Single-hand and double-hand hammering spot welding gun

Abstract

The single-double-hand hammering spot welding gun comprises a gun body, a sliding rod is arranged at the front end of the gun body, one end of the sliding rod is connected with the gun body, and a spot welding head is arranged at the other end of the sliding rod; the spot welding head comprises a welding unit and a grounding unit, the welding unit is connected with a power supply line, the grounding unit is connected with a ground wire, an insulation structure is arranged between the welding unit and the grounding unit, the grounding unit is fixedly arranged on the sliding rod, and the welding unit extends out of the grounding unit. The extension end of the welding unit retracts towards the grounding unit after being pressed in contact with the metal plate, so that the grounding unit is in contact with the metal plate for welding at the same time; a sliding weight is arranged on the sliding rod, the sliding rod is sleeved with the sliding weight, and the sliding weight can slide along the sliding rod. According to the single-double-hand hammering spot welding gun, due to the fact that the single-double-hand hammering spot welding gun is provided with a ground wire connecting structure and a drawing function at the same time, matching of corresponding external devices is not needed, and the portability and convenience of equipment are improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile repair, in particular to a single-handed and double-handed hammer spot welding gun. Background Art

[0002] Spot welding guns are commonly used devices for automobile sheet metal repair, and are mainly suitable for automobile sheet metal repair of car bodies.

[0003] The existing spot welding gun needs the following devices to work with it: first, the ground wire. Before the spot welding gun is used for welding, the external ground wire needs to be connected to the sheet metal first, so as to form a loop with the spot welding gun; second, the meson sheet and the pulling device. The main function of the existing spot welding gun is to weld the meson sheet to the sheet metal to be repaired, and then use the pulling device to connect the meson sheet, and operate the pulling device to pull up the sheet metal to be repaired to restore it. For some sheet metal repairs with smaller areas, the above devices must also be used for cooperation, which reduces the convenience and portability of the device.

[0004] Therefore, it is necessary to propose a new spot welding gun that integrates the spot welding function and the drawing function. Utility Model Content

[0005] In order to solve one of the technical problems existing in the prior art, the present application provides a single-handed hammer spot welding gun, whose spot welding head includes a welding unit and a grounding unit at the same time, and there is no need to set an external ground wire. A sliding rod and a sliding hammer are provided at the front end of the spot welding gun, and a pulling function is integrated, thereby improving the functionality of the spot welding gun.

[0006] According to the first aspect of the present invention, a single-handed hammer spot welding gun includes a gun body, a sliding rod is provided at the front end of the gun body, one end of the sliding rod is connected to the gun body, and a spot welding head is provided at the other end of the sliding rod;

[0007] The spot welding head includes a welding unit and a grounding unit, the welding unit is connected to a power supply line, the grounding unit is connected to a ground line, an insulating structure is provided between the welding unit and the grounding unit, the grounding unit is fixedly provided on the sliding rod, the welding unit extends out of the grounding unit, and the extended end of the welding unit retracts toward the direction of the grounding unit after contacting the sheet metal and being pressed so that the grounding unit simultaneously contacts the sheet metal for welding;

[0008] The slide bar is provided with a slide hammer, the slide hammer is sleeved on the slide bar, and the slide hammer can slide along the slide bar.

[0009] The single-handed and double-handed hammer spot welding gun according to the embodiment of the first aspect of the utility model has at least the following beneficial effects: compared with the prior art, the single-handed and double-handed hammer spot welding gun of the present application includes a welding unit and a grounding unit on the spot welding head at the same time, and the welding unit extends out of the grounding unit. When welding, the extended end of the welding unit retracts in the direction of the grounding unit after contacting the sheet metal and being pressed so that the grounding unit can contact the sheet metal at the same time, and the current loop is connected for welding. Therefore, there is no need to set an external ground wire, which is more convenient to use; in addition, the present application is provided with a sliding rod and a sliding hammer at the front end of the gun body. After the welding unit is spot welded on the sheet metal, the sliding hammer is operated to slide and hit the gun body, which can play the role of a pulling device, thereby integrating the pulling function, reducing the dependence on the pulling device, and further improving the convenience of using the spot welding gun; since the single-handed and double-handed hammer spot welding gun of the present application has both the structure of connecting the ground wire and the pulling function, it does not require the cooperation of corresponding external devices, thereby improving the portability and convenience of the equipment.

[0010] According to the single-handed and double-handed hammer spot welding gun described in the first aspect of the utility model, an anti-collision gasket is provided at the connection between the gun body and the slide rod. The anti-collision gasket can protect the gun body during collision and extend the service life of the equipment.

