Automatic precise welding equipment for wiring terminal

Abstract

The invention relates to the technical field of wiring terminal welding, and discloses wiring terminal automatic precision welding equipment which comprises a welding table, a mounting frame is arranged at the upper end of the welding table, a welding mechanism is fixed to the mounting frame, a lifting rod is movably arranged at the lower end of the welding mechanism, and a welding head is connected to the lower end of the lifting rod. A tool groove is formed in the upper end face of the welding table and located below the welding head. According to the automatic precise welding equipment for the wiring terminal, by means of power generated when a rotating rod moves and through turning transmission of two sets of bevel gears, a large chain wheel drives a rotating shaft on a small chain wheel to rotate at a high speed through a chain, a plurality of sets of brush heads on the periphery of a rotating table sequentially work, and brush bristles are used for brushing part of rosin paste when passing through a paste plate; and then the bristles carrying the rosin paste are in contact with the tin wire which just moves slowly and linearly in the wire storage pipe in the downward movement process, the rosin paste is wiped to the surface of the tin wire, and the automatic coating effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of terminal welding, and in particular to automated precision welding equipment for terminal blocks. Background Art

[0002] The terminal block is an accessory product used to achieve electrical connection. It is a piece of metal sheet sealed in insulating plastic. There are holes at both ends for inserting wires. It is convenient and fast, and suitable for interconnecting a large number of wires. In the power industry, there are special terminal blocks and terminal boxes, which are all terminal blocks, including single-layer, double-layer, current, and voltage. There are two methods for welding terminal blocks and wires. The traditional method usually uses manual crimping pliers as the power. The clamping head at the jaws is made of steel forming molds, and then an electric welding pen is used for welding. Now in most cases, the welding head of the welding equipment is directly pressed down, and the tin wire on the wire feeder is used to weld the terminal blocks and wires.

[0003] There are certain technical problems in the use of existing welding equipment. First, most of the terminal blocks need to be welded with multiple groups of wires at the same time. During the welding process, the multiple groups of wires lack unified positioning and are prone to displacement due to pressure, resulting in poor welding effect. Second, during the soldering process, due to the poor fusion effect between the tin wire and the wire monomer, flux, such as rosin, is required. Currently, rosin paste is applied to the tin wire or wire manually, which is time-consuming and labor-intensive and reduces work efficiency.

[0004] To sum up, considering that the existing facilities cannot meet the work needs, we propose an automated precision welding equipment for terminal blocks. Summary of the invention

[0005] The main purpose of the present invention is to provide an automated precision welding device for terminal blocks, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: An automated precision welding device for terminal blocks comprises a welding table, wherein a mounting frame is arranged at the upper end of the welding table, a welding mechanism is fixed on the mounting frame, a lifting rod is movably arranged at the lower end of the welding mechanism, a welding head is connected to the lower end of the lifting rod, and a tooling groove is provided on the upper end surface of the welding table and below the welding head.

[0007] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, a junction box is placed inside the tooling slot, and the front end face of the junction box includes several groups of wiring metal sheets, each group of the wiring metal sheets is in contact with the copper wire ends of the wires, the wires are located in the tooling slot, and several groups of the wires diverge outward from the cable, and the number of the wiring metal sheets and the wires is preferably 3-8 groups.

[0008] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, guide grooves are provided at the bottom of the tooling groove and on both sides of each group of wires, an L-shaped clamping plate is vertically provided through each group of the guide grooves, and a curved clamping groove acting on the wires is provided on the inner side surface of the L-shaped clamping plate.

[0009] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the right end face of the welding table is riveted with a limit seat, the inner side surface of the limit seat is provided with a vertical limit groove for the movement of the L-shaped support, the L-shaped support is located above the welding table, and a cylinder rod is welded to the lower end of the L-shaped support, the cylinder rod extends upward from the inside of the cylinder, and the cylinder is located inside the welding table.

[0010] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, a bidirectional screw is rotatably arranged inside the welding table and directly below the tooling slot, both ends of the bidirectional screw are fixed by the first bearing seat and the inner wall of the welding table, and several groups of forward spiral patterns and reverse spiral patterns are symmetrically distributed on the bidirectional screw, a moving seat is installed on each group of the forward spiral patterns and reverse spiral patterns, and a screw nut sleeve acting on the forward spiral patterns or the reverse spiral patterns is installed inside each group of the moving seats, and the upper end of the moving seat is welded to the lower end of the L-shaped clamp.

[0011] As a preferred solution of the terminal automation precision welding equipment described in the present invention, one end of the bidirectional screw is sleeved with a large gear, the lower end of the large gear is meshed with a small gear, the small gear is sleeved on the output shaft of the first servo motor, and the first servo motor is horizontally arranged inside the welding table.

[0012] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the inner side surface of the L-shaped support is equipped with a tin feeding cylinder through a rotating bracket, and tin wire is wound on the tin feeding cylinder, and the tin wire extends toward the inside of the guide seat, and the guide seat is riveted to the upper end surface of the L-shaped support, and the first guide wheel and the second guide wheel acting on the tin wire are sequentially installed in the guide seat, the upper end surface of the L-shaped support is located at the left end of the guide seat and is connected to a wire feeding seat, and a wire storage tube is connected to the middle position on the left side of the wire feeding seat, and the tin wire moves in the tube of the wire storage tube.

