Adjustable welding gun fixing device and welding device applying same

Abstract

The utility model relates to the field of submerged arc welding, and discloses an adjustable welding gun fixing device and a welding device applying the same. The welding gun fixing device comprises a connecting frame, a guide rod fixedly installed on the connecting frame, a plurality of double-end holding clamps vertically arranged on the guide rod and a plurality of welding gun holding clamps horizontally arranged on the double-end holding clamps and used for installing welding guns. The holding clamp at one end of the double-end holding clamp is movably clamped on the guide rod and is fixed through a first screw, the holding clamp at the other end of the double-end holding clamp is clamped on the connecting shaft of the welding gun holding clamp and is fixed through a second screw, and the welding gun is clamped in the welding gun holding clamp and is fixed through a third screw. According to the welding gun adjusting mechanism, the adjusting flexibility of the welding gun is greatly improved, the adjusting effect of the welding gun adjusting mechanism is better than that of a traditional lead screw adjusting mechanism, the structure is simpler, the space size and the manufacturing cost are saved, and enough radial space is provided for adjusting when the welding gun is centered with a welding seam.

Description

Technical Field

[0001] The utility model relates to the field of submerged arc welding, in particular to an adjustable welding torch fixing device and a welding device using the same, which are suitable for welding the inner wall welds of steel pipes. Background Art

[0002] In the production process of longitudinally submerged arc welded pipes, the reliability of the inner wall welding of steel pipes has a great influence on subsequent processes such as external welding, expanding diameter, straightening, and hydrostatic testing.

[0003] Currently, the adjustment of the welding torch for welding the inner welds of steel pipes on the market mainly relies on the screw rod and nut and slider mechanism. This adjustment device has defects such as large space occupation, inconvenient radial adjustment, and complex structure, which is not conducive to equipment maintenance, directly affecting the welding quality.

[0004] Based on this, the present application provides an adjustable welding torch fixing device and a welding device using the same, which have small space occupation, convenient adjustment, and simple structure, facilitating equipment maintenance, to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the technical problems existing in the prior art. For this purpose, the utility model provides an adjustable welding torch fixing device and a welding device using the same, which have small space occupation, convenient adjustment, and simple structure, facilitating equipment maintenance.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] In the first aspect, an adjustable welding torch fixing device is provided, which includes a connecting frame, a guiding rod fixedly installed on the connecting frame, a plurality of double-headed clamps vertically arranged on the guiding rod, and a plurality of welding torch clamps horizontally arranged on the double-headed clamps for installing the welding torch; one end of the double-headed clamp is movably clamped on the guiding rod and fixed by a first screw, the other end of the clamp is clamped on the connecting shaft of the welding torch clamp and fixed by a second screw, and the welding torch is clamped in the welding torch clamp and fixed by a third screw.

[0008] In a preferred embodiment, the connecting frame includes a channel-shaped bracket and two parallel support plates arranged on the back of the channel-shaped bracket. The right end of the channel-shaped bracket is connected to the cantilever of the internal welding machine, and its left end is connected to the bottom plate of the flux recovery device. The two ends of the guiding rod are fixedly installed on the two support plates.

[0009] In a preferred embodiment, the connecting frame further includes a top cover plate arranged on the top of the channel-shaped bracket, and the two ends of the cover plate are fixedly connected to the two support plates.

[0010] In a preferred embodiment, the support plate is provided with mounting holes for mounting guide rods, and a guide key penetrating the center position of the mounting holes is further provided on the outer side of the support plate. Key grooves adapted to the guide key are provided at both ends of the guide rod.

[0011] In a preferred embodiment, a bushing is further provided on the guide rod at the assembly position with the mounting hole.

[0012] In a preferred embodiment, one end of the welding torch clamp away from the double-headed clamp is arranged on the front surface of the channel-shaped bracket.

[0013] In a second aspect, a welding device is provided, which uses the adjustable welding torch fixing device described in the above embodiment to fix the welding torch. Preferably, the welding device is an internal welding machine.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model is provided with a double-headed clamp between the guide rod and the welding torch clamp, which can meet the adjustment of the distance between welding torches, the adjustment of the perpendicularity of the welding torch, the adjustment of the front and rear positions of the welding torch, and the adjustment of the deflection angle of the welding torch, greatly improving the flexibility of the welding torch adjustment. Its adjustment effect is better than that of the traditional lead screw adjustment mechanism, and the structure is simpler, saving space size and manufacturing cost, so that the welding torch has sufficient radial space for adjustment when aligning with the weld seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0017] Figure 1 is the front three-dimensional structure diagram of the adjustable welding torch fixing device provided by the present utility model;

[0018] Figure 2 is the back three-dimensional structure diagram of the adjustable welding torch fixing device provided by the present utility model.

[0019] In the drawings, the list of components represented by each reference numeral is as follows:

[0020] 1 - connecting frame, 1.1 - channel-shaped bracket, 1.2 - support plate, 1.3 - cover plate, 2 - guide rod, 3 - double-headed clamp, 4 - welding torch clamp, 5 - guide key, 6 - bushing, 7 - first screw, 8 - second screw, 9 - third screw, 10 - welding torch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In addition, the descriptions involving the terms "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. The terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0026] Embodiment 1

[0027] This embodiment provides an adjustable welding torch fixing device, including a connecting frame 1, a guide rod 2, a double-headed clamp 3, and a welding torch clamp 4, where:

[0028] The connecting frame 1 includes a channel-shaped bracket 1.1 and two parallel support plates 1.2 provided on the back of the channel-shaped bracket 1.1. The right end of the channel-shaped bracket is provided with an oblong hole for connecting with the cantilever of the internal welding machine, and its left end is provided with a screw hole for connecting with the bottom plate of the flux recovery device.

