Expansion protection device for vehicle corrugated pipe production
By using protective components and sensors to regulate the air intake during the corrugated pipe production process, the problem of excessive expansion of the metal pipe was solved, thus achieving protection of the metal pipe and stability of the production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU FLECK AUTO PARTS MFG CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-08-04
AI Technical Summary
During the production of corrugated pipes, unstable air intake can cause excessive expansion of the metal pipe, which can easily lead to cracks or ruptures on the outer wall. Furthermore, the clamps and the metal pipes can easily cause scratches and damage when they are squeezed together.
An expansion protection device including protective components was designed. It protects the outer wall of the metal tube with lubricating oil and uses a sensor to regulate the air intake to prevent excessive expansion.
It effectively prevents scratches and damage to the outer wall of metal pipes, ensuring the smooth progress of the production process.
Smart Images
Figure CN224586703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal bellows technology, and in particular to an expansion protection device for the production of automotive bellows. Background Technology
[0002] The corrugated pipe corrugating mechanism consists of a clamp and an air pump pipe. The air pump pipe has air holes. The metal pipe runs on the air pump pipe. When it passes through the air holes, the clamp on the production line clamps the metal pipe. Then, air is introduced into the air holes, blowing up and expanding part of the metal pipe outside the air holes. The clamp then clamps the expanded part, forming corrugations on the outer wall of the metal pipe.
[0003] If there is a problem with the air intake during this process, the metal tube will expand excessively, and cracks or breaks will appear on the outer wall. Since the metal tube and the clamp are both made of metal, they are easily scratched and damaged when they are squeezed together without protection. Utility Model Content
[0004] The purpose of this application is to provide an expansion protection device for the production of automotive bellows, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] An expansion protection device for automotive bellows production includes a workbench and a protection assembly mounted on the workbench. The protection assembly includes mounting plates, drip pipes, and sensors. Two mounting plates are fixedly mounted on the workbench surface. A hole is opened at the center of the two mounting plates, through which the bellows passes. A contact plate is movably mounted between the two mounting plates. The sensor is fixedly mounted on one side of the mounting plate, with the mounting position of the contact plate corresponding to the sensor. A sliding groove is formed through the upper outer wall of both mounting plates, and a sliding rod is installed through the two sliding grooves. Drip pipes are fixedly mounted at both ends of the sliding rod.
[0007] Preferably, a movable rod is provided between the two mounting plates, the movable rod is fixedly connected to a sliding rod, and a cylinder is fixedly installed on one side of each mounting plate, with the output end of the cylinder movably connected to the movable rod. A vertical groove is formed through the outer wall of the movable rod, and a connecting ring is fixedly installed on the output end of the cylinder, the connecting ring passing through the vertical groove of the movable rod.
[0008] Preferably, a fixing plate is fixedly installed on one side of the mounting plate, and an opening is made in the outer wall of one side of the fixing plate. A telescopic rod is fixedly installed on one end of the contact plate, and one end of the telescopic rod passes through the opening in the fixing plate. A spring is installed between the contact plate and the fixing plate, and the spring is sleeved on the outside of the telescopic rod. The sensor uses contact sensing, and the sensor is fixedly installed on one side of the fixing plate, with the sensor's installation position corresponding to the end of the telescopic rod.
[0009] The beneficial effects of this utility model are: by setting up protective components, the lubricating oil plays a protective role on the outer wall of the metal tube, preventing scratches on the outer wall of the metal tube; the contact rod and sensor work together to prompt the operator to adjust the air intake of the air pump, preventing the metal tube from cracking and breaking due to excessive expansion. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 In this utility model Figure 1 A magnified schematic diagram of the structure of region A;
[0012] Figure 3 In this utility model Figure 1 A magnified schematic diagram of the local structure of region B;
[0013] Figure 4 This is a schematic diagram showing the working state of the protective component in this utility model.
[0014] In the diagram: 1. Workbench; 2. Mounting plate; 3. Slide groove; 4. Cylinder; 5. Fixing plate; 6. Contact plate; 7. Telescopic rod; 8. Sensor; 9. Moving rod; 10. Slide rod; 11. Oil drip pipe; 12. Connecting ring; 13. Spring. Detailed Implementation
[0015] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.
[0016] like Figure 1-4An expansion protection device for automotive bellows production is shown, comprising a workbench 1 and a protection assembly mounted on the workbench 1. The protection assembly includes a mounting plate 2, an oil dripping pipe 11, and a sensor 8. Two mounting plates 2 are provided and fixedly mounted on the workbench 1. Holes are opened at the center of the two mounting plates 2, through which the bellows passes. A contact plate 6 is movably mounted between the two mounting plates 2. The sensor 8 is fixedly mounted on one side of the mounting plate 2, with the mounting position of the contact plate 6 corresponding to that of the sensor 8. A sliding groove 3 is provided through the upper outer wall of both mounting plates 2, and a sliding rod 10 is installed through the two sliding grooves 3. An oil dripping pipe 11 is fixedly mounted at both ends of the sliding rod 10.
