An automatic trimming device for PCB circuit board production

Abstract

The present invention relates to the technical field of circuit board trimming devices, and discloses an automatic trimming device for PCB circuit board production, including a support seat, a support column fixedly provided on the upper end of the support seat, a control component provided on the outer side of the support column, a trimming component provided on the upper side of the control component, a clamping component provided on the upper end of the support column, the control component including a motor 1 fixedly mounted on the outer side of the support column, a column gear 1 fixedly provided on the outer side of the rotating shaft of the motor 1, a movable sleeve rotatably provided on the outer side of the support column, a column gear 2 fixedly provided on the lower side of the movable sleeve, a push plate fixedly provided on the upper side of the movable sleeve, a sliding sleeve fixedly provided on one side of the movable sleeve, and a cylinder fixedly provided on the lower end of the sliding sleeve. The automatic trimming device for PCB circuit board production described in the present invention can open the blocked positions one by one through overall coordination, thereby solving the problem that the side clamping cannot be effectively processed at a single time.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board trimming devices, and in particular to an automatic trimming device for PCB circuit board production. Background Art

[0002] In the PCB production process, burrs and flashes are prone to occur, especially in the drilling and cutting process. Trimming requires trimming work, and the circuit board is clamped and positioned by a fixture during the trimming process. Generally, the upper and lower ends are clamped or fixed with suction cups. When the upper and lower ends are clamped and fixed, it is easy to scratch the circuit board and disconnect the wires. The suction cup fixation needs to avoid the round holes on the circuit board, and it is inconvenient to design according to circuit boards of different specifications. The common side clamping device is not convenient to use during the trimming process, and the blocked position affects the one-time trimming work of the side, resulting in low fluency and efficiency of the trimming work. Summary of the invention

[0003] The main purpose of the present invention is to provide an automatic trimming device for PCB circuit board production, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] An automated trimming device for PCB circuit board production comprises a support seat, a support column is fixedly provided on the upper end of the support seat, a control component is provided on the outer side of the support column, a trimming component is provided on the upper side of the control component, a clamping component is provided on the upper end of the support column, the control component comprises a motor 1 fixedly mounted on the outer side of the support column, a column gear 1 is fixedly provided on the outer side of a rotating shaft of the motor 1, a movable sleeve is rotatably provided on the outer side of the support column, a column gear 2 is fixedly provided on the lower side of the movable sleeve, a push plate is fixedly provided on the upper side of the movable sleeve, a sliding sleeve is fixedly provided on one side of the movable sleeve, a cylinder is fixedly provided on the lower end of the sliding sleeve, a movable frame is slidably provided on the inner side of the cylinder, sliding bars are fixedly provided on both ends of the movable frame, and a fixed sleeve is fixedly provided on the lower end of the movable frame.

[0006] Preferably, the trimming assembly includes a mounting plate fixedly mounted on the upper end of the movable frame, a motor 2 is fixedly mounted on one side of the mounting plate, a bevel gear 1 is fixedly arranged on one side of the rotating shaft of the motor 2, a shell is fixedly arranged at one end of the mounting plate near the outer side of the bevel gear 1, a lower transmission rod is rotatably arranged on the lower side of the shell, an upper transmission rod is rotatably arranged on the upper side of the shell, bevel gear 2 is fixedly arranged on opposite sides of the lower transmission rod and the upper transmission rod, a grinding wheel is fixedly arranged on the lower end of the lower transmission rod, a fan head is fixedly arranged on the upper end of the upper transmission rod, a fan cover is fixedly arranged on the upper end of the shell near the outer side of the fan head, a dust guide pipe is fixedly arranged on the upper end of the fan cover, and a distance sensor is fixedly arranged on the outside of the lower side of the shell.

