Auxiliary grinding device and method for polytetrafluoroethylene pipe connector

Abstract

The invention relates to the technical field of grinding of polytetrafluoroethylene tube connectors, in particular to an auxiliary grinding device and method for a polytetrafluoroethylene tube connector. The auxiliary grinding device for the polytetrafluoroethylene pipe connector comprises a base, a workbench is arranged at the top of the base, mounting circular plates are symmetrically arranged on the left side and the right side of the top of the workbench, and rotating assemblies for positioning a steel pipe lined with a polytetrafluoroethylene pipe are arranged on the left side walls of the mounting circular plates; and a driving assembly for driving the positioning and rotating assembly to quickly position and clamp the steel pipe lined with the polytetrafluoroethylene pipe is arranged on the mounting circular plate. According to the device, through the design of mechanical structures such as the electric push rod, the connecting rod and the annular sliding block, rapid lifting and positioning of steel pipe lining polytetrafluoroethylene pipes with different diameters can be achieved. And meanwhile, through the design of the sliding frame, the rotating roller and the elastic piece, the device can adapt to pipes with different diameters.

Description

Technical Field

[0001] The invention relates to the technical field of polytetrafluoroethylene pipe interface polishing, and in particular to a polytetrafluoroethylene pipe interface auxiliary polishing device and method. Background Art

[0002] The polytetrafluoroethylene pipe is a high-quality plunger extrusion pipe. It uses a special processing technology to make the steel pipe and the plastic pipe closely combined, and has reliable and excellent corrosion resistance. It can transport highly corrosive gases and liquids at high temperatures, which cannot be replaced by other pipes. The steel pipe lined with polytetrafluoroethylene pipe (commonly known as steel lined polytetrafluoroethylene pipe) is mainly composed of steel pipe and polytetrafluoroethylene (PTFE) lining. Usually, the polytetrafluoroethylene pipe is directly inserted into the steel pipe, and then the two ends are processed and flanging. The steel lined polytetrafluoroethylene pipe combines the mechanical strength of the steel pipe and the excellent corrosion resistance of polytetrafluoroethylene (PTFE). It can resist the erosion of almost all strong acids, strong alkalis, strong oxidants and various organic solvents. It can be used in various highly corrosive media in the chemical industry, such as the transportation of acids, alkalis, organic solvents, etc., and the transportation of drugs, intermediates and corrosive media in the production process of the pharmaceutical industry.

[0003] In order to improve the sealing performance, the interface of the steel-lined polytetrafluoroethylene pipe needs to be polished. Since the polytetrafluoroethylene pipe and the steel liner are flanging-processed to form a special shape after assembly, it is difficult to polish it completely with a normal polishing device. Therefore, an auxiliary polishing device and method for the polytetrafluoroethylene pipe interface that can be polished on multiple sides are designed. Summary of the invention

[0004] In order to overcome the disadvantage that the polytetrafluoroethylene tube and the steel liner are flanging-processed to form a special shape after being assembled, and it is difficult to completely grind it with a normal grinding device, the purpose of the present invention is to provide a polytetrafluoroethylene tube interface auxiliary grinding device and method capable of multi-sided grinding.

[0005] The technical solution is: a polytetrafluoroethylene pipe interface auxiliary grinding device, including a base, a workbench, a mounting circular plate, a positioning and rotating assembly, a driving assembly, a first mounting platform, a front grinding assembly and a side grinding assembly. A workbench is arranged on the top of the base, and mounting circular plates are symmetrically arranged on the top of the workbench. Positioning and rotating assemblies for polytetrafluoroethylene lined steel pipes are arranged on the left side walls of the mounting circular plates. The mounting circular plates are provided with a driving assembly that drives the positioning and rotating assembly to quickly position and clamp the polytetrafluoroethylene lined steel pipe. A first mounting platform is arranged on the left side of the top of the base, and a front grinding assembly capable of grinding the front interface of the polytetrafluoroethylene pipe is arranged on the top of the first mounting platform. The front grinding assembly is provided with a side grinding assembly capable of grinding the side of the polytetrafluoroethylene pipe interface.

[0006] Furthermore, the positioning rotation component includes a rotating shaft, a swing frame, an annular slider, an annular frame, a sliding sleeve, a fixed shaft, a rotating shaft, a friction wheel, a transmission component and a rotating motor. A circular hole is opened in the middle of the mounting circular plate, and a rotating shaft is rotatably arranged at an eccentric position of the left side wall of the mounting circular plate at circumferential intervals. A swing frame is arranged on the rotating shaft, and an annular slider is rotatably arranged on the left side wall of the mounting circular plate. An annular frame is installed on the annular slider, and the central axis of the annular frame coincides with the central axis of the mounting circular plate. A sliding sleeve is slidably arranged on the swing frame, and fixed shafts are circumferentially spaced on the annular frame. The fixed shaft is rotatably connected to the left side wall of the sliding sleeve adjacent to the swing frame. The rotating shaft is symmetrically rotatably arranged in the square hole in the middle of the swing frame, and a friction wheel is arranged on the rotating shaft away from the rotating shaft. A transmission component is arranged between the two rotating shafts, and a rotating motor is arranged on the swing frame, and the rotating motor is connected to one of the rotating shafts.

