Pin shaping mechanism and use method thereof

Abstract

The invention discloses a pin shaping mechanism and a use method thereof, and relates to the technical field of metal wire processing, and the pin shaping mechanism comprises a mounting seat used for positioning a circuit board; and the trimming mechanism is used for trimming the pins. According to the invention, the trimming mechanism is arranged to realize bending and trimming of the pins, so that the pins are not contacted with adjacent electronic components and circuit structures, and damage to the electronic components and short circuit risks are avoided; the pins are bent and trimmed, so that the bent pins are matched with the circuit board to form a clamping effect on the soldering tin, and the pins cannot be directly pulled out from the circuit board under the influence of vibration when the soldering tin and the pins are loosened due to vibration of the electronic component; at the moment, the electronic component can still be normally used after slight loosening, and the problem of circuit break caused by separation of the electronic component and the circuit board is further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of metal wire processing, and particularly relates to a pin shaping mechanism and a using method thereof. Background Art

[0002] Pin shaping refers to the process of adjusting, correcting, or processing the pins of electronic components to meet specific installation requirements or mechanical connection needs.

[0003] In the prior art, for the shaping work after pin soldering, it is mainly to remove the redundant pin parts to improve the safety and aesthetics of the circuit board; in the existing pin shaping process, the pins are usually kept in a straight state after passing through the holes of the circuit board and being soldered with solder by means of cutting with a tool.

[0004] However, the above-mentioned pin shaping mechanism after pin soldering still has the following defects during use: (1) Currently, the pin cutting and trimming operations usually use metal tools for cutting. However, when the tool wears, it is easy to cause serious deformation at the trimming position during the process of trimming the pins, and sharp edges are left at the trimming place, which are likely to scratch or damage other electronic components or scratch the insulating layer, resulting in damage to the insulating material and thus causing electrical failures; (2) Since the electronic component has a certain weight and is only connected to the circuit board through the pins, when the device is vibrated, the connection between the pins and the solder is likely to become loose; especially when the connection part between the pins and the solder remains straight, the electronic component is likely to cause the pins to be directly pulled out from the solder during vibration, thus causing an open circuit problem. Summary of the Invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide a pin shaping mechanism and a using method thereof, which are used to solve the problem that when the connection between the pins and the solder becomes loose, the vibration of the electronic component is likely to cause the separation of the pins and the solder, resulting in a short circuit problem as mentioned in the above background art.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A pin shaping mechanism includes a mounting base for positioning a circuit board; it further includes a trimming mechanism for trimming pins; the trimming mechanism includes: A positioning seat, the positioning seat is arranged above the mounting base, and a receiving groove adapted to the pins on the circuit board is opened on the positioning seat, and the pins are clamped to the positioning seat through the receiving groove; A bending mechanism, the bending mechanism is arranged on the positioning seat; the bending mechanism is used to bend the pins so that the pins form a stepped bending structure with at least two segments; and a shearing mechanism, which is arranged on the positioning seat, and the shearing mechanism is connected to the bending mechanism. The shearing mechanism is used for shearing the bent pins to retain the stepped bending structure of at least one section of the pins.

[0007] Preferably, the bending mechanism includes a mounting frame, a pushing plate, a stopper, and a driving mechanism; the mounting frame is slidably connected to the positioning seat, the pushing plate is arranged on the mounting frame, and the stopper is arranged on the positioning seat; when the pin is clamped with the receiving groove, the pushing plate and the stopper are respectively arranged on opposite sides of the pin; the driving mechanism is arranged on the positioning seat, and the driving mechanism is used for pushing the pushing plate to move so as to bend the pin, and further make the end of the pin perpendicular to the plane of the circuit board to form a stepped bending structure.

[0008] Preferably, the driving mechanism includes a motor, a lead screw, and a connecting block; the motor is mounted on the positioning seat, the lead screw is rotatably connected to the positioning seat, the output end of the motor is coaxially connected to the lead screw, the connecting block is threadedly sleeved on the lead screw, the connecting block is fixedly arranged on the mounting frame, and the moving direction of the mounting frame is parallel to the axis of the lead screw.

[0009] Preferably, the shearing mechanism includes a dislocation mechanism, a second cutter, and at least a pair of first cutters; the second cutter and at least a pair of the first cutters are arranged on the mounting frame, the second cutter and the first cutters are in the same plane, and the second cutter is parallel to the cross-section of the pin; the pushing plate is hinged to the mounting frame; when the mounting frame moves, the dislocation mechanism is used for driving the pushing plate to rotate to allow the second cutter and the first cutters to shear the pin; The first cutter includes an arc-shaped cutting edge portion and a straight cutting edge portion; the arc-shaped cutting edge portion is connected to the straight cutting edge portion, the distance between the arc-shaped cutting edge portions on the two first cutters is greater than the width of the pin, and the distance between the straight cutting edge portions on the two first cutters is less than the width of the pin.