[0007] Preferably, the clamping assembly includes a lower plate fixedly arranged on the upper end of the supporting column, an upper plate fixedly arranged on the upper end of the lower plate, a plate seat fixedly arranged on the upper end of the upper plate near the center position, a circular groove is arranged on the inner sides of the lower plate and the upper plate near the center position, a driving plate is rotatably arranged on the inner side of the circular groove, four groups of driving ports are opened on the inner side of the driving plate, a motor three is fixedly installed on the upper inner wall of the upper plate, slide rail sleeves are fixedly arranged on the inner sides of the lower plate and the upper plate, a movable shell is slidably arranged on the inner side of the slide rail sleeve, two groups of column gears three are rotatably arranged on the inner side of the movable shell, round rods are fixedly arranged on the upper and lower opposite sides of the two groups of column gears three, and a pull rod is fixedly arranged on one end of the movable shell close to the circular groove.

[0008] Preferably, discs are fixedly provided at both ends of the rotating shaft of the lower group of the two groups of column gears three, and a torsion spring 1 is sleeved on the outer side of the rotating shaft of the lower group of the two groups of column gears three. Movable openings are provided at positions corresponding to the two groups of discs on both sides of the slide rail sleeve, and a limiting opening is provided on the lower group of the two groups of round rods. A pipe sleeve is fixedly provided at the lower side of one side of the movable shell, a limiting rod is rotatably provided on the inner side of the pipe sleeve, one side of the limiting rod is provided as a trigger rod, a fixing ring is fixedly provided on the outer side of the limiting rod, and a torsion spring 2 is sleeved on the outer side of the pipe sleeve.

[0009] Preferably, the motor 1 is electrically connected to the external control end, the column gear 1 is meshed with the column gear 2, the two sides of the push plate are respectively an arc surface and an inclined surface, the arc surface of the push plate is arranged below one side of the grinding wheel, an opening adapted to the fixed sleeve is opened below one side of the sliding sleeve, the cylinder is electrically connected to the external control end, and the sliding bar and the sliding sleeve are slidingly arranged.

[0010] Preferably, the motor 2 is electrically connected to the external control end, the bevel gear 1 is meshed with the two sets of bevel gears 2, the airflow of the fan head blows toward the inside of the fan cover, the distance sensor is tilted, and the distance sensor is electrically connected to the external control end.

[0011] Preferably, the drive port is tilted, the motor three is electrically connected to the external control end, the sliding distance of the movable shell in the slide rail sleeve is adapted to the width of the push plate, the two groups of column gears three are meshed, and the pull rod moves through one side of the slide rail sleeve to the inside of the drive port.

[0012] Preferably, the two groups of discs and the three rotating shafts of the lower column gear move in the movable opening, the two ends of the torsion spring are respectively inserted into the movable shell and the inside of the disc, one side of the limit rod is inserted into the limit opening for restriction, the trigger rod is tilted toward the push plate position, and the two ends of the torsion spring are respectively inserted into the inside of the fixing ring and one side of the pipe sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Place the square circuit board on the upper end of the board seat, and use motor 3 to drive the driving disk to rotate. Four sets of driving ports respectively pull four sets of pull rods to drive the connected movable shell to slide on the slide rail sleeve, so that the four sets of round rods on the upper side are close to each other to clamp and position the sides of the square circuit board. At this time, the limit rod is inserted into the inner side of the limit port in the lower round rod to limit it, so as to avoid the contact between the four sets of round rods on the upper side and the circuit board, which will cause the two sets of column gears 3 to rotate and affect the normal clamping work.

[0015] The motor drives the column gear one to rotate, driving the meshing column gear two to rotate, and at the same time drives the push plate and the sliding sleeve connected to the movable sleeve to rotate clockwise. The rotation of the sliding sleeve will drive the trimming assembly set on the upper side of the movable frame to rotate, so as to trim the circuit board. The cylinder drives the fixed sleeve and the movable frame to slide in the sliding sleeve, and cooperates with the distance sensor to detect and adjust the distance between the grinding wheel in the trimming assembly and the side of the circuit board, so that the grinding wheel can effectively process the side of the circuit board during the rotation process. When the push plate rotates, it will first contact the trigger rod and then the lower round rod, triggering the two to perform corresponding changes.