[0011] According to the single-handed and double-handed hammer spot welding gun described in the first aspect of the utility model, a first spring is arranged between the sliding hammer and the gun body, one end of the first spring is connected to the gun body, and the other end of the first spring is connected to the sliding hammer, and the first spring pulls the sliding hammer toward the gun body. The arrangement of the first spring enables the sliding hammer to be better fixed on the spot welding gun.

[0012] According to the single-handed or double-handed hammer spot welding gun described in the first aspect of the utility model, the power supply wire and the ground wire are arranged on the gun body.

[0013] According to the single-handed and double-handed hammer spot welding gun described in the first aspect of the utility model, the sliding rod is a hollow metal tube, and the ground wire is electrically connected to the grounding unit through the sliding rod;

[0014] A conductive member is disposed in the slide bar, the conductive member is connected to the welding unit, and the power supply line is electrically connected to the welding unit through the conductive member;

[0015] The sliding rod and the conductive member are insulated from each other.

[0016] According to the single-handed or double-handed hammer spot welding gun described in the first aspect of the utility model, a second spring is arranged in the gun body, and the second spring is arranged on the conductive member, and the second spring pushes the conductive member to extend outward so that the welding unit extends out of the grounding unit.

[0017] According to the single-handed and double-handed hammer spot welding gun described in the first aspect of the utility model, a baffle for limiting the moving stroke of the conductive member is arranged within the gun body, a nut member is arranged on the conductive member corresponding to the baffle, the nut member is adjustably arranged on the conductive member, and when the second spring pushes the conductive member to extend outward to a preset stroke, the nut member touches the baffle to limit the stroke of the conductive member.

[0018] According to the single-handed or double-handed hammer spot welding gun described in the first aspect of the utility model, a trigger is provided on the gun body, and when the trigger is pulled, the power supply line supplies power to the welding unit.

[0019] According to the single-handed or double-handed hammer spot welding gun described in the first aspect of the utility model, the insulating structure between the welding unit and the grounding unit is an insulating ferrule.

[0020] According to the single-handed or double-handed hammer spot welding gun described in the first aspect of the utility model, the sliding hammer includes a gripping portion, and raised hand guards are provided at both ends of the gripping portion.

[0021] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0023] Figure 1 It is a front view of the single-handed and double-handed hammer spot welding gun provided in the first aspect of the present application.

[0024] Figure 2 yes Figure 1 A three-dimensional perspective view of a two-handed hammer spot welding gun in the middle.

[0025] Figure 3 yes Figure 1 Partial analysis diagram of the single two-handed hammer spot welding gun.

[0026] Description of Figure Numbers:

[0027] Gun body 100, first protrusion 110, grip 120, trigger 121, reinforcing rib 130, slide bar 200, grounding unit 210, ground wire 220, connecting sleeve 230, locking bolt 231, slide hammer 300, gripping portion 310, hand guard 320, second protrusion 330, first spring 340, conductive member 400, welding unit 410, power supply line 420, locking bolt 430, insulating separation sleeve 440, second spring 450, baffle 460, insulating ring 510. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying 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.

[0029] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or they can communicate with each other; it can be a direct connection, or it can be an indirect connection through an intermediate medium or intermediate structure, and it can be the internal connection of two elements, indirect connection, or the interaction relationship between two elements.

[0030] In the description of this application, it should be noted that the meaning of "several" is one or more, the meaning of "multiple" is more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] The following is combined with Figure 1 To Attachment Figure 3 , the embodiments of the present application are further described.

[0032] Reference Figures 1 to 3 In the first aspect, the present application provides a specific embodiment of a single-handed hammer spot welding gun, including a gun body 100, on which a power supply line 420 and a ground line 220 are arranged, and a sliding rod 200 is arranged at the front end of the gun body 100, one end of the sliding rod 200 is connected to the gun body 100, and a spot welding head is arranged at the other end of the sliding rod 200.

