A tube cutting device for automobile manufacturing

Abstract

This invention discloses a pipe cutting device for automobile manufacturing, belonging to the field of pipe cutting technology. It includes: multiple movable columns arranged in a circumferential array within a rotating ring, the movable columns being radially slidably connected to the rotating ring; and multiple conveyor wheels, each conveyor wheel rotatably connected to one side of the movable columns via a connecting shaft. The synchronous rotation of the multiple conveyor wheels drives the pipe to move axially, while the multiple movable columns drive the conveyor wheels to move radially synchronously, serving as a radial limit for the pipe. In this invention, after cutting, a sensor, in conjunction with a control module, controls the drive motor to self-lock, and the rotating ring is locked by a drive gear and an external gear ring. Then, an adjusting motor drives the conveyor wheels to rotate in the same direction, automatically feeding the pipe towards the clamping block. The sensor detects the moving distance in real time and locks again when the cutting length requirement is met, achieving continuous pipe feeding and improving the efficiency and automation of pipe cutting.

Description

Technical Field

[0001] This invention belongs to the field of pipe cutting technology, and in particular relates to a pipe cutting device for automobile manufacturing. Background Technology

[0002] In automobile manufacturing, tubing is widely used in critical components such as exhaust systems, body structural parts, chassis frames, and cooling pipes. With the trend towards lightweight and increasingly complex automobile structures, the types of tubing are becoming increasingly diverse, including stainless steel tubing, aluminum alloy tubing, galvanized tubing, and high-strength steel tubing. To meet the requirements of vehicle assembly precision and welding quality, the quality of the tubing's cut surface, dimensional accuracy, and cutting efficiency have become key technical indicators in the manufacturing process.

[0003] According to Chinese Patent Publication No. CN111185653A, a plasma contour cutting device and its processing method for pipe intersection lines are disclosed. The device includes a base frame, on which a contour template with a contour surface at the front end is mounted. A rotating shaft that can rotate relative to the contour template is inserted through the middle of the contour template. A disc-shaped fixing frame is fixedly connected to the front end of the rotating shaft. A clamping mechanism for clamping the pipe is mounted on the base frame in front of the disc-shaped fixing frame. A trajectory rod is mounted at one end of the disc-shaped fixing frame, the rear end of which abuts against the contour surface of the contour template and can move back and forth under its action. A plasma cutting head for inserting into the pipe and cutting it is connected to the front end of the trajectory rod.

[0004] However, in the above solution, rotating two locking bolts causes two workpiece clamps to move closer to each other, and the two workpiece clamps hold the pipe together. The pipe cannot be automatically fed, resulting in the following disadvantages: when multiple sections of the same pipe need to be cut, the operator needs to repeatedly loosen, move axially, and re-clamp the pipe, thereby reducing the continuity of pipe cutting and processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that when multiple sections of the same pipe need to be cut, workers need to repeatedly loosen, move axially, and re-clamp the pipe, which reduces the continuity of pipe cutting and processing efficiency. Therefore, this invention proposes a pipe cutting device for automobile manufacturing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A tube cutting device for automobile manufacturing includes an assembly plate and a rotating ring, the rotating ring being rotatably connected to one side of the assembly plate, and further includes: Multiple movable columns are arranged in a circular array within the rotating ring, and the movable columns are radially slidably connected to the rotating ring. Multiple conveyor wheels are rotatably connected to one side of a moving column via a connecting shaft. The synchronous rotation of the multiple conveyor wheels can drive the pipe to move axially, and the multiple moving columns drive the conveyor wheels to move radially synchronously, which is used to limit the radial movement of the pipe.

[0007] Preferred options also include: Multiple transmission gears are provided, and a cavity is formed inside the rotating ring, through which the transmission gears are rotatably connected; Multiple racks are connected to one side of a movable column, and the racks are meshed with one side of a transmission gear. The racks are located inside a cavity. An internal gear ring is rotatably connected to the cavity, and the internal gear ring meshes with a transmission gear.

