Laser cutting equipment for electric vehicle frame production

Abstract

The invention relates to the technical field of electric vehicle frame production, in particular to laser cutting equipment for electric vehicle frame production, which comprises a machine table, a pushing mechanism, a laser cutting machine and a discharging mechanism, according to the laser cutting equipment for electric vehicle frame production, by arranging the discharging mechanism, an inner supporting rod is driven to reciprocate, relative friction motion is formed between a bag body abrasive paper layer and a cutting area, high-temperature molten slag generated in the cutting process is removed in real time, and the situation that the high-temperature molten slag is condensed and solidified on the inner wall of a pipe fitting to form hard hanging slag is prevented; meanwhile, finishing machining is carried out on the cutting seam, and the surface roughness is controlled within Ra3.2 microns; in addition, a slag blocking area can be constructed through the annular sealing effect of the bag body, and splashing and diffusion of slag in the inner cavity of the pipe fitting are effectively restrained.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle frame manufacturing technology, and more specifically to a laser cutting device for electric vehicle frame manufacturing. Background Technology

[0002] As global transportation shifts towards low-carbon and electric modes of transport, electric vehicles (including electric bicycles, electric motorcycles, and low-speed electric vehicles) have become core tools for short-distance travel and urban logistics.

[0003] As the core structural component that supports the power system, battery pack, and rider, the performance of the electric vehicle frame directly determines the vehicle's safety, range, and lifespan. Traditional frame manufacturing primarily involves welding steel tubes, followed by forming and assembly through processes such as stamping and bending.

[0004] Patent application CN202411403129.7 discloses a laser cutting device for electric vehicle frame production, comprising: an operation box, the top of which is fixedly connected to a cover; the laser cutting device for electric vehicle frame production further comprises: a laser cutting machine, the outer wall of which is fixedly connected to the inner wall of the cover; and a collection mechanism, which is used to collect the cut frame tubes and remove the fragments cut from the inside of the cut frame tubes. The outer wall of the collection mechanism is fixedly connected to the inner wall of the operation box. This invention, by setting up a laser cutting machine, blocks the area around the frame tubes to prevent sparks and spatter from splashing and contaminating the inside of the box. During the cutting process, the frame tubes rotate continuously, and the clamping assembly supports the end of the frame tubes away from the laser head to prevent the frame tubes from shaking during cutting, resulting in uneven cut edges.

[0005] During the laser cutting process of electric vehicle frame tubing, due to the hollow structure of the tubing and the characteristics of laser melting, the high-temperature slag generated during cutting is easily deposited on the inner wall of the tubing under the influence of airflow disturbance and gravity. After rapid cooling, it forms a hard slag with a hardness of HRC45-50, which causes great trouble for subsequent inner wall cleaning. This patent cleans the slag on the inner wall of the tubing by vibration, but it is difficult to remove the slag adhering to the inner wall. This increases the probability of porosity defects caused by slag inclusions in subsequent welding processes by 15%-20%, which seriously affects the structural strength and fatigue life of the frame.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0007] The purpose of this invention is to provide a laser cutting device for electric vehicle frame production that can effectively solve the above-mentioned technical problems.

[0008] To achieve the objectives of this invention, the following technical solution is adopted:

[0009] A laser cutting device for producing electric vehicle frames includes: a machine base, a pushing mechanism arranged sequentially on the machine base along the pipe conveying direction, a laser cutting machine mounted on the machine base, and a material unloading mechanism.

[0010] The feeding mechanism includes: a drive motor fixedly mounted on the machine base; a drive disk coaxially fixedly mounted on the output shaft of the drive motor; a hinge rod 1 hinged to the drive disk; a hinge rod 2 hinged to the hinge rod 1; a dust cover hinged to the hinge rod 1; the dust cover is slidably mounted on the machine base; an abutment rod hinged to the machine base; a guide chute hinged to the abutment rod; a limiting block for limiting the guide chute; and a reset spring 1 connecting the abutment rod to the machine base and used for resetting; wherein the abutment rod is located on the rotation path of the second hinge rod.

[0011] Furthermore, the dust cover is also equipped with a clamping assembly;

[0012] The clamping assembly includes: a mounting plate fixedly installed on the inner wall of the dust cover; a rotating plate rotatably installed on the mounting plate; a sliding groove formed on the rotating plate; two sets of clamping blocks symmetrically slidably installed in the sliding groove; three hinge rods respectively hinged to the corresponding clamping blocks; a push plate hinged together with the two sets of hinge rods; a cylinder with a piston rod connected to the push plate and fixed on the mounting plate; and a rotating assembly for driving the rotating plate to rotate.