[0016] When the bevel gear one is driven to rotate by the motor two, the two sets of bevel gears two are driven to rotate, the lower bevel gear two drives the lower transmission rod and the grinding wheel to rotate, and the side of the circuit board is trimmed and deburred, while the upper bevel gear two drives the upper transmission rod and the fan head to rotate, and the dust and other impurities dropped by the grinding wheel are blown into the inside of the fan cover, so as to reduce the pollution to the upper side of the upper plate and avoid the influence on the circuit board in the processing process.

[0017] When the grinding wheel moves along the side of the circuit board while grinding and approaches a group of clamped round rods, the push plate will first contact the trigger rod, push the trigger rod and the limit rod to rotate along the tube sleeve to tighten the torsion spring 2, until the trigger rod rotates ninety degrees to the upper end of the push plate, and at this time the limit rod rotates out of the limit mouth and contacts the restriction on the lower round rod. As the push plate rotates, the arc surface of the push plate will push the lower round rod, and the upper round rod will rotate through two groups of column gears 3, tightening the torsion spring 1, and the round rod clamping the side of the circuit board will open to avoid obstruction when the grinding wheel rotates and moves through this position. By opening the obstructed positions one by one, the problem of the side clamping not being able to be effectively handled at a single time is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic trimming device for PCB circuit board production according to the present invention;

[0019] Figure 2 This is a partial top view of the structure of an automatic trimming device for PCB circuit board production according to the present invention;

[0020] Figure 3 This is a schematic diagram of the control component and trimming component structure of an automatic trimming device for PCB circuit board production according to the present invention;

[0021] Figure 4 The invention provides an automatic trimming device for PCB circuit board production Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0022] Figure 5 This is a schematic diagram of the internal structure of a clamping assembly of an automatic trimming device for PCB circuit board production according to the present invention;

[0023] Figure 6 A schematic diagram of a partial cross-section structure of a clamping assembly of an automatic trimming device for PCB circuit board production according to the present invention Figure 1 ;

[0024] Figure 7 A schematic diagram of a partial cross-section structure of a clamping assembly of an automatic trimming device for PCB circuit board production according to the present invention Figure 2 ;

[0025] Figure 8 The invention provides an automatic trimming device for PCB circuit board production Figure 7 The enlarged structural diagram of the middle B part;

[0026] Fig. 9 The present invention is a schematic diagram of the partial structure of a clamping assembly of an automatic trimming device for PCB circuit board production.

[0027] In the figure: 1, support seat; 2, support column; 3, control component; 31, motor 1; 32, column gear 1; 33, movable sleeve; 34, column gear 2; 35, push plate; 36, sliding sleeve; 37, cylinder; 38, movable frame; 39, slide bar; 310, fixed sleeve; 4, trimming component; 41, mounting plate; 42, motor 2; 43, bevel gear 1; 44, housing; 45, lower transmission rod; 46, upper transmission rod; 47, bevel gear 2; 48, grinding wheel; 49, fan head; 410, fan sleeve; 411 , dust guide tube; 412, distance sensor; 5, clamping assembly; 51, lower plate; 52, upper plate; 53, plate seat; 54, circular groove; 55, drive plate; 56, drive port; 57, motor three; 58, slide rail sleeve; 59, movable shell; 510, column gear three; 511, round rod; 512, pull rod; 513, disc; 514, torsion spring one; 515, movable port; 516, limit port; 517, pipe sleeve; 518, limit rod; 519, trigger rod; 520, fixing ring; 521, torsion spring two. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] See also Figure 1-Figure 9 An embodiment of the present invention is as follows: an automatic trimming device for PCB circuit board production comprises a support seat 1, a support column 2 is fixedly arranged on the upper end of the support seat 1, a control component 3 is arranged on the outer side of the support column 2, a trimming component 4 is arranged on the upper side of the control component 3, a clamping component 5 is arranged on the upper end of the support column 2, the control component 3 comprises a motor 1 31 fixedly mounted on the outer side of the support column 2, a column gear 1 32 is fixedly arranged on the outer side of the rotating shaft of the motor 1 31, a movable sleeve 33 is rotatably arranged on the outer side of the support column 2, a column gear 2 34 is fixedly arranged on the lower side of the movable sleeve 33, a push plate 35 is fixedly arranged on the upper side of the movable sleeve 33, a sliding sleeve 36 is fixedly arranged on one side of the movable sleeve 33, a cylinder 37 is fixedly arranged on the lower end of the sliding sleeve 36, a movable frame 38 is slidably arranged on the inner side of the cylinder 37, sliding bars 39 are fixedly arranged on both ends of the movable frame 38, and a fixed sleeve 310 is fixedly arranged on the lower end of the movable frame 38.