[0008] Preferred options also include: Multiple rotating shafts are provided, and the moving column has an internal cavity, with the rotating shafts vertically rotatably connected to the internal cavity; Multiple second bevel gears, the second bevel gears being connected to one end of the rotating shaft near the conveyor wheel; Multiple first bevel gears are fixedly connected to the outer surface of the connecting shaft, and the first bevel gears mesh with second bevel gears. Multiple rotating rods are rotatably connected to the inner wall of a rotating ring. A sliding groove is provided at the end of the rotating shaft away from the conveying wheel. The rotating rods are slidably connected in the sliding grooves and are used to drive the rotating shaft to rotate synchronously. Multiple adjusting motors are fixedly installed on the outer circumference of the rotating ring, and one end of the rotating rod is connected to the output shaft of the adjusting motor.

[0009] Preferred options also include: The external toothed ring is fixedly connected to the outer circumference of the rotating ring; The drive motor is fixedly mounted on the side of the assembly plate away from the rotating ring; A drive gear is connected to one end of the output shaft of a drive motor and meshes with an external gear ring.

[0010] Preferred options also include: Multiple sensors are connected to one side of the moving column to monitor the pipe's operating conditions in real time.

[0011] Preferred options also include: A movable rod is connected to one side of the internal gear ring. The rotating ring has an arc-shaped groove on the side away from the assembly plate, and the movable rod is slidably connected in the arc-shaped groove. A sliding block is connected to the side of the moving rod away from the internal gear ring, and the sliding block is located outside the cavity; The limit bolt is threaded onto the side of the sliding block away from the moving rod; Multiple threaded holes are arranged at equal angles and intervals on the outer periphery of the arc-shaped groove, and the limiting bolt can be threadedly connected to the threaded holes.

[0012] Preferred options also include: The mounting bracket is located on one side of the assembly plate; Two clamping blocks are symmetrically slidably mounted on the top of the fixing frame, and clamping grooves are provided on the opposite side of each clamping block. Two sets of ball bearings, each set consisting of multiple ball bearings, are disposed within a clamping groove.

[0013] Preferred options also include: The positive and negative lead screws are provided with a movable groove on the top of the fixed frame. The positive and negative lead screws are rotatably connected in the movable groove. The positive and negative lead screws are symmetrically arranged around their own center position, and the thread directions on both sides of the positive and negative lead screws are opposite. Two lead screw seats are connected to the bottom of the clamping block and slidably connected in the moving groove. The lead screw seats are connected to the forward and reverse lead screw transmission.

[0014] Preferred options also include: The base plate, the assembly plate is fixedly connected to the base plate, and the fixing frame is fixedly connected to the top of the base plate; A plasma cutting mechanism is fixedly installed on one side of the assembly plate, and the plasma cutting mechanism is located between the assembly plate and the fixed frame.

[0015] Preferred options also include: A protective cover is attached to one side of the assembly plate, and the drive motor is located inside the protective cover.

[0016] Compared with existing technologies, a tube cutting device for automobile manufacturing that adopts the above-mentioned technical solution has the following beneficial effects: 1. In this invention, the radial and axial limits of pipes of different specifications are achieved by the synchronous movement of three moving columns and conveying wheels and the self-locking characteristics of the adjusting motor, thereby improving the adaptability and versatility of the equipment for different pipes. In addition, after the cutting is completed, the sensor works with the control module to control the self-locking of the drive motor, and locks the rotating ring with the drive gear and the external gear ring. Then, the adjusting motor drives the conveying wheel to rotate in the same direction, driving the pipe to be automatically fed towards the clamping block. The sensor detects the moving distance in real time and locks again when the cutting length requirement is met, thereby realizing continuous feeding of pipes and improving the efficiency and automation of pipe cutting.

