Carbon brush spot welding tool

Abstract

The utility model relates to the technical field of carbon brush welding, in particular to a carbon brush spot welding tool which comprises a rack, a transformer, a clamping assembly and a spot welding assembly are arranged on the rack, the clamping assembly comprises at least two clamping units, and each clamping unit is composed of oppositely-arranged clamping blocks; the spot welding assembly comprises at least two spot welding units, and each spot welding unit is composed of a pair of electrodes and a spot welding moving driver. The clamping units and the spot welding units are arranged in a one-to-one correspondence mode, each clamping unit is composed of clamping blocks which are oppositely arranged, and flexible clamping operation can be conducted on carbon brushes of different specifications; the spot welding assembly is composed of an electrode and a spot welding moving driver, and the spot welding precision and efficiency are improved; by arranging the clamping units and the spot welding units which are in one-to-one correspondence, it is guaranteed that spot welding can be rapidly and accurately conducted after each carbon brush is clamped, the whole spot welding process is optimized, the working efficiency and quality of spot welding of the carbon brushes are greatly improved, and the defective rate caused by the welding problem is reduced.

Description

TECHNICAL FIELD

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

[0002] Carbon brush is a kind of sliding contact, mainly used for conducting current between rotating parts and stationary parts, it is usually made of graphite, impregnated graphite and other materials, with good conductivity, lubricity and wear resistance. In various electric tools, automobile motor, industrial motor and other equipment, carbon brush passes through the close contact with current collector ring or commutator, and current is introduced or led out of rotating armature winding, so as to realize the mutual conversion of electric energy and mechanical energy.

[0003] Each carbon brush is equipped with a wire, and the carbon brush wire is usually composed of multiple metal wires. The main function of the wire is to conduct current from the carbon brush to the external circuit. In order to ensure the stable transmission of current and the overall performance of the wire, the wire of the carbon brush usually needs to be welded to make it into one strand. However, the common carbon brush spot welding device is single-point welding, and the welding efficiency is low. The welding point position is not accurate, and the welding strength is insufficient. In addition, due to the diversity of carbon brush specifications, the common spot welding device can usually only weld carbon brushes of the same specification. When the carbon brush specification needs to be changed, complex adjustment of the tooling is required, which reduces the flexibility and efficiency of production. SUMMARY

[0004] To solve the above problems, the present application provides a kind of carbon brush spot welding tool, including rack, the rack is provided with transformer, clamping assembly and spot welding assembly, the transformer is connected with spot welding assembly by copper band;The clamping assembly includes at least two clamping units, each clamping unit is formed by oppositely arranged clamping block, and ceramic block is arranged on the clamping block;The spot welding assembly includes at least two spot welding units, each spot welding unit is formed by a pair of electrode and spot welding mobile driver;The clamping unit and the spot welding unit are correspondingly arranged.

[0005] In one embodiment, the clamping assembly includes a clamping support plate, the clamping support plate is provided with a clamping driver on both sides, the output end of the clamping driver is connected to a pull rod, the clamping blocks are arranged on the pull rod, and the clamping blocks on the two pull rods are staggered to form a clamping unit.

[0006] In one embodiment, the spot welding assembly includes a welding fixture, the spot welding mobile driver is fixedly installed on both sides of the welding fixture, the spot welding mobile driver is connected to a welding mobile seat, the welding mobile seat is provided with a welding fixed head, and the electrode is fixedly installed on the welding fixed head.

[0007] In one embodiment, the welding fixing head is fixedly installed on the welding moving base, and an insulating sleeve and an insulating gasket are arranged between the welding fixing head and the welding moving base.

[0008] In one embodiment, water inlet and outlet joints are arranged on the welding fixing head.

[0009] In one embodiment, the axial direction of the pull rod is perpendicular to the reciprocating movement direction of the electrode.

[0010] In one embodiment, a linear guide rail is arranged on the welding fixing frame, and the welding moving base is arranged on the sliding block of the linear guide rail.

[0011] In one embodiment, the copper belts are respectively connected to the electrodes through wires.