[0033] like Figure 1 , Figure 3As shown, in this embodiment, the spot welding head includes a welding unit 410 and a grounding unit 210, the welding unit 410 is connected to the power supply line 420, and the grounding unit 210 is connected to the grounding line 220. Specifically, the slide bar 200 is a hollow metal tube, the slide bar 200 is provided with a conductive connecting sleeve 230, the grounding line 220 is locked on the connecting sleeve 230 by a locking bolt 231, and the grounding unit 210 is fixedly arranged on the slide bar 200, so that the grounding unit 210 is electrically connected to the grounding line 220. A conductive member 400 is arranged inside the slide bar 200, the power supply line 420 is locked on the conductive member 400 by a locking bolt 430, and the other end of the conductive member 400 passes through the hollow slide bar 200 to connect the welding unit 410, so that the welding unit 410 is electrically connected to the power supply line 420. Among them, at the front end of the slide rod 200, an insulating ring 510 is arranged between the slide rod 200 and the conductive member 400 to separate the two, and at the part where the slide rod 200 enters the gun body 100, an insulating separation sleeve 440 is arranged between the slide rod 200 and the conductive member 400 to separate the two. The setting of the insulating ring 510 and the insulating separation sleeve 440 prevents the slide rod 200 and the conductive member 400 from contacting each other, thereby ensuring that the two are insulated from each other.

[0034] like Figures 1 to 3 As shown, in this embodiment, the gun body 100 is provided with a grip 120 for the user to hold, and a trigger 121 is provided at the front end of the grip 120. The power line 420 is usually disconnected. After the trigger 121 is pulled, the power line 420 is connected, so that the power line 420 can smoothly supply power to the welding unit 410 through the conductive member 400. Further, in order to facilitate operation, the gun body 100 of this embodiment is made into a pistol shape. It is easy to understand that the gun body 100 of this embodiment adopts the shape of a pistol. Figure 1 The shape is convenient for operators to operate, but the shape of the gun body 100 of the present application is not limited to the case provided in this embodiment. As long as it is a component or structure that can provide the same function, such as a straight-cylinder shape, it is within the protection scope of the present application.

[0035] like Figures 1 to 3 As shown, in this embodiment, the welding unit 410 extends out of the grounding unit 210. When welding is performed, the extended end of the welding unit 410 retracts toward the grounding unit 210 after contacting the sheet metal and being pressed, so that the grounding unit 210 contacts the sheet metal at the same time to form a loop. There is no need to set an external ground wire 220, which is more convenient to use. After the trigger 121 is pulled, the large current input through the power supply line 420 flows through the welding unit 410 and the sheet metal, and then flows back from the grounding unit 210 to the ground wire 220. When the large current flows through the welding unit 410 and the sheet metal, a large amount of heat is generated for welding, so that the welding unit 410 is spot-welded on the sheet metal.

[0036] Further, such as Figure 3As shown, in this embodiment, a second spring 450 is provided in the gun body 100, and the second spring 450 is provided on the conductive member 400. The second spring 450 pushes the conductive member 400 to extend outward, so that the welding unit 410 extends outward from the grounding unit 210. When the extended end of the welding unit 410 contacts the sheet metal and retracts in the direction of the grounding unit 210, it needs to overcome the elastic force of the second spring 450, so that the operator must continue to apply pressure to the welding gun to ensure that the contact between the spot welding head and the sheet metal is good during welding. In addition, a baffle 460 for limiting the moving stroke of the conductive member 400 is also provided in the gun body 100, and a nut member is provided on the conductive member 400 corresponding to the baffle 460, and the nut member can be adjusted on the conductive member 400. When the second spring 450 pushes the conductive member 400 to extend outward to a preset stroke, the nut member touches the baffle 460 to limit the stroke of the conductive member 400. By adjusting the position of the nut member, the stroke of the conductive member 400 can also be set to adjust the extended length of the welding unit 410 to change the pressure required to overcome the elastic force of the second spring 450 .

[0037] Further, such as Figure 3 As shown, in this embodiment, a plurality of reinforcing ribs 130 are arranged inside the gun body 100, and the reinforcing ribs 130 are arranged around the conductive member 400. The arrangement of the reinforcing ribs 130 not only strengthens the structure of the gun body 100 to make it more solid, but also isolates and protects the conductive member 400. When the outer shell constituting the gun body 100 is removed, it is not easy for people to directly contact the conductive member 400, thereby avoiding accidents.

[0038] like Figures 1 to 3 As shown, in this embodiment, a slide hammer 300 is provided on the slide bar 200, and the slide hammer 300 is sleeved on the slide bar 200, and the slide hammer 300 can slide along the slide bar 200. The slide hammer 300 includes a gripping portion 310, and raised hand guards 320 are provided at both ends of the gripping portion 310. After the welding unit 410 is spot welded on the sheet metal, the slide hammer 300 is operated to slide forward, and then the slide hammer 300 is operated to quickly hit the gun body 100, which can play the role of a pulling device, thereby integrating the pulling function, reducing the dependence on the pulling device, and further improving the convenience of using the spot welding gun.

[0039] Furthermore, an anti-collision pad is provided at the connection between the gun body 100 and the slide bar 200. The anti-collision pad can protect the gun body 100 during collision and extend the service life of the equipment.

