A hand-held welding rod lengthening clamp device

Abstract

This utility model discloses an extended clamping device for a hand-held welding rod, belonging to the field of welding technology. It includes a clamp crown, a top cap, a copper tube, and a thermoplastic insulating tube. A thermoplastic insulating tube is fixedly fitted onto the exterior of one side of the copper tube body, and an external thread is provided on the other side of the copper tube body. On the threaded side, a clamp crown is installed inside the copper tube. The clamp crown is tapered, and its body is elastic. An axial central hole is provided inside the clamp crown, and the ends of the clamp crown are arranged in four evenly spaced lobes, with one end protruding from the copper tube. A top cap is threaded onto the copper tube at the exterior of this end of the clamp crown, encompassing the exposed end of the clamp crown. This utility model uses a copper tube as the extended connecting part. Tightening the top cap causes the clamp crown to move axially, clamping the welding rod inside the clamp crown under the action of the tapered clamp crown, fully utilizing the welding rod's length to weld narrow and long seams.

Description

Technical Field

[0001] This utility model relates to an extended clamping device for hand-held welding rods, belonging to the field of welding technology. Background Technology

[0002] In the process of manually arc welding narrow and long structural welds, the large geometric size of the welding torch often prevents it from reaching into the narrow space, resulting in insufficient use of the welding rod. Interference between the welding torch and the surrounding metal body leads to wasted welding rods. The limited rod length prevents reaching the welding position, so the rod length is usually increased (using two welding rods stacked along their length) to meet the required welding depth. Whenever interference occurs, the only option is to replace the welding torch with a new one to continue welding the original weld, resulting in significant electrode waste and time-consuming electrode replacement. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a hand-held welding rod extension clamping device. The device uses a copper tube as the extension connecting part. Tightening the top cap drives the clamping crown to move axially. Under the action of the clamping crown tapered, the welding rod inside the clamping crown is clamped, making full use of the welding material length of the welding rod to weld narrow and long weld seams.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a hand-held welding rod extension clamping device, including a clamp crown, a top cap, a copper tube and a thermoplastic insulating tube. The thermoplastic insulating tube is fixedly sleeved on the outside of one side of the copper tube body, and an external thread is provided on the other side of the copper tube body. On the side with the external thread, a clamp crown is installed inside the copper tube. The clamp crown is tapered, the clamp crown body is elastic, and an axial central hole is provided in the center of the inside of the clamp crown. The end of the clamp crown is divided into four petals that are evenly spaced apart, and the end of the clamp crown is exposed outside the copper tube. On the outside of the end of the clamp crown, a top cap is threadedly connected to the copper tube, and the top cap includes the end of the clamp crown exposed outside the copper tube.

[0005] Furthermore, the end of the crown is conical, and the inside of the end of the cap is also conical, with the curvature of the two conical surfaces being consistent.

[0006] Furthermore, the taper of the inner diameter of the copper tube is consistent with the taper of the clamp crown.

[0007] The beneficial effects of this utility model are: This utility model is applicable to welding work of narrow and long weld seams, reduces the replacement of welding rods, and improves work efficiency. The design structure of this welding rod extension clamping device is simple and the manufacturing cost is low. It only requires a thermoplastic-sealed insulating tube to be fitted on the outer wall of the copper tube, an external thread to be machined on the outer diameter of the front end of the copper tube, a taper to be machined on the inner diameter, and a clamping crown and a top cap at the outer diameter to be machined in conjunction with the inner diameter taper. The extension clamping device can then be assembled. The operation process is convenient, safe and reliable, and it can be widely used in hand-held welding occasions of narrow and long weld seams. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Numbering on the map:

[0011] 1. Crown, 2. Top cap, 3. Copper tube, 4. Thermoplastic insulating tube. Detailed Implementation

[0012] like Figure 1 As shown, a hand-held welding rod extension clamping device includes a clamp crown 1, a top cap 2, a copper tube 3, and a thermoplastic insulating tube 4. The thermoplastic insulating tube 4 is fixedly sleeved on the outside of one side of the main body of the copper tube 3, and an external thread is provided on the other side of the main body of the copper tube 3. On the side with the external thread, the inner diameter of the copper tube 3 is tapered, and a clamp crown 1 is installed inside the copper tube 3. The clamp crown 1 is tapered, the main body of the clamp crown 1 is elastic, and an axial central hole is provided in the center of the inside of the clamp crown 1. The end of the clamp crown 1 is divided into four petals that are evenly spaced apart, and the end of the clamp crown 1 is exposed outside the copper tube 3. On the outside of the end of the clamp crown 1, a top cap 2 is threadedly connected to the copper tube 3, and the top cap 2 includes the end of the clamp crown 1 that is exposed outside the copper tube 3. The end of the clamp crown 1 is a conical surface, and the inside of the end of the top cap 2 is also a conical surface, and the curvature of the two conical surfaces is consistent.

[0013] Without altering the welding torch or other auxiliary tools, this extended clamping device for the hand-held welding rod uses a copper tube 3 as the extended connecting part. The outer wall of the copper tube 3 is fitted with a thermoplastic insulating tube 4 as insulation material to prevent short circuits between the copper tube 3 and the welding material. Under the action of the threaded connection, tightening the top cap 2 drives the clamping crown 1 to move axially, and the welding rod inside the clamping crown 1 is clamped and fixed by the taper of the clamping crown 1. This device has the characteristics of simple structure, quick clamping, and reliable clamping, which can make full use of the welding material and reduce the waste of welding material.

[0014] When using the welding torch, loosen the welding torch and clamp the end of the copper tube 3 of the welding rod extension clamping device. Loosen the top cap 2 at the front end of the welding rod extension clamping device counterclockwise to open the clamping crown 1 and place the metal part of the welding rod into the clamping crown 1. Tighten the top cap 2 clockwise so that the inner conical surface of the top cap 2 fits against the conical surface of the end of the clamping crown 1. The top cap 2 drives the end of the clamping crown 1 to move towards the center. The clamping crown 1 undergoes elastic deformation under the action of the taper in both directions, and the inner diameter of the middle hole inside the clamping crown 1 contracts, thereby clamping the welding rod inside the clamping crown 1. Hold the welding torch and drive the welding rod to weld the narrow and long weld seam until the welding rod is used up. Replace with a new welding rod and start welding again.

Claims

1. A hand-held welding rod extension clamping device, characterized in that: The device includes a crown (1), a cap (2), a copper tube (3), and a thermoplastic insulating tube (4). The thermoplastic insulating tube (4) is fixedly fitted on the outside of one side of the main body of the copper tube (3), and an external thread is provided on the other side of the main body of the copper tube (3). On the side with the external thread, the inner diameter of the copper tube (3) is tapered, and a crown (1) is installed inside the copper tube (3). The crown (1) is tapered, the body of the crown (1) is elastic, and an axial intermediate hole is provided in the center of the inside of the crown (1). The end of the crown (1) is divided into four petals and evenly spaced apart. The end of the crown (1) is exposed outside the copper tube (3). On the outside of the end of the crown (1), a cap (2) is threaded on the copper tube (3), and the cap (2) includes the end of the crown (1) exposed outside the copper tube (3).

2. The extension clamp device for a welding stick according to claim 1, wherein: The end of the crown (1) is a conical surface, and the inside of the end of the top cap (2) is also a conical surface, with the two conical surfaces having the same curvature.

3. The extension holder for welding rod according to claim 1, wherein: The taper of the inner diameter of the copper tube (3) is consistent with the taper of the clamp crown (1).

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