A metal stripping device for electronic circuit boards

By designing an automated scraping and clamping mechanism, the problems of low stripping efficiency and safety hazards of metal components on electronic circuit boards were solved, and a highly efficient and stable metal component stripping process was achieved.

CN122298779APending Publication Date: 2026-06-30WUXI ZHONGXUN ENVIRONMENTAL PROTECTION CONTROL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUXI ZHONGXUN ENVIRONMENTAL PROTECTION CONTROL CO LTD
Filing Date
2026-05-22
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, the stripping efficiency of metal components on electronic circuit boards is low and the circuit boards are easily damaged. Manual operation poses safety hazards.

Method used

Design an electronic circuit board metal stripping device, which adopts a scraping mechanism and a clamping mechanism. The scraping blade driven by the motor automatically scrapes the metal parts, and the flexible scraping is achieved by the cooperation of the limit block and the metal spring. The clamping mechanism ensures the stable clamping of the circuit board.

Benefits of technology

It improves the stripping efficiency of metal components, reduces damage to circuit boards, enhances safety and operational stability, and adapts to the needs of circuit boards of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of electronic circuit board recycling technology, and discloses an electronic circuit board metal stripping device. A first groove is vertically formed on the top of a support plate, and two second grooves communicating with the first groove are horizontally formed inside the support plate. Inclined guide plates are fixed to the front surface of the support plate, and a scraping mechanism is installed on the top of the support plate. A clamping mechanism is installed at the front side of the guide grooves. The electronic circuit board metal stripping device provided by this invention, through the setting of a scraping mechanism, uses a first motor to drive a lead screw to rotate, causing an adjusting block and a scraper to move laterally left and right along the first and second grooves, thereby achieving automatic scraping of soldered metal components on the electronic circuit board. This replaces the traditional manual operation of holding a scraper, significantly improving stripping efficiency. Simultaneously, the front and rear positions of the scraper can be adjusted by rotating the screw, facilitating control of the scraping depth and adapting to the stripping requirements of circuit boards of different specifications.
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Description

Technical Field

[0001] This invention relates to the field of electronic circuit board recycling technology, specifically to an electronic circuit board metal stripping device. Background Technology

[0002] With the rapid pace of electronic product upgrades, a large number of waste electronic circuit boards urgently need to be processed. These circuit boards are soldered with a large number of metal components, such as capacitors, resistors, and integrated circuits. These metal components have high recycling value. When recycling waste circuit boards, it is usually necessary to remove the metal components from the circuit boards for subsequent sorting and recycling.

[0003] Currently, most metal stripping methods rely on manual operation. Operators use scrapers or similar tools to scrape away the solder joints on the circuit board one by one to remove the metal components. However, this manual stripping method has obvious shortcomings: on the one hand, the scraping efficiency is low and it is difficult to meet the needs of large-scale processing; on the other hand, it is difficult to control the force during manual operation, which can easily damage the circuit board substrate or metal components, affecting the recycling quality. In addition, long-term repetitive labor can also easily lead to operator fatigue and pose certain safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic circuit board metal stripping device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electronic circuit board metal stripping device, comprising a base, a receiving groove on the top of the base, and a support plate vertically fixed to the top of the base, a first sliding groove vertically opened on the top of the support plate, and two second sliding grooves communicating with the first sliding groove horizontally opened inside the support plate, two guide grooves horizontally opened on the front surface of the support plate, a guide plate in an inclined distribution fixed to the front surface of the support plate, a scraping mechanism installed on the top of the support plate, and a clamping mechanism installed at the front side of the guide grooves; The scraping mechanism includes a first bearing, a second bearing, and a second slider. The first and second bearings are fixedly connected to the top of a support plate. A first motor is fixedly connected to the first bearing. The drive end of the first motor passes through the first bearing and is fixedly connected to a lead screw. An adjusting block is threaded onto the lead screw. A first slider is fixedly connected to the bottom of the adjusting block. A second slider is fixedly connected to the bottom end of the first slider. A first telescopic plate is slidably embedded inside the second slider. A vertical rod is fixedly connected to the bottom of the second slider. A third slider is fixedly connected to the bottom end of the vertical rod. A second telescopic plate is slidably embedded inside the third slider. A first bracket is fixedly connected between the first and second telescopic plates. The first bracket has internal threads... A screw is connected, and one end of the screw is rotatably connected to a second bracket via a bearing. A limit groove is opened at one end of the first telescopic plate and the second telescopic plate. A T-shaped limit block is slidably connected inside the two limit grooves. A scraper is fixed between the two limit blocks. A first turntable and a second turntable are rotatably connected to the top two sides of the first telescopic plate and the bottom two sides of the second telescopic plate via bearings. A first metal spring is rotatably connected to the top of the first turntable via a pin, and one end of the first metal spring is rotatably connected to the limit block. A second metal spring is rotatably connected to the top of the second turntable via a pin, and one end of the second metal spring is rotatably connected to the limit block.

