Automatic welding equipment for moving contact assembly of circuit breaker

Abstract

The present invention discloses an automatic welding device for a moving contact assembly for a circuit breaker. The key points of the technical solution include a machine platform, a dividing plate and a mold assembly fixed on the dividing plate are provided on the machine platform, and processing stations corresponding to the mold assembly are provided on the circumference of the dividing plate; the dividing plate includes a first dividing plate for conveying coils and terminal blocks and a second dividing plate for conveying coil components and moving contacts, coil welding seats are distributed on the first dividing plate, and finished product welding seats are provided on the second dividing plate; the machine also includes a transfer mechanism arranged between the first dividing plate and the second dividing plate, and the transfer mechanism is used to convey the coil components to the finished product welding seats; the above structure can realize automatic assembly and welding of the moving contact assembly, thereby improving the quality and processing efficiency of product production, and at the same time, can eliminate products with poor processing through the detection station, reducing subsequent selection.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic welding equipment, and in particular to an automatic welding equipment for a moving contact of a circuit breaker. Background Art

[0002] A miniature circuit breaker is a mechanical switch that can connect, carry, and disconnect current under normal circuit conditions, and can also connect, carry, and disconnect current for a certain period of time under specified abnormal circuit conditions. The moving contact assembly is an indispensable part of the circuit breaker. The existing moving contact assembly includes a moving contact 001, a wire 002, a coil 003, and a terminal block 004. The terminal block is welded to the coil to form the coil component, and the wire is welded to the moving contact to complete the connection.

[0003] Among them, the existing equipment can realize the connection of the moving contact, the wire and the coil, but due to the different relative position relationship between the terminal block 004 and the coil during welding, it is difficult to realize automated assembly and welding, so the existing coil components are assembled and welded manually, which greatly reduces the production efficiency; and because the welding time is controlled manually, the quality of the welding at the connection cannot be guaranteed, which easily causes cold welding or leaking welding, affecting the quality of the product; therefore, there is a need for an automated welding equipment that can realize the automated production of coil components. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an automatic welding device for a moving contact assembly for a circuit breaker, which can realize the automatic assembly and welding of coil components, thereby improving production efficiency and product welding quality.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an automatic welding device for a moving contact assembly for a circuit breaker, comprising a machine platform, characterized in that a first indexing plate and a coil welding seat fixed on the first indexing plate are provided on the machine platform, and a processing station corresponding to the coil welding seat is provided on the peripheral side of the first indexing plate; the coil welding seat comprises a mounting seat fixed on the first indexing plate, a coil support groove and a terminal block placement groove are provided on the mounting seat, a support column vertically provided on the coil support groove for plugging and matching with the middle part of the coil, and a coil positioning groove matching with one end of the coil is provided on the coil support groove; a fixing column plugging and matching with the terminal block is provided on the terminal block placement groove; the depth of the coil support groove is less than the depth of the terminal block placement groove, and is used to ensure that there is a gap between the welding portion of the coil and the welding surface of the terminal block when the coil and the terminal block are not welded.

[0006] The present invention is further configured such that the processing stations include a terminal block unloading station, a coil unloading station, a spot welding station for welding the coil and the terminal block, and a waiting-for-transportation station, which are sequentially arranged along the rotation direction of the first dividing plate; and further includes a detection station arranged between the spot welding station and the waiting-for-transportation station for detecting the welding effect of the coil and the terminal block, wherein the detection station includes a photoelectric sensor fixedly arranged on the first dividing plate, and the detection end of the photoelectric sensor corresponds to the gap height.

[0007] The present invention is further configured such that the spot welding station includes an upper welding head and a lower welding head slidably disposed above and below the coil welding seat, respectively; and further includes a through slot extending through the coil welding seat and matching the lower welding head; the upper welding head is used to press the welding portion of the coil toward the terminal block, and the lower welding head extends through the through slot to move the welding surface of the terminal block toward the coil;

[0008] It also includes a welding sheet mechanism arranged on the machine platform, which includes a guide head and a pair of conveying rollers. The pair of conveying rollers are used to convey the welding sheet to the gap between the welding part and the welding surface through the guide head.

[0009] The present invention is further configured to include a second dividing plate for welding the coil component and the moving contact, a finished welding seat is provided on the second dividing plate, and processing stations corresponding to the finished welding seat are provided on the circumference of the second dividing plate; and also includes a transfer mechanism arranged between the first dividing plate and the second dividing plate, and the transfer mechanism is used to deliver the coil component to the finished welding seat.

