CN109787058B

CN109787058B - Automatic welding equipment for connecting wires of LED circuit board

Info

Publication number: CN109787058B
Application number: CN201910168154.4A
Authority: CN
Inventors: 伍贵华
Original assignee: Jiangxi Platinum Chuan Automation Technology Co ltd
Current assignee: Jiangxi Platinum Chuan Automation Technology Co ltd
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2023-08-18
Anticipated expiration: 2039-03-06
Also published as: CN109787058A

Abstract

The invention discloses automatic welding equipment for connecting wires of an LED circuit board, which comprises a rack, and a peeling mechanism, a welding mechanism and a transferring mechanism which are sequentially arranged on the rack and used for driving a lamp belt to move, wherein the peeling mechanism comprises a peeling device and a heating body, the heating body is provided with a peeling knife which can move in an opening of the peeling device, the peeling knife is heated and can be clung to the moving lamp belt, the welding mechanism comprises a wire pressing plate, a welding gun, a limiting needle and a movable and swinging wire pulling fork, the wire pulling fork can respectively bypass two connecting wire heads on the lamp belt which moves to a welding position to weld on formal wires of the limiting needle, and the transferring mechanism comprises a belt which can move back and forth, and an arm plate which can move back and forth along with the belt interval is connected on the belt.

Description

Automatic welding equipment for connecting wires of LED circuit board

Technical Field

The invention relates to the technical field related to circuit welding, in particular to LED circuit board connecting wire (lamp strip parallel wire) welding equipment.

Background

The LED lamp strip is divided into a flexible lamp strip and a hard lamp strip, wherein the flexible LED lamp strip is assembled by using an FPC as an assembly circuit board and using a patch LED, so that the thickness of a product is only the thickness of one coin, and the space is not occupied; the lamp can be cut off at will, can be prolonged at will, can not be influenced by luminescence, and has different specifications for different users. The FPC is soft, can be bent, folded and wound at will, and can move and stretch out and draw back at will in a three-dimensional space without breaking. The light-emitting diode is suitable for irregular places and places with narrow space, and is also suitable for parks, gardens, building outsides, roads, overpasses, automobiles, pools, advertisements, signboards and interior decorative grooves to be used as neon lights or for attractive appearance because the light-emitting diode can be bent and coiled at will. The various patterns are arbitrarily combined in the advertisement decoration. In the circuit board, FPC is used as the overcoat, has positive pole line and negative pole line on the overcoat, still has a connecting wire in the middle of the paster of cladding in the overcoat, cuts the connecting wire according to the length of lamp area design during the use and forms the section, will get rid of the epidermis of cladding positive pole line and negative pole line that is close to with cutting department connecting wire, makes positive pole line and negative pole line expose certain length, welds the both ends of every section connecting wire with positive pole line, negative pole line that exposes respectively, gets rid of unnecessary unwelded connecting wire head again, makes each section lamp area parallelly connected between positive pole line and negative pole line form the circuit. At present, the exposure of the positive electrode wires and the negative electrode wires of each section of lamp strip and the welding of the two ends of the connecting wire and the positive electrode wires and the negative electrode wires are mostly finished manually, so that the processing efficiency is low, the labor intensity is high, the labor hour cost is high, the welding quality is unstable, the quality problems of wrong welding, missing welding, false welding and the like are easy to occur, and the welding rework rate and the rejection rate are high.

Disclosure of Invention

Aiming at the problems in the manual skin breaking and welding of the lamp strip connecting wire, the positive electrode wire and the negative electrode wire in the prior art, the invention provides automatic welding equipment for the LED circuit board connecting wire, which can automatically finish skin breaking, welding and shearing of the lamp strip in sequence.

The technical scheme adopted by the invention is as follows: the automatic welding equipment for the connecting wire of the LED circuit board comprises a rack, a skin breaking mechanism, a welding mechanism and a transfer mechanism, wherein the skin breaking mechanism, the welding mechanism and the transfer mechanism are sequentially arranged on the rack, the transfer mechanism is used for driving a lamp belt to move, the skin breaking mechanism and the welding mechanism are provided with light sensors, the skin breaking mechanism is arranged on two sides of the lamp belt, the skin breaking mechanism comprises a skin remover and a heating body which can move left and right, front and back and up and down, the heating body is provided with a skin breaking knife which can move in an opening of the skin remover, and the skin breaking knife is heated and can be clung to the moving lamp belt, so that positive and negative polar lines on the lamp belt are exposed; the welding mechanism is arranged at two sides of the lamp strip at intervals and comprises a line pressing plate, a welding gun, a limiting needle and a line pulling fork capable of moving and swinging, and the line pulling fork can respectively bypass the limiting needle by two connecting line heads on the lamp strip moving to a welding position and is attached to exposed positive and negative electrode lines on the lamp strip for welding.

