A laser tube cutting machine for processing automotive parts

Abstract

This invention discloses a laser tube cutting machine for automotive parts processing, specifically relating to the field of automotive parts processing technology. It includes: a processing table; a frame disposed on top of the processing table, on which a movable laser cutter is mounted for cutting tubes; and a bearing support seat disposed on the top of the processing table near the frame, with a positioning sleeve installed through its top. A rotating mechanism is provided between the positioning sleeve and the bearing support seat, and the positioning sleeve is driven to rotate by the rotating mechanism. By setting up the bearing support seat, positioning sleeve, and positioning unit, automotive tubes can be inserted and installed at the center of the positioning sleeve. The positioning unit clamps the tubes by the synchronous action of the first and second clamping posts. It can adapt to various outer diameter automotive tubes within a preset adjustment range, achieving rapid centering and clamping, which is not only convenient and efficient but also provides precise and stable positioning.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and in particular to a laser tube cutting machine for automotive parts processing. Background Technology

[0002] Automotive parts are core components in vehicle assembly and production. Tubular automotive components, with their advantages of light weight, high structural strength, and strong adaptability, are widely used in automotive chassis, piping, and body connection structures. When processing tubular automotive parts, it is usually necessary to cut the components to a fixed length according to assembly size requirements. The industry commonly uses pipe cutting machines to complete this cutting process.

[0003] Currently, laser cutting is widely used in the industry for pipe cutting due to its advantages such as non-contact cutting, low cutting loss, and high processing precision. However, in the application of laser pipe cutting machines, different types of automotive pipes have different outer diameter specifications. Not only is the changeover and debugging time spent each time clamping, but the coaxiality of the pipe positioning is also poor. It is easily affected by the pipe diameter and wall thickness, resulting in problems such as incomplete cutting, skewed cuts, and insufficient roundness of the cross-section. At the same time, during continuous cutting operations, the pipes often need to be removed and re-clamped, which seriously affects the processing efficiency.

[0004] Therefore, this application proposes a laser tube cutting machine for processing automotive parts to address the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a laser tube cutting machine for processing automotive parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A laser tube cutting machine for processing automotive parts includes: Processing table; A frame is mounted on top of the processing table, and a movable laser cutter is installed on it for cutting pipes; A bearing support seat is provided on the top of the processing table near the machine frame, and a positioning sleeve is installed through the top of the bearing support seat. A rotating mechanism is provided between the positioning sleeve and the bearing support seat, and the positioning sleeve is driven to rotate by the rotating mechanism. The positioning unit includes fixed seats symmetrically arranged at both ends of the positioning sleeve. A liftable top frame is provided at the middle of the top side of the fixed seat, and rotatable connecting parts are symmetrically arranged at both ends of the top side. A first clamping column is provided at the top of the top frame, and a second clamping column is provided at the top of the connecting parts. A transmission assembly is provided between the bottom end of the top frame and the connecting parts for driving the first clamping column and the second clamping column to move synchronously to clamp the positioning tube. The feeding unit, which is mounted on the bearing support, is used to drive the pipe to move axially within the bearing support.

[0007] As a further embodiment of the present invention, the connecting member includes a connecting shaft, an upper arc arm, and a lower arc plate. The connecting shaft is movably connected to the top of the fixed seat via a bearing, and its top side is connected to the upper arc arm, and its bottom side is connected to the lower arc plate. The upper arc arm is located outside the fixed seat, and the lower arc plate is located inside the fixed seat.

[0008] As a further aspect of the present invention, the transmission assembly includes: The push plate is set inside the fixed base, and symmetrical protrusions are provided at both ends of the push plate. The two protrusions slide and fit against the arc surfaces of the two lower arc plates respectively. The threaded cylinder has its top end fixedly connected to the top frame and its bottom end fixedly connected to the push plate. A second drive motor is provided on the bottom side of the fixed base. The output end of the second drive motor extends into the fixed base and is connected to a threaded column. The top end of the threaded column is screwed into the threaded cylinder.

