Rapid grinding equipment for machining inner wall of PVC water supply pipeline

Abstract

The invention discloses rapid polishing equipment for machining the inner wall of a PVC water supply pipeline, relates to the technical field of polishing of the inner wall of the PVC water supply pipeline, and aims at solving the problems that the polishing efficiency of the inner wall of the PVC water supply pipeline is low and the inner wall of the pipeline is not uniform in the overall polishing process. The height-controllable abutting rollers drive the water supply pipeline to move and cooperate with the transmission rollers at the bottom of the transmission box to abut against the outer wall of the water supply pipeline and rotate the water supply pipeline, and then the penetrating integral sand sleeve makes contact with the inner wall of the water supply pipeline under the control of the telescopic table; meanwhile, a worm in the fixed box is driven to rotate through rotation of a worm, an eccentric wheel located at the end of the worm movably pulls a clamping sleeve connected with a sliding sleeve in a clamped mode to move front and back, and front-back rotation grinding of the sand sleeve on the inner wall of the water supply pipeline is achieved; and the inner wall of the treated water supply pipeline is more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of inner wall grinding of PVC water supply pipes, in particular to a fast grinding device used for inner wall processing of PVC water supply pipes. Background Art

[0002] The water supply pipe is made of sanitary polyvinyl chloride (PVC) resin as the main raw material, with appropriate amount of stabilizer, lubricant, filler, color enhancer, etc., extruded by plastic extruder and injection molded by injection molding machine, and completed through cooling, curing, shaping, inspection, packaging and other processes to produce pipes and pipe fittings;

[0003] Common pipeline inner wall grinding uses a support rod to drive the grinding head to move and grind along the inner wall of the pipeline. According to the patent with publication number CN117260417A, the support tube and the driving part are set, and the high-pressure gas delivered by the support tube is used in conjunction with the driving part to drive the grinding head to rotate at high speed, so that the support tube does not need to rotate during the entire grinding process. Therefore, the grinding head will not shake due to the excessive length of the support tube when rotating at high speed, thereby improving the grinding quality of the inner surface of the pipeline, improving the qualified rate of the product, and reducing the wear of the grinding head. However, for the point-to-surface combined grinding method of spiral advancement, the grinding efficiency is low. At the same time, the overall strip-surface combined PVC water supply pipeline grinding is performed. Considering that the newly installed grinding mechanism has uneven inner wall of the PVC water supply pipeline after long-term work, the wear position and degree of long-term work are different, it will cause dead angles in the subsequent grinding of the inner wall of the PVC water supply pipeline during continuous work, affecting the uniformity of the subsequent grinding of the inner wall of the PVC water supply pipeline, and shortening the service life of the entire sand sleeve;

[0004] Therefore, we propose a rapid grinding device for inner wall processing of PVC water supply pipes. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid grinding device for the inner wall of a PVC water supply pipe, so as to solve the problems of low grinding efficiency of the inner wall of a PVC water supply pipe and uneven inner wall of the pipe during the overall grinding process proposed in the above background technology;

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fast grinding device for processing the inner wall of a PVC water supply pipe comprises a grinder and a telescopic table, wherein one side of the top of the grinder is fixedly connected to the telescopic table by bolts, and a placement regulating mechanism is fixedly connected to the top of the telescopic table by bolts;

[0008] The placement and regulation mechanism includes a fixed box, the top of the telescopic table is fixed with a fixed box by bolts, a motor is fixedly connected to the fixed box by bolts, a sliding sleeve is installed on one side of the fixed box, the sliding sleeve passes through one side of the fixed box and is slidably connected to the fixed box, a worm is fixedly connected to the output end of the motor, one side of the sliding sleeve is slidably connected to the worm, a sand sleeve is fixedly connected to one side of the sliding sleeve located outside the fixed box, and a limiting groove is provided on the inner and outer walls of the sliding sleeve located on the fixed box.

[0009] Furthermore, the placement and regulation mechanism also includes a turbine, a sleeve rod and a jacket. The inner wall of one side of the fixed box is movably connected to the turbine through a bearing, an eccentric wheel is fixedly sleeved on one end of the turbine, and the outer wall of the eccentric wheel is movably sleeved on a sleeve rod. The inner wall of one side of the fixed box is rotatably connected to the jacket, and one end of the sleeve rod is fixed to the outer wall of the jacket.