[0010] The present invention is further configured such that the processing stations include a moving contact unloading station arranged on one side along the rotation direction of the second dividing plate, a coil component unloading station corresponding to the transfer mechanism, a glue dispensing station, a wire unloading station, welding stations for welding the coil and the wire, and the wire and the moving contact respectively, and a discharge station; a sensor for detecting whether there is glue on the coil and the moving contact is provided between the glue dispensing station and the wire unloading station, and the sensor is electrically connected to the discharge station.

[0011] The present invention is further configured such that the finished welding seat includes a fixed seat fixedly arranged on the second dividing plate, and a positioning groove corresponding to the moving contact and a plug-in column cooperating with the coil are provided on the side of the fixed seat close to the processing station, and a fixing groove for placing the wire is provided between the plug-in column and the positioning groove.

[0012] The present invention is further configured such that a deviation correction station for correcting the position of the wire is provided between the wire blanking station and the welding station;

[0013] The correction station includes a connecting frame that slides up and down on the machine platform. The connecting frame is provided with a pair of correction claws corresponding to the plug-in column and the positioning slot respectively. The correction claws are located at both ends of the wire and are used to move the two ends of the wire toward the plug-in column or the positioning slot respectively.

[0014] The present invention is further configured such that the fixing seat is further provided with a positioning pressing block located above the fixing slot, the positioning pressing block is elastically arranged on the fixing seat, and a limiting slot matching the wire is provided on a side of the positioning pressing block facing the fixing slot.

[0015] The present invention is further configured such that the transfer mechanism includes a guide rail arranged between the coil component unloading station and the conveying station, a lifting cylinder is horizontally slidably arranged on the guide rail, a horizontally arranged rotating shaft is arranged on the output shaft of the lifting cylinder, a pneumatic clamp is arranged on the rotating shaft, and the pneumatic clamp is electrically connected to the detection station for clamping the coil component.

[0016] The present invention is further configured such that the terminal block unloading station, the coil unloading station, and the moving contact unloading station all include a vibration plate, the vibration plate is connected to a conveying track corresponding to the coil welding seat, a material picking port is provided on the conveying track, and a robot for delivering the material from the material picking port to the mold is provided between the conveying track and the mold.

[0017] In summary, the beneficial effects of the present invention are:

[0018] Compared with the existing technology, the present application can realize the automatic assembly and welding of the moving contact assembly through two dividing plates and processing stations arranged on the side of the dividing plate, thereby improving the efficiency of product production and the quality of the finished product; at the same time, through the setting of detection mechanisms and sensors, unqualified products can be screened, so that the pneumatic clamps or the robot arms of the discharging station can eliminate the unqualified products to avoid mixing of unqualified products with qualified products.

[0019] The coil supporting groove and the terminal block placement groove provided on the coil welding seat can ensure that there is a gap between the welding point of the coil and the terminal block after the coil and the terminal block are placed on the coil welding seat. The setting of the gap can enable the welding piece to smoothly enter between the welding point when the coil and the terminal block arrive at the spot welding station, thereby improving the quality of welding; at the same time, it can allow the terminal block and the coil to be welded and fixed, and after the coil is reset, the terminal block is separated from the terminal block placement groove, thereby testing whether there is a cold weld between the two, thereby ensuring the quality of welding; and the detection station can detect whether the terminal block and the coil are welded and fixed, thereby quickly eliminating unqualified products, thereby improving the qualified rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the moving contact assembly.

[0021] Figure 2 It is a top view of this embodiment.

[0022] Figure 3 It is a structural diagram of the first dividing plate.

[0023] Figure 4 This is a three-dimensional structural diagram of the coil welding seat.

[0024] Figure 5 It is a structural diagram of the spot welding station.

[0025] Figure 6 yes Figure 5 An enlarged schematic diagram of .

[0026] Figure 7 It is a three-dimensional structural diagram of the detection station.

[0027] Figure 8 It is a structural diagram of the second dividing plate.

[0028] Figure 9 This is a three-dimensional structural diagram of the finished welding seat.

[0029] Figure 10 It is a three-dimensional structural diagram of the correction station.

[0030] Figure 11 It is a three-dimensional structural diagram of the transfer mechanism.