[0009] As a further embodiment of the present invention, a plurality of springs are symmetrically arranged at both ends of the inner top side of the fixed base, and the bottom end of the springs is connected to the lower arc plate.

[0010] As a further embodiment of the present invention, the positioning center formed by the first clamping post and the two second clamping posts is on the same central axis as the center of the positioning sleeve.

[0011] As a further aspect of the present invention, the rotating mechanism includes: A toothed ring is disposed at one end of the positioning sleeve; A drive shaft is movably connected to the side wall of the bearing support via a bearing, and one end of the shaft is fixed with a gear that meshes with a gear ring. The first drive motor has a synchronous pulley at its output end and at one end of its transmission shaft, and a synchronous belt is fitted between the two synchronous pulleys.

[0012] As a further aspect of the present invention, the feeding unit includes: A support platform is provided at the bottom inner side of the positioning sleeve and between two fixed seats. A V-shaped groove is provided at the top of the support platform, and multiple sets of rotatable guide wheels are embedded in the inner side of the V-shaped groove. A column is installed at the top of the bearing support seat, and a second cylinder is installed at the top of the column. A fixing frame is installed at the bottom of the second cylinder. Two pressure rollers facing the central axis of the positioning sleeve are symmetrically connected to the bottom of the fixing frame through a rotating shaft. A third drive motor is installed on one side of the fixing frame, and the output end of the third drive motor is connected to the pressure rollers.

[0013] As a further embodiment of the present invention, the bottom end of the V-groove is located above the top surface of the fixing base.

[0014] As a further embodiment of the present invention, a linear guide rail is provided at the top of the frame, a mounting base is slidably connected to the bottom side of the linear guide rail, a first cylinder is provided at the top of the mounting base, and the output end of the first cylinder is connected to the laser cutter through a bracket.

[0015] As a further embodiment of the present invention, the top of the processing table is located below the laser cutter and is fixedly connected to a guide member by a bracket, and the bottom end of the guide member is connected to a receiving frame. The guide component includes a frame and several rollers. The frame is inclined, and the rollers are arranged in an array within the frame via a rotating shaft.

[0016] The technical effects and advantages provided by the present invention in the above technical solution are as follows: This invention, by setting a bearing support seat, a positioning sleeve and a positioning unit, allows automotive pipe fittings to be inserted and installed in the center of the positioning sleeve. The positioning unit clamps the pipe fittings by the synchronous movement of the first and second clamping columns. It can adapt to automotive pipe fittings of various outer diameter specifications within a preset adjustment range, achieving rapid centering and clamping. It is not only convenient and efficient, but also provides accurate and stable positioning. After the automotive tube is positioned in the center of the positioning sleeve by the rotating mechanism, the positioning sleeve is driven by the positioning unit to rotate around its own central axis. In conjunction with the action of the laser cutter, it can adapt to two cutting modes to complete the cutting process of the automotive tube. This effectively improves the situation of incomplete cutting and skewed cuts of automotive tubes, and greatly ensures the flatness and roundness accuracy of the cut. By setting up a feeding unit, when the cutting point of the automotive tube needs to be adjusted, the positioning unit opens and releases the tube so that it falls onto the V-groove of the support platform. The first clamping column retracts and descends to create clearance space. The two sets of pressure rollers on the feeding unit abut against the top side of the tube, and the bottom side of the tube relies on the guide rollers arranged in the V-groove to form rolling support. This allows the pressure rollers to smoothly drive the tube to move back and forth axially in the V-groove by friction, thereby quickly and accurately controlling the cutting point of the tube relative to the laser cutter. After the cutting point is adjusted to the correct position, the positioning unit quickly retracts to re-center and clamp the tube. The cutting position adjustment is convenient and efficient, greatly improving the continuous cutting efficiency of automotive tubes. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2This is the second schematic diagram of the overall structure of the present invention; Figure 3 This is a side view of the bearing support housing of the present invention; Figure 4 This is a schematic diagram of the connection structure between the positioning sleeve and the bearing support seat of the present invention; Figure 5 This is a schematic diagram of the structure of the pipe fitting of the present invention when it is positioned in the positioning sleeve; Figure 6 This is a schematic diagram of the internal structure of the fixing base of the present invention; Figure 7 This is a schematic diagram of the connection structure between the connector and the top frame of the present invention; Figure 8 This is a schematic diagram of the internal structure of the positioning sleeve of the present invention; Figure 9 This is a schematic diagram of the pipe fitting of the present invention during transportation; Figure 10 This is a schematic diagram of the connection structure between the frame and the laser cutter of the present invention.

