Forming tool for tail tube of wire tube type condenser
By designing a forming fixture for the tail tube of a wire tube condenser, the tail tube is repaired and formed using a combination of a working cylinder and a roller, which solves the problem of tail tube collapse and deformation and improves the forming quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, the tail tube of the wire tube condenser is prone to collapse and deformation with an elliptical cross section after molding, which affects the molding quality.
A wire tube condenser tail tube forming tooling is adopted, which uses a combination structure of working cylinder, rotating shaft, roller and pointed cone to repair and form the tail tube by the close rotation of the roller and the inner wall of the working cylinder and the pre-expansion of the pointed cone.
It effectively repaired the collapse and deformation of the tail tube and improved the forming quality of the condenser tail tube.
Smart Images
Figure CN224073181U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of condenser tube technology, and in particular to a tooling for forming the tail tube of a wire tube condenser. Background Technology
[0002] In the field of refrigeration equipment (such as refrigerators and air conditioners), the wire tube condenser is the core heat exchange component, and its performance directly determines the system's energy efficiency and operational reliability. This component is usually composed of high-density arranged metal tubes (copper or aluminum tubes). It mainly promotes the phase change of gaseous refrigerant into liquid through heat exchange between the tube wall and the external environment. The tail tube serves as a transition structure connecting the condenser with key components such as the compressor and evaporator.
[0003] In existing technologies, multi-axis CNC pipe bending machines are typically used in conjunction with special molds to achieve complex three-dimensional bending and forming through pre-programmed paths. During the manufacturing process, specific parts of the pipe, namely the tail section, need to be precisely heated at a controlled temperature (usually close to the material recrystallization temperature) before a progressive bending process is implemented. However, after the tail section is formed, the pipe wall at the end of the tail section is prone to collapse deformation with an elliptical cross section, which affects the forming quality. Utility Model Content
[0004] The purpose of this invention is to solve the problem in the prior art that the tube wall at the end of the tail tube is prone to collapse and deformation with an elliptical cross section, which affects the molding quality. Therefore, this invention proposes a forming tool for the tail tube of a wire tube condenser.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A forming fixture for the tail tube of a wire-tube condenser includes a working cylinder with an opening at one end. A rotating shaft is rotatably connected inside the cavity of the working cylinder. A convex plate is provided on the rotating shaft, and a groove is formed on the convex plate. A movable plate is slidably connected inside the groove, and a roller is rotatably connected to the movable plate. The outer circumferential surface of the roller abuts against the inner wall of the working cylinder. A pointed conical cylinder is fixedly connected to the other end of the working cylinder, and the axis of the pointed conical cylinder coincides with the axis of the working cylinder.
[0007] To ensure that the roller abuts against the inner wall of the working cylinder, preferably, an extension plate is fixedly connected to the movable plate, the extension direction of the extension plate is the same as the protrusion direction of the convex plate, a connecting rod is rotatably connected to the extension plate, and the roller is fixedly connected to the connecting rod.
[0008] To improve the movement of the roller, a sliding groove is further provided on the inner wall of the groove, the end of the movable plate is slidably connected to the sliding groove, and the bottom of the movable plate is fixedly connected to the bottom of the groove by a limiting spring.
[0009] To facilitate pressing the roller, preferably, a limiting block is fixedly connected to the outer wall of the working cylinder, the limiting block has a through hole communicating with the working cylinder, a pressure plate is slidably connected to the through hole, and a pressing head is provided at the bottom of the pressure plate.
[0010] To facilitate the reset of the pressure plate, preferably, the pressure plate is provided with a reset spring, and the connecting end of the reset spring is connected to the limiting block.
[0011] To facilitate the easy entry of the tail tube into the working cylinder, preferably, the open end of the working cylinder is provided with a widening mask.
[0012] Compared with the prior art, this utility model provides a tooling for forming the tail tube of a wire tube condenser, which has the following advantages:
[0013] 1. The forming fixture for the tail tube of the wire tube condenser pre-expands the tail tube through the conical structure of the pointed cone and holds it for three seconds to appropriately repair the deformation of the tail tube.