[0013] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, wherein: a No. 1 rotating rod and a No. 2 rotating rod are respectively vertically installed inside the wire feeding seat, and the lower ends of the No. 1 rotating rod and the No. 2 rotating rod are fixed by the second bearing seat and the bottom of the wire feeding seat, and the number of the second bearing seat is 2 groups, and a No. 1 wire pressing wheel is sleeved on the No. 1 rotating rod, and a No. 2 wire pressing wheel is sleeved on the No. 2 rotating rod, and the gap between the No. 1 wire pressing wheel and the No. 2 wire pressing wheel is for the tin wire to pass through, a No. 1 gear is sleeved on the No. 1 rotating rod and located above the No. 1 wire pressing wheel, and a No. 2 gear is sleeved on the No. 2 rotating rod and located above the No. 2 wire pressing wheel, the No. 1 gear and the No. 2 gear are meshed with each other, and the top of the No. 2 rotating rod is connected to the second servo motor through a coupling, and the second servo motor is arranged through the upper end surface of the wire feeding seat.

[0014] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the upper end face of the wire storage tube is equipped with a paste applicator, a rotating shaft is rotatably arranged at the middle position inside the paste applicator, both ends of the rotating shaft are fixed by inner bearings and the inner wall of the paste applicator, a turntable is sleeved on the middle part of the rotating shaft, brush heads are evenly installed around the outer circle of the turntable, the number of the brush heads is preferably 4-10 groups, each group of the brush heads is evenly distributed with several groups of bristles, a paste plate is movably installed on the outer side surface of the paste applicator, the bottom of the paste plate is arranged in the paste applicator through a flip roller, the inner surface of the paste plate is coated with a layer of rosin paste, the several groups of bristles are in contact with the rosin paste during movement, and the bristles carrying the rosin paste enter the wire storage tube during downward movement.

[0015] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, one end of the rotating shaft extends out of the paste applicator and is sleeved with a small sprocket, the upper end of the No. 1 rotating rod is sleeved with a first bevel gear, a second bevel gear is meshedly provided on one side of the first bevel gear, the second bevel gear is sleeved on the end of the horizontal shaft, the horizontal shaft is located inside the wire feeding seat, the end of the horizontal shaft away from the second bevel gear is fixed by a third bearing seat and the inner wall of the wire feeding seat, a large sprocket is sleeved on the middle part of the horizontal shaft, and the large sprocket and the small sprocket are connected and transmitted by a chain.

[0016] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, a water-cooled radiator is arranged inside the welding table and directly below the wire storage tube, and the water-cooled radiator includes a water-cooling cylinder, an inner cavity, a guide hole, a pressure column and an arc head. The water-cooling cylinder is fixed inside the welding table, and an inner cavity is opened in the middle position inside the water-cooling cylinder. A guide hole connected to the inner cavity is opened at the center position of the top of the water-cooling cylinder, and the guide hole is for the pressure column to pass upward. An arc head is arranged at the upper end of the pressure column, and the arc head passes through the upper end surface of the welding table.

[0017] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the water-cooled radiator also includes a pressure plug, a spring, a first one-way valve and a second one-way valve, the pressure column extends downward into the inner cavity and is connected to the pressure plug, the pressure plug and the cavity wall of the inner cavity are fully fitted, a spring sleeved on the outside of the pressure column is connected between the pressure plug and the top of the water-cooling cylinder, and a group of second one-way valves and two groups of first one-way valves are respectively installed on the cavity wall of the inner cavity near the bottom, and the control directions of the second one-way valve and the first one-way valve are opposite.

[0018] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, wherein: the outer sides of the two groups of the first one-way valves are connected with flow tubes, the flow tubes extend upward from the upper end surface of the welding table, and the tops of the flow tubes are equipped with water nozzles acting on the welding heads, and the number of the water nozzles is 2 groups; the outer side of the second one-way valve is connected with a water inlet pipe, and the upper end of the water inlet pipe is connected to a cooling water tank, and cooling water is stored in the cooling water tank, and the cooling water tank is fixed on the upper end surface of the welding table close to the wire storage tube.

[0019] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the front end of the tooling slot is connected to a cable clamping slot for the cable.

[0020] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, an annular limiting sleeve acting on the tin wire is installed at the end of the wire storage tube.

[0021] As a preferred solution of the automatic precision welding equipment for connecting terminals described in the present invention, the L-shaped clamping plate moves linearly in the guide groove.

[0022] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, every two groups of L-shaped clamping plates face each other to form a clamping unit.

[0023] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the back plate of the L-shaped support is located in the vertical limiting groove.

[0024] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, an opening for the chain to pass through is provided on the left side of the wire feed seat.

[0025] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the lower end of the paste applicator is connected to the inside of the wire storage tube.