[0007] Furthermore, the transmission component is composed of two pulleys and a flat belt. The two rotating shafts are each provided with pulleys, and the flat belt is wound between the two pulleys.

[0008] Furthermore, the driving assembly includes a fixed seat, a first electric push rod, a connecting block, a sliding shaft and a connecting rod. The fixed seat is symmetrically arranged on the upper part of the left side wall of the mounting circular plate, and the first electric push rod is arranged between the two fixed seats. The push rod end of the first electric push rod is connected to the connecting block, and the sliding shaft is arranged on the connecting block. A connecting rod is arranged on the side wall of the annular slider, and a straight-shaped slide groove is opened on the connecting rod, and the straight-shaped slide groove on the connecting rod cooperates with the sliding shaft.

[0009] Furthermore, the front grinding assembly includes a first mounting plate, a fixed platform, a fixed plate, a limit block, a first elastic member, a bearing seat, a first grinding wheel and a dual-axis motor. The first mounting plate is arranged on the top of the first mounting plate, a fixed platform is arranged on the top of the first mounting plate, a fixed plate is arranged on the left side of the top of the first mounting plate, limit blocks are symmetrically and slidingly arranged on the front and rear side walls of the fixed platform, the first elastic member is symmetrically arranged between the limit block and the fixed plate, a group of bearing seats are symmetrically arranged in the upper and lower parts in the rectangular groove in the middle of the right side wall of the fixed platform, a first grinding wheel is arranged between each group of bearing seats, a dual-axis motor is arranged in the middle of the rectangular groove of the fixed platform, and the output shaft of the dual-axis motor is connected to the adjacent first grinding wheel.

[0010] Furthermore, the side grinding assembly includes a support column, a straight slide rail, a first slider, a second elastic member, a driving motor, a second grinding wheel, a pull rope, a mounting sleeve, a moving rod, and a third elastic member. Support columns are symmetrically arranged on the top of the first mounting plate. Straight slide rails are arranged on the support columns. The first slider is slidably arranged in the straight slide rail. A second elastic member is arranged between the first slider and the straight slide rail. A driving motor is installed on the left side wall of the first slider. The first slider is rotatably arranged with the second grinding wheel. The output shaft of the driving motor is connected to the second grinding wheel. Pull ropes are arranged on the side walls of the first slider that are close to each other. The other end of the pull rope passes through the block of the straight slide rail and is connected to the side wall. Mounting sleeves are arranged at the groove position of the limit block. The moving rod is slidably arranged in the mounting sleeve, and the third elastic member is arranged between the moving rod and the mounting sleeve.

[0011] Furthermore, it also includes an auxiliary support assembly, which is installed in the direction groove on the left side of the top of the workbench. The auxiliary support assembly includes a second mounting plate, a second electric push rod, a cross frame, a straight slide rail, a second slider, a rotating roller, a partition and a fourth elastic member. The second electric push rods are symmetrically arranged on the top of the second mounting plate, a cross frame is arranged between the tops of the push rods of the two second electric push rods, straight slide rails are arranged on the left and right sides of the cross frame, a partition is arranged in the middle of the straight slide rail, and second sliders are symmetrically arranged at the slide groove position of the straight slide rail with respect to the partition, a rotating roller is rotatably arranged between the two second sliders on the same side, the rotating rollers are symmetrically arranged front and back with respect to the partition, and a fourth elastic member is arranged between the partition and the second slider.

[0012] Furthermore, it also includes a sliding frame and a second mounting table. A square hole is opened in the middle of the right side of the workbench. The sliding frame is symmetrically slidably arranged on the right side of the base. A second mounting table for installing an auxiliary support component is arranged between the sliding frames. The second mounting table and the auxiliary support component can be stored in the square hole on the right side of the workbench.