The transfer mechanism comprises a belt capable of moving back and forth, and an upper clamping head and a lower clamping head which can move back and forth along with the interval of the belt and can clamp and loosen the lamp belt in a rotating mode are connected to the belt.

The automatic welding equipment for the LED circuit board connecting wires further comprises a shearing mechanism arranged behind the welding mechanism, wherein the shearing mechanism comprises scissors capable of shearing off the unwelded connecting wire heads.

The transfer mechanism is arranged between the welding mechanism and the shearing mechanism.

The method comprises the following steps: the lamp strip with connecting wire heads at the front and the back of the two ends in the notch is placed in the guide plate, when the lamp strip moves to the position of the skin breaking mechanism, the servo motor stops working under the action of the optical sensor, the pre-pressing plate presses the lamp strip, the lamp strip stops moving, at the moment, the skin breaking knife on the skin breaking mechanism starts moving and is close to the lamp strip, the optical sensor sends out a signal, the skin breaking knife on the skin breaking mechanism moves for 6-10 mm under the action of the servo motor and the axial transmission screw rod, the wrapping on the positive and negative wires on the lamp strip is removed under the action of the heating breaking knife and is discharged outwards through the skin remover, the formal negative wire on the lamp strip is exposed for 6-10 mm, then the skin breaking knife is withdrawn, the right welding mechanism is started, the right welding mechanism works, the lamp strip is driven to continue to move forwards, when the lamp strip moves to the skin breaking position (front control structure) is positioned at the position of the right welding mechanism, the optical sensor sends out signals, the wire pulling fork on the right welding mechanism moves transversely to hook the front connecting wire head to move transversely (transversely is the width direction of the frame), at the moment, the limiting needle on the edge of the lamp belt descends, the wire pulling fork hooks the front connecting wire head to move forwards longitudinally (longitudinally is the length direction of the frame) to enable the front connecting wire head to be attached to the exposed positive wire (as shown in figure 5), the wire pressing plate descends to press the front connecting wire head, the welding gun descends to enable the welding wire to be heated and melted to weld the front connecting wire head and the positive wire together, after welding is finished, the wire pressing plate ascends, the upper chuck and the lower chuck of the right transferring mechanism are loosened and return to the original position, the lamp belt moves forwards under the action of the left transferring mechanism, when the lamp belt moves to the welding position of the shearing mechanism, the left transferring mechanism stops working, the scissors on the shearing mechanism shear the front connecting wire head which is not welded, and then the lamp strip continuously moves forwards longitudinally under the action of the left transfer mechanism, when the rear connecting wire head on the lamp strip is positioned at the position of the left welding mechanism, the welding operation is repeated, the front connecting wire head is welded with the positive wire, after the welding is finished, the wire pressing plate rises, the lamp strip continuously moves forwards under the action of the transfer mechanism, when the lamp strip moves to the position that the welding is positioned in the shearing mechanism, the left transfer mechanism stops working, the shearing mechanism shears the rear connecting wire head which is not welded, and then the lamp strip continuously moves forwards longitudinally under the action of the left and right transfer mechanisms, so that the lamp strip can continuously and automatically complete the peeling, welding and wire head shearing operation.

The invention has compact structure, convenient operation, reliable operation, high degree of automation, high processing efficiency, reduced labor time cost, reliable and stable welding quality of connecting lines, and no quality problems of wrong welding, missing welding, false welding, and the like.

Drawings

Figure 1 is a schematic diagram of the front view of the present invention,

figure 2 is a schematic top view of the present invention,

figure 3 is an enlarged schematic view of the cross-sectional A-A configuration of figure 2,

figure 4 is a schematic view of the structure of the lamp strip,

figure 5 is a schematic view of the wire windings at one end (front end) of the strip connection,

figure 6 is a schematic diagram of the bonding wire bonding of one end (front end) of the ribbon bonding wire,

figure 7 is a schematic view of the cross-sectional B-B structure of figure 2,

figure 8 is a schematic view of the C-direction structure of figure 7,

figure 9 is an enlarged partial schematic view of X-X of figure 2,

figure 10 is a schematic perspective view of a peeling mechanism,

figure 11 is a schematic perspective view of the movement and swinging of the wire taker fork in the welding mechanism,

figure 12 is a schematic perspective view of a spacing pin in a welding mechanism,

fig. 13 is a schematic perspective view of a shearing mechanism according to the present invention.

