A composite spiral blade rolling device

Abstract

This utility model relates to the technical field of spiral finned tube rolling equipment, and discloses a composite spiral finned tube rolling device, including a support device and a center positioning device for fitting steel and aluminum tubes together. The center positioning device is mounted on the support device. The center positioning device includes a fixed base, a center positioning support block, limiting blocks symmetrically arranged on both sides of the center positioning support block, a connecting plate, a shaft, and a drive rod. The center positioning support block is located on the top of the fixed base, and the connecting plate is symmetrically connected to the bottom of the limiting blocks on both sides of the center positioning support block. Each connecting plate is rotatably connected to the fixed base via a shaft on the side closest to the limiting block. Drive guide wheels are connected to both ends of the drive rod, and the outer wall of the drive guide wheel is slidably connected to the inner wall below the connecting plate. This application can accurately achieve center alignment of the steel and aluminum tubes, avoiding the situation where the steel tube is inserted at an angle and scratches the inner wall of the aluminum tube during manual tube insertion, thus ensuring the heat exchange efficiency of the composite spiral finned tube.

Description

Technical Field

[0001] This utility model relates to the technical field of spiral tube rolling equipment, specifically a composite spiral tube rolling device. Background Technology

[0002] In the energy, chemical, and refrigeration industries, heat exchange equipment is the core of energy transfer, and its performance determines the system's operating efficiency and energy consumption. Composite spiral finned tubes, due to their ability to significantly increase the heat exchange area and balance corrosion resistance and thermal conductivity, have become key components for improving the performance of heat exchange equipment and are widely used in equipment such as boiler heat exchangers and air conditioning condensers.

[0003] With increasing industrial demands for heat exchange efficiency and the advancement of energy conservation and emission reduction policies, the demand for composite spiral finned tubes is growing in tandem with the requirements for production efficiency and quality. The core of its production is the rolling process: first, an aluminum tube is fitted over a steel tube to form a composite base tube; then, the aluminum tube is extruded using rolling equipment and finned using cutting tools; finally, surface treatment is performed.

[0004] However, in current production, the fitting (pipe threading) of aluminum tubes and steel tubes relies on manual labor, which presents significant problems: First, manual pipe threading makes it difficult to accurately align the tube center, and the steel tube is prone to being inserted at an angle, scratching the inner wall of the aluminum tube and compromising the fitting accuracy; Second, damage to the inner wall of the aluminum tube will lead to uneven tube fitting during subsequent rolling, which will affect heat exchange efficiency, reduce the stability of the finned tube structure, shorten its lifespan, and increase maintenance costs; Third, manual pipe threading is inefficient and labor-intensive, and the accuracy and efficiency will further decline after the workers become fatigued. Moreover, the existing rolling equipment lacks a pipe threading auxiliary mechanism, which limits automated and large-scale production.

[0005] Therefore, we propose a composite spiral blade rolling device to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a composite spiral finned tube rolling device to solve the problems mentioned in the background art, which currently rely on manual labor for the fitting of aluminum tubes and steel tubes. Manual tube insertion has low accuracy, the steel tube is easily inserted at an angle, scratching the inner wall of the aluminum tube, affecting heat exchange efficiency, reducing the structural stability of the finned tube, shortening its lifespan, and increasing maintenance costs.

[0007] This utility model provides the following technical solution:

[0008] A composite spiral lamellar tube rolling device includes a support device and a center positioning device for fitting steel tubes and aluminum tubes together. The center positioning device is mounted on the support device. The center positioning device includes a fixed base, a center positioning support block, limiting blocks symmetrically arranged on both sides of the center positioning support block, a connecting plate, a shaft, and a drive rod. The center positioning support block is located on the top of the fixed base. The connecting plates are symmetrically connected to the bottom of the limiting blocks on both sides of the center positioning support block. Each connecting plate is rotatably connected to the fixed base via a shaft on the side closest to the limiting block. The drive rod has a cross-shaped structure and is located inside the fixed base between the two connecting plates. Drive guide wheels are connected to both ends of the drive rod. The outer wall of the drive guide wheel is slidably connected to the inner wall below the connecting plate. The top of the drive rod passes through the fixed base and is connected to the bottom of the center positioning support block.