[0010] Furthermore, one side of the turbine is meshingly connected with the worm, and the inner protrusion of the sleeve is in contact with the upper limit groove of the sliding sleeve.

[0011] Furthermore, hydraulic sleeves are symmetrically fixed to both sides of the top of the grinder by bolts, abutment rollers are movably connected to the top bracket of the hydraulic sleeves, a material control platform is fixed to one side of the top of the grinder by bolts, a transmission box is fixed to the top inner wall of the material control platform by bolts, and transmission rollers are evenly and symmetrically movably connected to the bottom of the transmission box.

[0012] Furthermore, a fan is fixed to an outer wall of one side of the fixed box by bolts, a vacuum cleaner is installed in the material control table, and dust shields are symmetrically installed on both sides of the top of the material control table.

[0013] Furthermore, a slider is slidably connected in the top groove of the material control platform, an electric push rod is fixed to one side of the top of the material control platform by bolts, one end of the electric push rod is fixed to one side of the slider, a slide plate is slidably connected on the top track of the grinder, the top of the slide plate is movably connected to a swing arm through a bearing, and the other end of the swing arm is movably connected to the bottom of the slider.

[0014] Furthermore, a slide cylinder is slidably connected in the slide groove on the swing arm, a locking sleeve is slidably connected in the slide cylinder, a limiting bolt 1 is threadedly connected to the outer wall of the slide cylinder and located on the swing arm, and a limiting bolt 2 is evenly threadedly connected to the upper and lower sides of the swing arm.

[0015] The rapid grinding method for the inner wall of PVC water supply pipe is:

[0016] The water supply pipe and the grinding tool are fixed. The water supply pipe is inserted through the hole on one side of the material control table, and the sand sleeve is covered and directly comes to the top of the abutment roller. The hydraulic sleeve is pressurized to push the two sets of abutment rollers to rise synchronously, driving the top of the water supply pipe to contact the transmission roller at the bottom of the transmission box, and the water supply pipe is fixed on the grinding machine;

[0017] The fixed box is driven to move by the telescopic table until the bottom surface of the sand sleeve contacts the bottom inner wall of the water supply pipe. At this time, the swing arm on the slide is rotated to make the slide cylinder face the sand sleeve side. The electric push rod drives the swing arm to move toward the sand sleeve side. By rotating the limit bolt 1, the center of the slide cylinder is controlled to be flush with the center of the sand sleeve, and the clamping block on the lock sleeve is clamped with the hole at the end of the sand sleeve. The limit bolts 2 located on the upper and lower sides of the swing arm are rotated, and the support blocks at the two ends of the limit bolts are respectively abutted to complete the fixing of the swing arm.

[0018] During rotary grinding, the transmission roller on the transmission box rotates to drive the water supply pipe to rotate in the opposite direction, and the motor drives the sliding sleeve at the end of the worm to rotate forward. At the same time, the rotation of the worm also drives the turbine to rotate. The sleeve rod on the eccentric wheel at the end of the turbine moves, and the sleeve rod is pulled back and forth synchronously, driving the sand sleeve on the worm to move back and forth, so as to achieve uniform grinding of the inner wall of the water supply pipe. At the same time, the fan on the fixed box rotates, and the airflow generated will blow out the grinding powder on the inner wall of the water supply pipe, which is uniformly collected by the vacuum cleaner on the material control console.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, a highly controllable abutment roller is used to drive the water supply pipe to move, and the transmission roller at the bottom of the transmission box is used to tighten and rotate the outer wall of the water supply pipe. Then, the integral sand sleeve is connected to the inner wall of the water supply pipe under the control of the telescopic table, and the sand sleeve is rotated by the motor in the fixed box to realize the integral rotational grinding of the inner wall of the water supply pipe. Compared with the grinding method of moving a single grinding wheel or sandpaper from one end of the pipe to the other end, the grinding efficiency is higher. At the same time, the rotation of the worm is used to drive the rotation of the turbine in the fixed box, and the eccentric wheel at the turbine end moves the sleeve of the clamping sleeve back and forth, so that the sand sleeve is rotated back and forth on the inner wall of the water supply pipe to grind the inner wall of the water supply pipe more evenly.