[0017] A movable rod 9 is provided between the two mounting plates 2. The movable rod 9 is fixedly connected to the sliding rod 10. A cylinder 4 is fixedly installed on one side of the mounting plate 2. The output end of the cylinder 4 is movably connected to the movable rod 9. A vertical groove is provided through the outer wall of the movable rod 9. A connecting ring 12 is fixedly installed on the output end of the cylinder 4. The connecting ring 12 passes through the vertical groove of the movable rod 9.
[0018] A fixing plate 5 is fixedly installed on one side of the mounting plate 2. An opening is made in the outer wall of one side of the fixing plate 5. A telescopic rod 7 is fixedly installed on one end of the contact plate 6, with one end of the telescopic rod 7 passing through the opening in the fixing plate 5. A spring 13 is installed between the contact plate 6 and the fixing plate 5, and the spring 13 is sleeved on the outside of the telescopic rod 7. The sensor 8 uses contact sensing and is fixedly installed on one side of the fixing plate 5, with its installation position corresponding to the end of the telescopic rod 7.
[0019] Example: Mounting plate 2 on workbench 1 is installed on both sides of the air hole on the air pump pipe. The metal pipe is sleeved on the air pump pipe. When it passes through the air hole, the clamp on the production line clamps the metal pipe. Then the external oil pump is started. The oil dripping pipe 11 is connected to the external oil pump pipeline. Lubricating oil drips from the oil dripping pipe 11. The cylinder 4 is started. The moving rod 9 is driven by the connecting ring 12. The moving rod 9 drives the slide rod 10 to move in the slide groove 3. The slide rod 10 drives the oil dripping pipe 11 to move. The slide groove 3 is arc-shaped. When the slide rod 10 moves, the moving rod 9 rises and falls on the connecting ring 12. This can adapt to the movement trajectory of the slide rod 10. The slide rod 10 drives the oil dripping pipe 11 to move, so that the oil dripping pipe 11 can drip oil evenly on the outer wall of the metal pipe. Then the air pump pipe is vented. The gas expands part of the metal pipe outside the air hole. The two clamps on the production line are combined to clamp the expanded part of the metal pipe, forming a corrugation on the outer wall of the metal pipe. The lubricating oil protects the outer wall of the metal tube, allowing the clamp to move more smoothly along the tube and preventing scratches. When the outer wall of the metal tube expands, if the expansion is within acceptable limits, the expanded outer wall will not contact the end of the contact plate 6. If the expansion is excessive, the expanded outer wall will push the contact plate 6, causing the telescopic rod 7 to move. The spring 13 is compressed and deformed, and one end of the telescopic rod 7 passes through the circular hole in the fixed plate 5 and contacts the sensor 8. The sensor 8 sends an electrical signal, prompting the operator to adjust the air intake of the air pump to prevent cracks and damage to the metal tube due to excessive expansion.
[0020] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.
Claims
1. An inflation protection device for the production of corrugated pipes for vehicles, comprising a workbench (1) and a protection assembly mounted on the workbench (1), characterized in that: The protective assembly includes a mounting plate (2), an oil drip pipe (11), and a sensor (8). Two mounting plates (2) are set and fixedly installed on the workbench (1). A hole is opened at the center of the two mounting plates (2), and a corrugated pipe passes through the hole. A contact plate (6) is movably installed between the two mounting plates (2). The sensor (8) is fixedly installed on one side of the mounting plate (2). The installation position of the contact plate (6) corresponds to that of the sensor (8). A sliding groove (3) is opened through the upper outer wall of both mounting plates (2). A sliding rod (10) is installed through the two sliding grooves (3). An oil drip pipe (11) is fixedly installed at both ends of the sliding rod (10).
2. The expansion protection device for automotive bellows production according to claim 1, characterized in that: A movable rod (9) is provided between the two mounting plates (2). The movable rod (9) is fixedly connected to the slide rod (10). A cylinder (4) is fixedly installed on one side of the mounting plate (2). The output end of the cylinder (4) is movably connected to the movable rod (9).
3. The expansion protection device for automotive bellows production according to claim 2, characterized in that: The outer wall of the moving rod (9) is provided with a vertical groove, and a connecting ring (12) is fixedly installed at the output end of the cylinder (4). The connecting ring (12) passes through the vertical groove of the moving rod (9).
4. The inflation protection device for the production of a vehicle bellows according to claim 1, characterized in that A fixing plate (5) is fixedly installed on one side of the mounting plate (2). An opening is made on the outer wall of one side of the fixing plate (5). A telescopic rod (7) is fixedly installed on one end of the contact plate (6). One end of the telescopic rod (7) passes through the opening of the fixing plate (5). A spring (13) is installed between the contact plate (6) and the fixing plate (5). The spring (13) is sleeved on the outside of the telescopic rod (7).
5. The inflation protection device for the production of a vehicle bellows according to claim 4, characterized in that The sensor (8) is a contact sensor. The sensor (8) is fixedly installed on one side of the fixed plate (5). The installation position of the sensor (8) corresponds to the end of the telescopic rod (7).