An automatic dotting device is extended to a circuit board electrical testing machine

Abstract

The utility model discloses a kind of line board electric testing machine extension automatic dotting device, including device main body, two symmetrical conveyors are provided on device main body, through the mutual cooperation of the structure such as device main body, back-shaped clamp plate and reset spring provided, so that it can be in dotting, by conveyor, line board is conveyed to the device main body top plane between two conveyors, at this time, it can be driven lifting plate vertical drop by hydraulic telescopic rod, at this time, it can make back-shaped clamp plate first contact with line board, and by the continuous drop of lifting plate, realize the compaction of line board, and by the setting of sliding rod, it can make back-shaped clamp plate drive four sliding rods along lifting plate and extrude reset spring when lifting plate continuously drops, finally make dotting pen contact with line board and carry out dotting work, and because the bottom of line board is the top plane of device main body, support surface is larger, can guarantee that line board does not occur bending and damage in dotting process.

Description

Technical Field

[0001] This utility model relates to the field of electrical testing equipment technology, specifically to an extended automatic marking device for circuit board electrical testing equipment. Background Technology

[0002] Electrical testing machines are widely used as a product quality inspection tool. With the advancement of science, early manual inspection has gradually been replaced by machine inspection. During machine inspection, marking is required on the inspected products to distinguish between good and bad products. During the marking process, some equipment lacks the ability to fix the workpiece. For some products, such as PCB boards, the pressure of the marking machine can cause the PCB board to warp, which not only affects the marking effect but may also cause the board to move, affecting the process. At the same time, some equipment with fixing devices may cause very thin PCB boards to bend and deform under pressure due to excessive force of the marking machine, resulting in internal metal breakage.

[0003] Patent CN212845778U discloses an extended automatic marking device for a circuit board electrical testing machine, belonging to the field of electrical testing machine technology. This utility model includes a conveyor pulley, an upper testing box, a lower testing box, and a marking device. The conveyor pulley is installed above the box body, the upper testing box is installed above the conveyor pulley, the lower testing box is located inside the box body, and the marking device is installed on the right side of the upper testing box. The marking device includes a marking cylinder, a marking pen, a support cylinder, and a rubber gasket. The marking cylinder is installed above the conveyor pulley, and the support cylinder is located inside the box body. A rubber gasket is installed on the piston of the support cylinder. This utility model, through the conveyor pulley with a gap in the middle, can simultaneously test both the upper and lower ends when the workpiece is transported to the testing box, improving testing efficiency. Simultaneously, the use of a support cylinder below the marking device ensures that the board material will not bend or be damaged during the marking process, and also makes the marking marks clearer and easier to identify.

[0004] However, this device only supports the circuit board through a support cylinder and rubber pads, which is a relatively simple support point. The process of marking the points will still cause the circuit board to bend to a certain extent. In addition, the device only uses the cooperation of rollers and springs to press and fix the workpiece, which is a relatively simple force application point and can easily cause damage to the surface of the circuit board. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an extended automatic marking device for circuit board electrical testing machines, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an extended automatic marking device for circuit board electrical testing machines, comprising a main body, two symmetrically arranged conveyor belts on the main body, a gantry frame mounted on the main body, a hydraulic telescopic cylinder mounted on the gantry frame, a lifting plate mounted on the output end of the hydraulic telescopic cylinder, a marking pen mounted on the bottom of the lifting plate, four sliding rods arranged in a matrix slidably mounted on the lifting plate, the bottom of the four sliding rods being fitted with the same U-shaped pressure plate, and a return spring sleeved on each of the four sliding rods, one end of the return spring abutting against the U-shaped pressure plate, and the other end of the return spring abutting against the lifting plate, with the top plane of the main body of the device directly below the marking pen.

[0009] Preferably, each of the four sliding rods has a stop welded to its top, and the diameter of the stop is larger than the diameter of the sliding rod.

[0010] Preferably, the main body of the device has a sliding cavity, in which a movable plate is slidably arranged. Two sets of mutually symmetrical connecting frames are installed on the movable plate. A power roller is rotatably installed on the connecting frame. A micro motor is installed at one end of the connecting frame. The output shaft of the micro motor is installed on the power roller. Two mutually symmetrical rectangular lifting holes are opened on the top inner wall of the sliding cavity and are connected to the outside. The rectangular lifting holes allow the connecting frame, the micro motor and the power roller to pass through.

