Equipment for detecting film tearing completion of circuit board

Abstract

The invention relates to the technical field of electrical variable detection, in particular to equipment for detecting film tearing completion of a circuit board. Comprising a processing table; the transverse frame is fixedly connected to the top of the machining table; the first electric push rod is fixedly connected to the transverse frame; the mounting seat is connected to the transverse frame in a sliding manner and is fixed with the rod end of the first electric push rod; the conductive discs are fixedly arranged at two ends of the mounting seat; the probes are fixedly mounted and densely distributed at the bottoms of the conductive plates; the electric connecting wire is fixedly connected in the mounting seat; the power supply is fixedly connected to the mounting seat; and the indicating lamp is fixedly connected to the power supply. Through a contact type control mode, the single detection period of the circuit board is shortened, the detection efficiency is greatly improved, manual intervention in the detection process is not needed, and the method is suitable for rapid screening in a batch production scene; detection is realized through physical feedback of the conduction state of a circuit loop, and the judgment result is accurate and reliable; and a general control center is used for recording data, so that the whole-course tracing of the detection process is realized.

Description

Technical Field

[0001] This invention relates to the field of electrical variable detection technology, and in particular to a device for detecting the completion of film removal on a circuit board. Background Technology

[0002] The circuit board manufacturing process mainly includes design preparation, substrate pretreatment, pattern transfer, etching, drilling, surface treatment, solder mask and silkscreen printing, and shape processing and testing. In the above process, after the copper foil surface of the circuit board is pretreated by cleaning and micro-etching, a high-quality transparent protective film is usually applied. Its main function is to prevent the circuit pattern from being scratched by hard objects during subsequent handling, storage or processing operations, and to isolate it from the air to avoid oxidation of the copper surface, thereby ensuring the good quality of the substrate and the processing effect of subsequent processes.

[0003] In the critical etching process, it is necessary to ensure that the transparent protective film has been removed. If the protective film is not removed, it will hinder the full contact between the etching solution and the copper foil, resulting in abnormal circuit etching, product scrap, and waste of resources. Therefore, the industry has introduced a visual inspection system to solve the problem of determining whether the film has been successfully removed from the circuit board.

[0004] However, because the protective film to be inspected is transparent or semi-transparent, its optical contrast with the exposed copper foil or substrate background is extremely low, making it difficult to form effective image features under conventional light conditions. This results in problems such as low inspection efficiency and high false judgment rate in existing technologies, requiring operators to frequently review and intervene in the inspection results, which restricts the overall cycle time and processing efficiency of the production line and makes it difficult to achieve a truly fully automated production closed loop. Summary of the Invention

[0005] To address the aforementioned deficiencies in the prior art, this invention provides a device for accurately detecting the completion of film removal on circuit boards, aiming to improve the accuracy and efficiency of the detection results.

[0006] The technical solution of the present invention is: a device for detecting the completion of film removal on a circuit board, comprising: a processing table, on which a central control center is integrated; A crossbar fixedly connected to the top of the processing table; A first electric push rod is fixedly connected to the crossbeam and is electrically connected to the central control center; A mounting base that is slidably connected to the crossbar is fixed to the rod end of the first electric push rod; Conductive disks fixedly mounted at both ends of the mounting base; Probes are fixedly installed and densely distributed at the bottom of each conductive pad, used to contact the surface of the circuit board to form a conductive path. The electrical wiring is fixedly connected within the mounting base and is electrically connected to the probes on both conductive pads. A power supply is fixedly connected to the mounting base, and the power supply is electrically connected to the electrical wiring and the power supply is connected to the electrical signal of the central control center; And an indicator light fixedly connected to the power supply, which is arranged in series with the power supply, and the indicator light is connected to the power supply and lights up only when the power supply, probe, electrical wiring and circuit board together form a complete circuit.

[0007] In one embodiment, the conductive pad is assembled and fixed to the mounting base and the electrical wiring to adapt to the actual size of the circuit board and ensure that the area covered by the replaced conductive pad is not less than 60% of the total area of ​​the circuit board.

[0008] In one embodiment, the device further includes: a first transport roller rotatably connected to the processing table, which is arranged in two rows along the horizontal longitudinal direction of the processing table and symmetrically distributed about the longitudinal center line of the processing table. The starting section of each row of first transport rollers is designed with an inclination, and the inclination direction is at an angle to the horizontal direction. The first transport rollers transport the circuit board toward the center line position of the processing table by cooperating with the inclination structure in their rotation direction. The center line position between the two rows of first transport rollers coincides with the center line position between the two conductive disks. And a first drive assembly disposed between the first transport rollers for driving the first transport rollers to rotate.

