An automatic testing device for printed circuit board production

Abstract

The present invention relates to the field of circuit board detection technology, and in particular to an automatic test device for circuit board production, including a test box; a loading tray, a drive assembly, a fixed frame, a stopper rod and a support plate, etc.; a loading tray is placed on the test box; a calibration unit is provided on the test box; a plurality of fixed rods are rotatably connected to the loading tray; a fixed groove is provided on each fixed rod; a drive assembly is provided on the test box; a fixed frame is connected to the drive assembly; a plurality of stopper rods are rotatably connected to the fixed frame; and a support plate is provided on each stopper rod. The present invention drives the circuit board to tilt through the stopper rod, so that the plug-in port on the circuit board leaks out automatically, and at the same time controls the plug-in row to drive the plug to complete the plug-in work, without the need for the staff to pry open the circuit board to plug and unplug the wires, thereby realizing the automation of plugging and unplugging the wires on the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board detection, and particularly relates to an automatic testing device for circuit board production. Background Art

[0002] During the production process of circuit boards, a high and low temperature test chamber is required to perform high and low temperature tests on them, that is, to simulate the usage conditions of circuit boards in different temperature environments, and to detect whether they can transmit signals normally and whether each electronic component can work normally during high temperature, low temperature, and high and low temperature cycling processes. Before the test, to meet the batch testing requirements, workers need to place multiple circuit boards on a loading tray, and then put the loading tray with the circuit boards into the high and low temperature test chamber. Subsequently, workers need to plug wires into each circuit board to supply power to the circuit board and make it work normally. Since there are many circuit boards and they are stacked densely, the efficiency of workers manually plugging in wires is low, reducing the testing efficiency of circuit boards.

[0003] Furthermore, due to the dense stacking of circuit boards, when workers plug in the circuit boards, they need to pry open the circuit boards to expose the plug interfaces on the circuit boards for plugging in wires. However, the lower ends of the circuit boards are fixed by the loading tray. When workers pry open the circuit boards, the lower ends of the circuit boards are prone to being twisted and damaged, affecting the subsequent testing work of the circuit boards. Summary of the Invention

[0004] In order to overcome the drawbacks that when performing high and low temperature tests on circuit boards, workers need to manually plug in wires, reducing the testing efficiency of circuit boards, and at the same time, when workers pry open the circuit boards, the lower ends of the circuit boards are prone to being twisted and damaged, affecting the subsequent testing work of the circuit boards, the present invention provides an automatic testing device for circuit board production.

[0005] The technical solution of the present invention is: an automatic testing device for circuit board production, including a test chamber; further including a loading tray, a driving component, a fixing frame, a clamping rod, a support plate, and a wire plugging component; the loading tray is placed on the test chamber; a calibration part for limiting and calibrating the loading tray is arranged on the test chamber; a plurality of fixing rods for fixing the lower ends of the circuit boards are rotatably connected to the loading tray; a fixing groove is formed in each fixing rod; a driving component is arranged on the test chamber; the driving component is connected with the fixing frame, and the driving component is used to move the fixing frame up and down and left and right; a plurality of clamping rods for fixing the upper ends of the circuit boards are rotatably connected to the fixing frame; a clamping groove is formed in each clamping rod; a support plate for supporting the circuit board is arranged on each clamping rod; a wire plugging component for convenient wire plugging is connected to the fixing frame.

[0006] As an improvement to the above solution, the driving component includes a first telescopic driving member, a slide rail, and an electric slider; several first telescopic driving members are fixedly connected to the test box; the telescopic ends of all the first telescopic driving members are commonly fixedly connected to a slide rail; several electric sliders are slidably connected to the slide rail; the lower sides of all the electric sliders are commonly fixedly connected to the fixed frame.

[0007] As an improvement to the above solution, the wire plugging component includes a movable block, a second telescopic driving member, a wire plugging row, and plugs; several second telescopic driving members are connected to the fixed frame; the second telescopic driving members are inclined; the telescopic ends of all the second telescopic driving members are commonly fixedly connected to a wire plugging row; the wire plugging row is connected to an external power supply through a wire; several plugs for supplying power to the circuit board are rotatably connected to the wire plugging row.

