Automobile exhaust pipe burr cutting device

Abstract

The utility model discloses an automobile exhaust pipe burr cutting device which comprises a scraper mechanism, the scraper mechanism comprises an installation block, two inner scrapers and two outer scrapers are connected to the installation block in a sliding mode, and a first elastic piece is arranged between the two inner scrapers so that the two inner scrapers can abut against the corresponding outer scrapers in a pressing mode. A second elastic piece is arranged between the two outer scrapers so as to pull the two outer scrapers to the corresponding inner scrapers; an output shaft of the first motor is fixedly connected with one side face of the mounting block, and the output shaft of the first motor is located between the two inner scrapers; under the action of the first elastic piece and the second elastic piece, the positions of the inner scraper and the outer scraper can be dynamically adjusted, so that the inner scraper and the outer scraper can be tightly attached to the pipe wall of the exhaust pipe all the time, the exhaust pipe is cleaned more thoroughly, and the inner scraper and the outer scraper can be prevented from damaging the exhaust pipe.

Description

TECHNICAL FIELD

[0001] The utility model belongs to exhaust pipe technical field, concretely is a kind of automobile exhaust pipe deburring device. BACKGROUND

[0002] Automobile exhaust bellows is also called automobile exhaust pipe hose, it is installed in the exhaust pipe between engine exhaust branch pipe and muffler, make the whole exhaust system to be flexible connection, to reduce vibration and noise, facilitate installation and prolong the life of exhaust muffling system, it is mainly used in light car, microcar and passenger car, its structure is double-layered bellows outer cover wire mesh cover, two ends straight edge section outer cover snap ring structure, to make the sound-absorbing effect better, bellows inside can be equipped with expansion joint or mesh cover, main material is stainless steel SUS304, sleeve and pipe material can be stainless steel or plated aluminum steel.

[0003] In related documents, a kind of automobile exhaust pipe deburring device is disclosed, including workbench, the workbench top one end is equipped with burr cleaning mechanism, another end is equipped with the fixed mechanism matched with the burr cleaning mechanism;The burr cleaning mechanism includes motor mounting seat, cleaning motor and scraper assembly, the motor mounting seat is installed at the workbench top end away from the fixed mechanism, the cleaning motor is installed on the motor mounting seat, the output shaft end of the cleaning motor is equipped with the scraper assembly.

[0004] The scraper of this exhaust pipe deburring device is fixed by screw rod, the coaxiality of exhaust pipe and cleaning motor is required higher, and the problems of not clean or scraper damaging exhaust pipe are prone to occur. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of automobile exhaust pipe deburring device to solve at least one of the above technical problems.

[0006] To achieve the above object, the technical scheme adopted by the utility model is:

[0007] A kind of automobile exhaust pipe deburring device, comprising:

[0008] Scraper mechanism, it includes an installation block, the installation block is slidably connected with two inner scrapers and two outer scrapers along its length direction, two the inner scrapers are located between two the outer scrapers, first elastic member is arranged between two the inner scrapers to press two the inner scrapers to its corresponding the outer scraper, second elastic member is arranged between two the outer scrapers to pull two the outer scrapers to its corresponding the inner scraper;The burr of exhaust pipe spout is cut off by the scraper mechanism arranged for cutting, the installation block is arranged for installing inner scraper and outer scraper, inner scraper and outer scraper cooperate, and the burr of exhaust pipe spout is cut off from inside and outside, two inner scrapers and two outer scrapers can improve burr cleaning speed;

[0009] A first motor, the output shaft of the first motor is fixedly connected with one side of the mounting block, the output shaft of the first motor is located between the two inner scrapers, the length directions of the output shaft of the first motor, the two inner scrapers and the two outer scrapers are consistent, the first motor is arranged to drive the mounting block to rotate, so as to drive the inner scraper and the outer scraper to rotate around the pipe opening of the exhaust pipe, and the burrs on the pipe opening of the exhaust pipe are cleaned.