[0031] Motor 1 31 is electrically connected to the external control end, column gear 1 32 is meshed with column gear 2 34, the two sides of the push plate 35 are respectively an arc surface and an inclined surface, the arc surface of the push plate 35 is arranged below one side of the grinding wheel 48, an opening adapted to the fixed sleeve 310 is opened below one side of the sliding sleeve 36, the cylinder 37 is electrically connected to the external control end, and the sliding bar 39 and the sliding sleeve 36 are slidingly arranged.

[0032] The motor 1 31 drives the column gear 1 32 to rotate, driving the meshing column gear 2 34 to rotate, and at the same time drives the push plate 35 and the sliding sleeve 36 connected to the movable sleeve 33 to rotate clockwise. The rotation of the sliding sleeve 36 will drive the trimming assembly 4 set on the upper side of the movable frame 38 to rotate, and the circuit board is trimmed. The cylinder 37 drives the fixed sleeve 310 and the movable frame 38 to slide in the sliding sleeve 36, and cooperates with the distance sensor 412 to detect and adjust the distance between the grinding wheel 48 in the trimming assembly 4 and the side of the circuit board, so that the grinding wheel 48 can effectively process the side of the circuit board during the rotation process. When the push plate 35 rotates, it will first contact the trigger rod 519 and then contact the lower round rod 511, triggering the two to perform corresponding changes.

[0033] The trimming assembly 4 includes a mounting plate 41 fixedly mounted on the upper end of the movable frame 38, a motor 2 42 is fixedly mounted on one side of the mounting plate 41, a bevel gear 1 43 is fixedly mounted on one side of the rotating shaft of the motor 2 42, a housing 44 is fixedly mounted on one end of the mounting plate 41 near the outer side of the bevel gear 1 43, a lower transmission rod 45 is rotatably mounted on the lower side of the housing 44, an upper transmission rod 46 is rotatably mounted on the upper side of the housing 44, bevel gear 2 47 is fixedly mounted on opposite sides of the lower transmission rod 45 and the upper transmission rod 46, a grinding wheel 48 is fixedly mounted on the lower end of the lower transmission rod 45, a fan head 49 is fixedly mounted on the upper end of the upper transmission rod 46, a fan cover 410 is fixedly mounted on the upper end of the housing 44 near the outer side of the fan head 49, a dust guide tube 411 is fixedly mounted on the upper end of the fan cover 410, and a distance sensor 412 is fixedly mounted on the outer side of the lower side of the housing 44.

[0034] Motor 2 42 is electrically connected to the external control terminal, bevel gear 1 43 and two sets of bevel gear 2 47 are meshed, the airflow of fan head 49 blows toward the inside of fan sleeve 410, distance sensor 412 is tilted, and distance sensor 412 is electrically connected to the external control terminal.

[0035] When the bevel gear 1 43 is driven to rotate by the motor 2 42, the two sets of bevel gears 2 47 are driven to rotate, and the lower bevel gear 2 47 drives the lower transmission rod 45 and the grinding wheel 48 to rotate, so as to trim and deburr the side of the circuit board, while the upper bevel gear 2 47 drives the upper transmission rod 46 and the fan head 49 to rotate, so as to blow the dust and other impurities dropped by the grinding wheel 48 to the inside of the fan sleeve 410, so as to reduce the pollution to the upper side of the upper plate 52 and avoid affecting the circuit board during the processing.