[0031] Figure numerals: 001-moving contact; 002-conductor; 003-coil; 013-welding part; 004-terminal block; 014-welding surface; 1-machine; 2-first indexing plate; 21-terminal block unloading station; 22-coil unloading station; 23-spot welding station; 231-upper welding head; 232-lower welding head; 233-through slot; 234-welding piece mechanism; 235-guide head 236-conveying roller; 24-to-be-conveyed station; 25-detection station; 251-photoelectric sensor; 201-moving contact unloading station; 202-coil component unloading station; 203-glue dispensing station; 204-conductor unloading station; 205-welding station; 206-out Material station; 207-sensor; 3-second indexing plate; 41-coil welding seat; 411-mounting seat; 412-coil support slot; 413-terminal board placement slot; 414-support column; 415-fixed column; 416-gap; 417-coil positioning slot; 42-finished product welding seat; 421-fixed seat; 422-positioning slot; 423-plug-in column; 424-fixed slot; 425-positioning block; 426-limiting slot; 5-transfer mechanism; 51-guide rail; 52-lifting cylinder; 53-rotating shaft; 54-pneumatic clamp; 6-correction station; 61-connecting frame; 62-correction clamp; 7-vibration plate; 71-conveying track; 72-manipulator. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-11 As shown, this embodiment discloses an automatic welding device for a moving contact assembly of a circuit breaker, which is used for Figure 1 The moving contact assembly shown is automatically installed and welded, which reduces labor costs and improves product production efficiency and welding quality.

[0034] like Figure 2 As shown, the welding equipment includes a machine platform 1, on which a first indexing plate 2 and a second indexing plate 3 are provided. The first indexing plate is used to install a welding terminal block 004 and a coil 003, thereby forming a coil assembly.

[0035] like Figure 3-4 As shown, a terminal block unloading station 21, a coil unloading station 22, a spot welding station 23, a detection station 25 and a waiting station 24 are sequentially arranged along the rotation direction of the first dividing plate 2; the terminal block unloading station 21 and the coil unloading station 22 both include a vibration plate 7, a conveying track 71 and a manipulator 72; during production, first, the vibration plate with the terminal block 004 on the terminal block unloading station 21 first delivers the material of the terminal block to the feeding port at the end of the conveying track 71, and the feeding port is provided with a photoelectric sensor to detect whether the terminal block is in place, and then the sensor will drive the manipulator 72 to move, and the manipulator can realize translation, descent and rotation under the action of the cylinder and the motor, so that the terminal block 004 on the conveying track can be clamped and placed on the terminal block of the coil welding seat. 413 support surface, and at the same time, the holes on the terminal block are aligned with the support columns, thereby completing the placement of the terminal block; then the first dividing plate rotates, driving the coil welding seat with the terminal block to the coil unloading station. Similar to the terminal block unloading station, under the action of the manipulator, the coil located on the conveying track will be placed on the coil welding seat 41, and the coil will be supported by the action of the fixed column; at the same time, the mounting seat 411 also has a limiting groove that matches the bottom surface of the coil, so that the welding part 013 of the coil can correspond to the welding surface 014 of the terminal block; in this process, detection sensors adjacent to the terminal block unloading station and the coil unloading station are provided, which can detect the terminal block and coil placed on the mounting seat 411 to ensure that the materials are placed in place.

[0036] like Figure 5-6As shown, the first dividing plate continues to rotate, driving the mold to rotate to the spot welding station. At this time, due to the action of the terminal board placement groove 413 and the coil support groove 412, there is a gap 416 between the welding part 013 and the welding surface 014 on the terminal board on the coil welding seat 41. The guide head 235 on the welding piece mechanism 234 corresponds to the gap. The welding piece is released from the coil disk under the action of the conveying roller 236 and is sent to between the welding part and the welding surface 014 through the guide head. Then the upper welding head 231 and the lower welding head 232 located above and below the coil welding seat 41 will move toward each other, thereby squeezing the coil and the terminal board together and completing the welding action, and the welding piece will break at the same time; while the upper welding head 231 squeezes the coil, the coil will be compressed downward, so that it can complete the contact with the terminal board.

[0037] like Figure 7 As shown, the coil and terminal block that have completed the welding action will arrive at the detection station 25. The detection station 25 includes a photoelectric sensor. The detection end of the photoelectric sensor is located in the gap between the welding part 013 and the welding surface 014. If the coil and the terminal block can complete the welding, the coil will reset and drive the terminal block to move upward, so that there is no gap between the two. At this time, the photoelectric sensor determines that it is qualified; conversely, when the photoelectric sensor detects the existence of a gap, the product welding is unqualified.