[0010] Preferably, the dislocation mechanism includes a rack, a spur gear, and a sector gear; the rack is arranged on the positioning seat, the rack is arranged parallel to the moving direction of the mounting frame, the spur gear is rotatably connected to the mounting frame; when the mounting frame moves to drive the spur gear to contact the rack, as the mounting frame continues to move, the rack drives the spur gear to rotate; the sector gear is fixedly arranged on the pushing plate, and the spur gear is meshed with the sector gear; the spur gear is used for driving the pushing plate to rotate through the sector gear.

[0011] Preferably, the trimming mechanism further includes an adjusting mechanism; the adjusting mechanism is used for bending the burrs generated after the shearing mechanism shears the pins, that is, when the shearing mechanism resets after completing the shearing of the pins, it drives the adjusting mechanism to bend the burrs generated after the shearing of the pins.

[0012] Preferably, the adjustment mechanism includes a sliding plate, a rotating plate and a linkage mechanism; the sliding plate is slidably connected to the stopper, the rotating plate is hinged to the sliding plate, and a torsion spring is arranged at the hinged position between the rotating plate and the sliding plate, and the torsion spring is used to provide a thrust for the rotating plate to push the burr to bend; the linkage mechanism is used to drive the sliding plate to slide along the direction perpendicular to the shearing mechanism.

[0013] Preferably, the linkage mechanism includes a rotating rod, a slider, a convex block and a protruding portion; a rotating shaft is rotatably connected to one side of the stopper, and the rotating rod is arranged on the rotating shaft; the slider is arranged on the sliding plate, a chute is formed on the rotating rod, and the rotating plate is slidably connected to the chute; the convex block is arranged on the rotating rod, the protruding portion is arranged on the mounting frame, and the projections of the convex block and the protruding portion in the moving direction of the mounting frame partially overlap; when the movement of the mounting frame drives the protruding portion to contact the convex block, the protruding portion is used to push the rotating rod to rotate through the convex block.

[0014] Preferably, the pin shaping mechanism further includes an alignment mechanism, and the alignment mechanism is used to drive the positioning seat to move so that the pins are aligned and clamped with the receiving grooves; the alignment mechanism includes an x-axis linear module, a y-axis linear module, a mounting plate, a first cylinder and a second cylinder; the x-axis linear module is arranged on the mounting seat, the y-axis linear module is arranged at the output end of the x-axis linear module, the mounting plate is arranged at the output end of the y-axis linear module, the first cylinder is arranged on the mounting plate, the second cylinder is arranged at the output end of the first cylinder, and the output end of the second cylinder is connected to the positioning seat.

[0015] A method for using a pin shaping mechanism includes the following steps: Step 1, moving and aligning: driving the positioning seat to move so that the receiving groove on the positioning seat is aligned and clamped with one of the pins to be trimmed; Step 2, pin bending: bending the pins through the bending mechanism to form a stepped structure; Step 3, pin trimming: as the bending mechanism continues to move, driving the shearing mechanism to shear the redundant parts on the pins, and the pins form an inverted L-shaped bending structure with the short side facing down.

[0016] The beneficial effects of the present invention: 1. By setting the trimming mechanism to realize the bending and trimming of the pins, it will not contact the adjacent electronic components and circuit structures, and will not cause damage to the electronic components and the risk of short circuit; and by bending and trimming the pins, the bent pins cooperate with the circuit board to form a clamping effect on the solder. When the electronic components are vibrated and the solder becomes loose from the pins, the pins will not be directly pulled out from the circuit board under the influence of vibration. At this time, the electronic components can still be used normally even if there is a slight looseness, thereby reducing the problem of open circuit caused by the detachment of the electronic components from the circuit board; 2. By setting up a bending mechanism, during the process of bending the pins, the push plate is used to push the pins so that they are not completely parallel to the circuit board plane and then the pins are bent in the reverse direction by the stopper. This can reduce the problem that the push plate pushing the pins to bend is too close to the electronic components or the insulating layer, and reduce the damage to other electronic components or the scratching of the insulating layer. 3. By setting up a shearing mechanism, during trimming, since both the two first cutters and the second cutter move towards the center position of the pins for trimming, no burrs will be generated on the outer sides in contact with the first cutters and the second cutter. That is, only at the cutting end surface position where the second cutter cuts off the pins will burrs be generated. Therefore, the purpose of reducing burr generation can be achieved.

