Printed circuit board separation machine

Abstract

The invention discloses a printed circuit board splitter, which relates to the technical field of circuit board processing, and comprises a machine base, a slitting mechanism installed inside the machine base, and a conveying mechanism installed on the inner wall of the bottom of the machine base, and also comprises: an operating table; a fixing mechanism, used for fixing the part to be cut off before cutting the substrate; a positioning mechanism, used for adjusting the position of each cut circuit board; a grinding mechanism, used for grinding two cut surfaces of the circuit board respectively; and a side-changing mechanism, used for driving the circuit board to rotate 180 degrees after being grinded once; the printed circuit board splitter, by clamping and fixing a row of circuit boards to be cut off before cutting, ensures that the row of circuit boards is directly positioned after being cut off, avoids the problem in the prior art that each circuit board is directly scattered and needs to be manually sorted after being cut off from the substrate, and solves the problem that the circuit boards need to be manually sorted after being cut off and then sent to the grinding equipment for grinding one by one.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board processing, and in particular to a printed circuit board separator. Background Art

[0002] Printed circuit boards are important electronic components, supporting electronic elements and providing circuit connections for electronic components. For the convenience of processing, multiple circuit boards are usually processed on a whole substrate and then separated, that is, each printed circuit board is cut out. However, burrs will be generated on the cutting edges after cutting, which requires further grinding.

[0003] After the existing circuit board splitter cuts the circuit board, it is directly scattered without any rules. The staff needs to reorganize the circuit boards and send them to the grinding equipment for grinding in sequence. The operation is relatively complicated, and it is difficult to send the entire row of multiple circuit boards after cutting directly to the grinding station for double-sided grinding. Summary of the invention

[0004] The object of the present invention is to provide a printed circuit board separator to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a printed circuit board splitter, comprising a machine base, a slitting mechanism installed inside the machine base and a conveying mechanism installed on the inner wall of the bottom of the machine base, and also comprising:

[0006] An operating table, which is installed inside the machine base and is used to place the substrate to be processed;

[0007] A fixing mechanism, which is provided in plurality and is arranged on one side of the operating table, and is used to fix the portion to be cut off before the substrate is cut;

[0008] A positioning mechanism, which is installed inside the machine base and connected to the fixing mechanism, and is used to adjust the position of each cut circuit board;

[0009] A grinding mechanism, which is installed inside the machine base and is provided with two, and is used to grind the two cut surfaces of the circuit board respectively;

[0010] The edge-changing mechanism is connected to the fixing mechanism and is used to drive the circuit board to rotate 180° after one polishing;

[0011] The cleaning mechanism is arranged on the top of the conveying mechanism and is used for cleaning the waste materials generated by cutting and grinding.

[0012] Furthermore, first cylinders are installed on both sides of the operating table, and a pressure plate with an L-shaped structure is installed on the top of the first cylinder;

[0013] A second cylinder is installed on the inner wall of the top of the base, a connecting block is installed on the extended end of the second cylinder, a plurality of connecting rods are slidably connected inside the connecting block, a push plate is fixedly connected to the bottom ends of the plurality of connecting rods, and a spring is sleeved outside the connecting rod.

[0014] Further, the slitting mechanism includes a cutting machine, a first screw rod rotatably connected to the inner wall of the machine base, and a first motor installed on the inner wall of one side of the machine base;

[0015] The output shaft of the first motor is connected to the first screw rod through a first pulley assembly;

[0016] The first screw rod is externally threaded with a first slide seat, and the cutting machine is installed at the bottom of the first slide seat;

[0017] A first guide rod is also provided below the first screw rod. The first guide rod is fixed to the inner wall of the machine base, and the first sliding seat is slidably sleeved on the outside of the first guide rod.

[0018] Furthermore, the positioning mechanism includes a driving shaft rotatably connected to the inner wall of the base and a driving bar fixedly sleeved on the outside of the driving shaft;

[0019] The driving bar is a cross-shaped structure, and the outer walls of the four sides of the driving bar are provided with structural grooves;

[0020] There are four fixing mechanisms, which are respectively installed on the inner sides of four structural grooves;

[0021] A cover body is installed on the inner wall of one side of the base, a second motor is installed inside the cover body, and an output end of the second motor is fixedly connected to one end of the driving shaft.

