Automatic precision welding equipment for terminal blocks

Abstract

The present invention relates to the technical field of terminal welding, and discloses an automated precision welding device for terminal blocks, comprising a welding table, wherein the upper end of the welding table is provided with a mounting frame, a welding mechanism is fixed on the mounting frame, a lifting rod is movably provided at the lower end of the welding mechanism, the lower end of the lifting rod is connected to a welding head, and a tooling slot is provided on the upper end surface of the welding table and below the welding head. The automated precision welding device for terminal blocks described in the present invention utilizes the power of the rotating rod during movement and the direction-changing transmission of two sets of bevel gears to enable the large sprocket to use the chain to drive the rotating shaft on the small sprocket to rotate at high speed, and several groups of brush heads on a circle of the turntable work in sequence, first using the bristles to brush off some rosin paste when passing through the paste board, and then allowing the bristles carrying the rosin paste to contact the tin wire that is slowly moving linearly in the wire tube during the downward movement, wiping the rosin paste onto the surface of the tin wire, thereby achieving the effect of automatic coating.

Description

Technical Field

[0001] The present 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 filled with terminal blocks. There are single-layer, double-layer, current and voltage terminals. There are two methods for welding terminal blocks and wires. The traditional method usually uses manual crimping pliers as 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] Existing welding equipment has certain technical problems when in use. First, most terminal blocks need to be welded to multiple sets of wires at the same time. During the welding process, the multiple sets 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, reducing 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:

[0007] An automated precision welding device for terminal blocks includes a welding table, an upper end of which is provided with a mounting frame, a welding mechanism is fixed on the mounting frame, a lifting rod is movably provided at the lower end of the welding mechanism, the lower end of the lifting rod is connected to a welding head, and a tooling groove is provided on the upper end surface of the welding table and below the welding head.

[0008] As a preferred solution of the automated 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 wires is preferably 3-8 groups.

[0009] 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 is provided on the inner side surface of the L-shaped clamping plate for acting on the wires.

[0010] 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, and 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 the lower end of the L-shaped support is welded with a cylinder rod, the cylinder rod extends upward from the inside of the cylinder, and the cylinder is located inside the welding table.

[0011] 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, and 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, and a movable 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 movable seats, and the upper end of the movable seat is welded to the lower end of the L-shaped splint.

[0012] As a preferred solution of the automatic precision welding equipment for terminal blocks 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.

[0013] 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, tin wire is wound on the tin feeding cylinder, and the tin wire extends toward the interior 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 the middle position on the left side of the wire feeding seat is connected to a wire storage tube, and the tin wire is moved in the tube of the wire storage tube.

[0014] As an optimal solution of the automatic precision welding equipment for terminal blocks described in the present invention, the wire feeding seat is vertically installed with a No. 1 rotating rod and a No. 2 rotating rod, the lower ends of the No. 1 rotating rod and the No. 2 rotating rod are fixed by a second bearing seat and the bottom of the wire feeding seat, the number of the second bearing seat is 2 groups, and the No. 1 rotating rod is sleeved with a No. 1 wire pressing wheel, and the No. 2 rotating rod is sleeved with a No. 2 wire pressing wheel, 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. The No. 1 rotating rod is sleeved with a No. 1 gear and is located above the No. 1 wire pressing wheel, and the No. 2 rotating rod is sleeved with a No. 2 gear and is located above the No. 2 wire pressing wheel, the No. 1 gear and the No. 2 gear are meshed, 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.

[0015] 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, and each group of the brush heads has several groups of bristles evenly distributed, a paste plate is movably mounted on the outer side surface of the paste applicator, the bottom of the paste plate is arranged in the paste applicator by 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.

[0016] 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 meshed with 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, the middle part of the horizontal shaft is sleeved with a large sprocket, and the large sprocket and the small sprocket are connected and transmitted by a chain.

[0017] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, a water-cooled radiator is provided inside the welding table and directly below the wire storage tube, 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, an inner cavity is provided in the middle position inside the water-cooling cylinder, a guide hole connected to the inner cavity is provided at the top center position of the water-cooling cylinder, the guide hole is for the pressure column to pass upward, and an arc head is provided at the upper end of the pressure column, and the arc head passes through the upper end surface of the welding table.

