Clamping device for electronic circuit board detection and use mode

Abstract

The invention relates to the field of clamping devices and use modes, in particular to a clamping device for electronic circuit board detection and a use mode, and the clamping device comprises a case lower shell, a case upper shell, a clamping assembly and a cleaning assembly; a case upper shell used for isolating the detection space is placed at the upper end of the case lower shell; a clamping assembly used for stably clamping and driving the electronic circuit board to translate is mounted at the upper end of the inner side of the case lower shell; according to the invention, the clamping assembly is designed to be in a translational design, manual intervention is not needed, seamless connection of the electronic circuit board among all processes can be ensured, repeated clamping is not needed, waiting time is reduced, damage to the electronic circuit board caused by repeated clamping can be reduced, and the detection efficiency is improved by creating a fully-enclosed detection environment and matching with the cleaning assembly. The situation that small particles in dust on the surface of the electronic circuit board possibly cover the surfaces of electronic elements and circuits of the circuit board, a probe or a sensor of detection equipment is interfered, and consequently the detection result is inaccurate is avoided.

Description

Technical Field

[0001] The present invention relates to the field of clamping devices and usage methods, and in particular to a clamping device for electronic circuit board detection and a usage method. Background Art

[0002] Electronic circuit boards (PCBs) need to be tested after production to avoid quality problems during the production process that would render the circuit boards unusable. Testing is designed to ensure the quality, functionality, and reliability of the circuit boards.

[0003] However, the existing electronic circuit board testing requires multiple process turnovers, during which the electronic circuit boards are clamped multiple times, which can easily cause damage to the electronic circuit boards. At the same time, during the turnover and testing process, the electronic circuit boards are easily exposed to dust. The tiny particles in the dust may cover the electronic components and circuit surfaces of the circuit board, causing interference to the probes or sensors of the testing equipment, resulting in inaccurate test results.

[0004] Therefore, in order to address the problem that the existing electronic circuit board testing requires multiple processes and multiple clamping, which easily causes damage to the electronic circuit board, a clamping device and usage method for electronic circuit board testing can be designed. Summary of the invention

[0005] In order to overcome the problem that the existing electronic circuit board inspection requires multiple processes and multiple clamping, which is easy to cause damage to the electronic circuit board.

[0006] The technical scheme of the present invention is as follows: a clamping device for electronic circuit board detection, comprising a chassis lower shell, a chassis upper shell, a clamping assembly, a cleaning assembly, a mechanical arm, a detector, and a conveyor belt; the upper end of the chassis lower shell is provided with a chassis upper shell for isolating the detection space; the inner side of the chassis lower shell is provided with a clamping assembly for stably clamping and driving the electronic circuit board to translate; the clamping assembly comprises a moving platform, a linkage seat, a rotating motor, a bidirectional driving mechanism, a clamping arm, and a positioning column; the lower end of the moving platform is fixedly connected with the linkage seat; the lower end of the moving platform motor frame is provided with a rotating motor; the upper end of the output shaft of the rotating motor is fixedly connected with the bidirectional driving mechanism; The upper end of the bidirectional driving mechanism is linked with a front-to-back symmetrical clamping arm; the inner wall of the clamping arm is provided with a positioning column made of rubber material; a cleaning component for quickly cleaning dust on the surface of the electronic circuit board is installed at the left end of the inner side of the lower shell of the chassis; two groups of cleaning components are provided and are symmetrically distributed front to back; the cleaning component includes an air hood, a metal air duct, soft bristles and a fan; soft bristles are installed on the side of the air hood close to the electronic circuit board; a fan is installed on the outer side of the lower shell of the chassis; the fan and the air hood are connected through a metal air duct; a mechanical arm is arranged in the middle position of the inner side of the lower shell of the chassis; a detector is installed on the side of the mechanical arm close to the electronic circuit board; a conveyor belt is installed on the right side of the inner side of the lower shell of the chassis.

[0007] Preferably, a lifting cylinder group for controlling the opening and closing of the chassis upper shell is installed between the chassis upper shell connecting ears.

[0008] Preferably, a loading door is provided at the right end of the upper shell of the chassis to facilitate placing the electronic circuit board into the clamping assembly; and an abnormal product removal door is provided at the front end of the loading door to facilitate taking out the abnormal electronic circuit board detected.

[0009] Preferably, a guide platform is installed at the lower end of the conveyor belt; and a left-right symmetrical buffer spring support seat is provided at the lower end of the guide platform.