[0022] Further, the fixing mechanism includes a bidirectional screw rod rotatably connected to the inside of the structural groove, a third motor mounted on the outer wall of the driving bar, and two linkage plates screwed to the outside of the bidirectional screw rod;

[0023] The output end of the third motor is fixedly connected to one end of the bidirectional screw rod;

[0024] A plurality of second guide rods are fixedly connected inside the structural groove, and the linkage plate is slidably sleeved outside the second guide rods;

[0025] One end of the two linkage plates is fixedly connected to a fixing strip, and the outer walls of the two fixing strips on the opposite sides are rotatably connected to a plurality of clamping plates;

[0026] A plurality of transmission shafts are rotatably connected inside the two fixing bars, and one end of the transmission shaft is fixedly connected to the outer wall of the clamping plate.

[0027] Furthermore, the two grinding mechanisms are respectively located above the driving bar and away from the operating table;

[0028] The grinding mechanism comprises a second screw rod rotatably connected to the inner wall of the machine base, a second slide seat screwed to the outside of the second screw rod, and a grinder installed on the outer wall of the second slide seat;

[0029] The second screw in one of the grinding mechanisms is connected to the output shaft of the first motor via a second pulley assembly, and the two second screws are connected via a third pulley assembly;

[0030] The grinders in the two grinding mechanisms are both arranged toward the driving bar;

[0031] A third guide rod is slidably connected inside the second sliding seat, and the third guide rod is fixedly connected to the inner wall of the machine base.

[0032] Furthermore, the side-changing mechanism comprises two support bars fixedly connected to the outer wall of the driving bar, a third screw rod rotatably connected inside the two support bars, and a driven shaft rotatably connected to one end of the driving bar close to the cover body;

[0033] The outside of the third screw rod is threaded with a plurality of racks, a fourth guide rod is fixedly connected between the two support bars, and the racks are slidably sleeved on the outside of the fourth guide rod;

[0034] A plurality of transmission shafts inside one of the fixed bars are all fixedly sleeved with first gears on their exteriors, and the plurality of first gears are respectively meshed with a plurality of racks;

[0035] The third screw rod is transmission-connected to the driven shaft via a fourth pulley assembly, and a second gear is fixedly sleeved on the outside of the driven shaft.

[0036] Furthermore, a tooth arc is fixedly connected to the outer wall of the cover body, and the second gears in the plurality of edge-changing mechanisms are meshed with the tooth arc in sequence during the rotation of the driving bar.

[0037] Furthermore, the cleaning mechanism comprises a dust suction nozzle arranged on the top of the conveying mechanism and a dust suction pipe installed on the top of the dust suction nozzle, and the dust suction nozzle is installed at the bottom of the second slide seat in another polishing mechanism.

[0038] Compared with the prior art, the printed circuit board separator provided by the present invention has the following beneficial effects:

[0039] 1. By clamping and fixing a row of circuit boards to be cut before cutting, it is ensured that the row of circuit boards is directly positioned after being cut, avoiding the problem in the prior art that each circuit board is directly scattered after being cut from the substrate and needs to be manually sorted;

[0040] 2. A row of circuit boards that have been cut off can be sent directly for polishing, which solves the problem that the circuit boards need to be manually sorted and then sent to the polishing equipment for polishing one by one after being cut, and increases the functionality of the circuit boards when they are separated;

[0041] 3. After the same side of the same circuit board has been polished once, the adjustment mechanism can automatically change the side of the circuit board, making it easier for the polishing mechanism to polish the other side of the same circuit board, thereby improving the convenience of circuit board polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0044] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0045] Figure 3 It is a schematic diagram of the internal structure of the base of the present invention;

[0046] Figure 4 It is a schematic diagram of the substrate structure of the present invention;

[0047] Figure 5 It is a schematic diagram of the structure of the fixing mechanism and the adjusting mechanism of the present invention;

[0048] Figure 6 It is a schematic diagram of the fixing mechanism structure of the present invention;

[0049] Figure 7 It is a schematic diagram of the partial structure of the positioning mechanism of the present invention;

[0050] Figure 8 It is a schematic diagram of the structures of the slitting mechanism, grinding mechanism and cleaning mechanism of the present invention.