[0026] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the first gear moves clockwise, and the second gear moves counterclockwise.

[0027] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the tin wire is in contact with the wheel surfaces of the first and second wire pressing wheels respectively.

[0028] As a preferred solution of the terminal automation precision welding equipment described in the present invention, wherein: the lower ends of the first guide wheel and the second guide wheel are both equipped with axles, the lower ends of the two groups of axles are fixed by the fourth bearing seat and the bottom of the guide seat, and the number of the fourth bearing seat is 2 groups.

[0029] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the water nozzle is arranged to be inclined upward.

[0030] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, a sealing cover is provided at the upper end of the cooling water tank.

[0031] The present invention provides an automatic precision welding device for terminal blocks through improvement, which has the following significant improvements and advantages compared with the prior art: Start the first servo motor to drive the small gear to rotate, and the bidirectional lead screw starts working through transmission, causing the two groups of L-shaped clamps on each clamping unit to move toward each other along the guide groove, and use their respective curved clamping grooves to clamp the wires together. Each group of clamping units acts on each group of wires synchronously to fix the position of each group of wires, solving the problem of displacement during welding, and can fix multiple groups of wires at one time, with a high degree of automation.

[0032] Starting the cylinder causes the cylinder rod to retract and drives the entire wire feeding structure to descend, so that the tin wire and the welding head descend together at the same speed and land in the area of ​​the wiring metal sheet and the copper wire head, avoiding the welding head from bending the tin wire with high precision.

[0033] With the help of the power of the rotating rod movement, through the reversing transmission of two sets of bevel gears, the large sprocket uses the chain to drive the rotating shaft on the small sprocket to rotate at high speed, and several sets of brush heads on a circle of the turntable work in turn. First, the bristles are used to brush off part of the rosin paste when passing through the paste plate, and then the bristles carrying the rosin paste are allowed to contact the tin wire that is slowly moving in a straight line in the wire tube during the downward movement, and the rosin paste is wiped onto the surface of the tin wire, thereby achieving the effect of automatic coating. In addition, due to the cyclic motion of several sets of brushes, the interval time of each coating is the same, and the coating is more even.

[0034] With the help of the power of the wire storage tube descending, the lower end of the wire storage tube comes into contact with the arc head extending out of the upper end surface of the welding table, pressing the arc head downward back into the welding table, causing the pressure column to drive the pressure plug to move downward in a straight line, causing pressure on the cooling water in the inner cavity, and with the help of the sealing extrusion force, the cooling water flushes open the two groups of first one-way valves, and the cooling water flows outward rapidly along the flow pipe and sprays outward from the water nozzle, so that the cooling water droplets fall evenly around the welding head, cools the welding head during work, automatically cools the welding head, and extends the service life of the welding head. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of an automated precision welding device for wiring terminals of the present invention; Figure 2 It is a schematic diagram of the specific structure of the tooling slot of the present invention; Figure 3 It is a schematic diagram of the specific structure of the bidirectional screw rod of the present invention; Figure 4 It is a schematic diagram of the upper end surface structure of the L-shaped support of the present invention; Figure 5 It is a schematic diagram of the transmission structure of the L-shaped support of the present invention; Figure 6 It is a schematic diagram of the internal structure of the wire feeding seat and the guide seat of the present invention; Figure 7 It is a schematic diagram of the movement route of the tin wire of the present invention; Figure 8 A schematic diagram of the connection between the first bevel gear and the second bevel gear of the present invention; Fig. 9 is a schematic diagram of the external structure of the ointment applicator of the present invention; Fig.10 It is a schematic diagram of the internal structure of the ointment applicator of the present invention; Fig.11 This is a schematic diagram of the installation position of the water sprinkler in the second embodiment of the present invention; Fig.12 This is a schematic diagram of the installation position of the medium-pressure column in the second embodiment of the present invention; Fig.13 This is a schematic diagram of the external connection of the water-cooled radiator of the present invention; Fig.14 It is a cross-sectional view of the water-cooling radiator of the present invention.