[0018] In the diagram: 100, processing table; 200, frame; 201, laser cutter; 202, mounting base; 203, first cylinder; 204, linear guide; 300, bearing support; 301, positioning sleeve; 3001, gear ring; 3002, gear; 3003, drive shaft; 3004, first drive motor; 3005, synchronous pulley; 3006, synchronous belt; 400, fixed base; 401, first clamping column; 402, top frame; 403, second clamping column; 404, connecting piece. ; 4041, Connecting shaft; 4042, Upper arc arm; 4043, Lower arc plate; 405, Push plate; 4051, Protruding column; 4052, Threaded cylinder; 4053, Threaded column; 4054, Second drive motor; 406, Spring; 500, Support platform; 501, Guide wheel; 600, Column; 601, Second cylinder; 602, Fixing frame; 603, Third drive motor; 604, Pressure roller; 700, Guide component; 701, Frame; 702, Roller; 800, Receiving frame. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of the present invention, 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.

[0020] like Figures 1-2As shown, a laser tube cutting machine for processing automotive parts includes a processing table 100, a frame 200, a bearing support 300, a positioning unit, and a feeding unit. The frame 200 is located on top of the processing table 100, and a movable laser cutter 201 is installed on it for cutting pipes. In one specific embodiment of the present invention, please refer to the following: Figure 10 The top of the frame 200 is provided with a linear guide rail 204, and the bottom side of the linear guide rail 204 is slidably connected with a mounting base 202. The top of the mounting base 202 is provided with a first cylinder 203, and the output end of the first cylinder 203 is connected to the laser cutter 201 through a bracket.

[0021] The laser cutter 201 is positioned above the automotive pipe to be cut. The laser cutter 201 is raised and lowered by a first cylinder 203, allowing control of the distance between the laser cutter 201 and the pipe. Furthermore, the mounting base 202 is moved laterally via a linear guide rail 204, which in turn moves the laser cutter 201 laterally via the first cylinder 203. Therefore, this laser cutting method has two operating modes, as detailed below: The first method: After the automotive pipe is fixed, the first cylinder 203 drives the laser cutter 201 to descend and approach the outer wall of the automotive pipe. The linear guide rail 204 drives the laser cutter 201 to perform a transverse sweeping motion, completing the pipe cutting operation in one go. This method is suitable for processing automotive pipes with small diameters and thin walls. The second method: After the automotive pipe is fixed, the linear guide 204 drives the laser cutter 201 to move directly above the axis of the automotive pipe and keep it stationary. The first cylinder 203 drives the laser cutter 201 to descend and approach the outer wall of the automotive pipe, controlling the automotive pipe to rotate around its own central axis to achieve circumferential cutting. This method is suitable for processing automotive pipes with larger diameters and thicker walls.

[0022] The top of the processing table 100 is located below the laser cutter 201 and is fixedly connected to a guide 700 via a bracket. The bottom end of the guide 700 is connected to a receiving frame 800. The guide member 700 includes a frame 701 and a plurality of rollers 702. The frame 701 is inclined, and the plurality of rollers 702 are arranged in the frame 701 by a rotating shaft array.

[0023] The guide 700 is located below the cutting station. The cut pipe can fall onto the roller 702 on it. The roller 702 is made of rubber elastic material and is arranged at an angle, so as to buffer and guide the pipe to fall into the receiving frame 800. The receiving frame 800 can be lined with flexible materials such as sponge or rubber to further buffer and protect the falling pipe.