[0017] 4. By setting up an adjustment mechanism, during the process of the shearing mechanism completing shearing and resetting, it can drive the adjustment mechanism to bend the burrs generated after trimming on the pins towards the trimming surface of the pins, achieving the reduction of burr protrusion, and further reducing the influence of burrs on the electronic components and the insulating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the drawings.

[0019] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the overall three-dimensional structure schematic diagram of the present invention with a partial cutaway view; Figure 3 is the present invention Figure 2 the enlarged structure schematic diagram of area A in; Figure 4 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism and part of the alignment mechanism of the present invention; Figure 5 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism from the first perspective of the present invention; Figure 6 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism from the second perspective of the present invention; Figure 7 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism of the present invention; Figure 8 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism in the shearing state of the present invention; Figure 9 is the present invention Figure 8 the enlarged structure schematic diagram of area B in; Figure 10 is the enlarged three-dimensional structure schematic diagram of the trimming mechanism in the adjustment state of the present invention; Figure 11 is the present invention Figure 10 the enlarged structure schematic diagram of area C in; Figure 12It is a schematic diagram of a three-dimensional enlarged structure with a partial section of the trimming mechanism adjustment state of the present invention; Figure 13 It is a schematic diagram of a three-dimensional enlarged structure of the mounting bracket of the present invention; Figure 14 It is a schematic diagram of a top view enlarged structure of the mounting bracket of the present invention; Figure 15 It is a schematic diagram of a three-dimensional enlarged structure of a partial structure of the adjustment mechanism of the present invention; Figure 16 It is a flowchart of the method of the present invention.

[0020] In the figure: 1, mounting base; 2, circuit board; 3, pin; 4, trimming mechanism; 41, positioning seat; 42, receiving groove; 43, bending mechanism; 431, mounting bracket; 432, push plate; 433, stop block; 434, driving mechanism; 4341, motor; 4342, lead screw; 4343, connecting block; 44, shearing mechanism; 441, dislocation mechanism; 4411, rack; 4412, spur gear; 4413, sector gear; 442, first cutter; 443, second cutter; 45, adjustment mechanism; 451, slide plate; 452, rotating plate; 453, linkage mechanism; 4531, rotating rod; 4532, chute; 4533, slider; 4534, convex block; 4535, protruding part; 5, alignment mechanism; 51, x-axis linear module; 52, y-axis linear module; 53, mounting plate; 54, first cylinder; 55, second cylinder. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] As Figure 1-15 shown, a pin shaping mechanism, as Figure 1-2 , Figure 4 and Figure 7As shown in the figure, it includes a mounting base 1 for positioning the circuit board 2; it also includes a trimming mechanism 4 for trimming the pins 3; the trimming mechanism 4 includes: a positioning base 41, the positioning base 41 is arranged above the mounting base 1, and a receiving groove 42 adapted to the pins 3 on the circuit board 2 is provided on the positioning base 41, and the pins 3 are clamped to the positioning base 41 through the receiving groove 42; a bending mechanism 43, the bending mechanism 43 is arranged on the positioning base 41; the bending mechanism 43 is used to bend the pins 3 so that the pins 3 form a stepped bending structure with at least two segments; and a shearing mechanism 44, the shearing mechanism 44 is arranged on the positioning base 41, and the shearing mechanism 44 is connected to the bending mechanism 43, and the shearing mechanism 44 is used to shear the bent pins 3 in multiple directions to retain at least one segment of the stepped bending structure of the pins 3 and reduce the generation of burrs.

[0023] It should be noted that the positioning base 41 is clamped to the pins 3 through the receiving groove 42. The receiving groove 42 includes a groove for misaligning with the solder and a vertical groove for adapting to the pins 3. Through the receiving groove 42, the positioning base 41 is clamped to the pins 3 in a positioning manner; then the bending mechanism 43 is used to push the pins 3 to bend. At this time, the solder on the pins 3 is protected by the receiving groove 42. When the pins 3 are bent, the welding position will not be damaged by the force. The pins 3 are bent into a stepped structure by the bending mechanism 43. Then, as the bending mechanism 43 continues to move, it drives the shearing mechanism 44 to trim the excess part of the stepped pins 3, so that the pins 3 change from the stepped structure to an inverted L-shaped bending structure with the short side facing down; at this time, the length of the bending structure formed by the pins 3 in the direction parallel to the plane of the circuit board 2 and the length in the direction perpendicular to the plane of the circuit board 2 are both short, and it will not contact the adjacent electronic components and circuit structures, and will not cause damage to the electronic components and short-circuit risks, and the overall space occupation is small, which is convenient for the assembly of the circuit board 2; Through the setting of the shearing mechanism 44, the cross-section of the pins 3 is trimmed in multiple directions, so that the trimming is close to the center line of the pins 3, achieving the purpose of reducing the generation of burrs on the edges of the pins 3, and further reducing the problems of damaging other electronic components or scratching the insulating layer; By bending and trimming the pins 3, the bent pins 3 cooperate with the circuit board 2 to form a clamping effect on the solder. When the electronic components are vibrated and the solder becomes loose from the pins 3, the pins 3 will not be directly pulled out from the circuit board 2 under the influence of vibration. At this time, even if the electronic components are slightly loose, they can still be used normally, thus reducing the problem of open circuit caused by the detachment of the electronic components from the circuit board 2.