[0010] The first elastic member is arranged, so that the inner scraper is pressed to the corresponding outer scraper; the second elastic member is arranged, so that the outer scraper is pulled to the corresponding inner scraper; when the burrs on the pipe opening of the exhaust pipe are cleaned, the mechanism is inserted into the pipe opening of the exhaust pipe, the inner scraper is extended into the pipe opening of the exhaust pipe, and the outer scraper is located outside the exhaust pipe; under the action of the first elastic member and the second elastic member, the inner scraper and the outer scraper are close to the pipe wall of the exhaust pipe, the pipe wall of the exhaust pipe is clamped, the first motor drives the mounting block to rotate, and the inner scraper and the outer scraper can rotate along the pipe wall of the exhaust pipe, so that the burrs are cleaned; when the coaxiality of the first motor and the exhaust pipe is not very high, under the action of the first elastic member and the second elastic member, the positions of the inner scraper and the outer scraper can be dynamically adjusted, so that the inner scraper and the outer scraper can always be close to the pipe wall of the exhaust pipe, the exhaust pipe is cleaned more cleanly, and the inner scraper and the outer scraper can also avoid damaging the exhaust pipe.

[0011] Further, first sliding holes and second sliding holes are formed in the end face of the mounting block along the length direction of the mounting block;

[0012] Two first sliding blocks are slidably connected in the first sliding holes, the two inner scrapers are fixedly connected with the two first sliding blocks, the first elastic member is located in the first sliding holes and between the two first sliding blocks; the first sliding holes and the first sliding blocks are arranged to realize the sliding connection between the mounting block and the inner scrapers; the first sliding holes are also arranged to mount the first elastic member;

[0013] Two second sliding blocks are slidably connected in the second sliding holes, the two outer scrapers are fixedly connected with the two second sliding blocks, the second elastic member is located in the second sliding holes and between the two second sliding blocks; the second sliding holes and the second sliding blocks are arranged to realize the sliding connection between the mounting block and the outer scrapers; the second sliding holes are also arranged to mount the second elastic member;

[0014] The mounting block has a limiting groove along its length on the side opposite to the first motor. The limiting groove is connected to both the first and second sliding holes. Both inner and outer scrapers extend through the limiting groove to the outside of the mounting block. The limiting groove restricts the movement of the inner and outer scrapers, which can only move along the length of the limiting groove. After passing through the limiting groove, the inner and outer scrapers can also restrict the rotation of the first and second sliders, so that the first slider can only slide along the length of the first sliding hole and the second slider can only slide along the length of the second sliding hole.

[0015] Specifically, the first elastic element includes a first fixing part and two compression springs. The first fixing part is fixed to the middle of the first sliding hole, and the two compression springs are respectively disposed on both sides of the first fixing part. One end of the compression spring is fixed to the first fixing part, and the other end is fixed to the corresponding inner scraper. The first fixing part is used to fix one end of the compression spring to the mounting block, and the compression spring is used to press the inner scraper against its corresponding outer scraper. Since the first fixing part is fixed to the first sliding hole, the two compression springs do not interfere with each other.

[0016] Specifically, the second elastic element includes a second fixing part and two tension springs. The second fixing part is fixed in the middle of the second sliding hole, and the two tension springs are respectively disposed on both sides of the second fixing part. One end of each tension spring is fixed to the second fixing part, and the other end is fixed to its corresponding outer scraper. The second fixing part is used to fix one end of the tension spring to the mounting block, and the tension spring is used to pull the outer scraper to its corresponding inner scraper. Since the second fixing part is fixed to the second sliding hole, the two tension springs do not interfere with each other.

[0017] Furthermore, a mounting post is coaxially fixed on the motor shaft of the first motor, the mounting post is located between the first motor and the mounting block, and a sliding sleeve is slidably connected to the mounting post;

[0018] The mounting block has a first guide ring in the middle of the side facing away from the first motor. Both inner scrapers are connected to a first pull rope, which passes through the first guide ring and is connected to the sliding sleeve.