[0021] 2. In the present invention, by installing the "bow" type swing arm on the grinder and the material control table, it does not affect the loading of the water supply pipe from the side of the material control table. At the same time, the electric push rod works to adjust the position of the slide cylinder on the swing arm, and the one side of the lock sleeve is controlled to abut against the end of the sand sleeve. Finally, the spacer bolt drives the pad to achieve the overall stability of the swing arm and the stable rotation of the end of the sand sleeve, thereby avoiding the centrifugal force generated by the rotation causing the sand sleeve to deform and affecting the uniform grinding of the inner wall of the water supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the rapid grinding equipment used for inner wall processing of PVC water supply pipes of the present invention;

[0023] Figure 2 It is a schematic front view of a rapid grinding device for inner wall processing of a PVC water supply pipe according to the present invention;

[0024] Figure 3This is a schematic diagram of the installation of the upper sand sleeve of the regulating mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the placement and regulation mechanism of the present invention from a top view;

[0026] Figure 5 This is a schematic diagram of the connection structure between the upper jacket and the sliding sleeve of the regulating mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the connection structure between the sand sleeve and the sliding sleeve of the present invention.

[0028] In the figure: 1. grinder; 2. telescopic table; 3. placement and adjustment mechanism; 301. fixed box; 302. turbine; 303. eccentric wheel; 304. sleeve rod; 305. jacket; 4. hydraulic sleeve; 5. motor; 6. worm; 7. sleeve; 8. limit groove; 9. sand sleeve; 10. material control table; 11. slider; 12. electric push rod; 13. slide plate; 14. swing arm; 15. slide cylinder; 16. locking sleeve; 17. limit bolt 1; 18. limit bolt 2; 19. transmission box; 20. abutment roller; 21. transmission roller; 22. fan; 23. vacuum cleaner; 24. dust shield. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-6 , the present invention provides a technical solution:

[0031] Example 1: The roughness of the inner wall of the PVC water supply pipe has a certain influence on the fluid transmission efficiency. The quality of the mold in the process of forming the PVC water supply pipe directly affects the uniformity of the inner wall of the PVC water supply pipe. For this reason, a grinding device is set to treat the inner wall of the PVC water supply pipe after forming. Figure 1 As shown, the grinding equipment as a whole adopts a single-side in-and-out method, and fixes the PVC water supply pipe on the abutment roller 20 and the transmission roller 21. During the rotation process, the sand sleeve 9 is used for centralized and comprehensive grinding, and the overall processing method has a higher grinding efficiency;

[0032] According to the diameter of the same batch of PVC water supply pipes, the fixing parts are debugged in advance, such as Figure 2As shown, a single PVC water supply pipe is pushed in from the material control table 10 side at the top of the grinder 1, and the telescopic table 2 before pushing in pushes the entire placement and adjustment mechanism 3 to adjust the height, so that the sand sleeve 9 located on the side of the fixed box 301 completely passes through the PVC water supply pipe;

[0033] At this time, the PVC water supply pipe is located on the abutting roller 20 at the top of the hydraulic sleeve 4, which is convenient for the subsequent rotation of the PVC water supply pipe. The pressure in the hydraulic sleeve 4 pushes the PVC water supply pipe to rise synchronously, and the two sides of the top of the PVC water supply pipe gradually contact the abutting roller 20 at the bottom of the transmission box 19. The upper and lower outer walls of the PVC water supply pipe are abutted by two sets of abutting rollers 20 and transmission rollers 21, and the transmission box 19 drives the transmission roller 21 to rotate, so as to realize the directional rotation of the PVC water supply pipe.

[0034] The inner wall of the PVC water supply pipe is grinded by rotating the sand sleeve 9. The sand sleeve 9 with one end fixed is extremely unstable. Therefore, a swing arm 14 is movably connected to the slider 11 on the top of the entire material control table 10. The other end of the swing arm 14 is movably connected to the sliding plate 13 on the top of the grinder 1. The special "bow" structure of the swing arm 14 allows the convex side to face forward and backward to leave enough space for the PVC water supply pipe to enter and exit when feeding the large-sized PVC water supply pipe. After the PVC water supply pipe is placed, the swing arm 14 can be rotated again to stabilize the other end of the sand sleeve 9.

