Polishing machine tool with splash-proof function for pipe joint machining

Abstract

The pipe joint machining polishing machine tool with the splash-proof function comprises a positioning mechanism, the positioning mechanism is arranged in the middle of the upper end of a polishing table, a polishing assembly is arranged on one side of the interior of a supporting frame arranged on the outer side of the upper end of the polishing table, and an upper protective cover is arranged on the inner side of the upper end of the supporting frame and located above the positioning mechanism; a lower protection frame is correspondingly arranged below the upper protection cover and located on the outer side of the positioning mechanism, the rear sides of dust collection heads symmetrically connected to the lower end of the rear side of the lower protection frame in a clamped mode are connected with a collection box through a dust conveying pipe, and a dust collection pump is installed on the dust conveying pipe. According to the polishing machine tool with the splash-proof function for pipe joint machining, a driving motor drives a driving gear, an outer fluted disc and a rotating disc to rotate on the inner side of a positioning frame, so that an electric hydraulic cylinder and a base which are arranged on the rotating disc rotate, and therefore during polishing, a pipe joint does not need to be disassembled and assembled; and different positions of the outer side of the pipe joint can be polished, and the use practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field related to polishing, in particular to a polishing machine tool for processing pipe joints with an anti-splash function. Background Art

[0002] With the development of society, the production and processing industry has gradually used automated production equipment to replace manual labor, thereby improving the production efficiency of enterprises and reducing labor costs. Polishing refers to a method of processing workpieces using mechanical, chemical or electrochemical effects. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece, but is aimed at obtaining a smooth surface or mirror gloss. Sometimes it is also used to eliminate gloss (matte), and polishing wheels are usually used as polishing tools. In the process of pipe joint processing, a polishing device is required to polish the pipe joint.

[0003] The existing polishing machine tools all fix the pipe joint on the processing table and polish the workpiece using the polishing wheel set above the workpiece. As a result, the workpiece position needs to be manually adjusted and re-clamped after the device polishes one side each time before the remaining surfaces can be polished, which greatly reduces the polishing efficiency. At the same time, the existing polishing machine tools will generate a large amount of dust and debris when polishing the pipe joint. If these dust and debris are not handled in time, they will not only pollute the surrounding environment, but also affect the health of the operator. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a polishing machine for processing pipe joints with a splash-proof function, so as to solve the problem that the existing polishing machines mentioned in the above background technology all fix the pipe joints on a processing table and polish the workpieces using a polishing wheel arranged above the workpieces, resulting in the need to manually adjust the position of the workpieces after each polishing of one side and re-clamp them before polishing the remaining surfaces, which greatly reduces the polishing efficiency. At the same time, the existing polishing machines will generate a large amount of dust and debris when polishing the pipe joints. If these dust and debris are not handled in time, they will not only pollute the surrounding environment, but also affect the health of the operator.

[0005] To achieve the above object, the present invention provides the following technical solution: a polishing machine tool for pipe joint processing with splash-proof function, comprising a positioning mechanism, The positioning mechanism is arranged in the middle of the upper end of the polishing table, and the positioning mechanism includes a base, an adjusting component and a fixing component. At the same time, the lower end and the upper end of the base are respectively provided with an adjusting component and a fixing component. A support frame is arranged on the outer side of the upper end of the polishing table, and a grinding component is arranged on one side inside the support frame. An upper protective cover is arranged on the inner side of the upper end of the support frame, located above the positioning mechanism, and the upper end of the upper protective cover forms a lifting structure with the support frame through a lifting mechanism. At the same time, a lower protective frame is arranged below the upper protective cover, located on the outer side of the positioning mechanism, and a dust suction head is symmetrically connected to the lower end of the rear side of the lower protective frame, and the rear side of the dust suction head is connected to the collection box through a dust conveying pipe, and a dust suction pump is installed on the dust conveying pipe.

[0006] Preferably, the adjustment component includes an electric hydraulic cylinder, the output end of the electric hydraulic cylinder is connected to the middle of the lower end of the base, and the bottom of the electric hydraulic cylinder is installed in the middle of the upper end of the rotating disk, and the middle of the lower end of the rotating disk is connected to the middle of the bottom end of the positioning frame through a bearing, and the positioning frame is installed at the lower end of the polishing table, and an outer gear disk is provided on the outside of the rotating disk, and one side of the outer gear disk is meshed with a driving gear, and the driving gear passes through one side of the positioning frame and is connected to the output end of the driving motor.