[0024] Such as Figure 1-5As shown in the figure, the bending mechanism 43 includes a mounting bracket 431, a push plate 432, a stop block 433, and a driving mechanism 434; the mounting bracket 431 is slidably connected to the positioning seat 41, the push plate 432 is arranged on the mounting bracket 431, and the stop block 433 is arranged on the positioning seat 41; when the pin 3 is clamped with the receiving groove 42, the push plate 432 and the stop block 433 are respectively arranged on opposite sides of the pin 3; the driving mechanism 434 is arranged on the positioning seat 41, and the driving mechanism 434 is used to push the push plate 432 to move, so that the pin 3 is bent, and further the end of the pin 3 is perpendicular to the plane of the circuit board 2, forming a stepped bending structure.

[0025] It should be noted that when the pin 3 is clamped and aligned with the receiving groove 42, the driving mechanism 434 is used to push the push plate 432 on the mounting bracket 431 to move, so that the push plate 432 abuts against one side of the pin 3 and pushes the pin 3 to bend in a direction parallel to the plane of the circuit board 2 until the other side of the pin 3 abuts against the stop block 433, and as the push plate 432 pushes the pin 3 to bend, with the cooperation of the stop block 433, the pin 3 is bent in a direction perpendicular to the plane of the circuit board 2 until the pin 3 is bent into a stepped structure; during the process of bending the pin 3, by pushing the pin 3 with the push plate 432 and bending the pin 3 in the reverse direction by the stop block 433 before the pin 3 is completely parallel to the plane of the circuit board 2, the problem that the push plate 432 pushes the pin 3 to bend and is too close to the electronic components or the insulating layer, reducing the damage to other electronic components or scratching the insulating layer can be reduced.

[0026] As Figure 4-6 shown, it can be understood that the present application does not limit the specific structure and installation method of the driving mechanism 434. The following only provides a feasible specific solution; the driving mechanism 434 includes a motor 4341, a lead screw 4342, and a connecting block 4343; the motor 4341 is installed on the positioning seat 41, the lead screw 4342 is rotatably connected to the positioning seat 41, the output end of the motor 4341 is coaxially connected to the lead screw 4342, the connecting block 4343 is threadedly sleeved on the lead screw 4342, the connecting block 4343 is fixedly arranged on the mounting bracket 431, and the moving direction of the mounting bracket 431 is parallel to the axis of the lead screw 4342.

[0027] It should be noted that when it is necessary to drive the push plate 432 to move and bend the pin 3, the motor 4341 is used to drive the lead screw 4342 to rotate, the lead screw 4342 drives the connecting block 4343 to move, and further drives the push plate 432 to slide on the positioning seat 41, thereby achieving the purpose of pushing the pin 3 to bend.

[0028] As Figure 7 and Figure 14As shown, the shearing mechanism 44 includes a dislocation mechanism 441, a second cutting tool 443, and at least a pair of first cutting tools 442. The second cutting tool 443 and at least a pair of first cutting tools 442 are arranged on the mounting bracket 431. The second cutting tool 443 and the first cutting tools 442 are in the same plane, and the second cutting tool 443 is parallel to the cross-section of the lead 3 (as Figure 4 shown). The push plate 432 is hinged to the mounting bracket 431. When the mounting bracket 431 moves, the dislocation mechanism 441 is used to drive the push plate 432 to rotate, so as to allow the second cutting tool 443 and the first cutting tools 442 to shear the lead 3. The first cutting tool 442 includes an arc-shaped cutting edge portion and a straight cutting edge portion. The arc-shaped cutting edge portion is connected to the straight cutting edge portion. The distance D 1 between the arc-shaped cutting edge portions on the two first cutting tools 442 is greater than the width H of the lead 3, and the distance D 2 between the straight cutting edge portions on the two first cutting tools 442 is less than the width H of the lead 3.

