A pipe orifice polishing device for PVC pipe processing

Abstract

The application relates to the technical field of polishing equipment, and discloses a pipe opening polishing equipment for PVC pipe processing, which comprises an outer shell, an input shaft and a driving device for driving the input shaft to rotate, a rotating cylinder is arranged in the outer shell, the input shaft penetrates through the outer shell and the rotating cylinder and is in transmission connection with a parallel displacement coupling in the rotating cylinder, the outer shell and the rotating cylinder are assembled on the input shaft through bearings, the bottom of the rotating cylinder is provided with a radial sliding groove, the rotating cylinder is slidably connected with a sliding block through the sliding groove, the sliding block is movably connected with a driving shaft, the driving shaft penetrates through the sliding block, and the driving shaft is in transmission connection with a rotating shaft. The polishing column in the pipe opening polishing equipment for PVC pipe processing moves radially under the action of magnetic force, the moving direction of the polishing column is adjusted by adjusting the installation position of the suction column, the polishing column is automatically attached to the pipe wall, the outer wall of the pipe opening can be conveniently polished, the inner wall of the pipe opening can also be conveniently polished, and the pipe opening polishing equipment is more suitable for actual work requirements.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a pipe end grinding device for PVC pipe processing. Background Technology

[0002] PVC pipes are widely used in construction, agriculture, industry, and home decoration due to their excellent properties. During assembly, the pipe ends need to be ground. This grinding is an important measure to improve sealing, safety, construction quality, and reduce maintenance costs. At the same time, grinding also enhances adhesion and improves aesthetics.

[0003] Since PVC pipe fittings are generally external fittings, most PVC pipe grinding tools are designed to grind the outer wall of PVC pipes, but are not convenient enough for grinding the inner wall. Due to external installation limitations, in some cases it is necessary to use internal fittings to connect PVC pipes. Therefore, a tool that can easily grind the inner and outer walls of PVC pipes is needed.

[0004] Secondly, existing PVC pipe grinding tools are usually operated manually. When grinding the PVC pipe ends, the pressure applied at different locations is different, resulting in uneven grinding and poor consistency. Summary of the Invention

[0005] This application proposes a pipe end grinding device for PVC pipe processing. The grinding column moves radially under the action of magnetic attraction and can automatically stick to the pipe wall, which can not only conveniently grind the outer wall of the pipe end, but also make the grinding more uniform and consistent.

[0006] To achieve the above objectives, this application adopts the following technical solution: a PVC pipe end grinding device, comprising a housing, an input shaft, and a drive device for rotating the input shaft. A rotating cylinder is housed within the housing. The input shaft passes through the housing and the rotating cylinder and is connected to a parallel displacement coupling inside the rotating cylinder. The housing and the rotating cylinder are mounted on the input shaft via bearings. A radial sliding groove is provided at the bottom of the rotating cylinder. A sliding block is slidably connected to the rotating cylinder via the sliding groove. A drive shaft is movably connected to the sliding block, passing through the sliding block. A rotating shaft is drively connected to the drive shaft and is mounted on the sliding block via bearings. A grinding column is fixedly connected to the shaft. The input shaft is connected to the drive shaft through a parallel displacement coupling. Two sets of connecting parts are provided at the bottom of the rotating cylinder, and the two sets of connecting parts are located at both ends of the sliding groove. The rotating cylinder is connected to a suction column through the connecting parts. The suction column can be selectively installed on one of the connecting parts. A front magnet is installed on the sliding block. A drive magnet corresponding to the front magnet is installed on the suction column. The front magnet and the drive magnet exert a suction force. An adjusting wheel is provided at the top of the rotating cylinder. An internal gear ring is provided on the inner ring of the outer shell. The internal gear ring meshes with the adjusting wheel. A drive wheel is provided on the input shaft. The drive wheel is connected to the adjusting wheel through a transmission assembly.

[0007] Furthermore, the connector has a threaded mounting hole on its inner wall, the curvature of which exceeds a certain degree, allowing the sliding block to slide into the mounting hole. When the sliding block slides into the connector, a portion of the sliding block remains attached to the sliding groove.