[0007] Preferably, the fixing assembly includes a fixing frame, the lower end of the fixing frame is connected to the upper end of the base, and an electric hydraulic telescopic rod is arranged inside the fixing frame in the middle of the upper end of the base, and the output end of the electric hydraulic telescopic rod passes through the fixing frame and is rotatably connected to one end of a symmetrically arranged connecting rod, the other ends of the two connecting rods are respectively rotatably connected to the middle of the correspondingly arranged movable side rods, and the outer sides of the lower ends of the two movable side rods are connected to the sides of the fixing frame through a limiting slide, and the outer sides of the upper ends of the two movable side rods are threadedly connected with grinding sleeves.

[0008] Preferably, the grinding assembly is installed in the middle of one side of the mobile frame, and the other side of the mobile frame passes through the support frame and is connected to the output end of the corresponding electric telescopic push rod. At the same time, the guide slides arranged on the front and back of the mobile frame are slidably connected to the slide grooves opened on the inner side of the support frame.

[0009] Preferably, a locking groove is provided in the middle of one side of the upper protective cover close to the polishing assembly, and a plurality of air inlet holes are provided in the middle of the upper end of the upper protective cover. At the same time, external clamping assemblies are symmetrically arranged in the middle of the front and back sides of the upper protective cover to clamp the outside of the pipe joint, thereby facilitating polishing the inner wall of the pipe joint.

[0010] Preferably, the lifting mechanism includes a lifting vertical plate, two of which are symmetrically arranged, and the outer sides of the upper ends of the two lifting vertical plates are connected to the corresponding electric linear guide rails through a connecting seat. At the same time, the bottoms of the lower ends of the two lifting vertical plates pass through the support frame and are connected to the upper end of the upper protective cover. Racks are arranged on the opposite sides of the two lifting vertical plates, and the two racks are meshed and connected with the positioning gears correspondingly arranged on the upper end of the support frame.

[0011] Preferably, the outer clamping assembly includes a clamping seat, which is an arc-shaped structure, and an electromagnetic block is arranged in the middle of the inner side of the clamping seat. At the same time, fixed suction cups are symmetrically arranged on both sides of the inside of the clamping seat, and the fixed suction cups arranged on both sides of the upper end and the lower end are connected to the vacuum pumps correspondingly arranged on the outer side of the clamping seat through connecting pipes. The middle of the outer side of the clamping seat is connected to the output end of the electric push rod, and the electric push rod passes through the upper protective cover and is connected to the mounting frame.

[0012] Preferably, a collection box is slidably connected to the back of the collection box, and a plurality of air holes are equidistantly provided at the lower end of the front side of the collection box, and the positions of the air holes are arranged corresponding to the positions of the collection box.

[0013] Compared with the prior art, the invention has the following beneficial effects: the polishing machine tool for pipe joint processing with splash-proof function is (1) In order to solve the problem that the existing polishing machine tools all fix the pipe joint on the processing table and polish the workpiece using the polishing wheel arranged above the workpiece, which results in the need to manually adjust the position of the workpiece and re-clamp it after each polishing of one side before polishing the remaining surfaces, which greatly reduces the polishing efficiency, the present application is provided with an electric hydraulic telescopic rod to drive the connecting rod to move up and down, so that the connecting rod drives the moving side rod to slide inside the corresponding limit slide, so that the two moving side rods fit with the inner side of the pipe joint, thereby installing and fixing the pipe joint, and then the driving motor drives the driving gear, the outer gear plate and the rotating plate to rotate inside the positioning frame, so that the electric hydraulic cylinder and the base arranged on the rotating plate rotate, so that when polishing, there is no need to disassemble and assemble the pipe joint, and different positions on the outer side of the pipe joint can be polished, thereby improving the practicality of use; (2) In order to solve the problem that the existing polishing machine tools have a single function during polishing and can only polish the outer wall of the pipe joint, which reduces the practicality during use, the present application clamps the outer side of the pipe joint through the outer clamping component, and then the polishing sleeve provided in the positioning mechanism contacts the inner wall of the pipe joint, and then drives the fixing component to rotate through the adjusting component, so that the polishing sleeve polishes the inner wall of the pipe joint, thereby improving the functionality and practicality of use; (3) In order to solve the problem that existing polishing machines generate a large amount of dust and debris when polishing pipe joints. If these dust and debris are not handled in time, they will not only pollute the surrounding environment, but also affect the health of the operator. The present application uses a lifting mechanism to drive the upper protective cover to move down and fit with the top of the lower protective frame, so that the polishing is in a smaller area. Then, the dust suction pump is started, so that the debris and dust generated during polishing are transported to the collection box through the dust suction head and the dust conveying pipe, thereby making the polishing more environmentally friendly and convenient for cleaning the debris and dust later. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the positioning mechanism of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the lifting mechanism and the upper protective cover of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the side cross-sectional structure of the upper protective cover of the present invention; Figure 6 It is a front view structural schematic diagram of the present invention; Figure 7 It is a rear view structural schematic diagram of the present invention.