[0051] Description of reference numerals:

[0052] 1. Machine base; 2. Cutting machine; 3. Conveying mechanism; 4. Operating table; 5. First cylinder; 6. Pressing plate; 7. Second cylinder; 8. Connecting block; 9. Connecting rod; 10. Pushing plate; 11. First screw rod; 12. First motor; 13. First pulley assembly; 14. First slide seat; 15. Driving shaft; 16. Driving bar; 17. Structural groove; 18. Cover; 19. Bidirectional screw rod; 20. Third motor; 21. Linkage plate; 22. Fixing bar; 23. Clamp; 24. Transmission shaft; 25. Second screw rod; 26. Second slide seat; 27. Grinder; 28. Second pulley assembly; 29. ​​Third pulley assembly; 30. Support bar; 31. Third screw rod; 32. Driven shaft; 33. Rack; 34. First gear; 35. Fourth pulley assembly; 36. Second gear; 37. Tooth arc; 38. Dust nozzle; 39. Dust tube; 40. Base plate. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0054] Example 1: Please refer to Figure 1 - Figure 8 A printed circuit board splitter comprises a machine base 1, a slitting mechanism installed inside the machine base 1 and a conveying mechanism 3 installed on the inner wall of the bottom of the machine base 1, the slitting mechanism comprises a cutting machine 2, a first screw rod 11 rotatably connected to the inner wall of the machine base 1 and a first motor 12 installed on the inner wall of one side of the machine base 1; the output shaft of the first motor 12 is connected to the first screw rod 11 through a first pulley assembly 13; the first slide 14 is screwed to the outside of the first screw rod 11, and the cutting machine 2 is installed at the bottom of the first slide 14; a first guide rod is also provided below the first screw rod 11, the first guide rod is fixed to the inner wall of the machine base 1, and the first slide 14 is slidably sleeved on the outside of the first guide rod;

[0055] By controlling the first motor 12 to drive its output shaft to rotate forward, the first pulley assembly 13 is used to drive the first screw rod 11 to rotate forward synchronously, and the first slide 14 is driven to move rightward along the outer wall of the first guide rod, thereby driving the cutting machine 2 to move synchronously to cut the substrate 40;

[0056] By controlling the first motor 12 to drive its output shaft to reverse, the first screw rod 11 is driven to reverse synchronously through the transmission connection of the first pulley assembly 13, and the first slide 14 is driven to move left along the outer wall of the first guide rod, thereby driving the cutting machine 2 to move synchronously, and the substrate 40 can also be cut.

[0057] Also includes:

[0058] An operating table 4 is installed inside the machine base 1 and is used to place a substrate 40 to be processed. A first cylinder 5 is installed on both sides of the operating table 4, and a pressure plate 6 with an L-shaped structure is installed on the top of the first cylinder 5; a second cylinder 7 is installed on the inner wall of the top of the machine base 1, and a connecting block 8 is installed on the extended end of the second cylinder 7. A plurality of connecting rods 9 are slidably connected inside the connecting block 8, and a push plate 10 is fixedly connected to the bottom ends of the plurality of connecting rods 9. A spring is sleeved outside the connecting rod 9, and the top end of the spring is fixedly connected to the bottom of the connecting block 8, and the bottom end of the spring is fixedly connected to the top of the push plate 10;

[0059] There are multiple rows of small-area circuit boards in the substrate 40. Each time a row of circuit boards is cut off, the circuit boards in the same row are not connected, but separated by empty slots in the middle. Two adjacent rows of circuit boards are connected by the unprinted substrate 40. Cutting is to cut off this part to separate the circuit boards.