[0029] Preferably, the connecting frame 1 further includes a cover plate 1.3, and the cover plate 1.3 is provided on the top of the channel-shaped bracket 1.1 and is fixedly connected to the channel-shaped bracket 1.1 and the two support plates 1.2. The cover plate in this embodiment serves as a protective plate and can protect the components between the cover plates.

[0030] Both ends of the guide rod 2 are fixedly installed on the two support plates 1.2. In this embodiment, the preferred fixed installation method is as follows: the support plate 1.2 is provided with an installation hole, and a guide key 5 penetrating the center position of the installation hole is further provided on the outside of the support plate. Both ends of the guide rod 2 are provided with key grooves matching the guide key 5. During specific installation, the guide rod is inserted from one end of the support plate (the guide key of this support plate is removed), until the key groove of the guide rod is buckled with the guide key of the other end of the support plate, and then the guide key of the inserted end of the support plate is installed in place, thus realizing the position fixation of the guide rod.

[0031] Preferably, a bushing 6 is further provided on the guide rod 2 at the assembly position with the installation hole. The setting of the bushing in this embodiment, as a wearing part, can prevent the wear of the guide rod or the installation hole of the support plate during equipment maintenance and equipment operation (wear will affect the welding accuracy), so that it is not necessary to replace the guide rod or the support plate, reducing the equipment maintenance cost.

[0032] A plurality of the double-headed clamps 3 are vertically arranged on the guide rod 2, a plurality of torch clamps 4 are horizontally arranged on the double-headed clamps 3, and the torch 10 is installed on the torch clamps 4. Specifically: one end of the double-headed clamp 3 is movably clamped on the guide rod 2 and fixed by the first screw 7, the other end of the clamp is clamped on the connecting shaft of the torch clamp 4 and fixed by the second screw 8, the torch 10 is clamped in the torch clamp 4 and fixed by the third screw 9, and the end of the torch clamp 4 away from the double-headed clamp 3 is arranged on the front of the channel-shaped bracket 1.1.

[0033] The torch adjustment principle is as follows:

[0034] After the steel pipe enters the cantilever of the internal welding machine, loosen the first screw. At this time, the double-headed clamp can move along the length direction of the guide rod, so that the distance between the torches can be adjusted by the axial movement of the double-headed clamp; at the same time, the double-headed clamp can also rotate circumferentially around the guide rod to make the center line of the torch and the center line of the steel pipe weld perpendicular to each other. After adjustment, lock the first screw. Through the above adjustment, the distance between the torches in the axial direction of the guide rod and the perpendicularity in the radial direction both meet the process parameter requirements.

[0035] After the above adjustment, loosen the second screw. At this time, the torch clamp can move back and forth along its axial center line to align the contact tip on the torch with the center line of the steel pipe weld. At the same time, the torch clamp can rotate in its axial direction to adjust the torch center line and the steel pipe weld center line to form different angles. After adjustment, lock the second screw. Through the above adjustment, the torch and the steel pipe weld coincide in the radial section, and the included angle between the torch center line and the weld center line in the axial section meets the process parameter requirements.

[0036] Application Example 1

[0037] Provide a welding device, which uses the adjustable torch fixing device described in Embodiment 1 to fix the torch. The welding device can be an internal welder to meet the welding of the inner wall weld of the steel pipe.

[0038] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. An adjustable welding torch fixing device, characterized in that: It includes a connecting frame, a guide rod fixedly installed on the connecting frame, a plurality of double-headed clamps vertically arranged on the guide rod, and a plurality of torch clamps horizontally arranged on the double-headed clamps for installing torches. One clamp at one end of the double-headed clamp is movably clamped on the guide rod and fixed by a first screw, and the other clamp at the other end is clamped on the connecting shaft of the torch clamp and fixed by a second screw. The torch is clamped in the torch clamp and fixed by a third screw.

2. The adjustable welding torch fixing device according to claim 1, characterized in that: The connecting frame includes a channel-shaped bracket and two parallel support plates arranged on the back of the channel-shaped bracket. The right end of the channel-shaped bracket is connected to the cantilever of the internal welder, and its left end is connected to the bottom plate of the flux recovery device. The two ends of the guide rod are fixedly installed on the two support plates.

3. The adjustable welding torch fixing device according to claim 2, wherein: The connecting frame further includes a top cover plate arranged on the top of the channel-shaped bracket, and the two ends of the cover plate are fixedly connected to the two support plates.

4. The adjustable welding torch fixing device according to claim 2, characterized in that: The support plate is provided with mounting holes for installing the guide rod, and a guide key penetrating the center position of the mounting hole is further arranged on the outside of the support plate. Key grooves matching the guide key are arranged at both ends of the guide rod.

5. The adjustable welding torch fixing device according to claim 4, characterized in that: Sleeves are also arranged on the guide rod at the assembly positions corresponding to the mounting holes.

6. The adjustable welding torch fixing device according to claim 2, characterized in that: One end of the torch clamp away from the double-headed clamp is arranged on the front of the channel-shaped bracket.

7. A welding device, characterized in that: The adjustable torch fixing device according to any one of claims 1 to 6 is used to fix the torch.

8. The welding device according to claim 7, characterized in that: The welding device is an internal welder.

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