[0014] 2. The forming fixture for the tail tube of the wire tube condenser can drive the outer circumferential surface of the roller to rotate against the inner wall of the working cylinder via a rotating shaft, causing the movable plate to move radially and drive the roller to perform planetary rolling along the inner wall of the working cylinder, thereby repairing and forming the collapsed and deformed tail tube and improving the forming quality of the tail tube.
[0015] The parts not covered in this device are the same as or can be implemented using existing technology. This utility model can adaptively repair different defects produced on the end tube wall of the tail tube of the wire tube condenser, thereby repairing and shaping the collapsed and deformed tail tube and improving the shaping quality of the tail tube. Attached Figure Description
[0016] Figure 1 This is a first-view structural schematic diagram of a wire tube condenser tail tube forming tooling proposed in this utility model.
[0017] Figure 2 This is a second-view structural schematic diagram of a wire tube condenser tail tube forming tooling proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the cross-section of a wire tube condenser tail tube forming tool proposed in this utility model. Figure 1 ;
[0019] Figure 4 This is a schematic diagram of the cross-section of a wire tube condenser tail tube forming tool proposed in this utility model. Figure 2 .
[0020] In the diagram: 1. Working cylinder; 2. Conical cylinder; 3. Base; 4. Expanding mask; 5. Rotating shaft; 6. Convex plate; 7. Slide groove; 8. Movable plate; 9. Limiting spring; 10. Connecting rod; 11. Roller; 12. Limiting block; 13. Pressure plate; 14. Return spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] Example:
[0024] Reference Figures 1-4 A forming fixture for the tail tube of a wire-tube condenser includes a working cylinder 1 with an opening at one end, used to place the tail tube of the wire-tube condenser into the working cylinder 1 for tube wall correction and forming. An expanding mask 4 is also provided at the opening end of the working cylinder 1. The inlet diameter of the expanding mask 4 gradually narrows axially to form a trumpet-shaped guiding structure, thereby allowing the tail tube to quickly enter the working cylinder 1. A rotating shaft 5 is rotatably connected inside the cavity of the working cylinder 1. The rotating shaft 5 is driven to rotate by a stepper motor or a drive motor. A convex plate 6 is provided on the rotating shaft 5, and a groove is formed on the convex plate 6. A movable plate 8 is slidably connected in the groove, and a roller 11 is rotatably connected to the movable plate 8. The outer circumferential surface of the roller 11 abuts against the inner wall of the working cylinder 1. After the tail tube is formed, the tube wall at the end of the tail tube is prone to collapse deformation with an elliptical cross-section, thus… The defective tail tube end can be extended into the working cylinder 1 and positioned between the roller 11 and the working cylinder 1. Then, the switch of the rotating shaft 5 is activated. At this time, the rotating shaft 5 can drive the outer circumferential surface of the roller 11 to rotate against the inner wall of the working cylinder 1, thereby rolling the tube wall. The convex plate 6 can cause the movable plate 8 to generate radial feed motion, driving the roller 11 to perform planetary rolling along the inner wall of the working cylinder 1 to repair and shape the collapsed and deformed tail tube, ensuring the subsequent forming quality of the tail tube. A pointed cone 2 is fixedly connected to the other end of the working cylinder 1. The axis of the pointed cone 2 coincides with the axis of the working cylinder 1. After the tail tube is repaired and shaped, the tail tube can be taken out of the working cylinder 1 and then inserted into the pointed cone 2 for further shaping to improve the forming quality of the tail tube.
[0025] In the above scheme, during the manufacturing process of the wire tube condenser, the tail tube end, after initial forming, often exhibits elliptical cross-section defects due to material springback. Therefore, when the tail tube experiences significant collapse deformation, it can be inserted into the conical cylinder 2 first. The conical structure of the conical cylinder 2 pre-expands the tail tube and holds it for three seconds to appropriately repair the deformation. Subsequently, it is extended into the working cylinder 1 and positioned between the roller 11 and the working cylinder 1. The rotating shaft 5 can drive the outer circumferential surface of the roller 11 to rotate against the inner wall of the working cylinder 1, causing the movable plate 8 to move radially. This drives the roller 11 to perform planetary rolling along the inner wall of the working cylinder 1, repairing and forming the collapsed tail tube and improving its forming quality. When the tail tube experiences minor collapse deformation, it can be directly inserted into the working cylinder 1 and positioned between the roller 11 and the working cylinder 1. The tail tube can then be repaired using the roller 11.
