CN108365495B

CN108365495B - Automatic PCB assembling and welding equipment

Info

Publication number: CN108365495B
Application number: CN201810336689.3A
Authority: CN
Inventors: 颜章健
Original assignee: Suzhou Quick Laser Technology Co ltd
Current assignee: Suzhou Quick Laser Technology Co ltd
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2023-06-09
Anticipated expiration: 2038-04-11
Also published as: CN108365495A

Abstract

The invention discloses automatic assembly welding equipment for a PCB (printed circuit board), which comprises a conveying line, a tooling carrier moving on the conveying line, a wire harness feeding station, a wire stripper, a PCB feeding mechanism, a double-station wire harness welding unit, a wire harness welding detection unit, an outer cover feeding mechanism, a double-station outer cover welding unit, an outer cover welding detection unit, a discharging grabbing mechanism and a discharging conveying line, wherein the wire harness feeding station, the wire harness feeding mechanism, the double-station wire harness welding unit, the outer cover welding detection unit, the discharging grabbing mechanism and the discharging conveying line are arranged along the conveying line, a first cylinder for driving the tooling carrier to jack up upwards is arranged at the bottom of the tooling carrier, a supporting plate for supporting the first cylinder and a hook for limiting the height of the tooling carrier are arranged at positions corresponding to each station of the conveying line, and a positioning and pressing mechanism for fixing welding products is arranged at both the double-station wire harness welding unit and the double-station outer cover welding unit. The invention realizes a series of automatic assembly line operations such as automatic feeding, automatic wire stripping, automatic assembly welding, automatic detection blanking and the like of the PCB, the wire harness and the outer cover, and greatly improves the welding assembly efficiency and quality of PCB products.

Description

Automatic PCB assembling and welding equipment

[ field of technology ]

The invention relates to an assembly automation device, in particular to automatic assembly welding equipment for a PCB.

[ background Art ]

Traditional welding all adopts manual feeding, wastes time and energy, and inefficiency. And meet some weldments that need wire stripping skin just hardly handle, there is wire stripping equipment in prior art specially, has improved the link of wire stripping required the most consumption time greatly to promote efficiency, however the shortcoming is because the line is out of shape easily, is difficult for doing the location, can often appear welding the off-set problem in welding process usually.

Therefore, it is necessary to provide a new automatic assembly soldering apparatus for PCB boards to solve the above-mentioned problems.

[ invention ]

The invention mainly aims to provide automatic assembly welding equipment for a PCB, which realizes a series of automatic assembly line operations such as automatic feeding, automatic wire stripping, automatic assembly welding, automatic detection blanking and the like of the PCB, a wire harness and a housing, and greatly improves the assembly efficiency and welding assembly quality of PCB products.

The invention realizes the aim through the following technical scheme: the utility model provides an automatic equipment welding equipment of PCB board, its includes the transfer chain, be in frock carrier that removes on the transfer chain, follow pencil material loading station, wire stripping machine, PCB board feed mechanism, duplex wiring harness welding unit, pencil welding detection unit, dustcoat feed mechanism, duplex dustcoat welding unit, dustcoat welding detection unit, unloading snatch mechanism and unloading transfer chain that the transfer chain set up, the bottom of frock carrier is provided with the first cylinder that drives its jack-up upwards, be provided with on the transfer chain corresponding to every operation station position and support the backup pad of first cylinder and restriction the couple of frock carrier height duplex wiring harness welding unit with duplex dustcoat welding unit all is provided with the location hold-down mechanism to fixed welding product.

Further, the tool carrier comprises a bottom plate driven by the first cylinder to move up and down and erected on the conveying line, a surrounding baffle arranged on the bottom plate, a first wire clamping block and a second wire clamping block which clamp one end of a wire, a sliding rail arranged on one side surface of the bottom plate, and a PCB clamp which moves on the sliding rail to realize butt joint with the wire and is used for bearing a PCB.

Further, the PCB clamp comprises a first connecting plate sliding on the sliding rail, a bearing groove arranged on the first connecting plate, and a floating clamping plate arranged in the bearing groove and positioned to press two adjacent edges of the PCB.

Further, an opening corresponding to the wire clamping groove is formed in one side, close to the bottom plate, of the bearing groove, a through hole penetrating through the upper surface and the lower surface of the first connecting plate is formed in the bottom of the opening, and a pin hole is formed in the first connecting plate.

Further, the PCB feeding mechanism comprises a first driving piece, a dragging plate driven by the first driving piece to move up and down, a PCB bin arranged on the dragging plate and stacked with a plurality of layers of trays, a transfer device for moving the trays in the PCB bin to a reference position, and a PCB grabbing mechanism for grabbing the PCB from the trays to the tooling carrier.

Further, the position of the PCB feeding mechanism is provided with a first pre-positioning mechanism for initially positioning the PCB before feeding and mounting, the first pre-positioning mechanism comprises a positioning cylinder and positioning claws driven by the positioning cylinder to open or close, and the four positioning claws are distributed in an annular mode at equal angles.