[0013] A method for auxiliary polishing device of polytetrafluoroethylene pipe interface, the specific steps are as follows:

[0014] S1. Preparation stage: The staff will pass the polytetrafluoroethylene tube with steel pipe lining through the circular hole of the installation circular plate from the right side;

[0015] S2, lifting and positioning: start the first electric push rod to shorten it and drive the connecting block to move backward; the connecting block squeezes the connecting rod through the sliding shaft, causing the connecting rod to swing and rotate toward the front side; the connecting rod drives the annular slider to rotate clockwise, and then the sliding sleeve rotates clockwise through the annular frame and the fixed shaft; the sliding sleeve drives the swing frame to rotate around the rotating shaft, causing the three friction wheels to approach the center of the mounting circular plate, thereby lifting and positioning the steel pipe lined with polytetrafluoroethylene tube;

[0016] S3. Adjust the grinding position: the staff pulls the second mounting table to the right to make it slide out to the right through the sliding frame; starts the second electric push rod to drive the horizontal frame and the straight slide rail to move upward, so that the two rotating rollers contact the bottom of the polytetrafluoroethylene lined steel pipe; if the diameter of the polytetrafluoroethylene lined steel pipe is large, the two rotating rollers will be squeezed to move to the front and rear sides, and the fourth elastic member will be stretched;

[0017] S4, start grinding preparation: the staff continues to push the steel pipe lined with polytetrafluoroethylene tube to the left, so that its interface pushes the limit block to move to the left; the limit block moves to the left by squeezing the pull rope through the installation sleeve and the moving rod, and the pull rope drives the first sliders to move closer to each other, and the second elastic member is stretched; the two first sliders drive the driving motor and the second grinding wheel to move closer to each other;

[0018] S5, contact and start grinding: when the second grinding wheel contacts the interface position of the side wall of the polytetrafluoroethylene tube interface, the staff continues to push the polytetrafluoroethylene tube lined with the steel pipe, so that the limit block continues to move to the left; at this time, the installation sleeve continues to move to the left, but the moving rod does not move, and the third elastic member is compressed; when the first grinding wheel contacts the interface position of the front side of the polytetrafluoroethylene tube interface, the staff stops pushing the polytetrafluoroethylene tube;

[0019] S6. Rotary grinding: The staff starts the rotary motor, which drives the pulley to rotate, and drives another pulley and the rotating shaft through the flat belt transmission, thereby rotating the friction wheel and driving the polytetrafluoroethylene tube to rotate; at the same time, the dual-axis motor and the drive motor are started, and the drive motor drives the second grinding wheel to rotate in the opposite direction of the polytetrafluoroethylene tube to grind the side wall of the polytetrafluoroethylene tube; the first grinding wheel grinds the front of the polytetrafluoroethylene tube.

[0020] The beneficial effects are as follows: 1. The device can realize the rapid lifting and positioning of steel pipe lined with polytetrafluoroethylene pipes of different diameters through the design of mechanical structures such as electric push rods, connecting rods, and annular sliders. At the same time, through the design of sliding racks, rotating rollers, and elastic parts, the device can adapt to pipes of different diameters, ensuring close contact between the grinding tool (the first grinding wheel and the second grinding wheel) and the pipe interface, thereby realizing comprehensive and effective grinding of the polytetrafluoroethylene pipe interface.

[0021] 2. The device has a compact structure and is easy to operate. The staff can complete the positioning and grinding of the pipes by simple push-pull and start operations. In addition, the various components in the device work together to ensure the stability and efficiency of the grinding process, improve work efficiency, and reduce the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the installation structure of the positioning rotation assembly of the present invention.

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the positioning and rotating assembly of the present invention.

[0025] Figure 4 It is a schematic diagram of the installation structure of the drive assembly of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the front grinding assembly of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the side grinding assembly of the present invention.

[0028] Figure 7 It is a schematic diagram of a partial exploded structure of the side grinding assembly of the present invention.

[0029] Figure 8 It is a schematic diagram of the installation structure of the auxiliary support assembly of the present invention.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the auxiliary support assembly of the present invention.

[0031] Markings in the accompanying drawings: 1_base, 2_workbench, 3_mounting circular plate, 4_positioning rotation assembly, 41_rotating shaft, 42_swing frame, 43_annular slider, 44_annular frame, 45_sliding sleeve, 46_fixed shaft, 47_rotating shaft, 48_friction wheel, 49_transmission assembly, 410_rotating motor, 5_driving assembly, 51_fixed seat, 52_first electric push rod, 53_connecting block, 54_sliding shaft, 55_connecting rod, 6_first mounting table, 7_front grinding assembly, 71_first mounting plate, 72_fixed table, 73_fixed plate, 74_limiting block, 75_first elastic member, 76_bearing seat, 77_first grinding wheel, 78_dual-axis motor, 8_side grinding assembly, 81_support column, 82_straight slide rail, 83_first slider, 84_second elastic member, 85_driving motor, 86_second grinding wheel, 87_pull rope, 88_mounting sleeve, 89_moving rod, 810_third elastic member, 9_auxiliary support assembly, 91_second mounting plate, 92_second electric push rod, 93_cross frame, 94_straight slide rail, 95_second slider, 96_rotating roller, 97_partition, 98_fourth elastic member, 10_square hole, 11_sliding frame, 12_second mounting table. DETAILED DESCRIPTION