[0009] In one embodiment, the first driving component includes: a frame fixedly connected to both sides of the processing table; A rotating shaft is mounted on the frame, and the mounting shafts correspond one-to-one with the first transport rollers, arranged in two rows. The axis of the first transport roller will pass through the axis of its corresponding mounting shaft. A bevel gear set is provided between each mounting shaft and its corresponding first conveyor roller. It consists of two meshing bevel gears, one of which is fixed coaxially with the mounting shaft and the other is fixed coaxially with the first conveyor roller. The first transmission wheel set is disposed between adjacent mounting shafts and consists of two transmission wheels. The two transmission wheels are respectively fixed coaxially to the two adjacent mounting shafts. A set of the first transmission wheel set is disposed between the mounting shafts at the two outermost ends. A first transmission belt is wound between two transmission wheels in each group of first transmission wheel sets; And a first motor fixedly connected to the processing table, the output end of which is coaxially fixed with one of the mounting shafts.

[0010] In one embodiment, the device further includes: a rotary disk rotatably connected to the processing table, which is located downstream of the first transport roller in the transport direction; Rotate the second transport roller connected to the rotary disk; The second transmission wheel assembly, which is disposed between two adjacent second transport rollers, consists of two transmission wheels, which are respectively fixed coaxially to the two adjacent second transport rollers. A second transmission belt is wound between the two transmission wheels of each second transmission wheel set; A second motor is fixedly connected to the rotating disk and is electrically connected to the central control center. A set of second transmission wheels and a second transmission belt are provided between the output end of the second motor and one of the second transport rollers. One of the transmission wheels of the second transmission wheels is fixed to the output end of the second motor, and the other is fixed coaxially with the second transport roller. And a second drive assembly mounted on the processing table for driving the rotary table to rotate.

[0011] In one embodiment, the second drive component includes: a toothed disc fixedly connected to the bottom of the rotating disk; Mounting strips are fixedly connected to the bottom of the processing table; A rack is slidably connected to the mounting strip, which meshes with the gear plate; And a second electric push rod fixedly connected to the mounting strip, the end of which is fixed to the rack, and the second electric push rod is electrically connected to the central control center.

[0012] In one embodiment, the device further includes: a control lever, with the transport direction of the first transport roller as a reference, one mounting shaft on each side of the downstream position of the crossbeam designated as mounting shaft a, and the control levers respectively fitted onto the two mounting shafts a, wherein the control levers and the mounting shafts a are capable of relative sliding and rotation. In the two sets of first transmission wheel groups corresponding to the mounting shaft a, the transmission wheel on the side connected to the first motor is named transmission wheel a, and the other is named transmission wheel b. The control lever is movablely engaged with transmission wheel a, and the control lever and transmission wheel a can slide and rotate relative to each other. The control lever and transmission wheel b form a sliding engagement through the limiting groove, allowing only relative sliding between the control lever and transmission wheel b. The bevel gear of the bevel gear set connected to the mounting shaft a is named bevel gear a. Bevel gear a is rotatably engaged with the mounting shaft a through a connecting ring, allowing only relative rotation between bevel gear a and the mounting shaft a. Bevel gear a and the control lever are slidably engaged through a limit groove, allowing only relative sliding between the control lever and bevel gear a. Both drive wheel a and drive wheel b are provided with slots; A sliding block connected to the control lever is used to cooperate with the slot, and the block has an arc-shaped contact surface; A return spring is fixedly connected between the locking block and the control lever; Mounting rods fixedly connected to both sides of the crossbar; And transmission rods that are slidably connected to two mounting rods respectively. The upper end of the transmission rod is fixed to the mounting base, and the lower end rotates in cooperation with its corresponding control rod.

[0013] In one embodiment, the surfaces of drive wheel a and drive wheel b are provided with rolling elements, so that drive wheel a and drive wheel b make rolling contact with each other and with the frame.

