Tube plate grabbing device of tube expander

Abstract

The utility model discloses a tube plate gripping device of a tube expander, which comprises a mounting rack and a rotating shaft rotatably mounted on the mounting rack, a swing frame swinging along with the rotating shaft is arranged on the rotating shaft, a gripping plate is connected to the swing frame, a group of suction structures are arranged on the gripping plate, and the suction structures are arranged on the swing frame. And at least two guide convex dies acting in the expansion hole of the tube plate are also arranged. The tube plate clamping device can automatically clamp the tube plate, the position of the tube plate can be adjusted during clamping, automatic assembly of the tube plate can be conveniently achieved, and the tube plate clamping device can be widely applied to the field of assembly of two devices (a condenser and a heat exchanger).

Description

Technical Field

[0001] The utility model relates to the field of tube expanders, in particular to a tube plate grabbing device of a tube expander. Background Art

[0002] When the tube expander expands the tubes of two devices (condenser and heat exchanger), it includes loading, expanding, flaring and unloading processes. In the existing equipment, loading is done manually. After the fins and copper tubes are assembled manually, the tube sheet is manually installed on the top of the fins before expanding the tubes. With the improvement of automation, manual tube sheet loading not only hinders the automation of tube expansion processing, but also has high labor costs. Therefore, it is necessary to develop a tube sheet grabbing device that can correctly grab the tube sheet and adjust the angle of the tube sheet, thereby providing favorable conditions for the automatic assembly of the tube sheet. Utility Model Content

[0003] The utility model aims to provide a tube sheet grabbing device for a tube expander, which solves the problem that the existing tube sheet assembly relies on manual picking and placing, has a low degree of automation and high cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a tube sheet grabbing device for a tube expander, comprising a mounting frame, a rotating shaft rotatably mounted on the mounting frame, a swinging frame that swings with the rotating shaft is arranged on the rotating shaft, a grabbing plate is connected to the swinging frame, a group of material suction structures are arranged on the grabbing plate, and at least two guiding punches acting on the expansion holes of the tube sheet are also arranged.

[0005] Preferably, the material suction structure is an electromagnet or a negative pressure suction cylinder.

[0006] To facilitate controlling the angle of the swing frame, a driven gear is provided at one end of the rotating shaft, a rotating shaft driving motor is provided on the mounting frame, a driving gear is provided on the driving shaft of the rotating shaft driving motor, and the driving gear and the driven gear are meshed with each other or connected by a synchronous chain.

[0007] In order to facilitate the control of the pressure exerted by the grab plate on the tube plate during grabbing, two guide pillars are arranged on the grab plate, and a guide sleeve cooperating with the guide pillar is arranged on the swing frame. A limit block is arranged at one end of the guide pillar extending out of the swing frame to prevent the guide pillar from escaping from the guide sleeve. A spring is also sleeved on the guide pillar, and the two ends of the spring act on the swing frame and the grab plate respectively.

[0008] Beneficial effects of the utility model: The utility model drives the swing frame to swing through the rotating shaft, so that the grab plate arranged under the swing frame can swing to any angle, which is used to grab the tube sheet and then swing to the correct angle and position. At the same time, the grab plate adopts an electromagnet or a negative pressure suction structure, which is not only convenient for suction, but also convenient for loosening the tube sheet. The guiding punch on the grab plate extends into the expansion hole of the tube sheet when grabbing the tube sheet, so as to adjust the position of the tube sheet and avoid skewing. The matching structure of the guide column and the guide sleeve, combined with the spring, makes it possible for the spring to be compressed when the pressure exerted by the grab plate on the tube sheet is greater than the set value threshold, and the grab plate moves in the direction of the swing frame, thereby reducing the pressure on the tube sheet and avoiding the tube sheet from being deformed by pressure. Therefore, through the utility model, the automatic grabbing and position adjustment of the tube sheet can be realized, and the automatic assembly of the tube sheet can be conveniently realized.

[0009] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0011] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0012] Figure 3 It is the front view of the guiding punch in the utility model.

[0013] Figure 4 It is the front view of the utility model.