Further, the PCB feeding mechanism comprises a spreading mechanism which spreads the PCB clamp, and the spreading mechanism comprises a fourth cylinder, a second connecting plate which is driven by the fourth cylinder to move up and down and supports the bottom of the first connecting plate, a spreading cylinder which is fixed on the second connecting plate, and a spreading block which is driven by the spreading cylinder to spread the floating clamping plate in the tool carrier.

Further, the positioning and pressing mechanism comprises a first positioning and pressing mechanism which is arranged at the position of the double-station wire harness welding unit and is used for accurately positioning a wire harness welding part, the first positioning and pressing mechanism comprises a fifth cylinder, a third connecting plate which is driven by the fifth cylinder to move parallel to the conveying line, a sixth cylinder and a seventh cylinder which are fixed on the third connecting plate, a pin roll which is driven by the sixth cylinder to move up and down and extend into a pin hole of the PCB clamp, a wire harness clamping block which is driven by the seventh cylinder to move up and down and extend into a through hole of the PCB clamp, and a wire harness end pressing mechanism which is matched with the wire harness clamping block to clamp and fix the end of the wire harness firmly.

Further, the PCB clamp positioning mechanism is arranged on one side of the conveying line and corresponds to the position of the outer cover feeding mechanism, and comprises a twelfth cylinder and a pin shaft which is driven by the twelfth cylinder to move up and down and stretches into the pin hole of the PCB clamp.

Further, the positioning and compressing mechanism comprises a second positioning and compressing mechanism which is arranged at the position of the double-station outer cover welding unit and is used for accurately positioning the outer cover, and the second positioning and compressing mechanism comprises a fourteenth cylinder, a fourth connecting plate which is driven by the fourteenth cylinder to move up and down, a gland which is arranged below the end part of the fourth connecting plate and is profiled with the outer cover profile, positioning clamping claws which are symmetrically arranged on diagonal lines of the gland, and a fifteenth cylinder which is fixed on the fourth connecting plate and is used for driving the positioning clamping claws to open or close.

Compared with the prior art, the PCB automatic assembly welding equipment has the beneficial effects that: the automatic feeding, wire stripping, automatic assembly welding, automatic detection and discharging and other series of automatic assembly line operations of the PCB, the wire harness and the outer cover are realized, and the assembly efficiency and the welding assembly quality of the PCB product are greatly improved; through setting up the location hold-down mechanism, the pencil welding when welding with the dustcoat before PCB board and dustcoat installation and the location structure of tool loading utensil has improved the position accuracy when welding the equipment greatly, has improved welding quality and product quality.

[ description of the drawings ]

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a conveyor line and a tooling carrier according to an embodiment of the present invention;

FIG. 3 is a schematic view of a tool carrier according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a PCB clamp according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a PCB loading mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an automatic feeding and tray transferring device for a PCB in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a tray and a transfer device according to an embodiment of the present invention;

FIG. 8 is a schematic view of a bin according to an embodiment of the invention;

FIG. 9 is a schematic structural view of a spreader apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a duplex wire harness welding unit and a wire harness welding detection unit in the embodiment of the present invention;

FIG. 11 is a schematic view of one of the first positioning and pressing mechanisms according to an embodiment of the present invention;

FIG. 12 is a schematic view of another first positioning and compressing mechanism according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a housing loading mechanism according to an embodiment of the present invention;

FIG. 14 is a schematic view of a second positioning mechanism according to an embodiment of the present invention;

FIG. 15 is a schematic view of a second positioning and compressing mechanism according to an embodiment of the present invention;

FIG. 16 is a schematic view of a portion of a second positioning and compressing mechanism according to an embodiment of the present invention;

FIG. 17 is a schematic structural view of a discharging grabbing mechanism and a discharging conveying line in an embodiment of the present invention;

fig. 18 is a schematic structural view of a blanking grabbing mechanism and a PCB clamp moving driving mechanism in an embodiment of the present invention;

100PCB automatic assembly welding equipment; a wire harness; b, conducting wires;

1 conveying line, 111PCB fixture positioning mechanism, 1111 twelfth cylinder, 1112 pin shaft;

2 tooling carriers, 21 first cylinders, 22 bottom plates, 23 surrounding baffles, 24 first lead clamping blocks, 25 second lead clamping blocks, 26 sliding rails, 27PCB clamps, 271 bearing grooves, 272 floating clamping plates, 2721 through holes, 273 openings, 274 through holes, 275 pin holes, 276 guide plates, 277 bar grooves, 278 first connecting plates, 279U-shaped grooves, 2710 guide blocks, 2711 limit columns and 28 support rods;

3, a wire harness feeding station; 4, a wire stripper;

the PCB grabbing mechanism comprises a 5PCB plate feeding mechanism, a 51 first driving piece, a 52 dragging plate, a 53PCB bin, a 531 bottom supporting plate, a 532 upper cover plate, a 533 side plate, 534 supporting bars, 535 guide rollers, a 536 limiting rod, a 537 handle, a 54 material tray, 541 back-off openings, 542 gaps, a 543 limiting rod, a 55 transfer device, 551 second cylinders, 552 third cylinders, 553 clamping hooks, 56 expanding mechanisms, 561 fourth cylinders, 562 second connecting plates, 563 expanding cylinders, 564 expanding blocks and 57PCB grabbing mechanisms;