[0040] Furthermore, a first spring 340 is provided between the slide hammer 300 and the gun body 100. The gun body 100 is provided with a first protrusion 110, and the hand guard 320 of the slide hammer 300 is provided with a second protrusion 330. One end of the first spring 340 is connected to the first protrusion 110, and the other end of the first spring 340 is connected to the second protrusion 330. The first spring 340 pulls the slide hammer 300 toward the gun body 100. The provision of the first spring 340 enables the slide hammer 300 to be better fixed on the spot welding gun at ordinary times.

[0041] Compared with the prior art, the single-handed hammer spot welding gun of the present application includes a welding unit 410 and a grounding unit 210 on the spot welding head at the same time. The welding unit 410 extends out of the grounding unit 210. When welding, the extended end of the welding unit 410 retracts in the direction of the grounding unit 210 after contacting the sheet metal and being pressed so that the grounding unit 210 can contact the sheet metal at the same time, and the current loop is connected for welding. Therefore, there is no need to set an external ground wire, which is more convenient to use. In addition, the present application is provided with a slide bar 200 and a slide hammer 300 at the front end of the gun body. After the welding unit 410 is spot welded on the sheet metal, the slide hammer 300 is operated to slide and hit the gun body 100, which can play the role of a pulling device, thereby integrating the pulling function, reducing the dependence on the pulling device, and further improving the convenience of using the spot welding gun. The single-handed hammer spot welding gun of the present application has both the structure of connecting the ground wire and the pulling function, so there is no need for the corresponding external device to cooperate, which improves the portability and convenience of the equipment.

[0042] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A single-handed hammer spot welding gun, characterized in that: It comprises a gun body, a sliding rod is arranged at the front end of the gun body, one end of the sliding rod is connected to the gun body, and a spot welding head is arranged at the other end of the sliding rod; The spot welding head includes a welding unit and a grounding unit, the welding unit is connected to a power supply line, the grounding unit is connected to a ground line, an insulating structure is provided between the welding unit and the grounding unit, the grounding unit is fixedly provided on the sliding rod, the welding unit extends out of the grounding unit, and the extended end of the welding unit retracts toward the direction of the grounding unit after contacting the sheet metal and being pressed so that the grounding unit simultaneously contacts the sheet metal for welding; The slide bar is provided with a slide hammer, the slide hammer is sleeved on the slide bar, and the slide hammer can slide along the slide bar.

2. The single or double-handed hammer spot welding gun according to claim 1, characterized in that: An anti-collision gasket is arranged at the connection between the gun body and the slide rod.

3. The single or double-handed hammer spot welding gun according to claim 1 or 2, characterized in that: A first spring is arranged between the slide hammer and the gun body, one end of the first spring is connected to the gun body, and the other end of the first spring is connected to the slide hammer, and the first spring pulls the slide hammer toward the gun body.

4. The single-handed hammer spot welding gun according to claim 1, characterized in that: The power supply line and the ground line are arranged on the gun body.

5. The single or double-handed hammer spot welding gun according to claim 1 or 4, characterized in that: The sliding rod is a hollow metal tube, and the ground wire is electrically connected to the grounding unit through the sliding rod; A conductive member is disposed in the slide bar, the conductive member is connected to the welding unit, and the power supply line is electrically connected to the welding unit through the conductive member; The sliding rod and the conductive member are insulated from each other.

6. The single-handed hammer spot welding gun according to claim 5, characterized in that: A second spring is disposed in the gun body, and the second spring is disposed on the conductive member. The second spring pushes the conductive member to extend outward, so that the welding unit extends out of the grounding unit.

7. The single or double-handed hammer spot welding gun according to claim 6, characterized in that: A baffle plate for limiting the moving stroke of the conductive member is arranged in the gun body, a nut member is arranged on the conductive member corresponding to the baffle plate, and the nut member is adjustably arranged on the conductive member. When the second spring pushes the conductive member to extend outward to a preset stroke, the nut member touches the baffle plate to limit the stroke of the conductive member.

8. The single or double-handed hammer spot welding gun according to claim 1, characterized in that: The gun body is provided with a trigger, and when the trigger is pulled, the power supply line supplies power to the welding unit.

9. The single-handed hammer spot welding gun according to claim 1, characterized in that: The insulating structure between the welding unit and the grounding unit is an insulating ferrule.

10. The single or double-handed hammer spot welding gun according to claim 1, characterized in that: The slide hammer comprises a gripping portion, and raised hand guards are arranged at both ends of the gripping portion.

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