[0015] In the figure: 1. polishing table; 2. positioning mechanism; 201. base; 202. electric hydraulic cylinder; 203. rotating disk; 204. positioning frame; 205. bearing; 206. outer gear plate; 207. driving gear; 208. driving motor; 209. fixed frame; 210. electric hydraulic telescopic rod; 211. connecting rod; 212. moving side rod; 213. limiting slide; 214. grinding sleeve; 3. supporting frame; 4. grinding assembly; 5. moving frame; 501. guide slide; 6. electric telescopic push rod; 7. lower protection frame; 8. Upper protective cover; 801, snap-fit ​​groove; 802, air inlet; 9, lifting mechanism; 901, lifting vertical plate; 902, electric linear guide; 903, rack; 904, positioning gear; 10, outer clamping assembly; 1001, clamping seat; 1002, electromagnetic block; 1003, fixed suction cup; 1004, connecting pipe; 1005, vacuum pump; 1006, electric push rod; 1007, mounting frame; 11, collection box; 1101, air vent; 1102, collection box; 12, dust suction head; 13, dust conveying pipe; 14, dust suction pump. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1-7 The present invention provides a technical solution: a polishing machine tool for pipe joint processing with a splash-proof function, according to Figure 1 , Figure 2 , Figure 6and Figure 7 As shown, the positioning mechanism 2 is arranged in the middle of the upper end of the polishing table 1, and the positioning mechanism 2 includes a base 201, an adjustment component and a fixing component, and the lower end and the upper end of the base 201 are respectively provided with an adjustment component and a fixing component.

[0018] Specifically, the adjustment component includes an electric hydraulic cylinder 202, the output end of the electric hydraulic cylinder 202 is connected to the middle of the lower end of the base 201, and the bottom of the electric hydraulic cylinder 202 is installed in the middle of the upper end of the rotating disk 203. At the same time, the middle of the lower end of the rotating disk 203 is connected to the middle of the bottom end of the positioning frame 204 through a bearing 205. The positioning frame 204 is installed at the lower end of the polishing table 1. An outer toothed disk 206 is provided on the outer side of the rotating disk 203, and a driving gear 207 is meshed and connected to one side of the outer toothed disk 206. At the same time, the driving gear 207 passes through one side of the positioning frame 204 and is connected to the output end of the driving motor 208.

[0019] When it is necessary to grind and polish different positions of the pipe joint, start the drive motor 208 to drive the drive gear 207 to rotate, so that the drive gear 207 drives the outer gear plate 206 and the rotating plate 203 to rotate synchronously, so that the electric hydraulic cylinder 202 installed on the upper end of the rotating plate 203 drives the base 201, the fixed component and the pipe joint to rotate synchronously, thereby facilitating the grinding and polishing of different positions on the outside of the pipe joint without disassembly and adjustment, thereby improving the practicality and processing efficiency.