[0036] The clamping assembly 5 includes a lower plate 51 fixedly arranged on the upper end of the support column 2, an upper plate 52 fixedly arranged on the upper end of the lower plate 51, a plate seat 53 fixedly arranged on the upper end of the upper plate 52 near the center position, a circular groove 54 is arranged on the inner side of the lower plate 51 and the upper plate 52 near the center position, a driving plate 55 is rotatably arranged on the inner side of the circular groove 54, four groups of driving ports 56 are opened on the inner side of the driving plate 55, a motor 3 is fixedly installed on the upper inner wall of the upper plate 52, a slide rail sleeve 58 is fixedly arranged on the inner side of the lower plate 51 and the upper plate 52, a movable shell 59 is slidably arranged on the inner side of the slide rail sleeve 58, two groups of column gears 3 510 are rotatably arranged on the inner side of the movable shell 59, round rods 511 are fixedly arranged on the upper and lower opposite sides of the two groups of column gears 3 510, and a pull rod 512 is fixedly arranged on one end of the movable shell 59 close to the circular groove 54.

[0037] The drive port 56 is tilted, the motor three 57 is electrically connected to the external control end, the sliding distance of the movable shell 59 in the slide rail sleeve 58 is adapted to the width of the push plate 35, the two sets of column gears three 510 are meshed, and the pull rod 512 moves through one side of the slide rail sleeve 58 to the inside of the drive port 56.

[0038] The square circuit board is placed on the upper end of the plate seat 53, and the driving disk 55 is driven to rotate by the motor three 57. The four groups of driving ports 56 respectively pull the four groups of pull rods 512 to drive the connected movable shell 59 to slide on the slide rail sleeve 58, so that the four groups of round rods 511 on the upper side are brought close to each other to clamp and position the sides of the square circuit board. At this time, the limiting rod 518 is inserted into the limiting port 516 in the lower round rod 511 to limit it, so as to prevent the two groups of column gears three 510 from rotating when the four groups of round rods 511 on the upper side contact with the circuit board, affecting the normal clamping work.

[0039] Both ends of the lower group of rotating shafts in the two groups of column gears three 510 are fixedly provided with discs 513, the outer sides of the lower group of rotating shafts in the two groups of column gears three 510 are sleeved with torsion springs 1 514, movable openings 515 are opened at positions corresponding to the two groups of discs 513 on both sides of the slide rail sleeve 58, and a limiting opening 516 is opened at the lower group of the two groups of round rods 511, a pipe sleeve 517 is fixedly provided at the lower side of one side of the movable shell 59, a limiting rod 518 is rotatably provided on the inner side of the pipe sleeve 517, a trigger rod 519 is set on one side of the limiting rod 518, a fixing ring 520 is fixedly provided on the outer side of the limiting rod 518, and a torsion spring 2 521 is sleeved on the outer side of the pipe sleeve 517.

[0040] The two groups of discs 513 and the rotating shaft of the lower column gear three 510 move in the movable opening 515, the two ends of the torsion spring one 514 are respectively inserted into the movable shell 59 and the inside of the disc 513, one side of the limit rod 518 is inserted into the limit opening 516 for restriction, the trigger rod 519 is tilted toward the position of the push plate 35, and the two ends of the torsion spring two 521 are respectively inserted into the inside of the fixing ring 520 and one side of the pipe sleeve 517.

[0041] When the grinding wheel 48 moves along the side of the circuit board while grinding and approaches a group of clamping round rods 511, the push plate 35 will first contact the trigger rod 519, pushing the trigger rod 519 and the limiting rod 518 to rotate along the tube sleeve 517 to tighten the torsion spring 2 521 until the trigger rod 519 rotates ninety degrees to the upper end of the push plate 35. At this time, the limiting rod 518 is rotated out of the limiting opening 516 and contacts the restriction on the lower round rod 511. As the push plate 35 rotates, the arc surface of the push plate 35 will push the lower round rod 511, and the upper round rod 511 is rotated through the two groups of column gears 3 510, and the torsion spring 1 514 is tightened. The round rod 511 clamping the side of the circuit board is opened to prevent the grinding wheel 48 from being blocked when rotating and moving through this position. By opening the blocked positions one by one, the problem of the side clamping not being able to be effectively processed at a single time is solved.