[0038] Finally, qualified products will be sent to the waiting station 24, and then sent to the second transfer plate through the transfer mechanism 5; unqualified products will be sent to the waste box by the transfer mechanism; Figure 11 As shown, the transfer mechanism 5 includes a guide rail arranged between the first dividing plate and the second dividing plate 3, and a lifting cylinder 52 is slidably connected to the guide rail 51. The lifting cylinder 52 can slide left and right along the guide rail 51 through a motor; a rotating shaft 53 rotated by a motor is provided on the output shaft of the lifting cylinder 52, and a pneumatic clamp 54 is connected to the rotating shaft 53, so that the material can be clamped.

[0039] like Figure 8 As shown, the second dividing plate 3 is provided with a moving contact unloading station 201 arranged along its rotation direction, a coil component unloading station corresponding to the transfer mechanism 5, a glue dispensing station 203, a wire unloading station 204, a welding station 205 for welding the coil 003 and the wire 002, the wire 002 and the moving contact 001 respectively, and a discharge station 206.

[0040] like Figure 9As shown, the finished welding seat 42 includes a fixed seat 421 fixed on the second dividing plate 3, and a positioning groove 422 corresponding to the moving contact 001 and a plug-in column 423 cooperating with the coil 003 are provided on the side of the fixed seat 421 close to the processing station, and a fixing groove 424 for placing the wire 002 is provided between the plug-in column 423 and the positioning groove 422.

[0041] like Figure 8 As shown, during processing, first, the robot at the moving contact unloading station 201 will clamp the moving contact on the conveying track and place it on the positioning groove 422 of the fixed seat 421, and then, under the action of the second indexing plate, it will first rotate to the detection position between the moving contact unloading station 201 and the coil component unloading station 202, and detect whether the material is in place under the detection of the photoelectric sensor; then it will be sent to the coil component unloading station 202; the coil component assembled on the first indexing plate will be placed on the fixed seat 421 under the drive of the pneumatic clamp of the transfer mechanism. , and the coil will be connected to the plug-in column 423; then continue to rotate, after checking whether the coil is placed in place, it rotates to the glue dispensing station 203, and the glue dispensing station 203 is provided with two glue dispensing heads, which correspond to the welding points of the coil component and the welding points of the moving contact, and perform glue dispensing, and then continue to rotate, and after the glue dispensing position is also checked, it is sent to the wire unloading station 204. The structural principle of the wire unloading station is similar to the wire feeding mechanism described in the movable contact welding machine for circuit breaker disclosed in Patent No. (CN109872924A), so it will not be described in detail;

[0042] The two ends of the wire are placed in the fixed groove 424 at the wire feeding station and then sent to the deviation correction station 6. Figure 10 As shown, the correction jaws 62 at the correction station 6 are pneumatic clamps. The jaws will be located on both sides of the end of the wire 002 under the action of the cylinder; then the correction jaws pneumatically clamp the wire, thereby clamping the two ends of the wire to the connection with the terminal board or coil, completing the correction of the wire and preventing the wire from bending and affecting subsequent welding.

[0043] Afterwards, if Figure 8 As shown, there are two welding stations behind the deviation correction station, which can respectively weld the coil and the wire, and the wire and the moving contact. After the welding is completed, the qualified products will be taken out by the robot at the discharge station 206 and placed in a box.