[0014] Beneficial effects: 1. This invention shortens the single inspection cycle of circuit boards through a contact-type control method, greatly improving inspection efficiency, and eliminates the need for manual intervention in the inspection process, making it suitable for rapid screening in mass production scenarios; it achieves detection through physical feedback of the circuit loop conduction status, avoiding misjudgments caused by fatigue and experience differences during manual inspection, resulting in accurate and reliable judgments and effectively reducing the risk of defective products leaving the site; using a central control center for data recording enables full traceability of the inspection process, aiding in production quality control.

[0015] 2. This invention ensures the stability of the position in subsequent precise contact testing operations by accurately moving the circuit board directly below the conductive disk, effectively improving the accuracy of the testing process; the entire process of oriented and centered conveying of the circuit board is smooth and continuous, requiring no additional manual intervention to adjust the position, realizing the automated conveying of the circuit board with oriented and precise positioning, and achieving an overall improvement in work efficiency.

[0016] 3. By flexibly switching the transport direction of the second transport roller and combining the results feedback from the central control center, the present invention can accurately separate coated and uncoated circuit boards, meet the classification and processing requirements, realize the continuity of the post-inspection processing flow, and further improve the overall work efficiency.

[0017] 4. Through the linkage design between the transmission rod and the control rod, the transportation and inspection process of the circuit board is automatically matched without manual intervention, thereby improving production efficiency and operational accuracy. By adopting a clutch-type design of card blocks and slots to control the start and stop of the first transport roller, instead of directly controlling the first motor switch, the wear and failure risk of the first motor can be reduced, extending the service life of the invention. It will also avoid energy consumption fluctuations during the start and stop of the first motor, saving energy while ensuring the stability of the circuit system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram showing the positional relationship between the mounting base, conductive disk, probe, and indicator light in this invention.

[0020] Figure 3 This is a cross-sectional view showing the connection relationship between the conductive disk, probe, electrical wiring, and power supply in this invention.

[0021] Figure 4 This is a top view showing the arrangement of the two rows of first transport rollers in this invention.

[0022] Figure 5 This is a schematic diagram showing the connection relationship between the first transport roller and the first drive assembly in this invention.

[0023] Figure 6 This is a top view showing the relationship between the axis of the first transport roller and the axis of the mounting shaft in this invention.

[0024] Figure 7 This is a schematic diagram showing the positional relationship of the second transport roller in this invention.

[0025] Figure 8 This is a cross-sectional view showing the connection relationship between the second transport roller and the second drive assembly in this invention.

[0026] Figure 9 This is a schematic diagram showing the positional relationship between the control lever and the mounting shaft a in this invention.

[0027] Figure 10 This is a cross-sectional view showing the positional relationship of the control lever relative to transmission wheel a and transmission wheel b before and after sliding in this invention.

[0028] Figure 11 This is a schematic diagram showing the connection relationship between the mounting base, control lever, and transmission rod in this invention.

[0029] The diagram is labeled as follows: 101-processing table, 102-crossbar, 103-frame, 201-first electric push rod, 202-mounting base, 203-conductive disk, 204-probe, 205-electrical wiring, 206-power supply, 207-indicator light, 301-first transport roller, 302-mounting shaft, 302a-mounting shaft a, 303-bevel gear set, 303a-bevel gear a, 303b-connecting ring, 304-first transmission wheel set, 304a-transmission wheel a, 30 4b-Transmission wheel b, 305-First transmission belt, 306-First motor, 401-Rotating disk, 402-Second transport roller, 403-Second transmission wheel set, 404-Second transmission belt, 405-Second motor, 406-Gear disc, 407-Mounting strip, 408-Rack, 409-Second electric push rod, 501-Control lever, 501a-Limit groove, 502-Card slot, 503-Card block, 504-Reset spring, 505-Mounting rod, 506-Transmission rod. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Example: A device for detecting the completion of film removal on a circuit board, see reference. Figures 1-3The system includes: a processing table 101, which integrates a central control center for overall operation of the equipment, responsible for coordinating and controlling the operation of various components; a crossbeam 102 fixedly installed on the top of the processing table 101; frame 103 fixedly installed on the left and right sides of the processing table 101; a first electric push rod 201 fixedly installed on the crossbeam 102, which is electrically connected to the central control center; a mounting base 202 slidably installed on the crossbeam 102, which is fixed to the rod end of the first electric push rod 201, and the vertical movement of the mounting base 202 is controlled by the first electric push rod 201; conductive disks 203 fixedly installed at both ends of the mounting base 202, which are assembled and fixedly fixed to the mounting base 202 to adapt to the actual size of the circuit board, ensuring that the area covered by the replaced conductive disk 203 is not less than 60% of the total area of ​​the circuit board; and a fixed and tightly installed... The probes 204, located at the bottom of each conductive disk 203, are used to contact the circuit board surface during testing to form a conductive path. The electrical wires 205, fixedly installed in the mounting base 202, are electrically connected to the probes 204 on both conductive disks 203. The electrical wires 205 are assembled and fixed to the conductive disks 203, for example, by a contact-type electrical conduction mechanical bayonet. The power supply 206, fixedly installed on the mounting base 202, is electrically connected to the electrical wires 205 and provides power support for the entire testing circuit. The power supply 206 is connected to the aforementioned central control center for electrical signals. The indicator light 207, fixedly installed on the power supply 206, is arranged in series with the power supply 206. The indicator light 207 is connected to the power supply 206 and illuminates only when the power supply 206, probes 204, electrical wires 205, and circuit board together form a complete circuit, thus providing intuitive feedback on the conduction status of the testing circuit.