[0010] Preferably, a removal port is provided at the right end of the lower shell of the chassis; a storage box is slidably connected to the inner side of the removal port; and a limiting mechanism B is provided between the storage box and the lower shell of the chassis.

[0011] Preferably, the clamping assembly further includes a linear drive mechanism and a limit mechanism A; a linear drive mechanism is arranged on the inner side of the linkage seat screw sleeve; a limit mechanism A for limiting the translation trajectory of the lower shell of the chassis is arranged between the moving platform and the inner wall of the lower shell of the chassis.

[0012] A method for using a clamping device for electronic circuit board detection includes the above-mentioned clamping device for electronic circuit board detection, and the steps are as follows:

[0013] Step 1: The staff first checks the clamping components, cleaning components, mechanical arms, and detectors inside the lower shell of the chassis to ensure that the above components are in good working condition, and then starts the lifting cylinder group on the outside to drive the upper shell of the chassis to close;

[0014] Step 2: The staff opens the loading door on the side of the upper shell of the chassis and puts the electronic circuit board into the clamping assembly. The clamping assembly starts the bidirectional driving mechanism to control the clamping arm with the positioning column to move inward synchronously according to the size of the electronic circuit board, and adjusts the clamping arm of the clamping assembly so that the clamping arm can clamp both sides of the circuit board tightly and stably;

[0015] Step 3: The rotating motor of the clamping assembly adjusts the position of the electronic circuit board to make it vertically upright. The clamping assembly drives the electronic circuit board to slowly move horizontally. First, the electronic circuit board passes through the cleaning assembly. The soft bristles of the cleaning assembly sweep away the dust and impurities on the front and back of the electronic circuit board. The fan generates suction and quickly sucks away the dust swept by the soft bristles through the metal air duct and the wind collecting cover.

[0016] Step 4: The clamping assembly drives the electronic circuit board to the inspection area and stays there for 15 to 20 seconds according to the preset program. The robot arm controls the detector to flexibly inspect the electronic circuit board. During the test, the staff pays close attention to the display and output of the test equipment. If an abnormal part is encountered, it is necessary to open the abnormal product removal door and take it out after the inspection process is completed;

[0017] Step 5: Normal electronic circuit boards are translated to the upper end of the conveyor belt, unclamped, and automatically unloaded to the upper end of the conveyor belt. The conveyor belt periodically changes the direction of rotation of the conveyor belt - that is, forward and reverse rotation, so that the electronic circuit boards on the upper end of the conveyor belt fall evenly from both ends. The electronic circuits are evenly distributed on the inner side of the storage box through the guide table with a buffer spring support seat to prevent the electronic circuit boards from piling up.

[0018] Step 6: After the first phase of testing is completed, remove the storage box containing the electronic circuit boards from the removal port.

[0019] Beneficial effects of the present invention:

[0020] The present invention designs the clamping component to be a translatable design, which can drive the stably clamped electronic circuit board to pass through the cleaning area and the testing area and complete automatic unloading without manual intervention, and can ensure that the electronic circuit board is seamlessly connected between various processes without multiple clamping. It not only reduces waiting time, but also reduces the damage to the electronic circuit board caused by multiple clamping. By creating a fully enclosed detection environment with a cleaning component, dust and impurities on both sides of the electronic circuit board can be quickly and comprehensively swept away and quickly absorbed, avoiding the tiny particles in the dust on the surface of the electronic circuit board from covering the electronic components and circuit surface of the circuit board, causing interference to the probe or sensor of the detection equipment, resulting in inaccurate detection results. By periodically changing the rotation direction of the conveyor belt, the electronic circuit boards are evenly unloaded into the storage box, avoiding the electronic circuit boards from piling up on each other and causing damage to the electronic circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the clamping device and the method of use of the present invention after removing the upper shell of the chassis;

[0022] Figure 2 Shown is another three-dimensional structural schematic diagram of the clamping device and the use method of the present invention after removing the upper shell of the chassis;

[0023] Figure 3 Shown is a schematic diagram of the overall structure of the clamping device of the present invention and the method of use;

[0024] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the clamping assembly of the clamping device and the method of use of the present invention;

[0025] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the cleaning component of the clamping device and the use method of the present invention;

[0026] Figure 6 What is shown is a cross-sectional three-dimensional structural schematic diagram of the clamping device of the present invention and the method of use.