[0009] Preferably, the support device includes a support frame arranged in a symmetrical structure, the support frame being H-shaped; the top inner walls of the two support frames are connected by symmetrically arranged support crossbars, the two ends of the two support crossbars are connected by C-shaped connecting rods, the two support crossbars and the connecting rods together constitute a placement rack for placing steel pipes and aluminum pipes; a support seat is provided on the support frame located at the bottom between the two support crossbars, and a central positioning telescopic rod is provided inside the support seat.

[0010] Preferably, the central positioning device is distributed on each of the support seats, and the bottom of the fixed seat is fixed to the top of the support seat, and the top of the central positioning telescopic rod passes through the support seat and is connected to the bottom of the drive rod.

[0011] Preferably, the top of the central positioning support block is provided with an arc-shaped positioning groove for center positioning of the steel pipe and aluminum pipe.

[0012] Preferably, the limiting block has a limiting surface on the side near the central positioning support block, and a protective silicone pad is attached to the outer wall of the limiting surface.

[0013] Preferably, the central positioning telescopic rod is an electric telescopic rod, and the telescopic action of the central positioning telescopic rod is controlled by an external controller.

[0014] This utility model has the following beneficial effects:

[0015] 1. This application, through the cooperation of the arc-shaped positioning groove and the limiting block of the center positioning device, can accurately achieve the center alignment of the steel pipe and the aluminum pipe, avoiding the situation where the steel pipe is inserted at an angle and scratches the inner wall of the aluminum pipe when manually threading the pipe, ensuring that the pipe body fits evenly during subsequent rolling, guaranteeing the heat exchange efficiency of the composite spiral finned tube, while improving the structural stability of the finned tube, extending its service life, and reducing maintenance costs and safety risks in industrial production.

[0016] 2. By utilizing the central positioning telescopic rod in conjunction with the arc-shaped positioning groove and the limiting block, the central positioning operation before the steel pipe and aluminum pipe are fitted together can be automatically completed. After the steel pipe and aluminum pipe are centrally positioned, the steel pipe can be directly pushed into the aluminum pipe without relying on manual pipe threading. This greatly reduces the labor intensity of workers, avoids the problem of decreased accuracy and efficiency caused by human fatigue, effectively improves production efficiency, and meets the market demand for large-scale and efficient production of composite spiral blade tubes.

[0017] 3. The central positioning device is distributed on each support base, which can be adapted to the production of steel pipes and aluminum pipes of different specifications. It has strong applicability and can flexibly respond to production orders of multiple varieties. Attached Figure Description

[0018] Figure 1 This is an overall isometric view of the present invention.

[0019] Figure 2 This is a schematic diagram of the center positioning device of this utility model.

[0020] Figure 3 This is a side view of the center positioning device of this utility model.

[0021] Figure 4 This is a schematic diagram of the support device structure of this utility model.

[0022] Figure 5 For the present utility model Figure 1 Enlarged view of area A in the middle.

