Spot welding tool device for motor brush carrier wire

Abstract

The utility model belongs to the technical field of welding tools, and particularly relates to a spot welding tool device for a motor brush carrier wire, which comprises a U-shaped base, a support is fixedly connected to the middle of the top surface of the U-shaped base, a tray is horizontally and slidably connected to the middle of the top surface of the support, a placing groove is arranged on the inner side of the tray, and a brush carrier is placed on the inner side of the placing groove; the side, close to the opening, of the top face of the U-shaped base is horizontally and slidably connected with a sliding frame, the top face of the sliding frame is fixedly connected with a wire guiding assembly which is horizontally opposite to the tray, a wire is clamped to the inner side of the wire guiding assembly, and the wire and the welding end of the electric brush carrier are located on the same horizontal line. According to the utility model, through the slidable tray and the guiding assembly, automatic positioning and alignment of the brush holder and the wire are realized, manual operation is changed into mechanical assembly, manual errors are eliminated, and through the horizontal positioning structure, welding spots and wire ends are ensured to be always on the same horizontal line, so that the welding quality stability and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to welding frock technical field especially relates to a spot welding frock device of motor brush holder lead wire. BACKGROUND

[0002] Spot welding frock is more common mechanical equipment in our daily life, adopts the principle of double-sided double-point overcurrent welding, two electrodes pressurize workpiece when working and make two layers of metal form certain contact resistance under the pressure of two electrodes, and welding current forms instantaneous hot fusion joint at two contact resistance points when flowing from one electrode to another electrode, and welding current forms loop from another electrode to this electrode along two workpieces instantaneously, and will not damage the internal structure of the welded workpiece, such as the lead wire of motor brush holder component needs spot welding frock to weld when processing.

[0003] In the process of producing motor, the lead wire of brush holder component needs to be connected by medium frequency spot welding machine, and the prior art relies on manual operation of workers to align the welding point of brush holder and the end of lead wire and place them between the upper and lower electrodes of medium frequency spot welding machine, so as to weld the lead wire on the welding point of brush holder. However, the workers are prone to fatigue after long-time operation of arms, and the welding position of brush holder and lead wire cannot be guaranteed to be always on the same horizontal line, and the consistency of welding quality is difficult to guarantee.

[0004] Therefore, there is an urgent need for a spot welding frock device of motor brush holder lead wire to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a spot welding frock device of motor brush holder lead wire, through the structural setting of U-shaped base and slidable tray, combining the accurate positioning function of lead wire guide assembly, realize the automatic positioning alignment of brush holder and lead wire, convert the welding process of traditional dependence on manual operation into mechanized fixed assembly mode, not only effectively eliminate the welding position deviation caused by manual fatigue, still ensure that the welding point and the end of lead wire are always on the same horizontal line through the horizontal corresponding structure of placing groove and guide assembly, thereby significantly improve the consistency and stability of welding quality.

[0006] To achieve the above object, the utility model provides the following scheme:

[0007] A spot welding frock device of motor brush holder lead wire, including U-shaped base, the U-shaped base top surface middle part is fixedly connected with support, the support top surface middle part is horizontally slidably connected with tray, the tray inner side is opened and is equipped with placing groove, and the brush holder is placed in the placing groove inner side;

[0008] The U-shaped base top surface is horizontally and slidably connected with a sliding frame near one side of the opening, the sliding frame top surface is fixedly connected with a wire guide assembly, the wire guide assembly is horizontally opposite to the tray, the wire is clamped in the wire guide assembly, and the welding end of the wire and the brush holder is located on the same horizontal line.

[0009] In a specific embodiment, a first sliding groove is formed in the middle of the top surface of the support, a first sliding block is fixedly connected to the bottom surface of the tray, and the tray is slidably connected to the inside of the first sliding groove through the first sliding block.

[0010] In a specific embodiment, a second sliding groove is formed in each side of the U-shaped base top surface near the opening, a second sliding block is fixedly connected to each side of the bottom end of the sliding frame, and the second sliding block is slidably matched with the inside of the corresponding second sliding groove.

[0011] In a specific embodiment, a fixing screw is threadedly connected to the bottom end of the second sliding block, and the fixing screw is in abutment with the bottom surface of the U-shaped base.