[0032] During testing, the circuit board to be tested is placed directly below the conductive disk 203. The first electric push rod 201 is activated, controlling the mounting base 202 to move downwards, causing the probes 204 to contact the copper foil on the surface of the circuit board. The densely distributed probes 204 are designed to adapt to copper foils of various shapes, sizes, and spacings on different circuit boards, such as test points, pads, and traces, thereby achieving high-precision and high-consistency electrical contact. This allows for comprehensive testing of complex circuit boards in one go, greatly improving test coverage and efficiency. At this time, if the circuit board surface is not covered with a protective film, the current output by the power supply 206 will... If a complete circuit is formed along the path of "wire 205 - probe 204 - copper foil layer of the circuit board to be tested - probe 204 on the other side - wire 205", then the indicator light 207 connected in series with the power supply 206 will be lit, visually indicating that the circuit board is in a non-coated state. If the surface of the circuit board is covered with a protective film, the probe 204 will be blocked and will not be able to directly contact the copper foil layer of the circuit board, the circuit loop will be interrupted, and the indicator light 207 will remain off, thus determining that the circuit board is in a coated state. The power supply 206 will transmit the on / off state of the circuit loop to the above-mentioned central control center in the form of a signal.

[0033] This equipment shortens the single inspection cycle of circuit boards through contact control, significantly improving inspection efficiency. It eliminates the need for manual intervention, making it suitable for rapid screening in mass production scenarios. Detection is achieved through physical feedback of circuit continuity, avoiding misjudgments caused by fatigue or experience differences during manual inspection. The results are accurate and reliable, effectively reducing the risk of defective products leaving the site. Data recording via a central control center enables full traceability of the inspection process, aiding in production quality control.

[0034] See Figure 1 and Figure 4 The equipment also includes: a first transport roller 301 rotatably mounted on the processing table 101, which is arranged in two rows along the horizontal longitudinal direction of the processing table 101 and symmetrically distributed about the longitudinal center line of the processing table 101. The starting section of each row of first transport rollers 301 is designed with an inclination, and the inclination direction is at an angle to the horizontal direction. The first transport rollers 301 transport circuit boards toward the center line position of the processing table 101 by cooperating with the rotation direction of the first transport rollers 301 and the inclination structure. The center line position between the two rows of first transport rollers 301 coincides with the center line position between the two conductive disks 203; and a first drive assembly disposed between the first transport rollers 301 for driving the first transport rollers 301 to rotate.

[0035] See Figure 1 , Figure 5 and Figure 6 The first drive assembly includes: a mounting shaft 302 rotatably mounted on the frame 103, with each mounting shaft 302 corresponding to a first transport roller 301 and arranged in two rows, the axis of the first transport roller 301 passing through the axis of its corresponding mounting shaft 302; a bevel gear set 303 disposed between each mounting shaft 302 and the corresponding first transport roller 301, consisting of two meshing bevel gears, one of which is coaxially fixed to the mounting shaft 302 and the other is coaxially fixed to the first transport roller 301; a first transmission wheel set 304 disposed between adjacent mounting shafts 302, consisting of two transmission wheels, which are coaxially fixed to the two adjacent mounting shafts 302 respectively, and a set of such first transmission wheel sets 304 is also disposed between the mounting shafts 302 at their two farthest ends; a first transmission belt 305 wound around the two transmission wheels of each set of first transmission wheel sets 304; and a first motor 306 fixedly mounted on the processing table 101, the output end of which is coaxially fixed to one of the mounting shafts 302.