[0012] In one embodiment, the clamping support plate is fixedly installed on the rack through a cushion block, and the clamping driver is a pneumatic cylinder.

[0013] The application has the following beneficial effects:

[0014] The utility model discloses a kind of carbon brush spot welding tool, including rack, transformer is arranged on rack, clamping component and spot welding component, transformer is connected with spot welding component by copper belt;Clamping component includes at least two clamping units, each clamping unit is made of oppositely arranged clamping block, and ceramic block is arranged on clamping block;Spot welding component includes at least two spot welding units, and each spot welding unit is made of a pair of electrode and spot welding mobile driver;Clamping unit and spot welding unit are arranged one by one.When needing to carry out spot welding operation to carbon brush, carbon brush is clamped and fixed by oppositely arranged clamping block, and ceramic block insulates the current between clamping block and carbon brush, to prevent short circuit;Spot welding mobile driver works, and a pair of electrode is moved to the position where carbon brush wire needs to be welded.Precipitation of electrode receives electric energy from transformer, generates instantaneous high heat, and the metal part of carbon brush wire is rapidly melted, so as to realize welding, and wire is fused into a strand.In the present application, clamping component is provided with at least two clamping units, and each unit is made of opposite clamping block, and flexible and stable clamping operation can be carried out for different specifications of carbon brush.Spot welding component is provided with at least two spot welding units, and is made of electrode and spot welding mobile driver, to realize the movement and spot welding operation of accurately controlled electrode, improve the precision and efficiency of spot welding.Through the arrangement of one-to-one corresponding clamping unit and spot welding unit, it is guaranteed that each carbon brush can be rapidly and accurately spot welded after clamping, the whole spot welding process is optimized, the working efficiency and quality of carbon brush spot welding are greatly improved, and the rate of defective products caused by welding problem is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 For the structure of the utility model Figure 1 ;

[0016] Figure 2 Structure diagram of the utility model Figure 2 ;

[0017] Figure 3 Structure diagram of the clamping assembly

[0018] Figure 4 Structure diagram of the spot welding assembly

[0019] Figure 5 Enlarged view of A in the Figure 2

[0020] Explanation of symbols in the drawing:

[0021] 1, rack

[0022] 2, transformer; 21, copper strip; 22, wire

[0023] 3, clamping assembly

[0024] 31, clamping unit; 311, clamping block; 312, ceramic block

[0025] 32, clamping support plate; 33, clamping driver; 34, pull rod; 35, cushion block

[0026] 4, spot welding assembly

[0027] 41, spot welding unit; 411, electrode; 412, spot welding moving driver

[0028] 42, welding fixing frame; 43, welding moving seat

[0029] 44, welding fixed head; 441, water inlet pipe joint; 442, water outlet pipe joint

[0030] 45, insulating sleeve

[0031] 46, insulating gasket; 47, linear guide rail DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0033] ​It should be noted that the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0034] As shown in Figures 1-4 A carbon brush spot welding tool, comprising a rack 1, a transformer 2, a clamping assembly 3 and a spot welding assembly 4 are arranged on the rack 1, the transformer 2 is connected with the spot welding assembly 4 through a copper belt 21; the clamping assembly 3 comprises at least two clamping units 31, each clamping unit 31 is composed of oppositely arranged clamping blocks 311, and a ceramic block 312 is arranged on the clamping block 311; the spot welding assembly 4 comprises at least two spot welding units 41, each spot welding unit 41 is composed of a pair of electrodes 411 and a spot welding moving driver 412; the clamping unit 31 and the spot welding unit 41 are arranged one by one.