[0024] like Figure 4 and Figure 5As shown, the bearing support seat 300 is located on the top of the processing table 100 near the machine frame 200, and a positioning sleeve 301 is installed through its top. A rotating mechanism is provided between the positioning sleeve 301 and the bearing support seat 300, and the positioning sleeve 301 is driven to rotate by the rotating mechanism. In one specific embodiment of the present invention, the rotating mechanism includes: a gear ring 3001 disposed at one end of a positioning sleeve 301; a transmission shaft 3003 movably connected to the side wall of a bearing support 300 via a bearing, and a gear 3002 meshing with the gear ring 3001 fixed at one end; and a first drive motor 3004, with a synchronous pulley 3005 disposed at both its output end and one end of the transmission shaft 3003, and a synchronous belt 3006 sleeved between the two synchronous pulleys 3005. By starting the first drive motor 3004, the transmission shaft 3003 can be synchronously driven to rotate under the transmission of the synchronous pulleys 3005 and the synchronous belt 3006. Then, the transmission shaft 3003 drives the meshing gear ring 3001 to rotate via the gear 3002, causing the gear ring 3001 to drive the positioning sleeve 301 to rotate on the bearing support 300.

[0025] like Figures 3-7 As shown, the positioning unit includes fixed seats 400 symmetrically arranged at both ends of the positioning sleeve 301. A liftable top frame 402 is provided at the middle of the top side of the fixed seat 400, and rotatable connecting parts 404 are symmetrically arranged at both ends of its top side. A first clamping post 401 is provided at the top of the top frame 402, and a second clamping post 403 is provided at the top of the connecting part 404. A transmission assembly is provided between the bottom ends of the top frame 402 and the connecting part 404 to drive the first clamping post 401 and the second clamping post 403 to move synchronously to clamp the positioning tube. The connector 404 includes a connecting shaft 4041, an upper arc arm 4042, and a lower arc plate 4043. The connecting shaft 4041 is movably connected to the top of the fixed base 400 via a bearing, and its top side is connected to the upper arc arm 4042, and its bottom side is connected to the lower arc plate 4043. The upper arc arm 4042 is located outside the fixed base 400, and the lower arc plate 4043 is located inside the fixed base 400.

[0026] The positioning center formed by the first clamping post 401 and the two second clamping posts 403 is on the same central axis as the center of the positioning sleeve 301. Since the automotive pipe is clamped and positioned by the first clamping post 401 and the two second clamping posts 403, its center is always on the positioning center formed by the clamping post 401, thus maintaining its position on the same central axis as the center of the positioning sleeve 301, so that it can rotate around its own central axis.

[0027] In this embodiment, the transmission assembly includes: a push plate 405, which is disposed within a fixed base 400, and has symmetrically arranged protrusions 4051 at both ends, with the two protrusions 4051 slidingly engaging with the arc surfaces of the two lower arc plates 4043 respectively; a threaded cylinder 4052, whose top end is fixedly connected to a top frame 402 and whose bottom end is fixedly connected to the push plate 405; a second drive motor 4054 is disposed on the bottom side of the fixed base 400, the output end of the second drive motor 4054 extends into the fixed base 400 and is connected to a threaded post 4053, the top end of the threaded post 4053 is screwed into the threaded cylinder 4052; by starting the second drive motor 4054, the second drive motor 4054 drives the threaded post 4053 to rotate, the threaded post 4053 drives the threaded cylinder 4052 to move, and the threaded cylinder 4052 drives the push plate 405 to rise and fall, so that the protrusions 4051 on the push plate 405 can slide and engage with the arc surfaces of the lower arc plates 4043.

[0028] Several springs 406 are symmetrically arranged at both ends of the top side inside the fixed base 400, and the bottom end of the springs 406 is connected to the lower arc plate 4043.