[0008] As an improvement to the above solution, an adjusting component is further included, and the adjusting component includes a third telescopic driving member and a connecting rod; several sliding grooves are formed in the fixed frame; the second telescopic driving member is slidably arranged in the corresponding sliding groove; the third telescopic driving member is fixedly connected to the lower side of the wire plugging row; the telescopic end of the third telescopic driving member is fixedly connected to a connecting rod for adjusting the inclination angle of the plug; each plug is provided with a movable groove; each plug is slidably connected to the connecting rod through the movable groove.

[0009] As an improvement to the above solution, each fixed groove is arranged in a flared shape.

[0010] As an improvement to the above solution, each card slot is arranged in a flared shape.

[0011] As an improvement to the above solution, several extension parts for protecting the circuit board are arranged on each card stop rod.

[0012] As an improvement to the above solution, a limiting plate is further included; a limiting plate for enhancing the fixing effect on the circuit board is rotatably connected to the loading tray; the upper end of the limiting plate is arranged to be inclined backward; several limiting parts are arranged on the limiting plate; a pressing part is arranged at the rear side of the fixed frame; the pressing part is located above the limiting plate.

[0013] As an improvement to the above solution, each limiting part is arranged in an arc shape.

[0014] As an improvement to the above solution, a protective cover is further included; a protective cover for protecting the wire plugging row is commonly fixedly connected to all the movable blocks; the protective cover is located above the card stop rod; an avoidance groove for avoiding the plugs is formed in the protective cover; each plug penetrates through the avoidance groove up and down; an elastic heat insulation diaphragm is arranged in the avoidance groove.

[0015] The present invention has the following advantages: The present invention realizes tilting the circuit board by the locking rod, so that the plug-in ports on the circuit board are automatically exposed. At the same time, it controls the plug-in row to drive the plug to complete the plugging work, eliminating the need for staff to break open the circuit board for plugging and unplugging work, and realizing the automation of circuit board plugging and unplugging;

[0016] The support plate supports the side of the circuit board plug-in port opposite to each other. At the same time, the extension part wraps the edge of the circuit board to disperse the pressure when the plug is inserted into the plug-in port, preventing the circuit board from bending and deforming due to excessive pressure during plugging, and enhancing the protection effect on the circuit board during the plugging process;

[0017] The limiting part limits the rear side of the circuit board to prevent the circuit board from rotating and shifting left and right on the loading tray, ensuring the normal docking of the locking rod and the upper end of the circuit board;

[0018] The protective cover protects the connection part of the plug-in row and the plug, preventing the service life of the connection part of the plug-in row and the plug from being reduced due to the influence of the test environment, avoiding poor contact during the detection of the circuit board, and ensuring the normal progress of the high and low temperature test of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an automatic testing device for circuit board production according to the present invention;

[0020] Figure 2 It is a combined three-dimensional structural schematic diagram of the loading tray, fixed frame, locking rod, support plate, plug-in component and protective cover of the present invention;

[0021] Figure 3 It is a combined three-dimensional structural schematic diagram of the fixed frame, locking rod, support plate, plug-in component, limiting plate and protective cover of the present invention;

[0022] Figure 4 It is a combined three-dimensional structural schematic diagram of the fixed frame, plug-in component and adjustment component of the present invention;

[0023] Figure 5 It is a combined three-dimensional structural schematic diagram of the plug-in component, adjustment component and protective cover of the present invention;

[0024] Figure 6 It is a combined three-dimensional structural schematic diagram of the fixed frame, locking rod and limiting plate of the present invention;

[0025] Figure 7 It is a state diagram of the circuit board tilted for plugging of the present invention.

[0026] Names of the reference numerals in the figure: 1 - test box, 1001 - calibration unit, 2 - loading tray, 2001 - fixing rod, 2002 - fixing groove, 3 - locking rod, 3001 - clamping groove, 3002 - extension part, 4 - support plate, 101 - first telescopic driving member, 102 - slide rail, 103 - electric slider, 104 - fixing frame, 10401 - sliding groove, 10402 - extrusion part, 201 - movable block, 202 - second telescopic driving member, 203 - wire socket strip, 204 - plug, 20401 - movable groove, 301 - third telescopic driving member, 302 - connecting rod, 401 - limiting plate, 40101 - limiting part, 501 - protective cover, 50101 - avoiding groove. Detailed implementation manners

[0027] The following further describes the technical solution with reference to specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right mentioned in this article are only in terms of the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, for example: the first, the second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connection, coupling, unless otherwise specified, both include direct and indirect connection (coupling).