[0036] The first motor 306 starts, and its output directly drives the mounting shaft 302, which is fixed coaxially with it, to rotate. All mounting shafts 302 transmit power to each other through the first transmission wheel set 304 and the first transmission belt 305. The mounting shaft 302 then transmits power to the first transport roller 301 through the bevel gear set 303, thus achieving synchronous rotation of each first transport roller 301. Therefore, after the circuit board is placed on the rotating first transport roller 301, the circuit board will be displaced along the transport direction of the first transport roller 301. During the process, the inclined first transport roller 301 provides not only the longitudinal component of the transport direction for the circuit board, but also the lateral component of the centering force. Therefore, under the action of the two rows of symmetrically inclined first transport rollers 301, the circuit board is transported in the center, thereby accurately moving to the area directly below the conductive disk 203, so as to perform accurate contact detection on the circuit board in the subsequent process, and realize the directional and positionally accurate conveying operation of the circuit board.

[0037] This equipment ensures stable positioning for subsequent precision contact testing by precisely moving the circuit board directly below the conductive disk 203, effectively improving the accuracy of the testing process. The entire process of oriented and centered conveying of the circuit board is smooth and seamless, requiring no additional manual intervention to adjust its position. This achieves automated conveying of the circuit board with precise orientation and positioning, resulting in an overall improvement in work efficiency.

[0038] See Figure 1 , Figure 7 and Figure 8 It also includes: a rotary disk 401 rotatably mounted on the processing table 101, the rotary disk 401 being located downstream of the first transport roller 301 in the transport direction; a second transport roller 402 rotatably mounted on the rotary disk 401; a second transmission wheel set 403 disposed between two adjacent second transport rollers 402, which consists of two transmission wheels, the two transmission wheels being coaxially fixed to the two adjacent second transport rollers 402 respectively; a second transmission belt 404 wound between the two transmission wheels of each second transmission wheel set 403; a second motor 405 fixedly mounted on the rotary disk 401, which is electrically connected to the aforementioned central control center, the output end of the second motor 405 and one of the second transport rollers 402 are also provided with a second transmission wheel set 403 and a second transmission belt 404, one of the transmission wheels of the second transmission wheel set 403 being fixed to the output end of the second motor 405, and the other being coaxially fixed to the second transport roller 402; and a second drive assembly disposed on the processing table 101 for driving the rotary disk 401 to rotate.

[0039] Figure 7 and Figure 8The second drive assembly includes: a geared disc 406 fixedly mounted on the bottom of the rotary disk 401; a mounting strip 407 fixedly mounted on the bottom of the processing table 101; a rack 408 slidably mounted on the mounting strip 407, which meshes with the geared disc 406; and a second electric push rod 409 fixedly mounted on the mounting strip 407, the end of which is fixed to the rack 408 to control the rack 408 to move back and forth along the mounting strip 407, thereby driving the rotary disk 401 to rotate. The second electric push rod 409 is electrically connected to the aforementioned central control center.

[0040] The second motor 405 starts, and its output directly drives the second transport roller 402, which is fixed coaxially with it, to rotate. All the second transport rollers 402 transmit power to each other through the "second transmission wheel set 403 and the second transmission belt 404", and finally realize the synchronous rotation of each second transport roller 402. The second electric push rod 409 starts, and drives the toothed disc 406 to rotate forward and backward by controlling the rack 408 to move back and forth, thereby switching the transport direction of the second transport rollers 402. Therefore, after the circuit board completes the test, the central control center can rotate the rotating disk 401 according to the result feedback, and then adjust the transport direction of the circuit board to separate the coated and uncoated circuit boards so that the circuit boards in different states can be processed in different ways.

[0041] This equipment can accurately separate coated and uncoated circuit boards by flexibly switching the transport direction of the second transport roller 402 and combining the results feedback from the central control center, thus meeting the classification and processing requirements, realizing the continuity of the post-inspection processing flow, and further improving the overall operating efficiency.