[0012] In a specific embodiment, the wire guide assembly comprises a fixed seat, an upper rotating roller and a lower rotating roller are rotatably connected to the inside of the fixed seat, the upper rotating roller and the lower rotating roller are sequentially arranged along the direction of gravity, and the wire is clamped between the upper rotating roller and the lower rotating roller.

[0013] In a specific embodiment, a guide cam is shaft-connected to the outside of the middle of each of the upper rotating roller and the lower rotating roller, a limiting groove is formed in the middle of the outside of the guide cam in the circumferential direction, and the wire is clamped between the two limiting grooves.

[0014] In a specific embodiment, a cavity is formed in the part of the fixed seat near the lower rotating roller, a sliding block is slidably connected to the inside of the cavity along the direction of gravity, a smooth surface is arranged at the top end of the sliding block, the top end of the sliding block is in abutment with the rotating shaft on one side of the lower rotating roller, and a return spring is arranged between the bottom end of the sliding block and the bottom end of the cavity.

[0015] In a specific embodiment, a recessed groove is formed in each of the side of the tray and the side of the support near the wire guide assembly.

[0016] Compared with the prior art, the utility model has the advantages and technical effects as follows:

[0017] The utility model discloses a structure setting of U-shaped base and slidable tray, combines the accurate positioning function of wire guide assembly, realizes the automation positioning alignment of brush holder and wire, converts the welding flow of traditional reliance manual operation into mechanized fixed assembly mode, not only effectively eliminates the welding position deviation caused by manual fatigue, still ensures welding spot and wire end always at same horizontal line through the horizontal corresponding structure of placing groove and guide assembly, thereby significantly improves the consistency and stability of welding quality, simultaneously reduces the operation difficulty and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings:

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the structure schematic diagram for embodying the separation of tray and support, the separation of slide and U-shaped base;

[0021] Figure 3 It is Figure 1 The enlarged view of A in the middle;

[0022] Figure 4 It is the sectional view of wire guide assembly of the utility model;

[0023] Figure 5 It is the structure schematic diagram for embodying the connection relationship of tray, first sliding block of the utility model;

[0024] 1, U-shaped base;2, support;3, first sliding groove;4, tray;5, first sliding block;6, second sliding groove;7, slide;8, second sliding block;9, wire guide assembly;901, fixed seat;902, upper roller;903, lower roller;904, guide cam;905, sliding block;906, return spring. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described in the following by combining the drawings in the embodiments of the utility model, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0027] The wire of the brush holder component needs to be connected by spot welding with a medium frequency spot welding machine, and the prior art relies on manual operation of workers to align the welding points of the brush holder and the end of the wire and place them between the upper and lower electrodes of the spot welding machine (such as a medium frequency spot welding machine), so as to weld the wire on the welding points of the brush holder. However, the workers are prone to fatigue after long-time operation of the arms, and the welding position of the brush holder and the wire cannot be guaranteed to be always on the same horizontal line, and the consistency of the welding quality is difficult to guarantee.

[0028] With reference to Figures 1 to 5 The utility model discloses a kind of spot welding tool devices of motor brush holder wire, including U-shaped baseplate 1, U-shaped baseplate 1 top middle part is fixedly connected with support 2, support 2 top middle part is horizontally slidably connected with tray 4, support 2 top middle part is equipped with first sliding slot 3, tray 4 bottom is fixedly connected with first sliding block 5, tray 4 is slidably connected in first sliding slot 3 inner side by first sliding block 5, tray 4 inner side is equipped with placing groove, and brush holder is placed in placing groove inner side. Tray 4, support 2 are all equipped with let go of slot (such as Figure 5 As shown in Figure 5 Arc-shaped groove in it is let go of slot). Let go of slot provides extension space for the welding end of the brush holder, avoids the shielding or interference of device structure to welding point, ensures that welding end and wire end can be directly and accurately exposed in the electrode acting range, so as to improve welding alignment stability and product consistency.

[0029] When using, worker first slides tray 4 to the side away from the opening end of U-shaped baseplate 1, after placing brush holder on tray 4, tray 4 is slid along first sliding slot 3, until sliding to the end of first sliding slot 3, at this time, welding end of brush holder is located between the upper and lower electrodes of spot welding machine, by setting first sliding slot 3 and first sliding block 5 to form horizontal sliding structure, make tray 4 can be flexibly moved and adjusted position along first sliding slot 3 when carrying brush holder, in combination with the fixed limiting function of placing groove in the inner side of tray 4 to brush holder, both ensure that the position of brush holder is stable during horizontal sliding, and can also quickly and accurately adjust its welding point to the preset station corresponding to wire end, significantly reduce the operation difficulty and error of manual alignment, improve welding positioning precision and efficiency, and the mechanical guiding characteristics of sliding structure further guarantee that welding point and wire end are always on the same horizontal line, thereby enhancing the consistency of welding quality.

