Automatic spot welding machine for carbon brush

Abstract

The utility model relates to the technical field of carbon brush welding, in particular to a carbon brush automatic spot welding machine which comprises a rack, and a feeding device, a welding clamping device and a spot welding device are arranged on the rack. The welding clamping device is provided with a lifting driver, two interval adjusting mechanisms are oppositely arranged on the lifting driver, and clamping conveying units are arranged on the interval adjusting mechanisms. The spot welding device comprises a power supply, a spot welding clamping mechanism and a spot welding mechanism; through cooperative work of the feeding device, the welding clamping device and the spot welding device, the automatic process of spot welding of the carbon brush is achieved, manual intervention is reduced, and the production efficiency is improved; the multiple clamping and conveying units, the multiple clamping units and the multiple spot welding units are arranged in a one-to-one correspondence mode, the multiple carbon brushes can be clamped, conveyed and welded at the same time, and the working efficiency is further improved; the distance between the carbon brushes can be adjusted by arranging the distance adjusting mechanism, the spot welding clamping mechanism and the spot welding mechanism can adapt to the carbon brushes of different sizes and shapes, and diversified production requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon brush welding technical field especially relates to a carbon brush automatic spot welding machine. BACKGROUND

[0002] Carbon brush, also called brush, is a kind of component widely used in electrical equipment such as motor, and is in close contact with the commutator or slip ring of motor, which can realize the current conduction between the internal circuit of motor and external circuit. The carbon brush is generally connected with a wire to realize the conduction of current. In order to ensure the quality of carbon brush, the carbon brush wire needs to be welded. Poor welding quality may lead to unstable connection between wire and carbon brush, increased contact resistance, and further cause heating, sparking and other problems. Therefore, reliable welding process is crucial to ensure the normal work of carbon brush and improve the stability and reliability of electrical equipment.

[0003] In the existing carbon brush spot welding technology, there are mainly the following deficiencies: first, the degree of automation is low, and most of the operations depend on manual completion. Manual feeding, manual adjustment of carbon brush spacing and manual control of welding process not only have low efficiency, but also are easily affected by human factors, leading to uneven product quality and difficulty in ensuring the consistency and stability of welding. Second, the traditional equipment can only process carbon brush one by one, and cannot realize the clamping, conveying and welding operation of multiple carbon brushes at the same time, which is difficult to meet the demand of large-scale production. SUMMARY

[0004] To solve the above problems, the present application provides a kind of carbon brush automatic spot welding machine, including frame, the frame is equipped with feeding device, welding clamping device, spot welding device;

[0005] The welding clamping device is provided with a lifting drive, and two spacing adjustment mechanisms are oppositely arranged on the lifting drive, and a clamping and conveying unit is arranged on the spacing adjustment mechanism.

[0006] The spot welding device includes a power supply, a spot welding clamping mechanism and a spot welding mechanism.

[0007] The spot welding clamping mechanism includes a plurality of clamping units, and each clamping unit is composed of oppositely arranged clamping blocks.

[0008] The spot welding mechanism includes a plurality of spot welding units, and each spot welding unit is composed of a pair of electrodes and a spot welding moving drive.

[0009] The clamping and conveying unit, the clamping unit and the spot welding unit are one-to-one corresponding.

[0010] In one of the embodiments, the feeding device comprises a feeding support frame arranged on the frame, a feeding linear module arranged on the feeding support frame, a multi-degree-of-freedom mechanical arm and an end effector arranged on the feeding linear module, and the end effector is a clamping jaw.

[0011] In one of the embodiments, the distance adjusting mechanism comprises a plurality of oppositely arranged distance adjusting seats connected by connecting rods between adjacent distance adjusting seats, and a distance adjusting cylinder arranged on one side of the distance adjusting seat; the clamping and conveying unit comprises a first clamping finger part and a second clamping finger part arranged on the distance adjusting seat, and a discharging box arranged below the clamping and conveying unit.