[0042] See Figure 1 , Figure 9 , Figure 10 and Figure 11It also includes: taking the transport direction of the first transport roller 301 as a reference, designating one mounting shaft 302 on each of the left and right sides downstream of the crossbeam 102 as mounting shaft a302a. Specifically, the mounting shaft a302a is fixed to the frame 103, and control levers 501 are respectively sleeved on the two mounting shafts a302a. The control levers 501 and the mounting shafts a302a can slide and rotate relative to each other; in each of the two sets of first transmission wheel groups 304 corresponding to the mounting shaft a302a, the transmission wheel on the side connected to the first motor 306 is designated as transmission wheel a304a, and the other is designated as transmission wheel b3. 04b, the control lever 501 is movably engaged with the transmission wheel a304a, allowing relative sliding and rotation between the control lever 501 and the transmission wheel a304a. The control lever 501 and the transmission wheel b304b are slidably engaged through the limiting groove 501a, allowing only relative sliding between the control lever 501 and the transmission wheel b304b. The transmission wheels a304a and b304b are rotatably mounted via shafts, and the lower one of them is rotatably mounted to the frame 103 via a bearing, thus achieving stable support. Both the surfaces of the transmission wheels a304a and b304b are provided with balls, allowing the transmission wheel a304a to rotate. Rolling contact between 304a and the transmission wheel b304b avoids transmission due to friction, and rolling contact with the frame 103 reduces frictional loss with the frame 103 while ensuring stable support. The bevel gear of the bevel gear set 303 connected to the mounting shaft a302a is named bevel gear a303a. Bevel gear a303a is rotatably engaged with the mounting shaft a302a through the connecting ring 303b, allowing only relative rotation between bevel gear a303a and the mounting shaft a302a. Bevel gear a303a and the control lever 501 form a sliding engagement through the limiting groove 501a, allowing only sliding engagement between the control lever and the control lever 501. The control lever 501 slides relative to the bevel gear a303a; both the transmission wheel a304a and the transmission wheel b304b are provided with slots 502; a locking block 503 is slidably installed on the control lever 501 to cooperate with the slot 502, and the locking block 503 is provided with an arc-shaped contact surface; a return spring 504 is fixedly installed between the locking block 503 and the control lever 501; mounting rods 505 are fixedly installed on both sides of the cross frame 102; and transmission rods 506 are slidably installed on the two mounting rods 505 respectively, with the upper end of the transmission rod 506 fixed to the mounting base 202 and the lower end rotatingly engaged with the corresponding control lever 501.

[0043] When the mounting base 202 moves downward, it moves the probe 204 to contact the circuit board. Simultaneously, the mounting base 202 controls the control lever 501 to move downward via the transmission rod 506. The downward movement of the control lever 501 causes the locking block 503 to disengage from the slot 502. At this point, the power of the first motor 306, after being transmitted to the transmission wheel a304a, cannot continue to be transmitted to the control lever 501, causing the control lever 501 to stop rotating. This cuts off the power transmission between all upstream mounting shafts 302. That is, the first transport roller 301 upstream of the crossbeam 102 immediately stops operating and stops transporting the circuit board. The circuit board located below the crossbeam 102 can then remain stationary and contact the probe 204 for testing. After the test is completed, the mounting base 202 moves upward to reset, driving the control lever 501 to move downward. As lever 501 moves upward and resets, since the second motor 405 always maintains power output and the transmission wheel a304a continues to rotate, if the slot 502 on the transmission wheel a304a is not aligned with the block 503, the block 503 will be squeezed by the transmission wheel a304a and retracted into the control lever 501 until the slot 502 and the block 503 are matched. Then, the reset spring 504 will precisely push the block 503 into the slot 502, so that the transmission wheel a304a can transmit power to the transmission wheel b304b and all the upstream mounting shafts 302 again through the control lever 501. The stationary first transport roller 301 resumes operation and transports the next circuit board to the bottom of the crossbeam 102. The cycle repeats, and the start and stop control of the circuit board transport will be automated, and the transport process will be precisely coordinated with the inspection process.

[0044] The linkage design between the transmission rod 506 and the control rod 501 enables automatic matching of the circuit board transportation and inspection process without manual intervention, thereby improving production efficiency and operational accuracy. By using a clutch-type design of the card block 503 and the card slot 502 to control the start and stop of the first transport roller 301, instead of directly controlling the switch of the first motor 306, the wear and failure risk of the first motor 306 can be reduced, extending the service life of the equipment. It will also avoid energy consumption fluctuations during the start and stop of the first motor 306, saving energy while ensuring the stability of the circuit system.