[0030] A slide 7 is horizontally slidably connected to the top surface of the U-shaped base 1 near the opening. A wire guide assembly 9 is fixedly connected to the top surface of the slide 7. The wire guide assembly 9 is horizontally opposite to the tray 4. The wire is snapped into the inside of the wire guide assembly 9, and the welding end of the wire and the brush holder is on the same horizontal line. The brush holder is placed on the tray 4, and the wire is passed through the wire guide assembly 9. Without manual positioning, the brush holder on the tray 4 and the wire on the wire guide assembly 9 are automatically horizontally positioned for welding. This invention transforms the traditional manual welding process into a mechanized fixed assembly mode. It not only effectively eliminates welding position deviations caused by human fatigue but also ensures that the welding point and the wire end are always on the same horizontal line through the horizontal correspondence between the placement groove and the wire guide assembly 9. This significantly improves the consistency and stability of welding quality while reducing operational difficulty and increasing production efficiency.

[0031] The top surface of the U-shaped base 1 has two second sliding grooves 6 on both sides near the opening. The bottom ends of the slide 7 are fixedly connected to two second sliders 8 on both sides. The second sliders 8 slide within the corresponding second sliding grooves 6. The bottom ends of the second sliders 8 are threaded with fixing screws, which abut against the bottom surface of the U-shaped base 1 (e.g., ...). Figure 2 (As shown). When in use, first place the U-shaped base 1 on the worktable of the spot welding machine. At this time, the slide 7 and the U-shaped base 1 are still separate, which makes it easy for the U-shaped base 1 to pass through the upper and lower electrodes of the spot welding machine. After the U-shaped base 1 is placed, slide the slide 7 from the second slide groove 6 into the U-shaped base 1 until it is in the appropriate position. Then, turn the fixing screw to make it abut against the U-shaped base 1 to fix the position of the second slider 8, that is, fix the position of the slide 7.

[0032] The wire guide assembly 9 comprises a fixed seat 901, the upper rotating roller 902 and the lower rotating roller 903 are rotationally connected to the inner side of the fixed seat 901, the upper rotating roller 902 and the lower rotating roller 903 are sequentially arranged along the direction of gravity, and the wire is clamped between the upper rotating roller 902 and the lower rotating roller 903. The outer side of the middle part of the upper rotating roller 902 and the lower rotating roller 903 is shaft-connected with a guide cam 904, the middle part of the outer side of the guide cam 904 is provided with a limiting groove in the circumferential direction, and the wire is clamped between the two limiting grooves. The part of the fixed seat 901 close to the lower rotating roller 903 is provided with a cavity, the sliding block 905 is slidingly connected to the cavity along the direction of gravity, the top end of the sliding block 905 is provided with a smooth surface, the top end of the sliding block 905 abuts against the rotating shaft on one side of the lower rotating roller 903, and the reset spring 906 is arranged between the bottom end of the sliding block 905 and the bottom end of the cavity. The wire guide assembly 9 of the utility model realizes the double positioning of the wire in the horizontal and vertical directions through the cooperation of the upper rotating roller 902, the lower rotating roller 903 and the limiting groove of the guide cam 904, ensures the accurate alignment of the wire end and the welding point of the brush holder, meanwhile, the elastic self-adapting structure formed by the sliding block 905 and the reset spring 906 can automatically adjust the height of the lower rotating roller 903 according to the diameter of the wire, can clamp different specifications of wires to prevent deviation, reduces the friction loss through the smooth surface contact, guarantees the stable and smooth guiding process, and finally under the synergistic effect of mechanical constraint and elastic buffering, the wire positioning precision and welding consistency are significantly improved.