[0019] The two ends of the side away from the first motor of the mounting block are respectively provided with a second guide ring, and the outer scraper is connected with a second pull rope, and the second pull rope passes through the corresponding second guide ring and is connected with the sliding sleeve; the mounting column is arranged for mounting the sliding sleeve, the sliding sleeve is arranged for driving the first pull rope and the second pull rope to move, the first pull rope and the second pull rope are arranged for pulling the inner scraper and the outer scraper to move, and the first guide ring and the second guide ring are arranged for guiding the direction of the first pull rope and the second pull rope, so that the direction of the movement of the inner scraper and the outer scraper driven by the first pull rope and the second pull rope is guided; when the sliding sleeve slides towards the first motor, the first pull rope and the second pull rope can drive the inner scraper and the outer scraper to move away from each other, so that the pipe wall of the exhaust pipe can be placed between the inner scraper and the outer scraper.

[0020] Further, the sliding sleeve is coaxially fixed with a pull ring, the outer diameter of the pull ring is greater than the outer diameter of the sliding sleeve, and the pull ring is arranged to facilitate the sliding of the sliding sleeve towards the first motor.

[0021] Further, the mounting column is provided with a guide groove along the axial direction of the mounting column, and the inner wall of the sliding sleeve is provided with a guide strip matched with the guide groove; the guide strip is arranged in the guide groove and can slide along the length direction of the guide groove; the guide strip and the guide groove are matched with each other to prevent the sliding of the sliding sleeve.

[0022] Further, the first motor is coaxially provided with a second motor at one end away from the mounting block, a nut is slidably connected to the outer shell of the second motor along the axial direction of the second motor, the output shaft of the second motor is threadedly connected with the nut to drive the nut to move along the axial direction of the second motor, a pull rod is fixed to the nut, and a hook portion is arranged at one end of the pull rod away from the nut, the hook portion extends between the pull ring and the mounting block, the second motor and the nut are matched, the output shaft of the second motor is rotated to drive the nut to move along the axial direction of the second motor, the nut drives the hook portion of the pull rod to move, so that the hook portion can hook the pull ring and drive the pull ring to move close to the first motor, thereby realizing the movement of the inner scraper and the outer scraper away from each other.

[0023] Further, the first motor and the second motor are fixed in the housing, the output shaft of the first motor passes through the housing and is connected with the mounting column, one end of the pull rod passes through the housing and is connected with the nut, and the housing is arranged for mounting the first motor and the second motor, and the pull rod is matched with the housing to realize the sliding connection relationship between the nut and the outer shell of the second motor.

[0024] Further, an accommodating groove is formed in the outer wall of the shell along the length direction of the pull rod, and the pull rod is located in the accommodating groove.

[0025] Compared with the prior art, the utility model has the advantages of:

[0026] The first elastic member and the second elastic member are arranged, the inner scraper is pressed to the corresponding outer scraper, the outer scraper is pulled to the corresponding inner scraper, the inner scraper is inserted into the pipe opening of the exhaust pipe, the outer scraper is outside the exhaust pipe, the inner scraper and the outer scraper are close to the pipe wall of the exhaust pipe under the action of the first elastic member and the second elastic member, the exhaust pipe is clamped, the first motor drives the mounting block to rotate, and the inner scraper and the outer scraper can rotate along the pipe wall of the exhaust pipe, so that the burrs are cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a sectional view of the burr cutting device for the exhaust pipe of the automobile in the embodiment;

[0028] In the figure: 1, scraper mechanism; 101, mounting block; 1011, first sliding hole; 1012, second sliding hole; 1013, limiting groove; 102, inner scraper; 103, outer scraper; 104, first sliding block; 105, second sliding block; 106, first fixed part; 107, compression spring; 108, second fixed part; 109, tension spring; 2, first motor; 3, mounting column; 4, sliding sleeve; 5, first guide ring; 6, first pull rope; 7, second guide ring; 8, second pull rope; 9, pull ring; 10, guide groove; 11, guide strip; 12, second motor; 13, nut; 14, pull rod; 15, hook part; 16, shell; 17, accommodating groove. DETAILED DESCRIPTION

[0029] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] AsFigure 1 The automobile exhaust pipe burr cutting device provided by the embodiment shown comprises:

[0031] The scraper mechanism 1 comprises a mounting block 101, two inner scrapers 102 and two outer scrapers 103 are slidably connected to the mounting block 101 along the length direction of the mounting block 101, the two inner scrapers 102 are located between the two outer scrapers 103, a first elastic member is arranged between the two inner scrapers 102 to press the two inner scrapers 102 against the corresponding outer scraper 103, and a second elastic member is arranged between the two outer scrapers 103 to pull the two outer scrapers 103 towards the corresponding inner scraper 102; the scraper mechanism 1 is arranged to cut the burrs of the exhaust pipe opening, the mounting block 101 is arranged to mount the inner scraper 102 and the outer scraper 103, the inner scraper 102 cooperates with the outer scraper 103 to cut the burrs of the exhaust pipe opening from the inner and outer sides, and two inner scrapers 102 and two outer scrapers 103 are arranged to improve the burr cleaning speed;

[0032] The first motor 2 is fixedly connected to one side surface of the mounting block 101, the output shaft of the first motor 2 is located between the two inner scrapers 102, the length directions of the output shaft of the first motor 2, the two inner scrapers 102 and the two outer scrapers 103 are consistent, and the first motor 2 is arranged to drive the mounting block 101 to rotate, so as to drive the inner scraper 102 and the outer scraper 103 to rotate around the opening of the exhaust pipe, and realize the cleaning of the burrs of the exhaust pipe opening.

[0033] The first elastic member is arranged to press the inner scraper 102 against the corresponding outer scraper 103, the second elastic member is arranged to pull the outer scraper 103 towards the corresponding inner scraper 102, the mechanism is inserted into the opening of the exhaust pipe when the burrs of the opening of the exhaust pipe are cleaned, the inner scraper 102 is extended into the opening of the exhaust pipe, the outer scraper 103 is located outside the exhaust pipe, under the action of the first elastic member and the second elastic member, the inner scraper 102 and the outer scraper 103 are close to the pipe wall of the exhaust pipe, the pipe wall of the exhaust pipe is clamped, the first motor 2 drives the mounting block 101 to rotate, which can drive the inner scraper 102 and the outer scraper 103 to rotate along the pipe wall of the exhaust pipe, so as to realize the cleaning of the burrs, when the coaxiality of the first motor 2 and the exhaust pipe is not very high, under the action of the first elastic member and the second elastic member, the positions of the inner scraper 102 and the outer scraper 103 can be dynamically adjusted, so that the inner scraper 102 and the outer scraper 103 can always closely adhere to the pipe wall of the exhaust pipe, the exhaust pipe can be cleaned more cleanly, and the inner scraper 102 and the outer scraper 103 can also avoid damaging the exhaust pipe.

[0034] Further, first sliding holes 1011 and second sliding holes 1012 are formed in the end surface of the mounting block 101 along the length direction of the mounting block 101;

[0035] Two first sliding blocks 104 are slidably connected in the first sliding hole 1011, two inner scrapers 102 are fixedly connected with the two first sliding blocks 104 respectively, the first elastic member is located in the first sliding hole 1011 and between the two first sliding blocks 104; the first sliding hole 1011 cooperates with the first sliding block 104 to realize the sliding connection between the mounting block 101 and the inner scraper 102; the first sliding hole 1011 is also used for mounting the first elastic member;

[0036] Two second sliding blocks 105 are slidably connected in the second sliding hole 1012, two outer scrapers 103 are fixedly connected with the two second sliding blocks 105 respectively, the second elastic member is located in the second sliding hole 1012 and between the two second sliding blocks 105; the second sliding hole 1012 cooperates with the second sliding block 105 to realize the sliding connection between the mounting block 101 and the outer scraper 103; the second sliding hole 1012 is also used for mounting the second elastic member;

[0037] A limiting groove 1013 is formed in the side of the mounting block 101 away from the first motor 2 along the length direction thereof, the limiting groove 1013 is in communication with the first sliding hole 1011 and the second sliding hole 1012, the two inner scrapers 102 and the two outer scrapers 103 all extend out of the mounting block 101 through the limiting groove 1013, the limiting groove 1013 is used to limit the movement of the inner scraper 102 and the outer scraper 103, the inner scraper 102 and the outer scraper 103 can only move along the length direction of the limiting groove 1013, and the first sliding block 104 and the second sliding block 105 can also be limited from rotating after passing through the limiting groove 1013, so that the first sliding block 104 can only slide along the length direction of the first sliding hole 1011 and the second sliding block 105 can only slide along the length direction of the second sliding hole 1012.

