PE pipe opening flattening device
By combining the design of the limiting cylinder and the clamping plate, the clamping stability is improved by utilizing friction and elastic structure, which solves the problem of clamping offset during PE pipe cutting and ensures processing accuracy and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-03
AI Technical Summary
In the current PE pipe cutting process, the stability of the fixture is affected by the reaction force, which causes the tool to deviate, affecting the machining accuracy and the quality of the pipe end.
The device employs a limiting cylinder and clamping plate structure. The clamping plate, through a combination of limiting blocks, friction pads, and anti-slip pillars, increases clamping stability. It utilizes the friction of rubber or silicone material to prevent displacement of the clamping plate. Combined with a return spring, it expands the moving wheel to contact the tube wall, thereby improving the clamping effect.
It effectively alleviates the reaction force during the cutting process, prevents tool deviation, improves the stability and clamping effect of the clamping plate, and ensures the processing quality of the pipe end.
Smart Images
Figure CN223961361U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe processing technology, and in particular to a PE pipe end mill. Background Technology
[0002] PE pipes are important materials for water supply and drainage, gas transmission and other fields. In actual construction, they often need to be cut. However, the cut pipe ends often have problems such as burrs and uneven cross-sections. These defects will directly affect the subsequent welding quality, resulting in engineering hazards such as insufficient connection strength and reduced sealing performance.
[0003] To solve this problem, existing technologies generally use a flat-end tool to grind the pipe ends. Its working principle is to trim the pipe ends by rotary cutting or scraping. Its core structure includes a carbide tool and a clamping device. When using it, the clamp must first be fixed to the inner wall of the pipe to provide support, and then the tool is driven to rotate along the axial direction of the pipe end to perform the grinding operation.
[0004] However, in actual use, it has been found that the reaction force generated during the cutting process can affect the stability of the fixture, which can easily cause the tool to deviate, thereby affecting the machining accuracy and the quality of the pipe end. Utility Model Content
[0005] The purpose of this invention is to solve the problem in the prior art that the reaction force generated during the cutting process can affect the stability of the fixture and easily cause the tool to deviate, and to propose a PE pipe flat end tool.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A PE pipe end fitting includes a limiting cylinder with a hollow cylindrical structure. A clamping plate is rotatably connected to the limiting cylinder via a connector. One end of the clamping plate extends into the limiting cylinder and is provided with a bending plate. The other end of the clamping plate is provided with a limiting block. A movable rod is threadedly connected to the limiting cylinder. When the movable rod is axially displaced and abuts against the outer surface of the bending plate, the radial component force generated at the end of the movable rod pushes the bending plate to rotate around the connector.
[0008] To improve the clamping stability of the clamping plate, preferably, the end of the limiting block is provided with a friction pad, and the working surface of the friction pad protrudes from the end face of the limiting block.
[0009] Furthermore, at least one set of anti-slip posts are symmetrically arranged on both sides of the clamping end face of the limiting block, and the anti-slip posts cooperate with the friction pad.
[0010] To facilitate the installation of the clamping plate, preferably, an installation sleeve is fixedly connected to the outer wall of the limiting cylinder, the installation sleeve has a through hole, the connecting member includes a connecting rod fixedly connected to the through hole, the clamping plate is rotatably connected to the connecting rod, and the bending plate is connected to the inner wall of the limiting cylinder through a limiting spring.
[0011] To improve the limiting effect of the clamping plate, preferably, multiple sets of clamping plates are provided, and the multiple sets of clamping plates are evenly distributed along the circumferential direction of the limiting cylinder.
[0012] To facilitate the telescopic movement of the movable rod, a limiting nut is provided at the open end of the limiting cylinder. The movable rod is threadedly connected to the limiting nut through a threaded groove, and a limiting ring is provided on the outer wall of the movable rod, which fits against the inner wall of the limiting cylinder.
[0013] To facilitate the rotation of the movable rod, preferably, a torsion bar is fixedly connected to the movable rod.
[0014] To improve the clamping effect of the clamping plate, preferably, a mounting ring is fixedly connected to the limiting nut, a connecting plate is rotatably connected to the mounting ring, a limiting box is fixedly connected to the connecting plate, a limiting rod is slidably connected to the limiting box, and a moving wheel is provided on the top of the limiting rod.
[0015] To further improve the expansion effect of the movable wheel, the limiting box is provided with a sliding groove, a movable plate is slidably connected to the sliding groove, the limiting rod is fixedly connected to the top of the movable plate, and the bottom of the movable plate is fixedly connected to the bottom of the limiting box through a return spring.
[0016] Furthermore, the anti-slip posts and friction pads are made of rubber or silicone.
[0017] Compared with the prior art, this utility model provides a PE pipe end mill, which has the following advantages:
[0018] 1. This PE pipe end mill, by increasing the clamping force of the clamping plate, the pressing depth of the anti-slip column and the friction of the friction pad together prevent the clamping plate from shifting, thereby effectively alleviating the reaction force generated during the cutting process, improving the stability of the clamping plate, and preventing the tool from shifting during use.
