting block is stuck in the connecting block groove and the positioning groove, so that the rotating shaft is fixedly connected to the driven slider and the angle of the inclined push plate is fixed;

[0020] Step S42: If the connection is loose, the temperature of the circuit board rises, the memory metal is deformed by heat, and the memory metal is separated from the support of the spring. The stamping plate pushes the connecting block into the positioning groove. At this time, the inclined push plate rotates under the action of the compression spring, so that the circuit board is separated from the voltage tester.

[0021] Beneficial effects of the present invention:

[0022] (1) The present invention uses a push sleeve to push the push rod and the push block to move synchronously. The push block drives the driven slider to move closer to each other. At this time, the driven slider drives the inclined push plate on it to move toward the circuit board and clamp the circuit board. The inclined push plate pushes the circuit board toward the voltage tester through the inclined surface, so that the circuit board is close to the probe on the voltage tester, improving the connection strength between the circuit board and the voltage tester, and preventing the circuit board from loosening the connection between the voltage board and the voltage tester during the AC voltage test. When the inclined push plate pushes the circuit board toward the voltage tester, the circuit board detaches from the circular conveyor, avoiding static electricity generated by the friction between the circuit board and the circular conveyor to break down the electronic components on the circuit board.

[0023] (2) When the present invention is performing a withstand voltage test on a circuit board, the memory metal supports the compression spring, while the connecting block is stuck in the connecting block groove and the positioning groove, and the angle of the push plate is fixed. If the connection becomes loose, the temperature of the circuit board rises, the memory metal is deformed by the heat, and the memory metal breaks away from the support of the spring. The punching plate pushes the connecting block into the positioning groove. At this time, the push plate rotates under the action of the compression spring, causing the circuit board to break away from the withstand voltage tester, thereby cutting off the current path, effectively preventing instantaneous high voltage from passing through the circuit board and protecting the circuit board.

[0024] (3) The present invention utilizes two working lines: a press machine and a test assembly on a workbench, for integrated circuit board component assembly and a withstand voltage test. The present invention can improve the applicability of the present invention by adjusting the distance between the press machine and the test assembly, and adjusting the interval between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a front view of the overall structure of the present invention.

[0028] Figure 3 Schematic diagram of the internal structure of the test box.

[0029] Figure 4 Schematic diagram of the bottom structure of the test box.

[0030] Figure 5 Schematic diagram of the movable plate structure.

[0031] Figure 6 for Figure 5 A magnified view of the structure of part A.

[0032] Figure 7 This is a schematic diagram of the connection structure between the movable plate and the voltage tester.

[0033] Figure 8 for Figure 7 A magnified view of the structure of part B.

[0034] Figure 9 Schematic diagram of the overall structure of the circuit protection component.

[0035] The following are marked in the figure: 1. Workbench; 2. Annular conveyor belt; 3. Reciprocating conveyor belt; 4. Pressing machine; 5. U-shaped support arm; 6. Test assembly; 601. Test box; 602. Support plate; 603. Cylinder; 604. Movable plate; 605. Push sleeve; 606. Movable shaft; 607. Push rod; 608. Pressure tester; 609. Probe; 610. Inclined push plate; 611. Side block; 612. Push block; 613. Rack 1; 614. Gear; 615. Rack 2; 616. Driven slider; 617. Inclined slider; 618. Inclined slot; 619. Compression spring; 7. Fixing bolt; 8. Power supply box; 9. Circuit protection assembly; 901. Rotating shaft; 902. Stamping plate; 903. Memory metal; 904. Connecting block slot; 905. Connecting block; 906. Positioning slot; 10. Clamp. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 7A circuit board press-fitting device comprises a workbench 1 and an annular conveyor 2 and a reciprocating conveyor 3 mounted on the workbench 1. An annular groove is provided on the workbench 1, and the annular groove is slidably matched with a U-shaped support arm 5. The workbench 1 is connected to a press-fitting machine 4 and a test assembly 6 respectively through the U-shaped support arm 5; the test assembly 6 comprises a test box 601, a support plate 602 is installed in the test box 601, a power supply box 8 is installed on the support plate 602, a cylinder 603 is installed on the support plate 602, and the output end of the cylinder 603 is connected to a push sleeve 605. A movable shaft 606 is slidably installed in the sleeve 605, and the movable shaft 606 is movably connected to the movable plate 604. A voltage tester 608 is installed at the bottom of the movable plate 604, and the voltage tester 608 is connected to the power supply box 8; a driven slider 616 is slidably installed on the movable plate 604, an inclined push plate 610 is installed on the driven slider 616, and a push rod 607 is installed on the push sleeve 605; when the cylinder 603 is started and the cylinder 603 pushes the push sleeve 605 downward, the push sleeve 605 drives the driven sliders 616 to move closer to each other through the push rod 607.