[0006] As a preferred embodiment of the present invention, both the first metal spring and the second metal spring are arc-shaped structures, and the first metal spring and the second metal spring are staggered.

[0007] As a preferred embodiment of the present invention, the second bracket is fixed between the second slider and the third slider, and the second bracket is located at the rear side of the support plate.

[0008] As a preferred embodiment of the present invention, the first slider and the upright are both slidably connected inside the first slide groove, and the second slider is adapted to the second slide groove, with the second slider slidably connected inside the second slide groove.

[0009] As a preferred embodiment of the present invention, one end of the lead screw is rotatably connected to the second bearing via a bearing, and the adjusting block is slidably connected to the top of the support plate.

[0010] In a preferred embodiment of the present invention, the clamping mechanism includes a first support, a second support, and a first transmission shaft. The first and second supports are fixedly connected to the front surface of the support plate. A second motor is fixedly connected to the first support. The drive end of the second motor passes through the first support and is fixedly connected to a first worm gear. A second worm gear is fixedly connected to one end of the first worm gear, and a first worm wheel meshes with the first worm gear. A second worm wheel meshes with the second worm gear. A first transmission shaft is fixedly embedded inside the first worm wheel. A first gear is fixedly connected to the first transmission shaft, and a first rack meshes with the top of the first gear. The second worm wheel... A second drive shaft is fixedly embedded, a second gear is fixedly connected to the second drive shaft, a second rack meshes with the top of the second gear, a first connecting rod is vertically fixed to the top of the first rack, a second connecting rod is vertically fixed to the top of the second rack, an L-shaped clamping seat is fixed to both the first and second connecting rods, two baffles are fixed to the side walls of the clamping seats, an electric push rod is fixed to the rear surface of the baffles, a clamping block is fixed to the telescopic end of the electric push rod, and a T-shaped guide block is fixed to the rear surface of both clamping seats. The guide block and the guide groove are adapted to each other and the guide block is slidably connected inside the guide groove.

[0011] As a preferred embodiment of the present invention, the first worm and the second worm have opposite thread directions, and one end of the second worm is rotatably connected to the second support via a bearing.

[0012] As a preferred embodiment of the present invention, both the first drive shaft and the second drive shaft pass through the support plate, the first drive shaft and the support plate are rotatably connected by bearings, and the second drive shaft and the support plate are rotatably connected by bearings.

[0013] As a preferred embodiment of the present invention, the first rack and the second rack are of equal length, and the tops of the first rack and the second rack are located on the same horizontal line.

[0014] As a preferred embodiment of the present invention, the two clamping seats are distributed relative to each other, the guide plate is located above the first worm and the second worm, and the bottom of the guide plate extends to the top of the receiving groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The electronic circuit board metal stripping device provided by the present invention, by setting a scraping mechanism, is driven by a first motor to rotate a lead screw, which drives an adjusting block and a scraping blade to move laterally left and right along the first and second slide grooves, thereby realizing automatic scraping of soldered metal components on the electronic circuit board, replacing the traditional manual operation of holding a scraper, significantly improving the stripping efficiency. At the same time, the front and rear positions of the scraping blade can be adjusted by rotating the screw, which makes it easy to control the scraping depth and adapt to the stripping requirements of circuit boards of different specifications.