[0017] 2. In this invention, the drive motor controls the rotation angle of the pipe, and adjusting the motor controls the axial movement of the pipe. The two movements can be operated independently or in conjunction to achieve various grooving operations. Controlling the axial movement of the pipe independently can process axial straight grooves, controlling the circumferential rotation of the pipe independently can process annular grooves or arc grooves, and circumferential rotation and axial feed can be synchronized to process spiral grooves, inclined grooves and other structures. This allows the equipment to not only complete the circumferential cutting of pipes, but also to complete various grooving and other irregular cutting operations on the pipes, fully meeting diverse processing requirements.

[0018] 3. In this invention, by driving the positive and negative lead screws to rotate, the two lead screw seats and clamping blocks can move synchronously in opposite directions, so that the balls in the clamping groove are tightly attached to the outer wall of the pipe. This not only provides reliable radial support for the pipe, but also allows the pipe to move freely without being restricted by the ball structure. By constructing stable radial support at both ends of the pipe, the vibration, thermal stress and cutting force generated by the cutting operation can be offset, ensuring the positioning accuracy of the cutting edge, groove and other processing positions, and improving the overall processing quality and finished product qualification rate of the pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 3 This is a three-dimensional structural diagram of the drive motor, assembly plate, and plasma cutting mechanism in this invention; Figure 4 This is a schematic diagram of the internal cross-sectional structure of the rotating ring in this invention; Figure 5 This is a three-dimensional disassembled structural diagram of the internal toothed ring, sliding block, moving rod, and limiting bolt in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of section A; Figure 7 This is a schematic diagram of the internal structure of the rotating ring in this invention; Figure 8 This is a schematic diagram of the internal cross-sectional structure of the movable column in this invention; Figure 9 This is a three-dimensional disassembled structural diagram of the fixing frame, clamping block, lead screw seat, and positive and negative lead screws of the present invention.