[0032] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0033] Example: Figure 1-7As shown, a polytetrafluoroethylene pipe interface auxiliary grinding device includes a base 1, a workbench 2, a mounting circular plate 3, a positioning rotation component 4, a driving component 5, a first mounting platform 6, a front grinding component 7, and a side grinding component 8. A workbench 2 is arranged on the top of the base 1, and mounting circular plates 3 are symmetrically arranged on the left and right sides of the top of the workbench 2 by welding. The left side wall of the mounting circular plate 3 is provided with a steel pipe lined with polytetrafluoroethylene tube positioning rotation component 4, and the positioning rotation component 4 includes a rotating shaft 41, a swing frame 42, an annular slider 43, an annular frame 44, a sliding sleeve 45, a fixed shaft 46, a rotating shaft 47, a friction wheel 48, a transmission component 49 and a rotating motor 410. A circular hole is opened in the middle of the mounting circular plate 3, and the left side wall of the mounting circular plate 3 is eccentrically rotated at intervals. A rotating shaft 41 is provided, and a swing frame 42 is provided on the rotating shaft 41. An annular slider 43 is rotatably provided on the left side wall of the mounting circular plate 3, and an annular frame 44 is installed on the annular slider 43. The central axis of the annular frame 44 coincides with the central axis of the mounting circular plate 3. A sliding sleeve 45 is slidably provided on the swing frame 42. Fixed shafts 46 are circumferentially spaced on the annular frame 44. The fixed shaft 46 is rotatably connected to the left side wall of the sliding sleeve 45. A rotating shaft 47 is symmetrically rotatably provided in the square hole 10 in the middle of the swing frame 42. A friction wheel 48 is provided on the rotating shaft 47 on the side away from the rotating shaft 41. A transmission component 49 is provided between the two rotating shafts 47. The transmission component 49 consists of two pulleys and a flat belt. Pulleys are provided on the two rotating shafts 47. A flat belt is wound between the pulleys, a rotating motor 410 is arranged on the swing frame 42, and the rotating motor 410 is connected to one of the rotating shafts 47. A driving assembly 5 for driving the positioning rotating assembly 4 to quickly position and clamp the polytetrafluoroethylene lined steel pipe is arranged on the mounting circular plate 3. The driving assembly 5 includes a fixed seat 51, a first electric push rod 52, a connecting block 53, a sliding shaft 54 ​​and a connecting rod 55. The upper left side wall of the mounting circular plate 3 is symmetrically arranged with a fixed seat 51, a first electric push rod 52 is arranged between the two fixed seats 51, a connecting block 53 is connected to the push rod end of the first electric push rod 52, a sliding shaft 54 ​​is arranged on the connecting block 53, a connecting rod 55 is arranged on the side wall of the annular slider 43, a straight groove is opened on the connecting rod 55, and the straight groove on the connecting rod 55 The slide groove cooperates with the slide shaft 54, and a first mounting platform 6 is arranged on the left side of the top of the base 1. A front grinding assembly 7 capable of grinding the front interface of the polytetrafluoroethylene tube is arranged on the top of the first mounting platform 6. The front grinding assembly 7 includes a first mounting plate 71, a fixed platform 72, a fixed plate 73, a limit block 74, a first elastic member 75, a bearing seat 76, a first grinding wheel 77 and a dual-axis motor 78. A first mounting plate 71 is arranged on the top of the first mounting platform 6, a fixed platform 72 is arranged on the top of the first mounting plate 71, and a fixed plate 73 is arranged on the left side of the top of the first mounting plate 71. The front and rear side walls of the fixed platform 72 are symmetrically slidably provided with limit blocks 74, and a first elastic member 75 is symmetrically arranged between the limit block 74 and the fixed plate 73. The first elastic member 75 is a compression spring.A group of bearing seats 76 are symmetrically arranged in the rectangular groove in the middle of the right side wall of the fixed platform 72 by bolt connection, and a first grinding wheel 77 is arranged between each group of bearing seats 76. A double-axis motor 78 is arranged in the middle of the rectangular groove of the fixed platform 72, and the output shaft of the double-axis motor 78 is connected to the adjacent first grinding wheel 77. A side grinding assembly 8 that can grind the side of the polytetrafluoroethylene pipe interface is arranged on the front grinding assembly 7. The side grinding assembly 8 includes a support column 81, a straight slide rail 82, a first slider 83, a second elastic member 84, a drive motor 85, a second grinding wheel 86, a pull rope 87, a mounting sleeve 88, a moving rod 89, and a third elastic member 810. Support columns 81 are symmetrically arranged on the top of the first mounting plate 71. Straight slide rails 82 are arranged on the support columns 81, and sliding A first slider 83 is provided, a second elastic member 84 is provided between the first slider 83 and the straight slide rail 82, a driving motor 85 is installed on the left side wall of the first slider 83, a second grinding wheel 86 is rotatably provided on the first slider 83, and the output shaft of the driving motor 85 is connected to the second grinding wheel 86. The side walls of the first slider 83 close to each other are provided with a pull rope 87, and the other end of the pull rope 87 passes through the block of the straight slide rail 82 and is connected to the side wall. The groove position of the limit block 74 is provided with a mounting sleeve 88, and a moving rod 89 is slidably provided in the mounting sleeve 88. A V-shaped groove is provided at the end of the moving rod 89. The moving rod 89 clamps the pull rope 87 through the V-shaped groove to prevent the pull rope 87 from slipping when the pull rope 87 is driven to move. A third elastic member 810 is provided between the moving rod 89 and the mounting sleeve 88, and the third elastic member 810 is a compression spring.