6 duplex wire harness welding unit, 61 laser welding head, 62 drive module; 7 a wire harness welding detection unit;

8 housing feeding mechanism, 81 vibration plate, 82 housing runner, 83 flitch, 831 housing bearing groove, 84 ninth cylinder, 85 tenth cylinder, 86 eleventh cylinder, 87 housing suction head;

9 double-station outer cover welding units; 10 a welding detection unit of the outer cover;

11 blanking grabbing mechanisms, 1101 second driving members, 1102 eighteenth cylinders, 1103 fifth connecting plates, 1104 wire harness clamping mechanisms, 1105 wire clamping mechanisms and 1106PCB clamping mechanisms;

12 blanking conveying lines; 13, hooking; 14 a support plate;

15 first positioning and compressing mechanisms, 151 fifth cylinders, 152 third connecting plates, 153 sixth cylinders, 154 seventh cylinders, 155 pin shafts, 156 wire harness clamping blocks, 157 wire harness end compressing mechanisms, 1571 eighth cylinders, 1572 wire harness compressing claws;

16 second positioning and compressing mechanisms, 161 fourteenth cylinders, 162 fourth connecting plates, 163 gland, 164 positioning clamping jaws, 165 fifteenth cylinders, 166 guide rail strips, 167 rotating arms and 168 connecting rods;

17 a first positioning mechanism, 171 a positioning cylinder, 172 a positioning claw;

18 a second positioning mechanism, 181 a thirteenth cylinder, 182 a positioning plate;

19PCB clamp movement driving mechanism, 191 sixteenth cylinder, 192 seventeenth cylinder, 193 pin shaft;

110 loop lines; 112 lifting mechanism.

[ detailed description ] of the invention

Examples:

referring to fig. 1-18, the present embodiment is an automatic PCB board assembling and welding apparatus 100, which includes a conveying line 1, a tooling carrier 2 moving on the conveying line 1, a wire harness feeding station 3, a wire stripper 4, a PCB board feeding mechanism 5, a double-station wire harness welding unit 6, a wire harness welding detection unit 7, an outer cover feeding mechanism 8, a double-station outer cover welding unit 9, an outer cover welding detection unit 10, a discharging grabbing mechanism 11 and a discharging conveying line 12.

The bottom of the tool 2 is provided with a first cylinder 21.

The positions of the conveyor line 1, which correspond to the wire stripping machine 4, the PCB feeding mechanism 5, the double-station wire harness welding unit 6, the wire harness welding detection unit 7, the outer cover feeding mechanism 8, the double-station outer cover welding unit 9, the outer cover welding detection unit 10 and the blanking grabbing mechanism 11, are respectively provided with a hook 13 for limiting the accuracy of the height direction of the tool loading device 2 and a supporting plate 14 for supporting the first cylinder 21. The hooks 13 on each station are provided with two pairs, which are respectively arranged on two opposite sides of the tooling carrier 2. The support plate 14 is arranged at the bottom of the conveyor line 1.

The tool loading tool 2 comprises a bottom plate 22 which is driven by a first air cylinder 21 to move up and down and is erected on the conveying line 1, a surrounding baffle plate 23 arranged on the bottom plate 22, a first wire clamping block 24 and a second wire clamping block 25 which clamp one end of a wire, a sliding rail 26 arranged on one side surface of the bottom plate 22, and a PCB clamp 27 which moves on the sliding rail 26 and is used for bearing a PCB. The first wire clamping block 24 is fixed on the bottom plate 22 and is in butt joint with the surrounding baffle 23, and the wire harness is placed on the bottom plate 22 and limits the periphery of the wire harness through the surrounding baffle 23. One end of a single wire of the wire harness is sequentially clamped into the first wire clamping block 24 and the second wire clamping block 25, a supporting rod 28 is arranged on the bottom plate 22, one end of the supporting rod 28 extends out of the end face of one side of the bottom plate 22, which is provided with the sliding rail 26, the second wire clamping block 25 is fixed at the end of the supporting rod 28, and the PCB clamp 27 achieves butt joint of a PCB and the wire by moving left and right on the sliding rail 26.

The first wire clamping block 24 and the second wire clamping block 25 are respectively provided with a wire clamping groove (not marked in the figure), and the width of the wire clamping groove in the first wire clamping block 24 is 1-2 mm larger than the diameter of the wire to be clamped. The inner wall surface of the wire clamping groove in the second wire clamping block 25 is provided with an elastic blocking member (not identified in the figure) for preventing the wire from tilting out of the wire clamping groove. The elastic blocking piece is a steel ball which can elastically float. Through setting up two wire screens piece to only be greater than wire diameter 1 ~ 2mm with the card wire casing setting therein, and set up the elasticity that prevents the perk in another card wire casing and block the piece, can effectually fix a position the wire tip, and effectually prevent that perk and crooked phenomenon from taking place, provide the guarantee for the welding of wire and PCB board.