[0060] By manually driving the push plate 10 to move up, the connecting rod 9 slides toward the inside of the connecting block 8, and the spring contracts, the substrate 40 can be placed on the top of the operating table 4, and the push plate 10 is driven to move down and reset by the rebound force of the spring, and the second cylinder 7 is controlled to contract, and the push plate 10 is driven to move synchronously through the connecting block 8 and the connecting rod 9, thereby driving the substrate 40 to move toward the driving bar 16, so that the circuit board of the front row of the substrate 40 is inserted into the inner side of the two fixing bars 22, wherein the first movement distance of the substrate 40 driven by the second cylinder 7 is the same as the width of the circuit board, the second movement distance is the same as the distance between the two adjacent rows of circuit boards, the third movement distance is the same as the first movement distance, and the fourth movement distance is the same as the second movement distance, that is, there are two movement distances, which are performed alternately, wherein the substrate 40 is not inserted into the inner side of the two fixing bars 22 during the second and fourth movements, so when the substrate 40 between the two adjacent rows of circuit boards is cut off, it will not enter the inside of the fixing bar 22 and will fall directly down;

[0061] After each movement, the first cylinder 5 is controlled to drive the pressing plate 6 to move downward to press the substrate 40 to improve the cutting stability. After cutting, the first cylinder 5 is controlled to drive the pressing plate 6 to move upward to facilitate the movement of the substrate 40.

[0062] The fixing mechanism is provided with multiple ones and is arranged on one side of the operating table 4, and is used to fix the part to be cut off before the substrate 40 is cut. The fixing mechanism includes a bidirectional screw 19 rotatably connected to the inside of the structural groove 17, a third motor 20 installed on the outer wall of the driving bar 16, and two linkage plates 21 screwed to the outside of the bidirectional screw 19; the output end of the third motor 20 is fixedly connected to one end of the bidirectional screw 19; a plurality of second guide rods are fixedly connected to the inside of the structural groove 17, and the linkage plate 21 is slidably sleeved on the outside of the second guide rod; one end of the two linkage plates 21 is fixedly connected to a fixing bar 22, and a plurality of clamping plates 23 are rotatably connected to the outer walls of the opposite sides of the two fixing bars 22; a plurality of transmission shafts 24 are rotatably connected to the inside of the two fixing bars 22, and one end of the transmission shaft 24 is fixedly connected to the outer wall of the clamping plate 23;

[0063] When the front row of circuit boards of the base plate 40 enters between the two fixing bars 22, the third motor 20 is controlled to drive the bidirectional screw rod 19 to rotate forward, driving the two linkage plates 21 to approach each other, and then driving the two fixing bars 22 to approach each other, and then driving the upper and lower rows of clamping plates 23 to approach each other, and the upper and lower clamping plates 23 clamp the circuit boards in the same row, and then the base plate 40 is cut, thereby avoiding the problem that the circuit boards are directly scattered after being cut off from the base plate 40 and need to be manually sorted;

[0064] After both sides of the circuit board are polished and rotated to the bottom of the driving bar 16, the third motor 20 is controlled to drive the bidirectional screw 19 to reverse, drive the two linkage plates 21 away from each other, and then drive the two fixed bars 22 away from each other, and then drive the upper and lower rows of clamping plates 23 away from each other, so that the circuit board can be automatically discharged to the top of the conveying mechanism 3.

[0065] The positioning mechanism is installed inside the base 1 and connected to the fixing mechanism, and is used to adjust the position of each cut circuit board. The positioning mechanism includes a driving shaft 15 rotatably connected to the inner wall of the base 1 and a driving bar 16 fixedly sleeved on the outside of the driving shaft 15; the driving bar 16 is a cross-shaped structure, and structural grooves 17 are opened on the outer walls of the four sides of the driving bar 16; the number of the fixing mechanisms is four, and the four fixing mechanisms are respectively installed on the inner sides of the four structural grooves 17; a cover body 18 is installed on the inner wall of one side of the base 1, and a second motor is installed inside the cover body 18, and the output end of the second motor is fixedly connected to one end of the driving shaft 15;