[0018] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the water-cooled radiator further comprises 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 near the bottom of the inner cavity, and the control directions of the second one-way valve and the first one-way valve are opposite.

[0019] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the two groups of the first one-way valves are connected to the outer sides of flow tubes, the flow tubes extend upward from the upper end surface of the welding table, and water nozzles acting on the welding heads are installed on the top of the flow tubes, and the number of the water nozzles is 2 groups; the outer side of the second one-way valve is connected to 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 interior of the cooling water tank, and the cooling water tank is fixed to the upper end surface of the welding table close to the wire storage tube.

[0020] 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.

[0021] 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.

[0022] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the L-shaped clamping plate moves linearly in the guide groove.

[0023] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, each two groups of L-shaped clamping plates face each other to form a clamping unit.

[0024] 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.

[0025] 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 feeder.

[0026] As a preferred solution of the automatic precision welding equipment for terminal blocks of the present invention, the lower end of the paste applicator is connected to the inside of the wire storage tube.

[0027] 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.

[0028] 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.

[0029] As a preferred solution of the automatic precision welding equipment for terminal blocks described in the present invention, the lower ends of the first guide wheel and the second guide wheel are both equipped with axles, and the lower ends of the two sets 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.

[0030] 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.

[0031] 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.

[0032] The present invention provides an improved automatic precision welding device for terminal blocks, which has the following significant improvements and advantages compared to the prior art:

[0033] Start the first servo motor to drive the small gear to rotate, and through the transmission, the bidirectional lead screw starts to work, causing the two sets of L-shaped clamping plates 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 set of clamping units acts on each set of wires synchronously to fix the position of each set of wires, solving the problem of displacement during welding. It can also fix multiple sets of wires at one time, with a high degree of automation.

[0034] 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 maintain the same speed and descend together, and land in the area of the wiring metal sheet and the copper wire head, avoiding the welding head from bending the tin wire, and achieving high precision.

[0035] With the help of the power of the rotating rod movement, the two sets of bevel gears are used for the direction change transmission, so that the large sprocket uses the chain to drive the rotating shaft on the small sprocket to rotate at high speed. Several sets of brush heads on a circle of the turntable work in turn, first using the bristles to brush off some rosin paste when passing through the paste board, and then allowing the bristles carrying the rosin paste to contact the tin wire that is slowly moving in a straight line in the wire tube during the downward movement, and wipe the rosin paste 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 brush heads, the interval time of each coating is the same, and the coating is more even.

[0036] 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 from 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. 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 is sprayed out from the water nozzle, so that the cooling water droplets fall evenly around the welding head, cooling the welding head during work, automatically cooling the welding head, and extending the service life of the welding head. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of an automated precision welding device for terminal blocks according to the present invention;

[0038] Figure 2 This is a schematic diagram of the specific structure of the tooling slot of the present invention;

[0039] Figure 3 Schematic diagram of the specific structure of the bidirectional screw rod of the present invention;

[0040] Figure 4 Schematic diagram of the upper end surface structure of the L-shaped support of the present invention;

[0041] Figure 5 Schematic diagram of the transmission structure of the L-shaped support of the present invention;

[0042] Figure 6 Schematic diagram of the internal structure of the wire feeder and guide seat of the present invention;

[0043] Figure 7 This is a schematic diagram of the movement path of the tin wire of the present invention;

[0044] Figure 8 Schematic diagram of the connection between the first bevel gear and the second bevel gear of the present invention;

[0045] Figure 9 Schematic diagram of the external structure of the ointment applicator of the present invention;

[0046] Figure 10 Schematic diagram of the internal structure of the ointment applicator of the present invention;

[0047] Figure 11 Schematic diagram of the installation position of the water sprinkler in the second embodiment of the present invention;

[0048] Figure 12 This is a schematic diagram of the installation position of the medium-pressure column in Example 2 of the present invention;

[0049] Figure 13 This is a schematic diagram of the external connection of the water-cooled radiator of the present invention;

[0050] Figure 14 It is a cross-sectional view of the water-cooling radiator of the present invention.

[0051] 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 shaft;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. Bristles; 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. Axle; 87. Fourth bearing seat. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example 1

[0053] like Figure 1-10 As shown, this embodiment provides an automated precision welding equipment for terminal blocks, including a welding table 1. A mounting frame 2 is provided at the upper end of the welding table 1, which serves as an installation support. 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. The lower end of the lifting rod 4 is connected to a welding head 5. A tooling groove 6 is provided on the upper end surface of the welding table 1 and below the welding head 5.

