Maintenance spot welding device

Abstract

The utility model relates to the technical field of welding, in particular to a maintenance spot welding device which comprises a machine body, two holding handles, an electric wire between the machine body and the holding handles and electrode bars movably arranged in the holding handles, annular grooves are formed in the outer surfaces of the electrode bars, fixed cylinders are arranged in the holding handles, and movable cylinders are movably arranged on the inner walls of the holding handles. According to the maintenance spot welding device, the annular groove is formed in the electrode bar, the electrode bar is placed into the holding handle, the ball in the holding handle enters the annular groove, then the moving cylinder and the clamping assembly are used for abutting against the ball, the electrode bar is clamped into the clamping assembly, and the clamping assembly is used for controlling the moving cylinder to abut against the ball in the annular groove. The electrode bar can only rotate in the holding handle, the arranged clamping assembly can drive the moving cylinder to move and reset, the balls can move and abut against the inner wall of the annular groove, and therefore the electrode bar can be rapidly taken out of the holding handle, and maintenance complexity is reduced.

Description

Technical Field

[0001] The present utility model relates to the technical field of welding, and specifically relates to a maintenance spot welder. Background Art

[0002] A spot welder is a welding device widely used in industrial production, mainly used for connecting metal materials, and particularly plays an important role in industries such as automobile manufacturing, metal furniture, and electrical appliance manufacturing. Spot welding is a resistance welding technology that generates heat by passing an electric current through the contact points of two metal workpieces, melting the metal surface and quickly cooling and solidifying it to achieve the connection of the metal.

[0003] However, in actual use, when the existing maintenance spot welder performs electric welding, it is necessary to contact the electrode head and the object to be welded, such as a circuit board. Prolonged electric welding will cause a certain amount of wear to the electrode head. Therefore, it is necessary to rotate the electrode head so that the wear of the electrode head can be evenly distributed, thereby extending the service life of the electrode head. However, the existing one needs to rotate the entire holding handle and the wire between the holding handle and the battery. Since the holding handle and the electrode head are connected by threads, the wire will still reset when rotating, and it is necessary to rotate the holding handle back and forth for electric welding, which is more troublesome to use and will cause uneven wear of the electrode head during long-term use. For this reason, we propose a maintenance spot welder. Summary of the Utility Model

[0004] One technical problem to be solved by the present application is: how to design a maintenance spot welder that can conveniently rotate the electrode rod to make its wear uniform.

[0005] To solve the above technical problem, an embodiment of the present application provides a maintenance spot welder, including a body, two holding handles, a wire between the body and the holding handles, and an electrode rod movably arranged inside the holding handle. It further includes:

[0006] A ring groove, which is opened on the outer surface of the electrode rod;

[0007] A fixed cylinder, which is arranged inside the holding handle;

[0008] A plurality of balls, which are arranged inside the fixed cylinder and movably arranged on the inner wall of the ring groove;

[0009] A moving cylinder, which is movably arranged on the inner wall of the holding handle to limit the balls inside the ring groove;

[0010] A clamping component, which is arranged inside the holding handle and used to control the moving cylinder to press against the balls inside the ring groove and to take the balls out of the ring groove to remove the electrode rod from inside the holding handle.

[0011] In some embodiments, the locking assembly includes a limiting ring arranged on the outer surface of the fixed cylinder, a through groove is opened inside the movable cylinder, the inner wall of the through groove is movably arranged on the outer surface of the limiting ring, and a spring is sleeved on the outer surface of the fixed cylinder, and the two ends of the spring are respectively arranged on the inner wall of the through groove and the end face of the limiting ring.

[0012] In some embodiments, a slide groove is provided on the outer surface of the handle, a slider is movably provided on the inner wall of the slide groove, a side of the slider is provided on the outer surface of the moving cylinder, a moving plate is provided on the side of the slider, and the inner side of the moving plate is movably provided on the outer surface of the handle.

