Welding device for small-space operation

Abstract

The utility model relates to the technical field of welding equipment, in particular to a welding device for small-space operation, which comprises a grab handle. An adjusting mechanism is arranged on the grab handle and comprises a welding gun head, the welding gun head is rotationally connected to the tail end of the grab handle, a clamping block is fixedly connected to the outer side of the welding gun head, a positioning frame is slidably connected to the tail end of the grab handle, and a clamping groove corresponding to the clamping block in structure is formed in the inner side of the positioning frame. The tail end of the clamping block is fixedly connected with a contact elastic piece, one end of the positioning frame is fixedly connected with a guide rod, and the outer side of the guide rod is sleeved with a reset spring. The angle between the welding gun head and the grab handle can be conveniently adjusted in the using process through the arranged angle adjusting type welding gun head, so that welding operation can be conveniently conducted on a deep area when operation is conducted in a small space, the application range of the device is widened, and the situation that welding equipment is limited by a welding structure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a welding device for small-space operation. Background Technique

[0002] At present, there are still many defects in some small-space welding technologies. For example, in the welding of valve types, the material itself, the selection of welding process, and non-automated production have become difficult problems for the production of many enterprises today. Since the welding position is inside the ball valve, the welding space is extremely narrow, and continuous welding is required. Also, the welding torch needs to have a high heat input to ensure the penetration depth. Therefore, it is necessary to reduce the size of the torch body and improve its internal structure and cooling system to solve the spatial difficulties and ensure that the long-term heat accumulation during welding will not damage the torch body itself.

[0003] The utility model patent with the publication number of CN 213497097 U discloses a TIG welding torch for small-space operation. In this solution, a grip, a tungsten electrode, a tungsten electrode clamp, a torch head, and a conductive nozzle are provided, and it also includes a cooling structure and a high-temperature resistant insulating protection nozzle. A central hole and a plurality of ventilation holes are opened on the flat surface at one end of the conductive nozzle. The lower end of the tungsten electrode clamp passes through the central hole of the conductive nozzle, and the other end of the conductive nozzle is detachably connected to the inner wall of the lower end of the torch head. The conductive nozzle can clamp and fix the tungsten electrode. A high-temperature resistant insulating protection nozzle is sleeved outside the conductive nozzle, and the high-temperature resistant insulating protection nozzle is detachably connected to the outer wall of the lower end of the torch head. The cooling structure is located inside the torch head and surrounds the outer wall of the air outlet. The gaps between the inner wall of the torch head and the air outlet and the cooling structure are filled with heat-conducting and insulating substances. This welding torch has the advantages of small volume and high water-cooling efficiency, and at the same time still has a good inert gas protection transmission function, high welding efficiency and good welding stability.

[0004] However, there are still some deficiencies in the above solution. Among them, the welding equipment in the above solution is of a fixed structure, and the angle between the torch head and the handle cannot be adjusted, resulting in the size of the welding area being limited by the length of the torch head, and the welding operation cannot be carried out on the structure of a small area, thus affecting the application range of the device. In view of this, we propose a welding device for small-space operation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a welding device for small-space operation, which solves the problem that the welding equipment in the prior art is of a fixed structure, and the angle between the torch head and the handle cannot be adjusted, resulting in the size of the welding area being limited by the length of the torch head, and the welding operation cannot be carried out on the structure of a small area, thus affecting the application range of the device.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A welding device for working in a small space, comprising a handle;

[0008] An adjusting mechanism is provided on the handle. The adjusting mechanism includes a welding torch head, which is rotatably connected to the end of the handle. A clamping block is fixedly connected to the outside of the welding torch head. A positioning frame is slidably connected to the end of the handle. A slot corresponding to the structure of the clamping block is provided inside the positioning frame. A contact elastic sheet is fixedly connected to the end of the clamping block. A guide rod is fixedly connected to one end of the positioning frame, and a return spring is sleeved outside the guide rod.

[0009] Preferably, a conductive nozzle is connected inside the welding torch head, a tungsten electrode head is connected in the middle of the conductive nozzle, and a tungsten electrode clamp is sleeved at one end of the tungsten electrode head.

[0010] Preferably, a cooling mechanism is provided on the handle. The cooling mechanism includes a delivery pipe fixedly connected inside the handle, a cooling pipe fixedly connected inside the welding torch head, and the cooling pipe is coiled inside the welding torch head.

[0011] Preferably, support rods are fixedly connected to both sides of the welding torch head. The support rods are of a hollow structure, and the welding torch head is rotatably connected to the handle through the support rods.

[0012] Preferably, one end of the support rod passes through the handle and is arranged inside the handle, and both ends of the support rod are respectively communicated with the delivery pipe and the cooling pipe.

[0013] Preferably, a gas pipeline is connected inside the handle. A connection cavity is provided inside the handle, and the connection cavity is communicated with the gas pipeline. A buffer spring is fixedly connected to the end of the gas pipeline.

[0014] Preferably, the gas pipeline is made of an elastic material, and the gas pipeline passes through the welding torch head and is connected inside the welding torch head.