[0044] Through the above structure, the processing and welding of the moving contact assembly are completed, thereby improving the quality of the product and the production efficiency.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic welding device for a moving contact assembly for a circuit breaker, comprising a machine (1), characterized in that: The machine (1) is provided with a first indexing plate (2) and a coil welding seat (41) fixed on the first indexing plate (2), and a processing station corresponding to the coil welding seat (41) is provided on the peripheral side of the first indexing plate (2); the coil welding seat (41) includes a mounting seat (411) fixed on the first indexing plate (2), the mounting seat (411) is provided with a coil support groove (412) and a terminal block placement groove (413), the coil support groove (412) is vertically provided with a support column (414) plug-fitted with the middle part of the coil (003), and the coil support groove (412) is provided with a coil positioning groove (413) matching one end of the coil (003). 17); a fixing column (415) that is plugged into the terminal board (014) is provided on the terminal board placement groove (413); the depth of the coil support groove (412) is less than the depth of the terminal board placement groove (413), and is used to ensure that a gap (416) exists between the welding portion (013) of the coil (003) and the welding surface of the terminal board (014) when the coil (003) and the terminal board (014) are not welded. The invention also includes a second indexing plate (3) for welding the coil component and the moving contact (001), a finished product welding seat (42) is provided on the second indexing plate (3), and a processing station corresponding to the finished product welding seat (42) is provided on the circumference of the second indexing plate (3); It also includes a transfer mechanism (5) arranged between the first indexing plate (2) and the second indexing plate (3), the transfer mechanism (5) is used to transfer the coil component to the finished product welding seat (42), and the processing stations include a moving contact unloading station (201) arranged along the rotation direction of the second indexing plate (3), a coil component unloading station (202) corresponding to the transfer mechanism (5), a glue dispensing station (203), a wire unloading station (204), a welding station (205) for respectively welding the coil (003) and the wire (002), and the wire (002) and the moving contact (001), and a discharge station (206); A sensor (207) for detecting whether there is glue on the coil (003) and the moving contact (001) is provided between the glue dispensing station (203) and the wire unloading station (204), and the sensor (207) is electrically connected to the unloading station. The finished product welding seat (42) includes a fixed seat (421) fixed on the second indexing plate (3), and a positioning groove (422) corresponding to the moving contact (001) and a plug-in column (423) matched with the coil (003) are provided on the side of the fixed seat (421) close to the processing station. A fixing groove (424) for placing the wire (002) is provided between the plug-in column (423) and the positioning groove (422). A correction station (6) for correcting the position of the wire (002) is provided between the wire unloading station (204) and the welding station (205); The deflection correction station (6) includes a connecting frame (61) that is slidably arranged on the machine platform (1) up and down, and a pair of deflection correction claws (62) corresponding to the plug-in column (423) and the positioning groove (422) are provided on the connecting frame (61). The deflection correction claws (62) are located at both ends of the wire (002) and are used to move the two ends of the wire (002) toward the plug-in column (423) or the positioning groove (422).

2. The automatic welding equipment for movable contact assembly of circuit breaker according to claim 1, characterized in that: The processing stations include a terminal board blanking station (21), a coil blanking station (22), a spot welding station (23) for welding the coil (003) and the terminal board (014), and a waiting station (24) arranged in sequence along the rotation direction of the first indexing plate (2); and also include a detection station (25) arranged between the spot welding station (23) and the waiting station (24) for detecting the welding effect of the coil (003) and the terminal board (014), the detection station (25) including a photoelectric sensor (207) fixedly arranged on the first indexing plate (2), the detection end of the photoelectric sensor (207) corresponding to the height of the gap (416).

3. The automatic welding equipment for movable contact assembly of circuit breaker according to claim 2, characterized in that: The spot welding station (23) includes an upper welding head (231) and a lower welding head (232) respectively slidably arranged above and below the coil welding seat (41); and also includes a through slot (233) penetrating the coil welding seat (41) and matching the lower welding head (232); the upper welding head (231) is used to press the welding portion (013) of the coil (003) toward the terminal board (014), and the lower welding head (232) penetrates the through slot (233) and is used to move the welding surface of the terminal board (014) toward the coil (003); The machine also includes a welding sheet mechanism (234) disposed on the machine platform (1), wherein the welding sheet mechanism (234) includes a guide head (235) and a pair of conveying rollers (236), wherein the pair of conveying rollers (236) is used to convey the welding sheet to the gap (416) between the welding portion (013) and the welding surface through the guide head (235).

4. The automatic welding equipment for movable contact assembly of circuit breaker according to claim 1, characterized in that: The fixing seat (421) is further provided with a positioning pressing block (425) located above the fixing groove (424). The positioning pressing block (425) is elastically arranged on the fixing seat (421), and a limiting groove (426) matching the wire (002) is provided on a side of the positioning pressing block (425) facing the fixing groove (424).

5. The automatic welding equipment for movable contact assembly of circuit breaker according to claim 1, characterized in that: The transfer mechanism (5) includes a guide rail (51) arranged between a coil component unloading station (202) and a station to be transported (24); a lifting cylinder (52) is horizontally slidably arranged on the guide rail (51); a horizontally arranged rotating shaft (53) is arranged on the output shaft of the lifting cylinder (52); a pneumatic clamp (54) is arranged on the rotating shaft (53); the pneumatic clamp (54) is electrically connected to the detection station and is used to clamp the coil component.

6. The automatic welding equipment for movable contact assembly of circuit breaker according to claim 2, characterized in that: The terminal block blanking station (21), the coil blanking station (22), and the movable contact blanking station (201) all include a vibration plate (7), the vibration plate (7) is connected to a conveying track (71) corresponding to the coil welding seat (41), a material taking port is provided on the conveying track (71), and a manipulator (72) for delivering materials from the material taking port to the mold is provided between the conveying track (71) and the mold.

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