[0042] Working principle: when in use, place the square circuit board on the upper end of the board seat 53, drive the driving disk 55 to rotate through the motor three 57, and pull the four pull rods 512 respectively through the four drive ports 56 to drive the connected movable shell 59 to slide on the slide rail sleeve 58, so that the four groups of round rods 511 on the upper side are close to each other to clamp and position the sides of the square circuit board. At this time, the limit rod 518 is inserted into the inner side of the limit port 516 in the lower round rod 511 to prevent the four groups of round rods 511 on the upper side from contacting the circuit board, causing the two groups of column gears three 510 to rotate and affect the normal clamping work; and the column gear 32 is driven to rotate by the motor one 31 to drive the meshing column gears The second 34 rotates, and at the same time drives the push plate 35 and the sliding sleeve 36 connected to the movable sleeve 33 to rotate clockwise, and the rotation of the sliding sleeve 36 drives the trimming assembly 4 set on the upper side of the movable frame 38 to rotate, so as to trim the circuit board, and the cylinder 37 drives the fixed sleeve 310 and the movable frame 38 to slide in the sliding sleeve 36, and cooperates with the distance sensor 412 to detect and adjust the distance between the grinding wheel 48 in the trimming assembly 4 and the side of the circuit board, so that the grinding wheel 48 can effectively process the side of the circuit board during the rotation process, and when the push plate 35 rotates, it will first contact with the trigger rod 519, and then contact with the lower round rod 511, triggering the two to perform corresponding changes. In addition, when the bevel gear 1 43 is driven to rotate by the motor 2 42, the two sets of bevel gears 2 47 are driven to rotate, and the lower bevel gear 2 47 drives the lower transmission rod 45 and the grinding wheel 48 to rotate, and the side of the circuit board is trimmed and deburred, while the upper bevel gear 2 47 drives the upper transmission rod 46 and the fan head 49 to rotate, and the dust and other impurities dropped by the grinding wheel 48 are blown to the inside of the fan sleeve 410, so as to reduce the pollution to the upper side of the upper plate 52 and avoid affecting the circuit board during the processing; finally, when the grinding wheel 48 moves along the side of the circuit board while grinding and approaches a group of clamping round rods 511, the push plate 35 will first contact with the trigger rod 519. The trigger rod 519 and the limit rod 518 are pushed and rotated along the sleeve 517 to tighten the torsion spring 2 521 until the trigger rod 519 rotates ninety degrees to the upper end of the push plate 35. At this time, the limit rod 518 is rotated out of the limit opening 516 and contacts the restriction on the lower round rod 511. As the push plate 35 rotates, the arc surface of the push plate 35 pushes the lower round rod 511, and the upper round rod 511 is rotated through the two sets of column gears 3 510, and the torsion spring 1 514 is tightened. The round rod 511 that clamps the side of the circuit board is opened to prevent the grinding wheel 48 from being blocked when rotating and moving through this position. By opening the blocked positions one by one, the problem of the side clamping not being able to be effectively processed at a single time is solved.