[0016] 2. The scraper installation structure of the present invention is ingeniously designed. The scraper is connected to the first metal spring and the second metal spring through the limiting block. When the scraper encounters the solder joint during the scraping process, the limiting block moves under force, causing the first metal spring and the second metal spring to deform and drive the first turntable and the second turntable to rotate. This allows the metal spring to accumulate elastic potential energy, thereby causing the scraper to produce a small displacement, enhancing the continuous scraping ability of the solder joint, and improving the peeling effect and adaptability.

[0017] 3. This invention, by setting up a clamping mechanism, adopts a design with the first worm and the second worm rotating in opposite directions, and cooperates with the first worm wheel, the second worm wheel and the gear rack transmission to realize the relative or opposite movement of the two clamping seats, which can quickly clamp electronic circuit boards of different sizes and ensure that they remain stable during the scraping process. At the same time, the electric push rod drives the clamping block to further press the circuit board, which enhances the clamping stability and prevents scraping deviation or damage caused by loosening. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an electronic circuit board metal stripping device according to the present invention. Figure 2 This is a rear view of an electronic circuit board metal stripping device according to the present invention. Figure 3 This is a schematic diagram of the support plate in an electronic circuit board metal stripping device of the present invention; Figure 4 This is a schematic diagram of the scraping mechanism in an electronic circuit board metal stripping device of the present invention; Figure 5 for Figure 4 Enlarged view of region A in the middle; Figure 6 This is a schematic diagram of the clamping mechanism in an electronic circuit board metal stripping device of the present invention.

[0019] In the diagram: 1. Base; 11. Storage slot; 2. Support plate; 21. First slide groove; 22. Second slide groove; 23. Guide groove; 3. Guide plate; 4. Scraping mechanism; 41. First shaft seat; 411. First motor; 412. Lead screw; 413. Adjusting block; 414. First slider; 42. Second shaft seat; 43. Second slider; 431. First telescopic plate; 432. Limiting groove; 44. Upright; 45. Third slider; 451. Second telescopic plate; 46. First bracket; 461. Screw; 462. Second bracket; 47. Limiting block; 471. Scraper; 48. First turntable; 4 81. First metal spring; 49. Second turntable; 491. Second metal spring; 5. Clamping mechanism; 51. First support; 511. Second motor; 512. First worm gear; 513. Second worm gear; 514. First worm wheel; 515. Second worm wheel; 52. Second support; 53. First drive shaft; 531. First gear; 532. First rack; 54. Second drive shaft; 541. Second gear; 542. Second rack; 55. First connecting rod; 56. Second connecting rod; 57. Clamping seat; 58. Baffle; 581. Electric push rod; 582. Clamping block; 59. Guide block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 6 The present invention provides a metal stripping device for electronic circuit boards, including a base 1, a storage groove 11 on the top of the base 1, and a support plate 2 vertically fixed to the top of the base 1. A first sliding groove 21 is vertically opened on the top of the support plate 2, and two second sliding grooves 22 communicating with the first sliding groove 21 are horizontally opened inside the support plate 2. Two guide grooves 23 are horizontally opened on the front surface of the support plate 2. A guide plate 3 with an inclined distribution is fixed to the front surface of the support plate 2, and a scraping mechanism 4 is installed on the top of the support plate 2. A clamping mechanism 5 is installed on the front side of the guide grooves 23.