[0045] Based on the above working principles, the overall usage process of this equipment is as follows: This equipment is connected in series between the film-peeling operation and subsequent operations such as etching on the processing line. The specific layout is as follows: the transport section of the etching operation equipment is connected to the right side of the downstream end of the processing table 101, and the recovery transport equipment is connected to the left side of the downstream end of the processing table 101. At the same time, the output end of the recovery transport equipment is connected back to the loading area of ​​the film-peeling operation equipment. During operation, the circuit board after the film-tearing process is completed is transported by the film-tearing equipment to the processing table 101 of this equipment. The rotating first transport roller 301 adjusts the circuit board to the centerline position through the centering guide function and continues to transport it to the bottom of the crossbeam 102. The central control center will issue a command to control the mounting base 202 to move down, and control the probe 204 to move down to contact the circuit board for detection. During this process, the first transport roller 301 has stopped rotating through mechanical linkage to ensure that the circuit board is stationary and stable, ensuring the accuracy of the detection. After the detection is completed, the central control center controls the conductive disk 203 to rotate left and right according to the feedback detection signal. Optionally, if the circuit board is determined to have been completely delaminated, the conductive disk 203 rotates to the right, causing the circuit board to be transported by the rotating second transport roller 402 to the transport section of the etching equipment for the next etching process. If the circuit board is found to have residual film on its surface, the conductive disk 203 rotates to the left, guiding the circuit board to the recycling transport equipment. The recycling transport equipment then returns the circuit board to the delamination equipment for re-delamination. By using this equipment, the quality of circuit board delamination can be automatically detected and sorted, effectively solving the problem of incomplete delamination and ensuring that the circuit boards entering the subsequent etching process meet the process requirements.

[0046] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A device for detecting the completion of film removal on a circuit board, characterized in that, include: The processing table (101) is equipped with a central control center. A crossbeam (102) is fixedly connected to the top of the processing table (101); The first electric push rod (201) is fixedly connected to the cross frame (102) and is electrically connected to the central control center; A mounting base (202) is slidably connected to the crossbar (102) and fixed to the rod end of the first electric push rod (201); Conductive disks (203) are fixedly installed at both ends of the mounting base (202); The probes (204) are fixedly installed and densely distributed at the bottom of each conductive pad (203) to form a conductive path by contacting the surface of the circuit board; The electrical wiring (205) fixedly connected in the mounting base (202) is electrically connected to the probes (204) on the conductive disks (203) on both sides; A power supply (206) is fixedly connected to the mounting base (202), the power supply (206) is electrically connected to the electrical wiring (205), and the power supply (206) is connected to the electrical signal of the central control center; And an indicator light (207) fixedly connected to the power supply (206), which is arranged in series with the power supply (206), and the indicator light (207) is connected to the power supply (206) and lights up only when the power supply (206), probe (204), electrical wire (205) and circuit board together form a complete circuit.

2. The device for detecting the completion of circuit board film removal as described in claim 1, characterized in that, The conductive pad (203) is assembled and fixed to the mounting base (202) and the electrical wiring (205) to adapt to the actual size of the circuit board and ensure that the area covered by the replaced conductive pad (203) is not less than 60% of the total area of ​​the circuit board.

3. The device for detecting the completion of circuit board film removal as described in claim 2, characterized in that, The device further includes: a first transport roller (301) rotatably connected to the processing table (101), which is arranged in two rows along the horizontal longitudinal direction of the processing table (101) and symmetrically distributed about the longitudinal center line of the processing table (101). The starting section of each row of first transport rollers (301) is designed with an inclination, and its inclination direction is at an angle to the horizontal direction. The first transport roller (301) transports the circuit board toward the center line position of the processing table (101) by cooperating with its rotation direction and the inclination structure. The center line position between the two rows of first transport rollers (301) coincides with the center line position between the two conductive disks (203). And a first drive assembly disposed between the first transport rollers (301) for driving the first transport rollers (301) to rotate.