[0038] Specifically, the driven slider 616 and the push block 612 are slidably installed in the movable plate 604, the push block 612 is connected to the push rod 607, the push block 612 is installed on the rack 1 613, the driven slider 616 is installed on the rack 2 615, and the gear 614 is rotatably installed in the movable plate 604, and the rack 2 615 and the rack 1 613 are respectively engaged with the gear 614.

[0039] It should be noted that during the AC withstand voltage test of a circuit board, the slight vibration of the circuit board is not only caused by electromagnetic force, but also because the transformer in the AC withstand voltage test equipment vibrates due to the alternating magnetic field. This vibration is transmitted to the voltage board through mechanical connection or electromagnetic coupling.

[0040] When the present invention is in use, the circuit board is placed on the reciprocating conveyor belt 3, and the circuit board is transported to the circular conveyor belt 2 by the reciprocating conveyor belt 3. Under the action of the circular conveyor belt 2, the circuit board passes through the press 4 and the test assembly 6 in sequence. When the circuit board passes through the press 4, the press 4 presses the electronic components onto the circuit board.

[0041] When the circuit board passes through the test assembly 6, the cylinder 603 is activated, pushing the push sleeve 605 downward. When the inclined push plate 610 contacts the endless conveyor belt 2, the push sleeve 605 pushes the push rod 607 and the push block 612 to move synchronously. Under the transmission action of the rack 1 613 and the rack 2 615 and the gear 614, the push block 612 drives the driven slider 616 to move closer to each other. At this time, the driven slider 616 drives the inclined push plate 610 on it to move toward the circuit board and clamp the circuit board. As the inclined push plate 610 continues to move, the inclined push plate 610 pushes the circuit board toward the voltage tester 608 through its inclined surface, making the circuit board close to the probe 609 on the voltage tester 608, preventing the circuit board from loosening the connection between the voltage board and the voltage tester 608 during the AC voltage test. When the inclined push plate 610 pushes the circuit board toward the voltage tester 608, the circuit board is separated from the endless conveyor belt 2, preventing static electricity generated by the friction between the circuit board and the endless conveyor belt 2 from breaking down the electronic components on the voltage board.

[0042] Specifically, when the circuit board moves closer to the voltage tester 608, the compression spring 619 is compressed, and the side block 611 applies a clamping force to the side of the circuit board under the action of the compression spring 619, thereby facilitating the positioning of the circuit board and the probe 609.

[0043] It should be noted that rollers can be installed at the position where the inclined push plate 610 contacts the endless conveyor belt 2 to reduce friction between the inclined push plate 610 and the endless conveyor belt 2. The parts where the inclined push plate 610 and the side blocks 611 contact the circuit board are made of flexible materials to prevent the inclined push plate 610 and the side blocks 611 from damaging the circuit board.

[0044] See also Figure 1-Figure 2 The U-shaped support arm 5 is provided with a fixing bolt 7 , which passes through the U-shaped support arm 5 and is connected to the clamping plate 10 . The fixing bolt 7 is rotated to push the clamping plate 10 to fit the side wall of the workbench 1 .

[0045] The present invention utilizes two work lines, one for integrated circuit board component assembly and the other for withstand voltage testing, via a press machine 4 and a test assembly 6 on a workbench 1. Other work lines can be integrated via a slideway on the workbench 1. Furthermore, the present invention can adjust the distance between the press machine 4 and the test assembly 6, thereby adjusting the interval between the two and thereby improving the usability of the present invention.

[0046] See also Figure 7-Figure 9 The inclined push plate 610 has an inclined groove 618, an inclined slider 617 is slidably installed in the inclined groove 618, and a side block 611 is installed on the inclined slider 617. The inclined push plate 610 is connected to the driven slider 616 through the circuit protection component 9.