[0020] Specifically, the fixing assembly includes a fixing frame 209, the lower end of the fixing frame 209 is connected to the upper end of the base 201, and an electric hydraulic telescopic rod 210 is arranged in the middle of the upper end of the base 201 inside the fixing frame 209, and the output end of the electric hydraulic telescopic rod 210 passes through the fixing frame 209 and is rotatably connected to one end of a symmetrically arranged connecting rod 211, and the other ends of the two connecting rods 211 are respectively rotatably connected to the middle of the correspondingly arranged movable side rods 212, and the outer sides of the lower ends of the two movable side rods 212 are connected to the sides of the fixing frame 209 through a limiting slide 213, and the outer sides of the upper ends of the two movable side rods 212 are threadedly connected to grinding sleeves 214.

[0021] When in use, the pipe joint is placed outside the upper ends of the two movable side rods 212, and then the electric hydraulic telescopic rod 210 is started to drive the connecting rod 211 to rise and fall, so that the connecting rod 211 drives the lower ends of the movable side rods 212 to move in the limiting slide 213, so that the upper ends of the movable side rods 212 are moved toward the middle or spread outward, so that the grinding sleeves 214 arranged on the outer sides of the two movable side rods 212 fit with the inner wall of the pipe joint, thereby completing the installation and fixation of the pipe joint.

[0022] according to Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, a support frame 3 is provided on the outer side of the upper end of the polishing table 1, and a grinding assembly 4 is provided on one side of the inner side of the support frame 3. The grinding assembly 4 is installed in the middle of one side of the moving frame 5, and the other side of the moving frame 5 penetrates the support frame 3 and is connected with the output end of the corresponding electric telescopic push rod 6. At the same time, the guide slides 501 provided on the front and back sides of the moving frame 5 are slidably connected with the slide grooves provided on the inner side of the support frame 3. The moving frame 5 is driven to move by the electric telescopic push rod 6, so that the guide slides 501 are slidably guided in the slide grooves provided on the inner side of the support frame 3, thereby moving the position of the grinding assembly 4, so that the grinding assembly 4 is fitted with the outer wall of the pipe joint, thereby grinding and polishing the outer wall of the pipe joint, and the inner side of the upper end of the support frame 3 is located at the positioning mechanism 2 is provided with an upper protective cover 8, and the upper end of the upper protective cover 8 forms a lifting structure with the support frame 3 through a lifting mechanism 9. The lifting mechanism 9 includes a lifting vertical plate 901. Two lifting vertical plates 901 are symmetrically provided, and the outer sides of the upper ends of the two lifting vertical plates 901 are connected to the corresponding electric linear guide rails 902 through a connecting seat. At the same time, the bottoms of the lower ends of the two lifting vertical plates 901 penetrate the support frame 3 and are connected to the upper end of the upper protective cover 8. Racks 903 are provided on opposite sides of the two lifting vertical plates 901, and the two racks 903 are meshed and connected with the positioning gears 904 correspondingly provided on the upper end of the support frame 3. The positioning gears 904 are driven to rotate by the racks 903, which effectively improves the stability of the lifting vertical plates 901 when they are lifted and lowered.

[0023] When in use, the electric linear guide 902 is started to drive the connecting seat and the lifting vertical plate 901 to move downward, so that the lifting vertical plate 901 drives the upper protective cover 8 to rise and fall. When the upper protective cover 8 is in contact with the upper end of the lower protective frame 7, the debris and dust generated during polishing can be prevented from flying everywhere during grinding and polishing, thereby improving the environmental friendliness of use.

[0024] according to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a lower protective frame 7 is correspondingly arranged below the upper protective cover 8 and on the outer side of the positioning mechanism 2. A dust head 12 is symmetrically snap-connected to the lower rear end of the lower protective frame 7, and the rear side of the dust head 12 is connected to the collecting box 11 through a dust conveying pipe 13. A dust pump 14 is installed on the dust conveying pipe 13. A collecting box 1102 is slidably connected to the back of the collecting box 11, and a plurality of air holes 1101 are equidistantly provided at the lower front end of the collecting box 11. The positions of the air holes 1101 are arranged corresponding to the positions of the collecting box 1102.

[0025] When grinding and polishing, start the vacuum pump 14 so that the generated debris and dust are transported to the collection box 11 through the vacuum head 12 and the dust pipe 13, and then the gas carried is discharged through the air vent 1101, while the debris and dust are collected in the collection box 1102 for easy later processing.