[0029] It should be noted that the dislocation mechanism 441 is used to stagger the push plate 432 from the lead 3, so as to allow the first cutting tool 442 and the second cutting tool 443 to trim the lead 3 as the mounting bracket 431 continues to move. As the driving mechanism 434 pushes the mounting bracket 431 to continue moving, the dislocation mechanism 441 drives the push plate 432 to rotate, so that the push plate 432 is separated from the lead 3. Then, as the mounting bracket 431 continues to move, the first cutting tool 442 first contacts the two sides of the lead 3. The two sides of the lead 3 are trimmed by the first cutting tool 442. Through the cooperation of the arc-shaped cutting edge portion and the straight cutting edge portion on the first cutting tool 442, the outer side of the lead 3 is trimmed inward. Then, the second cutting tool 443 further trims the lead 3 until the redundant part of the lead 3 is completely cut off. During trimming, since the two first cutting tools 442 and one second cutting tool 443 all move towards the center position of the lead 3 for trimming, no burrs will be generated on the outer sides in contact with the first cutting tool 442 and the second cutting tool 443. That is, only burrs will be generated at the cutting end surface position when the second cutting tool 443 cuts off the lead 3. Therefore, the purpose of reducing burr generation can be achieved.

[0030] As Figure 7-9 shown, the dislocation mechanism 441 includes a rack 4411, a spur gear 4412, and a sector gear 4413. The rack 4411 is arranged on the positioning seat 41. The rack 4411 is arranged parallel to the moving direction of the mounting bracket 431. The spur gear 4412 is rotatably connected to the mounting bracket 431. When the mounting bracket 431 moves to drive the spur gear 4412 to contact the rack 4411, as the mounting bracket 431 continues to move, the rack 4411 drives the spur gear 4412 to rotate. The sector gear 4413 is fixed to the push plate 432, and the spur gear 4412 meshes with the sector gear 4413. The spur gear 4412 is used to drive the push plate 432 to rotate through the sector gear 4413.

[0031] It should be noted that when the driving mechanism 434 (as shown in Figure 4 ) drives the mounting bracket 431 to move, the spur gear 4412 is driven to move. When the spur gear 4412 meshes with the dislocation mechanism 441, as the mounting bracket 431 continues to move, the spur gear 4412 is driven to rotate by the rack 4411, and then the sector gear 4413 is driven to rotate in the reverse direction by the spur gear 4412, and then the push plate 432 is driven to rotate, so that the side of the push plate 432 in contact with the pin 3 is away from the pin 3 (as shown in Figure 4 ), which does not affect the continuous driving of the mounting bracket 431 to move. At this time, the first cutter 442 and the second cutter 443 contact the pin 3 successively, and the pin 3 is trimmed by the first cutter 442 and the second cutter 443.

[0032] As shown in Figure 4 and Figure 10-11 , the trimming mechanism 4 further includes an adjusting mechanism 45; the adjusting mechanism 45 is used for burring the burrs generated after the pin 3 is sheared by the bending and shearing mechanism 44, that is, when the shearing mechanism 44 resets after completing the shearing of the pin 3, the adjusting mechanism 45 is driven to bend the burrs generated after the shearing on the pin 3.

[0033] It should be noted that through the setting of the adjusting mechanism 45, when the driving mechanism 434 (as shown in Figure 4 ) pushes the mounting bracket 431 to move, so that after the shearing mechanism 44 completes the trimming of the pin 3, the driving mechanism 434 drives the mounting bracket 431 to move and reset. At this time, the adjusting mechanism 45 will be driven to move, so that the adjusting mechanism 45 bends the burrs generated after the trimming on the pin 3 into the trimming surface of the pin 3, realizing the reduction of burr protrusion and the reduction of the influence of burrs on electronic components and the insulating layer.

[0034] As shown in Figure 4 and Figure 9-13 , the adjusting mechanism 45 includes a sliding plate 451, a rotating plate 452 and a linkage mechanism 453; the sliding plate 451 is slidably connected to the block 433, the rotating plate 452 is hinged to the sliding plate 451, and a torsion spring is arranged at the hinged position between the rotating plate 452 and the sliding plate 451. The torsion spring is used to provide a thrust for the rotating plate 452 to push the burr to bend; when the torsion spring has no elastic force, that is, when there is no thrust on the rotating plate 452, the angle between the direction of the sliding plate 451 away from the circuit board 2 (as shown in Figure 1 ) and the rotating plate 452 is an acute angle. That is, when the pin 3 is driven to bend, the inclined rotating plate 452 first contacts the pin 3. As the pin 3 is pushed to bend, the pin 3 will first push the rotating plate 452, so that the rotating plate 452 rotates to a state parallel to the sliding plate 451. At this time, the torsion spring is in a compressed state; the linkage mechanism 453 is used to drive the sliding plate 451 to slide in a direction perpendicular to the movement of the shearing mechanism 44.