[0043] The usage and control methods of the electronic equipment in the present invention are common knowledge in the field, and their working principles are already known technologies, and the equipment can be selected according to the actual use, so they will not be explained in detail.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic trimming device for PCB circuit board production, comprising a support seat, characterized in that: The upper end of the support seat is fixedly provided with a support column, the outer side of the support column is provided with a control component, the upper side of the control component is provided with a trimming component, the upper end of the support column is provided with a clamping component, the control component includes a motor 1 fixedly installed on the outer side of the support column, a column gear 1 is fixedly provided on the outer side of the rotating shaft of the motor 1, a movable sleeve is rotatably provided on the outer side of the support column, a column gear 2 is fixedly provided on the lower side of the movable sleeve, a push plate is fixedly provided on the upper side of the movable sleeve, a sliding sleeve is fixedly provided on one side of the movable sleeve, a cylinder is fixedly provided at the lower end of the sliding sleeve, a movable frame is slidably provided on the inner side of the cylinder, sliding bars are fixedly provided at both ends of the movable frame, and a fixed sleeve is fixedly provided at the lower end of the movable frame; The clamping assembly comprises a lower plate fixedly arranged on the upper end of the supporting column, an upper plate fixedly arranged on the upper end of the lower plate, a plate seat fixedly arranged on the upper end of the upper plate near the center position, a circular groove is arranged on the inner sides of the lower plate and the upper plate near the center position, a driving plate is rotatably arranged on the inner side of the circular groove, four groups of driving openings are opened on the inner side of the driving plate, a motor three is fixedly installed on the inner wall of the upper side of the upper plate, a slide rail sleeve is fixedly arranged on the inner side of the slide rail sleeve, a movable shell is slidably arranged on the inner side of the slide rail sleeve, two groups of column gears three are rotatably arranged on the inner side of the movable shell, round rods are fixedly arranged on the upper and lower opposite sides of the two groups of column gears three, and a pull rod is fixedly arranged on one end of the movable shell close to the circular groove; The two ends of the lower rotating shaft of the two groups of column gears three are fixedly provided with discs, the outer sides of the lower rotating shaft of the two groups of column gears three are sleeved with a torsion spring 1, the positions on both sides of the slide rail sleeve corresponding to the two groups of discs are provided with movable openings, the lower group of the two groups of round rods is provided with a limited position opening, a pipe sleeve is fixedly provided below one side of the movable shell, a limited position rod is rotatably provided inside the pipe sleeve, one side of the limit rod is provided as a trigger rod, a fixing ring is fixedly provided outside the limit rod, and a torsion spring 2 is sleeved outside the pipe sleeve; The motor 1 is electrically connected to the external control end, the column gear 1 is meshed with the column gear 2, the two sides of the push plate are respectively an arc surface and an inclined surface, the arc surface of the push plate is arranged below one side of the grinding wheel, an opening adapted to the fixed sleeve is opened below one side of the sliding sleeve, the cylinder is electrically connected to the external control end, and the sliding bar and the sliding sleeve are slidingly arranged; The two groups of discs and the three rotating shafts of the lower column gear move in the movable opening, the two ends of the torsion spring are respectively inserted into the movable shell and the inside of the disc, one side of the limit rod is inserted into the limit opening for restriction, the trigger rod is tilted toward the push plate position, and the two ends of the torsion spring are respectively inserted into the inside of the fixing ring and one side of the pipe sleeve.

2. The automatic trimming device for PCB circuit board production according to claim 1, characterized in that: The trimming assembly includes a mounting plate fixedly mounted on the upper end of the movable frame, a motor 2 is fixedly mounted on one side of the mounting plate, a bevel gear 1 is fixedly mounted on one side of the rotating shaft of the motor 2, a shell is fixedly mounted on one end of the mounting plate near the outer side of the bevel gear 1, a lower transmission rod is rotatably mounted on the lower side of the shell, an upper transmission rod is rotatably mounted on the upper side of the shell, bevel gear 2 is fixedly mounted on opposite sides of the lower transmission rod and the upper transmission rod, a grinding wheel is fixedly mounted on the lower end of the lower transmission rod, a fan head is fixedly mounted on the upper end of the upper transmission rod, a fan cover is fixedly mounted on the upper end of the shell near the outer side of the fan head, a dust guide pipe is fixedly mounted on the upper end of the fan cover, and a distance sensor is fixedly mounted on the outside of the lower side of the shell.

3. The automatic trimming device for PCB circuit board production according to claim 2 is characterized in that: The motor 2 is electrically connected to the external control end, the bevel gear 1 is meshed with the two sets of bevel gears 2, the airflow of the fan head blows toward the inside of the fan cover, the distance sensor is tilted, and the distance sensor is electrically connected to the external control end.

4. The automatic trimming device for PCB circuit board production according to claim 1, characterized in that: The driving port is tilted, the motor three is electrically connected to the external control end, the sliding distance of the movable shell in the slide rail sleeve is adapted to the width of the push plate, the two groups of column gears three are meshed, and the pull rod moves through one side of the slide rail sleeve to the inside of the driving port.

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