[0035] Specifically, the rack 1 serves as a main body support structure, on which a transformer 2, a clamping assembly 3 and a spot welding assembly 4 are integrated; the transformer 2 is electrically connected with electrodes 411 of the spot welding assembly 4 through a copper belt 21 to realize welding current transmission; the clamping assembly 3 is composed of at least two groups of clamping units 31, each group of clamping units 31 including a pair of oppositely arranged clamping blocks 311, and a ceramic block 312 being fixed on the surface of the clamping block 311; the spot welding assembly 4 is provided with at least two groups of spot welding units 41 corresponding to the clamping units 31, each group of spot welding units 41 being composed of a pair of electrodes 411 and a spot welding moving driver 412 driving the movement of the electrodes 411, and the spatial positions of the electrodes 411 and the clamping blocks 311 being matched in coordination. The clamping support plate 32 is fixedly installed on the rack 1 through a pad 35, and the clamping driver 33 can be an air cylinder. When it is necessary to perform spot welding operation on the carbon brush, the carbon brush is clamped and fixed by the oppositely arranged clamping blocks 311, and the ceramic block 312 insulates the current between the clamping block and the carbon brush to prevent short circuit; the spot welding moving driver 412 works to push the pair of electrodes 411 to move to the position where the carbon brush wire needs to be welded. After receiving electric energy from the transformer 2, the electrodes 411 generate instantaneous high heat to rapidly melt the metal part of the carbon brush wire, so as to realize welding and fuse the wires into one. After the spot welding is completed, the spot welding moving driver 412 drives the electrodes 411 to retreat to the initial position, the clamping blocks 311 are loosened, and the carbon brush on which the spot welding has been completed is taken out. In the present application, the clamping assembly 3 is provided with at least two clamping units 31, and each unit is composed of opposite clamping blocks 311, so that flexible and stable clamping operation can be performed on carbon brushes of different specifications. The spot welding assembly 4 is provided with at least two spot welding units 41 composed of electrodes 411 and spot welding moving drivers 412 to realize accurate control of the movement of the electrodes 411 and spot welding operation, improve the precision and efficiency of spot welding. By setting one-to-one corresponding clamping units 31 and spot welding units 41, it is ensured that each carbon brush can be rapidly and accurately spot welded after being clamped, the entire spot welding process is optimized, the working efficiency and quality of the carbon brush spot welding are greatly improved, and the rate of defective products caused by welding problems is reduced.

[0036] As shown in Figure 1 , 3 , the clamping assembly 3 includes a clamping support plate 32, the clamping support plate 32 is provided with clamping drivers 33 on both sides, the output ends of the clamping drivers 33 are connected with pull rods 34, the clamping blocks 311 are arranged on the pull rods 34 in an interval, and the clamping blocks 311 on the two pull rods 34 are distributed in an interlaced manner to form clamping units 31.

[0037] Specifically, the clamping assembly 3 drives the two pull rods 34 to move in opposite directions (one side of the pull rod moves left, and the other side of the pull rod moves right) through the clamping drivers 33 symmetrically arranged on both sides of the clamping support plate 32. The clamping blocks 311 arranged at intervals on the two pull rods 34 are staggered. When the driver 33 is actuated, the two groups of clamping blocks 311 move synchronously with the pull rod 34 to move closer to the center or separate, and the staggered closing forms a clamping space, so that the carbon brush is uniformly clamped in the staggered gap of the clamping block 311. The symmetrical driving design makes the clamping process balanced, avoiding the offset of the carbon brush caused by unbalanced load; the staggered clamping blocks 311 disperse the clamping pressure through multi-point contact, preventing the carbon brush from deforming or being damaged; the spacing of the clamping blocks 311 is adjustable, and when replacing the carbon brush of different specifications, only the spacing of the clamping blocks 311 needs to be adjusted to adapt to carbon brushes of different sizes, improving the flexibility and efficiency of production.

[0038] As shown in Figure 1 , 4 , the spot welding assembly 4 includes a welding fixed frame 42, the spot welding moving drivers 412 are fixedly installed on both sides of the welding fixed frame 42, the spot welding moving drivers 412 are connected with a welding moving seat 43, the welding fixed head 44 is arranged on the welding moving seat 43, and the electrode 411 is fixedly installed on the welding fixed head 44.