[0028] Embodiment 1

[0029] As Figures 1-7 shown, an automatic testing device for circuit board production includes a test box 1; the test box 1 is provided with a box door;

[0030] It further includes a loading tray 2, a driving assembly, a fixing frame 104, a locking rod 3, a support plate 4 and a wire inserting assembly; the loading tray 2 is placed on the test box 1; a calibration unit 1001 is arranged on the test box 1; a plurality of fixing rods 2001 are rotatably connected to the loading tray 2 through torsion springs; a fixing groove 2002 is formed on each fixing rod 2001; a driving assembly is arranged on the test box 1; the driving assembly is connected with a fixing frame 104; a plurality of locking rods 3 are rotatably connected to the fixing frame 104 through torsion springs; a clamping groove 3001 is formed on each locking rod 3; a support plate 4 is arranged on each locking rod 3; the fixing frame 104 is connected with a wire inserting assembly.

[0031] The driving assembly includes a first telescopic driving member 101, a slide rail 102 and an electric slider 103; two symmetrically arranged first telescopic driving members 101 are fixedly connected to the test box 1, and the first telescopic driving member 101 is an electric push rod; the telescopic ends of all the first telescopic driving members 101 are commonly fixedly connected with a slide rail 102; two electric sliders 103 are slidably connected to the slide rail 102; the lower sides of all the electric sliders 103 are commonly fixedly connected with the fixing frame 104.

[0032] The wire plugging assembly includes a movable block 201, a second telescopic driving member 202, a wire plugging row 203 and a plug 204; two second telescopic driving members 202 are connected to the fixed frame 104, and the second telescopic driving member 202 is an electric push rod; the second telescopic driving member 202 is inclined; the telescopic ends of all the second telescopic driving members 202 are commonly fixedly connected with a wire plugging row 203; the wire plugging row 203 is connected to an external power supply through a wire; several plugs 204 are rotatably connected to the wire plugging row 203.

[0033] It further includes an adjusting assembly, and the adjusting assembly includes a third telescopic driving member 301 and a connecting rod 302; two sliding grooves 10401 are formed in the fixed frame 104; the second telescopic driving member 202 is slidably arranged in the corresponding sliding groove 10401; a third telescopic driving member 301 is fixedly connected to the lower side of the wire plugging row 203, and the third telescopic driving member 301 is an electric push rod; the telescopic end of the third telescopic driving member 301 is fixedly connected with a connecting rod 302; each plug 204 is provided with a movable groove 20401; each plug 204 is slidably connected with the connecting rod 302 through the movable groove 20401.

[0034] Each fixing groove 2002 is arranged in a flared shape, which is convenient for the staff to insert the circuit board into the fixing groove 2002.

[0035] Each clamping groove 3001 is arranged in a flared shape, which is convenient for the clamping rod 3 to be docked with the circuit board.

[0036] Two symmetrically arranged extending parts 3002 are arranged on each clamping rod 3.

[0037] It further includes a limiting plate 401; the limiting plate 401 is rotatably connected to the loading tray 2 through a torsion spring; the upper end of the limiting plate 401 is arranged to be inclined backward; several limiting parts 40101 are arranged on the limiting plate 401; a pressing part 10402 is arranged at the rear side of the fixed frame 104; the pressing part 10402 is located above the limiting plate 401.

[0038] Each limiting part 40101 is arranged in an arc shape, which is convenient for the fixed frame 104 to descend smoothly through the limiting part 40101 subsequently and push the limiting plate 401 backward.