[0038] Specifically, the first elastic member includes a first fixed part 106 and two compression springs 107, the first fixed part 106 is fixed in the middle of the first sliding hole 1011, the two compression springs 107 are arranged on the two sides of the first fixed part 106 respectively, one end of the compression spring 107 is fixed with the first fixed part 106, and the other end is fixed with the corresponding inner scraper 102, the first fixed part 106 is used to fix one end of the compression spring 107 with the mounting block 101, and the compression spring 107 is used to press the inner scraper 102 against the corresponding outer scraper 103, because the first fixed part 106 is fixed with the first sliding hole 1011, therefore, the two compression springs 107 do not interfere with each other.

[0039] Specifically, the second elastic element includes a second fixing part 108 and two tension springs 109. The second fixing part 108 is fixed in the middle of the second sliding hole 1012. The two tension springs 109 are respectively disposed on both sides of the second fixing part 108. One end of the tension spring 109 is fixed to the second fixing part 108, and the other end is fixed to its corresponding outer scraper 103. The second fixing part 108 is used to fix one end of the tension spring 109 to the mounting block 101. The tension spring 109 is used to pull the outer scraper 103 to its corresponding inner scraper 102. Since the second fixing part 108 is fixed to the second sliding hole 1012, the two tension springs 109 do not interfere with each other.

[0040] In this embodiment, the first fixing part 106 and the second fixing part 108 can be fixed to the mounting block 101 by screws. For example, after placing the first fixing part 106 and the second fixing part 108 into the corresponding positions in the first sliding hole 1011 and the second sliding hole 1012 respectively, the mounting block 101, the first fixing part 106 and the second fixing part 108 are fixed together by screws.

[0041] In this embodiment, the compression spring 107 can be fixed to the first fixing part 106 and the first slider 104 first, and then the first fixing part 106 can be fixed to the mounting block 101. After the first fixing part 106 is fixed to the mounting block 101, the inner scraper 102 can be fixed to the first slider 104. The first slider 104 and the inner scraper 102 can be connected by threads or by plug-in connection. For example, a fixing hole can be opened on the first slider 104, and the inner scraper 102 can be inserted into the fixing hole. The fixing hole and the inner scraper 102 are tightly fitted to achieve a fixed connection between the inner scraper 102 and the first slider 104. In order to facilitate the connection between the inner scraper 102 and the first slider 104, the first slider 104 can be pushed so that the first slider 104 is in the position corresponding to the limiting groove 1013, so that the inner scraper 102 can pass through the limiting groove 1013 and be fixedly connected to the first slider 104.

[0042] In the embodiment, the stretching spring 109 can be fixed with the second fixing part 108 and the second sliding block 105 first, and then the second fixing part 108 is fixed with the mounting block 101, the outer scraper 103 can be fixed with the second sliding block 105 after the second fixing part 108 is fixed with the mounting block 101, the second sliding block 105 and the outer scraper 103 can be connected through threads or plug-in connection, for example, a fixing hole is formed on the second sliding block 105, the outer scraper 103 is inserted into the fixing hole, the fixing hole is tightly matched with the outer scraper 103, so that the outer scraper 103 is fixedly connected with the second sliding block 105, in order to facilitate the connection between the outer scraper 103 and the second sliding block 105, the second sliding block 105 can be pulled, so that the second sliding block 105 is located at the position corresponding to the limiting groove 1013, and the outer scraper 103 is conveniently fixedly connected with the second sliding block 105 through the limiting groove 1013.

[0043] In the embodiment, the second sliding hole 1012 is located between the first sliding hole 1011 and the first motor 2, the inner scraper 102 needs to be installed before the outer scraper 103 is installed, so as to prevent the outer scraper 103 from hindering the installation of the first sliding block 104.

[0044] Further, the mounting column 3 is coaxially fixed on the motor shaft of the first motor 2, the mounting column 3 is located between the first motor 2 and the mounting block 101, and the sliding sleeve 4 is slidably connected to the mounting column 3.