[0035] A slide cylinder 15 is slidably connected to the swing arm 14, and the slide cylinder 15 is fixed on the swing arm 14 by rotating a limit bolt 17. Therefore, when grinding the same batch of PVC water supply pipes, the slide cylinder 15 can remain stationary after adjusting its position. A lock sleeve 16 is slidably connected inside the slide cylinder 15, and a block installed on the inner wall of the lock sleeve 16 is adapted to the card slot at the end of the sand sleeve 9. After one side of the sand sleeve 9 is pushed into the lock sleeve 16, the block automatically penetrates the card slot to complete the fixation of the end of the sand sleeve 9, thereby avoiding the problem that the end of the entire sand sleeve 9 is suspended in the air, rotates, and is easily deformed when placed for a long time. At the same time, the stability of the swing arm 14 when the sand sleeve 9 rotates is further improved. The upper and lower sides of the swing arm 14 are also threadedly connected with a limit bolt 18. After the lock sleeve 16 contacts the sand sleeve 9, the limit bolt 18 is rotated to move the pad to achieve tight contact between the two sides of the swing arm 14.

[0036] For the movement of the entire swing arm 14, the slider 11 located on the top of the material control table 10 is moved by the installed electric push rod 12, and the swing arm 14 is convenient to rotate. The power mechanism can be installed on the slider 11 at the end of the swing arm 14, further shortening the manual control steps.

[0037] Embodiment 2: After the preparation work of placing the PVC water supply pipe is completed, the inner wall surface of the PVC water supply pipe can be polished. Figure 4As shown, a motor 5 is installed in a regulating mechanism 3 placed on the top of the entire telescopic platform 2, and a worm 6 is connected to the end of the motor 5 in the fixed box 301. At the same time, a sliding sleeve 7 is slidably sleeved on one end of the worm 6. The sliding sleeve 7 is slidably connected to the fixed box 301, and the sand sleeve 9 is installed on the sliding sleeve 7. The sand sleeve 9 can be rotated at a high speed by rotating the motor 5.

[0038] However, considering that the newly installed sand sleeve 9 has uneven inner wall of the PVC water supply pipe after long-term work, the wear position and degree of long-term work are different, and the subsequent grinding of the inner wall of the PVC water supply pipe will cause dead angles in the continuous work process, shortening the service life of the entire sand sleeve 9. Figure 5 and Figure 6 The turbine 302 is installed in the entire fixed box 301, and the turbine 302 is meshed with the worm 6. When the motor 5 drives the turbine 302 to rotate, the turbine 302 will also rotate;

[0039] An eccentric wheel 303 is also fixed at the end of the turbine 302, and a sleeve rod 304 is movably connected to the eccentric wheel 303. At the same time, a jacket 305 is rotatably connected to the inner wall of the fixed box 301. The inner protrusion of the jacket 305 abuts against the limiting groove 8 provided on the sliding sleeve 7, and one side of the sleeve rod 304 is movably connected to the jacket 305. When the motor 5 drives the worm 6 to rotate, the turbine 302 rotates to realize the movably connected sleeve rod 304 on the eccentric wheel 303, and the forward and backward movement of the sleeve rod 304 pulls the entire jacket 305 to rotate, so that the sliding sleeve 7 abutted at the end of the jacket 305 slides on the surface of the worm 6, which realizes the forward and backward movement of the sliding sleeve 7 while the rotating sleeve 7;

[0040] The grinding wheel on the side of the sliding sleeve 7 rotates and moves back and forth on the inner wall side of the PVC water supply pipe, so that the sand sleeve 9 can be alternately polished at multiple points, and the problem that the sand sleeve 9 has a fixed position due to wear, which reduces the effect of subsequent polishing of the inner wall of the PVC water supply pipe. The transmission roller 21 and the abutting roller 20 drive the PVC water supply pipe to rotate, and the rotation direction of the PVC water supply pipe is opposite to the rotation direction of the worm 6 driven by the motor 5, so that the entire PVC water supply pipe can be polished evenly and efficiently.

