A PVC pipe joint surface polishing tool
By designing a grinding tool suitable for PVC pipe joints and adopting a combination structure of drive shaft and abrasive belt, efficient grinding of different pipe materials is achieved, solving the problem of insufficient compatibility of existing equipment and improving construction efficiency and equipment versatility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI XINGDINGDANG PLASTIC CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing pipe grinding equipment is not sufficiently adaptable to the size of PVC pipe joints of different diameters, requiring complete equipment replacement or complex adjustments, which affects construction efficiency and increases costs.
A surface grinding tool for PVC pipe joints was designed. It adopts a tensioning mechanism of a first drive shaft, a second drive shaft and a grinding belt, and performs surface cutting and grinding in combination with abrasive particles on the grinding belt. The grinding belt can be quickly installed and removed by setting up a connecting block, a circular baffle and a pin.
The equipment's versatility has been improved, enabling it to grind pipes of different shapes and specifications, reducing the time required to replace the abrasive belt, and increasing construction efficiency.
Smart Images
Figure CN224488668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe joint grinding technology, and more specifically, to a surface grinding tool for PVC pipe joints. Background Technology
[0002] PVC pipes are widely used in building water supply and drainage, municipal engineering, and agricultural irrigation due to their advantages such as low cost, corrosion resistance, and easy installation. The connection quality of PVC pipes directly determines the sealing performance and service life of the entire pipeline system. Among these factors, the surface treatment of the joints is crucial. If the joint surface has defects such as burrs, protrusions, or unevenness, it will lead to uneven glue distribution during bonding or poor adhesion of the welded surfaces, resulting in problems such as leakage and pressure loss.
[0003] Existing publication number CN201261151Y discloses an adaptive pipe cutting and grinding tool, including a connector seat connected to a power source. The connector seat has an annular groove with a boss at its top. A sleeve with a base is connected above the connector seat. The base has a through hole communicating with the groove. Two limiting blocks are symmetrically arranged on both sides of the through hole. Longitudinal elongated through holes are respectively formed at the corresponding positions of the two limiting blocks and the sleeve. Two bolts with wing nuts pass through the two pairs of elongated through holes to connect an A-shaped inner mold. A sanding strip is provided on the upper surface of the A-shaped inner mold, and its lower end is connected to the boss in the annular groove via a spring. A V-shaped outer mold, composed of two halves, is arranged in a cross shape with the A-shaped inner mold. The V-shaped outer mold is fixed to the base, and a sanding strip is provided on its upper surface. This tool can adapt to different pipe diameters and wall thicknesses, achieving simultaneous grinding of the inner and outer cuts of the pipe. It is highly efficient, versatile, effectively prevents grinding debris from splashing, reduces dust, and improves safety. The inventors discovered the following problems with the existing technology during the development of this utility model:
[0004] Existing pipe grinding equipment has significant limitations in size adaptability when grinding different pipe joints, and most can only grind PVC pipe joints of a single diameter. The positioning structure and grinding head size of this type of equipment are fixed. If different specifications of joints are changed, the entire equipment needs to be replaced or complex adjustments need to be made, which not only increases the equipment investment cost, but also seriously affects the construction efficiency.
[0005] Therefore, a surface grinding tool for PVC pipe joints is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a PVC pipe joint surface grinding tool to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a PVC pipe joint surface grinding tool, comprising a mounting frame, wherein a rotating shaft is mounted in the middle of the mounting frame; a first movable plate and a second movable plate are rotatably connected to the surface of the rotating shaft; the first movable plate is located on the side wall of the second movable plate; a first drive shaft is mounted at the end of the first movable plate; a second drive shaft is mounted at the end of the second movable plate; an abrasive belt is mounted in the middle of the second drive shaft and the first drive shaft; the abrasive belt slides on the surfaces of the second drive shaft and the first drive shaft.