[0013] In some embodiments, a plurality of grooves are formed on the outer surface of the movable plate, and the outer surface of the movable plate is made of rubber.

[0014] In some embodiments, a connecting groove is provided on the outer surface of the fixed cylinder, and a circular groove corresponding to a plurality of balls is provided on the inner wall of the connecting groove. The outer surfaces of the plurality of balls are movably arranged on the corresponding inner walls of the circular grooves, and the diameters of the plurality of balls are all larger than the corresponding circular groove diameters.

[0015] In some embodiments, an electrical connection tube is disposed on the inner wall of the handle, the outer surface of the electrode rod is movably disposed on the inner wall of the electrical connection tube, a connecting piece is disposed on the end face of the electrical connection tube, and the outer surface of the wire is wound around the connecting piece.

[0016] In some embodiments, the end surface of the holding handle is provided with a dustproof tube for preventing dust from entering and causing static electricity, and the outer surface of the electrode rod is movably disposed on the inner wall of the dustproof tube.

[0017] This utility model has at least the following beneficial effects:

[0018] 1. By placing the electrode rod into the handle through the annular groove provided on the electrode rod, the ball inside the handle enters the annular groove, and then the moving cylinder and the clamping assembly are used to press against the ball, so that the electrode rod can only rotate inside the handle, thereby increasing the service life of the electrode rod;

[0019] 2. The provided snap-fit ​​assembly can drive the moving cylinder to move and reset, and can make the ball move and abut against the inner wall of the ring groove, so that the electrode rod can be quickly taken out from the inside of the holding handle, reducing the complexity of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the practical electric wire, the gripping handle and the electrode rod;

[0022] Figure 3 This is a schematic cross-sectional structure diagram of a practical electric wire, a holding handle, an electrode rod, and a clamping component;

[0023] Figure 4 This is an exploded structure diagram of a practical clamping component and a holding handle;

[0024] Figure 5 This is an exploded structure diagram of a practical fixed cylinder and a moving cylinder;

[0025] Figure 6 This is a structure diagram of a practical fixed cylinder and a spring;

[0026] Figure 7 This is a structure diagram of a practical holding handle and a dust-proof cylinder.

[0027] In the figure: 1. Body; 2. Electric wire; 3. Holding handle; 4. Electrode rod; 5. Clamping component; 51. Slide groove; 52. Slide block; 53. Moving plate; 54. Spring; 55. Limit ring; 56. Groove; 6. Moving cylinder; 7. Ball; 8. Electric connection cylinder; 9. Connecting piece; 10. Fixed cylinder; 11. Ring groove; 12. Connection groove; 13. Through groove; 14. Round groove; 15. Dust-proof cylinder. Specific implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility. Obviously, the described embodiments are only a part of the embodiments of the present utility, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility without creative efforts shall fall within the protection scope of the present utility.

[0029] Embodiment 1

[0030] Please refer to Figures 1-6 , the present utility provides a technical solution:

[0031] A maintenance spot welder includes a body 1, two holding handles 3, an electric wire 2 between the body 1 and the holding handle 3, and an electrode rod 4 movably arranged inside the holding handle 3. The holding handle 3 itself is made of insulating material, and further includes:

[0032] A ring groove 11 is formed on the outer surface of the electrode rod 4;

[0033] A fixed cylinder 10 is arranged inside the holding handle 3;

[0034] A plurality of balls 7 are arranged inside the fixed cylinder 10 and are movably arranged on the inner wall of the ring groove 11. The outer surface of the ball 7 is smooth;

[0035] The moving cylinder 6 is movably arranged inside the holding handle 3 to limit the ball 7 inside the annular groove 11.

[0036] The engaging assembly 5 is arranged inside the holding handle 3 and is used to control the moving cylinder 6 to press against the ball 7 inside the annular groove 11 and to disengage the ball 7 from the annular groove 11 to take out the electrode rod 4 from inside the holding handle 3.