[0022] The scraping mechanism 4 includes a first bearing 41, a second bearing 42, and a second slider 43. The first bearing 41 and the second bearing 42 are fixedly connected to the top of the support plate 2. A first motor 411 is fixedly connected to the first bearing 41. The drive end of the first motor 411 passes through the first bearing 41 and is fixedly connected to a lead screw 412. An adjusting block 413 is threaded onto the lead screw 412. A first slider 414 is fixedly connected to the bottom of the adjusting block 413. A second slider 43 is fixedly connected to the bottom end of the first slider 414. A first telescopic plate 431 is slidably embedded inside the second slider 43. A vertical rod 44 is fixedly connected to the bottom of the second slider 43. A third slider 45 is fixedly connected to the bottom end of the vertical rod 44. A second telescopic plate 451 is slidably embedded inside the third slider 45. A first bracket 46 is fixedly connected between the first telescopic plate 431 and the second telescopic plate 451. The internal threaded connection is a screw 461. One end of the screw 461 is rotatably connected to a second bracket 462 via a bearing. One end of the first telescopic plate 431 and the second telescopic plate 451 are both provided with a limiting groove 432. T-shaped limiting blocks 47 are slidably connected inside the two limiting grooves 432. A scraper 471 is fixed between the two limiting blocks 47. The top two sides of the first telescopic plate 431 and the bottom two sides of the second telescopic plate 451 are rotatably connected to a first turntable 48 and a second turntable 49 via bearings. The top of the first turntable 48 is rotatably connected to a first metal spring 481 via a pin. One end of the first metal spring 481 is rotatably connected to the limiting block 47. The top of the second turntable 49 is rotatably connected to a second metal spring 491 via a pin. One end of the second metal spring 491 is rotatably connected to the limiting block 47.

[0023] The motion mechanism of the scraper 471 during operation is as follows: When the first motor 411 drives the lead screw 412 to rotate, causing the scraper 471 to move laterally along the surface of the circuit board, the cutting edge of the scraper 471 contacts the solder joint of the welded metal component. Due to the raised surface and high hardness of the solder joint, the scraper 471 will be subjected to a reaction force from the solder joint during the lateral movement. This reaction force is transmitted backward along the front end of the scraper 471, pushing the limiting block 47 to slide backward in the limiting groove 432. When the limiting block 47 moves backward, it will pull the first metal spring 481 and the second metal spring 491 that are rotatably connected to it, causing them to undergo elastic bending deformation. Since the first metal spring 481 and the second metal spring 491 are both arc-shaped structures and staggered, they do not interfere with each other during the deformation process, and respectively drive the first turntable 48 and the second turntable 49. The first and second metal springs 481 and 491 generate a small rotation around their respective bearing centers. At this time, the first metal spring 481 and the second metal spring 491 convert kinetic energy into elastic potential energy and store it. When the scraper 471 passes over the solder joint or scrapes it off, the reaction force of the solder joint on the scraper 471 disappears. The first metal spring 481 and the second metal spring 491 release elastic potential energy, driving the limit block 47 and the scraper 471 to reset forward. Thus, during the lateral movement, the scraper 471 generates a small reciprocating motion of retraction and reset for each solder joint, forming a pulse-like scraping action. This motion mechanism allows the scraper 471 to avoid forcibly squeezing when it encounters a solder joint, but to achieve continuous and flexible scraping of the solder joint through elastic avoidance and rapid reset. This avoids hard damage to the circuit board substrate and improves the stripping efficiency and reliability of the solder joint.

[0024] The clamping mechanism 5 includes a first support 51, a second support 52, and a first drive shaft 53. The first support 51 and the second support 52 are fixedly connected to the front surface of the support plate 2. A second motor 511 is fixedly connected to the first support 51. The drive end of the second motor 511 passes through the first support 51 and is fixedly connected to a first worm 512. A second worm 513 is fixedly connected to one end of the first worm 512. A first worm wheel 514 meshes with the first worm 512, and a second worm wheel 515 meshes with the second worm 513. The first drive shaft 53 is fixedly embedded inside the first worm wheel 514. A first gear 531 is fixedly connected to the first drive shaft 53, and a first rack 53 meshes with the top of the first gear 531. 2. A second drive shaft 54 ​​is fixedly embedded inside the second worm gear 515. A second gear 541 is fixedly connected to the second drive shaft 54. A second rack 542 meshes with the top of the second gear 541. A first connecting rod 55 is vertically fixed to the top of the first rack 532. A second connecting rod 56 is vertically fixed to the top of the second rack 542. An L-shaped clamping seat 57 is fixed to both the first connecting rod 55 and the second connecting rod 56. Two baffles 58 are fixed to the side wall of the clamping seat 57. An electric push rod 581 is fixed to the rear surface of the baffle 58. A clamping block 582 is fixed to the telescopic end of the electric push rod 581. A T-shaped guide block 59 is fixed to the rear surface of both clamping seats 57.