[0013] Furthermore, the rotating assembly includes: a gear ring sleeved on the outside of the rotating plate, a gear meshing with the gear ring, and a second drive motor that drives the gear to rotate; the output shaft of the second motor is fixedly connected to the gear.

[0014] Furthermore, an observation window is provided on the dust cover.

[0015] Furthermore, the dust cover is also equipped with an internal support assembly;

[0016] The inner support assembly includes: a sliding sleeve fixedly installed inside the dust cover, an inner support rod slidably installed inside the sliding sleeve, a bladder sleeved at one end of the inner support rod, and a filling assembly for injecting coolant into the bladder.

[0017] Furthermore, the liquid filling assembly includes: a liquid storage bladder fixedly installed on the rotating plate, a stop plate slidably installed on the inner support rod, and a second spring elastically installed between the stop plate and the liquid storage bladder; the liquid storage bladder is connected to the bladder body through a flexible tube.

[0018] Furthermore, the capsule is a ring structure and is wrapped around the outer periphery of the inner support rod, with two sets spaced apart along the axial direction of the inner support rod; the two sets of capsules are connected by a pipeline.

[0019] Furthermore, the inner support rod is also provided with a reciprocating guide groove, and the inner support rod passes through the rotating plate; the rotating plate is provided with ball bearings, and the rotating plate is slidably installed in the reciprocating guide groove through the ball bearings; the bladder body is provided with sandpaper.

[0020] Furthermore, one end of the inner support rod is provided with a limiting groove, and a limiting protrusion is provided inside the sliding sleeve, the limiting protrusion being slidably installed in the groove.

[0021] Furthermore, the pushing mechanism includes: a pushing platform that pushes the tube to move downwards from the laser cutting machine, a three-jaw chuck on the pushing platform, and a linear module that drives the pushing platform to move along the machine platform.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention discloses a laser cutting device for electric vehicle frame production. By setting up a feeding mechanism, the device drives the inner support rod to reciprocate. The sandpaper layer of the capsule forms a relative frictional motion with the cutting area, which removes the high-temperature molten slag generated during the cutting process in real time, preventing it from solidifying and forming hard slag on the inner wall of the tube. At the same time, the cutting seam is smoothed, and the surface roughness is controlled within Ra3.2μm. Furthermore, the molten slag barrier zone is constructed through the annular sealing effect of the capsule, which effectively inhibits the splashing and diffusion of molten slag in the inner cavity of the tube. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0025] Figure 1 This is a schematic diagram of the structure of a laser cutting equipment for producing electric vehicle frames according to the present invention;

[0026] Figure 2 This is a schematic diagram of the feeding mechanism in this invention;

[0027] Figure 3 This is a cross-sectional view of the feeding mechanism in this invention;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure of part A;

[0029] Figure 5 This is a schematic diagram of the clamping component in the present invention;

[0030] Figure 6 This is a front view of the clamping component in this invention;

[0031] Figure 7 This is a cross-sectional view of the internal support component in this invention;

[0032] Figure 8 This is a schematic diagram of the internal support rod in this invention;

[0033] Figure 9 This is a side view of a laser cutting device for producing electric vehicle frames according to the present invention.

[0034] In the diagram: 6. Pipe fitting; 1. Machine base; 2. Pushing mechanism; 3. Laser cutting machine; 4. Unloading mechanism; 41. Drive motor one; 42. Drive disk; 43. Hinge rod one; 44. Hinge rod two; 40. Dust cover; 45. Abutment rod; 46. Guide chute; 47. Limiting block; 48. Return spring; 49. Clamping assembly; 491. Mounting plate; 492. Rotating plate; 493. Sliding groove; 494. Clamping block; 495. Hinge rod three; 496. Push plate ; 497, Cylinder; 4981, Gear Ring; 4982, Gear; 4983, Drive Motor II; 5, Observation Window; 4511, Sliding Sleeve; 4512, Inner Support Rod; 4513, Bag Body; 45141, Liquid Storage Bag; 45142, Support Plate; 45143, Spring II; 45144, Hose; 45121, Reciprocating Guide Groove; 45122, Sandpaper; 51, Limit Groove; 21, Pushing Table; 22, Three-Jaw Chuck; 23, Linear Module. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0036] In the description of this invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0037] like Figures 1 to 9As shown, the present invention provides a laser cutting equipment for the production of electric vehicle frames, comprising: a machine base 1, a pushing mechanism 2 arranged sequentially on the machine base 1 in the conveying direction of the pipe fitting 6, a laser cutting machine 3 mounted on the machine base 1, and a material unloading mechanism 4.