[0012] In one of the embodiments, the first clamping finger part comprises a first clamping finger and a first clamping finger driver, and the first clamping finger is mounted on the first clamping finger driver; the second clamping finger part comprises a second clamping finger and a second clamping finger driver, and the second clamping finger is mounted on the second clamping finger driver, and the first clamping finger and the second clamping finger are oppositely arranged.

[0013] In one of the embodiments, the first clamping finger comprises two clamping finger plates, a locking groove is arranged between the two clamping finger plates, a clamping guide groove is arranged on the two clamping finger plates, a locking plate is arranged on the second clamping finger, clamping guide plates are arranged on the upper and lower sides of the locking plate, and the interfacing surfaces of the clamping guide groove and the clamping guide plate are triangular.

[0014] In one of the embodiments, the distance adjusting mechanism further comprises a distance adjusting guide groove, the distance adjusting seat has a "convex" structure, the distance adjusting seat is slidably mounted in the distance adjusting guide groove, a cylinder fixing plate is arranged on one side of the distance adjusting guide groove, and the distance adjusting cylinder is fixedly mounted on the cylinder fixing plate.

[0015] In one of the embodiments, the spot welding clamping mechanism comprises a clamping support plate, clamping drivers are arranged on the two sides of the clamping support plate respectively, output ends of the clamping drivers are connected with pull rods, clamping blocks are arranged on the pull rods in a spaced manner, the clamping blocks on the two pull rods are distributed in a staggered manner to form a clamping unit, and ceramic blocks are arranged on the clamping blocks.

[0016] In one of the embodiments, the spot welding mechanism comprises a welding fixing frame, spot welding moving drivers are fixedly mounted on the two sides of the welding fixing frame, the spot welding moving drivers are connected with welding moving seats, welding fixing heads are arranged on the welding moving seats, and electrodes are fixedly mounted on the welding fixing heads.

[0017] In one embodiment, the welding fixing head is fixedly installed on the welding moving base, an insulation sleeve and an insulation gasket are arranged between the welding fixing head and the welding moving base, and a water inlet pipe joint and a water outlet pipe joint are arranged on the welding fixing head.

[0018] In one embodiment, the axial direction of the pull rod is perpendicular to the reciprocating movement direction of the electrode, the clamping unit is located between the spot welding units, a welding linear guide rail is arranged on the welding fixing frame, and the welding moving base is arranged on the sliding block of the welding linear guide rail.

[0019] The utility model discloses beneficial effect lies in:

[0020] The utility model discloses a kind of automatic spot welding machine of carbon brush, including rack, feeding device, welding clamping device, spot welding device are equipped on rack;Welding clamping device is equipped with lifting driver, two spacing adjustment mechanisms are oppositely arranged on lifting driver, spacing adjustment mechanism is equipped with clamping conveying unit;Spot welding device includes power supply, spot welding clamping mechanism and spot welding mechanism;In welding clamping device, lifting driver is fixed to rack, drives two oppositely arranged spacing adjustment mechanisms and clamping conveying unit to lift, clamping conveying unit adjusts the spacing of carbon brush and clamps carbon brush under the action of spacing adjustment mechanism.Spot welding device is composed of power supply, spot welding clamping mechanism and spot welding mechanism, three synergies, wherein clamping unit, spot welding unit and clamping conveying unit one-to-one correspond.Equipment operation, feeding device sends carbon brush to welding clamping device, clamping conveying unit clamps carbon brush, spacing adjustment mechanism adjusts spacing, lifting driver sends carbon brush to spot welding device;Spot welding clamping mechanism clamps carbon brush, welding clamping device resets, spot welding mechanism completes welding, spot welding clamping mechanism releases carbon brush, and completes carbon brush automatic spot welding operation.Through the collaborative work of setting feeding device, welding clamping device and spot welding device, the automation process of carbon brush spot welding is realized, manual intervention is reduced, and production efficiency is improved;Multiple clamping conveying units, clamping units and spot welding units are one-to-one correspondingly arranged, so that multiple carbon brushes can be clamped, conveyed and welded simultaneously, further improving work efficiency;Spacing adjustment mechanism can adjust the spacing between carbon brushes, spot welding clamping mechanism and spot welding mechanism can adapt to carbon brushes of different sizes and shapes, meet the diversified production needs. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is structure schematic diagram of the utility model;

