End expansion forming device
By designing an end expansion forming device, using a servo motor and a pneumatic telescopic rod to clamp the copper tube, and achieving stable expansion through frictional heat generation, the problem of insufficient clamping force caused by the thin inner wall of the copper tube is solved, and the expansion effect is improved.
Patent Information
- Application Number
- CN202423049393.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The thin inner wall of the copper tube results in insufficient clamping force, which affects the effect of traditional stamping expansion.
An end expansion forming device is designed. The expansion head is driven by a servo motor, the copper tube is clamped by a pneumatic telescopic rod and an elastic sleeve, and frictional heat is used to achieve stable expansion of the copper tube.
The stability and effect of copper tube expansion are improved, the movement of the copper tube during expansion is reduced, the expansion force is enhanced, and the movement of the copper tube due to insufficient clamping force is avoided.
Smart Images
Figure CN223476126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of copper tube end expansion technology, and in particular to an end expansion forming device. Background Technology
[0002] As is well known, heat exchangers mainly include plate heat exchangers and tube-fin heat exchangers. Copper tubes are an important raw material for the processing and manufacturing of refrigeration equipment. Copper tubes are an important component of the evaporator and condenser of dryers, and are also used to make connecting pipes and fittings. One end of the copper tube needs to be expanded before it can be used. Its fixing is generally done by a single clamping method. However, the inner wall of the copper tube is thin, and the clamping force on the copper tube is not too great. This makes the copper tube very easy to move during traditional stamping expansion, thus affecting the expansion effect of the copper tube. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies where the inner wall of the copper tube is thin, resulting in insufficient clamping force and easy movement of the copper tube during traditional stamping expansion, thus affecting the expansion effect. Therefore, this invention proposes an end expansion forming device.
[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0005] Design an end expansion forming device, including a worktable, a movable component is provided on one side of the top of the worktable, a servo motor is provided on the movable component, an expansion head is provided on the output shaft of the servo motor, a fixed seat is provided on the other side of the top of the worktable, a through groove is provided on the fixed seat, a plurality of pneumatic telescopic rods are provided on one side of the through groove, a clamping block is installed on the extension rod of the plurality of pneumatic telescopic rods, and a copper tube is clamped between the plurality of clamping blocks.
[0006] Preferably, an air pump is provided on one side of the fixed base, and an elastic sleeve is provided at one end of the air pump. The elastic sleeve passes through the through groove and extends into the copper tube.
[0007] Preferably, a connecting block is installed at one end of the elastic sleeve, and a rotating block is rotatably installed on the connecting block.
[0008] Preferably, the vertical projection of the rotating block is located on one of the clamping blocks.
[0009] Preferably, each of the clamping blocks is provided with a silicone pad.
[0010] Preferably, the clamping blocks are arranged in a circumferential shape around the copper tube.
[0011] The end expansion forming device proposed in this utility model has the following advantages: after the copper tube is clamped by several clamping blocks, the expansion head can rotate during the movement of the moving component. As the copper tube is subjected to the impact expansion force during the expansion process, the friction between the expansion head and the inner wall of the copper tube will generate heat, so that the force of the copper tube stamping expansion does not need to be too large, and the copper tube will not move during the stamping expansion process. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an end expansion forming device proposed in this utility model.
[0013] Figure 2 This is a partial cross-sectional view of the end expansion forming device proposed in this utility model.
[0014] Figure 3 for Figure 2 A magnified view of a portion at point A.
[0015] In the diagram: 1. Workbench; 2. Moving component; 3. Servo motor; 4. Expansion head; 5. Fixed base; 6. Through slot; 7. Pneumatic telescopic rod; 8. Clamping block; 9. Copper pipe; 10. Air pump; 11. Elastic sleeve; 12. Connecting block; 13. Rotating block; 14. Silicone pad. Detailed Implementation
[0016] 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 the embodiments.