[0038] The pushing mechanism 2 includes: a pushing platform 21 that pushes the tube 6 to move downwards from the laser cutting machine 3, a three-jaw chuck 22 mounted on the pushing platform 21, and a linear module 23 that drives the pushing platform 21 to move along the machine table 1.

[0039] In the pipe fitting 6 loading and cutting process, the operator first clamps one end of the pipe fitting 6 to be processed onto the three-jaw chuck 22 equipped on the push table 21. This three-jaw chuck 22 adopts a classic radial synchronous clamping structure, which is a mature clamping method widely used in the industry. Given that it is an existing mature technology, it will not be described in detail here. Subsequently, relying on the linear motion drive function of the linear module 23, the push table 21 carries the pipe fitting 6 smoothly along the preset path towards the laser cutting machine 3, thereby completing the reliable fixing and precise conveying of the pipe fitting 6.

[0040] The feeding mechanism 4 includes: a drive motor 41 fixedly mounted on the machine base 1; a drive disk 42 coaxially fixedly mounted on the output shaft of the drive motor 41; a hinge rod 43 hinged to the drive disk 42; a hinge rod 44 hinged to the hinge rod 43; and a dust cover 40 hinged to the hinge rod 43. The dust cover 40 is slidably mounted on the machine base 1. An abutment rod 45 hinged to the machine base 1; a guide groove 46 hinged to the abutment rod 45; a limiting block 47 limiting the guide groove 46; and a return spring 48 connecting the abutment rod 45 to the machine base 1 and used for resetting. The abutment rod 45 is located on the rotation path of the second hinge rod.

[0041] During the cutting operation of the laser cutting machine 3 on the pipe fittings 6, the drive motor starts and outputs rotational power, driving the drive disk 42 connected to it to perform a fixed-axis rotational motion. When the drive disk 42 rotates, it synchronously drives the hinge rod 1 43 and hinge rod 2 44, which are hinged to its end face, to perform a circular motion around the axis of the drive disk 42. It should be noted that the hinge rod 1 43 and hinge rod 2 44 are respectively located at two opposite radial endpoints on the same end face of the drive disk 42 (their structural relationship is as follows). Figure 3 Show).

[0042] Driven by the rotation of the drive disc 42, the hinge rod 43 generates a linear displacement component along the cutting direction, which in turn pushes the dust cover 40 connected to it to move towards the cutting area, thereby effectively shielding and protecting the cutting point, preventing molten metal slag from splashing during the cutting process, preventing the work surface from being contaminated, and preventing safety hazards such as burns to the operator.

[0043] Meanwhile, hinge rod 44, driven by drive disc 42, undergoes linear displacement away from the cutting direction. It should be noted that the abutment rod 45 is pre-positioned on the rotation path of hinge rod 44 (specific structure as shown in...). Figure 3 As shown, when the second hinge rod 44 rotates to a specific position, it will contact the abutment rod 45 and apply a pushing force, driving the abutment rod 45 to swing around its hinge point with the machine base 1. The swinging motion of the abutment rod 45 is synchronously transmitted to the guide chute 46, driving the guide chute 46 to reciprocate linearly along the preset guide rail. Here, the guide chute 46 is limited by the limiting block 47, so that it can freely extend and retract below the pipe 6 according to the cutting operation requirements. When the second hinge rod 44 rotates in the opposite direction with the drive disc 42, the return spring 48 drives the abutment rod 45 to return to its original position.

[0044] The dynamic adjustment function of the guide chute 46 serves a dual purpose: firstly, after the pipe fitting 6 is cut, the guide chute 46 moves promptly to directly beneath the pipe fitting 6 to receive it, preventing thermal deformation of the high-temperature pipe fitting 6 at the cut due to free fall; secondly, during the cutting operation, the guide chute 46 can actively retreat below the cutting area to prevent molten slag from adhering and accumulating, thus ensuring the smooth feeding of subsequent pipe fittings 6. Furthermore, a molten slag collection chamber is specially installed below the laser cutting machine 3 to centrally collect the molten slag generated during the cutting process, achieving cleanliness of the working environment and resource recycling.

[0045] When the pipe fitting 6 is conveyed to the preset processing station of the laser cutting machine 3 (i.e. directly below the laser cutting head) via the pushing mechanism 2, the drive motor 41 starts and performs forward rotation, and transmits the rotational power to the drive disk 42 through the coupling, driving it to perform fixed-axis rotation around its own axis.