The PCB clamp 27 comprises a first connecting plate 278 sliding on the slide rail 26, a bearing groove 271 arranged on the first connecting plate 278, a floating clamping plate 272 arranged in the bearing groove 271 and used for positioning and pressing two adjacent sides of the PCB, an opening 273 corresponding to the clamping groove is arranged on one side, close to the bottom plate 22, of the bearing groove 271, and a through hole 274 penetrating through the upper surface and the lower surface of the first connecting plate 278 is arranged at the bottom of the opening 273. The PCB clamp 27 is also provided with pin holes 275. The pin holes 275 are mainly used for facilitating the driving piece to extend into the pin holes 275 to drive the PCB clamp 27 to slide when the lead wires are welded with the PCB. The PCB clamp 27 is also provided with a guide piece 276 for guiding the wire to slide smoothly into the opening 273. The through hole 274 is mainly used for a wire jacking mechanism to extend upwards from bottom to top, so that the wire is slightly and upwards ejected to a certain height, and the end part of the wire is conveniently and accurately positioned. The bottom surface of the carrying groove 271 is provided with a bar-shaped groove 277 defining the floating range of the floating clamp plate 272 and penetrating to the lower surface. One end of the other floating clip 272 protrudes out of the PCB clamp 27 and is provided with a through hole 2721 at the protruding portion.

The floating clamp plate 272 is connected to the inner wall surface of the bearing groove 271 through an elastic member, and the floating clamp plate 272 can be used for rapidly positioning the PCB and clamping the PCB, so that the subsequent welding operation is prevented from being influenced by displacement in the moving process of the tool carrier 2.

The first connection plate 278 is provided with an inwardly recessed U-shaped groove 279 on one side surface thereof adjacent to the second wire clamping block 25, and a guide block 2710 which is abutted with the U-shaped groove 279. The lower surface of the second wire clamping block 25 is provided with a limiting post 2711 clamped into the U-shaped groove 279. Limiting post 2711 on the one hand limits the path of movement of first connector plate 278 as first connector plate 278 approaches the wire from left to right; on the other hand, through the cooperation of the spacing post 2711 and the U-shaped groove 279, the position of wire tip and PCB board can be carried out quick accurate location.

The working principle of the tool loading tool 2 is as follows: in the initial state, the first connection plate 278 and the PCB clamp 27 are located at a side away from the wire; firstly, placing a wire harness coil in a surrounding baffle plate 23 on a bottom plate 22, and sequentially clamping one end of a single wire into wire clamping grooves of two wire clamping blocks 24 and 25; placing the PCB in the bearing groove 271 of the PCB clamp 27; when the tool loading tool 2 moves to the welding mechanism position, the first air cylinder 21 jacks up the bottom plate 22 to abut against the hook 13, the first connecting plate 27 is pushed to be close to the wire, in the process, the limiting post 2711 is clamped into the U-shaped groove 279, and the end part of the wire slides into the opening 273 and contacts with the PCB.

The PCB board feeding mechanism 5 includes a first driving member 51, a dragging plate 52 driven by the first driving member 51 to move up and down, a PCB silo 53 disposed on the dragging plate 52 and stacked with a plurality of layers of trays 54, a transfer device 55 for moving the trays 54 in the PCB silo 53 to a reference position, and a PCB board grabbing mechanism 57 for grabbing the PCB board from the trays 54 into the tooling carrier 2. The first pre-positioning mechanism 17 is arranged beside the transfer device 55, after the PCB grabbing mechanism 57 grabs the PCB from the tray 54 at the reference position, the PCB grabbing mechanism 57 is placed on the first pre-positioning mechanism 17 for initial positioning, at this time, the original point of motion of the PCB grabbing mechanism 57 and the initial position of the PCB are already in place and are kept unchanged all the time, so that the motion programming of the PCB grabbing mechanism 57 is simpler.

The PCB loading mechanism 5 is provided with a first pre-positioning mechanism 17 for initially positioning the PCB before loading and mounting. The first positioning mechanism 17 comprises a positioning cylinder 171 and positioning claws 172 which are driven by the positioning cylinder 171 to open or close, wherein the four positioning claws 172 are distributed in an annular mode at equal angles.

The PCB silo 53 is a frame structure formed by a bottom pallet 531, an upper cover plate 532, and two side plates 533. The inner surfaces of the two side plates 533 are provided with a plurality of supporting rods 534 which are distributed in parallel from bottom to top, and the supporting rods 534 are provided with a plurality of guide rollers 535. A stop bar 536 is provided between the bottom plate 531 and the upper cover plate 532 to stop one side of the tray. The upper surface of the upper cover plate 532 is provided with a pair of handles 537 to facilitate the operator's removal of the PCB silo 53. The using method of the PCB bin 53 is as follows: firstly, manually placing a PCB bin 53 filled with a PCB material disc 54 on a material dragging plate 52; then the first driving piece 51 drives the PCB bin 53 to integrally rise to a height position where the PCB bin is butted with the transfer device 55; the transfer device 55 pulls out one layer of trays 54 to the reference position for feeding, when the PCBs in the trays 54 are completely grasped, the transfer device 55 pushes the empty trays 54 back to the PCB bin 53, and then the first driving piece 51 drives the PCB bin 53 to integrally rise by one tray height. The transfer device 55 grabs the next layer of trays for feeding. Like this, the feed of PCB board can go on in quick succession, and has realized loading product charging tray material loading and the ingenious combination of empty charging tray unloading.