In the drawing of the figure, 1, guide plate 2, lamp belt 3, controller 4, guide wheel 5, lamp belt roller 6, peeling mechanism 7, guide moving plate 8, wire pressing plate 9, pressing plate cylinder 10, cross bar 11, welding cylinder 12, welding gun 13, wire steering wheel 14, wire 15, wire guiding tube 16, wire roller 17, welding mechanism 18, optical sensor 19, support plate 20, upper clamping head 21, shearing mechanism 22, driving roller 23, servo motor 24, belt 25, driven roller 26, working plate 27, seat plate 28, frame 29, peeling lateral seat 30, lateral moving cylinder 31, heating body 32, peeling knife 33, peeling device 34, pillar 35, limiting needle 36, wire pulling fork 37, wire winder 38, clamping cylinder 39, transfer cylinder 40, wire pulling fork lateral moving cylinder 41 the wire fork lateral movement seat 42, the wire fork swinging cylinder 43, the traction plate 44, the rotating piece 45, the arm plate 46, the broken skin area 47, the guide rail I48, the supporting plate 49, the lower clamping head 50, the positive wire 51, the negative wire 52, the front connecting lug 53, the rear connecting lug 54, the notch 55, the upright post 56, the cantilever 57, the wire pile 58, the longitudinal rod 59, the longitudinal sliding block 60, the broken skin lifting cylinder 61, the limiting cylinder 62, the lateral guide rod 63, the guide rail II 64, the pre-pressing plate 65, the axial transmission screw 66, the chip 67, the linear guide rail 68, the stepping motor 69, the refusing sheet 70, the inductor 71, the inductive movement base 72, the spring refusing seat 73, the inductive thimble 74, the groove-type photoelectric switch 75, the thimble fixing seat 76, the flange linear bearing 77, the lower movement base 78, lower slide rail bottom plate 79, step fixed plate 80, guiding axle 81, upper fixed plate 82, assembly tin head assembly 83, reinforcing plate 84, jacking cylinder 85, jacking cylinder connecting plate 86, jacking cylinder fixed plate 87, in-place sensing piece 88, scissors 89, opening and closing cylinder 90, lower fixed plate.