[0036] In the figure: 1. welding table; 2. mounting frame; 3. welding mechanism; 4. lifting rod; 5. welding head; 6. tooling slot; 7. cable; 8. wire; 9. water cooling radiator; 91. water cooling cylinder; 92. inner cavity; 93. guide hole; 94. pressure column; 95. arc head; 96. pressure plug; 97. spring; 98. first one-way valve; 99. second one-way valve; 10. two-way screw; 11. first bearing seat; 12. positive spiral pattern; 13. reverse spiral pattern; 14. moving seat; 15. screw nut sleeve; 16. L-shaped clamping plate; 17 curved clamping groove; 20. large gear; 21. small gear; 22. first servo motor; 30. L-shaped support; 31. cylinder; 32. cylinder rod; 33. rotating bracket; 34. tin feeding cylinder; 35. guide seat; 36. first guide wheel; 37. second guide wheel; 38. tin wire ; 40, wire feeder; 41, first rotating rod; 42, second rotating rod; 43, second bearing seat; 44, first pressing wheel; 45, second pressing wheel; 46, first gear; 47, second gear; 48, second servo motor; 49, first bevel gear; 50, horizontal axis; 51, second bevel gear; 52, third bearing seat; 53, large sprocket; 54, wire storage tube; 55, chain; 60, paste applicator; 6 1. Rotating shaft; 62. Inner bearing; 63. Small sprocket; 64. Turntable; 65. Brush head; 66. Brush hair; 67. Paste board; 68. Turning roller; 70. Flow pipe; 71. Water nozzle; 72. Cooling water tank; 73. Water inlet pipe; 80. Limit seat; 81. Junction box; 82. Wiring metal sheet; 83. Guide groove; 84. Annular limit sleeve; 85. Opening; 86. Wheel axle; 87. Fourth bearing seat. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0038] like Figure 1-10 As shown, this embodiment provides an automated precision welding device for terminal blocks, including a welding table 1, a mounting frame 2 is provided at the upper end of the welding table 1, which plays a role in installation and bearing, a welding mechanism 3 is fixed on the mounting frame 2, a lifting rod 4 is movably provided at the lower end of the welding mechanism 3, a welding head 5 is connected to the lower end of the lifting rod 4, and a tooling groove 6 is provided on the upper end surface of the welding table 1 and below the welding head 5.

[0039] A junction box 81 is placed inside the tooling slot 6. The front end of the junction box 81 includes a plurality of groups of junction metal sheets 82. Each group of junction metal sheets 82 is in contact with the copper wire ends of the conductors 8. The junction metal sheets 82 and the conductors 8 are closely arranged. Figure 1 and 2 shown.

[0040] Among them, the wire 8 is located in the tooling slot 6, and several groups of wires 8 diverge from the cable 7 to the tooling slot 6. The front end of the tooling slot 6 is connected to a cable clamping slot for the cable 7, which plays a role of limiting support. Figure 1 and 2 shown.

[0041] Furthermore, a bidirectional screw rod 10 is rotatably arranged inside the welding table 1 and directly below the tooling slot 6. Both ends of the bidirectional screw rod 10 are fixed by the first bearing seat 11 and the inner wall of the welding table 1. Figure 3 shown.

[0042] In this embodiment, a plurality of groups of forward spiral patterns 12 and reverse spiral patterns 13 are symmetrically distributed on the bidirectional screw 10, and a moving seat 14 is installed on each group of forward spiral patterns 12 and reverse spiral patterns 13, and a screw nut sleeve 15 acting on the forward spiral patterns 12 or the reverse spiral patterns 13 is installed inside each group of moving seats 14, and a screw nut for spiral motion is arranged inside the screw nut sleeve 15, such as Figure 3 shown.

[0043] In this embodiment, the upper end of the movable seat 14 and the lower end of the L-shaped clamping plate 16 are welded, and each two groups of L-shaped clamping plates 16 face each other to form a clamping unit. The bottom of the tooling slot 6 and the two sides of each group of wires 8 are provided with guide grooves 83, and each group of guide grooves 83 is vertically penetrated by an L-shaped clamping plate 16. The L-shaped clamping plate 16 moves linearly in the guide groove 83, and the guide groove 83 plays a role of limiting guide. The inner side of the L-shaped clamping plate 16 is provided with a curved clamping groove 17 acting on the wire 8, such as Figure 2 and 3 shown.

[0044] Among them, one end of the bidirectional screw rod 10 is sleeved with a large gear 20, and the lower end of the large gear 20 is meshed with a small gear 21, and the small gear 21 is sleeved on the output shaft of the first servo motor 22, and the first servo motor 22 is horizontally arranged inside the welding table 1, such as Figure 3 shown.

[0045] Furthermore, the right end face of the welding table 1 is riveted with a limit seat 80, and the inner side of the limit seat 80 is provided with a vertical limit groove for the L-shaped support 30 to move. The back plate of the L-shaped support 30 is located in the vertical limit groove and can move up and down in the vertical limit groove, playing a role of limit guide and improving the stability of the cylinder drive. Figure 1 and 4 shown.

[0046] The L-shaped support 30 is located above the welding table 1, and a cylinder rod 32 is welded to the lower end of the L-shaped support 30. The cylinder rod 32 extends upward from the inside of the cylinder 31, and the cylinder 31 is located inside the welding table 1 (the cylinder 31 and other driving structures are electrically linked). Figure 4 and 5 shown.

[0047] Furthermore, a tin delivery cylinder 34 is installed on the inner side of the L-shaped support 30 through a rotating bracket 33, and a tin wire 38 is wound on the tin delivery cylinder 34. The tin wire 38 extends to the inside of the guide seat 35. The guide seat 35 is riveted to the upper end surface of the L-shaped support 30. A first guide wheel 36 and a second guide wheel 37 acting on the tin wire 38 are installed in the guide seat 35 in sequence. The movement of the tin wire 38 causes the guide wheel in contact with it to rotate, which plays a role of guiding and limiting. Figure 4 , 6 and 7.