[0054] Among them, the inside of the tooling slot 6 is placed with a junction box 81, and the front end surface of the junction box 81 includes several groups of junction metal sheets 82. Each group of junction metal sheets 82 contacts the copper wire end of the wire 8. The junction metal sheets 82 and the wire 8 are closely arranged, such as Figure 1 and 2 shown.

[0055] 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 card slot that acts on the cable 7 and plays the role of limiting support. Figure 1 and 2 shown.

[0056] Furthermore, a bidirectional screw rod 10 is rotatably provided 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.

[0057] 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 movable seat 14 is installed on each group of forward spiral patterns 12 and reverse spiral patterns 13. A screw nut sleeve 15 acting on the forward spiral patterns 12 or the reverse spiral patterns 13 is installed inside each group of movable seats 14, and a screw nut sleeve 15 is provided inside the screw nut sleeve 15 for spiral motion, such as Figure 3 shown.

[0058] In this embodiment, the upper end of the movable seat 14 and the lower end of the L-shaped splint 16 are welded together, and each two groups of L-shaped splints 16 face each other to form a clamping unit. The bottom of the tooling slot 6 is provided with a guide slot 83 on both sides of each group of wires 8. Each group of guide slots 83 is vertically penetrated by an L-shaped splint 16. The L-shaped splint 16 moves linearly in the guide slot 83. The guide slot 83 plays a role in limiting the guide. The inner side of the L-shaped splint 16 is provided with a curved clamping slot 17 that acts on the wire 8. Figure 2 and 3 shown.

[0059] 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. The first servo motor 22 is horizontally arranged inside the welding table 1, as shown in FIG. Figure 3 shown.

[0060] 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 movement of the L-shaped support 30. 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 the role of limit guide and improving the stability of the cylinder drive. Figure 1 and 4 shown.

[0061] Among them, the L-shaped support 30 is located above the welding table 1, and the lower end of the L-shaped support 30 is welded with a cylinder rod 32. The cylinder rod 32 extends upward from the inside of the cylinder 31. 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.

[0062] Furthermore, a tin feeding cylinder 34 is installed on the inner side of the L-shaped support 30 through a rotating bracket 33. 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 the guide seat 35 in sequence. The movement of the tin wire 38 causes the guide wheels in contact with it to rotate, playing a role of guiding and limiting. Figure 4 、 6 and 7.

[0063] The lower ends of the first guide wheel 36 and the second guide wheel 37 are both mounted with axles 86. The lower ends of the two sets of axles 86 are fixed through the fourth bearing seat 87 and the bottom of the guide seat 35. The axles 86 rotate around the fourth bearing seat 87. Figure 7 shown.

[0064] 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 feed seat 40. Figure 4 shown.

[0065] Specifically, a No. 1 rotating rod 41 and a No. 2 rotating rod 42 are 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.

[0066] Among them, the tin wire 38 contacts the wheel surface 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.

[0067] 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 (they 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. The second servo motor 48 is set through the upper end surface of the wire feeding seat 40, as shown in FIG. Figure 6 and 7 shown.

[0068] Furthermore, a wire storage tube 54 is provided in the middle position on the left side of the wire feeding seat 40, and the tin wire 38 is moved in the wire storage tube 54. Figure 4 shown.

[0069] 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 interior of the wire storage tube 54, as shown in FIG. Figure 4 and 5 shown.

[0070] In this embodiment, a rotating shaft 61 is rotatably provided in the middle of the ointment applicator 60. 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 on the middle of the rotating shaft 61. 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. Figure 9 and 10 shown.

[0071] In this embodiment, a paste plate 67 is movably mounted on the outer side of the paste applicator 60. The bottom of the paste plate 67 is arranged in the paste applicator 60 by a flip roller 68. The flip roller 68 rotates to open the paste plate 67. 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). Several groups of bristles 66 come into contact with the rosin paste during the movement (the length of the bristles 66 is 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. Figure 9 and 10 shown.

[0072] 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 one side of the first bevel gear 49 is meshed with a second bevel gear 51, and 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.

[0073] Among them, the 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 feed seat 40, which plays a role of connection and fixation. 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.