[0033] The working principle of the utility model is as follows:

[0034] In use, first, the U-shaped base 1 is placed on the workbench of the spot welding machine, at this time, the sliding frame 7 is still separated from the U-shaped base 1, facilitating the U-shaped base 1 to pass through the upper and lower electrodes of the spot welding machine, after the U-shaped base 1 is placed, the sliding frame 7 is slid into the U-shaped base 1 from the second sliding groove 6 until the appropriate position, at this time, the fixed screw is rotated to abut against the U-shaped base 1 to fix the position of the second sliding block 8, that is, the position of the sliding frame 7 is fixed. First, the worker slides the tray 4 to the side away from the opening end of the U-shaped base 1, places the brush holder on the tray 4, and then slides the tray 4 along the first sliding groove 3 until the end of the first sliding groove 3, at this time, the welding end of the brush holder is located between the upper and lower electrodes of the spot welding machine, the horizontal sliding structure formed by the first sliding groove 3 and the first sliding block 5 is arranged, so that the tray 4 can be flexibly moved and the position is adjusted when the brush holder is carried, in combination with the fixed limiting function of the placement groove in the inner side of the tray 4 to the brush holder, the position of the brush holder is stable in the horizontal sliding process, and the welding point can be quickly and accurately adjusted to the preset station corresponding to the wire end, at this time, the worker operates the wire to pass through the limiting groove and align with the welding end of the brush holder, and the upper and lower electrodes of the spot welding machine are contacted to complete the welding of the brush holder and the wire.

[0035] In the description of the utility model, need understanding is, the term "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as limiting the utility model.

[0036] The above-described embodiments are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope defined by the claims of the utility model.

Claims

1. A spot welding fixture for motor brush holder wires, characterized in that: Includes a U-shaped base (1), a bracket (2) is fixedly connected to the middle of the top surface of the U-shaped base (1), a tray (4) is horizontally slidably connected to the middle of the top surface of the bracket (2), and a placement groove is opened on the inner side of the tray (4), and the brush holder is placed inside the placement groove; The top surface of the U-shaped base (1) is horizontally slidably connected to a slide (7) on the side near the opening. The top surface of the slide (7) is fixedly connected to a wire guide assembly (9). The wire guide assembly (9) is horizontally opposite to the tray (4). The wire is snapped into the inside of the wire guide assembly (9). The welding end of the wire and the brush holder is on the same horizontal line.

2. The spot welding fixture for motor brush holder wires according to claim 1, characterized in that: The bracket (2) has a first groove (3) in the middle of its top surface, and the tray (4) has a first slider (5) fixedly connected to its bottom surface. The tray (4) is slidably connected to the inside of the first groove (3) through the first slider (5).

3. The spot welding fixture for motor brush holder wires according to claim 1, characterized in that: The top surface of the U-shaped base (1) is provided with second sliding grooves (6) on both sides near the opening. The bottom end of the slide (7) is fixedly connected with second sliders (8), and the second sliders (8) slide in cooperation with the inner side of the corresponding second sliding grooves (6).

4. The spot welding fixture for motor brush holder wires according to claim 3, characterized in that: The bottom end of the second slider (8) is threaded with a fixing screw, which abuts against the bottom surface of the U-shaped base (1).

5. The spot welding fixture for motor brush holder wires according to claim 1, characterized in that: The wire guiding assembly (9) includes a fixed base (901), and an upper rotating roller (902) and a lower rotating roller (903) are rotatably connected to the inner side of the fixed base (901). The upper rotating roller (902) and the lower rotating roller (903) are arranged sequentially along the direction of gravity, and the wire is clamped between the upper rotating roller (902) and the lower rotating roller (903).

6. The spot welding fixture for motor brush holder wires according to claim 5, characterized in that: The upper roller (902) and the lower roller (903) are both axially connected to guide cams (904) on their outer sides. The guide cams (904) have circumferential grooves on their outer sides, and the wires are clamped between the two circumferential grooves.

7. The spot welding fixture for motor brush holder wires according to claim 5, characterized in that: The fixed base (901) has a cavity near the lower roller (903). A slider (905) is slidably connected in the cavity along the direction of gravity. The top of the slider (905) has a smooth surface. The top of the slider (905) abuts against the rotating shaft on one side of the lower roller (903). A return spring (906) is provided between the bottom of the slider (905) and the bottom of the cavity.

8. The spot welding fixture for motor brush holder wires according to claim 1, characterized in that: Both the tray (4) and the bracket (2) have clearance grooves on the side near the wire guide assembly (9).

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