[0039] When performing high and low temperature tests on the circuit board, the staff first insert the circuit board to be tested into the fixing slots 2002 on each fixing rod 2001 in sequence, and make the wiring ports on the circuit board located at the upper part of the circuit board. During this process, the circuit board is guided by the fixing slots 2002 in a flared shape, which facilitates the staff to insert the circuit board into the fixing slots 2002. After the circuit board is fixed on the fixing rod 2001, the staff place the loading tray 2 into the test box 1 and make the loading tray 2 snap into the calibration part 1001. After the circuit board is placed, the box door is closed. Subsequently, the telescopic end of the first telescopic driving member 101 is extended to drive the slide rail 102, the electric slider 103 and the fixing frame 104 to descend, so that the fixing frame 104 drives the locking rod 3 and the support plate 4 to descend. Combined with Figure 3 Understand, make the locking rod 3 lap on the upper side of the circuit board, and then make the upper end of the circuit board snap into the card slot 3001. By setting the card slot 3001 in a flared shape to guide the upper end of the circuit board, it is convenient for the circuit board to snap into the card slot 3001. At the same time, make the support plate 4 fit against the side of the circuit board where the wiring port is not provided. It should be noted that initially, the card slot 3001 on the locking rod 3 is aligned with the fixing slot 2002 on the corresponding fixing rod 2001. After the upper end of the circuit board is fixed by the locking rod 3, control the first telescopic driving member 101 to drive the slide rail 102, the electric slider 103 and the fixing frame 104 to continue to descend, and at the same time control the electric slider 103 to drive the fixing frame 104 to slide to the left, so that the fixing frame 104 drives the locking rod 3 to slide to the left and descend at the same time. Combined with Figure 7 Understand, make the locking rod 3 drive the upper end of the circuit board to move and rotate to the left, the locking rod 3 rotates with the rotation of the circuit board, and at the same time compress the torsion spring on the locking rod 3. The circuit board drives the fixing rod 2001 to rotate on the loading tray 2 while rotating, and at the same time compress the torsion spring on the fixing rod 2001, so that the circuit board is in the Figure 7 Inclined shape shown, so that the wiring ports on the circuit board are automatically exposed, without subsequent staff adjusting them one by one, which is convenient for subsequent staff to perform wiring work on the circuit board.

[0040] It is also considered that since the fixing rod 2001 can rotate on the loading tray 2, when the circuit board is plugged into the fixing rod 2001, the circuit board and the fixing rod 2001 are easy to rotate and deviate in the left and right directions on the loading tray 2, so that the locking rod 3 cannot normally dock with the upper end of the circuit board. Therefore, when the staff plugs the circuit board into the fixing rod 2001, the rear side of the circuit board is locked into the limiting part 40101 on the limiting plate 401, and the limiting part 40101 limits the rear side of the circuit board to prevent The circuit board rotates and deviates to the left and right directions on the loading tray 2 to ensure that the subsequent locking rod 3 and the upper end of the circuit board can be normally docked. When the fixed frame 104 drives the locking rod 3 to descend and dock with the upper end of the circuit board, the fixed frame 104 drives the extrusion part 10402 to be clamped into the front side of the limit plate 401 with the upper end tilted backward, and squeezes the limit plate 401 backward to separate the limit part 40101 from the rear side of the circuit board, thereby releasing the limit on the circuit board, so that the circuit board can be normally driven by the fixed frame 104 and the locking rod 3 to tilt.

[0041] When the locking rod 3 drives the circuit board to tilt, the telescopic driving member 202 is controlled to drive the plug row 203 to tilt and descend, so that the plug row 203 drives the plug 204 to be plugged into the plug port on the circuit board, thereby realizing convenient plugging of the circuit board. In summary, the present invention tilts the circuit board to make the plug port on the circuit board leak out, and at the same time controls the plug row 203 to drive the plug 204 to complete the plugging work. There is no need for the staff to pry open the circuit board for plugging in the wires, and there is no need for the staff to unplug the wires after the subsequent test is completed, thereby realizing the automation of plugging and unplugging of the circuit board, which not only improves the plugging and unplugging efficiency of the circuit board and reduces the workload of the staff, but also solves the problem that the lower end of the circuit board is twisted on the loading tray 2 because the staff pries the circuit board open on the loading tray 2 when plugging and unplugging the wires, thereby enhancing the protection effect of the circuit board and ensuring the normal testing of the circuit board.