[0048] The lower ends of the first guide wheel 36 and the second guide wheel 37 are both installed with axles 86, and the lower ends of the two sets of axles 86 are fixed by the fourth bearing seat 87 and the bottom of the guide seat 35, and the axles 86 rotate around the fourth bearing seat 87. Figure 7 shown.

[0049] Furthermore, the upper end surface of the L-shaped support 30 is connected to the left end of the guide seat 35 and is provided with a wire feeding seat 40. Figure 4 shown.

[0050] Specifically, a No. 1 rotating rod 41 and a No. 2 rotating rod 42 are respectively vertically installed inside the wire feeding seat 40, and the lower ends of the No. 1 rotating rod 41 and the No. 2 rotating rod 42 are fixed by the second bearing seat 43 and the bottom of the wire feeding seat 40. A No. 1 wire pressing wheel 44 is sleeved on the No. 1 rotating rod 41, and a No. 2 wire pressing wheel 45 is sleeved on the No. 2 rotating rod 42. The gap between the No. 1 wire pressing wheel 44 and the No. 2 wire pressing wheel 45 is for the tin wire 38 to pass through. Figure 6 and 7 shown.

[0051] The tin wire 38 contacts the wheel surfaces of the first wire pressing wheel 44 and the second wire pressing wheel 45 respectively, and the friction force is converted into a sliding force. Figure 6 and 7 shown.

[0052] Specifically, a No. 1 gear 46 is sleeved on the No. 1 rotating rod 41 and located above the No. 1 wire pressing wheel 44, and a No. 2 gear 47 is sleeved on the No. 2 rotating rod 42 and located above the No. 2 wire pressing wheel 45. The No. 1 gear 46 and the No. 2 gear 47 are meshed (the two are of the same size), the No. 1 gear 46 moves clockwise, and the No. 2 gear 47 moves counterclockwise. The top of the No. 2 rotating rod 42 is connected to a second servo motor 48 through a coupling, and the second servo motor 48 is arranged to penetrate the upper end surface of the wire feeding seat 40, as shown in FIG. Figure 6 and 7 shown.

[0053] Further, a wire storage tube 54 is connected to the middle position on the left side of the wire feeding seat 40, and the tin wire 38 moves in the wire storage tube 54. Figure 4 shown.

[0054] Specifically, the upper end surface of the wire storage tube 54 is provided with an ointment applicator 60, and the lower end of the ointment applicator 60 is connected to the inside of the wire storage tube 54, as shown in FIG. Figure 4 and 5 shown.

[0055] In this embodiment, a rotating shaft 61 is rotatably arranged in the middle of the ointment applicator 60, and both ends of the rotating shaft 61 are fixed by inner bearings 62 and the inner wall of the ointment applicator 60. A turntable 64 is sleeved in the middle of the rotating shaft 61, and brush heads 65 are evenly installed around the outer periphery of the turntable 64. Each group of brush heads 65 has a plurality of groups of bristles 66 evenly distributed on them. Fig. 9 and 10 shown.

[0056] In this embodiment, a paste plate 67 is movably mounted on the outer side of the paste applicator 60, and the bottom of the paste plate 67 is arranged in the paste applicator 60 through a flip roller 68. The paste plate 67 is opened by rotating the flip roller 68. The inner surface of the paste plate 67 is coated with a layer of rosin paste (rosin paste can help and promote the welding process in the welding process, and also has a protective effect to prevent oxidation reaction). A plurality of groups of bristles 66 contact the rosin paste during movement (the length of the bristles 66 is designed to be sufficient to contact the rosin paste on the paste plate 67). The bristles 66 carrying the rosin paste enter the tube of the wire storage tube 54 during the downward movement, as shown in FIG. Fig. 9 and 10 shown.

[0057] Among them, one end of the rotating shaft 61 extends out of the paste applicator 60 and is sleeved with a small sprocket 63, the upper end of the No. 1 rotating rod 41 is sleeved with a first bevel gear 49, and a second bevel gear 51 is meshed on one side of the first bevel gear 49. The second bevel gear 51 is sleeved on the end of the horizontal shaft 50, and the horizontal shaft 50 is located inside the wire feeding seat 40, as shown in FIG. Figure 5 and 8 shown.

[0058] Among them, one end of the horizontal shaft 50 away from the second bevel gear 51 is fixed by the third bearing seat 52 and the inner wall of the wire feeding seat 40, which plays a role of connection and fixing. The middle part of the horizontal shaft 50 is sleeved with a large sprocket 53, and the large sprocket 53 and the small sprocket 63 are connected and transmitted by a chain 55. Figure 5 and 8 shown.

[0059] The left side of the wire feeder 40 is provided with an opening 85 for the chain 55 to pass through. Figure 6 shown.

[0060] Furthermore, an annular limiting sleeve 84 acting on the tin wire 38 is installed at the end of the wire storage tube 54, and the annular limiting sleeve 84 limits the tin wire 38 to prevent it from bending (the annular limiting sleeve 84 does not directly contact the area carrying rosin on the tin wire 38 to prevent the rosin from being scraped off). Figure 4 shown.