[0026] A base 3 is also provided at the bottom of the working cylinder 1 for placing the device on the operating table.
[0027] To facilitate the adjustment of the position of the roller 11, its tail tube is conveniently placed inside the working cylinder 1. A limiting block 12 is fixedly connected to the outer wall of the working cylinder 1. The limiting block 12 has a through hole that communicates with the working cylinder 1. A pressure plate 13 is slidably connected to the through hole. A pressing head is provided at the bottom of the pressure plate 13. By pressing the pressure plate 13, the pressing head at the bottom of the pressure plate 13 can press the roller 11. During this process, the pressing head will press the roller 11, thereby increasing the speed at which the tail tube enters the working cylinder 1.
[0028] A reset spring 14 is provided on the pressure plate 13. The connecting end of the reset spring 14 is connected to the limit block 12 to reset the pressure plate 13 so that it is in the through hole in a static state.
[0029] Furthermore, a sliding groove 7 is provided on the inner wall of the groove, and the end of the movable plate 8 is slidably connected to the sliding groove 7. The bottom of the movable plate 8 is fixedly connected to the bottom of the groove through a limiting spring 9. When the pressure plate 13 is stopped, the limiting spring 9 will automatically drive the movable plate 8 to reset, so that the outer circumferential surface of the roller 11 always abuts against the inner wall of the working cylinder 1 to clamp the tail tube. An extension plate is fixedly connected to the movable plate 8. The extension direction of the extension plate is the same as the protrusion direction of the convex plate 6. A connecting rod 10 is rotatably connected to the extension plate. The roller 11 is fixedly connected to the connecting rod 10 for rotating connection of the roller 11, so that the roller 11 can rotate while moving up and down.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A silk tube condenser tail pipe forming tool, comprising a working cylinder (1) provided with an opening at one end, characterized in that, The working barrel (1) is rotationally connected with a rotating shaft (5) in the cavity, Wherein, the rotating shaft (5) is provided with a convex plate (6), the convex plate (6) is provided with a groove, the groove is slidably connected with a movable plate (8), the movable plate (8) is rotationally connected with a roller (11), the outer circumferential surface of the roller (11) is in abutment with the inner wall of the working barrel (1). The other end of the working barrel (1) is fixedly connected with a sharp cone barrel (2), the axis of the sharp cone barrel (2) coincides with the axis of the working barrel (1).
2. The tail pipe forming tooling for a serpentine condenser according to claim 1, wherein, The movable plate (8) is fixedly connected with an extension plate, the extension direction of the extension plate is the same as the protruding direction of the convex plate (6), the extension plate is rotationally connected with a connecting rod (10), and the roller (11) is fixedly connected with the connecting rod (10).
3. The tail pipe forming tooling for a serpentine condenser according to claim 2, wherein, The inner wall of the groove is provided with a sliding groove (7), the end of the movable plate (8) is slidably connected with the sliding groove (7), and the bottom of the movable plate (8) is fixedly connected with the bottom of the groove through a limiting spring (9).
4. The tail pipe forming tooling for a serpentine condenser according to claim 1, wherein, The outer wall of the working barrel (1) is fixedly connected with a limiting block (12), the limiting block (12) is provided with a through hole in communication with the working barrel (1), the through hole is slidably connected with a pressing plate (13), and the bottom of the pressing plate (13) is provided with a pressing head.
5. A tail pipe forming tool for a serpentine condenser according to claim 4, wherein The pressing plate (13) is provided with a reset spring (14), and the connecting end of the reset spring (14) is connected with the limiting block (12).
6. The tail pipe forming tooling for a serpentine condenser according to claim 1, wherein, The opening end of the working barrel (1) is provided with an expanding cover (4).