[0039] Specifically, the spot welding assembly 4 synchronously drives the welding moving seat 43 to move to the middle through the spot welding moving drivers 412 symmetrically installed on both sides of the welding fixed frame 42, drives the electrode 411 on the welding fixed head 44 to accurately approach the carbon brush welding position fixed by the clamping assembly 3 from both sides, and realizes synchronous press welding of the two electrodes 411. The symmetrical layout of the two spot welding moving drivers 412 ensures that the welding pressure is balanced, avoiding the offset or virtual welding of the welding point caused by unilateral pressure, and at the same time, the bilateral synchronous feeding shortens the welding preparation time.

[0040] As shown in Figure 4 , the welding fixed head 44 is fixedly installed on the welding moving seat 43, and the welding fixed head 44 and the welding moving seat 43 are provided with an insulating sleeve 45 and an insulating gasket 46.

[0041] Specifically, the welding fixed head 44 is installed in isolation from the welding moving seat 43 through the insulating sleeve 45 and the insulating gasket 46. When the electrode 411 is electrified for welding, the insulating sleeve 45 and the insulating gasket 46 wrap the contact surface of the welding fixed head 44 and the moving seat 43, block the radial current leakage, and avoid current diversion or equipment short circuit.

[0042] As shown in Figure 4 , the welding fixed head 44 is provided with a water inlet connector 441 and a water outlet connector 442.

[0043] Specifically, the welding fixture head 44 introduces cooling water through the water inlet joint 441, and discharges the cooling water through the water outlet joint 442 after the cooling water flows through the internal water channel of the welding fixture head 44, thereby forming a circulating cooling system. When the electrode 411 is powered on for welding, the cooling water continuously carries away the high-temperature heat generated during the welding process, so as to ensure that the electrode 411 and the welding fixture head 44 are within a stable working temperature range.

[0044] As shown in Figure 2 , 4 , 5, the pull rod 34 is arranged in the axial direction perpendicular to the reciprocating movement direction of the electrode 411, and the clamping unit 31 is located between the pair of electrodes 411.

[0045] Specifically, when the clamping unit 31 moves horizontally to clamp the carbon brush through the pull rod 34, the two electrodes 411 on the vertical direction are synchronously pushed to the middle carbon brush position for welding, and the clamping and welding actions do not interfere with each other in space, thereby realizing efficient cooperation of the clamping positioning and welding process. The vertical arrangement of the pull rod 34 and the electrode 411 makes the equipment structure compact and reduces the risk of motion interference; and the separation of the clamping and welding directions ensures that the carbon brush completes accurate welding in a stable clamping state.

[0046] As shown in Figure 4 , the welding fixture 42 is provided with a linear guide rail 47, and the welding moving seat 43 is arranged on the sliding block of the linear guide rail 47.

[0047] Specifically, the welding moving seat 43 is connected with the welding fixture 42 through the sliding block of the linear guide rail 47, and the spot welding moving driver 412 drives the welding moving seat 43 to accurately translate along a preset track, so that the electrode 411 is quickly positioned to the carbon brush welding position.

[0048] As shown in Figure 4 , 5 , the copper strip 21 is connected with the electrode 411 through the wire 22.

[0049] Specifically, the copper strip 21 is directly communicated with the two electrodes 411 through the wire 22, and the current is stably transmitted from the power supply to the electrode 411 through the copper strip 21 and the wire 22 during welding, so that efficient spot welding is realized by using the resistance heat of the contact surface between the electrode 411 and the carbon brush.