[0061] When the present embodiment is in use, the junction box 81 is first placed stably in a matching tooling slot 6, and then the cable 7 is placed horizontally in the cable clamping slot. The several groups of wires 8 on the cable 7 are extended respectively, so that the wiring metal sheets 82 are in contact with the copper wire ends of the wires 8. At this time, the first servo motor 22 is started to drive the small gear 21 to rotate, and the large gear 20 is decelerated through meshing, and the bidirectional screw 10 starts to work, causing the two groups of L-shaped clamps 16 on each group of clamping units to move toward each other along the guide groove 83 (the screw nut sleeves 15 inside the two groups of moving seats 14 act on the forward spiral pattern 12 or the reverse spiral pattern 13 respectively), and the wires 8 are clamped together by their respective curved clamping grooves 17. Each group of clamping units acts on each group of wires 8 synchronously, so that the position of each group of wires 8 is fixed to avoid displacement during welding.

[0062] At this time, the second servo motor 48 is started to drive the second rotating rod 42 to rotate slowly counterclockwise, and through the meshing action of the first gear 46 and the second gear 47, the first rotating rod 41 is synchronously rotated clockwise. The first wire pressing wheel 44 and the second wire pressing wheel 45 act on the tin wire 38 at the same time during the circular motion, and the tin wire 38 is driven to move linearly to the left by the friction force (at the same time, the tin wire 38 will cause the tin feeding cylinder 34 to continuously discharge the wire through the traction relationship, and the tin wire 38 passes through the guide action of the first guide wheel 36 and the second guide wheel 37 in turn). The tin wire 38 moves to the left in the wire storage tube 54, passes through the annular limiting sleeve 84 which serves as a limiting function and extends outward, and moves to the position between the welding head 5 and the wiring metal sheet 82. At this time, the lifting rod 4 drives the welding head 5 to descend, and after contacting the tin wire 38, the cylinder 31 is started, causing the cylinder rod 32 to be retracted, and driving the entire wire feeding structure to descend, so that the tin wire 38 and the welding head 5 maintain the same speed and descend together, and fall on the area of ​​the wiring metal sheet 82 and the copper wire head, and the two are welded.

[0063] When the No. 1 rotating rod 41 rotates, the first bevel gear 49 is caused to rotate accordingly, and through the change of direction meshing with the second bevel gear 51, the large sprocket 53 coaxial with the second bevel gear 51 moves synchronously, and the large sprocket 53 drives the rotating shaft 61 on the small sprocket 63 to rotate at high speed by the chain 55, causing the turntable 64 to make a circular motion inside the paste applicator 60, and a plurality of groups of brush heads 65 on a circle of the turntable 64 work in sequence, first using the bristles 66 to brush off part of the rosin paste when passing through the paste plate 67, and then allowing the bristles 66 carrying the rosin paste to contact the tin wire 38 that is moving slowly in a straight line in the wire storage tube 54 during the downward movement, and wipe the rosin paste onto the surface of the tin wire 38, thereby achieving the effect of automatic coating. Embodiment 2

[0064] On the basis of the first embodiment, the welding head 5 will generate high temperature during welding. Although the welding head 5 is made of heat-resistant material, the high temperature will reduce the life of the welding head 5 after frequent use, and will also cause the welding temperature to be locally overheated. In order to solve the above problems, a water-cooled radiator 9 is arranged inside the welding table 1 and directly below the wire storage tube 54, such as Figure 11-14 shown.

[0065] Specifically, the water-cooled radiator 9 includes a water-cooled cylinder 91, an inner cavity 92, a guide hole 93, a pressure column 94 and an arc head 95. Fig.13 and 14 shown.

[0066] In this embodiment, the water-cooling cylinder 91 is fixed inside the welding table 1, and an inner cavity 92 is opened in the middle position of the inner part of the water-cooling cylinder 91. A guide hole 93 connected to the inner cavity 92 is opened at the top center position of the water-cooling cylinder 91. The guide hole 93 is for the pressure column 94 to pass upward, and plays a role of limiting guidance. The upper end of the pressure column 94 is provided with an arc head 95, and the arc head 95 passes through the upper end surface of the welding table 1.

[0067] Furthermore, the water-cooled radiator 9 further includes a pressure plug 96, a spring 97, a first one-way valve 98 and a second one-way valve 99. Fig.13 and 14 shown.

[0068] In this embodiment, the pressure column 94 extends downward into the inner cavity 92 and is connected to a pressure plug 96. The pressure plug 96 and the cavity wall of the inner cavity 92 are fully fitted (sliding seal). A spring 97 sleeved on the outside of the pressure column 94 is connected between the pressure plug 96 and the top of the water-cooling cylinder 91. After being compressed, the spring 97 has a restoring elastic force to drive the pressure column 94 back to its original position.

[0069] In this embodiment, a group of second one-way valves 99 and two groups of first one-way valves 98 are respectively installed on the cavity wall near the bottom of the inner cavity 92, and the control directions of the second one-way valves 99 and the first one-way valves 98 are opposite (both are elastic control valves).