[0025] Furthermore, both the first metal spring 481 and the second metal spring 491 are arc-shaped structures, and the first metal spring 481 and the second metal spring 491 are staggered. The arc-shaped structure makes the metal springs more prone to elastic deformation when subjected to force, while the staggered distribution ensures that the two sets of metal springs do not interfere with each other during deformation and can work together to push the limiting block 47 to move.

[0026] Furthermore, the second bracket 462 is fixed between the second slider 43 and the third slider 45, and the second bracket 462 is located at the rear side of the support plate 2. Fixing the second bracket 462 between the second slider 43 and the third slider 45 makes it a stable support structure connecting the first telescopic plate 431 and the second telescopic plate 451.

[0027] Furthermore, the first slider 414 and the upright rod 44 are both slidably connected inside the first slide groove 21, and the second slider 43 is adapted to the second slide groove 22. The second slider 43 is slidably connected inside the second slide groove 22, which ensures the stability and trajectory accuracy of the scraper 471 during the movement process, prevents deviation or shaking during the scraping process, and improves the peeling quality.

[0028] Furthermore, one end of the lead screw 412 is rotatably connected to the second bearing 42 via a bearing, and the adjusting block 413 is slidably connected to the top of the support plate 2. Both ends of the lead screw 412 are supported by the first bearing 41 and the second bearing 42, and the adjusting block 413 slides on the top of the support plate 2, forming a stable transmission system.

[0029] Furthermore, the guide block 59 and the guide groove 23 are adapted to each other, and the guide block 59 is slidably connected inside the guide groove 23 to ensure that the clamping seat 57 remains horizontal and stable during movement, avoids clamping deviation, and improves the accuracy and reliability of clamping.

[0030] Furthermore, the threads of the first worm 512 and the second worm 513 are opposite in direction, and one end of the second worm 513 is rotatably connected to the second support 52 through a bearing, realizing the synchronous opening and closing of the clamping seat 57, improving the clamping efficiency and centering accuracy, and is suitable for the clamping requirements of circuit boards of different sizes.

[0031] Furthermore, both the first drive shaft 53 and the second drive shaft 54 ​​pass through the support plate 2. The first drive shaft 53 and the support plate 2 are rotatably connected by bearings, and the second drive shaft 54 ​​and the support plate 2 are rotatably connected by bearings, which ensures the smooth rotation of the first gear 531 and the second gear 541 and improves the response speed and clamping accuracy of the clamping mechanism 5.

[0032] Furthermore, the lengths of the first rack 532 and the second rack 542 are equal, and the tops of the first rack 532 and the second rack 542 are located on the same horizontal line, so that the two clamping seats 57 always remain symmetrical during movement, avoiding clamping deviation caused by asynchrony and improving clamping stability.

[0033] Furthermore, the two clamping seats 57 are distributed relative to each other, and the guide plate 3 is located above the first worm 512 and the second worm 513. The bottom of the guide plate 3 extends to the top of the collection groove 11, realizing the automatic collection of metal parts after stripping, avoiding manual picking, and improving work efficiency and safety.