[0026] Further, a snap-in groove 801 is provided in the middle of the upper protective cover 8 near the grinding assembly 4, and a plurality of air inlet holes 802 are provided in the middle of the upper end of the upper protective cover 8, so that the gas enters the interior of the upper protective cover 8, thereby Under the action of, the gas, dust and debris in the upper protective cover 8 are synchronously sucked and processed to improve the cleaning effect. At the same time, an external clamping component 10 is symmetrically arranged in the middle of the front and back sides of the upper protective cover 8 to clamp the outside of the pipe joint, so as to facilitate the polishing of the inner wall of the pipe joint. The external clamping component 10 includes a clamping seat 1001, and the clamping seat 1001 is an arc-shaped structure. An electromagnetic block 1002 is arranged in the middle of the inner side of the clamping seat 1001. At the same time, fixed suction cups 1003 are symmetrically arranged on both sides of the clamping seat 1001. The fixed suction cups 1003 arranged on both sides of the upper and lower ends are connected to the vacuum pumps 1005 correspondingly arranged on the outer side of the clamping seat 1001 through connecting pipes 1004. The middle of the outer side of the clamping seat 1001 is connected to the output end of the electric push rod 1006, and the electric push rod 1006 passes through the upper protective cover 8 and is connected to the mounting frame 1007.

[0027] When the inner wall of the pipe joint needs to be polished, the electric push rod 1006 is started to push the clamping seat 1001 to move to the middle side, so that the clamping seat 1001 fits with the outer side of the pipe joint, and then the electromagnetic block 1002 is energized to generate magnetic force to fix the pipe joint, and at the same time, the vacuum pump 1005 is started to extract the air between the fixed suction cup 1003 and the pipe joint through the connecting pipe 1004, so that the fixed suction cup 1003 fits with the outer wall of the pipe joint to further improve the stability of the clamping, and then the electric hydraulic telescopic rod 210 is started to drive the connecting rod 211 to rise, so that the connecting rod 211 brings The lower end of the movable side rod 212 moves in the limiting slide 213, so that the upper end of the movable side rod 212 moves toward the middle, ensuring that the grinding sleeve 214 set on the outer side of the two movable side rods 212 fits with the inner wall of the pipe joint, and then the driving motor 208 is started to drive the driving gear 207 to rotate, so that the driving gear 207 drives the outer gear plate 206 and the rotating disk 203 to rotate synchronously, so that the electric hydraulic cylinder 202 installed on the upper end of the rotating disk 203 drives the base 201 and the fixed component to rotate synchronously, so that the grinding sleeve 214 grinds and polishes the inner wall of the pipe joint, thereby improving the practicality and processing efficiency.

[0028] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polishing machine tool for pipe joint processing with splash-proof function, comprising a positioning mechanism (2), characterized in that: The positioning mechanism (2) is arranged in the middle of the upper end of the polishing table (1), and the positioning mechanism (2) comprises a base (201), an adjustment component and a fixing component, and the lower end and the upper end of the base (201) are respectively provided with the adjustment component and the fixing component, and the adjustment component comprises an electric hydraulic cylinder (202), the output end of the electric hydraulic cylinder (202) is connected to the middle of the lower end of the base (201), and the bottom of the electric hydraulic cylinder (202) is installed in the middle of the upper end of the rotating disk (203), and the lower end of the rotating disk (203) is connected to the middle of the inner bottom end of the positioning frame (204) through a bearing (205), and the positioning frame (204) is installed at the lower end of the polishing table (1), and the outer side of the rotating disk (203) is provided with an outer toothed disk (206), and one side of the outer toothed disk (206) is meshingly connected with a driving gear ( 207), and the driving gear (207) passes through one side of the positioning frame (204) and is connected to the output end of the driving motor (208); a support frame (3) is arranged on the outer side of the upper end of the polishing table (1), and a grinding assembly (4) is arranged on one side of the inner side of the support frame (3); an upper protective cover (8) is arranged on the inner side of the upper end of the support frame (3) above the positioning mechanism (2), and the upper end of the upper protective cover (8) and the support frame (3) form a lifting structure through a lifting mechanism (9); and a lower protective frame (7) is arranged below the upper protective cover (8) and on the outer side of the positioning mechanism (2); a dust suction head (12) is symmetrically engaged at the lower end of the rear side of the lower protective frame (7), and the rear side of the dust suction head (12) is connected to the collection box (11) through a dust conveying pipe (13), and a dust suction pump (14) is installed on the dust conveying pipe (13).