[0042] When the plug 204 is inserted into the socket on the circuit board, the support plate 4 supports the opposite side of the circuit board socket, and at the same time, the extension part 3002 wraps the edge of the circuit board to disperse the pressure when the plug 204 is inserted into the socket, preventing the circuit board from bending and deforming due to excessive pressure during the insertion of the plug 204, enhancing the protection effect on the circuit board during the wiring process. After the plug 204 is inserted into the socket on the circuit board, the external power supply is controlled to supply power to the wiring row 203, so that the wiring row 203 supplies power to the circuit board through the plug 204, enabling the circuit board to work normally. Subsequently, the temperature in the test chamber 1 is controlled to rise, allowing the circuit board to work for a long time in a high-temperature environment to conduct a high-temperature resistance test on the circuit board. After the high-temperature resistance test is completed, the temperature in the test chamber 1 is controlled to drop, enabling the circuit board to work for a long time in a low-temperature environment to conduct a low-temperature test on the circuit board. After the test is completed, the telescopic driving member two 202 is controlled to drive the wiring row 203 to move, so that the wiring row 203 drives the plug 204 to disengage from the socket on the circuit board, completing the convenient wire unplugging operation of the circuit board. Subsequently, the telescopic driving member one 101 is controlled to drive the fixed frame 104 to rise, and at the same time, the electric slider 103 is controlled to drive the fixed frame 104 to move horizontally, so that the fixed frame 104 drives the locking rod 3 to move back to its original position, driving the inclined circuit board on the loading tray 2 to return to its original position. As the telescopic driving member one 101 drives the fixed frame 104 to continue rising, the fixed frame 104 drives the locking rod 3 to separate from the circuit board. Subsequently, the staff takes out the loading tray 2 loaded with the circuit board from the test chamber 1 to complete the high and low temperature test of the circuit board. Subsequently, the staff uses corresponding test equipment and software to detect the basic functions of the tested circuit board to judge the working performance of the circuit board after passing through high and low temperature environments, thereby obtaining the high and low temperature test values of the circuit board.

[0043] It is also considered that due to the different types of circuit boards, there are deviations in the positions of the wiring ports on the circuit boards when testing different batches of circuit boards. Therefore, after the staff place the circuit board on the fixing rod 2001, the wiring port on the circuit board is located at the upper part of the circuit board. Subsequently, the staff can horizontally slide the movable block 201 on the sliding groove 10401, so that the second telescopic driving member 202 and the wiring row 203 move horizontally to align with the wiring port on the circuit board, that is, drive the plug 204 to move and align with the wiring port. Subsequently, control the third telescopic driving member 301 to drive the connecting rod 302 to move, so that the connecting rod 302 slides in the movable groove 20401 on each plug 204, and then the plug 204 rotates on the wiring row 203 to adjust the inclination angle of the plug 204, which is convenient for the plug 204 to be inserted into the wiring port. At the same time, the first telescopic driving member 101 can be controlled to drive the fixing frame 104 to lift and lower, and the electric slider 103 can be controlled to drive the fixing frame 104 to move horizontally. Then, the fixing frame 104 drives the locking rod 3 to move and adjust, so that the locking rod 3 adjusts the inclination angle of the circuit board on the fixing rod 2001, which is beneficial to adapt to circuit boards with different wiring port positions and enhances the adaptability of the equipment.

[0044] Embodiment 2

[0045] On the basis of Embodiment 1, as Figures 2-5 shown, it further includes a protective cover 501; a protective cover 501 is fixedly connected to all the movable blocks 201 together; the protective cover 501 is located above the locking rod 3; an avoidance groove 50101 is opened on the protective cover 501; each plug 204 penetrates through the avoidance groove 50101 up and down; an elastic heat-insulating diaphragm is arranged in the avoidance groove 50101.

[0046] When performing high and low temperature tests on the circuit board, the protective cover 501 protects the wiring row 203 and the connection between the plug 204 and the wiring row 203, reduces the influence of the temperature change in the test chamber 1 on the wiring row 203 and the connection between the plug 204 and the wiring row 203, prevents the service life of the wiring row 203 and the connection between the plug 204 and the wiring row 203 from being reduced due to the influence of the test environment, avoids the situation of poor contact during the detection of the circuit board, and ensures the normal progress of the high and low temperature test of the circuit board. When adjusting the insertion angle of the plug 204, the plug 204 can move in the avoidance groove 50101. At the same time, the elastic heat-insulating diaphragm in the avoidance groove 50101 seals the inside of the protective cover 501, ensuring the sealing effect of the protective cover 501 on the connection between the wiring row 203 and the plug 204, and further reducing the influence of the temperature change in the test chamber 1 on the connection between the wiring row 203 and the plug 204, which is beneficial to extending the service life of the wiring row 203 and the plug 204.