[0015] By means of the above technical solution, the present utility model provides a welding device for working in a small space, which at least has the following beneficial effects:

[0016] (1). By providing an angle-adjustable welding torch head in the present utility model, the angle between the welding torch head and the handle can be conveniently adjusted during use, so that when working in a small space, welding operations can be conveniently carried out on deeper areas, thereby improving the application range of the device and avoiding the limitation of the welding equipment by the welding structure.

[0017] (2) The cooling mechanism of the present utility model can be connected through the hollow support rod structure, so as to connect the coolant conveying pipeline inside the handle with the cooling pipeline inside the welding torch head, facilitating the cooling operation of the inside of the welding torch head through the coolant, and avoiding the overheating of the welding torch head during the welding process due to excessive temperature, which affects its use. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application:

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model Figure 1 ;

[0020] Figure 2 Schematic diagram of the overall structure of the present utility model Figure 2 ;

[0021] Figure 3 Schematic diagram of the internal structure of the present utility model Figure 1 ;

[0022] Figure 4 Schematic diagram of the internal structure of the present utility model Figure 2 ;

[0023] Figure 5 Schematic diagram of the internal structure of the present utility model Figure 3 。

[0024] In the figure: 1, handle; 2, adjustment mechanism; 201, welding torch head; 202, clamping block; 203, positioning frame; 204, clamping groove; 205, contact elastic sheet; 206, guide rod; 207, return spring; 208, conductive nozzle; 209, tungsten electrode head; 210, tungsten electrode clamp; 3, cooling mechanism; 301, conveying pipe; 302, cooling pipe; 303, support rod; 304, gas pipeline; 305, connection cavity; 306, buffer spring. Specific Embodiment

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, 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 model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] A welding device for small-space operations, such as Figures 1 - 5As shown, it includes a handle 1; an adjusting mechanism 2 is provided on the handle 1. The adjusting mechanism 2 includes a welding torch head 201. The welding torch head 201 is rotatably connected to the end of the handle 1. A clamping block 202 is fixedly connected to the outside of the welding torch head 201. A positioning frame 203 is slidably connected to the end of the handle 1. A clamping groove 204 corresponding to the structure of the clamping block 202 is opened on the inner side of the positioning frame 203. A contact elastic sheet 205 is fixedly connected to the end of the clamping block 202. A guide rod 206 is fixedly connected to one end of the positioning frame 203. A return spring 207 is sleeved on the outside of the guide rod 206. The adjusting mechanism 2 can conveniently adjust the angle of the welding torch head 201, so as to facilitate the welding torch to adapt to the welding processing requirements of different angles, and avoid contact collision between the welding torch and the product to be welded due to a fixed angle during the use of the welding torch, which affects the welding operation. The structure of the clamping block 202 can fix the welding torch head 201 after the angle of the welding torch head 201 is adjusted, so as to fasten the welding torch head 201 after the adjustment of the welding torch head 201 is completed, and avoid loosening of the welding torch head 201 during the welding process. At the same time, the structure of the contact elastic sheet 205 can cooperate with the positioning frame 203. The inside of the positioning frame 203 is made of metal material, so as to connect the welding torch head 201 when the clamping block 202 is stuck inside the clamping groove 204, and realize subsequent welding operations. The structure of the guide rod 206 can conveniently guide the movement of the positioning frame 203, and avoid tilting or offset of the positioning frame 203, which affects the clamping and limiting operation of the clamping block 202. At the same time, the structure of the return spring 207 can conveniently reset the positioning frame 203. After the angle adjustment of the welding torch head 201 is completed, the positioning frame 203 can be abutted against the side of the clamping block 202 through the elasticity of the return spring 207, and the clamping block 202 can be stuck inside the clamping groove 204 of the positioning frame 203, so as to realize the positioning operation of the clamping block 202 and the welding head. A conductive nozzle 208 is connected inside the welding torch head 201. A tungsten electrode head 209 is connected in the middle of the conductive nozzle 208. A tungsten electrode clamp 210 is sleeved on one end of the tungsten electrode head 209;

