Heat exchange tube welding clamp

Abstract

The utility model discloses a heat exchange tube welding fixture, and relates to the technical field of heat exchange tube processing assistive devices, the heat exchange tube welding fixture comprises a workbench, two groups of fixing structures are oppositely arranged on the workbench, each group of fixing structures comprises two groups of limiting assemblies, each group of limiting assemblies comprises a vertical plate, a fixed cylinder, a sliding cylinder and a plurality of flexible metal strips, the vertical plate is arranged on the workbench, the fixed cylinder is arranged on the vertical plate in a penetrating mode, and the sliding cylinder comprises a sliding cylinder straight cylinder part and a sliding cylinder conical cylinder part; the flexible metal strips are deformed when the sliding cylinder conical cylinder part moves, the flexible metal strips abut against the heat exchange tubes between the flexible metal strips to fix the heat exchange tubes with different tube diameters, the sliding cylinder conical cylinder part drives the flexible metal strips to move synchronously, the heat exchange tubes can be located in the center of the sliding cylinder conical cylinder part, and therefore the heat exchange tubes with different tube diameters can be fixed. And the axes of the heat exchange tubes on the two sides are aligned.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange tube processing aids, and particularly relates to a heat exchange tube welding fixture. Background Technique

[0002] The heat exchange tube is one of the components of the heat exchanger, which is placed inside the cylinder body and used for heat exchange between two media. The heat exchange tube has high thermal conductivity and good isothermal property. It is a device that can quickly transfer heat energy from one point to another point with almost no heat loss.

[0003] When welding two heat exchange tubes, a fixture is needed for fixation. Currently, the existing fixture is not convenient for aligning the axes of the two heat exchange tubes, and it is not applicable to the fixation of heat exchange tubes with different diameters, resulting in poor applicability. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a heat exchange tube welding fixture. When the conical part of the sliding cylinder moves, it deforms multiple flexible metal strips, enabling the multiple flexible metal strips to abut against the heat exchange tubes therebetween to fix heat exchange tubes with different diameters. The conical part of the sliding cylinder drives the multiple flexible metal strips to move synchronously, enabling the heat exchange tubes to be located at the central position of the conical part of the sliding cylinder, thereby aligning the axes of the heat exchange tubes on both sides.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A heat exchange tube welding fixture includes a workbench, and two groups of fixing structures are oppositely arranged on the workbench. Each group of fixing structures includes two groups of limiting components. Each group of limiting components includes a vertical plate, a fixed cylinder, a sliding cylinder, and multiple flexible metal strips. The vertical plate is arranged on the workbench. The fixed cylinder is penetratively arranged on the vertical plate. The sliding cylinder includes a straight cylinder part and a conical cylinder part of the sliding cylinder. The straight cylinder part of the sliding cylinder is sleeved and slidably arranged on the outer wall of the fixed cylinder. The multiple flexible metal strips are arranged on the fixed cylinder. The conical cylinder part of the sliding cylinder can abut against the multiple flexible metal strips and can deform the multiple flexible metal strips. Two groups of driving components capable of driving the sliding cylinder to move are arranged on the workbench.

[0006] Preferably, each group of driving components includes a cylinder, a transmission rod, and two connecting rods. The cylinder is arranged on the workbench. The transmission rod is arranged at the telescopic end of the cylinder. A through hole is opened on the vertical plate. The transmission rod penetrates through the through hole. One end of each connecting rod is connected to the transmission rod, and the other end is connected to the sliding cylinder.

[0007] Preferably, a pair of sliding grooves are opened on the outer wall of the fixed cylinder. A pair of sliding blocks are arranged on the inner wall of the straight cylinder part of the sliding cylinder. The pair of sliding blocks are horizontally slidably arranged in the pair of sliding grooves.

[0008] The utility model provides a heat exchange tube welding fixture, which has the following beneficial effects:

[0009] 1. When the conical part of the sliding cylinder of the utility model moves, it deforms a plurality of flexible metal strips, so that the plurality of flexible metal strips abut against the heat exchange tubes therebetween to fix heat exchange tubes with different diameters. The conical part of the sliding cylinder drives the plurality of flexible metal strips to move synchronously, so that the heat exchange tubes can be located at the center position of the conical part of the sliding cylinder, and further align the axes of the heat exchange tubes on both sides.

[0010] 2. The telescopic end of the cylinder of the utility model drives the connected transmission rod to move, the transmission rod drives the connected connecting rod to move, and the connecting rod drives the connected sliding cylinder to move; a pair of sliders are slidably arranged in a pair of chutes, and the pair of chutes limit the pair of sliders to prevent the sliders from shifting during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the utility model;

[0012] Figure 2 is the utility model Figure 1 an enlarged view of part A in.

[0013] In the figure: 1, workbench; 2, vertical plate; 2-1, through hole; 3, fixed cylinder; 3-1, chute; 4, sliding cylinder; 4-1, slider; 4-2, straight cylinder part of the sliding cylinder; 4-3, conical cylinder part of the sliding cylinder; 5, flexible metal strip; 6, cylinder; 7, transmission rod; 8, connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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.