[0047] The above has introduced the present application in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An automatic testing device for circuit board production, comprising a test box (1); characterized in that: The test box (1) also comprises a loading tray (2), a driving assembly, a fixing frame (104), a locking rod (3), a support plate (4) and a plug-in assembly; the loading tray (2) is placed on the test box (1); a calibration portion (1001) for limiting and calibrating the loading tray (2) is provided on the test box (1); a plurality of fixing rods (2001) for fixing the lower end of a circuit board are rotatably connected to the loading tray (2); each fixing rod (2001) is provided with a fixing groove (2002); the test box (1) is provided with a driving assembly; a fixing frame (104) is connected to the driving assembly, and the driving assembly is used to move the fixing frame (104) up and down and left and right; a plurality of locking rods (3) for fixing the upper end of the circuit board are rotatably connected to the fixing frame (104); each locking rod (3) is provided with a locking groove (3001); each locking rod (3) is provided with a support plate (4) for supporting the circuit board; a plug-in assembly for convenient plugging of wires is connected to the fixing frame (104); The driving assembly comprises a telescopic driving member (101), a slide rail (102) and an electric slider (103); a plurality of telescopic driving members (101) are fixedly connected to the test box (1); the telescopic ends of all telescopic driving members (101) are fixedly connected to a slide rail (102); a plurality of electric sliders (103) are slidably connected to the slide rail (102); the lower sides of all the electric sliders (103) are fixedly connected to a fixed frame (104); The plug-in assembly comprises a movable block (201), a telescopic drive member 2 (202), a plug-in row (203) and a plug (204); a plurality of telescopic drive members 2 (202) are connected to a fixed frame (104); the telescopic drive members 2 (202) are arranged in an inclined manner; the telescopic ends of all telescopic drive members 2 (202) are fixedly connected to a plug-in row (203); the plug-in row (203) is connected to an external power supply via electric wires; and a plurality of plugs (204) for supplying power to a circuit board are rotatably connected to the plug-in row (203); It also comprises a limiting plate (401); the limiting plate (401) is rotatably connected to the loading plate (2) for enhancing the fixing effect of the circuit board; the upper end of the limiting plate (401) is arranged to be tilted backward; a plurality of limiting portions (40101) are arranged on the limiting plate (401); a pressing portion (10402) is arranged on the rear side of the fixing frame (104); and the pressing portion (10402) is located above the limiting plate (401).

2. The automatic test equipment for circuit board production according to claim 1, characterized in that: The invention also comprises an adjustment component, which comprises a telescopic drive member 3 (301) and a connecting rod (302); a plurality of sliding grooves (10401) are provided on the fixed frame (104); the telescopic drive member 2 (202) is slidably arranged in the corresponding sliding grooves (10401); the lower side of the plug row (203) is fixedly connected with the telescopic drive member 3 (301); the telescopic end of the telescopic drive member 3 (301) is fixedly connected with the connecting rod (302) for adjusting the tilt angle of the plug (204); each plug (204) is provided with a movable groove (20401); each plug (204) is slidably connected to the connecting rod (302) via the movable groove (20401).

3. The automatic test equipment for circuit board production according to claim 1, characterized in that: Each fixing groove (2002) is configured to be in a flared shape.

4. The automatic test equipment for circuit board production according to claim 1, characterized in that: Each card slot (3001) is configured to be in a flared shape.

5. The automatic test equipment for circuit board production according to claim 1, characterized in that: Each locking rod (3) is provided with a plurality of extension parts (3002) for protecting the circuit board.

6. The automatic test equipment for circuit board production according to claim 1, characterized in that: Each limiting portion (40101) is configured to be in an arc shape.

7. The automatic test equipment for circuit board production according to claim 1, characterized in that: It also includes a protective cover (501); a protective cover (501) for protecting the plug strip (203) is fixedly connected to all the movable blocks (201); the protective cover (501) is located above the locking rod (3); an escape groove (50101) for escaping the plug (204) is provided on the protective cover (501); each plug (204) passes through the escape groove (50101) from top to bottom; and an elastic heat-insulating diaphragm is provided in the escape groove (50101).

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