[0027] Explanation of the reference numerals: 1. lower case; 2. upper case; 3. clamping assembly; 301. moving platform; 302. linkage seat; 303. rotating motor; 304. bidirectional driving mechanism; 305. clamping arm; 306. positioning column; 307. linear driving mechanism; 308. limiting mechanism A; 4. cleaning assembly; 401. wind hood; 402. metal air duct; 403. soft brush; 404. fan; 5. mechanical arm; 6. detector; 7. conveyor belt; 10. lifting cylinder group; 11. loading door; 12. abnormal product removal door; 13. guide platform; 15. buffer spring support seat; 16. removal outlet; 17. storage box; 19. limiting mechanism B. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1-6 The present invention provides an embodiment: a clamping device for electronic circuit board detection, comprising a chassis lower shell 1, a chassis upper shell 2, a clamping assembly, a cleaning assembly, a mechanical arm 5, a detector 6, and a conveyor belt 7; the upper end of the chassis lower shell 1 is provided with a chassis upper shell 2 for isolating the detection space; the inner side of the chassis lower shell 1 is provided with a clamping assembly for stably clamping and driving the electronic circuit board to translate; the clamping assembly comprises a moving platform 301, a linkage seat 302, a rotating motor 303, a bidirectional driving mechanism 304, a clamping arm 305 and a positioning column 306; the lower end of the moving platform 301 is fixedly connected with the linkage seat 302; the lower end of the motor frame of the moving platform 301 is provided with a rotating motor 303; the upper end of the output shaft of the rotating motor 303 is fixedly connected with the bidirectional driving mechanism 304; the bidirectional The upper end of the driving mechanism 304 is linked with a front-to-back symmetrical clamping arm 305; the inner wall of the clamping arm 305 is provided with a positioning column 306 made of rubber; a cleaning component for quickly cleaning dust on the surface of the electronic circuit board is installed at the left end of the inner side of the lower shell 1 of the chassis; two groups of cleaning components are provided and are symmetrically distributed front to back; the cleaning component includes an air collecting hood 401, a metal air duct 402, soft bristles 403 and a fan 404; soft bristles 403 are installed on the side of the air collecting hood 401 close to the electronic circuit board; a fan 404 is installed on the outer side of the lower shell 1 of the chassis; the fan 404 and the air collecting hood 401 are connected through the metal air duct 402; a mechanical arm 5 is arranged in the middle position of the inner side of the lower shell 1 of the chassis; a detector 6 is installed on the side of the mechanical arm 5 close to the electronic circuit board; a conveyor belt 7 is installed on the right side of the inner side of the lower shell 1 of the chassis.

[0030] See also Figure 3In the present embodiment, a lifting cylinder group 10 for controlling the opening and closing of the upper shell 2 of the chassis is installed between the connecting ears of the upper shell 2 of the chassis, and a loading door 11 for conveniently placing the electronic circuit board into the clamping assembly is provided at the right end of the upper shell 2 of the chassis; an abnormal product removal door 12 for conveniently taking out the detected abnormal electronic circuit board is provided at the front end of the loading door 11.

[0031] See also Figure 4 In this embodiment, the clamping assembly also includes a linear drive mechanism 307 and a limiting mechanism A308; a linear drive mechanism 307 is arranged on the inner side of the screw sleeve of the linkage seat 302; a limiting mechanism A308 for limiting the translation trajectory of the lower shell 1 of the chassis is arranged between the moving platform 301 and the inner wall of the lower shell 1 of the chassis.

[0032] See also Figure 6 In this embodiment, a guide platform 13 is installed at the lower end of the conveyor belt 7; a left-right symmetrical buffer spring support seat 15 is provided at the lower end of the guide platform 13, and a removal outlet 16 is opened at the right end of the lower shell 1 of the chassis; a storage box 17 is slidably connected to the inner side of the removal outlet 16; a limiting mechanism B19 is provided between the storage box 17 and the lower shell 1 of the chassis.