[0015] Please refer to Figure 1-2, the present utility model provides a technical solution: a heat exchange tube welding fixture, including a workbench 1, on which two groups of fixing structures are oppositely arranged. Each group of fixing structures includes two groups of limiting components. Each group of limiting components includes a vertical plate 2, a fixed cylinder 3, a sliding cylinder 4 and a plurality of flexible metal strips 5. The vertical plate 2 is arranged on the workbench 1, the fixed cylinder 3 is arranged through the vertical plate 2, the sliding cylinder 4 includes a sliding cylinder straight cylinder part 4-2 and a sliding cylinder conical cylinder part 4-3. The sliding cylinder straight cylinder part 4-2 is sleeved and slidably arranged on the outer wall of the fixed cylinder 3. A plurality of flexible metal strips 5 are arranged on the fixed cylinder 3. The sliding cylinder conical cylinder part 4-3 can abut against the plurality of flexible metal strips 5 and can cause the plurality of flexible metal strips 5 to deform. On the workbench 1, two groups of driving components capable of driving the sliding cylinder 4 to move are arranged.

[0016] In this embodiment, the driving component is used to drive each sliding cylinder straight cylinder part 4-2 to slide on the fixed cylinder 3, so that the sliding cylinder straight cylinder part 4-2 moves towards the corresponding vertical plate 2. When the sliding cylinder conical cylinder part 4-3 moves, it causes the plurality of flexible metal strips 5 to deform, so that the plurality of flexible metal strips 5 abut against the heat exchange tube therebetween to fix heat exchange tubes with different diameters. The sliding cylinder conical cylinder part 4-3 drives the plurality of flexible metal strips 5 to move synchronously, so that the heat exchange tube can be located at the center position of the sliding cylinder conical cylinder part 4-3, and further aligns the axes of the heat exchange tubes on both sides.

[0017] As an embodiment of the present utility model, each group of driving components includes a cylinder 6, a transmission rod 7 and two connecting rods 8. The cylinder 6 is arranged on the workbench 1, the transmission rod 7 is arranged at the telescopic end of the cylinder 6. A through hole 2-1 is opened on the vertical plate 2, and the transmission rod 7 passes through the through hole 2-1. One end of each connecting rod 8 is connected to the transmission rod 7, and the other end is connected to the sliding cylinder 4.

[0018] In this embodiment, the telescopic end of the cylinder 6 drives the connected transmission rod 7 to move, the transmission rod 7 drives the connected connecting rod 8 to move, and the connecting rod 8 drives the connected sliding cylinder 4 to move.

[0019] As an embodiment of the present utility model, a pair of sliding grooves 3-1 are opened on the outer wall of the fixed cylinder 3, and a pair of sliding blocks 4-1 are arranged on the inner wall of the sliding cylinder straight cylinder part 4-2. The pair of sliding blocks 4-1 are horizontally slidably arranged in the pair of sliding grooves 3-1.

[0020] In this embodiment, the pair of sliding blocks 4-1 are slidably arranged in the pair of sliding grooves 3-1, and the pair of sliding grooves 3-1 limit the pair of sliding blocks 4-1 to prevent the sliding blocks 4-1 from shifting during movement.

[0021] Persons skilled in the art shall connect all the electrical components in this case to their adapted power sources through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the working sequence among the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be given.

[0022] Working principle and usage process of the present utility model: When in use, a pair of heat exchange tubes are relatively installed on two sets of fixed structures. Specifically, each heat exchange tube is passed through a pair of fixed cylinders 3, and the heat exchange tube is located between a plurality of flexible metal strips 5. Then, the cylinder 6 arranged on the workbench 1 is started. The telescopic end of the cylinder 6 contracts, and the telescopic end of the cylinder 6 drives the connected transmission rod 7 to move. The transmission rod 7 drives a pair of connecting rods 8 to move, and a pair of connecting rods 8 drive a pair of sliding cylinders 4 to move. When the conical part 4-2 of the sliding cylinder abuts against a plurality of flexible metal strips 5, the flexible metal strips 5 are deformed, and then the flexible metal strips 5 abut against the heat exchange tubes, thereby quickly fixing the heat exchange tubes.

[0023] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood 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 heat exchange tube welding fixture, comprising a workbench (1), characterized in that, There are two sets of fixed structures oppositely arranged on the workbench (1). Each set of the fixed structures includes two sets of limiting components. Each set of the limiting components includes a vertical plate (2), a fixed cylinder (3), a sliding cylinder (4), and a plurality of flexible metal strips (5). The vertical plate (2) is arranged on the workbench (1). The fixed cylinder (3) is arranged through the vertical plate (2). The sliding cylinder (4) includes a sliding cylinder straight cylinder part (4-2) and a sliding cylinder conical cylinder part (4-3). The sliding cylinder straight cylinder part (4-2) is sleeved and slidably arranged on the outer wall of the fixed cylinder (3). The plurality of flexible metal strips (5) are arranged on the fixed cylinder (3). The sliding cylinder conical cylinder part (4-3) can abut against the plurality of flexible metal strips (5) and can deform the plurality of flexible metal strips (5). There are two sets of driving components arranged on the workbench (1) that can drive the sliding cylinder (4) to move.

2. The heat exchange tube welding jig according to claim 1, characterized in that, Each set of the driving components includes a cylinder (6), a transmission rod (7), and two connecting rods (8). The cylinder (6) is arranged on the workbench (1). The transmission rod (7) is arranged at the telescopic end of the cylinder (6). A through hole (2-1) is formed in the vertical plate (2). The transmission rod (7) passes through the through hole (2-1). One end of each connecting rod (8) is connected to the transmission rod (7), and the other end is connected to the sliding cylinder (4).

3. The heat exchange tube welding fixture according to claim 1, characterized in that, A pair of sliding grooves (3-1) are formed on the outer wall of the fixed cylinder (3). A pair of sliding blocks (4-1) are arranged on the inner wall of the sliding cylinder straight cylinder part. The pair of sliding blocks (4-1) are horizontally slidably arranged in the pair of sliding grooves (3-1).

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