[0035] It should be noted that when the shearing mechanism 44 is about to complete the trimming of the pin 3, it will drive the linkage mechanism 453 to move forward, drive the slide plate 451 to approach the circuit board 2 through the linkage mechanism 453, so that the slide plate 451 is located below the first cutter 442 and the second cutter 443. As the first cutter 442 and the second cutter 443 continue to move to trim the pin 3, the first cutter 442 and the second cutter 443 will be misaligned with the top of the rotating plate 452, allowing the second cutter 443 to completely cut off the pin 3; When the driving mechanism 434 drives the mounting bracket 431 to reset and drives the shearing mechanism 44 to reset, it will drive the linkage mechanism 453 to move in the reverse direction, that is, drive the slide plate 451 to move away from the circuit board 2. At this time, the rotating plate 452 on the slide plate 451 approaches the cut surface of the pin 3, and under the action of the torsion spring, it will push the burrs upward and bend close to the cut surface, realizing the reduction of burr protrusion and the reduction of the impact on electronic components and the insulating layer.

[0036] As Figure 12-13 and Figure 15 shown, the linkage mechanism 453 includes a rotating rod 4531, a slider 4533, a convex block 4534 and a protruding portion 4535; a rotating shaft is rotatably connected to one side of the stop block 433, and the rotating rod 4531 is arranged on the rotating shaft; the slider 4533 is arranged on the slide plate 451, a chute 4532 is formed on the rotating rod 4531, and the rotating plate 452 is slidably connected to the chute 4532; the convex block 4534 is arranged on the rotating rod 4531, the protruding portion 4535 is arranged on the mounting bracket 431, and the projections of the convex block 4534 and the protruding portion 4535 in the moving direction of the mounting bracket 431 partially overlap; when the mounting bracket 431 moves to drive the protruding portion 4535 to contact the convex block 4534, the protruding portion 4535 is used to push the rotating rod 4531 to rotate through the convex block 4534.

[0037] It should be noted that when the driving mechanism 434 (as Figure 4 shown) drives the mounting bracket 431 to approach the linkage mechanism 453, the protruding portion 4535 on the mounting bracket 431 approaches the convex block 4534 until the protruding portion 4535 pushes the convex block 4534 to move, thereby driving the rotating rod 4531 to rotate forward. Under the cooperation of the chute 4532 and the slider 4533, the slide plate 451 is pushed to approach the circuit board 2 (as Figure 1 shown), so that a certain misalignment difference is generated between the rotating plate 452 and the first cutter 442, which is convenient for the first cutter 442 and the second cutter 443 to cut off the pin 3. A return spring is arranged between the slide plate 451 and the stop block 433, and at this time the return spring is compressed by force; at this time, as the mounting bracket 431 continues to move, the protruding portion 4535 on the mounting bracket 431 is separated from the convex block 4534, and at this time the slide plate 451 is driven to automatically reset under the action of the return spring; When the first cutting knife 442 and the second cutting knife 443 move back to their original positions after completing the cutting of the pin 3, the protruding portion 4535 is driven to contact the bump 4534 again, thereby pushing the rotating rod 4531 to rotate in the reverse direction. Under the cooperation of the sliding groove 4532 and the slider 4533, the sliding plate 451 is driven to move away from the circuit board 2, and then the rotating plate 452 is driven to approach the cutting surface on the pin 3 until, under the action of the torsion spring, the rotating plate 452 rotates to push the burrs towards the cutting surface of the pin 3 (as Figure 1 shown), so as to reduce the risk of burrs affecting the electronic components and the insulating layer.

[0038] As Figure 1-4 shown, the pin shaping mechanism further includes an alignment mechanism 5. It can be understood that the specific structure and installation method of the alignment mechanism 5 in this application are not limited. The following only provides a feasible specific technical solution; the alignment mechanism 5 is used to drive the positioning seat 41 to move so that the pin 3 is aligned and clamped with the receiving groove 42; the alignment mechanism 5 includes an x-axis linear module 51, a y-axis linear module 52, a mounting plate 53, a first cylinder 54, and a second cylinder 55; the x-axis linear module 51 is arranged on the mounting seat 1, the y-axis linear module 52 is arranged at the output end of the x-axis linear module 51, the mounting plate 53 is arranged at the output end of the y-axis linear module 52, the first cylinder 54 is arranged on the mounting plate 53, the second cylinder 55 is arranged at the output end of the first cylinder 54, and the output end of the second cylinder 55 is connected to the positioning seat 41.