[0047] Specifically, the circuit protection component 9 includes a rotating shaft 901, which is fixedly connected to the inclined push plate 610, and is rotatably connected to the driven slider 616. A connecting block groove 904 is provided on the rotating shaft 901, and a positioning groove 906 is provided in the driven slider 616. A connecting block 905 is inserted into the positioning groove 906 and the movable plate 604.

[0048] Specifically, the stamping plate 902 is slidably installed in the inclined groove 618, the inclined slider 617 is connected to the stamping plate 902 through the compression spring 619, the memory metal 903 is installed in the rotating shaft 901, the memory metal 903 is located between the connecting block 905 and the stamping plate 902, and one end of the stamping plate 902 is in contact with the memory metal 903.

[0049] It should be noted that during the AC withstand voltage test on a circuit board, if the wiring becomes loose, the contact area between the circuit board and probe 609 decreases, causing the current in the circuit to change. Due to the principle of electromagnetic induction, this current change in the circuit generates an induced electromotive force in the primary and secondary coils of the transformer, which in turn generates a transient high voltage. This transient high voltage passes through the circuit board and the tester, causing damage to both.

[0050] Since the overcurrent protection is generally installed inside the tester, the instantaneous high voltage needs to pass through the tester to trigger the overcurrent protection. When the overcurrent protection is triggered, the instantaneous high voltage has already caused damage to the circuit board. Therefore, the existing overcurrent protection cannot effectively protect the circuit board.

[0051] It should be noted that during the test, the memory metal 903 is connected to the circuit board.

[0052] See also Figure 9 In the initial state, the memory metal 903 supports the compression spring 619, and the connecting block 905 is stuck in the connecting block groove 904 and the positioning groove 906, so that the rotating shaft 901 is fixedly connected to the driven slider 616, and the angle of the inclined push plate 610 is fixed, and the AC withstand voltage test can be carried out normally through the cooperation of the inclined push plate 610 and the side block 611. If the wiring is loose, the impedance of the circuit board increases and the temperature rises, the memory metal 903 is deformed by heat, and the memory metal 903 is separated from the support of the spring. The compression spring 619 drives the stamping plate 902 to impact the connecting block 905, pushing the connecting block 905 into the positioning groove 906. At this time, the inclined push plate 610 rotates under the action of the compression spring 619, and the circuit board is separated from the withstand voltage tester 608 under the action of gravity, thereby cutting off the current path, effectively preventing instantaneous high voltage from passing through the circuit board, and protecting the circuit board. The present invention prevents instantaneous high voltage from passing through the circuit board by cutting off the current path between the voltage plate and the withstand voltage tester 608.

[0053] It should be noted that, at normal temperature, the memory metal 903 is sufficient to support the pressure of the compression spring 619; when the circuit temperature rises, the temperature of the memory metal 903 rises rapidly, the memory metal 903 deforms, and the memory metal 903 is separated from the support of the spring.

[0054] See also Figure 1-Figure 7 As shown, the present invention is a circuit board press-assembly process, which is applied to the circuit board press-assembly device as described in the above embodiment, and the process includes the following steps:

[0055] Step S1: placing a circuit board on the reciprocating conveyor 3, and conveying the circuit board to the endless conveyor 2 via the reciprocating conveyor 3. Under the action of the endless conveyor 2, the circuit board passes through the press 4 and the test assembly 6 in sequence;

[0056] Step S2: When the circuit board passes through the press-fitting machine 4, the press-fitting machine 4 presses the electronic components onto the circuit board;

[0057] Step S3: When the circuit board passes through the test assembly 6, the cylinder 603 pushes the push sleeve 605 downward, causing the push sleeve 605 to push the push rod 607 and the push block 612 to move synchronously. The push block 612 drives the driven slider 616 to move closer to each other. At this time, the driven slider 616 drives the inclined push plate 610 on it to move toward the circuit board and clamp the circuit board;

[0058] Step S4: As the inclined push plate 610 continues to move, the inclined push plate 610 pushes the circuit board toward the voltage tester 608 through the inclined surface, so that the circuit board is close to the probe 609 on the voltage tester 608, and the circuit board is separated from the endless conveyor belt 2.