Detailed Description

As shown in the figure, the automatic welding equipment for connecting wires of the LED circuit board comprises a controller 3, a cuboid rack 28 made of metal, and a peeling mechanism 6, a welding mechanism 17 (right), a shearing mechanism 21 (right), a welding mechanism 17 (left), a shearing mechanism 21 (left) and a transfer mechanism for driving the lamp strip 2 to move which are sequentially arranged on the rack from left to right, wherein the peeling mechanism, the welding mechanism and the shearing mechanism are provided with light sensors 18 fixed on a supporting plate 19, the peeling mechanism is arranged on two sides of the lamp strip (in the length direction), the lamp strip is in a soft strip shape, an outer cavity of the lamp strip is a PVC plastic strip body, the plastic strip body is internally provided with LED chips 66, light sources and notches 54 are arranged on the chips at intervals, a front connecting wire head 52 and a rear connecting wire head 53 are arranged in the notches, the distance between the notches is 1000 mm, the plastic belt body can also be designed to be 600 mm, 800 mm and the like, the two corners of the plastic belt body are respectively provided with a positive electrode wire 50 and a negative electrode wire 51, the peeling mechanism comprises a peeling device 33, a copper heating body 31 (also other heat conducting metals) which can move left and right, front and back and up and down, a wiring pile 57 is arranged on the heating body, the specific heating temperature is determined according to the plastic of the belt body, a pre-pressing plate 64 (driven by a cylinder and used for fixing a lamp belt during peeling is arranged at one end of a guiding and moving plate close to the peeling mechanism), the peeling device support 34 is fixed on a stand column 55, the stand column is fixed on a seat plate 27, the peeling device is formed by two monomers which are symmetrically arranged at intervals, a splayed notch formed between the monomers is formed, the minimum width of the splayed notch is larger than the thickness of a peeling knife by 1-2 mm, the peeling is rapidly discharged outwards by utilizing the splayed notch, the quick peeling machine is favorable for quick peeling, the peeling knife 32 is arranged on the heating body, the heating body is fixed on the longitudinal sliding block 59, the longitudinal sliding block is connected with the peeling lifting cylinder 60 through the longitudinal rod 58, the lower end of the longitudinal rod is fixed on the peeling transverse seat 29, the peeling transverse seat is connected with the transverse moving cylinder 30 through the transverse guide rod 62, the peeling transverse seat 29 is arranged on the seat plate 27, the lower part of the seat is provided with the axial transmission screw 65 which can move the seat plate 27 left and right, the axial transmission screw is driven by the servo motor, the seat plate can move along the length direction of the frame, the seat plate is supported on the frame 28 through the guide rail II 63, and the working plate is arranged on the frame. The skin breaking knife is heated and can be clung to the moving lamp belt, and the supporting plate is fixed on the upright post in a cantilever manner, so that the skin breaking of the positive electrode wire 50 and the negative electrode wire 51 on the lamp belt is exposed, and the length of the skin breaking area 46 is 6-10 mm; the welding mechanism is arranged on the working plates 26 on two sides of the lamp belt at intervals, the front (left) welding mechanism completes welding between a front connecting wire and a positive electrode wire, the rear (right) welding mechanism completes welding between a rear connecting wire and a negative electrode wire, the welding mechanism comprises a wire pressing plate 8, a welding wire guide tube 15, a welding gun 12, a limiting needle 35 and a movable and swinging wire pulling fork 36, the wire pressing plate is connected with a pressing plate cylinder 9, the welding gun is connected with one end of a cross rod 10, the other end of the cross rod is connected with the welding cylinder 11, the welding wire guide tube 15 is arranged on one side of the welding gun, the welding wire guide tube is fixed on a frame, the welding wire 14 passes through the lower end of the welding wire guide tube and is abutted against the welding gun, the welding wire is output by a welding wire roller 16 through a welding wire steering wheel 13, the limiting needle is connected with a limiting cylinder 61 through a cantilever 56, the wire pulling fork can respectively bypass the front connecting wire head and the rear connecting wire head on the lamp belt which is moved to the welding position and is attached to the exposed positive electrode wire and the lamp belt, the wire pulling fork swing cylinder 42 is connected with the wire pulling fork swing cylinder 42, the wire pulling fork 42 is movably arranged on the wire pulling fork swing cylinder 41 and is transversely moved on the wire pulling fork seat 40, and is transversely moved and connected with the wire pulling fork seat 40; the shearing mechanism comprises scissors capable of shearing off the unwelded connecting wire heads; the transfer mechanism is arranged between the welding mechanism and the shearing mechanism, the transfer mechanism comprises a belt 24 capable of moving back and forth, two ends of the belt are connected with a driven roller 25 and a driving roller 22, the driving roller is connected with a servo motor 23, an arm plate 45 capable of moving back and forth along with the interval of the belt is connected to the belt (the lower end of the arm plate is fixedly connected with the belt through screws), an upper clamping head 20 and a lower clamping head 49 capable of rotatably clamping and loosening a lamp belt are connected to the arm plate, the upper clamping head is fixed on a supporting plate 48 through screws, the supporting plate 1 is fixed on the arm plate, the upper clamping head and the lower clamping head are connected with a clamping cylinder 38 through a rotating piece (shaft) 44, the clamping cylinder is fixed on a pulling plate 43, the pulling plate is connected with a transfer cylinder 39, the transfer cylinder is arranged on a guide rail I47, the guide rail I is arranged on a rack, and wires on the transfer mechanism are stored on a winder 37. The lamp belt on the lamp belt roller 5 enters the guide plate 7 horizontally through the guide plate 1 and the guide wheel 4. The lamp belt can intermittently move in the guide plate at different distances and times under the control of the computer through the transfer mechanism.

The shearing mechanism comprises scissors 88, the tail end of one rotating arm of the scissors is connected with an assembly tin head assembly 82, the tail end of the other rotating arm of the scissors is connected with an opening and closing cylinder 89, the opening and closing cylinder works to enable the shearing end of the scissors to be opened and closed, a lower fixing plate 90 is arranged on a linear guide rail 67, the linear guide rail is arranged on a lower sliding rail bottom plate 78, a lower moving base 77 is arranged on the lower fixing plate, the lower moving base is connected with a stepping motor 68, the stepping motor is connected with the lower sliding rail base through a stepping fixing plate 79 and a reinforcing plate 83, a groove type photoelectric switch 74 is arranged on the lower sliding rail base, a guide shaft 80 is arranged on the lower fixing plate, an upper fixing plate 81 is connected at the upper end of the guide shaft, an assembly tin head assembly is provided with a jacking cylinder 84 and a jacking cylinder connecting plate 85, the jacking cylinder connecting plate is arranged on the jacking cylinder fixing plate 86, a position sensing piece 87 is arranged between the lower fixing plate and the linear guide rail, a sensing moving base 71 is arranged at the lower part of the scissors, a sensing pre-needle 73 is arranged on the sensing pre-needle 73, a spring rejection seat 69, a rejection seat 72 and a thimble 70 are arranged on the jacking cylinder fixing base and a flange 75.