[0020] Legend: 1. Base plate; 2. Protective cover; 3. Assembly plate; 401. Fixing frame; 402. Clamping block; 403. Ball bearing; 404. Lead screw seat; 405. Positive and negative lead screws; 5. Plasma cutting mechanism; 601. Rotating ring; 602. External gear ring; 603. Drive gear; 604. Drive motor; 605. Adjusting motor; 606. Transmission gear; 607. Internal gear ring; 608. Moving column; 609. Moving rod; 610. Threaded hole; 611. Sliding block; 612. Limit bolt; 613. Rack; 614. Conveyor wheel; 615. Sensor; 616. Rotating rod; 617. Rotating shaft; 618. First bevel gear; 619. Second bevel gear. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-4 This invention provides a technical solution: a pipe cutting device for automobile manufacturing, comprising an assembly plate 3 and a rotating ring 601, wherein the rotating ring 601 is rotatably connected to one side of the assembly plate 3, wherein a circular groove is formed on one side of the assembly plate 3, and a connecting ring is connected to one side of the rotating ring 601, the connecting ring being rotatably connected within the circular groove, and further comprising: The base plate 1, the assembly plate 3 is fixedly connected to the base plate 1, and the fixing frame 401 is fixedly connected to the top of the base plate 1. The base plate 1 is a rectangular plate. The plasma cutting mechanism 5 is fixedly installed on one side of the assembly plate 3. The plasma cutting mechanism 5 is located between the assembly plate 3 and the fixing frame 401. The model of the plasma cutting mechanism 5 is Powermax105SYNC. The plasma cutting mechanism 5 mainly consists of a main power supply, a gas circuit system, a control unit and a cutting head. The cutting head is installed on one side of the assembly plate 3 and is used to cut the pipe directly below. This is existing technology and therefore will not be described in detail. The protective cover 2 is fixedly connected to one side of the assembly plate 3. The drive motor 604 is located inside the protective cover 2. The protective cover 2 has a trapezoidal structure and is used to protect the drive motor 604 to prevent the metal slag generated during cutting from affecting the drive motor 604. Three movable columns 608 are arranged in a circular array within the rotating ring 601. The movable columns 608 are radially slidably connected to the rotating ring 601. The rotating ring 601 has three through slots along its inner circumferential direction, and the movable columns 608 are slidably connected within the through slots. The cross-sectional shape of the movable columns 608 is rectangular. Three sets of conveyor wheels 614, each set of conveyor wheels 614 consists of two symmetrically arranged conveyor wheels 614. The two conveyor wheels 614 in the same set are rotatably connected to both sides of the moving column 608 through a connecting shaft. The synchronous rotation of multiple conveyor wheels 614 can drive the pipe to move axially. Multiple moving columns 608 drive the conveyor wheels 614 to move radially synchronously, which is used to limit the radial movement of the pipe. The connecting shaft is laterally rotatably connected to the inner cavity of the moving column 608. The two conveyor wheels 614 in the same set are connected to both ends of the connecting shaft, and the conveyor wheels 614 are provided with anti-slip texture. Please see Figure 4 and Figure 7 There are three transmission gears 606. A cavity is opened inside the rotating ring 601. The transmission gears 606 are rotatably connected to the cavity. A rotating shaft is connected to the transmission gears 606 and is rotatably connected to the cavity. Three racks 613 are connected to one side of the movable column 608, and the racks 613 are meshed with one side of the transmission gear 606. The racks 613 are located in the cavity. An internal gear ring 607 is rotatably connected to the cavity. The internal gear ring 607 meshes with the transmission gear 606, wherein the inner wall of the internal gear ring 607 is in contact with the inner wall of the cavity. Please see Figure 8 Three rotating shafts 617; the moving column 608 has an inner cavity, and the rotating shafts 617 are vertically rotatably connected to the inner cavity. Three second bevel gears 619 are connected to one end of the rotating shaft 617 near the conveyor wheel 614. Three first bevel gears 618 are fixedly connected to the outer surface of the connecting shaft, and the first bevel gears 618 are meshed with the second bevel gears 619. Three rotating rods 616 are rotatably connected to the inner wall of the rotating ring 601. The end of the rotating shaft 617 away from the conveying wheel 614 has a sliding groove, and the rotating rods 616 are slidably connected in the sliding groove. The cross-sectional shape of the rotating rods 616 and the sliding groove is a regular hexagon. The end of the rotating rod 616 away from the rotating shaft 617 has a common round shaft structure, which is used to cooperate with the bearing and rotate in a rotating connection with the rotating ring 601. Three adjusting motors 605 are fixedly installed on the outer periphery of the rotating ring 601. One end of the rotating rod 616 is connected to the output shaft of the adjusting motor 605. The adjusting motor 605 is configured as a self-locking motor. Please see Figure 2 The external toothed ring 602 is fixedly connected to the outer circumference of the rotating ring 601; The drive motor 604 is fixedly installed on the side of the assembly plate 3 away from the rotating ring 601. The drive motor 604 is a self-locking motor, which is used to cooperate with the drive gear 603 and the external gear ring 602 to limit the rotation ring 601. A drive gear 603 is connected to one end of the output shaft of a drive motor 604, and the drive gear 603 is meshed with an external gear ring 602. Please see Figure 1 , Figure 3 and Figure 7 Three sensors 615 are connected to one side of the moving column 608 for real-time monitoring of the pipe's working condition. The sensors 615 combine a laser velocity and length measuring instrument with a Hall angle sensor. The laser velocity and length measuring instrument is used for non-contact detection of the pipe's travel distance and provides real-time feedback of the cutting length data. The Hall angle sensor is used to detect the pipe's rotation angle. Furthermore, both the drive motor 604 and the adjusting motor 605 have control modules. The sensors 615 and the control modules are connected wirelessly. The sensors 615, in conjunction with the control modules, can control the start and stop of the drive motor 604 and the adjusting motor 605, achieving closed-loop control of fixed-length pipe cutting and circumferential positioning. like Figures 5-6 The movable rod 609 is connected to one side of the internal gear ring 607. The rotating ring 601 has an arc-shaped groove on the side away from the assembly plate 3. The movable rod 609 is slidably connected in the arc-shaped groove. The axis of the arc-shaped groove and the axis of the rotating ring 601 are on the same axis. A sliding block 611 is connected to the side of the moving rod 609 away from the internal toothed ring 607, and the sliding block 611 is located outside the cavity; The limiting bolt 612 is threadedly connected to the side of the sliding block 611 away from the moving rod 609; Multiple threaded holes 610 are arranged at equal angles and intervals on the outer periphery of the arc-shaped groove. The limiting bolt 612 can be threadedly connected to the threaded holes 610. The axis of the arc formed by the axial connection of the multiple threaded holes 610 is on the same axis as the axis of the rotating ring 601.