[0066] After a row of circuit boards is cut, the driving shaft 15 is driven to rotate 90° by controlling the second motor, and then the row of circuit boards clamped between the two fixed bars 22 is driven to rotate to the top of the driving bar 16 through the driving bar 16 to reach the first grinding station, and the same side of each circuit board is grinded by the grinding mechanism. After the first grinding is completed, the driving shaft 15 is driven to continue to rotate 90° by controlling the second motor, and the circuit boards that have been grinded once are driven to rotate to the front of the driving bar 16 to reach the second grinding station, and the other side of each circuit board is grinded by another grinding mechanism. After the second grinding, the driving shaft 15 is driven to continue to rotate 90° by controlling the second motor, and the circuit boards that have been grinded twice are driven to rotate to the bottom of the driving bar 16 to reach the unloading station, and the polished circuit boards are placed on the top of the conveying mechanism 3, and then the driving shaft 15 is driven to continue to rotate 90° by controlling the second motor, and the fixed bar 22 is driven back to the rear of the driving bar 16, that is, the loading station, and the circuit boards are loaded, grinded once, grinded twice, and unloaded in turn.

[0067] A grinding mechanism is installed inside the machine base 1, and two of them are provided for grinding two cross-sections of the circuit board respectively. The two grinding mechanisms are respectively located above the driving bar 16 and on the side away from the operating table 4; the grinding mechanism includes a second screw rod 25 rotatably connected to the inner wall of the machine base 1, a second slide seat 26 screwed to the outside of the second screw rod 25, and a grinder 27 installed on the outer wall of the second slide seat 26; the second screw rod 25 in one of the grinding mechanisms is connected to the output shaft of the first motor 12 through a second pulley assembly 28, and the two second screw rods 25 are connected through a third pulley assembly 29; the grinders 27 in the two grinding mechanisms are both arranged toward the driving bar 16; a third guide rod is also slidably connected to the inside of the second slide seat 26, and the third guide rod is fixed to the inner wall of the machine base 1;

[0068] When the cut circuit board reaches the primary grinding station and the secondary grinding station, the slitting mechanism drives the cutting machine 2 to cut the substrate 40, while the first motor 12 drives the second screw rod 25 to rotate synchronously through the second pulley assembly 28. The transmission connection of the third pulley assembly 29 enables the second screw rods 25 in the two grinding mechanisms to keep rotating synchronously, thereby making the two grinding mechanisms run synchronously. When rotating, the second screw rod 25 drives the second slide 26 to move along the outer wall of the third guide rod, thereby driving the grinder 27 to grind one side of each circuit board in turn.

[0069] The side-changing mechanism is connected to the fixing mechanism and is used to drive the circuit board to rotate 180° after one polishing. The side-changing mechanism includes two support bars 30 fixedly connected to the outer wall of the driving bar 16, a third screw rod 31 rotatably connected to the inside of the two support bars 30, and a driven shaft 32 rotatably connected to one end of the driving bar 16 near the cover body 18; a plurality of racks 33 are screwed to the outside of the third screw rod 31, a fourth guide rod is also fixedly connected between the two support bars 30, and the racks 33 are also slidably sleeved on the outside of the fourth guide rod; the outside of the plurality of transmission shafts 24 inside one of the fixing bars 22 are all fixedly sleeved with first gears 34, and the plurality of first gears 34 are divided into The third screw rod 31 and the driven shaft 32 are respectively meshed with a plurality of racks 33, wherein when the fixed bar 22 moves, the transmission shaft 24 and the first gear 34 outside thereof move accordingly, but the third screw rod 31 and the rack 33 outside thereof do not move accordingly, and although the first gear 34 moves, it always remains meshed with the rack 33 and does not move out of the meshing range with the rack 33; the third screw rod 31 and the driven shaft 32 are connected to each other through a fourth pulley assembly 35, the outer portion of the driven shaft 32 is fixedly sleeved with a second gear 36, and a tooth arc 37 is fixedly connected to the outer wall of the cover body 18, and the second gears 36 in the plurality of side-changing mechanisms are meshed with the tooth arc 37 in sequence during the rotation of the driving bar 16;