[0019] 2. This PE pipe flat end clamp can expand the movable plate through the return spring, so that the moving wheel abuts against the inner wall of the PE pipe, thereby improving the limiting effect of the clamping plate.
[0020] The parts of this device not covered herein are the same as or can be implemented using existing technology. This utility model can make the anti-slip column and the friction pad cooperate to generate friction to apply a stabilizing effect to the clamping plate, jointly preventing the clamping plate from shifting, effectively alleviating the reaction force generated during the cutting process, improving the stability of the clamping plate, and preventing the tool from shifting during use. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the isometric structure of a PE pipe end cap device proposed in this utility model;
[0022] Figure 2 This is a cross-sectional structural diagram of a PE pipe end mill proposed in this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of a PE pipe end clamping plate proposed in this utility model;
[0024] Figure 4 This is a schematic diagram of the movable rod of a PE pipe end mill proposed in this utility model.
[0025] In the diagram: 1. Limiting cylinder; 2. Mounting sleeve; 3. Through hole; 4. Connecting rod; 5. Clamping plate; 6. Bending plate; 7. Limiting block; 8. Anti-slip column; 9. Friction pad; 10. Limiting spring; 11. Movable rod; 12. Limiting ring; 13. Torsion bar; 14. Threaded groove; 15. Limiting nut; 16. Mounting ring; 17. Connecting plate; 18. Limiting box; 19. Slide groove; 20. Movable plate; 21. Limiting rod; 22. Moving wheel; 23. Return spring; 24. Bubble level. Detailed Implementation
[0026] 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.
[0027] 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.
[0028] Example:
[0029] Reference Figures 1-4A PE pipe end fitting includes a limiting cylinder 1 with a hollow cylindrical structure, which can be placed inside the cavity of the PE pipe. A clamping plate 5 is rotatably connected to the limiting cylinder 1 via a connector. A bending plate 6 is provided at one end of the clamping plate 5 extending into the limiting cylinder 1, and a limiting block 7 is provided at the other end of the clamping plate 5. A movable rod 11 is also threadedly connected to the limiting cylinder 1. The movable rod 11 can automatically lock and limit the fitting. When the movable rod 11 moves axially and abuts against the outer side of the bending plate 6, the radial component force generated at the end of the movable rod 11 pushes the bending plate 6 to rotate around the connector, thereby causing the clamping plate 5 to expand outward. At this time, the clamping plate 5 drives the limiting block 7 to move towards the inner wall of the PE pipe, forming a radial clamping force, and aligning the center of the limiting cylinder 1 with the PE pipe.
[0030] To improve the clamping effect of the clamping plate 5, a friction pad 9 is provided at the end of the limiting block 7. The working surface of the friction pad 9 protrudes from the end face of the limiting block 7, and the working surface of the friction pad 9 is provided with staggered anti-slip textures. During the clamping process, the limiting block 7 first drives the friction pad 9 to contact the inner wall of the PE pipe. During this process, the friction pad 9 generates an elastic compression of 1-2mm after being pressed, forming a buffer protective layer to avoid excessive clamping force causing indentations or scratches on the inner wall of the PE pipe.
[0031] In addition, at least one set of anti-slip posts 8 are symmetrically arranged on both sides of the clamping end face of the limiting block 7, and the anti-slip posts 8 cooperate with the friction pad 9. There are multiple sets of clamping plates 5, and the multiple sets of clamping plates 5 are evenly distributed along the circumference of the limiting cylinder 1. The device is provided with 5 sets, and other quantities can be replaced as needed. As the clamping force of the clamping plate 5 increases, the pressing depth of the anti-slip posts 8 and the friction force of the friction pad 9 work together to prevent the clamping plate 5 from shifting, thereby effectively alleviating the reaction force generated during the cutting process, improving the clamping stability of the clamping plate 5, and preventing the tool from shifting during use.
[0032] It should be explained that the anti-slip column 8 and the friction pad 9 are made of rubber or silicone. The anti-slip column 8 and the friction pad 9 contact the PE pipe wall to form a positioning reference. As the clamping force of the clamping plate 5 increases, the rubber or silicone anti-slip column 8 and the friction pad 9 undergo elastic deformation, which in turn causes the anti-slip column 8 and the friction pad 9 to work together to generate friction and apply a stabilizing effect to the clamping plate 5, thus preventing the clamping plate 5 from shifting and effectively alleviating the reaction force generated during the cutting process.
[0033] To facilitate the installation of the clamping plate 5, an installation sleeve 2 is fixedly connected to the outer wall of the limiting cylinder 1. The installation sleeve 2 has a through hole 3. The connecting component includes a connecting rod 4 fixedly connected to the through hole 3. The clamping plate 5 is rotatably connected to the connecting rod 4, and the bending plate 6 is connected to the inner wall of the limiting cylinder 1 through the limiting spring 10. The clamping plate 5 can be limited by the limiting spring 10.