[0034] like Figure 1 , Figure 8 and Fig. 9 As shown, an auxiliary support assembly 9 is also included. The auxiliary support assembly 9 is installed in the direction groove on the left side of the top of the workbench 2. The auxiliary support assembly 9 includes a second mounting plate 91, a second electric push rod 92, a cross frame 93, a straight slide rail 94, a second slider 95, a rotating roller 96, a partition 97 and a fourth elastic member 98. Bolt holes are provided on the second mounting plate 91. The second mounting plate 91 is fixed in the direction groove on the left side of the top of the workbench 2 by bolts. The second electric push rods 92 are symmetrically arranged on the top of the second mounting plate 91. The two second electric push rods 92 are symmetrically arranged on the top of the second mounting plate 91. A cross frame 93 is provided between the tops of the push rods of the two electric push rods 92, and straight slide rails 94 are provided on both sides of the cross frame 93 by bolt connection, a partition plate 97 is provided in the middle of the straight slide rail 94, and a second slider 95 is symmetrically provided at the slide groove position of the straight slide rail 94 with respect to the partition plate 97, a rotating roller 96 is rotatably provided between the two second sliders 95 on the same side, and the rotating roller 96 is symmetrically provided front and back with respect to the partition plate 97, and a fourth elastic member 98 is provided between the partition plate 97 and the second slider 95, and the fourth elastic member 98 is a tension spring.

[0035] like Figure 1 , Figure 8 and Fig. 9 As shown, it also includes a sliding frame 11 and a second mounting platform 12. A square hole 10 is opened in the middle of the right side of the workbench 2, and a sliding groove is symmetrically opened in the front and back of the lower right side of the base 1. The sliding frame 11 is slidably arranged in the sliding groove of the base 1, and the second mounting platform 12 for installing the auxiliary support assembly 9 is arranged between the sliding frames 11 by bolt connection. The second mounting platform 12 and the auxiliary support assembly 9 can be received in the square hole 10 on the right side of the workbench 2.