[0029] Initially, the first clamping post 401 is at the lowest point of its stroke, and the second clamping posts 403 on both sides open outward to their maximum opening. At this time, the protrusions 4051 at both ends of the push plate 405 abut against the bottom of the lower arc plate 4043. The spring 406 is set to a pre-compressed state, and its elasticity always maintains the tight fit between the protrusions 4051 and the lower arc plate 4043. The automotive pipe is passed through the positioning sleeve 301 and placed between the first clamping column 401 and the second clamping column 403 of the two positioning units. The push plate 405 is driven to rise. The push plate 405 drives the first clamping column 401 to rise synchronously through the top frame 402. At the same time, the protrusions 4051 at both ends of the push plate 405 slide along the arc surface of the lower arc plate 4043. The lower arc plate 4043 compresses the spring 406 to further contract. The lower arc plate 4043 drives the upper arc arm 4042 to rotate and swing through the connecting shaft 4041. The upper arc arm 4042 drives the second clamping column 403 to rotate inward and abut against the side wall of the pipe. This achieves the synchronous action of the first clamping column 401 and the two second clamping columns 403 to clamp and position the pipe. It also ensures that the center of the pipe and the center of the positioning sleeve 301 are on the same central axis. Thus, it can adapt to automotive pipes with various outer diameter specifications within the preset adjustment range, and achieve quick centering and clamping. It is not only convenient and efficient, but also accurate and stable in positioning. After the pipe is positioned by the positioning units at both ends of the positioning sleeve 301, the rotating mechanism can be started. The rotating mechanism drives the positioning sleeve 301 to rotate on the bearing support seat 300. The positioning sleeve 301 can drive the pipe to rotate around its own central axis through the positioning unit. In conjunction with the action of the laser cutter 201 above, it can adapt to two cutting modes to complete the cutting process of automotive pipes, thereby effectively improving the situation of incomplete cutting and skewed cuts of automotive pipes, and greatly improving the flatness and roundness accuracy of the cut.

[0030] like Figures 3-5 , Figure 8 and Figure 9 As shown, the feeding unit is mounted on the bearing support 300 and is used to drive the pipe to move axially within the bearing support 300.

[0031] In one specific embodiment of the present invention, the feeding unit includes: a support platform 500, which is disposed at the inner bottom end of the positioning sleeve 301 and located between two fixed seats 400. The top end of the support platform 500 is provided with a V-groove, and multiple sets of rotatable guide wheels 501 are embedded in the inner side of the V-groove; a column 600, which is disposed at the top end of the bearing support seat 300, and a second cylinder 601 is disposed at the top end of the column. A fixed frame 602 is disposed at the bottom end of the second cylinder 601. The bottom end of the fixed frame 602 is symmetrically connected to two pressure rollers 604 facing the central axis of the positioning sleeve 301 through a rotating shaft. A third drive motor 603 is disposed on one side of the fixed frame 602, and the output end of the third drive motor 603 is connected to the pressure rollers 604. When it is necessary to adjust the cutting point of the automotive pipe fitting, the positioning unit can be controlled to open and release the pipe fitting (at this time, the support platform 500 needs to be controlled to rotate to the bottom of the positioning sleeve 301). After release, the pipe fitting can fall on the V-groove on the support platform 500. The first clamping post 401 on the positioning unit retracts and descends to below the bottom of the V-groove, forming a clearance space so as not to interfere with the pipe fitting being placed smoothly inside the V-groove. Then, the second cylinder 601 drives the fixing frame 602 to descend, causing the fixing frame 602 to drive the two symmetrical pressure rollers 604 to descend and abut. On the top side of the pipe fitting, the pressure roller 604 is driven to rotate by the third drive motor 603. Since the bottom side of the pipe fitting is supported by the guide roller 501 arranged in the V-groove, the pressure roller 604 can smoothly drive the pipe fitting to move back and forth axially in the V-groove by friction. This allows for quick and accurate control of the cutting point of the pipe fitting relative to the laser cutter 201. After the cutting point is adjusted to the correct position, the positioning unit can be controlled to quickly retract to re-center and clamp the pipe fitting. The cutting position adjustment is convenient and efficient, which greatly improves the continuous cutting processing efficiency of automotive pipe fittings.