[0034] A limiting nut 15 is provided at the open end of the limiting cylinder 1. The movable rod 11 is threaded to the limiting nut 15 through the threaded groove 14. A limiting ring 12 is provided on the outer wall of the movable rod 11. The limiting ring 12 fits against the inner wall of the limiting cylinder 1. A torsion bar 13 is fixedly connected to the movable rod 11. When it is necessary to move the movable rod 11 toward the inside of the limiting cylinder 1, the torsion bar 13 can be rotated clockwise. At this time, the end of the movable rod 11 abuts against the outer side of the bending plate 6. The radial component force generated at the end of the movable rod 11 pushes the bending plate 6 to rotate around the connecting rod 4, causing its clamping plate 5 to expand toward the inner wall of the limiting cylinder 1. During this process, the movable rod 11 can also be in a self-locking state.
[0035] When it is necessary to move the movable rod 11 toward the outside of the limiting cylinder 1, the torsion bar 13 can be rotated counterclockwise. At this time, under the action of the limiting spring 10, the clamping plate 5 is reset.
[0036] A bubble level 24 is also provided on the outer wall of the limiting cylinder 1 to observe the horizontal position of the limiting cylinder 1 so as to make real-time adjustments.
[0037] Additionally, a mounting ring 16 is fixedly connected to the limiting nut 15, a connecting plate 17 is rotatably connected to the mounting ring 16, a limiting box 18 is fixedly connected to the connecting plate 17, a limiting rod 21 is slidably connected to the limiting box 18, a mounting seat is provided on the top of the limiting rod 21, and a movable wheel 22 is rotatably connected to the mounting seat. The movable wheel 22 is made of rubber. A sliding groove 19 is provided on the limiting box 18, and a movable plate 20 is slidably connected to the sliding groove 19. The limiting rod 21 is fixedly connected to the top of the movable plate 20, and the bottom of the movable plate 20 is fixedly connected to the bottom of the limiting box 18 through a return spring 23. The return spring 23 can expand the movable plate 20, thereby causing the movable wheel 22 to abut against the inner wall of the PE pipe, improving the limiting effect of the clamping plate 5. Furthermore, a mounting groove is provided on the connecting plate 17 for mounting a carbide tool or an electric grinder, allowing it to rotate on the connecting plate 17 to cut and grind the end of the PE pipe.
[0038] 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 PE pipe end fitting, comprising a limiting cylinder (1) with a hollow cylindrical structure, characterized in that, A clamping plate (5) is rotatably connected to the limiting cylinder (1) via a connector. One end of the clamping plate (5) extends into the limiting cylinder (1) and is provided with a bending plate (6). The other end of the clamping plate (5) is provided with a limiting block (7). A movable rod (11) is threaded onto the limiting cylinder (1). When the movable rod (11) moves axially and abuts against the outer side of the bending plate (6), the radial component force generated at the end of the movable rod (11) pushes the bending plate (6) to rotate around the connector.
2. The PE pipe end fitting according to claim 1, characterized in that, The end of the limiting block (7) is provided with a friction pad (9), and the working surface of the friction pad (9) protrudes from the end face of the limiting block (7).
3. A PE pipe end fitting according to claim 2, characterized in that, At least one set of anti-slip posts (8) are symmetrically arranged on both sides of the clamping end face of the limiting block (7), and the anti-slip posts (8) cooperate with the friction pad (9).
4. A PE pipe end fitting according to claim 1, characterized in that, An installation sleeve (2) is fixedly connected to the outer wall of the limiting cylinder (1). A through hole (3) is provided on the installation sleeve (2). The connecting member includes a connecting rod (4) fixedly connected to the through hole (3). The clamping plate (5) is rotatably connected to the connecting rod (4). The bending plate (6) is connected to the inner wall of the limiting cylinder (1) through a limiting spring (10).
5. A PE pipe end mill according to claim 4, characterized in that, The clamping plate (5) is provided in multiple sets, and the multiple sets of clamping plates (5) are evenly distributed along the circumferential direction of the limiting cylinder (1).
6. A PE pipe end fitting according to claim 1, characterized in that, The opening end of the limiting cylinder (1) is provided with a limiting nut (15), the movable rod (11) is threadedly connected to the limiting nut (15) through the threaded groove (14), and a limiting ring (12) is provided on the outer wall of the movable rod (11), the limiting ring (12) is in contact with the inner wall of the limiting cylinder (1).
7. A PE pipe end fitting according to claim 6, characterized in that, A torsion bar (13) is fixedly connected to the movable rod (11).
8. A PE pipe end fitting according to claim 6, characterized in that, A mounting ring (16) is fixedly connected to the limiting nut (15), a connecting plate (17) is rotatably connected to the mounting ring (16), a limiting box (18) is fixedly connected to the connecting plate (17), a limiting rod (21) is slidably connected to the limiting box (18), and a moving wheel (22) is provided on the top of the limiting rod (21).
9. A PE pipe end fitting according to claim 8, characterized in that, The limiting box (18) is provided with a sliding groove (19), and a movable plate (20) is slidably connected to the sliding groove (19). The limiting rod (21) is fixedly connected to the top of the movable plate (20), and the bottom of the movable plate (20) is fixedly connected to the bottom of the limiting box (18) through a return spring (23).
10. A PE pipe end fitting according to claim 3, characterized in that, The anti-slip post (8) and the friction pad (9) are made of rubber or silicone.