The electrical control related to the invention is the prior art.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to specific examples, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims

Automatic welding equipment for connecting wires of LED circuit boards, which is characterized in that: the automatic peeling machine comprises a controller (3), a frame (28) and a peeling mechanism (6), a welding mechanism (17) and a transferring mechanism which are sequentially arranged on the frame and used for driving a lamp belt to move, wherein light sensors (18) are arranged on the peeling mechanism and the welding mechanism, the peeling mechanism is arranged on two sides of the lamp belt (2), the peeling mechanism comprises a peeling device (33), a pre-pressing plate (64) and a heating body (31) which can move left and right, front and back and up and down, a peeling knife (32) which can move in an opening of the peeling device is arranged on the heating body, and the peeling knife is heated and can be clung to the moving lamp belt, so that the peeling of positive and negative electrode wires on the lamp belt is exposed; the welding mechanism is arranged on two sides of the lamp strip at intervals, the welding mechanism comprises a wire pressing plate (8), a welding gun (12), a limiting needle (35) and a wire pulling fork (36) capable of moving and swinging, the wire pulling fork can respectively bypass the limiting needle and is attached to positive and negative electrode wires exposed on the lamp strip for welding, the wire pulling fork is connected with a wire pulling fork swinging cylinder (42), the wire pulling fork swinging cylinder (42) is movably arranged on a wire pulling fork transverse moving seat (41), and the wire pulling fork transverse moving seat is connected with a wire pulling fork transverse moving cylinder (40).
2. The LED wiring board connection wire automatic welding apparatus according to claim 1, characterized in that: the transfer mechanism comprises a belt (24) capable of moving back and forth, an arm plate (45) capable of moving back and forth along with the interval of the belt is connected to the belt, and an upper clamping head (20) and a lower clamping head (49) capable of rotatably clamping and loosening the lamp belt are connected to the arm plate.
3. The LED wiring board connection wire automatic welding apparatus according to claim 1, characterized in that: the automatic welding device for the LED circuit board connecting wires further comprises a shearing mechanism arranged behind the welding mechanism, wherein the shearing mechanism comprises a pair of scissors (88) capable of shearing off the non-welded connecting wire heads.
4. The LED wiring board connection wire automatic welding apparatus according to claim 1, characterized in that: the heating body (31) is made of copper materials.
5. The LED wiring board connection wire automatic welding apparatus according to claim 1, characterized in that: the peeler (33) is formed by two monomers which are symmetrically arranged at intervals, splayed notches are formed between the monomers, and the minimum width of each splayed notch is larger than the thickness of the peeling knife by 1-2 mm.
6. The LED wiring board connection wire automatic welding apparatus according to claim 1 or 2, characterized in that: the transfer mechanism comprises a belt (24) capable of moving back and forth, two ends of the belt are connected with a driven roller (25) and a driving roller (22), the driving roller is connected with a servo motor (23), an arm plate (45) capable of moving back and forth along with the interval of the belt is connected to the belt, and an upper clamping head (20) and a lower clamping head (49) capable of rotatably clamping and loosening a lamp belt are connected to the arm plate.
7. The automatic welding device for connecting wires of an LED circuit board according to claim 3, wherein: the shearing mechanism comprises scissors (88), the tail end of one rotating arm of the scissors is connected with an assembly tin shearing head assembly (82), the tail end of the other rotating arm of the scissors is connected with an opening and closing cylinder (89), the opening and closing cylinder works to enable the shearing end of the scissors to be opened and closed, a lower fixing plate (90) is arranged on a linear guide rail (67), the linear guide rail is arranged on a lower sliding rail bottom plate (78), a lower moving base (77) is arranged on the lower fixing plate, the lower moving base is connected with a stepping motor (68), the stepping motor is connected with the lower sliding rail base through a stepping fixing plate (79) and a reinforcing plate (83), a groove type photoelectric switch (74) is arranged on the lower sliding rail base, be provided with guiding axle (80) on the fixed plate down, guiding axle upper end is connected with fixed plate (81), be provided with jacking cylinder (84) and jacking cylinder connecting plate (85) on the assembly tin head assembly, jacking cylinder connecting plate sets up on jacking cylinder fixed plate (86), be provided with between fixed plate and the linear guide down and target in place response piece (87), be provided with response in scissors lower part and remove pedestal (71), be provided with response thimble (73) on the response removes the pedestal, be equipped with on the jacking cylinder fixed plate spring refusing when seat (72), refusing when piece (69) and inductor (70), be provided with thimble fixing base (75) and flange linear bearing (76) at the lower removal base.