Tube plate welding gun positioning device

Abstract

The utility model discloses a tube plate welding gun positioning device which comprises a rotating mechanism, a cam seat is arranged at the rear end of the rotating mechanism, a wrench is arranged at the rear end of the cam seat, and an eccentric bearing is arranged at the front end of the wrench. A disc spring sleeve is arranged in the cam seat, a disc spring mechanism is arranged at the rear end of the disc spring sleeve, and a pull rod base is arranged at the rear end of the disc spring mechanism. A water-cooling copper plate is arranged at the front end of the rotating mechanism, and a circular hole penetrating through the water-cooling copper plate and the rotating mechanism is formed between the water-cooling copper plate and the rotating mechanism. According to the tube plate welding gun positioning device, the disc spring mechanism in the cam seat drives the pull rod to move backwards, and the pull rod moves backwards to enable the expansion core to expand the interior of a pipeline to achieve the positioning effect; meanwhile, the copper sleeve provides support in the pipeline, and the situation that the welding gun is difficult to take out due to inward shrinkage of a welded junction during welding is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of welding guns, in particular to a tube plate welding gun positioning device. Background Art

[0002] The tube sheet welding gun is a tool designed for fully automatic TIG welding of tubes / tube sheets. It is suitable for automatic welding of general tube sheet forms. This welding gun can weld various tube / tube sheet joints made of carbon steel, stainless steel and other materials, such as tube extension, tube flush, etc., and can choose to fill wire or not fill wire to achieve the ideal welding effect.

[0003] The existing welding gun used for tube sheet welding will heat up after being used for a period of time and needs to be left for a period of time to cool down. During use, there is also the possibility that the pipe mouth is welded broken, causing the pipe to shrink inward, making it difficult to remove the welding gun positioning device. Therefore, a tube sheet welding gun positioning device is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a tube sheet welding gun positioning device, which has the advantages of cooling and preventing the weld from shrinking, and solves the problem that the existing tube sheet welding gun will heat up after being used for a period of time and needs to be placed for a period of time to cool down, and the welding gun is difficult to remove due to the shrinkage of the weld during use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tube sheet welding gun positioning device comprises a rotating mechanism, a cam seat is provided at the rear end of the rotating mechanism, a wrench is provided at the rear end of the cam seat, an eccentric bearing is provided at the front end of the wrench, and the wrench and the eccentric bearing are fixed to the rear end of the cam seat by a pin. By pulling the wrench forward or backward, the eccentric bearing is driven to rotate.

[0007] Furthermore, a disc spring sleeve is provided inside the cam seat, a disc spring mechanism is provided at the rear end of the disc spring sleeve, and a pull rod base is provided at the rear end of the disc spring mechanism. The front end of the pull rod base is connected to the pull rod, and the reciprocating motion of the pull rod is achieved through the compression and release of the disc spring structure.

[0008] Furthermore, a water-cooled copper sleeve is provided at the front end of the rotating mechanism, and the temperature of the welding gun is reduced by water circulation cooling to ensure long-term stable operation. A circular hole penetrating the water-cooled copper sleeve and the rotating mechanism is provided between the water-cooled copper sleeve and the rotating mechanism, and the push rod passes through the circular hole.

[0009] Furthermore, the push rod is a hollow structure, a pull rod is arranged inside the push rod, the rear end of the pull rod is fixed to the pull rod base, and the front end of the pull rod is threaded.

[0010] Furthermore, the push rod outer sleeve is provided with a copper sleeve, the front end of the copper sleeve is provided with a rear cone sleeve, the front end of the rear cone sleeve is provided with an expansion core, the front end of the expansion core is provided with a front cone sleeve, and the front cone sleeve can be screwed into the front end of the pull rod and fixed to the pull rod.

[0011] Furthermore, the water-cooled copper sleeve is provided with a tungsten electrode assembly for welding.

[0012] Beneficial effects of the utility model:

[0013] 1. The tube sheet welding gun positioning device cools the welding gun by means of the water-cooling copper sleeve, thereby improving the use efficiency of the welding gun and increasing the service life of the welding gun.

[0014] 2. The tube sheet welding gun positioning device drives the eccentric bearing to rotate through the wrench, causing the disc spring mechanism inside the cam seat to drive the pull rod to move backward, so that the expansion core expands to play a positioning role; at the same time, the copper sleeve provides support inside the pipeline to prevent the weld from shrinking during welding, making it difficult to remove the welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the cam seat in the structure of the utility model;

[0017] Figure 3 It is a front schematic diagram of the structure of the utility model.

[0018] In the figure: 1 front cone sleeve, 2 expansion core, 3 rear cone sleeve, 4 copper sleeve, 5 ceramic sleeve, 6 tungsten electrode assembly, 7 water-cooled copper sleeve, 8 rotating mechanism, 9 cam seat, 10 eccentric bearing, 11 wrench, 12 push rod, 13 disc spring sleeve, 14 disc spring mechanism, 15 pull rod base, 16 pull rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1-3 A tube sheet welding gun positioning device in this embodiment includes a front cone sleeve 1, an expansion core 2, a rear cone sleeve 3, a copper sleeve 4, a ceramic sleeve 5, a tungsten electrode assembly 6, a water-cooled copper sleeve 7, a rotating mechanism 8, a cam seat 9, an eccentric bearing 10, a wrench 11, a push rod 12, a disc spring sleeve 13, a disc spring mechanism 14, a pull rod base 15, and a pull rod 16.