[0033] A method for using a clamping device for electronic circuit board testing, the steps are as follows:

[0034] Step 1: The staff first checks the clamping assembly, cleaning assembly, mechanical arm 5, and detector 6 inside the lower shell 1 of the chassis to ensure that the above components are in good working condition, and then starts the lifting cylinder group 10 on the outside to drive the upper shell 2 of the chassis to close;

[0035] Step 2: The staff opens the insertion door 11 on the side of the upper shell 2 of the chassis, and puts the electronic circuit board into the clamping assembly. The clamping assembly starts the bidirectional driving mechanism 304 to control the clamping arm 305 with the positioning column 306 to move inward synchronously according to the size of the electronic circuit board, and adjusts the clamping arm 305 of the clamping assembly so that the clamping arm 305 can clamp both sides of the circuit board tightly and stably;

[0036] Step 3: The rotating motor 303 of the clamping assembly adjusts the position of the electronic circuit board to make it vertically upright. The clamping assembly drives the electronic circuit board to slowly translate. First, the electronic circuit board passes through the cleaning assembly. The soft bristles 403 of the cleaning assembly sweep away the dust and impurities on the front and back sides of the electronic circuit board. The fan 404 generates suction and quickly sucks away the dust swept by the soft bristles 403 through the metal air duct 402 and the wind collecting cover 401.

[0037] Step 4: The clamping assembly drives the electronic circuit board to the inspection area and stays there for 15 to 20 seconds according to the predetermined program. The robot arm 5 controls the detector 6 to flexibly inspect the electronic circuit board. During the test, the staff pays close attention to the display and output of the test equipment. If an abnormal part is encountered, it is necessary to open the abnormal product removal door 12 to take it out after the inspection process is completed;

[0038] Step 5: Normal electronic circuit boards are translated to the upper end of the conveyor belt 7, unclamped, and automatically unloaded to the upper end of the conveyor belt 7. The conveyor belt 7 periodically changes the rotation direction of the conveyor belt 7, that is, forward and reverse rotation, so that the electronic circuit boards on the upper end of the conveyor belt 7 fall evenly from both ends. The electronic circuits are evenly distributed on the inner side of the storage box 17 through the guide platform 13 with the buffer spring support seat 15 to prevent the electronic circuit boards from piling up.

[0039] Step 6: After the first phase of the inspection work is completed, the storage box 17 loaded with the electronic circuit board is pulled out from the removal port 16.

[0040] Through the above steps, by designing the clamping component into a translatable design, the electronic circuit board that is stably clamped can be driven to pass through the cleaning area and the detection area and complete automatic unloading without manual intervention, which can ensure that the electronic circuit board is seamlessly connected between various processes and does not require multiple clamping. It not only reduces waiting time, but also reduces the damage to the electronic circuit board caused by multiple clamping. By creating a fully enclosed detection environment with a cleaning component, dust and impurities on both sides of the electronic circuit board can be quickly and comprehensively swept away and quickly absorbed, avoiding the possibility that tiny particles in the dust on the surface of the electronic circuit board may cover the electronic components and circuit surface of the circuit board, causing interference to the probe or sensor of the detection equipment, resulting in inaccurate detection results. By periodically changing the rotation direction of the conveyor belt 7, the electronic circuit boards are evenly unloaded into the storage box 17, avoiding the electronic circuit boards from piling up and causing damage to the electronic circuit boards.

Claims

1. A clamping device for electronic circuit board testing, comprising a lower case (1); characterized in that: The invention also comprises an upper case shell (2), a clamping assembly, a cleaning assembly, a mechanical arm (5), a detector (6), and a conveyor belt (7); the upper end of the lower case shell (1) is provided with the upper case shell (2) for isolating the detection space; the inner side of the lower case shell (1) is provided with a clamping assembly for stably clamping and driving the electronic circuit board to translate; the clamping assembly comprises a moving platform (301), a linkage seat (302), a rotating motor (303), a bidirectional driving mechanism (304), a clamping arm (305), and a positioning column (306); the lower end of the moving platform (301) is fixedly connected with the linkage seat (302); the lower end of the motor frame of the moving platform (301) is provided with a rotating motor (303); the upper end of the output shaft of the rotating motor (303) is fixedly connected with the bidirectional driving mechanism (304); the upper end of the bidirectional driving mechanism (304) is linked with a clamping arm (305) symmetrical in front and back. The holding arm (305) is provided with a positioning column (306) made of rubber material on the inner wall of the clamping arm (305); a cleaning component for quickly cleaning dust on the surface of the electronic circuit board is installed at the left end of the inner side of the lower shell (1) of the chassis; two groups of cleaning components are provided and are symmetrically distributed front and back; the cleaning component comprises an air collecting hood (401), a metal air duct (402), soft bristles (403) and a fan (404); the air collecting hood (401) is provided with soft bristles (403) on the side close to the electronic circuit board; the fan (404) is installed on the outer side of the lower shell (1) of the chassis; the fan (404) and the air collecting hood (401) are connected through the metal air duct (402); a mechanical arm (5) is provided at the middle position of the inner side of the lower shell (1) of the chassis; a detector (6) is installed on the side of the mechanical arm (5) close to the electronic circuit board; and a conveyor belt (7) is installed on the right side of the inner side of the lower shell (1) of the chassis.