[0037] The engaging assembly 5 includes a limiting ring 55 arranged on the outer surface of the fixed cylinder 10. A through groove 13 is formed inside the moving cylinder 6, and the inner wall of the through groove 13 is movably arranged on the outer surface of the limiting ring 55. A spring 54 is sleeved on the outer surface of the fixed cylinder 10, and the two ends of the spring 54 are respectively arranged on the inner wall of the through groove 13 and the end face of the limiting ring 55. The arranged spring 54 can play a reset role for the moving cylinder 6, and the limiting ring 55 is for supporting the spring 54.

[0038] A sliding groove 51 is formed on the outer surface of the holding handle 3. A slider 52 is movably arranged on the inner wall of the sliding groove 51. The side surface of the slider 52 is arranged on the outer surface of the moving cylinder 6. A moving plate 53 is arranged on the side surface of the slider 52, and the inner side of the moving plate 53 is movably arranged on the outer surface of the holding handle 3. The moving cylinder 6 can be driven to slide on the inner wall of the holding handle 3 through the moving plate 53.

[0039] A plurality of grooves 56 are formed on the outer surface of the moving plate 53, and the outer surface of the moving plate 53 is made of rubber. The settings of the grooves 56 and the rubber are for anti-slip, and at the same time, the rubber itself has an insulating effect.

[0040] A connecting groove 12 is formed on the outer surface of the fixed cylinder 10. Circular grooves 14 corresponding to a plurality of balls 7 are formed on the inner wall of the connecting groove 12. The outer surfaces of the plurality of balls 7 are movably arranged on the inner walls of the corresponding circular grooves 14. The diameters of the plurality of balls 7 are all larger than the diameters of the corresponding circular grooves 14. The diameter of the ball 7 being larger than the diameter of the circular groove 14 can prevent the ball 7 from falling off from inside the circular groove 14.

[0041] An electrical connection cylinder 8 is arranged on the inner wall of the holding handle 3. The outer surface of the electrode rod 4 is movably arranged on the inner wall of the electrical connection cylinder 8. A connecting piece 9 is arranged on the end face of the electrical connection cylinder 8. The outer surface of the wire 2 is wound around the connecting piece 9, so that power-on operation can still be carried out when the electrode rod 4 is rotated.

[0042] When using this device, first, it is necessary to install the electrode rod 4. Put the electrode rod 4 into the inside of the electrode rod 4 and the fixed cylinder 10. Pulling the moving plate 53 can drive the slider 52 to move on the inner wall of the chute 51. The slider 52 drives the moving cylinder 6 arranged on the side to move on the inner wall of the holding handle 3, and the moving cylinder 6 can be moved away from the outer surface of the ball 7. Therefore, when putting the electrode rod 4 into the inside of the fixed cylinder 10, the ball 7 can fall into the inside of the annular groove 11. Then release the moving plate 53. At this time, the spring 54 arranged on the inner wall of the moving cylinder 6 resets, driving the moving cylinder 6 to reset. The inner wall of the moving cylinder 6 squeezes the ball 7. At the same time, the end face of the electrode rod 4 enters the inside of the electrical connection cylinder 8 and is electrically connected to the wire 2 through the connecting piece 9. At this time, the electrode rod 4 can be rotated during work, and the electrode rod 4 can be prevented from falling off by the setting of the ball 7. When the electrode rod 4 needs to be replaced, it is necessary to turn off the machine body 1. After the electrode rod 4 cools down, pull the moving plate 53 to drive the slider 52 to move. The slider 52 drives the moving cylinder 6 to move. Therefore, there is no limiting object for the ball 7. Therefore, the electrode rod 4 can be pulled to squeeze the ball 7 into the round groove 14, thus completing the replacement of the electrode rod 4.