The tray 54 is provided with a back-off opening 541 near the middle of one side of the transfer device 55, notches 542 are provided on both sides of the back-off opening 541, and a stopper rod 543 for limiting the movement range of the tray 54 and corresponding to the position of the notches 542 is provided on the path along which the tray 54 is driven to move by the transfer device 55. The transfer device 55 includes a second cylinder 551, a third cylinder 552 driven by the second cylinder 551 to move forward and backward, and a hook 553 driven by the third cylinder 552 to perform an expanding or retracting operation and extending into the back-off opening 541. The transfer device 55 operates on the following principle: the second cylinder 551 drives the hooks 553 to approach the PCB stock bin 53 until the hooks 553 extend into the back-off opening 541, and then the third cylinder 552 drives the hooks 553 to open and buckle the back-off opening 541, so that the hooks 553 are connected with the material tray 54; the second cylinder 551 then drives the catch 553 while moving together with the tray 54 to the reference position.

The PCB board feeding mechanism 5 of the present embodiment further includes a spreader mechanism 56 that spreads the PCB clamp 27. The expanding mechanism 56 includes a fourth cylinder 561, a second connecting plate 562 which is driven by the fourth cylinder 561 to move up and down and supports the bottom of the first connecting plate 27, an expanding cylinder 563 fixed on the second connecting plate 562, and an expanding block 564 which is driven by the expanding cylinder 563 to pull out the floating clamp plate 272 in the tool 2. The two spreading cylinders 563 and the two spreading blocks 564 are respectively arranged, one spreading block 564 is driven by the spreading cylinder 563 to move perpendicular to the direction of the conveying line 1, the spreading block 564 is provided with a part inserted into the through hole of one floating clamping plate 272, and the other spreading block 564 is driven by the spreading cylinder 563 to move parallel to the direction of the conveying line 1 and extend into the bearing groove 271 to spread the floating clamping plate 272. When the tool 2 moves to the position of the PCB feeding mechanism 5, the fourth cylinder 561 drives the second connecting plate 562 to move upwards to prop against the first connecting plate 27 in the tool 2, at this time, one of the supporting blocks 564 stretches into the bearing groove 271 through the bar-shaped groove 277, and the top end of the other supporting block 564 stretches into the through hole of one of the floating clamping plates 272; the two expanding cylinders 563 drive the expanding blocks 564 to expand the two floating clamping plates 272, thereby providing a space for the placement of the PCB board.

The double-station wire harness welding unit 6 comprises two wire harness welding units for respectively welding two different parts, and comprises a laser welding head 61 and a driving module 62 for driving the laser welding head 61 to move. The double-station housing welding unit 9 has the same structure as the double-station harness welding unit 6.

The double-station wire harness welding unit 6 is provided with a first positioning and pressing mechanism 15 for accurately positioning the wire harness welding part.

The first positioning and pressing mechanism 15 located at the first wire harness welding unit position includes a fifth cylinder 151 located below the laser welding head 61, a third connecting plate 152 driven by the fifth cylinder 151 to move parallel to the conveying line 1, a sixth cylinder 153 and a seventh cylinder 154 fixed on the third connecting plate 152, a pin 155 driven by the sixth cylinder 153 to move up and down and extending into a pin hole 275 of the PCB clamp 27, a wire harness clamping block 156 driven by the seventh cylinder 154 to move up and down and extending into a through hole 274 of the PCB clamp 27, and a wire harness end pressing mechanism 157 engaged with the wire harness clamping block 156 to clamp and fix the wire harness end. The wire harness end pressing mechanism 157 includes an eighth cylinder 1571, and a wire harness pressing claw 1572 that moves up and down driven by the eighth cylinder 1571.

In this embodiment, since the PCB clamp 27 in the tool carrier 2 has been pushed toward one end of the wire harness at the time of the first wire harness welding unit position, there is no need to move the PCB clamp 27 after the second wire harness welding unit position, and therefore, the sixth cylinder 153 and the seventh cylinder 154 are fixed to a fixed base in the first positioning pressing mechanism 15 at the second wire harness welding unit position, without the fifth cylinder 151 and the third connecting plate 152, and the remaining structures are the same.

The working principle of the double-station wire harness welding unit 6 and the first positioning and pressing mechanism 15 is as follows: when the tool loading tool 2 moves to the first wire harness welding unit position, the first cylinder 21 drives the tool loading tool 2 to be integrally separated from the conveying line 1 upwards and upwards props against the hook 13, so that the height positioning is realized; the sixth cylinder 153 drives the pin shaft 155 to extend upwards into the pin hole 275; the fifth cylinder 151 drives the third connection plate 152 to move together with the PCB clamp 27 close to the wire; at this time, the seventh cylinder 154 drives the harness clip 156 upward through the through-hole 274 to slightly jack up the wire end portion; an eighth cylinder 1571 in the wire harness end pressing mechanism 157 drives a wire harness pressing claw 1573 to descend, and the wire harness pressing claw 1573 presses the end of the wire against the surface of the PCB and fixes the position of the wire harness pressing claw; the driving module 62 drives the laser welding head 61 to move to a welding position to weld the lead and the PCB together; the tool loading tool 2 continues to move backward to the second wire harness welding unit, and similarly, the welding operation of the second welding portion is realized.