2. The clamping device for electronic circuit board testing according to claim 1, characterized in that: A lifting cylinder group (10) for controlling the opening and closing of the chassis upper shell (2) is installed between the chassis upper shell (2) connecting ears.

3. The clamping device for electronic circuit board testing according to claim 1 is characterized in that: The right end of the upper shell (2) of the chassis is provided with an insertion door (11) for facilitating the insertion of the electronic circuit board into the clamping assembly; the front end of the insertion door (11) is provided with an abnormal product removal door (12) for facilitating the removal of the detected abnormal electronic circuit board.

4. The clamping device for electronic circuit board testing according to claim 1 is characterized in that: A guide platform (13) is installed at the lower end of the conveyor belt (7); and a left-right symmetrical buffer spring support seat (15) is arranged at the lower end of the guide platform (13).

5. The clamping device for electronic circuit board testing according to claim 1 is characterized in that: A removal opening (16) is provided at the right end of the lower case (1) of the chassis; a storage box (17) is slidably connected to the inner side of the removal opening (16); and a limiting mechanism B (19) is provided between the storage box (17) and the lower case (1).

6. The clamping device for electronic circuit board testing according to claim 1, characterized in that: The clamping assembly also includes a linear drive mechanism (307) and a limiting mechanism A (308); the linear drive mechanism (307) is arranged on the inner side of the screw sleeve of the linkage seat (302); and the limiting mechanism A (308) for limiting the translation trajectory of the lower case (1) is arranged between the moving platform (301) and the inner wall of the lower case (1).

7. A method of using a clamping device for electronic circuit board testing, characterized in that The method comprises a clamping device for electronic circuit board detection according to claims 1 to 6, wherein the steps are as follows: Step 1: The staff first checks the clamping assembly, cleaning assembly, mechanical arm (5), and detector (6) inside the lower case (1) to ensure that the above components are in good working condition, and then starts the lifting cylinder group (10) on the outside to drive the upper case (2) at the upper end to close; Step 2: The staff opens the insertion door (11) on the side of the upper shell (2) of the chassis, and puts the electronic circuit board into the clamping assembly. The clamping assembly starts the bidirectional driving mechanism (304) according to the size of the electronic circuit board to control the clamping arm (305) with the positioning column (306) to move inward synchronously, and adjusts the clamping arm (305) of the clamping assembly so that the clamping arm (305) can tightly and stably clamp the two sides of the circuit board; Step 3: The rotating motor (303) of the clamping assembly adjusts the position of the electronic circuit board to make it stand vertically, and the clamping assembly drives the electronic circuit board to slowly move horizontally. First, the electronic circuit board passes through the cleaning assembly, and the soft bristles (403) of the cleaning assembly sweep away the dust and impurities on the front and back sides of the electronic circuit board. The fan (404) generates suction force and quickly sucks away the dust swept by the soft bristles (403) through the metal air duct (402) and the air collecting cover (401); Step 4: The clamping assembly drives the electronic circuit board to the inspection area and stays there for 15 to 20 seconds according to the predetermined program. The robot arm (5) controls the detector (6) to flexibly inspect the electronic circuit board. During the test, the staff closely monitors the display and output of the test equipment. If an abnormal part is encountered, it is necessary to open the abnormal product removal door (12) to remove it after the inspection process is completed; Step 5: The normal electronic circuit board is translated to the upper end of the conveyor belt (7), the clamp is released, and the electronic circuit board is automatically unloaded to the upper end of the conveyor belt (7). The conveyor belt (7) periodically changes the rotation direction of the conveyor belt (7) - that is, forward and reverse rotation, so that the electronic circuit board on the upper end of the conveyor belt (7) falls evenly from both ends. The electronic circuit passes through the guide platform (13) with a buffer spring support seat (15) and is evenly distributed on the inner side of the storage box (17), so as to prevent the electronic circuit boards from piling up. Step 6: After the first phase of the inspection work is completed, the storage box (17) loaded with the electronic circuit board is pulled out from the removal port (16).

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