[0032] In another specific embodiment of the present invention, for automotive pipes with small diameter and thin wall thickness, when the pipe falls into the V-groove on the support platform 500, the pressure roller 604 presses down on the pipe and drives it to move laterally. At this time, the laser cutter 201 can work synchronously to dynamically cut the pipe during the movement, thereby processing an inclined bevel at the end of the pipe to achieve integrated bevel forming of the pipe, further increasing the processing function of the device and greatly improving the versatility of the device.

[0033] The bottom of the V-groove is located above the top surface of the fixing base 400. The first clamping post 401 retracts into the fixing base 400 so that the pipe fitting can fall into the V-groove, thereby preventing the first clamping post 401 from affecting the placement of the pipe fitting on the support platform 500.

[0034] It is worth noting that the forward and backward feeding distance of the pipe fitting, the lifting height of the laser cutter 201, and the clamping distance of the first clamping column 401 and the second clamping column 403 in this application can all be controlled by sensors for real-time detection and precise adjustment. These are not shown in the figure and are all conventional technical means in this field, so they will not be described in detail.

[0035] Working principle and process: During operation, the automotive pipe can be passed through the positioning sleeve 301 and placed between the first clamping column 401 and the second clamping column 403 of the two positioning units. The push plate 405 drives the first clamping column 401 to rise through the top frame 402. At the same time, the push plate 405 synchronously drives the connecting parts 404 at both ends to rotate and swing, causing the second clamping column 403 to rotate inward and abut against the side wall of the pipe. The first clamping column 401 and the two second clamping columns 403 move synchronously to clamp the positioning pipe and ensure that the center of the pipe and the center of the positioning sleeve 301 are on the same central axis. By starting the rotation mechanism, the rotation mechanism drives the positioning sleeve 301 to rotate on the bearing support seat 300. The positioning sleeve 301 can drive the pipe to rotate around its own central axis through the positioning unit. In conjunction with the action of the laser cutter 201 above, it can adapt to two cutting modes to complete the automotive pipe cutting. In the cutting and processing of the tube fitting, the positioning unit can be controlled to open and release the tube fitting, so that the tube fitting falls into the V-groove on the support platform 500. The first clamping column 401 retracts and descends to the bottom of the V-groove, forming a clearance space. Then, the second cylinder 601 drives the fixing frame 602 to descend, so that the fixing frame 602 drives the two sets of symmetrical pressure rollers 604 to descend and abut against the top side of the tube fitting. The third drive motor 603 drives the pressure rollers 604 to rotate. The bottom side of the tube fitting is supported by the guide rollers 501 arranged in the V-groove to form rolling support. The pressure rollers 604 rely on friction to drive the tube fitting to move smoothly back and forth axially in the V-groove, so as to quickly and accurately control the cutting point of the tube fitting relative to the laser cutter 201. After the cutting point is adjusted to the correct position, the positioning unit is controlled to quickly retract and center and clamp the tube fitting again to continue the cutting operation.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser tube cutting machine for processing automotive parts, characterized in that, include: Processing table (100); A frame (200) is disposed on top of the processing table (100) and a movable laser cutter (201) is mounted thereon for cutting pipes; A bearing support (300) is provided on the top of the processing table (100) near the machine frame (200), and a positioning sleeve (301) is installed through the top of the bearing support (300). A rotating mechanism is provided between the positioning sleeve (301) and the bearing support (300), and the positioning sleeve (301) is driven to rotate by the rotating mechanism. The positioning unit includes fixed seats (400) symmetrically arranged at both ends of the positioning sleeve (301). A liftable top frame (402) is provided at the middle of the top side of the fixed seat (400), and rotatable connecting parts (404) are symmetrically arranged at both ends of its top side. A first clamping column (401) is provided at the top of the top frame (402), and a second clamping column (403) is provided at the top of the connecting part (404). A transmission assembly is provided between the bottom ends of the top frame (402) and the connecting part (404) for driving the first clamping column (401) and the second clamping column (403) to move synchronously to clamp the positioning tube. The feeding unit is disposed on the bearing support (300) and is used to drive the tube to move axially within the bearing support (300).