[0045] The first guide ring 5 is arranged at the middle of the side of the mounting block 101 away from the first motor 2, the first pull rope 6 is connected to each of the two inner scrapers 102, and the first pull rope 6 passes through the first guide ring 5 and is connected to the sliding sleeve 4.

[0046] The second guide ring 7 is arranged at each end of the side of the mounting block 101 away from the first motor 2, the second pull rope 8 is connected to each of the two outer scrapers 103, and the second pull rope 8 passes through the corresponding second guide ring 7 and is connected to the sliding sleeve 4; the mounting column 3 is arranged for mounting the sliding sleeve 4, the sliding sleeve 4 is arranged for driving the first pull rope 6 and the second pull rope 8 to move, the first pull rope 6 and the second pull rope 8 are arranged for pulling the inner scraper 102 and the outer scraper 103 to move, and the first guide ring 5 and the second guide ring 7 are arranged for guiding the directions of the first pull rope 6 and the second pull rope 8, so as to guide the directions of the inner scraper 102 and the outer scraper 103 when the inner scraper 102 and the outer scraper 103 are pulled by the first pull rope 6 and the second pull rope 8 respectively, when the sliding sleeve 4 slides towards the first motor 2, the first pull rope 6 and the second pull rope 8 can drive the inner scraper 102 and the outer scraper 103 to move away from each other, so as to facilitate the placement of the pipe wall of the exhaust pipe between the inner scraper 102 and the outer scraper 103.

[0047] Further, the pull ring 9 is coaxially fixed on the sliding sleeve 4, the outer diameter of the pull ring 9 is greater than the outer diameter of the sliding sleeve 4, and the pull ring 9 is arranged for facilitating the sliding of the sliding sleeve 4 towards the first motor 2.

[0048] Further, the mounting column 3 is provided with a guide groove 10 along the axial direction, and the inner wall of the sliding sleeve 4 is provided with a guide strip 11 matched with the guide groove 10, the guide strip 11 can slide along the length direction of the guide groove 10, and the guide strip 11 and the guide groove 10 are matched to prevent the sliding sleeve 4 from rotating.

[0049] Further, the first motor 2 is coaxially provided with a second motor 12 away from the mounting block 101, the outer shell of the second motor 12 is slidably connected with a nut 13 along the axial direction of the second motor 12, the output shaft of the second motor 12 is threadedly connected with the nut 13 to drive the nut 13 to move along the axial direction of the second motor 12, the nut 13 is fixed with a pull rod 14, and the pull rod 14 is provided with a hook portion 15 away from the nut 13, the hook portion 15 extends between the pull ring 9 and the mounting block 101, the second motor 12 and the nut 13 are matched to drive the nut 13 to move along the axial direction of the second motor 12 by rotating the output shaft of the second motor 12, the nut 13 can drive the hook portion 15 on the pull rod 14 to move, so that the hook portion 15 can hook the pull ring 9 and drive the pull ring 9 to approach the first motor 2, thereby realizing that the inner scraper 102 and the outer scraper 103 are away from each other.

[0050] Further, the utility model further includes a shell 16, the first motor 2 and the second motor 12 are fixed in the shell 16, the output shaft of the first motor 2 is connected with the mounting column 3 through the shell 16, and one end of the pull rod 14 is connected with the nut 13 through the shell 16, the shell 16 is used for mounting the first motor 2 and the second motor 12, and the pull rod 14 is matched with the shell 16 to realize the sliding connection relationship between the nut 13 and the outer shell of the second motor 12.

[0051] Further, the outer wall of the shell 16 is provided with an accommodating groove 17 along the length direction of the pull rod 14, and the pull rod 14 is located in the accommodating groove 17, the accommodating groove 17 further limits the movement of the pull rod 14, so that the pull rod 14 moves more stably, and the accommodating groove 17 can also be used for accommodating the pull rod 14.

[0052] It should be noted that although the utility model is disclosed as above with specific embodiments, the above embodiments are not used to limit the utility model, and those skilled in the art can make various changes and decorations without departing from the spirit and scope of the utility model, so the protection scope of the utility model is defined by the claim.