[0036] When auxiliary polishing of the polytetrafluoroethylene tube interface is required, the staff will lift the polytetrafluoroethylene tube with steel tube lining from the right side through the circular hole of the mounting circular plate 3, and the staff will start the first electric push rod 52. The first electric push rod 52 shortens and drives the connecting block 53 to move backward. The connecting block 53 squeezes the connecting rod 55 through the sliding shaft 54 ​​to swing forward, and then the connecting rod 55 drives the annular slider 43 to rotate clockwise, and then the annular frame 44 drives the sliding sleeve 45 to rotate clockwise through the fixed shaft 46, and the sliding sleeve 45 drives the swinging frame 42 to rotate around the rotating shaft 41, and then the three friction wheels 48 approach the center of the mounting circular plate 3, and then the polytetrafluoroethylene tube lined with the steel tube is lifted and positioned. Then the staff pulls the second mounting platform 12 to the right, and the second mounting platform 12 slides to the right through the sliding frame 11, and then starts the second electric push rod 92, which drives the cross frame 93 and the straight slide rail 94 to move upward, and then the two rotating rollers 96 contact the bottom of the steel pipe lined with polytetrafluoroethylene tube. When the diameter of the steel pipe lined with polytetrafluoroethylene tube is large, the two rotating rollers 96 will be squeezed to move to the front and rear sides, and the fourth elastic member 98 is stretched. The staff continues to push the steel pipe lined with polytetrafluoroethylene tube to the left, and the steel pipe lined with polytetrafluoroethylene tube interface pushes the limit block 74 to move to the left, the first elastic member 75 is compressed, and the limit block 74 squeezes the pull rope 87 to move to the left through the mounting sleeve 88 and the moving rod 89, and the pull rope 87 drives the first slider 83 to approach each other, and the second elastic member 84 is stretched. Then, the two first sliders 83 drive the driving motor 85 and the second grinding wheel 86 to move closer to each other. When the second grinding wheel 86 contacts the interface position of the side wall of the polytetrafluoroethylene tube interface, the polytetrafluoroethylene tube interface of the steel pipe liner pushes the limit block 74 to continue to move to the left. At this time, the mounting sleeve 88 continues to move to the left, and the moving rod 89 does not move. Then, the third elastic member 810 is compressed. When the first grinding wheel 77 contacts the front interface position of the polytetrafluoroethylene tube interface, the polytetrafluoroethylene tube is stopped from being pushed. At this time, the rotating motor 410 is started, and the rotating motor 410 The pulley is driven to rotate, and then the other pulley and the rotating shaft 47 are driven to rotate through the flat belt transmission, and then the friction wheel 48 rotates to drive the polytetrafluoroethylene tube to rotate, and at the same time, the dual-axis motor 78 and the driving motor 85 are started to work, and the driving motor 85 drives the second grinding wheel 86 to rotate in the opposite direction of the polytetrafluoroethylene tube, so as to better grind the side wall of the polytetrafluoroethylene tube, and the first grinding wheel 77 grinds the front of the polytetrafluoroethylene tube. The device has a simple structure and is easy to operate, and can quickly and effectively perform comprehensive grinding operations on the interface position of the polytetrafluoroethylene tube.

[0037] Embodiment 2: A method for auxiliary polishing device of polytetrafluoroethylene pipe interface, the specific steps are as follows:

[0038] S1, preparation stage: the staff passes the polytetrafluoroethylene tube with steel pipe lining through the circular hole of the installation circular plate 3 from the right side;

[0039] S2, lifting and positioning: start the first electric push rod 52, shorten it and drive the connecting block 53 to move backward; the connecting block 53 squeezes the connecting rod 55 through the sliding shaft 54, so that the connecting rod 55 swings and rotates toward the front side; the connecting rod 55 drives the annular slider 43 to rotate clockwise, and then the sliding sleeve 45 rotates clockwise through the annular frame 44 and the fixed shaft 46; the sliding sleeve 45 drives the swing frame 42 to rotate around the rotating shaft 41, so that the three friction wheels 48 are close to the center of the installation circular plate 3, thereby lifting and positioning the polytetrafluoroethylene lined steel pipe;

[0040] S3, adjust the grinding position: the staff pulls the second mounting platform 12 to the right, so that it slides out to the right through the sliding frame 11; starts the second electric push rod 92, drives the horizontal frame 93 and the straight slide rail 94 to move upward, so that the two rotating rollers 96 contact the bottom of the steel pipe lined with polytetrafluoroethylene tube; if the diameter of the steel pipe lined with polytetrafluoroethylene tube is large, the two rotating rollers 96 will be squeezed to move to the front and rear sides, and the fourth elastic member 98 will be stretched;

[0041] S4, start grinding preparation: the staff continues to push the steel pipe lined with polytetrafluoroethylene tube to the left, so that its interface pushes the limit block 74 to move to the left; the limit block 74 squeezes the pull rope 87 to move to the left through the installation sleeve 88 and the moving rod 89, and the pull rope 87 drives the first slider 83 to move closer to each other, and the second elastic member 84 is stretched; the two first sliders 83 drive the driving motor 85 and the second grinding wheel 86 to move closer to each other;

[0042] S5, contact and start grinding: when the second grinding wheel 86 contacts the interface position of the side wall of the polytetrafluoroethylene tube interface, the staff continues to push the polytetrafluoroethylene tube lined with the steel pipe, so that the limit block 74 continues to move to the left; at this time, the installation sleeve 88 continues to move to the left, but the moving rod 89 does not move, and the third elastic member 810 is compressed; when the first grinding wheel 77 contacts the interface position of the front side of the polytetrafluoroethylene tube interface, the staff stops pushing the polytetrafluoroethylene tube;

[0043] S6, rotary grinding: the staff starts the rotary motor 410, which drives the pulley to rotate, and drives another pulley and the rotating shaft 47 to rotate through the flat belt transmission, thereby rotating the friction wheel 48 and driving the polytetrafluoroethylene tube to rotate; at the same time, the dual-axis motor 78 and the drive motor 85 are started, and the drive motor 85 drives the second grinding wheel 86 to rotate in the opposite direction to the polytetrafluoroethylene tube to grind the side wall of the polytetrafluoroethylene tube; the first grinding wheel 77 grinds the front of the polytetrafluoroethylene tube.