[0059] See also Figure 7-Figure 9 As shown, as a preferred embodiment of the present invention, step S4 specifically includes the following steps:

[0060] Step S41: During the test, the memory metal 903 supports the compression spring 619, and the connecting block 905 is stuck in the connecting block groove 904 and the positioning groove 906, so that the rotating shaft 901 is fixedly connected to the driven slider 616, and the angle of the inclined push plate 610 is fixed;

[0061] Step S42: If the connection is loose, the temperature of the circuit board rises, the memory metal 903 is deformed by heat, and the memory metal 903 is separated from the support of the spring. The stamping plate 902 pushes the connecting block 905 into the positioning groove 906. At this time, the inclined push plate 610 rotates under the action of the compression spring 619, so that the circuit board is separated from the voltage tester 608.

[0062] The working principle of the present invention is as follows: when in use, the circuit board is placed on the reciprocating conveyor belt 3, and the circuit board is transported to the circular conveyor belt 2 by the reciprocating conveyor belt 3. Under the action of the circular conveyor belt 2, the circuit board passes through the press 4 and the test assembly 6 in sequence. When the circuit board passes through the press 4, the press 4 presses the electronic components onto the circuit board.

[0063] When the circuit board passes through the test assembly 6, the cylinder 603 is activated, pushing the push sleeve 605 downward. When the inclined push plate 610 contacts the endless conveyor belt 2, the push sleeve 605 pushes the push rod 607 and the push block 612 to move synchronously. Under the transmission action of the rack 1 613 and the rack 2 615 and the gear 614, the push block 612 drives the driven slider 616 to move closer to each other. At this time, the driven slider 616 drives the inclined push plate 610 on it to move toward the circuit board and clamp the circuit board. As the inclined push plate 610 continues to move, the inclined push plate 610 pushes the circuit board toward the voltage tester 608 through its inclined surface, making the circuit board close to the probe 609 on the voltage tester 608, preventing the circuit board from loosening the connection between the voltage board and the voltage tester 608 during the AC voltage test. When the inclined push plate 610 pushes the circuit board toward the voltage tester 608, the circuit board is separated from the endless conveyor belt 2, preventing static electricity generated by the friction between the circuit board and the endless conveyor belt 2 from breaking down the electronic components on the voltage board. The power supply box 8 provides alternating current to the withstand voltage tester 608 , and the withstand voltage tester 608 slowly passes the current into the circuit board through the probe 609 , thereby testing the withstand voltage of the circuit board.

[0064] Specifically, when the circuit board moves closer to the voltage tester 608, the compression spring 619 is compressed, and the side block 611 applies a clamping force to the side of the circuit board under the action of the compression spring 619, thereby facilitating the positioning of the circuit board and the probe 609.

[0065] Specifically, during the voltage withstand test of the circuit board, the memory metal 903 supports the compression spring 619, while the connecting block 905 is stuck in the connecting block slot 904 and the positioning slot 906, so that the rotating shaft 901 is fixedly connected to the driven slider 616, and the angle of the inclined push plate 610 is fixed. The AC voltage withstand test is normally performed through the cooperation of the inclined push plate 610 and the side block 611. If the wiring is loose, the impedance of the circuit board increases and the temperature rises, and the memory metal 903 is deformed by heat, causing the memory metal 903 to break away from the support of the spring. The compression spring 619 drives the stamping plate 902 to impact the connecting block 905, pushing the connecting block 905 into the positioning slot 906. At this time, the inclined push plate 610 rotates under the action of the compression spring 619, and the circuit board is separated from the voltage withstand tester 608 under the action of gravity, thereby cutting off the current path, effectively preventing instantaneous high voltage from passing through the circuit board and protecting the circuit board.