The harness welding detection unit 7 and the housing welding detection unit 10 are CCD cameras.

The housing feeding mechanism 8 comprises a vibrating disc 81, a housing runner 82 in butt joint with the vibrating disc 81, a material plate 83 in butt joint with the tail end of the housing runner 82, a ninth cylinder 84 for driving the material plate 83 to move in the direction perpendicular to the housing runner 82, a tenth cylinder 85 positioned above the material plate 83, an eleventh cylinder 86 driven by the tenth cylinder 85 to move back and forth, and a housing suction head 87 driven by the eleventh cylinder 86 to move up and down. The PCB clamp positioning mechanism 111 for positioning the PCB clamp 27 is arranged on one side of the conveying line 1 corresponding to the position of the outer cover feeding mechanism 8, and the PCB clamp positioning mechanism 111 comprises a twelfth cylinder 1111 and a pin 1112 which is driven by the twelfth cylinder 1111 to move up and down and stretches into a pin hole 275 of the PCB clamp 27.

The second positioning mechanism 18 for initial positioning before loading and mounting of the outer cover is arranged in the outer cover loading mechanism 8. The second pre-positioning mechanism 18 comprises a thirteenth cylinder 181 and a clamping plate 182 driven by the thirteenth cylinder 181 to move towards the material plate 83, an outer cover bearing groove 831 which bears an outer cover and is open on one side is arranged in the material plate 83, the clamping plate 182 moves in the direction of one opening angle in the outer cover bearing groove 831 to be close to the outer cover bearing groove 831, a bayonet (not identified in the figure) square with the outline of one corner of the outer cover is arranged at the end part of the clamping plate 182, the extrusion limit of one corner of the outer cover is realized through the driving action of the thirteenth cylinder 181, the accuracy of the initial position of the outer cover is ensured, and the guarantee is provided for the installation and welding of the outer cover and the PCB.

The double-station housing welding unit 9 has the same structure as the double-station harness welding unit 6. The double-station outer cover welding unit 9 is provided with a second positioning and pressing mechanism 16 for accurately positioning the outer cover. The second positioning and pressing mechanism 16 includes a fourteenth cylinder 161, a fourth connecting plate 162 driven by the fourteenth cylinder 161 to move up and down, a pressing cover 163 provided below an end portion of the fourth connecting plate 162 and contoured with the outline of the housing, positioning claws 164 symmetrically provided on diagonal lines of the pressing cover 163, and a fifteenth cylinder 165 fixed to the fourth connecting plate 162 and driving the positioning claws 164 to open or close. In order to strictly control the symmetry of the movements of the two positioning claws 164, the center of the outer cover is strictly ensured to coincide with the set center, the outer cover is in butt joint with the PCB, guide rail strips 166 distributed along the diagonal line of the pressing cover 163 are arranged between the fourth connecting plate 162 and the pressing cover 163, strip-shaped grooves are formed in the guide rail strips 166, the upper parts of the positioning claws 164 are clamped into the guide rail strips 166, rotating arms 167 taking the center of the pressing cover 163 as a rotating shaft are arranged on the fourth connecting plate 162, connecting rods 168 are symmetrically hinged at two ends of the rotating arms 167, the other ends of the connecting rods 168 are hinged with the positioning claws 164 through pin shafts, and pin shafts connecting the connecting rods 168 and the positioning claws 164 penetrate through the strip-shaped grooves.

The double-station housing welding unit 9 is also provided with a PCB clamp positioning mechanism 111 for fixing the PCB clamp 27.

The second positioning and compressing mechanism 16 works in the following principle: when the tool loading tool 2 moves into place, the PCB clamp positioning mechanism 111 positions the PCB clamp 27; the fourteenth cylinder 161 drives the fourth connection plate 162 to descend, and the cover 163 initially presses the outer cover on the PCB board; the fifteenth cylinder 165 then drives the positioning pawl 164 while clamping the housing from its diagonal; the fourteenth cylinder 161 continues to descend, and at this time, the cover 163 and the positioning claw 164 tightly press the cover against the PCB board, and at the same time, ensure complete butt joint of the cover and the PCB board; the laser welding head in the double-station housing welding unit 9 is then moved to weld the housing and the PCB together.