[0034] Working principle: The operator first places the electronic circuit board to be processed between the two clamping seats 57, and starts the second motor 511. The second motor 511 drives the first worm gear 512 to rotate. Since the first worm gear 512 and the second worm gear 513 are fixedly connected and rotate in opposite directions, the first worm wheel 514 and the second worm wheel 515 rotate in opposite directions. The first worm wheel 514 drives the first transmission shaft 53 and the first gear 531 to rotate, and the second worm wheel 515 drives the second transmission shaft 54 ​​and the second gear 541 to rotate, thereby driving the first rack 532 and the second rack 542 to move relative to each other. The first rack 532 drives the left clamping seat 57 through the first connecting rod 55, and the second rack 542 drives the right clamping seat 57 through the second connecting rod 56. 7. Move the two clamping seats 57 toward each other until the baffle 58 on the inner side of the clamping seat 57 contacts the edge of the circuit board. Then, activate the electric push rod 581 to push the clamping block 582 backward, further pressing the circuit board onto the clamping seat 57 to complete the clamping and fixing. Next, according to the position of the metal components and the height of the solder joints on the circuit board, the operator can rotate the screw 461. The screw 461 is threadedly connected to the first bracket 46, and its end is connected to the second bracket 462 through a bearing. When the screw 461 is rotated, the first bracket 46 drives the first telescopic plate 431 and the second telescopic plate 451 to move back and forth along the direction of the limiting groove 432, thereby adjusting the back and forth distance between the scraper 471 and the circuit board and controlling the scraping depth. Start the first motor 4. 11. The first motor 411 drives the lead screw 412 to rotate. The lead screw 412 drives the adjusting block 413 to slide along the top of the support plate 2. The adjusting block 413 drives the second slider 43 to move laterally along the second slide groove 22 through the first slider 414. At the same time, the upright 44 and the third slider 45 move synchronously with the first slider 414 along the first slide groove 21, thereby realizing the lateral movement of the scraping blade 471 along the surface of the circuit board to scrape the metal components soldered on the circuit board. During the scraping process, when the scraping blade 471 contacts the solder joint, the resistance of the solder joint causes the scraping blade 471 to be subjected to a reverse force, pushing the limiting block 47 to move backward along the limiting groove 432. When the limiting block 47 moves, it drives the first metal spring 481 and the first metal spring 481 rotatably connected to it to move laterally. The second metal spring 491 undergoes elastic deformation, simultaneously driving the first turntable 48 and the second turntable 49 to rotate. During the deformation process, the metal spring accumulates elastic potential energy. When the scraper 471 passes over the solder joint or the solder joint is scraped off, the metal spring releases its elastic potential energy, causing the limit block 47 and the scraper 471 to reset, forming a small-amplitude reciprocating movement, enhancing the continuous scraping ability of the solder joint and improving the peeling effect. The scraped metal parts slide down along the inclined guide plate 3 and finally fall into the collection groove 11 at the top of the base 1 for automatic collection. After scraping is completed, the second motor 511 rotates in the opposite direction, and the two clamping seats 57 move in opposite directions, releasing the processed circuit board. The operator can then remove the circuit board and proceed to the next round of work.

[0035] Although embodiments of the 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 invention.

Claims

1. A metal stripping device for electronic circuit boards, comprising a base (1), characterized in that, The base (1) has a storage groove (11) on its top, and a support plate (2) is vertically fixed to the top of the base (1). The support plate (2) has a first sliding groove (21) vertically on its top, and two second sliding grooves (22) communicating with the first sliding groove (21) are horizontally opened inside the support plate (2). Two guide grooves (23) are horizontally opened on the front surface of the support plate (2). A guide plate (3) with an inclined distribution is fixed to the front surface of the support plate (2). A scraping mechanism (4) is installed on the top of the support plate (2), and a clamping mechanism (5) is installed on the front side of the guide groove (23). The scraping mechanism (4) includes a first bearing (41), a second bearing (42), and a second slider (43). The first bearing (41) and the second bearing (42) are fixedly connected to the top of the support plate (2). A first motor (411) is fixedly connected to the first bearing (41). The drive end of the first motor (411) passes through the first bearing (41) and is fixedly connected to a lead screw (412). An adjusting block (413) is threaded onto the lead screw (412). A first slider (413) is fixedly connected to the bottom of the adjusting block (413). A slider (414) is provided. A second slider (43) is fixedly connected to the bottom end of the first slider (414). A first telescopic plate (431) is slidably embedded inside the second slider (43). A vertical rod (44) is fixedly connected to the bottom of the second slider (43). A third slider (45) is fixedly connected to the bottom end of the vertical rod (44). A second telescopic plate (451) is slidably embedded inside the third slider (45). A first bracket (46) is fixedly connected between the first telescopic plate (431) and the second telescopic plate (451). The first bracket (46) is internally threaded with a screw (461). One end of the screw (461) is rotatably connected to the second bracket (462) via a bearing. Limiting grooves (432) are provided at one end of both the first telescopic plate (431) and the second telescopic plate (451). T-shaped limiting blocks (47) are slidably connected inside both limiting grooves (432). A scraper (471) is fixed between the two limiting blocks (47). The top sides of the first telescopic plate (431) and... The bottom sides of the second telescopic plate (451) are rotatably connected to the first turntable (48) and the second turntable (49) via bearings. The top of the first turntable (48) is rotatably connected to the first metal spring (481) via a pin. One end of the first metal spring (481) is rotatably connected to the limiting block (47). The top of the second turntable (49) is rotatably connected to the second metal spring (491) via a pin. One end of the second metal spring (491) is rotatably connected to the limiting block (47).