[0022] Figure 2 It is front view of the utility model;

[0023] Figure 3 It is structure schematic of welding clamping device Figure 1 ;

[0024] Figure 4 Structure diagram of welding clamping device Figure 2 ;

[0025] Figure 5 Structure diagram of welding clamping device Figure 3 Enlarged view of A in the middle

[0026] Figure 6 Structure diagram of spot welding device Figure 1 ;

[0027] Figure 7 Structure diagram of spot welding device Figure 2 ;

[0028] Figure 8 Structure diagram of spot welding clamping mechanism

[0029] Figure 9 Structure diagram of spot welding mechanism

[0030] Figure 10 Structure diagram of spot welding clamping mechanism Figure 7 Enlarged view of B in the middle

[0031] Explanation of symbols in the figure:

[0032] 1. Frame

[0033] 2. Feeding device; 21. Feeding support frame; 22. Feeding linear module; 23. Mechanical arm; 24. End effector

[0034] 3. Welding clamping device

[0035] 31. Lifting driver

[0036] 32. Spacing adjustment mechanism; 321. Spacing adjustment seat; 322. Connecting rod; 323. Spacing adjustment cylinder

[0037] 33. Clamping and conveying unit

[0038] 331. First clamping finger part

[0039] 3311. First clamping finger; 33111. Clamping finger plate; 33112. Locking groove; 33113. Clamping finger guide groove

[0040] 3312. First clamping finger driver

[0041] 332. Second clamping finger part

[0042] 3321. Second clamping finger; 33211. Locking plate; 33212. Clamping finger guide plate

[0043] 3322. Second clamping finger driver

[0044] 324. Spacing adjustment guide groove

[0045] 325、cylinder fixing plate;

[0046] 34、outlet box;

[0047] 4、spot welding device;

[0048] 41、power supply;

[0049] 42、spot welding clamping mechanism;

[0050] 421、clamping unit;4211、clamping block;

[0051] 422、clamping support plate;423、clamping driver;424、pull rod;

[0052] 43、spot welding mechanism;

[0053] 431、spot welding unit;4311、electrode;4312、spot welding movement driver;

[0054] 432、welding fixing frame;

[0055] 433、welding movement base;

[0056] 434、welding fixed head;4341、water inlet connector;4342、water outlet connector;

[0057] 435、insulating sleeve;

[0058] 436、insulating gasket;

[0059] 437、welding linear guide rail. DETAILED DESCRIPTION

[0060] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0061] It should be noted that the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0062] As shown in Figure 1-4 , 6-9, an automatic spot welding machine for carbon brush, comprising a rack 1, wherein the rack 1 is provided with a feeding device 2, a welding clamping device 3, and a spot welding device 4.

[0063] The welding clamping device 3 is provided with a lifting driver 31, two spacing adjustment mechanisms 32 are oppositely arranged on the lifting driver 31, and a clamping conveying unit 33 is arranged on the spacing adjustment mechanism 32;

[0064] The spot welding device 4 comprises a power supply 41, a spot welding clamping mechanism 42 and a spot welding mechanism 43.

[0065] The spot welding clamping mechanism 42 comprises a plurality of clamping units 421, and each clamping unit 421 is composed of oppositely arranged clamping blocks 4211.

[0066] The spot welding mechanism 43 comprises a plurality of spot welding units 431, and each spot welding unit 431 is composed of a pair of electrodes 4311 and a spot welding moving driver 4312.

[0067] The clamping conveying unit 33 is arranged one by one corresponding to the clamping unit 421 and the spot welding unit 431.