[0028] Embodiment 2

[0029] As Figures 1 - 5As shown in the figure, a cooling mechanism 3 is provided on the handle 1. The cooling mechanism 3 includes a delivery pipe 301. The delivery pipe 301 is fixedly connected inside the handle 1. A cooling pipe 302 is fixedly connected inside the welding torch head 201. The cooling pipe 302 is coiled inside the welding torch head 201. The cooling mechanism 3 can perform cooling operations on the inside of the handle 1 and the welding torch head 201, thereby avoiding damage to the welding torch head 201 caused by excessive temperature inside the welding torch head 201. The structure of the delivery pipe 301 can convey the coolant, thereby facilitating the flow of the coolant inside the handle 1 and avoiding the influence of external pipes outside the handle 1 on the welding operation. At the same time, the structure of the cooling pipe 302 inside the welding torch head 201 can enable the coolant to flow inside the welding torch head 201, thereby performing a cooling operation on the inside of the welding torch head 201. Two sides of the welding torch head 201 are fixedly connected with support rods 303. The support rods 303 are of a hollow structure. The welding torch head 201 is rotatably connected to the handle 1 through the support rods 303. The structure of the support rods 303 can support the welding torch head 201. At the same time, the hollow support rods 303 can form a function similar to a tube, thereby connecting the delivery pipe 301 and the cooling pipe 302 to facilitate the flow of the coolant. One end of the support rod 303 passes through the handle 1 and is arranged inside the handle 1. Both ends of the support rod 303 are respectively connected and communicated with the delivery pipe 301 and the cooling pipe 302. A gas pipe 304 is connected inside the handle 1. A connection cavity 305 is opened inside the handle 1. The connection cavity 305 is connected and communicated with the gas pipe 304. The end of the gas pipe 304 is fixedly connected with a buffer spring 306. The gas pipe 304 can conveniently introduce a protective gas into the inside of the welding torch head 201 for protection during the welding process. The gas pipe 304 is made of an elastic material. The gas pipe 304 passes through the welding torch head 201 and is connected inside the welding torch head 201. The elastic gas pipe 304 can be bent at different angles during adjustment. At the same time, the structure of the buffer spring 306 can limit the position of the gas pipe 304;

[0030] When a welding device for small-space operation of the present utility model is in use, the positioning frame 203 can be conveniently moved away from the clamping block 202 by moving the positioning frame 203 outward through the guide rod 206, and the return spring 207 is compressed. At the same time, the welding torch head 201 is rotated to conveniently adjust the angle of the welding torch head 201. After the adjustment is completed, the guide rod 206 can be released. The compressed return spring 207 pushes the positioning frame 203 to move towards the direction close to the clamping block 202 by its own elasticity until the clamping block 202 is moved into the clamping groove 204, and then the angle adjustment operation of the welding torch head 201 is completed. At the same time, coolant is introduced into the conveying pipe 301. The coolant then flows along the conveying pipe 301 and flows into the cooling pipe 302 through the connected support rod 303. The cooling pipe 302 is coiled inside the welding torch head 201. During the continuous flow of the coolant inside the cooling pipe 302, the welding torch head 201 is cooled to avoid damage to the welding torch head 201 caused by overheating during the welding process. While the welding torch head 201 is rotating, the gas pipeline 304 is pulled outwards, so that the gas pipeline 304 can adapt to different angles of the welding torch head 201. At the same time, when the welding torch head 201 rotates to be close to the gas pipeline 304, the gas pipeline 304 can be received inward under the action of the buffer spring 306, so as to avoid the gas pipeline 304 being exposed to the outside for too long.

[0031] 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 terms "comprising", "including" or any other variant thereof are 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.

[0032] Although the embodiments of the present utility model 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 principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A welding device for working in a small space, comprising a handle (1), characterized in that: The handle (1) is provided with an adjusting mechanism (2). The adjusting mechanism (2) includes a welding torch head (201). The welding torch head (201) is rotatably connected to the end of the handle (1). A clamping block (202) is fixedly connected to the outside of the welding torch head (201). A positioning frame (203) is slidably connected to the end of the handle (1). A clamping groove (204) corresponding to the structure of the clamping block (202) is formed inside the positioning frame (203). A contact elastic sheet (205) is fixedly connected to the end of the clamping block (202). A guide rod (206) is fixedly connected to one end of the positioning frame (203). A return spring (207) is sleeved on the outside of the guide rod (206).

2. The welding device for small-space operation according to claim 1, wherein: A conductive nozzle (208) is connected inside the welding torch head (201). A tungsten electrode head (209) is connected in the middle of the conductive nozzle (208). A tungsten electrode clamp (210) is sleeved on one end of the tungsten electrode head (209).

3. A welding device for small-space operation according to claim 1, characterized in that: The handle (1) is provided with a cooling mechanism (3). The cooling mechanism (3) includes a delivery pipe (301). The delivery pipe (301) is fixedly connected inside the handle (1). A cooling pipe (302) is fixedly connected inside the welding torch head (201). The cooling pipe (302) is coiled inside the welding torch head (201).

4. A welding device for small-space operation according to claim 1, characterized in that: Support rods (303) are fixedly connected to both sides of the welding torch head (201). The support rods (303) are of a hollow structure. The welding torch head (201) is rotatably connected to the handle (1) through the support rods (303).

5. A welding device for small-space operation according to claim 4, characterized in that: One end of the support rod (303) passes through the handle (1) and is arranged inside the handle (1). Both ends of the support rod (303) are respectively communicated with the delivery pipe (301) and the cooling pipe (302).

6. A welding device for small-space operation according to claim 1, characterized in that: A gas pipeline (304) is connected inside the handle (1). A connection cavity (305) is formed inside the handle (1). The connection cavity (305) is communicated with the gas pipeline (304). A buffer spring (306) is fixedly connected to the end of the gas pipeline (304).

7. A welding device for small-space operation according to claim 6, characterized in that: The gas pipeline (304) is made of an elastic material. The gas pipeline (304) passes through the welding torch head (201) and is connected inside the welding torch head (201).

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