2. The laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The connector (404) includes a connecting shaft (4041), an upper arc arm (4042), and a lower arc plate (4043). The connecting shaft (4041) is movably connected to the top of the fixed seat (400) via a bearing, and its top side is connected to the upper arc arm (4042), and its bottom side is connected to the lower arc plate (4043). The upper arc arm (4042) is located outside the fixed seat (400), and the lower arc plate (4043) is located inside the fixed seat (400).

3. The laser tube cutting machine for processing automotive parts according to claim 2, characterized in that, The transmission assembly includes: Push plate (405) is set in the fixed base (400) and has symmetrical protrusions (4051) at both ends. The two protrusions (4051) slide and fit against the arc surfaces of the two lower arc plates (4043) respectively. The threaded cylinder (4052) has its top end fixedly connected to the top frame (402) and its bottom end fixedly connected to the push plate (405). A second drive motor (4054) is provided on the bottom side of the fixed seat (400). The output end of the second drive motor (4054) extends into the fixed seat (400) and is connected to a threaded column (4053). The top end of the threaded column (4053) is screwed into the threaded cylinder (4052).

4. The laser tube cutting machine for processing automotive parts according to claim 2, characterized in that, Several springs (406) are symmetrically arranged at both ends of the top side inside the fixed base (400), and the bottom end of the springs (406) is connected to the lower arc plate (4043).

5. A laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The positioning center formed by the first clamping post (401) and the two second clamping posts (403) is on the same central axis as the center of the positioning sleeve (301).

6. A laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The rotating mechanism includes: A toothed ring (3001) is disposed at one end of the positioning sleeve (301); The drive shaft (3003) is movably connected to the side wall of the bearing support (300) via a bearing, and one end of the drive shaft is fixed with a gear (3002) that meshes with the gear ring (3001). The first drive motor (3004) has a synchronous pulley (3005) at its output end and at one end of the transmission shaft (3003), and a synchronous belt (3006) is sleeved between the two synchronous pulleys (3005).

7. A laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The feeding unit includes: A support platform (500) is provided at the bottom inner side of the positioning sleeve (301) and between two fixed seats (400). The top of the support platform (500) is provided with a V-shaped groove, and multiple sets of rotatable guide wheels (501) are embedded in the inner side of the V-shaped groove. A column (600) is located at the top of the bearing support seat (300), and a second cylinder (601) is located at the top of the column. A fixing frame (602) is located at the bottom of the second cylinder (601). Two pressure rollers (604) facing the central axis of the positioning sleeve (301) are symmetrically connected to the bottom of the fixing frame (602) via a rotating shaft. A third drive motor (603) is located on one side of the fixing frame (602), and the output end of the third drive motor (603) is connected to the pressure roller (604).

8. A laser tube cutting machine for processing automotive parts according to claim 7, characterized in that, The bottom of the V-groove is located above the top surface of the fixed base (400).

9. A laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The top of the frame (200) is provided with a linear guide rail (204), and the bottom side of the linear guide rail (204) is slidably connected with a mounting base (202). The top of the mounting base (202) is provided with a first cylinder (203), and the output end of the first cylinder (203) is connected to the laser cutter (201) through a bracket.

10. A laser tube cutting machine for processing automotive parts according to claim 1, characterized in that, The top of the processing table (100) is located below the laser cutter (201) and is fixedly connected to a guide (700) via a bracket. The bottom end of the guide (700) is connected to a receiving frame (800). The guide (700) includes a frame (701) and a plurality of rollers (702). The frame (701) is inclined, and the plurality of rollers (702) are arranged in the frame (701) by a rotating shaft array.

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