[0008] Furthermore, a flexible coupling is provided between the drive shaft and the rotating shaft, the rotating shaft is connected to the sliding block through a self-aligning bearing, the end of the rotating shaft is connected to a rear magnet through a rotating sleeve, and a drive magnet corresponding to the rear magnet is provided on the suction column.

[0009] Furthermore, a shielding plate is provided at the bottom of the suction column, and the shielding plate is slidably connected to the suction column. The shielding plate has a window that exposes the driving magnet, so that the driving magnet is exposed during polishing.

[0010] Furthermore, the shielding plate is connected to a baffle, and the suction column is provided with a receiving groove that can accommodate a part of the shielding plate. When the grinding column moves along the axial direction of the pipe opening, the baffle is blocked by the pipe opening. After sliding towards the receiving groove, the window on the shielding plate merges with the driving magnet.

[0011] Furthermore, the portion of the shielding plate located inside the receiving groove is connected to a limiting block. The receiving groove is provided with a protrusion that can hold the limiting block in place. The limiting block is connected to a spring that can move the limiting block outward. One side of the receiving groove is provided with an actuating rod that can push the limiting block out of the protrusion and restrict it.

[0012] Furthermore, the top of the limiting block is provided with an elastic pad.

[0013] Furthermore, the actuating rod corresponds to the sliding block. When the sliding block moves upward under the action of magnetic attraction, the sliding block moves against the actuating rod, lifting the limiting block.

[0014] The beneficial effects of this invention are:

[0015] This application provides a PVC pipe end grinding device. The grinding column moves radially under the action of magnetic attraction. The direction of movement of the grinding column can be adjusted by adjusting the installation position of the attraction column, so that it automatically adheres to the pipe wall. It can conveniently grind both the outer and inner walls of the pipe end, and is more suitable for actual work needs.

[0016] During grinding, grinding pressure is applied through magnetic attraction, and the grinding column can adhere to the pipe wall, resulting in more uniform grinding. In addition, only the position of the grinding equipment needs to be set during grinding, and the rest of the grinding process is automatically completed, which saves physical labor and makes the grinding more consistent. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of the embodiments disclosed in this application.

[0018] Referring to the accompanying drawings and the following detailed description, the embodiments disclosed in this application can be understood more clearly, wherein:

[0019] Figure 1 This is a side view of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the top of the rotating cylinder in this invention;

[0022] Figure 4 This is a bottom view from the inside of the rotating cylinder in this invention;

[0023] Figure 5 This is a schematic diagram of the bottom of the rotating cylinder from an external perspective in this invention;

[0024] Figure 6 For the present invention Figure 1 Enlarged view of A in the middle;

[0025] Figure 7 This is a schematic diagram of the shielding plate in this invention.

[0026] In the diagram: 1. Handle; 2. Input shaft; 3. Housing; 4. Rotating cylinder; 5. Sliding block; 6. Drive shaft; 7. Parallel displacement coupling; 8. Front magnet; 9. Suction column; 10. Drive magnet; 11. Connecting piece; 12. Sliding groove; 13. Rotating shaft; 14. Grinding column; 15. Rotating sleeve; 16. Rear magnet; 17. Self-aligning bearing; 18. Flexible coupling; 19. Shielding plate; 20. Internal gear ring; 21. Drive wheel; 22. Adjusting wheel; 23. Transmission assembly; 24. Baffle; 25. Actuating rod; 26. Elastic pad; 27. Limiting block; 28. Spring; 29. ​​Receiving groove. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Example 1