2. The polishing machine tool for pipe joint processing with splash-proof function as claimed in claim 1, characterized in that: The fixing assembly comprises a fixing frame (209), the lower end of the fixing frame (209) is connected to the upper end of the base (201), and an electric hydraulic telescopic rod (210) is arranged in the middle of the upper end of the base (201) and inside the fixing frame (209), and the output end of the electric hydraulic telescopic rod (210) passes through the fixing frame (209) and is rotatably connected to one end of a symmetrically arranged connecting rod (211), and the other ends of the two connecting rods (211) are respectively rotatably connected to the middle of correspondingly arranged movable side rods (212), and the outer sides of the lower ends of the two movable side rods (212) are connected to the side of the fixing frame (209) through a limiting slide (213), and the outer sides of the upper ends of the two movable side rods (212) are both threadedly connected to a grinding sleeve (214).

3. The polishing machine for pipe joint processing with splash-proof function as claimed in claim 1, characterized in that: The grinding assembly (4) is installed in the middle of one side of the moving frame (5), and the other side of the moving frame (5) penetrates the supporting frame (3) and is connected to the output end of the corresponding electric telescopic push rod (6), while the guide slides (501) arranged on the front and back sides of the moving frame (5) are slidably connected to the slide grooves provided on the inner side of the supporting frame (3).

4. The polishing machine for pipe joint processing with splash-proof function as claimed in claim 1, characterized in that: A locking groove (801) is provided in the middle of one side of the upper protective cover (8) close to the polishing assembly (4), and a plurality of air inlet holes (802) are provided in the middle of the upper end of the upper protective cover (8). At the same time, external clamping assemblies (10) are symmetrically provided in the middle of the front and back sides of the upper protective cover (8) for clamping the outside of the pipe joint, thereby facilitating polishing of the inner wall of the pipe joint.

5. The polishing machine for pipe joint processing with splash-proof function as claimed in claim 1, characterized in that: The lifting mechanism (9) comprises a lifting vertical plate (901), wherein two lifting vertical plates (901) are symmetrically arranged, and the outer sides of the upper ends of the two lifting vertical plates (901) are connected to correspondingly arranged electric linear guide rails (902) through a connecting seat, and at the same time, the bottoms of the lower ends of the two lifting vertical plates (901) penetrate the support frame (3) and are connected to the upper end of the upper protective cover (8), and racks (903) are arranged on opposite sides of the two lifting vertical plates (901), and the two racks (903) are meshed and connected with positioning gears (904) correspondingly arranged on the upper end of the support frame (3).

6. The polishing machine tool for pipe joint processing with splash-proof function as claimed in claim 4, characterized in that: The outer clamping assembly (10) comprises a clamping seat (1001), the clamping seat (1001) is an arc-shaped structure, and an electromagnetic block (1002) is arranged in the middle of the inner side of the clamping seat (1001), and fixed suction cups (1003) are symmetrically arranged on both sides of the inner side of the clamping seat (1001), and the fixed suction cups (1003) arranged on both sides of the upper end and the lower end are connected to the vacuum pump (1005) correspondingly arranged on the outer side of the clamping seat (1001) through the connecting pipe (1004), and the middle of the outer side of the clamping seat (1001) is connected to the output end of the electric push rod (1006), and the electric push rod (1006) passes through the upper protective cover (8) and is connected to the mounting frame (1007).

7. The polishing machine tool for pipe joint processing with splash-proof function as claimed in claim 1, characterized in that: The back of the collection box (11) is slidably connected to a collection box (1102), and a plurality of air holes (1101) are equidistantly provided at the lower end of the front of the collection box (11), and the positions of the air holes (1101) are arranged corresponding to the position of the collection box (1102).

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