[0008] Preferably, the first drive shaft and the second drive shaft are fixedly connected to each other with a connecting block; a circular baffle is slidably connected to the surface of the connecting block; a circular hole is opened in the middle of the circular baffle; the connecting block slides in the middle of the circular hole.
[0009] Preferably, the connecting block has a slot at its top; the slot is located at the top of the circular baffle; and a pin is slidably connected to the middle of the slot.
[0010] Preferably, the end of the pin is fixed with two limiting plates; the limiting plates are triangular in shape.
[0011] Preferably, two positioning plates are mounted on the surface of the rotating shaft; a sliding groove is formed in the middle of the positioning plate; the first movable plate and the second movable plate slide in the middle of the sliding groove; the positioning plate and the mounting frame are fixedly connected.
[0012] Preferably, a handrail is fixed to the side wall of the mounting bracket; the surface of the handrail is provided with multiple anti-slip textures.
[0013] Preferably, a square baffle is fixed to the top of the handrail; the square baffle is located at the middle of the mounting frame and the handrail.
[0014] Preferably, a rubber pad is fixedly attached to the surface of the handrail; a base is fixedly attached to the bottom of the handrail.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] 1. Compared with the prior art, this PVC pipe joint surface grinding tool is equipped with a first drive shaft, a second drive shaft, a grinding belt, etc., and uses a tensioning mechanism to make the grinding belt closely fit the workpiece surface. The surface cutting and grinding is achieved by the relative friction between the abrasive particles on the grinding belt and the workpiece. At the same time, it can grind pipes of different shapes and specifications, further improving the versatility of the equipment.
[0017] 2. Compared with the existing technology, this PVC pipe joint surface grinding tool is equipped with a connecting block, a circular baffle, and a pin. After the abrasive belt is installed, the connecting block passes through the center of the circular hole and is then fixed. The pin then passes through the center of the slot to limit the circular baffle. When the pin enters the center of the slot, the limiting plate is stuck on the outer wall of the connecting block to limit the pin. This setting can realize the quick disassembly and installation of the abrasive belt, further reducing the problem of long downtime due to equipment replacement of the abrasive belt, which affects the construction efficiency. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 This is a schematic diagram of the structure of the abrasive belt of this utility model.
[0020] Figure 3 This is a schematic diagram of the structure of the circular baffle of this utility model.
[0021] Figure 4 This is a schematic diagram of the positioning plate of this utility model.
[0022] The attached diagram is labeled as follows: 1. Mounting bracket; 11. Rotating shaft; 12. First hinged plate; 13. Second hinged plate; 14. First drive shaft; 15. Second drive shaft; 16. Frosted belt; 2. Connecting block; 21. Circular baffle; 22. Circular hole; 3. Slot; 31. Pin; 4. Limiting plate; 5. Positioning plate; 51. Slide groove; 6. Handrail; 61. Anti-slip texture; 7. Square baffle; 8. Rubber pad; 81. Base support. Detailed Implementation
[0023] 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.
[0024] Example 1
[0025] As attached Figures 1 to 4The tool shown is a surface polishing tool for PVC pipe joints, including a mounting frame 1. A rotating shaft 11 is mounted in the middle of the mounting frame 1. A first movable plate 12 and a second movable plate 13 are rotatably connected to the surface of the rotating shaft 11. The first movable plate 12 is located on the side wall of the second movable plate 13. A first drive shaft 14 is mounted at the end of the first movable plate 12. A second drive shaft 15 is mounted at the end of the second movable plate 13. An abrasive belt 16 is mounted in the middle of the second drive shaft 15 and the first drive shaft 14. The abrasive belt 16 slides on the surfaces of the second drive shaft 15 and the first drive shaft 14.