[0046] During the rotation of the drive disk 42, two major functions are achieved simultaneously: First, the rotational motion is converted into linear motion through the linkage mechanism, driving the dust cover 40 to move smoothly along the preset guide rail to the periphery of the cutting area, forming a closed protective space, effectively blocking the high-temperature welding slag splashes generated during laser cutting, ensuring the safety of the working environment and the cleanliness of the equipment; Second, it drives the guide chute 46 to move in the opposite direction, causing it to move away from directly below the cutting area, preventing molten slag from falling directly onto the surface of the guide chute 46, and preventing quality problems such as pipe fitting 6 being stuck or surface scratched due to molten slag adhesion.

[0047] After the tube 6 has completed laser cutting, the drive motor 41 rotates in the reverse direction, and the drive disk 42 rotates in the reverse direction as well. At this time, the mechanical transmission system operates in reverse: the dust cover 40 moves away from the cutting area under the drive of the transmission mechanism and returns to its initial position; simultaneously, the guide chute 46 moves precisely to directly below the cut tube 6 under the reverse transmission, forming a guide channel for the tube 6 to fall. The high-temperature tube 6 falls freely along the guide chute 46 under the action of gravity, completing the safe and orderly unloading operation. The entire process achieves dynamic switching between dust protection and guide functions through the forward and reverse rotation control of the motor, ensuring the efficiency and reliability of the laser cutting operation.

[0048] The dust cover 40 is also provided with a clamping component 49;

[0049] The clamping assembly 49 includes: a mounting plate 491 fixedly installed on the inner wall of the dust cover 40; a rotating plate 492 rotatably installed on the mounting plate 491; a sliding groove 493 formed on the rotating plate 492; two sets of clamping blocks 494 symmetrically slidably installed in the sliding grooves 493; hinge rods 495 respectively hinged to the corresponding clamping blocks 494; a push plate 496 hinged together with the two sets of hinge rods 495; a cylinder 497 with a piston rod connected to the push plate 496 and fixed on the mounting plate 491; and a rotating assembly for driving the rotating plate 492 to rotate.

[0050] When the dust cover 40 moves directionally along the guide mechanism towards the cutting area of ​​the laser cutting machine 3 under the drive of the transmission system, the drive cylinder 497 starts synchronously, and its piston rod performs an axial retraction action. This linear retraction motion is converted into a rotation-translation composite motion through the lever transmission mechanism of the double hinged rods 495 (symmetrically arranged on both sides of the cylinder 497), driving the two sets of symmetrically arranged clamping blocks 494 to move synchronously radially towards each other along the sliding groove 493 until a stable clamping contact is formed with the outer wall of the pipe 6.

[0051] The two sets of clamping blocks 494 are moved in perfect synchronization by a single power source of cylinder 497, which effectively eliminates the radial offset of the pipe 6 caused by unilateral force. The symmetrical lever transmission structure ensures that the clamping force is evenly distributed, so that the axis of the pipe 6 is highly coaxial with the cutting laser beam, thereby minimizing the quality problems such as the tilting of the cutting surface and the excessive roughness of the cross-section caused by mechanical vibration or uneven force during the cutting process, and significantly improving the dimensional accuracy and surface quality of the laser cutting of the pipe 6.

[0052] The rotating assembly includes: a gear ring 4981 sleeved on the outside of the rotating plate 492, a gear 4982 meshing with the gear ring 4981, and a second drive motor 4983 that drives the gear 4982 to rotate; the output shaft of the second motor is fixedly connected to the gear 4982.

[0053] When the pipe fitting 6 needs to undergo rotary cutting, the second drive motor 4983 is started. This motor transmits rotational power to the drive gear 4982 through a rigid coupling, driving it to rotate around its fixed axis. The drive gear 4982 and the driven gear 4982 form an external meshing transmission pair, transmitting motion to the rotating plate 492 through precise tooth profile meshing, driving it to rotate at a uniform speed around its own axis. The pipe fitting 6 to be cut is rigidly fixed to the working surface of the rotating plate 492 by a clamp, rotating synchronously with the rotating plate 492, enabling the laser cutting head to achieve continuous trajectory cutting along the circumference of the pipe fitting 6, meeting the processing requirements of complex curved surfaces or annular cuts.

[0054] In addition, the dust cover 40 is made of high-strength transparent protective material, with an observation window 5 at the front. This window is equipped with anti-sparking protective glass and an adjustable angle shading plate. Operators can monitor the workpiece status in the cutting area in real time through the observation window, including key parameters such as the molten pool shape, cutting surface quality, and abnormal sparks. Combined with feedback data from the intelligent monitoring system, the cutting process parameters can be adjusted in a timely manner, thereby effectively controlling processing quality fluctuations and improving product qualification rate.