[0039] It should be noted that when driving the receiving groove 42 to be clamped and aligned with the pin 3, the positioning seat 41 is driven to move parallel in the plane direction of the circuit board 2 through the x-axis linear module 51 and the y-axis linear module 52. The positioning seat 41 is driven to approach or move away from the circuit board 2 through the first cylinder 54, and then the receiving groove 42 on the positioning seat 41 is accurately driven to be clamped and aligned with the pin 3 through the second cylinder 55, so as to complete the positioning work before the pin 3 is bent and trimmed.

[0040] As Figure 1-16 shown, a method for using a pin shaping mechanism includes the following steps: Step 1, moving and aligning: Drive the positioning seat 41 to move so that the receiving groove 42 on the positioning seat 41 is aligned and clamped with one of the pins 3 to be trimmed; Step 2, pin bending: Bend the pin 3 through the bending mechanism 43 to form a stepped structure; Step 3, pin trimming: As the bending mechanism 43 continues to move, drive the shearing mechanism 44 to shear the redundant part on the pin 3, and the pin 3 forms an inverted L-shaped bending structure with the short side facing downwards; the straight-line distance between the receiving groove 42 and the stopper 433 is the maximum length of the L-shaped long side of the bending structure of the pin 3; it can be understood that the above-mentioned short side is relative to the long side, that is, the length of the short side is less than the length of the long side.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, 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 orientation and specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A pin shaping mechanism, comprising a mounting seat (1) for positioning a circuit board (2); characterized in that: It also includes a trimming mechanism (4) for trimming the pin (3); the trimming mechanism (4) includes: A positioning seat (41), the positioning seat (41) being arranged above the mounting seat (1), the positioning seat (41) being provided with a receiving groove (42) adapted to the pin (3) on the circuit board (2), the pin (3) being snap-connected to the positioning seat (41) via the receiving groove (42); A bending mechanism (43), the bending mechanism (43) being arranged on the positioning seat (41); the bending mechanism (43) being used for bending the pin (3) so that the pin (3) forms a stepped bending structure with at least two sections; and a shearing mechanism (44), wherein the shearing mechanism (44) is arranged on the positioning seat (41), and the shearing mechanism (44) is connected to the bending mechanism (43), and the shearing mechanism (44) is used to shear the bent pin (3) to retain the stepped bending structure of at least one section of the pin (3).

2. A pin shaping mechanism according to claim 1, characterized in that: The bending mechanism (43) comprises a mounting frame (431), a push plate (432), a stopper (433) and a driving mechanism (434); the mounting frame (431) is slidably connected to the positioning seat (41), the push plate (432) is arranged on the mounting frame (431), and the stopper (433) is arranged on the positioning seat (41); when the pin (3) is engaged with the receiving groove (42), the push plate (432) and the stopper (433) are respectively arranged on two opposite sides of the pin (3); the driving mechanism (434) is arranged on the positioning seat (41), and the driving mechanism (434) is used to push the push plate (432) to move, so that the pin (3) is bent, thereby making the end of the pin (3) perpendicular to the plane of the circuit board (2), forming a stepped bending structure.

3. A pin shaping mechanism according to claim 2, characterized in that: The driving mechanism (434) comprises a motor (4341), a screw rod (4342) and a connecting block (4343); the motor (4341) is mounted on the positioning seat (41); the screw rod (4342) is rotatably connected to the positioning seat (41); the output end of the motor (4341) is coaxially connected to the screw rod (4342); the connecting block (4343) is threadedly sleeved on the screw rod (4342); the connecting block (4343) is fixedly mounted on the mounting frame (431); and the moving direction of the mounting frame (431) is parallel to the axis of the screw rod (4342).

4. A pin shaping mechanism according to claim 1, characterized in that: The shearing mechanism (44) comprises a dislocation mechanism (441), a second cutter (443), and at least one pair of first cutters (442); the second cutter (443) and at least one pair of the first cutters (442) are arranged on a mounting frame (431), the second cutter (443) and the first cutter (442) are located in the same plane, and the second cutter (443) is parallel to the cross section of the pin (3); the push plate (432) is hinged to the mounting frame (431); when the mounting frame (431) moves, the dislocation mechanism (441) is used to drive the push plate (432) to rotate, so as to allow the second cutter (443) and the first cutter (442) to shear the pin (3); The first cutter (442) comprises an arc-shaped cutting edge portion and a straight cutting edge portion; the arc-shaped cutting edge portion is connected to the straight cutting edge portion, the distance between the arc-shaped cutting edge portions on two of the first cutters (442) is greater than the width of the pin (3), and the distance between the straight cutting edge portions on two of the first cutters (442) is less than the width of the pin (3).