[0068] Specifically, the rack 1 serves as the basic support structure of the entire device, and the feeding device 2, the welding clamping device 3 and the spot welding device 4 are sequentially and orderly distributed to ensure that the carbon brushes can be processed according to the predetermined process flow. The lifting driver 31 in the welding clamping device 3 is fixed on the rack 1, which drives the components connected thereto to move up and down. The two spacing adjustment mechanisms 32 are oppositely arranged on the lifting driver 31, the clamping conveying unit 33 is used to directly clamp the carbon brushes, and the spacing between the carbon brushes is adjusted under the action of the spacing adjustment mechanism 32. The spot welding device 4 is composed of a power supply 41, a spot welding clamping mechanism 42 and a spot welding mechanism 43. The power supply 41 provides the required electric energy for the spot welding operation, and the electrode 4311 of the spot welding mechanism 43 is connected to the power supply 41 through a copper belt and a wire to realize electric energy transmission. The spot welding clamping mechanism 42 and the spot welding mechanism 43 are closely matched, and the plurality of clamping units 421 of the spot welding clamping mechanism 42 and the plurality of spot welding units 431 of the spot welding mechanism 43 are arranged one-to-one, and also one-to-one with the clamping conveying unit 33, so as to ensure that each carbon brush can be accurately clamped and welded. When the device is running, the feeding device 2 starts to move the carbon brushes to be processed to the position of the welding clamping device 3, the clamping conveying unit 33 in the welding clamping device 3 acts to firmly clamp the carbon brushes, and the spacing adjustment mechanism 32 starts to work to move the clamping conveying unit 33 according to the predetermined welding process requirements, so as to keep the adjacent carbon brushes at a predetermined distance. The lifting driver 31 starts to lift the spacing adjustment mechanism 32 and the clamping conveying unit 33 thereon upwards, so as to accurately convey the carbon brushes to the working position of the spot welding device 4. The clamping units 421 of the spot welding clamping mechanism 42 act to tightly clamp and fix the carbon brushes by the oppositely arranged clamping blocks 4211, so as to prevent the carbon brushes from moving during the welding process, and the welding clamping device 3 is reset at this time. The two spot welding moving drivers 4312 of the spot welding mechanism 43 push the electrode 4311 to move to the position where the carbon brush wire needs to be welded, the power supply 41 provides electric energy for the electrode 4311, the metal part of the carbon brush wire is rapidly melted, so as to realize welding, fuse the wire into one, and after the spot welding is completed, the spot welding clamping mechanism 42 releases the carbon brushes, and the entire carbon brush automatic spot welding operation is completed. In this application, the cooperation of the feeding device 2, the welding clamping device 3 and the spot welding device 4 realizes the automatic process of the carbon brush spot welding, reduces the manual intervention, and improves the production efficiency; the one-to-one arrangement of the plurality of clamping conveying units 33, clamping units 421 and spot welding units 431 enables multiple carbon brushes to be clamped, conveyed and welded at the same time, further improving the work efficiency; the spacing adjustment mechanism 32 can adjust the spacing between the carbon brushes, and the spot welding clamping mechanism 42 and the spot welding mechanism 43 can adapt to carbon brushes of different sizes and shapes, meeting the diversified production needs.

[0069] As Figure 1 , 2As shown, the feeding device 2 includes a feeding support frame 21 mounted on the frame 1. A feeding linear module 22 is mounted on the feeding support frame 21. A multi-degree-of-freedom robotic arm 23 and an end effector 24 are mounted on the feeding linear module 22. The end effector 24 is a gripper.

[0070] Specifically, the feeding linear module 22 is fixed to the feeding support frame 21, enabling the multi-degree-of-freedom robotic arm 23 to move up and down along the feeding support frame 21, thereby adjusting the vertical position of the multi-degree-of-freedom robotic arm 23. The multi-degree-of-freedom robotic arm 23 is connected to the feeding linear module 22 and can move flexibly in multiple directions. Through the cooperation of the feeding linear module 22 and the multi-degree-of-freedom robotic arm 23, the position of the gripper 24 can be precisely controlled, ensuring that the gripper can accurately grasp the carbon brush and place it in the designated position, thus improving the accuracy of feeding.