[0074] The left side of the wire feeder 40 is provided with an opening 85 for the chain 55 to pass through. Figure 6 shown.

[0075] Furthermore, an annular limiting sleeve 84 is installed at the end of the wire storage tube 54 to act on the tin wire 38. 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.

[0076] When this 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. 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. 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 use their respective curved clamping grooves 17 to clamp the wires 8 together. 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.

[0077] At this time, the second servo motor 48 is started, driving 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 and second pressing wheels 44 and 45 act on the tin wire 38 at the same time during the circular motion, and the friction force drives the tin wire 38 to move linearly to the left (at the same time, the tin wire 38 will cause the tin feeding cylinder 34 to continuously output the wire through the traction relationship, and the tin wire 38 will pass 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 limit and extends outward, and moves to the position between the welding head 5 and the wiring metal piece 82. At this time, the lifting rod 4 drives the welding head 5 to descend. After contacting the tin wire 38, the cylinder 31 is started, causing the cylinder rod 32 to retract and drive the entire wire feeding structure to descend. In this way, the tin wire 38 and the welding head 5 maintain the same speed and descend together, and land in the area of the wiring metal piece 82 and the copper wire head, and the two are welded.

[0078] As the No. 1 rotating rod 41 rotates, it causes the first bevel gear 49 to rotate accordingly, and through the change of direction of engagement with the second bevel gear 51, the large sprocket 53 coaxial with the second bevel gear 51 moves synchronously. The large sprocket 53 uses the chain 55 to drive the rotating shaft 61 on the small sprocket 63 to rotate at high speed, causing the turntable 64 to make a circular motion inside the paste applicator 60. Several 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 board 67, and then allowing the bristles 66 carrying the rosin paste to contact the tin wire 38 that is slowly moving in a straight line in the wire storage tube 54 during the downward movement, wiping the rosin paste onto the surface of the tin wire 38, thereby achieving the effect of automatic coating. Example 2

[0079] 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 overheat locally. In order to solve the above problems, a water-cooled radiator 9 is provided inside the welding table 1 and directly below the wire storage tube 54. Figure 11-14 shown.

[0080] 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. Figure 13 and 14 shown.

[0081] 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 inside 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 the 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.

[0082] 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. Figure 13 and 14 shown.

[0083] 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 is connected between the pressure plug 96 and the top of the water-cooling cylinder 91 and is sleeved on the outside of the pressure column 94. After being compressed, the spring 97 has a reset elastic force, driving the pressure column 94 to return to its position.

[0084] In this embodiment, a set of second one-way valves 99 and two sets of first one-way valves 98 are installed on the cavity wall near the bottom of the inner cavity 92. The control directions of the second one-way valves 99 and the first one-way valves 98 are opposite (both are elastic control valves).

[0085] The outer sides of the two sets of first one-way valves 98 are connected to a flow pipe 70, which extends 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 upward and has the function of refining the cooling water into droplets. Figure 11-13 shown.

[0086] Among them, the outer side of the second one-way valve 99 is connected to the water inlet pipe 73, the upper end of the water inlet pipe 73 is connected to the cooling water tank 72, the interior of the cooling water tank 72 stores cooling water, and the cooling water tank 72 is fixed to the upper end surface of the welding table 1 on the side of the wire storage tube 54, as shown in FIG. Figure 11-13 shown.

[0087] Furthermore, a cover is provided at the upper end of the cooling water tank 72 .

[0088] When this embodiment is in use, when the cylinder rod 32 is retracted and drives the entire wire feeding structure to descend, the wire storage tube 54 descends accordingly, and the lower end of the wire storage tube 54 contacts the arc head 95 extending out from the upper end face 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 out 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.

[0089] After that, the wire storage tube 54 returns to its original position, and the pressure column 94 and the pressure plug 96 return to their original position 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, causing the second one-way valve 99 to open. 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.