Claims

1. A deburring device for automobile exhaust pipes, characterized in that, include: A scraper mechanism includes a mounting block on which two inner scrapers and two outer scrapers are slidably connected along its length. The two inner scrapers are located between the two outer scrapers. A first elastic element is provided between the two inner scrapers to press the two inner scrapers against their corresponding outer scrapers. A second elastic element is provided between the two outer scrapers to pull the two outer scrapers toward their corresponding inner scrapers. A first motor, the output shaft of which is fixedly connected to one side of the mounting block, the output shaft of which is located between the two inner scrapers, and the length directions of the output shaft of the first motor, the two inner scrapers, and the two outer scrapers are all consistent.

2. The deburring device for automobile exhaust pipes as described in claim 1, characterized in that, The end face of the mounting block is provided with a first sliding hole and a second sliding hole along the length direction of the mounting block; Two first sliders are slidably connected inside the first sliding hole, and the two inner scrapers are respectively fixedly connected to the two first sliders. The first elastic element is located inside the first sliding hole and between the two first sliders. Two second sliders are slidably connected inside the second sliding hole, and the two outer scrapers are respectively fixedly connected to the two second sliders. The second elastic element is located inside the second sliding hole and between the two second sliders. The mounting block has a limiting groove along its length on the side opposite to the first motor. The limiting groove is connected to both the first sliding hole and the second sliding hole. Both inner scrapers and both outer scrapers extend out of the mounting block through the limiting groove.

3. The deburring device for automobile exhaust pipes as described in claim 2, characterized in that, The first elastic element includes a first fixing part and two compression springs. The first fixing part is fixed to the middle of the first sliding hole, and the two compression springs are respectively disposed on both sides of the first fixing part. One end of the compression spring is fixed to the first fixing part, and the other end is fixed to the corresponding inner scraper.

4. The deburring device for automobile exhaust pipes as described in claim 2, characterized in that, The second elastic element includes a second fixing part and two tension springs. The second fixing part is fixed in the middle of the second sliding hole, and the two tension springs are respectively disposed on both sides of the second fixing part. One end of each tension spring is fixed to the second fixing part, and the other end is fixed to the corresponding outer scraper.

5. The deburring device for automobile exhaust pipes as described in claim 1, characterized in that, A mounting post is coaxially fixed on the motor shaft of the first motor. The mounting post is located between the first motor and the mounting block. A sliding sleeve is slidably connected to the mounting post. The mounting block has a first guide ring in the middle of the side facing away from the first motor. Both inner scrapers are connected to a first pull rope, which passes through the first guide ring and is connected to the sliding sleeve. The mounting block is provided with second guide rings at both ends of the side facing away from the first motor, and a second pull rope is connected to each of the two outer scrapers. The second pull rope passes through its corresponding second guide ring and is connected to the sliding sleeve.

6. The deburring device for automobile exhaust pipes as described in claim 5, characterized in that, A pull ring is coaxially fixed on the sliding sleeve, and the outer diameter of the pull ring is larger than the outer diameter of the sliding sleeve.

7. The deburring device for automobile exhaust pipes as described in claim 5, characterized in that, The mounting post has a guide groove along its axial direction on its outer periphery, and the inner wall of the sliding sleeve has a guide strip that cooperates with the guide groove.

8. The deburring device for automobile exhaust pipes as described in claim 6, characterized in that, A second motor is coaxially mounted on the end of the first motor away from the mounting block. A nut is slidably connected to the housing of the second motor along the axial direction of the second motor. The output shaft of the second motor is threadedly connected to the nut to drive the nut to move along the axial direction of the second motor. A pull rod is fixed on the nut. A hook is provided at the end of the pull rod away from the nut. The hook extends between the pull ring and the mounting block.

9. The deburring device for automobile exhaust pipes as described in claim 8, characterized in that, It also includes a housing, in which the first motor and the second motor are both fixed. The output shaft of the first motor passes through the housing and is connected to the mounting post. One end of the pull rod passes through the housing and is connected to the nut.

10. The deburring device for automobile exhaust pipes as described in claim 9, characterized in that, The outer wall of the housing is provided with a receiving groove along the length of the pull rod, and the pull rod is located in the receiving groove.

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