[0071] like Figure 3 , 4 As shown, the spacing adjustment mechanism 32 includes several opposing spacing adjustment seats 321, which are connected by a connecting rod 322. A spacing adjustment cylinder 323 is provided on one side of each spacing adjustment seat 321. The clamping and conveying unit 33 includes a first clamping finger 331 and a second clamping finger 332 provided on the spacing adjustment seat 321. A discharge box 34 is provided below the clamping and conveying unit 33.

[0072] Specifically, the spacing adjustment seat 321 is connected by a movably mounted connecting rod 322, and adjacent connecting rods 322 are not on the same plane to avoid interference. A spacing adjustment cylinder 323 is provided on one side of the spacing adjustment seat 321 as a power source, which can drive the spacing adjustment seat 321 to reciprocate along the axial direction of the connecting rod 322, thereby adjusting the distance between adjacent spacing adjustment seats 321. The first clamping finger 331 and the second clamping finger 332 of the clamping and conveying unit 33 are provided on the spacing adjustment seat 321 for clamping carbon brushes, and a discharge box 34 is provided below it for collecting the carbon brushes after welding. The spacing adjustment cylinder 323 drives the spacing adjustment seat 321 to move, which can precisely adjust the carbon brush spacing to adapt to different welding process requirements.

[0073] like Figure 3 , 4 As shown, the first finger clamping portion 331 includes a first finger clamping 3311 and a first finger clamping driver 3312, with the first finger clamping 3311 mounted on the first finger clamping driver 3312; the second finger clamping portion 332 includes a second finger clamping 3321 and a second finger clamping driver 3322, with the second finger clamping 3321 mounted on the second finger clamping driver 3322, and the first finger clamping 3311 and the second finger clamping 3321 are disposed opposite to each other.

[0074] Specifically, the first clamp finger driver 3312 can drive the first clamp finger 3311 to act, and the second clamp finger driver 3322 can drive the second clamp finger 3321 to act. When the carbon brush needs to be clamped, the two drivers respectively drive the corresponding clamp fingers to move close to each other, thereby clamping the carbon brush; when the carbon brush needs to be released, the drivers drive the clamp fingers to move reversely. The first clamp finger 3311 and the second clamp finger 3321 are oppositely arranged and can symmetrically clamp the carbon brush from both sides, so that the carbon brush is uniformly stressed, which is beneficial to subsequent welding operation and improves the accuracy and efficiency of the production process.

[0075] As shown in Figure 5 , the first clamp finger 3311 includes two clamp finger plates 33111, a locking groove 33112 is arranged between the two clamp finger plates 33111, and a clamp guide groove 33113 is arranged on the two clamp finger plates 33111. The second clamp finger 3321 is provided with a locking plate 33211, and a clamp guide plate 33212 is arranged on the upper and lower sides of the locking plate 33211. The clamp guide groove 33113 and the clamp guide plate 33212 are triangularly butted.

[0076] Specifically, when the first clamp finger 3311 and the second clamp finger 3321 move close to each other under the driving of the first clamp finger driver 3312 and the second clamp finger driver 3322 to perform clamping action, the locking plate 33211 of the second clamp finger 3321 will be inserted into the locking groove 33112 of the first clamp finger 3311, and at the same time, the clamp guide plate 33212 and the clamp guide groove 33113 are butted with each other, which can realize precise cooperation.

[0077] As shown in Figure 3 , 4 , the spacing adjustment mechanism 32 is further provided with a spacing adjustment guide groove 324, the spacing adjustment seat 321 is in a "convex" structure, the spacing adjustment seat 321 is slidably installed in the spacing adjustment guide groove 324, a cylinder fixing plate 325 is arranged on one side of the spacing adjustment guide groove 324, and the spacing adjustment cylinder 323 is fixedly installed on the cylinder fixing plate 325.