[0023] In the diagram: 1. Support device; 11. Support frame; 12. Support crossbar; 13. Connecting rod; 14. Support seat; 15. Center positioning telescopic rod; 2. Center positioning device; 21. Fixed seat; 22. Center positioning support block; 221. Arc-shaped positioning groove; 23. Limiting block; 231. Limiting surface; 24. Connecting plate; 25. Shaft; 26. Drive rod; 261. Drive guide wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3 and Figure 5 As shown, a composite spiral lamellar tube rolling device includes a support device 1 and a center positioning device 2 for fitting steel and aluminum tubes together. The center positioning device 2 is mounted on the support device 1. During center positioning, the steel and aluminum tubes are placed on the support device 1 above the center positioning device 2. After the support device 1 provides auxiliary support, the center positioning device 2 adjusts the center positioning position. The center positioning device 2 includes a fixed base 21, a center positioning support block 22, limiting blocks 23 symmetrically arranged on both sides of the center positioning support block 22, a connecting plate 24, a shaft 25, and a drive rod 26. The center positioning support block 22 is located on the top of the fixed base 21, and the top of the center positioning support block 22 has an arc-shaped positioning groove 221 for center positioning of the steel and aluminum tubes, which facilitates the initial center positioning of the steel and aluminum tubes. The connecting plate 24 is symmetrically connected to the bottom of the limiting blocks 23 on both sides of the central positioning support block 22; the limiting block 23 is provided with a limiting surface 231 on the side of the limiting block 23 closest to the central positioning support block 22, and a protective silicone pad is pasted on the outer wall of the limiting surface 231. When limiting the steel pipe and aluminum pipe, the protective silicone pad plays a buffering and protective role, reducing the damage to the pipe body. Each connecting plate 24 is rotatably connected to the fixed seat 21 via a shaft 25 on the side near the limiting block 23, allowing the limiting block 23 to rotate around the shaft 25, thereby clamping or releasing the tube body. The drive rod 26 has a cross-shaped structure and is located inside the fixed seat 21 between the two connecting plates 24. Both ends of the drive rod 26 are connected to drive guide wheels 261. The outer wall of the drive guide wheels 261 is slidably connected to the inner wall below the connecting plate 24. The top of the drive rod 26 passes through the fixed seat 21 and is connected to the bottom of the central positioning support block 22. The lifting and lowering of the drive rod 26 drives the drive guide wheels 261 to move, thereby pushing the connecting plate 24 to rotate, thus realizing the action of the limiting block 23.

[0026] During positioning, the steel pipe is placed on the arc-shaped positioning groove 221 of the two symmetrically arranged center positioning devices 2 in the first group, and the aluminum pipe is placed on the two symmetrically arranged center positioning devices 2 in the second group. The two groups of center positioning devices 2 are on the same straight line, and the drive rod 26 is driven to perform positioning at the same time. At this time, the aluminum pipe and the steel pipe on the two groups of center positioning devices 2 are positioned on the same horizontal plane. The steel pipe is pushed into the aluminum pipe from one side to complete the fitting.

[0027] Please see Figure 1 , Figure 4 and 5 As shown, the support device 1 includes a symmetrically arranged support frame 11, which is H-shaped. The top inner walls of the two support frames 11 are connected by symmetrically arranged support crossbars 12. The two ends of the two support crossbars 12 are connected by C-shaped connecting rods 13. The two support crossbars 12 and the connecting rods 13 together form a placement rack for placing steel pipes and aluminum pipes, which facilitates the placement of the pipes. A support seat 14 is provided on the support frame 11 located at the bottom between the two support crossbars 12. A central positioning telescopic rod 15 is provided inside the support seat 14. The central positioning device 2 is distributed on each support seat 14, and the bottom of the fixed seat 21 is fixed to the top of the support seat 14. The top of the central positioning telescopic rod 15 passes through the support seat 14 and is connected to the bottom of the drive rod 26. The central positioning telescopic rod 15 is an electric telescopic rod, which is electrically connected to an external controller through a wire. The extension and retraction of the central positioning telescopic rod 15 is controlled by the external controller, which can precisely control the raising and lowering of the drive rod 26.

[0028] Workflow: The steel pipe is placed on the arc-shaped positioning grooves 221 of the two symmetrically arranged center positioning devices 2 in the first group. The aluminum pipe is placed on the two symmetrically arranged center positioning devices 2 in the second group, ensuring that the two groups of center positioning devices 2 are on the same straight line. A support device 1 is used for auxiliary support. The support crossbar 12 and connecting rod 13 of the support device 1 form a placement frame that bears the load for the steel and aluminum pipes, ensuring the stability of the pipes during the positioning process. The center positioning telescopic rod 15 is controlled by an external controller, which pushes the drive rod 26 to rise and fall. The drive guide wheels 261 at both ends of the drive rod 26 slide along the inner wall below the connecting plate 24, causing the connecting plate 24 to rotate around the shaft 25, thereby causing the limiting blocks 23 on both sides to rotate towards the center positioning support block 22. The limiting surface 231 is used to clamp the steel pipe and the aluminum pipe, achieving precise center positioning. The aluminum pipe and the steel pipe on the two sets of center positioning devices 2 are positioned on the same horizontal plane. The steel pipe is pushed into the aluminum pipe from one side, completing the fitting of the steel pipe and the aluminum pipe, so as to carry out subsequent rolling and other processes.