[0011] Preferably, the sliding cavity is provided with four compression springs arranged in a matrix, one end of the compression spring abutting against the inner wall of the sliding cavity, and the other end of the compression spring abutting against the movable plate.

[0012] Preferably, the top of the movable plate is provided with two symmetrical connecting rods, and the top of the connecting rods is installed at the bottom of the lifting plate.

[0013] Preferably, the top inner wall of the sliding cavity has two symmetrical sliding holes that are adapted to the connecting rod.

[0014] Preferably, a control panel is installed on the main body of the device, and the hydraulic telescopic rod and the micro motor are electrically connected to the control panel.

[0015] Compared with the prior art, this utility model provides an extended automatic marking device for circuit board electrical testing machines, which has the following beneficial effects: Through the cooperation of the device body, the U-shaped pressure plate, and the return spring, the circuit board is transported to the top plane of the device body between two conveyor belts during marking. At this time, the hydraulic telescopic rod drives the lifting plate to descend vertically, allowing the U-shaped pressure plate to contact the circuit board first. The continuous descent of the lifting plate then presses the circuit board firmly. The sliding rods allow the U-shaped pressure plate to slide along the lifting plate and compress the return spring as the lifting plate continues to descend, ultimately bringing the marking pen into contact with the circuit board for marking. Furthermore, because the bottom of the circuit board is the top plane of the device body, the large support surface ensures that the circuit board will not bend or be damaged during the marking process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the power roller and movable plate of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the connecting rod and lifting plate of this utility model.

[0019] Figure 4 This is a cross-sectional structural diagram of the connecting frame and power roller of this utility model.

[0020] The components include: 1. Main body of the device; 2. Conveyor belt; 3. Gantry frame; 4. Hydraulic telescopic cylinder; 5. Lifting plate; 6. Sliding rod; 7. Reverse pressure plate; 8. Connecting frame; 9. Power roller; 10. Return spring; 11. Dotting pen; 12. Micro motor; 13. Sliding cavity; 14. Movable plate; 15. Compression spring; 16. Sliding hole; 17. Connecting rod; 18. Stop block; 19. Control panel; 20. Rectangular lifting hole. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-4 An extended automatic marking device for circuit board electrical testing includes a main body 1, on which two symmetrical conveyor belts 2 are installed. A gantry frame 3 is installed on the main body 1, and a hydraulic telescopic cylinder 4 is installed on the gantry frame 3. A lifting plate 5 is installed on the output end of the hydraulic telescopic cylinder 4. A marking pen 11 is installed at the bottom of the lifting plate 5. Four sliding rods 6 arranged in a matrix are slidably installed on the lifting plate 5. The bottom of the four sliding rods 6 is equipped with the same U-shaped pressure plate 7. A return spring 10 is sleeved on each of the four sliding rods 6. One end of the return spring 10 abuts against the U-shaped pressure plate 7, and the other end of the return spring 10 abuts against the lifting plate 5. The top plane of the main body 1 is directly below the marking pen 11.

[0025] Through the coordinated structure of the main body 1, the U-shaped pressure plate 7, and the return spring 10, the circuit board can be transported to the top plane of the main body 1 between the two conveyor belts 2 during dotting. At this time, the lifting plate 5 can be driven to descend vertically by the hydraulic telescopic rod. This allows the U-shaped pressure plate 7 to contact the circuit board first. Through the continuous descent of the lifting plate 5, the circuit board is pressed. With the setting of the sliding rod 6, the U-shaped pressure plate 7 can drive the four sliding rods 6 to slide along the lifting plate 5 and squeeze the return spring 10 as the lifting plate 5 continues to descend. Finally, the dotting pen 11 contacts the circuit board to perform dotting work. Since the bottom of the circuit board is the top plane of the main body 1, the support surface is large, which can ensure that the circuit board will not bend or be damaged during dotting.

[0026] Specifically, in this embodiment, the top of each of the four sliding rods 6 is welded with a stop 18, and the diameter of the stop 18 is larger than the diameter of the sliding rod 6.

[0027] By setting the stop 18, the sliding range of the sliding rod 6 can be limited.