[0078] Specifically, the spacing adjustment seat 321 in a "convex" structure is slidably installed in the spacing adjustment guide groove 324, and the spacing adjustment seat 321 can smoothly move along the spacing adjustment guide groove 324. The cylinder fixing plate 325 is arranged on one side of the spacing adjustment guide groove 324, the spacing adjustment cylinder 323 is fixedly installed on the cylinder fixing plate 325, and the spacing adjustment cylinder 323 can drive the spacing adjustment seat 321 to slide in the spacing adjustment guide groove 324. The spacing adjustment seat 321 in a "convex" structure cooperates with the spacing adjustment guide groove 324, which further enhances the stability during sliding, reduces shaking and deviation, and improves the adjustment accuracy.

[0079] As Figure 8 As shown, the spot welding clamping mechanism 42 comprises a clamping support plate 422, clamping drivers 423 are arranged on both sides of the clamping support plate 422 respectively, the output ends of the clamping drivers 423 are connected with pull rods 424, clamping blocks 4211 are arranged on the pull rods 424 at intervals, the clamping blocks 4211 on the two pull rods 424 are staggered to form clamping units 421, and ceramic blocks are arranged on the clamping blocks 4211.

[0080] Specifically, the output ends of the clamping drivers 423 are connected with the pull rods 424, so that the pull rods 424 can be driven to move. The clamping blocks 4211 are arranged on the pull rods 424 at intervals, and the clamping blocks 4211 on the two pull rods 424 are staggered to form the clamping units 421, so as to clamp the carbon brush. The clamping drivers 423 on both sides are symmetrically arranged, so that the two pull rods 424 can move synchronously and stably, ensuring the uniformity of the clamping force. The staggered clamping blocks 4211 can realize multi-point clamping of the carbon brush. The ceramic blocks on the clamping blocks 4211 have good insulation performance, which can effectively isolate the current and avoid short circuit.

[0081] As shown in the figure, Figure 9 The spot welding mechanism 43 comprises a welding fixing frame 432, spot welding moving drivers 4312 are fixedly installed on both sides of the welding fixing frame 432, the spot welding moving drivers 4312 are connected with welding moving seats 433, welding fixing heads 434 are arranged on the welding moving seats 433, and electrodes 4311 are fixedly installed on the welding fixing heads 434.

[0082] Specifically, the spot welding moving drivers 4312 are connected with the welding moving seats 433, so that the welding moving seats 433 can be driven to move, and the electrodes 4311 can be accurately moved to the welding position. The spot welding moving drivers 4312 are symmetrically installed on both sides, so that the electrodes 4311 can approach the carbon brush from both sides synchronously, ensuring that the welding pressure is uniformly distributed, avoiding the offset or virtual welding of the welding point caused by unilateral pressure, and improving the stability of the welding quality.

[0083] As shown in the figure, Figure 9 The welding fixing heads 434 are fixedly installed on the welding moving seats 433, insulating sleeves 435 and insulating gaskets 436 are arranged between the welding fixing heads 434 and the welding moving seats 433, water inlet connectors 4341 and water outlet connectors 4342 are arranged on the welding fixing heads 434.

[0084] Specifically, the insulating sleeve 435 and the insulating pad 436 are clamped between the contact surface of the welding fixed head 434 and the welding moving seat 433, which plays the role of isolating the two, the setting of the insulating sleeve 435 and the insulating pad 436 can effectively block the current conduction from the welding fixed head 434 to the welding moving seat 433, avoid the current shunt and the equipment short circuit, ensure the safe and stable operation of the spot welding equipment, and also improve the reliability of the welding process. The cooling circulation system composed of the water inlet joint 4341 and the water outlet joint 4342 can continuously take away heat when the electrode 4311 generates high temperature during welding, so that the electrode 4311 and the welding fixed head 434 can be maintained in a stable working temperature range, prolonging the service life of the equipment and ensuring the stability of the welding quality.

[0085] As shown in Figure 8 , 9 , 10, the pull rod 424 is arranged vertically to the reciprocating direction of the electrode 4311, the clamping unit 421 is located between the spot welding units 431, the welding fixed frame 432 is provided with a welding linear guide rail 437, and the welding moving seat 433 is arranged on the sliding block of the welding linear guide rail 437.