5. A pin shaping mechanism according to claim 4, characterized in that: The misalignment mechanism (441) comprises a rack (4411), a spur gear (4412) and a fan-shaped gear (4413); the rack (4411) is arranged on the positioning seat (41), the rack (4411) is arranged parallel to the moving direction of the mounting frame (431), and the spur gear (4412) is rotatably connected to the mounting frame (431); when the mounting frame (431) moves and drives the spur gear (4412) to collide with the rack (4411), as the mounting frame (431) continues to move, the rack (4411) drives the spur gear (4412) to rotate; the fan-shaped gear (4413) is fixed to the push plate (432), and the spur gear (4412) meshes with the fan-shaped gear (4413); the spur gear (4412) is used to drive the push plate (432) to rotate through the fan-shaped gear (4413).

6. A pin shaping mechanism according to claim 1, characterized in that: The trimming mechanism (4) further comprises an adjusting mechanism (45); the adjusting mechanism (45) is used to bend burrs generated after the shearing mechanism (44) shears the pin (3), that is, when the shearing mechanism (44) resets after completing the shearing of the pin (3), it drives the adjusting mechanism (45) to bend the burrs generated on the pin (3) after shearing.

7. A pin shaping mechanism according to claim 6, characterized in that: The adjustment mechanism (45) comprises a slide plate (451), a rotating plate (452) and a linkage mechanism (453); the slide plate (451) is slidably connected to the stopper (433); the rotating plate (452) is hinged to the slide plate (451); and a torsion spring is provided at a hinge position between the rotating plate (452) and the slide plate (451); the torsion spring is used to provide a thrust for the rotating plate (452) to push the burr to bend; and the linkage mechanism (453) is used to drive the slide plate (451) to slide in a direction perpendicular to the movement of the shearing mechanism (44).

8. A pin shaping mechanism according to claim 7, characterized in that: The linkage mechanism (453) comprises a rotating rod (4531), a sliding block (4533), a convex block (4534) and a protruding portion (4535); one side of the stopper (433) is rotatably connected to a rotating shaft, and the rotating rod (4531) is arranged on the rotating shaft; the sliding block (4533) is arranged on the sliding plate (451), a sliding groove (4532) is provided on the rotating rod (4531), and the rotating plate (452) is slidably connected to the sliding groove (4532); The protrusion (4534) is arranged on the rotating rod (4531), and the raised portion (4535) is arranged on the mounting frame (431); the protrusion (4534) and the raised portion (4535) partially overlap in projection in the moving direction of the mounting frame (431); when the mounting frame (431) moves to drive the raised portion (4535) to collide with the protrusion (4534), the protrusion (4535) is used to push the rotating rod (4531) to rotate through the protrusion (4534).

9. The pin shaping mechanism according to claim 1, characterized in that: The pin shaping mechanism further comprises an alignment mechanism (5), the alignment mechanism (5) being used for driving the positioning seat (41) to move so that the pin (3) and the receiving groove (42) are aligned and engaged; the alignment mechanism (5) comprises an x-axis linear module (51), a y-axis linear module (52), a mounting plate (53), a first cylinder (54) and a second cylinder (55); the x-axis linear module (51) is arranged on the mounting seat (1), the y-axis linear module (52) is arranged at the output end of the x-axis linear module (51), the mounting plate (53) is arranged at the output end of the y-axis linear module (52), the first cylinder (54) is arranged on the mounting plate (53), the second cylinder (55) is arranged at the output end of the first cylinder (54), and the output end of the second cylinder (55) is connected to the positioning seat (41).

10. A method for using a pin shaping mechanism according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: moving and aligning: driving the positioning seat (41) to move so that the receiving groove (42) on the positioning seat (41) is aligned and engaged with one of the pins (3) to be trimmed; Step 2: bending the pin: bending the pin (3) by means of a bending mechanism (43) to form a stepped structure; Step three, pin trimming: as the bending mechanism (43) continues to move, it drives the shearing mechanism (44) to shear the excess portion of the pin (3), so that the pin (3) forms an inverted L-shaped bending structure with the short side facing downward.

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