[0014] Figure 5 It is a distribution diagram of the material suction structure and the guiding punch in the utility model. DETAILED DESCRIPTION

[0015] Examples, such as Figures 1 to 5 As shown, a tube sheet grabbing device for a tube expander includes a mounting frame 1, a rotating shaft 2 rotatably mounted on the mounting frame 1, a swing frame 3 swinging with the rotating shaft 2 is provided on the rotating shaft 2, a grab plate 4 is connected to the swing frame 3, and the tube sheet 100 is grabbed by the grab plate 4 and the position of the tube sheet 100 is adjusted.

[0016] Specifically, a driven gear 7 is provided at one end of the rotating shaft 2, a rotating shaft driving motor 8 is provided on the mounting frame 1, and a driving gear 9 is provided on the driving shaft of the rotating shaft driving motor 8. The driving gear 9 and the driven gear 7 are connected by a synchronous chain 11, and can also be meshed with each other or other transmission structures. The rotating shaft 2 is driven to rotate by the rotating shaft driving motor 8, so that the swing frame 3 swings. In order to facilitate the grabbing and putting down of the tube sheet 100, a group of suction structures 5 are provided on the grab plate 4. The suction structure 5 preferably adopts an electromagnet or a negative pressure suction cylinder. The suction structure 5 can adjust the size and arrange the position according to the structure of the tube sheet 100 to ensure the reliability of grabbing. In order to ensure that the tube sheet 100 is grabbed at a set angle and avoid the tube sheet 100 from being skewed, which affects the assembly of the subsequent process, at least two guiding punches 6 acting on the expansion hole of the tube sheet 100 are provided on the grab plate 4. The front end of the pilot punch 6 is provided with a conical portion 61 for convenient insertion into the expansion hole, and a limiting step 62 is also provided, and the depth of the pilot punch 6 entering the expansion hole of the tube sheet is limited by the limiting step 62. The length of the pilot punch 6 is greater than the length of the suction structure 5. When grabbing the tube sheet 100, the pilot punch 6 is first inserted into the expansion hole to adjust the position of the tube sheet 100, and then the suction structure 5 is started to complete the grabbing.

[0017] In order to prevent the grab plate from crushing the tube sheet, two guide posts 41 are provided on the grab plate 4, and a guide sleeve 31 cooperating with the guide posts 41 is provided on the swing frame 3. A stop block 42 is provided at one end of the guide post 41 extending out of the swing frame 3 to prevent the guide post 41 from being separated from the guide sleeve 31. A spring 10 is also sleeved on the guide post 41, and the two ends of the spring 10 act on the swing frame 3 and the grab plate 4 respectively. When the force exerted by the suction structure 5 on the grab plate 4 on the tube sheet 100 exceeds the set value, the spring 10 will be compressed, and the grab plate 4 will move upward as a whole, thereby reducing the force exerted on the tube sheet 100, so that the force exerted by the grab plate 4 on the tube sheet 100 is always kept within the set range.

[0018] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A tube sheet grabbing device for a tube expander, characterized in that: The invention comprises a mounting frame (1), a rotating shaft (2) rotatably mounted on the mounting frame (1), a swinging frame (3) swinging with the rotating shaft (2) being arranged on the rotating shaft (2), a material grabbing plate (4) being connected to the swinging frame (3), a group of material suction structures (5) being arranged on the material grabbing plate (4), and at least two guiding convex molds (6) acting on the expansion holes of the tube sheet being arranged.

2. The tube sheet grabbing device for a tube expander according to claim 1, characterized in that: The material suction structure (5) is an electromagnet or a negative pressure material suction cylinder.

3. The tube sheet grabbing device of the tube expander according to claim 1, characterized in that: A driven gear (7) is arranged at one end of the rotating shaft (2), a rotating shaft driving motor (8) is arranged on the mounting frame (1), a driving gear (9) is arranged on the driving shaft of the rotating shaft driving motor (8), and the driving gear (9) and the driven gear (7) are meshed with each other or connected by a synchronous chain.

4. The tube sheet grabbing device for a tube expander according to claim 1, characterized in that: The grab plate (4) is provided with two guide posts (41), the swing frame (3) is provided with a guide sleeve (31) matched with the guide post (41), one end of the guide post (41) extending out of the swing frame (3) is provided with a limit block (42) for preventing the guide post (41) from escaping from the guide sleeve (31), and the guide post (41) is also sleeved with a spring (10), the two ends of the spring (10) respectively acting on the swing frame (3) and the grab plate (4).

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