[0017] Example 1: Refer to Figure 1-3 An end expansion forming device includes a worktable 1, a moving component 2 is provided on one side of the top of the worktable 1, a servo motor 3 is provided on the moving component 2, an expansion head 4 is provided on the output shaft of the servo motor 3, a fixed seat 5 is provided on the other side of the top of the worktable 1, a through groove 6 is provided on the fixed seat 5, a plurality of pneumatic telescopic rods 7 are provided on one side of the through groove 6, a clamping block 8 is installed on the extension rod of the plurality of pneumatic telescopic rods 7, a copper tube 9 is clamped between the plurality of clamping blocks 8, the copper tube 9 is collinear with the expansion head 4, an air pump 10 is provided on one side of the fixed seat 5, an elastic sleeve 11 is provided at one end of the air pump 10, the elastic sleeve 11 passes through the through groove 6 and extends into the copper tube 9.
[0018] The expandable copper tube 9 is placed on the elastic sleeve 11. Several pneumatic telescopic rods 7 are activated, and their extension rods, along with clamping blocks 7, clamp the copper tube 9, aligning its axis with that of the expansion head 4. Then, the air pump 10 is activated, inflating and expanding the elastic sleeve 11, causing its outer wall to adhere to the inner wall of the copper tube 9, making the copper tube 9 less prone to movement. The servo motor 3 is activated to rotate the expansion head 4, and then the moving assembly is activated to move the servo motor 3, along with the expansion head 4, toward the copper tube 9. During the expansion process, the copper tube 9 is subjected to impact and expansion forces, and the friction between the expansion head 4 and the inner wall of the copper tube 9 generates heat, making the copper tube 9 easier to reshape. This reduces the force required for the copper tube 9 to expand, preventing it from moving during the expansion process and resulting in a better expansion effect.
[0019] Example 2: An optimization based on Example 1, with reference to... Figure 1-3 One end of the elastic sleeve 11 is equipped with a connecting block 12, and a rotating block 13 is rotatably mounted on the connecting block 12. The vertical projection of the rotating block 13 is located on one of the clamping blocks 8. A silicone pad 14 is provided on each of the clamping blocks 8, and the clamping blocks 8 are arranged in a circumferential shape around the copper tube 9.
[0020] The connecting block 12 and rotating block 13 are set so that after the expansion head 4 comes into contact with the rotating block 13, the rotation of the rotating block 13 will not affect the elastic sleeve 11, thereby reducing the chance of the elastic sleeve 11 being damaged. The silicone pad 14 can reduce the chance of clamping marks appearing on the outer wall of the copper tube.
[0021] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An end-expansion forming device, comprising a worktable (1), characterized in that, A moving component (2) is provided on one side of the top of the workbench (1). A servo motor (3) is provided on the moving component (2). An expansion head (4) is provided on the output shaft of the servo motor (3). A fixed seat (5) is provided on the other side of the top of the workbench (1). A through groove (6) is provided on the fixed seat (5). Several pneumatic telescopic rods (7) are provided on one side of the through groove (6). Clamping blocks (8) are installed on the extension rods of the several pneumatic telescopic rods (7). Copper tubes (9) are clamped between the several clamping blocks (8).
2. The end expansion forming device according to claim 1, characterized in that, An air pump (10) is provided on one side of the fixed base (5), and an elastic sleeve (11) is provided at one end of the air pump (10). The elastic sleeve (11) passes through the through groove (6) and extends into the copper tube (9).
3. The end expansion forming device according to claim 2, characterized in that, A connecting block (12) is installed at one end of the elastic sleeve (11), and a rotating block (13) is rotatably installed on the connecting block (12).
4. The end expansion forming device according to claim 3, characterized in that, The vertical projection of the rotating block (13) is located on one of the clamping blocks (8).
5. The end expansion forming device according to claim 1, characterized in that, Each of the clamping blocks (8) is provided with a silicone pad (14).
6. The end expansion forming apparatus according to claim 1, characterized in that, Several of the clamping blocks (8) are arranged in a circumferential shape around the copper tube (9).