[0029] This application, through the cooperation of the arc-shaped positioning groove 221 of the center positioning device 2 and the limiting block 23, can accurately achieve the center alignment of the steel pipe and the aluminum pipe, avoiding the situation where the steel pipe is inserted at an angle and scratches the inner wall of the aluminum pipe when manually threading the pipe, ensuring that the pipe body fits evenly during subsequent rolling, guaranteeing the heat exchange efficiency of the composite spiral finned tube, while improving the structural stability of the finned tube, extending its service life, and reducing maintenance costs and safety risks in industrial production.

[0030] Furthermore, by utilizing the central positioning telescopic rod 15 in conjunction with the arc-shaped positioning groove 221 and the limiting block 23, the central positioning operation before the steel pipe and aluminum pipe are fitted together can be automatically completed. After the steel pipe and aluminum pipe are centrally positioned, the steel pipe can be directly pushed into the aluminum pipe without relying on manual pipe threading. This greatly reduces the labor intensity of workers, avoids the problem of decreased accuracy and efficiency caused by human fatigue, effectively improves production efficiency, and meets the market demand for large-scale and efficient production of composite spiral blade tubes.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A composite spiral blade rolling apparatus, comprising a support device (1) and a center positioning device (2) for fitting steel tubes and aluminum tubes together, characterized in that: The center positioning device (2) is mounted on the support device (1); the center positioning device (2) includes a fixed base (21), a center positioning support block (22), limiting blocks (23) arranged symmetrically on both sides of the center positioning support block (22), a connecting plate (24), a shaft (25), and a drive rod (26); the center positioning support block (22) is located on the top of the fixed base (21), and the connecting plate (24) is symmetrically connected to the bottom of the limiting blocks (23) on both sides of the center positioning support block (22); each of the connecting plates... The side of the connecting plate (24) near the limiting block (23) is rotatably connected to the fixed seat (21) via a shaft (25); the driving rod (26) has a cross-shaped structure and is located inside the fixed seat (21) between the two connecting plates (24); the two ends of the driving rod (26) are connected to driving guide wheels (261), the outer wall of the driving guide wheel (261) is slidably connected to the inner wall below the connecting plate (24), and the top of the driving rod (26) penetrates the fixed seat (21) and is connected to the bottom of the center positioning support block (22).

2. The composite spiral blade rolling apparatus according to claim 1, characterized in that: The support device (1) includes a support frame (11) arranged in a symmetrical structure, the support frame (11) being H-shaped; the top inner walls of the two support frames (11) are connected by symmetrically arranged support crossbars (12), the two ends of the two support crossbars (12) are connected by C-shaped connecting rods (13), the two support crossbars (12) and the connecting rods (13) together constitute a placement rack for placing steel pipes and aluminum pipes; a support seat (14) is provided on the support frame (11) located at the bottom between the two support crossbars (12), and a central positioning telescopic rod (15) is provided inside the support seat (14).

3. The composite spiral blade rolling apparatus according to claim 2, characterized in that: The central positioning device (2) is distributed on each of the support seats (14), and the bottom of the fixed seat (21) is fixed to the top of the support seat (14). The top of the central positioning telescopic rod (15) passes through the support seat (14) and is connected to the bottom of the drive rod (26).

4. The composite spiral blade rolling apparatus according to claim 1, characterized in that: The top of the central positioning support block (22) is provided with an arc-shaped positioning groove (221) for center positioning of the steel pipe and aluminum pipe.

5. The composite spiral blade rolling apparatus according to claim 1, characterized in that: The limiting block (23) has a limiting surface (231) on the side near the central positioning support block (22), and a protective silicone pad is pasted on the outer wall of the limiting surface (231).

6. The composite spiral blade rolling apparatus according to claim 3, characterized in that: The central positioning telescopic rod (15) is an electric telescopic rod, and the telescopic action of the central positioning telescopic rod (15) is controlled by an external controller.

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