[0023] The specific usage method and working principle are as follows: the operator passes the pipe through the rotating ring 601 and the circular groove, and adjusts the relative position of the pipe in the rotating ring 601 according to the required cutting length. The clamping block 402 limits one end of the pipe. Afterwards, the worker tightened the limiting bolt 612, causing it to disengage from the threaded hole 610, thereby releasing the limiting effect on the sliding block 611. (See reference...) Figure 4 , Figure 6 The operator drives the sliding block 611 to rotate the moving rod 609 counterclockwise in the arc groove. The moving rod 609 drives the internal gear ring 607 to rotate counterclockwise. The internal gear ring 607 drives the three transmission gears 606 to rotate clockwise synchronously. The three transmission gears 606 drive the rack 613 to move radially towards the axis of the rotating ring 601 synchronously. The rack 613 drives the conveying wheel 614 to approach the pipe through the moving column 608 and finally fits against the outer surface of the pipe, completing the radial limit of the pipe. During this process, the rotating rod 616 slides relative to the rotating shaft 617. At this time, the three adjusting motors 605 are all in the stopped self-locking state. The adjusting motors 605 achieve self-locking of the conveying wheel 614 through the mechanical cooperation of the rotating rod 616, the rotating shaft 617, the first bevel gear 618 and the second bevel gear 619, so that the conveying wheel 614 can limit the pipe axially. This makes the equipment applicable to pipes of different specifications and improves the applicability of the equipment. Then, the drive motor 604 starts, which drives the drive gear 603 to rotate. The drive gear 603 drives the external gear ring 602 to rotate, and the external gear ring 602 drives the rotating ring 601 to rotate. The rotating ring 601 drives the pipe to rotate along its own axis through the moving column 608 and the conveying wheel 614. With the help of the plasma cutting mechanism 5, circumferential cutting can be achieved. After cutting is completed, sensor 615 detects the rotation angle of the pipe and, in conjunction with the control module, stops drive motor 604. At this time, drive motor 604, through its self-locking characteristic, works with drive gear 603 and external gear ring 602 to limit the rotation ring 601. Then, the control module drives three adjusting motors 605 to run synchronously. Adjusting motors 605 drive rotating rod 616 to rotate, rotating rod 616 drives rotating shaft 617 to rotate via moving groove, rotating shaft 617 drives second bevel gear 619 to rotate, second bevel gear 619 drives first bevel gear 618 to rotate, and first bevel gear 618... The connecting shaft rotates, which in turn drives two conveyor wheels 614 to rotate. The multiple conveyor wheels 614 rotate in the same direction, causing the pipe to move towards the clamping block 402. The sensor 615 detects the moving distance of the pipe in real time. When the cutting length requirement is met, the sensor 615, in conjunction with the control module, controls the adjustment motor 605 to stop and lock, thereby achieving axial limiting of the pipe again. Afterward, the plasma cutting mechanism 5, in conjunction with the drive motor 604, performs circumferential cutting on the pipe again. By driving the axial movement of the pipe through the rotation of multiple conveyor wheels 614 in the same direction, continuous feeding and cutting of the pipe can be achieved, improving the efficiency of cutting and processing. Furthermore, the drive motor 604 controls the rotation angle of the pipe, and the adjustment motor 605 drives the pipe to move axially. The two movements can be operated independently or in conjunction to achieve various grooving operations. Controlling the axial movement of the pipe independently can process axial straight grooves, controlling the circumferential rotation of the pipe independently can process annular grooves or arc grooves, and circumferential rotation and axial feed can be synchronized to process spiral grooves, inclined grooves and other structures. This allows the equipment to not only complete the circumferential cutting of pipes, but also to complete various grooving and other irregular cutting operations on the pipes, fully meeting diverse processing requirements.