[0070] When the circuit board is driven to the secondary grinding station after the first grinding, the second gear 36 will mesh with the tooth arc 37 and drive the driven shaft 32 to rotate, thereby driving the third screw rod 31 to rotate synchronously through the fourth pulley assembly 35, and each rack 33 moves along the outside of the fourth guide rod. In this process, through the meshing effect between each rack 33 and each first gear 34, the transmission shaft 24 is driven to rotate 180°, and then the circuit board clamped between the two clamping plates 23 is driven to rotate 180°, so that the unpolished side of the circuit board faces the grinding mechanism located in front of the drive bar 16, so that the grinding mechanism can grind the other side of the circuit board.

[0071] Example 2: Please refer to Figure 3 and Figure 8 , this embodiment provides a technical solution based on the embodiment 1: a cleaning mechanism, which is arranged on the top of the conveying mechanism 3, is used to clean the waste generated by cutting and grinding, and the cleaning mechanism includes a dust suction nozzle 38 arranged on the top of the conveying mechanism 3 and a dust suction pipe 39 installed on the top of the dust suction nozzle 38, the dust suction nozzle 38 is installed at the bottom of the second slide seat 26 in another grinding mechanism, and the dust suction pipe 39 is connected to the dust collector;

[0072] After the circuit board dropped on the top of the conveying mechanism 3 is guided out, the second slide 26 in the grinding mechanism in front of the driving bar 16 is driven to move. When the second slide 26 moves, it drives the dust nozzle 38 to move synchronously along the top of the conveying mechanism 3, thereby sucking away the small particles of waste on the top of the conveying mechanism 3.

[0073] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in the field understand the principle of the above invention, the specific details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is to automatically control by a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in the field; the above only describes some exemplary embodiments of the present invention by way of explanation. Undoubtedly, for ordinary technicians in the field, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A printed circuit board splitter, comprising a machine base (1), a slitting mechanism installed inside the machine base (1), and a conveying mechanism (3) installed on the inner wall of the bottom of the machine base (1), characterized in that: Also includes: An operating table (4), which is installed inside the machine base (1) and is used to place a substrate to be processed; A fixing mechanism, which is provided in plurality and is arranged on one side of the operating table (4) and is used to fix the portion to be cut off before the substrate is cut; A positioning mechanism, which is installed inside the machine base (1) and connected to the fixing mechanism, and is used to adjust the position of each cut circuit board; A grinding mechanism, which is installed inside the machine base (1) and is provided with two grinding mechanisms, and is used to perform grinding processing on two cut surfaces of the circuit board respectively; The edge-changing mechanism is connected to the fixing mechanism and is used to drive the circuit board to rotate 180° after one polishing; A cleaning mechanism, which is arranged on the top of the conveying mechanism (3) and is used to clean waste materials generated by cutting and grinding; The positioning mechanism comprises a driving shaft (15) rotatably connected to the inner wall of the machine base (1) and a driving bar (16) fixedly sleeved on the outside of the driving shaft (15); The driving bar (16) is a cross-shaped structure, and structural grooves (17) are provided on the outer walls of four sides of the driving bar (16); The number of the fixing mechanisms is four, and the four fixing mechanisms are respectively installed on the inner sides of four structural grooves (17); A cover body (18) is installed on the inner wall of one side of the machine base (1), a second motor is installed inside the cover body (18), and an output end of the second motor is fixedly connected to one end of the drive shaft (15); The fixing mechanism comprises a bidirectional screw rod (19) rotatably connected to the interior of the structural groove (17), a third motor (20) mounted on the outer wall of the driving bar (16), and two linkage plates (21) screwed to the exterior of the bidirectional screw rod (19); The output end of the third motor (20) is fixedly connected to one end of the bidirectional screw rod (19); A plurality of second guide rods are fixedly connected inside the structural groove (17), and the linkage plate (21) is slidably sleeved outside the second guide rods; One end of each of the two linkage plates (21) is fixedly connected to a fixing strip (22), and a plurality of clamping plates (23) are rotatably connected to the outer walls of the two fixing strips (22) on opposite sides; A plurality of transmission shafts (24) are rotatably connected inside the two fixing bars (22), and one end of the transmission shaft (24) is fixedly connected to the outer wall of the clamping plate (23); The side-changing mechanism comprises two support bars (30) fixedly connected to the outer wall of the driving bar (16), a third screw rod (31) rotatably connected inside the two support bars (30), and a driven shaft (32) rotatably connected to one end of the driving bar (16) close to the cover body (18); A plurality of racks (33) are threadedly connected to the outside of the third screw rod (31), a fourth guide rod is fixedly connected between the two support bars (30), and the racks (33) are slidably sleeved on the outside of the fourth guide rod; A plurality of transmission shafts (24) inside one of the fixed bars (22) are all fixedly sleeved with first gears (34) on the outside, and the plurality of first gears (34) are respectively meshed with a plurality of racks (33); The third screw rod (31) is transmission-connected to the driven shaft (32) via a fourth pulley assembly (35); a second gear (36) is fixedly sleeved on the outside of the driven shaft (32); A tooth arc (37) is fixedly connected to the outer wall of the cover body (18), and the second gears (36) in the plurality of edge-changing mechanisms mesh with the tooth arcs (37) in sequence during the rotation of the driving bar (16).