[0066] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A circuit board press-fitting device, characterized in that: The invention comprises a workbench (1), an annular conveyor belt (2) and a reciprocating conveyor belt (3) mounted on the workbench (1), an annular groove is provided on the workbench (1), the annular groove is slidably matched with a U-shaped support arm (5), and the workbench (1) is respectively connected to a press (4) and a test assembly (6) via the U-shaped support arm (5); The test assembly (6) comprises a test box (601), a support plate (602) is installed in the test box (601), a power supply box (8) is installed on the support plate (602), a cylinder (603) is installed on the support plate (602), an output end of the cylinder (603) is connected to a push sleeve (605), a movable shaft (606) is slidably installed in the push sleeve (605), the movable shaft (606) is movably connected to the movable plate (604), and a pressure test device is installed at the bottom of the movable plate (604). The tester (608) and the withstand voltage tester (608) are connected to the power supply box (8); a driven slider (616) is slidably installed in the movable plate (604), an inclined push plate (610) is installed on the driven slider (616), and a push rod (607) is installed on the push sleeve (605); when the cylinder (603) is started and the cylinder (603) pushes the push sleeve (605) downward, the push sleeve (605) drives the driven slider (616) to move closer to each other through the push rod (607); A push block (612) is slidably installed in the movable plate (604), the push block (612) is connected to the push rod (607), a rack 1 (613) is installed on the push block (612), a rack 2 (615) is installed on the driven slider (616), and a gear (614) is rotatably installed in the movable plate (604), and the rack 2 (615) and the rack 1 (613) are respectively engaged with the gear (614).

2. A circuit board press-fitting device according to claim 1, characterized in that: A fixing bolt (7) is installed on the U-shaped support arm (5), and the fixing bolt (7) passes through the U-shaped support arm (5) to connect the clamping plate (10). By rotating the fixing bolt (7), the clamping plate (10) is pushed to fit the side wall of the workbench (1).

3. The circuit board press-fitting device according to claim 1, wherein: An oblique groove (618) is provided in the oblique push plate (610), an oblique slider (617) is slidably installed in the oblique groove (618), a side block (611) is installed on the oblique slider (617), and the oblique push plate (610) is connected to the driven slider (616) via a circuit protection component (9).

4. A circuit board press-fitting device according to claim 3, characterized in that: The circuit protection assembly (9) includes a rotating shaft (901), the rotating shaft (901) is fixedly connected to the inclined push plate (610), the rotating shaft (901) is rotatably connected to the driven slider (616), a connecting block groove (904) is provided on the rotating shaft (901), a positioning groove (906) is provided in the driven slider (616), and a connecting block (905) is inserted into the positioning groove (906) and the movable plate (604).

5. A circuit board press-assembly device according to claim 4, characterized in that: A stamping plate (902) is slidably installed in the inclined groove (618), and the inclined slider (617) is connected to the stamping plate (902) via a compression spring (619). A memory metal (903) is installed in the rotating shaft (901), and the memory metal (903) is located between the connecting block (905) and the stamping plate (902), and one end of the stamping plate (902) is in contact with the memory metal (903).

6. A circuit board press-assembly process, characterized in that: The process is applied to the circuit board press-fitting device according to any one of claims 1 to 5, and the process comprises the following steps: Step S1: placing a circuit board on a reciprocating conveyor belt (3), conveying the circuit board to an annular conveyor belt (2) via the reciprocating conveyor belt (3), and under the action of the annular conveyor belt (2), the circuit board passes through a press (4) and a test assembly (6) in sequence; Step S2: When the circuit board passes through the press-fitting machine (4), the press-fitting machine (4) presses the electronic components onto the circuit board; Step S3: When the circuit board passes through the test assembly (6), the cylinder (603) pushes the push sleeve (605) downward, so that the push sleeve (605) pushes the push rod (607) and the push block (612) to move synchronously, and the push block (612) drives the driven slider (616) to move closer to each other. At this time, the driven slider (616) drives the inclined push plate (610) thereon to move toward the circuit board and clamp the circuit board; Step S4: As the inclined push plate (610) continues to move, the inclined push plate (610) pushes the circuit board toward the voltage tester (608) through the inclined surface, so that the circuit board is closely attached to the probe (609) on the voltage tester (608), and the circuit board is separated from the circular conveyor belt (2).

7. A circuit board press-assembly process according to claim 6, characterized in that: The step S4 specifically includes the following steps: Step S41: During the test, the memory metal (903) supports the compression spring (619), and the connecting block (905) is stuck in the connecting block groove (904) and the positioning groove (906), so that the rotating shaft (901) is fixedly connected to the driven slider (616), and the angle of the inclined push plate (610) is fixed; Step S42: If the connection is loose, the temperature of the circuit board rises, the memory metal (903) is deformed by the heat, and the memory metal (903) is separated from the support of the spring. The stamping plate (902) pushes the connecting block (905) into the positioning groove (906). At this time, the inclined push plate (610) rotates under the action of the compression spring (619), so that the circuit board is separated from the voltage tester (608).

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