4. The device for detecting the completion of circuit board film removal as described in claim 3, characterized in that, The first drive component includes: a frame (103) fixedly connected to both sides of the processing table (101); A mounting shaft (302) is rotatably connected to the frame (103). The mounting shaft (302) corresponds one-to-one with the first transport roller (301) and is arranged in two columns. The axis of the first transport roller (301) will pass through the axis of its corresponding mounting shaft (302). A bevel gear set (303) is provided between each mounting shaft (302) and its corresponding first transport roller (301), which consists of two meshing bevel gears, one of which is coaxially fixed to the mounting shaft (302) and the other is coaxially fixed to the first transport roller (301); The first transmission wheel set (304) is arranged between adjacent mounting shafts (302), and consists of two transmission wheels. The two transmission wheels are coaxially fixed to the two adjacent mounting shafts (302). A set of the first transmission wheel set (304) is arranged between the mounting shafts (302) at the two ends. A first transmission belt (305) is wound around the two transmission wheels of each first transmission wheel group (304). And a first motor (306) fixedly connected to the processing table (101), the output end of which is coaxially fixed with one of the mounting shafts (302).

5. The device for detecting the completion of circuit board film removal as described in claim 4, characterized in that, The device further includes a rotary disk (401) rotatably connected to the processing table (101), which is located downstream of the first transport roller (301) in the transport direction; Rotate the second transport roller (402) connected to the rotary disk (401); The second transmission wheel set (403) is disposed between two adjacent second transport rollers (402), and consists of two transmission wheels, which are respectively coaxially fixed to the two adjacent second transport rollers (402); A second transmission belt (404) is wound between the two transmission wheels of each second transmission wheel set (403). A second motor (405) is fixedly connected to the rotating disk (401) and is electrically connected to the central control center. A set of second transmission wheel group (403) and a second transmission belt (404) are provided between the output end of the second motor (405) and one of the second transport rollers (402). One of the transmission wheels of the second transmission wheel group (403) is fixed to the output end of the second motor (405), and the other is fixed coaxially with the second transport roller (402). And a second drive assembly disposed on the processing table (101) for driving the rotary disk (401) to rotate.

6. The device for detecting the completion of film removal on a circuit board as described in claim 5, characterized in that, The second drive component includes: a geared disc (406) fixedly connected to the bottom of the rotating disk (401); Mounting strip (407) fixedly connected to the bottom of the processing table (101); A rack (408) is slidably connected to the mounting strip (407), which meshes with the gear disc (406); And a second electric push rod (409) fixedly connected to the mounting strip (407), the end of which is fixed to the rack (408), and the second electric push rod (409) is electrically connected to the central control center.

7. The device for detecting the completion of circuit board film removal as described in claim 6, characterized in that, The device further includes: a control lever (501) with the transport direction of the first transport roller (301) as a reference, and a mounting shaft (302) on each side of the downstream position of the cross frame (102) named as mounting shaft a (302a), and a control lever (501) respectively sleeved on the two mounting shafts a (302a), the control lever (501) and the mounting shaft a (302a) being able to slide and rotate relative to each other; In each of the two sets of first transmission wheel groups (304) corresponding to the mounting shaft a (302a), the transmission wheel connected to the first motor (306) is named transmission wheel a (304a), and the other is named transmission wheel b (304b). The control lever (501) is movably engaged with transmission wheel a (304a), and the control lever (501) and transmission wheel a (304a) can slide and rotate relative to each other. The control lever (501) and transmission wheel b (304b) form a sliding engagement through the limiting groove (501a), allowing only the control lever (501) and transmission wheel b (304b) to slide relative to each other. The bevel gear of the bevel gear set (303) connected to the mounting shaft a (302a) is named bevel gear a (303a). The bevel gear a (303a) is rotatably engaged with the mounting shaft a (302a) through the connecting ring (303b), allowing only relative rotation between the bevel gear a (303a) and the mounting shaft a (302a). The bevel gear a (303a) and the control lever (501) are slidably engaged through the limiting groove (501a), allowing only relative sliding between the control lever (501) and the bevel gear a (303a). Both drive wheel a (304a) and drive wheel b (304b) are provided with a slot (502); A locking block (503) is slidably connected to the control lever (501) for engaging with the slot (502), and the locking block (503) has an arc-shaped contact surface; A return spring (504) is fixedly connected between the locking block (503) and the control lever (501); Mounting rods (505) are fixedly connected to both sides of the cross frame (102); And a transmission rod (506) that is slidably connected to two mounting rods (505), the upper end of the transmission rod (506) being fixed to the mounting base (202), and the lower end being rotatably engaged with its corresponding control rod (501).

8. The device for detecting the completion of film removal on a circuit board as described in claim 7, characterized in that, Rolling elements are provided on the surfaces of drive wheel a (304a) and drive wheel b (304b) to make rolling contact between drive wheel a (304a) and drive wheel b (304b) and to make rolling contact with the frame (103).

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