[0029] Please see Figures 1-5A PVC pipe end grinding device includes a handle 1 with an internal drive motor, an input shaft 2 connected to the handle 1, and a housing 3 connected to the handle 1. The input shaft 2 passes through the housing 3 and a rotating cylinder 4, and is connected to a parallel displacement coupling 7 inside the rotating cylinder 4. The housing 3 is fixedly connected to the handle 1 and does not rotate. The housing 3 and the rotating cylinder 4 are mounted on the input shaft 2 via bearings. The bottom of the rotating cylinder 4 has a radial sliding groove 12, and a sliding block 5 is slidably connected to the rotating cylinder 4 through the sliding groove 12. The sliding block 5 can slide radially. A drive shaft 6 is movably connected to the sliding block 5, passing through the sliding block 5. A bearing is provided between the sliding block 5 and the drive shaft 6. The drive shaft 6 is connected to a rotating shaft 13, which is driven by... The bearing is mounted on the sliding block 5. The rotating shaft 13 is fixedly connected to the grinding column 14. The input shaft 2 is connected to the drive shaft 6 through the parallel displacement coupling 7. The input shaft 2 drives the drive shaft 6 to rotate through the parallel displacement coupling 7, which in turn drives the rotating shaft 13 and the grinding column 14 to rotate. In this embodiment, the parallel displacement coupling 7 is a Schmidt coupling. The bottom of the rotating cylinder 4 is provided with two sets of connecting parts 11. The two sets of connecting parts 11 are located at both ends of the sliding groove 12. The rotating cylinder 4 is connected to the suction column 9 through the connecting parts 11. The suction column 9 can be selectively installed on one of the connecting parts 11. When grinding the inner wall of the pipe opening, the suction column 9 is installed on the connecting part 11 on the outer edge. When grinding the outer wall of the pipe opening, the suction column 9 is installed on the connecting part 11 in the center. The connecting part 11 has threads on its inner wall. The mounting hole has an arc exceeding 180 degrees to ensure that the suction column 9 will not fall off. Simultaneously, the sliding block 5 can slide into the mounting hole, preventing the connector 11 from occupying the sliding space of the sliding block 5. The height of the notch at the connector 11 is less than the height of the sliding block 5. When the sliding block 5 slides into the connector 11, a portion of the sliding block 5 remains attached to the sliding groove 12, ensuring normal sliding of the sliding block 5. A front magnet 8 is mounted on the sliding block 5, and a driving magnet 10 corresponding to the front magnet 8 is mounted on the suction column 9. The front magnet 8 and the driving magnet 10 exert a suction force. During polishing, the suction column 9 and the polishing column 14 are located on the inner and outer sides of the PVC pipe, respectively. The suction force keeps the polishing column 14 tightly against the side wall of the PVC pipe, resulting in uniform and controllable pressure from the PVC pipe against the pipe wall. A rotary rod (not shown) can be installed on the 10 to adjust the position of the drive magnet 10, thereby adjusting the attraction between the drive magnet 10 and the front magnet 8. An adjusting wheel 22 is provided on the top of the rotating cylinder 4, and an internal gear ring 20 is provided on the inner ring of the outer casing 3. The internal gear ring 20 meshes with the adjusting wheel 22. A drive wheel 21 is provided on the input shaft 2, and the drive wheel 21 is connected to the adjusting wheel 22 via a transmission assembly 23. When the input shaft 2 rotates, it simultaneously drives the adjusting wheel 22 to rotate. The interaction between the adjusting wheel 22 and the internal gear ring 20 drives the rotating cylinder 4 to rotate, thereby adjusting the circumferential position of the grinding column 14. In this embodiment, the transmission assembly 23 is a conveyor belt; in other embodiments, the transmission assembly 23 can be a gear set; in other embodiments, the handle 1 may not be provided.By holding the outer casing 3 to prevent it from rotating, and then driving the input shaft 2 to rotate via an external device, such as a hand drill,...

[0030] Please see Figure 1 and Figure 6 A flexible coupling 18 is provided between the drive shaft 6 and the rotating shaft 13. The rotating shaft 13 is connected to the sliding block 5 through the self-aligning bearing 17. The end of the rotating shaft 13 is connected to the rear magnet 16 through the rotating sleeve 15. The suction column 9 is provided with a drive magnet 10 corresponding to the rear magnet 16. During grinding, the grinding column 14 is pressed against the pipe wall by the attraction force of the rear magnet 16 and the front magnet 8. At the same time, since the rotating shaft 13 can rotate, it is ensured that even if the drive shaft 6 is not parallel to the PVC pipe, the rotating shaft 13 is still parallel to the axis of the PVC pipe, ensuring the uniformity and quality of grinding. In this embodiment, the flexible coupling 18 is a permanent magnet coupling. In other embodiments, the flexible coupling 18 can also be an elastic movable coupling, a diaphragm coupling, or other couplings with a certain compensation offset capability.