[0041] Considering the debris generated during the grinding process, since the PVC water supply pipe rotates as a whole, the debris on the outer ends is easy to clean, while the long-term accumulation of debris on the middle side will also affect the grinding effect, so it needs to be cleaned in time. Figure 3As shown, a fan 22 is installed on the side wall of the entire fixed box 301, and the airflow generated by the rotation of the fan 22 is blown into the PVC water supply pipe, and the debris in the PVC water supply pipe is blown out from the other side, while preventing the debris from being difficult to collect. A vacuum cleaner 23 is installed in the material control table 10 to centrally collect the debris discharged from the end of the PVC water supply pipe. At the same time, the dust shield 24 symmetrically arranged at the bottom of the material control table 10 prevents the debris from spreading on the grinder 1, and the top plate of the material control table 10 can be supported.

[0042] The working principle of the present invention is as follows: the water supply pipe is inserted through the hole on one side of the material control table 10, while covering the sand sleeve 9 and directly coming to the top of the abutment roller 20, and the two groups of abutment rollers 20 are pushed up synchronously by the hydraulic sleeve 4, driving the top of the water supply pipe to contact the transmission roller 21 at the bottom of the transmission box 19, and the water supply pipe is fixed on the grinding machine 1;

[0043] The fixed box 301 is driven to move by the telescopic table 2 until the bottom surface of the sand sleeve 9 contacts the bottom inner wall of the water supply pipe. At this time, the swing arm 14 on the slide plate 13 is rotated to make the slide cylinder 15 face the sand sleeve 9 side, and the electric push rod 12 drives the swing arm 14 to move toward the sand sleeve 9 side. By rotating the limit bolt 17, the center of the slide cylinder 15 is controlled to be flush with the center of the sand sleeve 9, and the clamping block on the lock sleeve 16 is clamped with the hole at the end of the sand sleeve 9. The limit bolts 18 on the upper and lower sides of the swing arm 14 are rotated, and the end support blocks of the limit bolts 18 are respectively abutted to complete the fixing of the swing arm 14;

[0044] During rotary grinding, the transmission roller 21 on the transmission box 19 rotates to drive the water supply pipe to rotate in the opposite direction, and the motor 5 drives the sleeve 7 at the end of the worm 6 to rotate forward. At the same time, the rotation of the worm 6 also drives the turbine 302 to rotate, and the sleeve rod 304 on the eccentric wheel 303 at the end of the turbine 302 moves, synchronously pulling the sleeve rod 304 to move forward and backward and driving the sand sleeve 9 on the worm 6 to move forward and backward, so as to achieve uniform grinding of the inner wall of the water supply pipe. At the same time, the fan 22 on the fixed box 301 rotates, and the airflow generated will blow out the grinding powder on the inner wall of the water supply pipe, which is uniformly collected by the vacuum cleaner 23 on the material control table 10.

[0045] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rapid grinding device for processing the inner wall of a PVC water supply pipe, comprising a grinder (1) and a telescopic table (2), wherein one side of the top of the grinder (1) is fixedly connected to the telescopic table (2) by bolts, and characterized in that: A placement regulating mechanism (3) is fixed to the top of the telescopic platform (2) by means of bolts; The placement and regulation mechanism (3) comprises a fixed box (301), the top of the telescopic platform (2) is fixed with the fixed box (301) by bolts, a motor (5) is fixedly connected inside the fixed box (301) by bolts, a sliding sleeve (7) is installed on one side of the fixed box (301), the sliding sleeve (7) passes through one side of the fixed box (301) and is slidably connected to the fixed box (301), a worm (6) is fixedly connected to the output end of the motor (5), one side of the sliding sleeve (7) is slidably sleeved with the worm (6), a sand sleeve (9) is fixedly connected to one side of the sliding sleeve (7) located outside the fixed box (301), and a limiting groove (8) is provided on the inner and outer walls of the sliding sleeve (7) located on the fixed box (301).

2. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 1 is characterized in that: The placement and regulation mechanism (3) further comprises a turbine (302), a sleeve rod (304) and a jacket (305); the inner wall of one side of the fixed box (301) is movably connected to the turbine (302) via a bearing; an eccentric wheel (303) is sleeved and fixedly mounted on one end of the turbine (302); the outer wall of the eccentric wheel (303) is sleeved and movably connected to the sleeve rod (304); the inner wall of one side of the fixed box (301) is rotatably connected to the jacket (305); one end of the sleeve rod (304) is fixed to the outer wall of the jacket (305).

3. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 2 is characterized in that: One side of the turbine (302) is meshedly connected with the worm (6), and the inner protrusion of the sleeve (305) is in contact with the upper limit groove (8) of the sliding sleeve (7).

4. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 3 is characterized in that: Hydraulic sleeves (4) are symmetrically fixed to both sides of the top of the grinding machine (1) by bolts, and abutment rollers (20) are movably connected to the top bracket of the hydraulic sleeve (4). A material control platform (10) is fixed to one side of the top of the grinding machine (1) by bolts, and a transmission box (19) is fixed to the inner wall of the top of the material control platform (10) by bolts, and a transmission roller (21) is evenly and symmetrically movably connected to the bottom of the transmission box (19).

5. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 4 is characterized in that: A fan (22) is fixed to an outer wall of one side of the fixed box (301) by means of bolts, a dust collector (23) is installed in the material control platform (10), and dust shields (24) are symmetrically installed on both sides of the top of the material control platform (10).

6. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 5 is characterized in that: A slider (11) is slidably connected in the top groove of the material control platform (10), an electric push rod (12) is fixed to one side of the top of the material control platform (10) by bolts, one end of the electric push rod (12) is fixed to one side of the slider (11), a slide plate (13) is slidably connected to the top track of the grinding machine (1), the top of the slide plate (13) is movably connected to a swing arm (14) via a bearing, and the other end of the swing arm (14) is movably connected to the bottom of the slider (11).

7. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 6 is characterized in that: A slide cylinder (15) is slidably connected in the slide groove on the swing arm (14), a lock sleeve (16) is slidably connected in the slide cylinder (15), a limit bolt (17) is threadedly connected to the outer wall of the slide cylinder (15) and located on the swing arm (14), and a limit bolt (18) is evenly threadedly connected to the upper and lower sides of the swing arm (14).

8. The rapid grinding equipment for inner wall processing of PVC water supply pipe according to claim 7 is characterized in that: The rapid grinding method for the inner wall of PVC water supply pipe is: The water supply pipe and the grinding tool are fixed, and the water supply pipe is inserted through the hole on one side of the material control table (10), while covering the sand sleeve (9) and directly coming to the top of the abutment roller (20), and the two groups of abutment rollers (20) are pushed up synchronously by the hydraulic sleeve (4) to drive the top of the water supply pipe to contact the bottom transmission roller (21) of the transmission box (19), thereby completing the fixing of the water supply pipe on the grinding machine (1); The telescopic platform (2) is used to drive the fixed box (301) to move until the bottom surface of the sand sleeve (9) contacts the bottom inner wall of the water supply pipe. At this time, the rotary arm (14) located on the slide plate (13) is rotated to make the slide cylinder (15) face the sand sleeve (9). The electric push rod (12) drives the rotary arm (14) to move toward the sand sleeve (9). By rotating the limit bolt (17), the center of the slide cylinder (15) is controlled to be flush with the center of the sand sleeve (9), and the clamping block on the lock sleeve (16) is clamped with the hole at the end of the sand sleeve (9). The limit bolt (18) located on the upper and lower sides of the rotary arm (14) is rotated, and the end support blocks of the limit bolt (18) are respectively abutted to complete the fixing of the rotary arm (14); During the rotary grinding, the transmission roller (21) on the transmission box (19) rotates to drive the water supply pipe to rotate in the opposite direction, and the motor (5) drives the sleeve (7) at the end of the worm (6) to rotate in the forward direction. At the same time, the rotation of the worm (6) also drives the turbine (302) to rotate, and the sleeve rod (304) on the eccentric wheel (303) at the end of the turbine (302) moves, synchronously pulling the sleeve rod (304) to move forward and backward and driving the sand sleeve (9) on the worm (6) to move forward and backward, so as to achieve uniform grinding of the inner wall of the water supply pipe. At the same time, the fan (22) on the fixed box (301) rotates, and the airflow generated blows out the grinding powder on the inner wall of the water supply pipe, which is uniformly collected by the vacuum cleaner (23) on the material control console (10).

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