2. The electronic circuit board metal stripping device according to claim 1, characterized in that, The first metal spring (481) and the second metal spring (491) are both arc-shaped structures, and the first metal spring (481) and the second metal spring (491) are staggered.

3. The electronic circuit board metal stripping device according to claim 1, characterized in that, The second bracket (462) is fixed between the second slider (43) and the third slider (45), and the second bracket (462) is located on the rear side of the support plate (2).

4. The electronic circuit board metal stripping device according to claim 1, characterized in that, The first slider (414) and the upright (44) are both slidably connected inside the first slide groove (21), and the second slider (43) is adapted to the second slide groove (22). The second slider (43) is slidably connected inside the second slide groove (22).

5. The electronic circuit board metal stripping device according to claim 1, characterized in that, One end of the lead screw (412) is rotatably connected to the second bearing (42) via a bearing, and the adjusting block (413) is slidably connected to the top of the support plate (2).

6. The electronic circuit board metal stripping device according to claim 1, characterized in that, The clamping mechanism (5) includes a first support (51), a second support (52), and a first drive shaft (53). The first support (51) and the second support (52) are fixedly connected to the front surface of the support plate (2). A second motor (511) is fixedly connected to the first support (51). The drive end of the second motor (511) passes through the first support (51) and is fixedly connected to a first worm (512). A second worm (513) is fixedly connected to one end of the first worm (512). A first worm wheel (514) meshes with the first worm (512), and a second worm wheel (515) meshes with the second worm (513). The first drive shaft (53) is fixedly embedded inside the first worm wheel (514). A first gear (531) is fixedly connected to the first drive shaft (53). A first rack (532) meshes with the top of the first gear (531). The second worm wheel (515) is fixedly embedded inside the first drive shaft (53). There is a second drive shaft (54), a second gear (541) is fixedly connected to the second drive shaft (54), a second rack (542) is meshed with the top of the second gear (541), a first connecting rod (55) is vertically fixedly connected to the top of the first rack (532), a second connecting rod (56) is vertically fixedly connected to the top of the second rack (542), an L-shaped clamping seat (57) is fixedly connected to both the first connecting rod (55) and the second connecting rod (56), two baffles (58) are fixedly connected to the side wall of the clamping seat (57), an electric push rod (581) is fixedly connected to the rear surface of the baffle (58), a clamping block (582) is fixedly connected to the telescopic end of the electric push rod (581), and a T-shaped guide block (59) is fixedly connected to the rear surface of both clamping seats (57). The guide block (59) is adapted to the guide groove (23), and the guide block (59) is slidably connected inside the guide groove (23).

7. The electronic circuit board metal stripping device according to claim 6, characterized in that, The first worm (512) and the second worm (513) have opposite thread directions, and one end of the second worm (513) is rotatably connected to the second support (52) through a bearing.

8. The electronic circuit board metal stripping device according to claim 6, characterized in that, The first drive shaft (53) and the second drive shaft (54) both pass through the support plate (2). The first drive shaft (53) and the support plate (2) are rotatably connected by bearings, and the second drive shaft (54) and the support plate (2) are rotatably connected by bearings.

9. The electronic circuit board metal stripping device according to claim 6, characterized in that, The first rack (532) and the second rack (542) are of equal length, and the tops of the first rack (532) and the second rack (542) are on the same horizontal line.

10. The electronic circuit board metal stripping device according to claim 6, characterized in that, The two clamping seats (57) are distributed relative to each other, and the guide plate (3) is located above the first worm (512) and the second worm (513). The bottom of the guide plate (3) extends to the top of the receiving groove (11).