[0031] Please see Figure 1 , Figure 6 and Figure 7 The bottom of the suction column 9 is provided with a shielding plate 19, which is slidably connected to the suction column 9. The shielding plate 19 has a window that allows the driving magnet 10 to be exposed. During polishing, the driving magnet 10 is exposed. After polishing, the shielding plate 19 covers the driving magnet 10 to prevent the driving magnet 10 from being attracted to the front magnet 8.

[0032] The shielding plate 19 is connected to the baffle 24. The suction column 9 is provided with a receiving groove 29 that can accommodate a part of the shielding plate 19. When the grinding column 14 moves along the pipe opening axis, the baffle 24 is blocked by the pipe opening and slides toward the receiving groove 29. The window on the shielding plate 19 coincides with the driving magnet 10, the driving magnet 10 is exposed, and the grinding column 14 is pressed against the pipe wall under the action of magnetic force.

[0033] The portion of the shielding plate 19 located inside the receiving groove 29 is connected to a limiting block 27. The receiving groove 29 has a protrusion that can hold the limiting block 27 in place. The limiting block 27 is connected to a spring 28 that can move the limiting block 27 outward. One side of the receiving groove 29 has an actuating rod 25 that can push the limiting block 27 out of the protrusion and restrict it. During grinding, the baffle 24 interacts with the pipe opening to push the shielding plate 19 to move. When the limiting block 27 moves into the receiving groove 29, it is held in place by the protrusion, preventing the shielding plate 19 from popping out. At this time, the grinding equipment is moved slightly backward to disengage the baffle 24 from the pipe opening, preventing the baffle 24 from rotating against the pipe opening and affecting the rotation of the rotating cylinder 4.

[0034] To improve the reliability of the protrusion limiting the limit block 27, the top of the limit block 27 is provided with an elastic pad 26. The elasticity of the pad 26 prevents the limit block 27 from lifting under vibration. At the same time, under the action of the trigger rod 25, the elasticity of the pad 26 can be overcome, allowing the limit block 27 to lift.

[0035] The trigger rod 25 corresponds to the sliding block 5. When the sliding block 5 moves upward under the action of magnetic attraction, the sliding block 5 moves against the trigger rod 25, pushing up the limit block 27, causing the shielding plate 19 to be ejected, isolating the magnetic field. That is, after the grinding is completed, after the obstruction of the tube wall is removed, the sliding block 5 moves towards the suction column 9, triggering the shielding plate 19 to be ejected before the front magnet 8, rear magnet 16 and driving magnet 10 come into contact, isolating the magnetic field, thereby preventing the suction column 9 and the grinding column 14 from being attracted together.

[0036] During grinding, the suction column 9 is installed. When grinding the inner wall of the pipe opening, the suction column 9 is installed on the connecting piece 11 on the outer edge. When grinding the outer wall of the pipe opening, the suction column 9 is installed on the connecting piece 11 at the center. The grinding equipment is moved along the pipe opening axis. The baffle 24 contacts the pipe opening and pushes the shielding plate 19 to move, so that the driving magnet 10 is exposed. The driving magnet 10 applies a suction force to the rear magnet 16 and the front magnet 8, driving the grinding column 14 and the sliding block 5 to move towards the pipe wall. Due to the action of the self-aligning bearing 17, the grinding column 14 can be completely pressed against the inner wall of the pipe opening, reducing the requirement for the insertion angle of the grinding column 14. The grinding equipment is started. The input shaft 2 drives the drive shaft 6 to rotate through the parallel displacement coupling 7. The drive shaft 6 drives the rotating shaft 13 to rotate through the flexible coupling 18 to realize grinding. At the same time, the input shaft 2 also drives the rotating cylinder 4 to rotate through the drive wheel 21 and the adjusting wheel 22, changing the grinding position at a uniform speed.