[0086] Specifically, when the spot welding mechanism works, because the pull rod 424 is arranged vertically to the reciprocating direction of the electrode 4311, and the clamping unit 421 is located between the spot welding units 431, when the clamping drive drives the pull rod 424 to move horizontally and clamps the carbon brush, the electrodes 4311 on the two sides of the vertical direction can be driven by the spot welding moving drive 4312 to advance to the middle carbon brush position synchronously for welding, so that the clamping and welding actions do not interfere with each other in space, the equipment structure is compact, and precise welding is realized.

[0087] The application discloses a kind of carbon brush automatic spot welder, including rack 1, be equipped with feeding device 2 on rack 1, welding clamping device 3, spot welding device 4;Welding clamping device 3 is equipped with lifting drive 31, two spacing adjustment mechanisms 32 are oppositely arranged on lifting drive 31, and clamping conveying unit 33 is arranged on spacing adjustment mechanism 32;Spot welding device 4 includes power supply 41, spot welding clamping mechanism 42 and spot welding mechanism 43;In welding clamping device 3, lifting drive 31 is fixed to rack 1, drives two oppositely arranged spacing adjustment mechanisms 32 and clamping conveying unit 33 to lift, and clamping conveying unit 33 adjusts the spacing of carbon brush and clamps carbon brush under the action of spacing adjustment mechanism 32.Spot welding device 4 is composed of power supply 41, spot welding clamping mechanism 42 and spot welding mechanism 43, and the three work cooperatively, wherein clamping unit 421, spot welding unit 431 and clamping conveying unit 33 correspond one by one.When equipment is running, feeding device 2 sends carbon brush to welding clamping device 3, clamping conveying unit 33 clamps carbon brush, spacing adjustment mechanism 32 adjusts spacing, and lifting drive 31 sends carbon brush to spot welding device 4;Spot welding clamping mechanism 42 clamps carbon brush, welding clamping device 3 resets, spot welding mechanism 43 completes welding, spot welding clamping mechanism 42 releases carbon brush, and completes carbon brush automatic spot welding work.Through the cooperative work of setting feeding device 2, welding clamping device 3 and spot welding device 4, the automatic process of carbon brush spot welding is realized, manual intervention is reduced, and production efficiency is improved;The one-to-one correspondence of multiple clamping conveying units 33, clamping units 421 and spot welding units 431 enables multiple carbon brushes to be clamped, conveyed and welded simultaneously, further improving work efficiency;Spacing adjustment mechanism 32 can adjust the spacing between carbon brushes, and spot welding clamping mechanism 42 and spot welding mechanism 43 can adapt to carbon brushes of different sizes and shapes, meeting diversified production needs.

[0088] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0089] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through intermediate medium, or it can be the communication inside two elements.The above-mentioned terms in the present application can be understood according to specific meaning by those skilled in the art.

Claims

1. A carbon brush automatic spot welding machine, comprising a rack (1), the rack (1) is provided with a feeding device (2), a welding clamping device (3) and a spot welding device (4), characterized in that: the welding clamping device (3) is provided with a lifting driver (31), two spacing adjustment mechanisms (32) are oppositely arranged on the lifting driver (31), and a clamping conveying unit (33) is arranged on the spacing adjustment mechanism (32); the spot welding device (4) comprises a power supply (41), a spot welding clamping mechanism (42) and a spot welding mechanism (43); the spot welding clamping mechanism (42) comprises a plurality of clamping units (421), each clamping unit (421) is composed of oppositely arranged clamping blocks (4211); the spot welding mechanism (43) comprises a plurality of spot welding units (431), each spot welding unit (431) is composed of a pair of electrodes (4311) and a spot welding moving driver (4312); the clamping conveying unit (33), the clamping unit (421) and the spot welding unit (431) are arranged one by one.