[0021] A cam seat 9 is provided at the rear end of the rotating mechanism 8, a wrench 11 is provided at the rear end of the cam seat 9, an eccentric bearing 10 is provided at one end of the wrench 11, and the wrench 11 and the eccentric bearing 10 are fixed to the rear end of the cam seat 9 by pins.

[0022] Furthermore, a disc spring sleeve 13 is provided inside the cam seat 9 , a disc spring mechanism 14 is provided at the rear end of the disc spring sleeve 13 , and a pull rod base 15 is provided at the rear end of the disc spring mechanism 14 .

[0023] Furthermore, a water-cooled copper sleeve 7 is provided at the front end of the rotating mechanism 8, a circular hole penetrating the water-cooled copper sleeve 7 and the rotating mechanism 8 is provided between the water-cooled copper sleeve 7 and the rotating mechanism 8, and the push rod 12 passes through the circular hole.

[0024] Furthermore, the push rod 12 is a hollow structure, and a pull rod 16 is provided inside the push rod 12, and the rear end of the pull rod 16 is fixed to the pull rod base 15. The front end of the pull rod 16 is threaded.

[0025] Furthermore, the push rod 12 is covered with a ceramic sleeve 5, the front end of the ceramic sleeve 5 is provided with a copper sleeve 4, the front end of the copper sleeve 4 is provided with a rear cone sleeve 3, the front end of the rear cone sleeve 3 is provided with an expansion core 2, the front end of the expansion core 2 is provided with a front cone sleeve 1, and the front cone sleeve 1 is provided with a through threaded hole, which can be screwed into the front end of the pull rod 16 and fixed to the pull rod 16.

[0026] Furthermore, a tungsten electrode assembly 6 is provided on the water-cooled copper sleeve 7 for welding.

[0027] The working principle of the above embodiment is:

[0028] When the operator pulls the wrench 11 forward, the eccentric bearing 10 rotates, and the disc spring mechanism 14 inside the cam seat 9 drives the pull rod 16 to move backward. The backward movement of the pull rod 16 causes the expansion core 2 to expand and expand the inside of the pipe. At the same time, the copper sleeve 4 provides support inside the pipe to prevent the weld from shrinking during welding, making it difficult to remove the welding gun. The water-cooled copper sleeve 7 reduces the temperature of the welding gun through water circulation cooling, ensuring long-term stable operation.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tube sheet welding gun positioning device, characterized in that: It comprises a front cone sleeve (1), an expansion core (2), a rear cone sleeve (3), a copper sleeve (4), a ceramic sleeve (5), a tungsten electrode assembly (6), a water-cooled copper sleeve (7), a rotating mechanism (8), a cam seat (9), an eccentric bearing (10), a wrench (11), a push rod (12), a disc spring sleeve (13), a disc spring mechanism (14), a pull rod base (15), and a pull rod (16); A cam seat (9) is provided at the rear end of the rotating mechanism (8), a wrench (11) is provided at the rear end of the cam seat (9), an eccentric bearing (10) is provided at one end of the wrench (11), and the wrench (11) and the eccentric bearing (10) are fixed to the rear end of the cam seat (9) by a pin.

2. A tube sheet welding gun positioning device according to claim 1, characterized in that: A disc spring sleeve (13) is provided inside the cam seat (9), a disc spring mechanism (14) is provided at the rear end of the disc spring sleeve (13), and a pull rod base (15) is provided at the rear end of the disc spring mechanism (14).

3. A tube sheet welding gun positioning device according to claim 2, characterized in that: A water-cooling copper sleeve (7) is provided at the front end of the rotating mechanism (8), a circular hole penetrating the water-cooling copper sleeve (7) and the rotating mechanism (8) is provided between the water-cooling copper sleeve (7) and the rotating mechanism (8), and the push rod (12) penetrates the circular hole.

4. A tube sheet welding gun positioning device according to claim 3, characterized in that: The push rod (12) is a hollow structure. A pull rod (16) is provided inside the push rod (12). The rear end of the pull rod (16) is fixed to the pull rod base (15), and the front end of the pull rod (16) is threaded.

5. A tube sheet welding gun positioning device according to claim 4, characterized in that: The push rod (12) is covered with a ceramic sleeve (5), the front end of the ceramic sleeve (5) is provided with a copper sleeve (4), the front end of the copper sleeve (4) is provided with a rear cone sleeve (3), the front end of the rear cone sleeve (3) is provided with an expansion core (2), the front end of the expansion core (2) is provided with a front cone sleeve (1), and the front cone sleeve (1) is provided with a through threaded hole, which can be screwed into the front end of the pull rod (16) and fixed to the pull rod (16).

6. A tube sheet welding gun positioning device according to claim 5, characterized in that: The water-cooled copper sleeve (7) is provided with a tungsten pole assembly (6).

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