[0024] Please see Figure 1 and Figure 8 It also includes: The fixing bracket 401 is located on one side of the assembly plate 3, and the fixing bracket 401 has a U-shaped structure; Two clamping blocks 402 are symmetrically slidably disposed on the top of the fixing frame 401. Each clamping block 402 has a clamping groove on the opposite side, wherein the cross-section of the clamping groove is arc-shaped. Two sets of balls 403, each set of balls 403 consists of three balls 403, the balls 403 are disposed in the clamping groove, wherein the balls 403 are able to roll relative to the clamping block 402; Please see Figure 8 The positive and negative lead screws 405 are provided. The top of the fixed frame 401 has a movable groove. The positive and negative lead screws 405 are rotatably connected in the movable groove. The positive and negative lead screws 405 are symmetrically arranged around their own center position, and the thread directions on both sides of the positive and negative lead screws 405 are opposite. The movable groove is a rectangular groove arranged along the length of the fixed frame 401. One end of the positive and negative lead screws 405 extends to the outside of the movable groove and is connected to a crank handle, which makes it convenient for the operator to rotate the positive and negative lead screws 405. Furthermore, the threads of the positive and negative lead screws 405 adopt a single-line trapezoidal thread structure. Utilizing the mechanical self-locking characteristics of the trapezoidal thread, the lead screw seat 404 remains in a fixed position after the positive and negative lead screws 405 stop rotating. Two lead screw seats 404 are connected to the bottom of the clamping block 402. The lead screw seats 404 are slidably connected in the moving groove. The lead screw seats 404 are connected to the positive and negative lead screws 405 for transmission. The cross-sectional shape of the lead screw seats 404 is rectangular. The lead screw seats 404 are slidably connected in the moving groove.

[0025] The specific usage method and working principle are as follows: After the pipe passes between the two clamping blocks 402, the operator turns the crank handle, which drives the positive and negative lead screws 405 to rotate. The positive and negative lead screws 405 drive the two lead screw seats 404 to move closer to each other, so that the two clamping blocks 402 drive the clamping grooves to move closer to the pipe. The ball bearings 403 in the clamping grooves are in contact with the outer surface of the pipe. Due to the setting of the ball bearings 403, the rotation and axial movement of the pipe itself are not restricted, and radial support is achieved for the pipe. During the pipe cutting process, a stable support structure is formed at both ends of the pipe, which effectively resists the vibration, thermal stress and cutting force generated by the plasma cutting operation, prevents the pipe from shaking, shifting and local deformation, ensures the accuracy of the cutting edge, groove and other processing positions, and improves the overall processing accuracy and finished product qualification rate.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tube cutting device for automobile manufacturing, comprising an assembly plate (3) and a rotating ring (601), the rotating ring (601) being rotatably connected to one side of the assembly plate (3), characterized in that, Also includes: Multiple movable columns (608) are arranged in a circular array within the rotating ring (601), and the movable columns (608) are radially slidably connected to the rotating ring (601); Multiple conveyor wheels (614) are rotatably connected to one side of the moving column (608) via a connecting shaft. The synchronous rotation of the multiple conveyor wheels (614) can drive the pipe to move axially, and the multiple moving columns (608) drive the conveyor wheels (614) to move radially synchronously, which is used to limit the radial movement of the pipe.

2. The pipe cutting equipment for automobile manufacturing according to claim 1, characterized in that, Also includes: Multiple transmission gears (606) are provided, and a cavity is provided inside the rotating ring (601), and the transmission gears (606) are rotatably connected to the cavity; Multiple racks (613) are connected to one side of the movable column (608), and the racks (613) are meshed with one side of the transmission gear (606). The racks (613) are located in the cavity. An internal gear ring (607) is rotatably connected to the cavity, and the internal gear ring (607) meshes with the transmission gear (606).