Because the wire harness is easy to bend, tilt and the like in the automatic movement process, the wire harness is difficult to position during welding. In order to ensure the welding quality of the wire harness and the PCB and the welding quality of the outer cover and the PCB, the first cylinder 21 is arranged at the bottom of the tool carrier 2 and combined with the hook 13 and the support plate 14 on the conveying line 1, when the tool carrier 2 moves to the feeding, welding or detecting station, the first cylinder 21 is supported by the support plate 14, the tool carrier 2 is driven to jack up upwards, the tool carrier 2 is limited by the hook 13, and the position accuracy of a product on the tool carrier 2 in height is ensured; secondly, the first and second pre-positioning mechanisms 17 and 18 are arranged at the positions of the PCB feeding mechanism 5 and the outer cover feeding mechanism 8, so that the PCB or the outer cover placed in the tool carrier 2 is initially positioned in advance, and the high position precision of the clamp after clamping the material into the tool carrier 2 is ensured; finally, the double-station wire harness welding unit 6 and the double-station outer cover welding unit 9 are respectively provided with a positioning and pressing mechanism 15 and 16, so that the materials to be welded are positioned by the carrier on one hand, and are further positioned by the positioning and pressing mechanism on the other hand, and the position stability is kept, so that the welding quality is further ensured, and the welding quality yield on an automatic assembly line reaches 96 percent and is not inferior to the welding quality of a single welding machine.

The conveying line 1 is provided with a spreading mechanism 56 for spreading the PCB clamp 27 and a PCB clamp moving driving mechanism 19 for driving the PCB clamp 27 to move at the position of the blanking grabbing mechanism 11, and the PCB clamp moving driving mechanism 19 comprises a sixteenth air cylinder 191, a seventeenth air cylinder 192 driven by the sixteenth air cylinder 191 to horizontally move, and a pin shaft 193 driven by the seventeenth air cylinder 192 to vertically move and extend into a pin hole 275 of the PCB clamp 27.

The blanking grasping mechanism 11 includes a second driving member 1101, an eighteenth cylinder 1102 driven by the second driving member 1101 to perform horizontal movement, a fifth connecting plate 1103 driven by the eighteenth cylinder 1102 to perform up-and-down movement, a wire harness clamping mechanism 1104, a wire clamping mechanism 1105, and a PCB board clamping mechanism 1106 fixed to the fifth connecting plate 1103.

The blanking conveying line 12 includes a conforming product conveying line and a nonconforming product conveying line.

In this embodiment, a circulation line 110 is provided below the conveyor line 1, and a lifting mechanism 112 for butt-jointing the conveyor line 1 and the circulation line 110 is provided at both ends of the conveyor line 1.

The working flow of the automatic assembly and welding device 100 for the PCB board in this embodiment is as follows: the wire harness is put on a tooling carrier 2, and the tooling carrier 2 is conveyed to a wire stripper 4 on a conveying line 1 for wire stripping; then the PCB is conveyed to the position of the PCB feeding mechanism 5, and the PCB feeding mechanism 5 grabs a PCB and places the PCB into the PCB clamp 27; when the double-station wire harness welding unit 6 is transported to the position, the first positioning and pressing mechanism 15 moves the PCB clamp 27 to be in butt joint with the lead, and the end part of the lead is fixedly clamped and positioned, so that the welding of the two parts of the lead and the PCB is realized; detecting the welding part through a wire harness welding detection unit 7; then the automatic feeding of the outer cover is realized through the outer cover feeding mechanism 8; when the tool loading tool 2 is transported to the double-station outer cover welding unit 9, the outer cover and the PCB are completely overlapped by the second positioning and pressing mechanism 16, and the outer cover is fixedly pressed and positioned to finish the welding of the two parts of the outer cover and the PCB; detecting the welding part by the outer cover welding detection unit 10; finally, the tool loading tool 2 moves to the position of the blanking grabbing mechanism 11, the wire harness clamping mechanism 1104, the wire clamping mechanism 1105 and the PCB clamping mechanism 1106 in the blanking grabbing mechanism 11 respectively clamp the wire harness, the middle part of the wire and the welded PCB, and finally the welded and assembled product is grabbed on the blanking conveying line 12 and output.

The embodiment has the beneficial effects that the PCB automatic assembly welding equipment 100 comprises: the automatic feeding, wire stripping, automatic assembly welding, automatic detection and discharging and other series of automatic assembly line operations of the PCB, the wire harness and the outer cover are realized, and the assembly efficiency and the welding assembly quality of the PCB product are greatly improved; through setting up the location hold-down mechanism, the pencil welding when welding with the dustcoat before PCB board and dustcoat installation and the location structure of tool loading utensil has improved the position accuracy when welding the equipment greatly, has improved welding quality and product quality.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims

1. Automatic PCB board equipment welding equipment, its characterized in that: the automatic wire stripping machine comprises a conveying line, a tool carrier moving on the conveying line, wire harness feeding stations, wire stripping machines, a PCB feeding mechanism, a double-station wire harness welding unit, a wire harness welding detection unit, an outer cover feeding mechanism, a double-station outer cover welding unit, an outer cover welding detection unit, a discharging grabbing mechanism and a discharging conveying line, wherein the wire harness feeding stations, the wire stripping machines, the PCB feeding mechanism, the double-station wire harness welding unit, the outer cover welding detection unit, the discharging grabbing mechanism and the discharging conveying line are arranged on the bottom of the tool carrier, a first cylinder for driving the tool carrier to jack up upwards is arranged on the bottom of the tool carrier, a supporting plate for supporting the first cylinder and a hook for limiting the height of the tool carrier are arranged on the position of the conveying line corresponding to each operation station, and a positioning and pressing mechanism for fixing welding products is arranged on the double-station wire harness welding unit and the double-station outer cover welding unit;