[0028] Specifically, in this embodiment, a sliding cavity 13 is provided inside the main body 1 of the device. A movable plate 14 is slidably arranged inside the sliding cavity 13. Two sets of mutually symmetrical connecting frames 8 are installed on the movable plate 14. A power roller 9 is rotatably installed on the connecting frame 8. A micro motor 12 is installed at one end of the connecting frame 8. The output shaft of the micro motor 12 is installed on the power roller 9. Two mutually symmetrical rectangular lifting holes 20 are opened on the top inner wall of the sliding cavity 13 and are connected to the outside. The rectangular lifting holes 20 allow the connecting frame 8, the micro motor 12 and the power roller 9 to pass through. Four compression springs 15 are arranged in a matrix inside the sliding cavity 13. One end of the compression spring 15 abuts against the inner wall of the sliding cavity 13 and the other end of the compression spring 15 abuts against the movable plate 14. Two mutually symmetrical connecting rods 17 are protruding from the top of the movable plate 14. The top of the connecting rods 17 is installed at the bottom of the lifting plate 5.

[0029] Through the coordinated structure of the connecting rods 17, movable plate 14, and power roller 9, when the hydraulic telescopic cylinder 4 drives the lifting plate 5 to descend vertically for marking work, the lifting plate 5 can drive the movable plate 14 to descend vertically via the two connecting rods 17, squeezing the compression spring 15. This causes the two connecting frames 8 and the power roller 9 on the connecting frames 8 to descend along the rectangular lifting holes 20 into the sliding cavity 13, ensuring that the circuit board ground is in complete contact with the top surface of the device body 1. After the marking work is completed, the elastic potential energy of the compression spring 15 can push the movable plate 14 to automatically reset, causing the two power rollers 9 to extend from the two rectangular lifting holes 20 and lift the circuit board. At this time, the micro motor 12 can drive the power roller 9 to rotate, transporting the marked circuit board to another conveyor belt 2, and then the conveyor belt 2 will transport the circuit board to the next process. This eliminates the need for manual handling by the staff, improving work efficiency.

[0030] Specifically, in this embodiment, two symmetrical sliding holes 16 are provided on the top inner wall of the sliding cavity 13 and are adapted to the connecting rod 17.

[0031] The sliding hole 16 provides guidance for the movement of the connecting rod 17.

[0032] Specifically, in this embodiment, a control panel 19 is installed on the main body 1 of the device. The hydraulic telescopic rod and the micro motor 12 are electrically connected to the control panel 19, and the start and stop of the hydraulic telescopic rod and the micro motor 12 can be controlled by the control panel 19.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extended automatic dotter for a line board electrical tester, comprising a device main body, characterized by: The main body of the device is equipped with two symmetrical conveyor belts. A gantry frame is mounted on the main body, and a hydraulic telescopic cylinder is mounted on the gantry frame. A lifting plate is mounted on the output end of the hydraulic telescopic cylinder. A dotting pen is mounted on the bottom of the lifting plate. Four sliding rods arranged in a matrix are slidably mounted on the lifting plate. The bottom of the four sliding rods is equipped with the same U-shaped pressure plate. Each of the four sliding rods is fitted with a return spring. One end of the return spring abuts against the U-shaped pressure plate, and the other end of the return spring abuts against the lifting plate. The top plane of the main body of the device is directly below the dotting pen.

2. The extended automatic dotter of a line board electrical tester according to claim 1, wherein: Each of the four sliding rods has a stop welded to its top, and the diameter of the stop is larger than the diameter of the sliding rod.

3. The extended automatic dotter of a line board electrical tester according to claim 1, wherein: The main body of the device has a sliding cavity, in which a movable plate is slidably arranged. Two sets of symmetrical connecting frames are installed on the movable plate. A power roller is rotatably installed on the connecting frame. A micro motor is installed at one end of the connecting frame. The output shaft of the micro motor is installed on the power roller. Two symmetrical rectangular lifting holes are opened on the top inner wall of the sliding cavity and are connected to the outside. The rectangular lifting holes allow the connecting frame, micro motor and power roller to pass through.

4. The extended automatic dotter of a line board electrical tester according to claim 3, wherein: The sliding cavity is equipped with four compression springs arranged in a matrix. One end of the compression spring abuts against the inner wall of the sliding cavity, and the other end of the compression spring abuts against the movable plate.

5. The extended automatic dotter of a line board electrical tester according to claim 3, wherein: The top of the movable plate is provided with two symmetrical connecting rods, and the top of the connecting rods is installed at the bottom of the lifting plate.

6. The extended automatic dotter of a line board electrical tester according to claim 3, wherein: The sliding cavity has two symmetrical sliding holes on its top inner wall that are adapted to the connecting rod.

7. The extended automatic dotter of a line board electrical tester according to claim 1, wherein: The device is equipped with a control panel, and the hydraulic telescopic rod and the micro motor are electrically connected to the control panel.

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