Claims

1. A pipe end grinding device for PVC pipe processing, comprising a housing (3), an input shaft (2), and a drive device for driving the input shaft (2) to rotate, characterized in that, The outer casing (3) contains a rotating cylinder (4). The input shaft (2) passes through the outer casing (3) and the rotating cylinder (4) and is connected to the parallel displacement coupling (7) inside the rotating cylinder (4). The outer casing (3) and the rotating cylinder (4) are mounted on the input shaft (2) by bearings. The bottom of the rotating cylinder (4) is provided with a radial sliding groove (12). The rotating cylinder (4) is slidably connected to a sliding block (5) through the sliding groove (12). The sliding block (5) is movably connected to a drive shaft (6). The drive shaft (6) passes through the sliding block (5). The drive shaft (6) is connected to a rotating shaft (13). The rotating shaft (13) is mounted on the sliding block (5) by bearings. The rotating shaft (13) is fixedly connected to a grinding column (14). The input shaft (2) is connected to the drive shaft (6) through the parallel displacement coupling (7). The bottom of the rotating cylinder (4) is provided with two sets of connecting parts (11), which are located at both ends of the sliding groove (12). The rotating cylinder (4) is connected to a suction column (9) through the connecting parts (11). The suction column (9) can be selectively installed on one of the connecting parts (11). A front magnet (8) is installed on the sliding block (5). A driving magnet (10) corresponding to the front magnet (8) is installed on the suction column (9). The front magnet (8) and the driving magnet (10) exhibit attraction. An adjusting wheel (22) is provided on the top of the rotating cylinder (4). An internal gear ring (20) is provided on the inner ring of the outer shell (3). The internal gear ring (20) meshes with the adjusting wheel (22). A driving wheel (21) is provided on the input shaft (2). The driving wheel (21) is connected to the adjusting wheel (22) through a transmission assembly (23).

2. The pipe end grinding equipment for PVC pipe processing according to claim 1, characterized in that, The connector (11) has a threaded mounting hole on its inner wall. The arc of the hole exceeds 180 degrees. The sliding block (5) can slide into the mounting hole. When the sliding block (5) slides into the connector (11), a part of the sliding block (5) is still not disengaged from the sliding groove (12).

3. The pipe end grinding equipment for PVC pipe processing according to claim 1, characterized in that, A flexible coupling (18) is provided between the drive shaft (6) and the rotating shaft (13). The rotating shaft (13) is connected to the sliding block (5) through the self-aligning bearing (17). The end of the rotating shaft (13) is connected to the rear magnet (16) through the rotating sleeve (15). The suction column (9) is provided with a drive magnet (10) corresponding to the rear magnet (16).

4. The pipe end grinding equipment for PVC pipe processing according to claim 3, characterized in that, The bottom of the suction column (9) is provided with a shielding plate (19), which is slidably connected to the suction column (9). The shielding plate (19) has a window that exposes the driving magnet (10) so that the driving magnet (10) can be exposed during polishing.

5. The pipe end grinding equipment for PVC pipe processing according to claim 4, characterized in that, The shielding plate (19) is connected to a baffle (24). The suction column (9) is provided with a receiving groove (29) that can accommodate a part of the shielding plate (19). When the grinding column (14) moves along the axial direction of the pipe opening, the baffle (24) is blocked by the pipe opening. After sliding towards the receiving groove (29), the window on the shielding plate (19) coincides with the driving magnet (10).

6. The pipe end grinding equipment for PVC pipe processing according to claim 5, characterized in that, The shielding plate (19) is connected to a limiting block (27) inside the receiving groove (29). The receiving groove (29) is provided with a protrusion that can hold the limiting block (27). The limiting block (27) is connected to a spring (28) that can move the limiting block (27) outward. One side of the receiving groove (29) is provided with an actuating rod (25) that can push the limiting block (27) out of the protrusion.

7. The pipe end grinding equipment for PVC pipe processing according to claim 6, characterized in that, The top of the limiting block (27) is provided with an elastic pad (26).

8. The pipe end grinding equipment for PVC pipe processing according to claim 6, characterized in that, The trigger rod (25) corresponds to the sliding block (5). When the sliding block (5) moves upward under the action of magnetic attraction, the sliding block (5) moves against the trigger rod (25) and lifts the limiting block (27).

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