[0090] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0091] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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), and 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 end of the wire (8), the wire (8) is located in the tooling slot (6), and a plurality of groups of the wires (8) are diverged outward from the cable (7), and a guide groove (83) is provided at the bottom of the tooling slot (6) and on both sides of each group of wires (8), and an L-shaped clamping plate (16) is vertically provided in each group of the guide grooves (83), and a curved clamping groove (17) is provided on the inner side surface of the L-shaped clamping plate (16) for acting on the wire (8); 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 movement of the L-shaped support (30), the L-shaped support (30) is located above the welding table (1), and the lower end of the L-shaped support (30) is welded with a cylinder rod (32), 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 inner side surface of the L-shaped support (30) is provided with a tin feeding cylinder (34) through a rotating bracket (33), and a tin wire (38) is wound on the tin feeding cylinder (34), and the tin wire (38) extends toward the inside of the guide seat (35), and the guide seat (35) is riveted to the upper end surface of the L-shaped support (30), and a first guide wheel (36) and a second guide wheel (37) acting on the tin wire (38) are sequentially installed in the guide seat (35), and 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), and 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 tube of the wire storage tube (54); The upper end surface of the wire storage tube (54) is provided with an ointment applicator (60), and a rotating shaft (61) is rotatably provided in the middle position of the interior 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), and a turntable (64) is sleeved on the middle part of the rotating shaft (61), and brush heads (65) are evenly installed on the outer periphery of the turntable (64), and each group of the brush heads (65) is evenly distributed with a plurality of groups of bristles (66), and a paste plate (67) is movably provided on the outer side surface of the ointment applicator (60), and the bottom of the paste plate (67) is provided in the ointment applicator (60) by a turning roller (68), and the inner surface of the paste plate (67) is coated with a layer of rosin paste, and the plurality of groups of bristles (66) are in contact with the rosin paste during the movement, and the bristles (66) carrying the rosin paste enter the tube of the wire storage tube (54) during the downward movement; One end of the rotating shaft (61) extends out of the paste applicator (60) and is sleeved with a small sprocket (63). A first rotating rod (41) and a second rotating rod (42) are vertically installed inside the wire feeding seat (40). The lower ends of the first rotating rod (41) and the second rotating rod (42) are fixed through the second bearing seat (43) and the bottom of the wire feeding seat (40). The upper end of the first rotating rod (41) is sleeved with a first bevel gear (49). One side of the first bevel gear (49) is meshed with the A second bevel gear (51) is provided, and 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). The 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), and the large sprocket (53) and the small sprocket (63) are connected and transmitted by a chain (55).

2. The automatic precision welding equipment for terminal blocks according to claim 1, characterized in that: 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 a first bearing seat (11) and the inner wall of the welding table (1). Several groups of forward spiral patterns (12) and reverse spiral patterns (13) are symmetrically distributed on the bidirectional screw rod (10). A movable seat (14) is installed on each group of the forward spiral patterns (12) and reverse spiral patterns (13). A screw nut sleeve (15) acting on the forward spiral patterns (12) or the reverse spiral patterns (13) is installed inside each group of the movable seats (14). 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, characterized in that: 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 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: The first rotating rod (41) is sleeved with a first pressing wheel (44) at a lower position, and the second rotating rod (42) is sleeved with a second pressing wheel (45) at a lower position. The gap between the first pressing wheel (44) and the second pressing wheel (45) is for the tin wire (38) to pass through. The first rotating rod (41) is sleeved with a first gear (46) above the first pressing wheel (44), and the second rotating rod (42) is sleeved with a second gear (47) above the second pressing wheel (45). The first gear (46) and the second gear (47) are meshed with each other. The top of the second rotating rod (42) is connected to a second servo motor (48) through a coupling. The second servo motor (48) is set 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-cooled radiator (9) is provided inside the welding table (1) and directly below the wire storage tube (54). The water-cooled radiator (9) comprises a water-cooled cylinder (91), an inner cavity (92), a guide hole (93), a pressure column (94) and an arc head (95). The water-cooled cylinder (91) is fixed inside the welding table (1). An inner cavity (92) is provided at the middle position inside the water-cooled cylinder (91). A guide hole (93) connected to the inner cavity (92) is provided at the top center position of the water-cooled cylinder (91). The guide hole (93) is for the pressure column (94) to pass upward. An arc head (95) is provided at the upper end of the pressure column (94). 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 includes 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-cooling 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 near the bottom of the inner cavity (92); 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) extend upward from the upper end surface of the welding table (1), and a water nozzle (71) acting on the welding head (5) is installed on the top of the flow pipe (70). 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). Cooling water is stored in the cooling water tank (72), and the cooling water tank (72) is fixed to the upper end surface of the welding table (1) on the side close to the wire storage tube (54).

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