2. A printed circuit board depaneling machine according to claim 1, characterized in that: A first cylinder (5) is installed on both sides of the operating table (4), and a pressure plate (6) with an L-shaped structure is installed on the top of the first cylinder (5); A second cylinder (7) is mounted on the inner wall of the top of the base (1); a connecting block (8) is mounted on the extended end of the second cylinder (7); a plurality of connecting rods (9) are slidably connected inside the connecting block (8); a push plate (10) is fixedly connected to the bottom ends of the plurality of connecting rods (9); and a spring is sleeved outside the connecting rod (9).

3. A printed circuit board depaneling machine according to claim 2, characterized in that: The slitting mechanism comprises a cutting machine (2), a first screw rod (11) rotatably connected to the inner wall of the machine base (1), and a first motor (12) mounted on the inner wall of one side of the machine base (1); The output shaft of the first motor (12) is transmission-connected to the first screw rod (11) via a first pulley assembly (13); The first screw rod (11) is externally threaded with a first slide seat (14), and the cutting machine (2) is mounted at the bottom of the first slide seat (14); A first guide rod is also provided below the first screw rod (11), the first guide rod is fixedly connected to the inner wall of the machine base (1), and the first sliding seat (14) is slidably sleeved on the outside of the first guide rod.

4. A printed circuit board depaneling machine according to claim 3, characterized in that: The two grinding mechanisms are respectively located above the driving bar (16) and on a side away from the operating table (4); The grinding mechanism comprises a second screw rod (25) rotatably connected to the inner wall of the machine base (1), a second slide seat (26) screwed to the outside of the second screw rod (25), and a grinder (27) mounted on the outer wall of the second slide seat (26); A second screw rod (25) in one of the grinding mechanisms is transmission-connected to an output shaft of the first motor (12) via a second pulley assembly (28), and two of the second screw rods (25) are transmission-connected to each other via a third pulley assembly (29); The grinders (27) in the two grinding mechanisms are both arranged toward the driving bar (16); A third guide rod is also slidably connected inside the second sliding seat (26), and the third guide rod is fixedly connected to the inner wall of the machine base (1).

5. A printed circuit board depaneling machine according to claim 4, characterized in that: The cleaning mechanism comprises a dust suction nozzle (38) arranged at the top of the conveying mechanism (3) and a dust suction pipe (39) installed at the top of the dust suction nozzle (38); the dust suction nozzle (38) is installed at the bottom of a second slide seat (26) in another grinding mechanism.

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