3. The pipe cutting equipment for automobile manufacturing according to claim 1, characterized in that, Also includes: Multiple rotating shafts (617) are provided, and the moving column (608) has an inner cavity inside, and the rotating shafts (617) are vertically rotatably connected to the inner cavity; Multiple second bevel gears (619) are connected to one end of the rotating shaft (617) near the conveyor wheel (614); Multiple first bevel gears (618) are fixedly connected to the outer surface of the connecting shaft, and the first bevel gears (618) mesh with second bevel gears (619); Multiple rotating rods (616) are rotatably connected to the inner wall of the rotating ring (601). A sliding groove is provided at one end of the rotating shaft (617) away from the conveying wheel (614). The rotating rods (616) are slidably connected in the sliding groove. The rotating rods (616) are used to drive the rotating shaft (617) to rotate synchronously. Multiple adjusting motors (605) are fixedly installed on the outer periphery of the rotating ring (601), and one end of the rotating rod (616) is connected to the output shaft of the adjusting motor (605).

4. The pipe cutting equipment for automobile manufacturing according to claim 1, characterized in that, Also includes: The external toothed ring (602) is fixedly connected to the outer circumference of the rotating ring (601); The drive motor (604) is fixedly installed on the side of the assembly plate (3) away from the rotating ring (601); A drive gear (603) is connected to one end of the output shaft of a drive motor (604), and the drive gear (603) meshes with an external gear ring (602).

5. The pipe cutting equipment for automobile manufacturing according to claim 1, characterized in that, Also includes: Multiple sensors (615) are connected to one side of the moving column (608) for real-time detection of the pipe's working condition.

6. A pipe cutting device for automobile manufacturing according to claim 2, characterized in that, Also includes: The movable rod (609) is connected to one side of the internal gear ring (607). The rotating ring (601) has an arc-shaped groove on the side away from the assembly plate (3). The movable rod (609) is slidably connected in the arc-shaped groove. A sliding block (611) is connected to the side of the moving rod (609) away from the internal gear ring (607), and the sliding block (611) is located outside the cavity; The limiting bolt (612) is threadedly connected to the side of the sliding block (611) away from the moving rod (609); Multiple threaded holes (610) are arranged at equal angles and intervals on the outer periphery of the arc groove, and the limiting bolt (612) can be threadedly connected to the threaded holes (610).

7. A pipe cutting device for automobile manufacturing according to claim 1, characterized in that, Also includes: A fixing bracket (401) is provided on one side of the assembly plate (3); Two clamping blocks (402) are symmetrically slidably disposed on the top of the fixing frame (401), and clamping grooves are provided on the opposite side of the two clamping blocks (402); Two sets of balls (403), each set of balls (403) consists of multiple balls (403), and the balls (403) are disposed in the clamping groove.

8. A pipe cutting device for automobile manufacturing according to claim 7, characterized in that, Also includes: The positive and negative lead screws (405) are provided with a movable groove on the top of the fixed frame (401). The positive and negative lead screws (405) are rotatably connected in the movable groove. The positive and negative lead screws (405) are symmetrically arranged along their own center position, and the thread directions on both sides of the positive and negative lead screws (405) are opposite. Two lead screw seats (404) are connected to the bottom of the clamp (402), the lead screw seats (404) are slidably connected in the moving groove, and the lead screw seats (404) are connected to the positive and negative lead screws (405) for transmission.

9. A pipe cutting device for automobile manufacturing according to claim 7, characterized in that, Also includes: The base plate (1) is fixedly connected to the mounting plate (3), and the fixing frame (401) is fixedly connected to the top of the base plate (1). The plasma cutting mechanism (5) is fixedly installed on one side of the assembly plate (3), and the plasma cutting mechanism (5) is located between the assembly plate (3) and the fixing frame (401).

10. A pipe cutting device for automobile manufacturing according to claim 4, characterized in that, Also includes: The protective cover (2) is connected to one side of the assembly plate (3), and the drive motor (604) is located inside the protective cover (2).

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