[0044] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A polytetrafluoroethylene pipe interface auxiliary grinding device, characterized in that: The invention comprises a base (1), a workbench (2) is arranged on the top of the base (1), a mounting circular plate (3) is symmetrically arranged on the top of the workbench (2), a positioning rotating assembly (4) for a steel pipe lined with polytetrafluoroethylene tube is arranged on the left side wall of the mounting circular plate (3), a driving assembly (5) for driving the positioning rotating assembly (4) to quickly position and clamp the steel pipe lined with polytetrafluoroethylene tube is arranged on the mounting circular plate (3), a first mounting platform (6) is arranged on the left side of the top of the base (1), a front grinding assembly (7) capable of grinding the front interface of the polytetrafluoroethylene tube is arranged on the top of the first mounting platform (6), and a side grinding assembly (8) capable of grinding the side of the polytetrafluoroethylene tube interface is arranged on the front grinding assembly (7).

2. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 1, characterized in that: The positioning rotation assembly (4) comprises a rotating shaft (41), a circular hole is opened in the middle of the mounting circular plate (3), the rotating shaft (41) is rotatably arranged at intervals in the circumferential direction on the left side wall of the mounting circular plate (3) at an eccentric position on the left side wall, a swing frame (42) is arranged on each of the rotating shafts (41), an annular slider (43) is rotatably arranged on the left side wall of the mounting circular plate (3), an annular frame (44) is mounted on the annular slider (43), the central axis of the annular frame (44) coincides with the central axis of the mounting circular plate (3), and a sliding sleeve (45) is slidably arranged on the swing frame (42) , fixed shafts (46) are arranged at intervals in the circumferential direction on the annular frame (44), and the fixed shafts (46) are rotatably connected to the left side wall of the adjacent sliding sleeve (45); a rotating shaft (47) is symmetrically rotatably arranged in a square hole in the middle of the swing frame (42); a friction wheel (48) is arranged on the rotating shaft (47) on the side away from the rotating shaft (41); a transmission component (49) is arranged between the two rotating shafts (47); a rotating motor (410) is arranged on the swing frame (42), and the rotating motor (410) is connected to one of the rotating shafts (47).

3. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 2, characterized in that: The transmission component (49) is composed of two pulleys and a flat belt. The two rotating shafts (47) are each provided with a pulley, and a flat belt is wound between the two pulleys.

4. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 3, characterized in that: The driving assembly (5) comprises a fixing seat (51), the fixing seat (51) is symmetrically arranged on the upper part of the left side wall of the mounting circular plate (3), a first electric push rod (52) is arranged between the two fixing seats (51), a push rod end of the first electric push rod (52) is connected to a connecting block (53), a sliding shaft (54) is arranged on the connecting block (53), a connecting rod (55) is arranged on the side wall of the annular slider (43), a straight-shaped sliding groove is opened on the connecting rod (55), and the straight-shaped sliding groove on the connecting rod (55) cooperates with the sliding shaft (54).

5. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 4, characterized in that: The front grinding assembly (7) comprises a first mounting plate (71), the first mounting platform (6) is provided with the first mounting plate (71) on the top, a fixed platform (72) is provided on the top of the first mounting plate (71), a fixed plate (73) is provided on the left side of the top of the first mounting plate (71), the front and rear side walls of the fixed platform (72) are symmetrically and slidably provided with limit blocks (74), a first elastic member (75) is symmetrically provided between the limit blocks (74) and the fixed plate (73), a group of bearing seats (76) are symmetrically provided in the upper and lower parts in the rectangular groove in the middle of the right side wall of the fixed platform (72), a first grinding wheel (77) is provided between each group of the bearing seats (76), a double-axis motor (78) is provided in the middle of the rectangular groove of the fixed platform (72), and the output shaft of the double-axis motor (78) is connected to the adjacent first grinding wheel (77).

6. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 5, characterized in that: The side grinding assembly (8) includes a support column (81), the support column (81) is symmetrically arranged on the top of the first mounting plate (71), a straight slide rail (82) is arranged on the support column (81), a first slider (83) is slidably arranged in the straight slide rail (82), a second elastic member (84) is arranged between the first slider (83) and the straight slide rail (82), a driving motor (85) is installed on the left side wall of the first slider (83), and the first slider (83) is rotatably arranged with a second grinding wheel (84). The output shaft of the driving motor (85) is connected to the second grinding wheel (86), the side walls of the first sliding block (83) close to each other are provided with a pull rope (87), the other end of the pull rope (87) passes through the block of the straight slide rail (82) and is connected to the side wall, the groove position of the limit block (74) is provided with a mounting sleeve (88), a moving rod (89) is slidably arranged in the mounting sleeve (88), and a third elastic member (810) is arranged between the moving rod (89) and the mounting sleeve (88).

7. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 6, characterized in that: The invention also comprises an auxiliary support assembly (9), which is installed in a direction groove on the left side of the top of the workbench (2). The auxiliary support assembly (9) comprises a second mounting plate (91), a second electric push rod (92) is symmetrically arranged on the top of the second mounting plate (91), a cross frame (93) is arranged between the tops of the two second electric push rods (92), a straight slide rail (94) is arranged on both sides of the cross frame (93), a partition plate (97) is arranged in the middle of the straight slide rail (94), a second slider (95) is symmetrically arranged at the slide groove position of the straight slide rail (94) with respect to the partition plate (97), a rotating roller (96) is rotatably arranged between the two second sliders (95) on the same side, and the rotating roller (96) is symmetrically arranged front and rear with respect to the partition plate (97), and a fourth elastic member (98) is arranged between the partition plate (97) and the second slider (95).

8. A polytetrafluoroethylene pipe interface auxiliary grinding device as claimed in claim 7, characterized in that: The invention also comprises a sliding frame (11), a square hole (10) is opened in the middle of the right side of the workbench (2), the sliding frame (11) is symmetrically slidably arranged on the right side of the base (1), a second mounting platform (12) for mounting the auxiliary support assembly (9) is arranged between the sliding frames (11), and the second mounting platform (12) and the auxiliary support assembly (9) can be received in the square hole (10) on the right side of the workbench (2).

9. A method for auxiliary polishing device for polytetrafluoroethylene pipe joints as claimed in claim 8, characterized in that: The specific steps include: S1, preparation stage: the staff passes the polytetrafluoroethylene tube with steel pipe lining through the circular hole of the mounting circular plate (3) from the right side; S2, lifting and positioning: start the first electric push rod (52), shorten it and drive the connecting block (53) to move backward; the connecting block (53) squeezes the connecting rod (55) through the sliding shaft (54), so that the connecting rod (55) swings and rotates toward the front side; the connecting rod (55) drives the annular slider (43) to rotate clockwise, and then the sliding sleeve (45) rotates clockwise through the annular frame (44) and the fixed shaft (46); the sliding sleeve (45) drives the swing frame (42) to rotate around the rotating shaft (41), so that the three friction wheels (48) are close to the center of the installation circular plate (3), thereby lifting and positioning the steel pipe lined with polytetrafluoroethylene tube; S3, adjusting the grinding position: the staff pulls the second mounting platform (12) to the right, so that it slides out to the right through the sliding frame (11); the second electric push rod (92) is started to drive the horizontal frame (93) and the straight slide rail (94) to move upward, so that the two rotating rollers (96) contact the bottom of the polytetrafluoroethylene lined steel pipe; if the diameter of the polytetrafluoroethylene lined steel pipe is large, the two rotating rollers (96) will be squeezed to move to the front and rear sides, and the fourth elastic member (98) will be stretched; S4, start grinding preparation: the staff continues to push the steel pipe lined with polytetrafluoroethylene tube to the left, so that its interface pushes the limit block (74) to move to the left; the limit block (74) squeezes the pull rope (87) to move to the left through the installation sleeve (88) and the moving rod (89), and the pull rope (87) drives the first sliders (83) to move closer to each other, and the second elastic member (84) is stretched; the two first sliders (83) drive the driving motor (85) and the second grinding wheel (86) to move closer to each other; S5, contact and start grinding: when the second grinding wheel (86) contacts the interface position of the side wall of the polytetrafluoroethylene tube interface, the staff continues to push the polytetrafluoroethylene tube lined with the steel pipe, so that the limit block (74) continues to move to the left; at this time, the installation sleeve (88) continues to move to the left, but the moving rod (89) does not move, and the third elastic member (810) is compressed; when the first grinding wheel (77) contacts the interface position of the front side of the polytetrafluoroethylene tube interface, the staff stops pushing the polytetrafluoroethylene tube; S6, rotary grinding: the staff starts the rotary motor (410), the rotary motor (410) drives the pulley to rotate, and drives another pulley and the rotating shaft (47) to rotate through the flat belt transmission, thereby rotating the friction wheel (48) and driving the polytetrafluoroethylene tube to rotate; at the same time, the double-shaft motor (78) and the drive motor (85) are started, and the drive motor (85) drives the second grinding wheel (86) to rotate in the opposite direction to the polytetrafluoroethylene tube to grind the side wall of the polytetrafluoroethylene tube; the first grinding wheel (77) grinds the front of the polytetrafluoroethylene tube.

Images