[0026] Specifically: When grinding pipe joints, the abrasive belt 16 is first installed in the middle of the first drive shaft 14 and the second drive shaft 15. Then, the motor inside the mounting bracket 1 is started, which drives the first drive shaft 14 and the second drive shaft 15 to rotate. At this time, the abrasive belt 16 can be driven to rotate at high speed. Then, the abrasive belt 16 contacts the part of the pipe that needs to be ground. At this time, the first movable plate 12 and the second movable plate 13 rotate on the surface of the rotating shaft 11. At the same time, the first movable plate 12 moves upward, so that the abrasive belt 16 can fit the shape of the pipe and grind it. This setting can grind pipes of various shapes and grind uneven parts at various angles.
[0027] Example 2
[0028] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:
[0029] In a preferred embodiment, a connecting block 2 is fixedly connected to the ends of the first drive shaft 14 and the second drive shaft 15; after the abrasive belt 16 is installed, a circular baffle 21 is slidably connected to the surface of the connecting block 2; a circular hole 22 is opened in the middle of the circular baffle 21; the circular baffle 21 is installed in the middle of the connecting block 2; the connecting block 2 slides in the middle of the circular hole 22; at this time, the connecting block 2 passes through the middle of the circular hole 22 and is then fixed.
[0030] In a preferred embodiment, the top of the connecting block 2 is provided with a slot 3; then the pin 31 passes through the middle of the slot 3; the slot 3 is located at the top of the circular baffle 21; the pin 31 is slidably connected to the middle of the slot 3; thus limiting the circular baffle 21.
[0031] In a preferred embodiment, two limiting plates 4 are fixedly connected to the end of the pin 31; when the pin 31 enters the middle of the slot 3, the limiting plates 4 are stuck on the outer wall of the connecting block 2; the limiting plates 4 are triangular in shape; they can limit the pin 31 and prevent it from falling off due to the high-speed rotation of the first drive shaft 14 during operation.
[0032] In a preferred embodiment, two positioning plates 5 are mounted on the surface of the rotating shaft 11; the positioning plates 5 remain in their original positions when the second movable plate 13 and the first movable plate 12 move; a sliding groove 51 is provided in the middle of the positioning plate 5; the positioning plate 5 can restrict the second movable plate 13 and the first movable plate 12 to move in the middle of the sliding groove 51; the first movable plate 12 and the second movable plate 13 slide in the middle of the sliding groove 51; the positioning plate 5 is fixedly connected to the mounting bracket 1; the positioning plate 5 restricts its movement within a preset range and uses its own structure to prevent the components from moving beyond their travel range.
[0033] In a preferred embodiment, a handrail 6 is fixedly connected to the side wall of the mounting bracket 1; the surface of the abrasive belt 16 can be brought closer to the surface of the pipe for polishing by pressing the handrail 6; multiple anti-slip textures 61 are formed on the surface of the handrail 6; the anti-slip textures 61 can increase the surface roughness of the handrail 6 and prevent slippage during the polishing process.
[0034] In a preferred embodiment, a square baffle 7 is fixed to the top of the handrail 6; a large amount of high-temperature flying debris will be generated during the grinding process; the square baffle 7 is located in the middle of the mounting frame 1 and the handrail 6; the square baffle 7 can block this flying debris and prevent it from causing burns to the hands.
[0035] As a preferred embodiment, a rubber pad 8 is fixedly attached to the surface of the handrail 6; the rubber pad 8 can conform to the contour of the hand through its own deformation, disperse the pressure on the hand, and reduce the feeling of local pressure; a base support 81 is fixedly attached to the bottom of the handrail 6; this can reduce fatigue and indentations caused by prolonged lifting.
[0036] In this embodiment, the abrasive belt 16, the rotating shaft 11, etc. are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here, we are only using them without making any structural or functional improvements, and we will not go into detail here.