the tooling carrier comprises a bottom plate, a surrounding baffle plate, a first wire clamping block, a second wire clamping block, a sliding rail and a PCB fixture, wherein the bottom plate is driven by the first air cylinder to move up and down and is erected on the conveying line, the surrounding baffle plate is arranged on the bottom plate, the first wire clamping block and the second wire clamping block are used for clamping one end of a wire, the sliding rail is arranged on the bottom plate, and the PCB fixture is used for abutting the wire and bearing a PCB by moving on the sliding rail; the first wire clamping block is fixed on the bottom plate and is in butt joint with the surrounding baffle plate, and the wire harness is placed on the bottom plate and limits the periphery of the wire harness through the surrounding baffle plate; the PCB is placed in the PCB clamp, and the PCB clamp is pushed to the lower part of the end part of the wire under the drive of the positioning and pressing mechanism to realize the butt joint with the wire; the first wire clamping block and the second wire clamping block are respectively provided with a wire clamping groove, and the inner wall surface of the wire clamping groove in the second wire clamping block is provided with an elastic blocking piece for preventing wires from tilting to be separated from the wire clamping groove.

2. The PCB board automatic assembling and welding apparatus of claim 1, wherein: the PCB clamp comprises a first connecting plate sliding on the sliding rail, a bearing groove arranged on the first connecting plate, and a floating clamping plate arranged in the bearing groove and positioned to press two adjacent edges of the PCB.

3. The PCB board automatic assembling and welding apparatus of claim 2, wherein: the bearing groove is close to one side of the bottom plate and is provided with an opening corresponding to the wire clamping groove, the bottom of the opening is provided with a through hole penetrating through the upper surface and the lower surface of the first connecting plate, and the first connecting plate is provided with a pin hole.

4. The PCB board automatic assembling and welding apparatus of claim 1, wherein: the PCB feeding mechanism comprises a first driving piece, a dragging plate driven by the first driving piece to move up and down, a PCB bin arranged on the dragging plate and stacked with a plurality of layers of trays, a transfer device for moving the trays in the PCB bin to a reference position, and a PCB grabbing mechanism for grabbing the PCB from the trays to the tooling carrier.

5. The automated PCB assembly welding apparatus of claim 4, wherein: the PCB feeding mechanism is provided with a first pre-positioning mechanism for initially positioning the PCB before feeding and mounting, the first pre-positioning mechanism comprises a positioning cylinder and positioning claws driven by the positioning cylinder to open or close, and the four positioning claws are distributed in an equiangular annular mode.

6. The PCB board automatic assembling and welding apparatus of claim 2, wherein: the PCB feeding mechanism comprises a spreading mechanism which spreads the PCB clamp, and the spreading mechanism comprises a fourth cylinder, a second connecting plate which is driven by the fourth cylinder to move up and down and supports the bottom of the first connecting plate, a spreading cylinder which is fixed on the second connecting plate, and a spreading block which is driven by the spreading cylinder to spread the floating clamping plates in the tool carrier.

7. The PCB panel automated assembly soldering apparatus of claim 3, wherein: the positioning and pressing mechanism comprises a first positioning and pressing mechanism which is arranged at the position of the double-station wire harness welding unit and is used for accurately positioning a wire harness welding part, and the first positioning and pressing mechanism comprises a fifth cylinder, a third connecting plate which is driven by the fifth cylinder to move parallel to the conveying line, a sixth cylinder and a seventh cylinder which are fixed on the third connecting plate, a pin roll which is driven by the sixth cylinder to move up and down and extend into the pin hole of the PCB clamp, a wire harness clamping block which is driven by the seventh cylinder to move up and down and extend into the through hole of the PCB clamp, and a wire harness end pressing mechanism which is matched with the wire harness clamping block to clamp and fix the end of the wire harness firmly.

8. The PCB panel automated assembly soldering apparatus of claim 3, wherein: the PCB clamp positioning mechanism is arranged on one side of the conveying line and corresponds to the position of the outer cover feeding mechanism and used for positioning the PCB clamp, and comprises a twelfth cylinder and a pin shaft which is driven by the twelfth cylinder to move up and down and stretches into the pin hole of the PCB clamp.

9. The PCB board automatic assembling and welding apparatus of claim 1, wherein: the positioning and compressing mechanism comprises a second positioning and compressing mechanism which is arranged at the position of the double-station outer cover welding unit and is used for accurately positioning the outer cover, and the second positioning and compressing mechanism comprises a fourteenth cylinder, a fourth connecting plate which is driven by the fourteenth cylinder to move up and down, a gland which is arranged below the end part of the fourth connecting plate and is profiled with the outer cover profile, positioning clamping claws which are symmetrically arranged on the diagonal line of the gland, and a fifteenth cylinder which is fixed on the fourth connecting plate and is used for driving the positioning clamping claws to open or close.