2. An automatic spot welding machine for carbon brushes according to claim 1, characterized in that, the feeding device (2) comprises a feeding support frame (21) arranged on the rack (1), the feeding support frame (21) is provided with a feeding linear module (22), the feeding linear module (22) is provided with a multi-degree-of-freedom mechanical arm (23) and an end effector (24), and the end effector (24) is a clamping jaw.

3. The automatic spot welding machine for carbon brush according to claim 1, characterized in that, the spacing adjustment mechanism (32) comprises a plurality of oppositely arranged spacing adjustment seats (321), adjacent spacing adjustment seats (321) are connected through connecting rods (322), and a spacing adjustment cylinder (323) is arranged on one side of the spacing adjustment seat (321); the clamping conveying unit (33) comprises a first clamping finger part (331) and a second clamping finger part (332) arranged on the spacing adjustment seat (321), and a discharging box (34) is arranged below the clamping conveying unit (33).

4. An automatic spot welding machine for carbon brushes according to claim 3, characterized in that, the first clamping finger part (331) comprises a first clamping finger (3311) and a first clamping finger driver (3312), and the first clamping finger (3311) is mounted on the first clamping finger driver (3312); the second clamping finger part (332) comprises a second clamping finger (3321) and a second clamping finger driver (3322), and the second clamping finger (3321) is mounted on the second clamping finger driver (3322); the first clamping finger (3311) and the second clamping finger (3321) are oppositely arranged.

5. An automatic spot welding machine for carbon brushes according to claim 4, characterized in that, the first clamping finger (3311) comprises two clamping finger plates (33111), a locking groove (33112) is arranged between the two clamping finger plates (33111), a clamping guide groove (33113) is arranged on the two clamping finger plates (33111), a locking plate (33211) is arranged on the second clamping finger (3321), clamping guide plates (33212) are arranged on the upper and lower sides of the locking plate (33211), and the abutting faces of the clamping guide groove (33113) and the clamping guide plate (33212) are triangular.

6. An automatic spot welding machine for carbon brushes according to claim 3, characterized in that, The spacing adjusting mechanism (32) is further provided with a spacing adjusting guide groove (324), the spacing adjusting seat (321) is in a "convex" structure, the spacing adjusting seat (321) is slidably installed in the spacing adjusting guide groove (324), and the spacing adjusting guide groove (324) is provided with a cylinder fixing plate (325) on one side.

7. An automatic spot welding machine for carbon brushes according to claim 1, characterized in that, The spot welding clamping mechanism (42) comprises clamping support plates (422), clamping drivers (423) are arranged on the two sides of the clamping support plates (422) respectively, output ends of the clamping drivers (423) are connected with pull rods (424), clamping blocks (4211) are arranged on the pull rods (424) at intervals, the clamping blocks (4211) on the two pull rods (424) are distributed in a staggered manner to form clamping units (421), and ceramic blocks are arranged on the clamping blocks (4211).

8. An automatic spot welding machine for carbon brushes according to claim 7, characterized in that, The spot welding mechanism (43) comprises welding fixing frames (432), spot welding moving drivers (4312) are fixedly installed on the two sides of the welding fixing frames (432), the spot welding moving drivers (4312) are connected with welding moving seats (433), welding fixing heads (434) are arranged on the welding moving seats (433), and electrodes (4311) are fixedly installed on the welding fixing heads (434).

9. An automatic spot welding machine for carbon brushes according to claim 8, characterized in that, The welding fixing head (434) is fixedly installed on the welding moving seat (433), and an insulating sleeve (435) and an insulating gasket (436) are arranged between the welding fixing head (434) and the welding moving seat (433).

10. The automatic spot welding machine for carbon brush according to claim 8, characterized in that, The pull rods (424) are arranged in the axial direction perpendicular to the reciprocating movement direction of the electrodes (4311), the clamping units (421) are located between the spot welding units (431), the welding fixing frames (432) are provided with welding linear guides (437), and the welding moving seats (433) are arranged on the sliding blocks of the welding linear guides (437).

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