[0037] The working process of this utility model is as follows: When grinding the pipe joint, firstly, the abrasive belt 16 is installed in the middle of the first drive shaft 14 and the second drive shaft 15. After the abrasive belt 16 is installed, the connecting block 2 passes through the middle of the circular hole 22 and is then fixed. Then, the pin 31 passes through the middle of the slot 3 to limit the circular baffle 21. When the pin 31 enters the middle of the slot 3, the limiting plate 4 is stuck on the outer wall of the connecting block 2, which can limit the pin 31 and prevent it from falling off due to the high-speed rotation of the first drive shaft 14 during operation. Then, the motor inside the mounting bracket 1 is started to drive the first drive shaft 14 and the second drive shaft 15 to rotate. At this time, the abrasive belt 16 can be driven to rotate at high speed. By pressing the handle 6, the surface of the abrasive belt 16 is brought closer to the pipe. The surface of the material is polished. At this time, the anti-slip texture 61 can increase the surface roughness of the handle 6. At this time, the first movable plate 12 and the second movable plate 13 rotate on the surface of the rotating shaft 11. At the same time, the first movable plate 12 moves upward. When the second movable plate 13 and the first movable plate 12 move, the positioning plate 5 remains in the original position. The positioning plate 5 restricts its movement within a preset range in the middle of the slide groove 51. By using its own structure to prevent the components from moving beyond their travel range, the abrasive belt 16 can fit the shape of the pipe and polish it. At the same time, the square baffle 7 can block the flying debris generated by polishing to avoid burning the hands. The rubber pad 8 conforms to the contour of the hand through its own deformation, disperses the hand pressure, and reduces the local pressure. The above is the working principle of this PVC pipe joint surface polishing tool.
Claims
1. A surface polishing tool for PVC pipe joints, comprising a mounting bracket (1), characterized in that: A rotating shaft (11) is installed in the middle of the mounting bracket (1); a first movable plate (12) and a second movable plate (13) are rotatably connected to the surface of the rotating shaft (11); the first movable plate (12) is located on the side wall of the second movable plate (13); a first drive shaft (14) is installed at the end of the first movable plate (12); a second drive shaft (15) is installed at the end of the second movable plate (13); an abrasive belt (16) is installed in the middle of the second drive shaft (15) and the first drive shaft (14); the abrasive belt (16) slides on the surfaces of the second drive shaft (15) and the first drive shaft (14).
2. The PVC pipe joint surface polishing tool according to claim 1, characterized in that: The first drive shaft (14) and the second drive shaft (15) are fixedly connected to a connecting block (2); a circular baffle (21) is slidably connected to the surface of the connecting block (2); a circular hole (22) is opened in the middle of the circular baffle (21); the connecting block (2) slides in the middle of the circular hole (22).
3. The PVC pipe joint surface polishing tool according to claim 2, characterized in that: The connecting block (2) has a slot (3) at the top; the slot (3) is located at the top of the circular baffle (21); a pin (31) is slidably connected in the middle of the slot (3).
4. The PVC pipe joint surface polishing tool according to claim 3, characterized in that: The pin (31) has two limiting plates (4) fixedly attached to its end; the limiting plates (4) are triangular in shape.
5. A surface polishing tool for PVC pipe joints according to claim 1, characterized in that: Two positioning plates (5) are installed on the surface of the rotating shaft (11); a sliding groove (51) is provided in the middle of the positioning plate (5); the first movable plate (12) and the second movable plate (13) slide in the middle of the sliding groove (51); the positioning plate (5) and the mounting bracket (1) are fixedly connected.
6. A surface polishing tool for PVC pipe joints according to claim 4, characterized in that: The mounting bracket (1) has a handrail (6) fixed to its side wall; the handrail (6) has multiple anti-slip textures (61) on its surface.
7. A surface polishing tool for PVC pipe joints according to claim 6, characterized in that: A square baffle (7) is fixed to the top of the handrail (6); the square baffle (7) is located in the middle of the mounting frame (1) and the handrail (6).
8. A surface polishing tool for PVC pipe joints according to claim 7, characterized in that: A rubber pad (8) is fixed to the surface of the handrail (6); a base support (81) is fixed to the bottom of the handrail (6).