[0070] The outer sides of the two sets of first one-way valves 98 are connected to flow pipes 70, which extend upward from the upper end surface of the welding table 1. A water nozzle 71 acting on the welding head 5 is installed on the top of the flow pipe 70. The water nozzle 71 is arranged obliquely upward, and the water nozzle 71 has the function of refining the cooling water into droplets, such as Figure 11-13 shown.

[0071] The outer side of the second one-way valve 99 is connected to a water inlet pipe 73, and the upper end of the water inlet pipe 73 is connected to a cooling water tank 72. The cooling water tank 72 stores cooling water. The cooling water tank 72 is fixed to the upper end surface of the welding table 1 near the wire storage tube 54. Figure 11-13 shown.

[0072] Furthermore, a cover is provided at the upper end of the cooling water tank 72 .

[0073] When the present embodiment is in use, when the cylinder rod 32 is recovered and drives the entire wire feeding structure to descend, the wire storage tube 54 descends accordingly, and the lower end portion of the wire storage tube 54 contacts the arc head 95 extending out from the upper end surface of the welding table 1, pressing the arc head 95 downward back into the welding table 1, causing the pressure column 94 to drive the pressure plug 96 to move downward in a straight line, causing pressure on the cooling water in the inner cavity 92, and with the help of the sealing extrusion force, the cooling water flushes open the two groups of first one-way valves 98, and the cooling water flows outward rapidly along the flow tube 70 and is sprayed outward from the water nozzle 71, so that the cooling water droplets fall evenly around the welding head 5, thereby cooling the welding head 5 during operation.

[0074] Afterwards, the wire storage tube 54 returns to its original position, and the pressure column 94 and the pressure plug 96 return upward under the action of the restoring elastic force of the compressed spring 97. At this time, the inner cavity 92 forms a negative pressure state, and the air pressure acts on the second one-way valve 99 to open the second one-way valve 99. The cooling water in the cooling water tank 72 is continuously injected into the inner cavity 92 through the water inlet pipe 73 until the internal and external balance is formed for the next use.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated precision welding device for terminal blocks, comprising a welding table (1), characterized in that: The upper end of the welding table (1) is provided with a mounting frame (2), a welding mechanism (3) is fixed on the mounting frame (2), a lifting rod (4) is movably provided at the lower end of the welding mechanism (3), a welding head (5) is connected to the lower end of the lifting rod (4), and a tooling groove (6) is provided on the upper end surface of the welding table (1) and below the welding head (5); A junction box (81) is placed inside the tooling slot (6), the front end surface of the junction box (81) includes a plurality of groups of junction metal sheets (82), each group of the junction metal sheets (82) is in contact with the copper wire ends of the wires (8), the wires (8) are located in the tooling slot (6), a plurality of groups of the wires (8) are diverged outward from the cable (7), the bottom of the tooling slot (6) and both sides of each group of wires (8) are provided with guide grooves (83), each group of the guide grooves (83) is vertically penetrated by an L-shaped clamping plate (16), and the inner side surface of the L-shaped clamping plate (16) is provided with a curved clamping groove (17) acting on the wires (8); A limit seat (80) is riveted to the right end surface of the welding table (1), and a vertical limit groove for the L-shaped support (30) to move is provided on the inner side surface of the limit seat (80). The L-shaped support (30) is located above the welding table (1), and a cylinder rod (32) is welded to the lower end of the L-shaped support (30). The cylinder rod (32) extends upward from the inside of the cylinder (31), and the cylinder (31) is located inside the welding table (1); A tin feeding cylinder (34) is installed on the inner side surface of the L-shaped support (30) through a rotating bracket (33), and a tin wire (38) is wound on the tin feeding cylinder (34). The tin wire (38) extends toward the inside of the guide seat (35). The guide seat (35) is riveted to the upper end surface of the L-shaped support (30). A first guide wheel (36) and a second guide wheel (37) acting on the tin wire (38) are installed in sequence in the guide seat (35). The upper end surface of the L-shaped support (30) is located at the left end of the guide seat (35) and is connected to a wire feeding seat (40). A wire storage tube (54) is connected to the middle position on the left side of the wire feeding seat (40), and the tin wire (38) moves in the wire storage tube (54). The upper end surface of the wire storage tube (54) is provided with an ointment applicator (60), a rotating shaft (61) is rotatably provided in the middle position inside the ointment applicator (60), both ends of the rotating shaft (61) are fixed by means of an inner bearing (62) and the inner wall of the ointment applicator (60), a turntable (64) is sleeved in the middle of the rotating shaft (61), brush heads (65) are evenly provided around the outer periphery of the turntable (64), each group of the brush heads (65) is evenly distributed with a plurality of groups of bristles (66), an outer side surface of the ointment applicator (60) is movably provided with an ointment plate (67), the bottom of the ointment plate (67) is provided in the ointment applicator (60) by means of a turning roller (68), the inner surface of the ointment plate (67) is coated with a layer of rosin paste, the plurality of groups of bristles (66) are in contact with the rosin paste during movement, and the bristles (66) carrying the rosin paste enter the wire storage tube (54) during downward movement; One end of the rotating shaft (61) extends out of the paste applicator (60) and is sleeved with a small sprocket (63); the upper end of the No. 1 rotating rod (41) is sleeved with a first bevel gear (49); one side of the first bevel gear (49) is meshed with a second bevel gear (51); the second bevel gear (51) is sleeved on the end of the horizontal shaft (50); the horizontal shaft (50) is located inside the wire feeding seat (40); one end of the horizontal shaft (50) away from the second bevel gear (51) is fixed by a third bearing seat (52) and the inner wall of the wire feeding seat (40); a large sprocket (53) is sleeved on the middle part of the horizontal shaft (50); the large sprocket (53) and the small sprocket (63) are connected and driven by a chain (55).