[0050] The application discloses a carbon brush spot welding tool, which comprises a rack 1, wherein a transformer 2, a clamping assembly 3 and a spot welding assembly 4 are arranged on the rack 1, the transformer 2 is connected with the spot welding assembly 4 through a copper belt 21; the clamping assembly 3 comprises at least two clamping units 31, each clamping unit 31 is formed by oppositely arranged clamping blocks 311, and a ceramic block 312 is arranged on each clamping block 311; the spot welding assembly 4 comprises at least two spot welding units 41, each spot welding unit 41 is formed by a pair of electrodes 411 and a spot welding moving driver 412; the clamping units 31 and the spot welding units 41 are arranged in one-to-one correspondence. When the carbon brush needs to be subjected to spot welding operation, the carbon brush is clamped and fixed by the oppositely arranged clamping blocks 311, the ceramic block 312 insulates the current between the clamping blocks and the carbon brush, and short circuit is prevented; the spot welding moving driver 412 works, and the pair of electrodes 411 are pushed to move to a position where the carbon brush wire needs to be welded. After the electrodes 411 receive electric energy from the transformer 2, instantaneous high heat is generated, the metal part of the carbon brush wire is rapidly melted, thereby realizing welding and fusing the wire into one. In the application, the clamping assembly 3 is provided with at least two clamping units 31, and each unit is formed by the oppositely arranged clamping blocks 311, so that flexible and stable clamping operation can be conducted on carbon brushes of different specifications. The spot welding assembly 4 is provided with at least two spot welding units 41, which are formed by the electrodes 411 and the spot welding moving driver 412, so that the movement of the electrodes 411 and the spot welding operation can be accurately controlled, and the precision and efficiency of spot welding are improved. By arranging the clamping units 31 and the spot welding units 41 in one-to-one correspondence, it is ensured that each carbon brush can be rapidly and accurately subjected to spot welding after being clamped, the whole spot welding process is optimized, the working efficiency and quality of the carbon brush spot welding are greatly improved, and the rate of defective products caused by welding problems is reduced.

[0051] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0052] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A carbon brush spot welding tool, comprising a rack (1), a transformer (2), a clamping assembly (3) and a spot welding assembly (4) arranged on the rack (1), and the transformer (2) is connected with the spot welding assembly (4) through a copper belt (21); characterized in that: the clamping assembly (3) comprises at least two clamping units (31), each of the clamping units (31) is composed of oppositely arranged clamping blocks (311), and a ceramic block (312) is arranged on the clamping block (311); the spot welding assembly (4) comprises at least two spot welding units (41), each of the spot welding units (41) is composed of a pair of electrodes (411) and a spot welding moving driver (412); the clamping units (31) and the spot welding units (41) are arranged one by one.

2. The carbon brush spot welding tool of claim 1, wherein, the clamping assembly (3) comprises a clamping support plate (32), clamping drivers (33) are arranged on both sides of the clamping support plate (32), output ends of the clamping drivers (33) are connected with pull rods (34), the clamping blocks (311) are arranged on the pull rods (34) at intervals, and the clamping blocks (311) on the two pull rods (34) are distributed in a staggered manner to form the clamping unit (31).

3. The carbon brush spot welding tool of claim 1, wherein, the spot welding assembly (4) comprises a welding fixed frame (42), the spot welding moving drivers (412) are fixedly installed on both sides of the welding fixed frame (42), the spot welding moving drivers (412) are connected with a welding moving seat (43), the welding moving seat (43) is provided with a welding fixed head (44), and the electrodes (411) are fixedly installed on the welding fixed head (44).

4. The carbon brush spot welding tool of claim 3, wherein, the welding fixed head (44) is fixedly installed on the welding moving seat (43), and an insulating sleeve (45) and an insulating gasket (46) are arranged between the welding fixed head (44) and the welding moving seat (43).

5. The carbon brush spot welding tool of claim 3, wherein, water inlet pipe joints (441) and water outlet pipe joints (442) are arranged on the welding fixed head (44).

6. The carbon brush spot welding tool of claim 2, wherein, the pull rods (34) are arranged in a direction perpendicular to a reciprocating movement direction of the electrodes (411).

7. The carbon brush spot welding tool of claim 3, wherein a linear guide rail (47) is arranged on the welding fixed frame (42), and the welding moving seat (43) is arranged on a sliding block of the linear guide rail (47).

8. The carbon brush spot welding tool of claim 1, wherein, the copper belt (21) is connected with the electrodes (411) through wires (22).

9. The carbon brush spot welding tool of claim 2, wherein, the clamping support plate (32) is fixedly installed on the rack (1) through a cushion block (35), and the clamping drivers (33) are air cylinders.

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