[0043] Embodiment 2

[0044] Please refer to Figure 7 , this utility model provides a technical solution:

[0045] Different from Embodiment 1, a dust-proof cylinder 15 for preventing dust from entering and causing static electricity is arranged on the end face of the holding handle 3, and the outer surface of the electrode rod 4 is movably arranged on the inner wall of the dust-proof cylinder 15.

[0046] When in use, the dust-proof cylinder 15 is installed on the end face of the holding handle 3 and the outer surface of the electrode rod 4, so that the flue gas and larger dust in the air generated during welding can reduce the risk of entering the inside of the holding handle 3. Therefore, the possibility of contacting the connecting piece 9 and the wire 2 can be reduced.

[0047] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although the embodiments of the present utility have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility. The scope of the present utility is defined by the appended claims and their equivalents.

Claims

1. A maintenance spot welder, comprising a body (1), two handles (3), a wire (2) between the body (1) and the handles (3), and an electrode rod (4) movably arranged inside the handles (3), characterized in that: Also included are: An annular groove (11), wherein the annular groove (11) is formed on the outer surface of the electrode rod (4); A fixed tube (10), wherein the fixed tube (10) is arranged inside the holding handle (3); A plurality of balls (7) are provided, which are arranged inside the fixed cylinder (10) and are movably arranged on the inner wall of the annular groove (11); A moving cylinder (6), wherein the moving cylinder (6) is movably arranged on the inner wall of the holding handle (3) and is used to limit the ball (7) inside the annular groove (11); A snap-fit ​​assembly (5) is arranged inside the holding handle (3) and is used to control the moving cylinder (6) to press against the ball (7) inside the annular groove (11), and to disengage the ball (7) from the annular groove (11) to remove the electrode rod (4) from the inside of the holding handle (3).

2. The repair spot welder according to claim 1, characterized in that: The engaging assembly (5) comprises a limiting ring (55) arranged on the outer surface of the fixed cylinder (10); a through groove (13) is provided inside the movable cylinder (6); the inner wall of the through groove (13) is movably arranged on the outer surface of the limiting ring (55); the outer surface of the fixed cylinder (10) is sleeved with a spring (54); the two ends of the spring (54) are respectively arranged on the inner wall of the through groove (13) and the end surface of the limiting ring (55).

3. The repair spot welder according to claim 2, characterized in that: The outer surface of the holding handle (3) is provided with a slide groove (51), the inner wall of the slide groove (51) is movably provided with a slider (52), the side surface of the slider (52) is arranged on the outer surface of the moving cylinder (6), the side surface of the slider (52) is provided with a moving plate (53), and the inner side of the moving plate (53) is movably provided on the outer surface of the holding handle (3).

4. The repair spot welder according to claim 3, characterized in that: The outer surface of the movable plate (53) is provided with a plurality of grooves (56), and the outer surface of the movable plate (53) is made of rubber.

5. The repair spot welder according to claim 4, characterized in that: The outer surface of the fixed cylinder (10) is provided with a connecting groove (12), the inner wall of the connecting groove (12) is provided with circular grooves (14) corresponding to the plurality of balls (7), the outer surfaces of the plurality of balls (7) are movably arranged on the inner walls of the corresponding circular grooves (14), and the diameters of the plurality of balls (7) are all larger than the diameters of the corresponding circular grooves (14).

6. The repair spot welder according to claim 5, characterized in that: The inner wall of the holding handle (3) is provided with an electrical connection tube (8), the outer surface of the electrode rod (4) is movably arranged on the inner wall of the electrical connection tube (8), the end surface of the electrical connection tube (8) is provided with a connection piece (9), and the outer surface of the electric wire (2) is wound around the connection piece (9).

7. The repair spot welder according to claim 6, characterized in that: The end surface of the holding handle (3) is provided with a dustproof tube (15) for preventing dust from entering and causing static electricity, and the outer surface of the electrode rod (4) is movably arranged on the inner wall of the dustproof tube (15).

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