2. The automatic precision welding equipment for terminal blocks according to claim 1, characterized in that: A bidirectional screw (10) is rotatably arranged inside the welding table (1) and directly below the tooling groove (6); both ends of the bidirectional screw (10) are fixed by a first bearing seat (11) and the inner wall of the welding table (1); a plurality of groups of positive spiral patterns (12) and negative spiral patterns (13) are symmetrically distributed on the bidirectional screw (10); a movable seat (14) is installed on each group of the positive spiral patterns (12) and the negative spiral patterns (13); a screw nut sleeve (15) acting on the positive spiral patterns (12) or the negative spiral patterns (13) is installed inside each group of the movable seats (14); and the upper end of the movable seat (14) is welded to the lower end of the L-shaped clamping plate (16).

3. The automatic precision welding equipment for terminal blocks according to claim 2 is characterized in that: A large gear (20) is sleeved on one end of the bidirectional screw rod (10), a small gear (21) is meshedly arranged on the lower end of the large gear (20), and the small gear (21) is sleeved on the output shaft of a first servo motor (22), and the first servo motor (22) is horizontally arranged inside the welding table (1).

4. The automatic precision welding equipment for terminal blocks according to claim 1, characterized in that: A first rotating rod (41) and a second rotating rod (42) are respectively vertically mounted inside the wire feeding seat (40), and the lower ends of the first rotating rod (41) and the second rotating rod (42) are fixed via a second bearing seat (43) and the bottom of the wire feeding seat (40). A first wire pressing wheel (44) is sleeved on the first rotating rod (41), and a second wire pressing wheel (45) is sleeved on the second rotating rod (42). The gap between the first wire pressing wheel (44) and the second wire pressing wheel (45) is used for the tin wire (3 8) passes through, a first gear (46) is sleeved on the first rotating rod (41) and located above the first wire pressing wheel (44), a second gear (47) is sleeved on the second rotating rod (42) and located above the second wire pressing wheel (45), the first gear (46) and the second gear (47) are meshed, the top of the second rotating rod (42) is connected to a second servo motor (48) through a coupling, and the second servo motor (48) is arranged to pass through the upper end surface of the wire feeding seat (40).

5. The automatic precision welding equipment for terminal blocks according to claim 1, characterized in that: A water-cooling radiator (9) is arranged inside the welding table (1) and directly below the wire storage tube (54). The water-cooling radiator (9) comprises a water-cooling cylinder (91), an inner cavity (92), a guide hole (93), a pressure column (94) and an arc head (95). The water-cooling cylinder (91) is fixed inside the welding table (1). The inner cavity (92) is provided at the middle position inside the water-cooling cylinder (91). A guide hole (93) connected to the inner cavity (92) is provided at the center position of the top of the water-cooling cylinder (91). The guide hole (93) is for the pressure column (94) to pass upward. The upper end of the pressure column (94) is provided with an arc head (95). The arc head (95) passes through the upper end surface of the welding table (1).

6. The automatic precision welding equipment for terminal blocks according to claim 5, characterized in that: The water-cooled radiator (9) further comprises a pressure plug (96), a spring (97), a first one-way valve (98) and a second one-way valve (99); the pressure column (94) extends downward into the inner cavity (92) and is connected to the pressure plug (96); the pressure plug (96) and the cavity wall of the inner cavity (92) are fully fitted; a spring (97) sleeved on the outside of the pressure column (94) is connected between the pressure plug (96) and the top of the water-cooled cylinder (91); a group of second one-way valves (99) and two groups of first one-way valves (98) are respectively installed on the cavity wall of the inner cavity (92) near the bottom; the control directions of the second one-way valve (99) and the first one-way valve (98) are opposite.

7. The automatic precision welding equipment for terminal blocks according to claim 6, characterized in that: The outer sides of the two groups of the first one-way valves (98) are connected to flow pipes (70), the flow pipes (70) extending upward from the upper end surface of the welding table (1), the top of the flow pipes (70) being provided with a water nozzle (71) acting on the welding head (5), the outer side of the second one-way valve (99) is connected to a water inlet pipe (73), the upper end of the water inlet pipe (73) being connected to a cooling water tank (72), the interior of the cooling water tank (72) storing cooling water, the cooling water tank (72) being fixed to the upper end surface of the welding table (1) close to the wire storage tube (54) on one side.

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