[0055] The dust cover 40 is also provided with an internal support assembly;

[0056] The inner support assembly includes: a sliding sleeve 4511 fixedly installed inside the dust cover 40, an inner support rod 4512 slidably installed inside the sliding sleeve 4511, a bladder 4513 sleeved on one end of the inner support rod 4512, and a filling assembly for injecting coolant into the bladder 4513.

[0057] The liquid filling assembly includes: a liquid storage bladder 45141 fixedly installed on the rotating plate 492, a stop plate 45142 slidably installed on the inner support rod, and a spring 45143 elastically installed between the stop plate 45142 and the liquid storage bladder 45141; the liquid storage bladder 45141 is connected to the bladder body 4513 through a hose 45144.

[0058] The capsule 4513 is a ring structure and is wrapped around the outer periphery of the inner support rod 4512. Two sets are arranged at intervals along the axial direction of the inner support rod 4512. The two sets of capsules 4513 are connected by a pipeline.

[0059] As the dust cover 40 moves toward the laser cutting machine 3, the inner support rod 4512 located at the front end of the dust cover 40 simultaneously enters the inner cavity of the pipe 6 to be processed. When the dust cover 40 moves to the preset end point of the stroke, the area to be cut in the pipe 6 is positioned in the middle section of the two sets of expansion bladders 4513.

[0060] An axially sliding abutment plate 45142 is mounted on the inner support rod 4512. During the approach of the dust cover 40, the end of the pipe 6 comes into mechanical contact with the abutment plate 45142, pushing the abutment plate 45142 to slide directionally along the guide groove of the inner support rod 4512. During the displacement of the abutment plate 45142, the liquid storage bladder 45141 is simultaneously squeezed, and the high-performance coolant pre-filled in the bladder is directionally delivered to the two sets of expansion bladders 4513 through the pressure-resistant hose 45144. As the coolant is continuously injected, the bladder 4513 undergoes controllable expansion deformation until it forms an interference fit with the inner wall of the pipe 6, achieving full-section internal support in the cut area of ​​the pipe 6.

[0061] The double-bladder 4513 support structure has two technical advantages: First, by simultaneously establishing support points on both sides of the cutting seam, the bending moment load generated by the self-weight of the pipe 6 is effectively dispersed, avoiding quality defects such as burrs and collapsed edges caused by local stress concentration at the end of the cutting process; Second, the coolant filled in the bladder 4513 forms a highly efficient thermal resistance barrier, which can significantly reduce the heat conduction effect generated by laser cutting, preventing the pipe 6 from undergoing thermal deformation during subsequent handling due to local overheating, and also preventing the high-temperature surface of the pipe 6 from burning the operators.

[0062] After the cutting operation is completed, the dust cover 40 retracts in the opposite direction from the laser cutting machine 3. At this time, the return spring 48 on the inner support rod 4512 releases its elastic potential energy, and applies a reverse thrust to the pipe 6 through the abutment plate 45142, so that the pipe 6 is automatically separated from the inner support rod 4512, realizing a fast and safe unloading operation.

[0063] The inner support rod 4512 is also provided with a reciprocating guide groove 45121, and the inner support rod 4512 passes through the rotating plate 492; the rotating plate 492 is provided with a ball bearing, and the rotating plate 492 is slidably installed in the reciprocating guide groove 45121 through the ball bearing; the bladder body 4513 is provided with sandpaper 45122.

[0064] When the motor drives the rotating plate 492 to rotate and cut the pipe 6, the inner support rod 4512 moves axially along the guide of the reciprocating guide groove 45121 as the rotating plate 492 rotates. Thus, when the pipe 6 is being rotated and cut, the inner support rod 4512 can move back and forth inside the pipe 6. The capsule 4513, which is supported on both sides of the cutting seam, moves synchronously along both sides of the cutting seam. Since the surface of the capsule 4513 is coated with a layer of silicon carbide abrasive paper 45122 with optimized particle size distribution, the abrasive particle size distribution strictly follows the cutting characteristic curve of the material of the pipe 6. During the reciprocating motion of the inner strut 4512, the sandpaper layer of the capsule 4513 forms a relative frictional motion with the cutting area, achieving three synergistic functions through mechanical scraping: First, it removes the high-temperature molten slag generated during the cutting process in real time, preventing it from solidifying and forming hard slag on the inner wall of the pipe fitting 6; second, it performs a finishing process on the cutting seam, controlling the surface roughness to within Ra3.2μm; third, it constructs a slag barrier zone through the annular sealing effect of the capsule 4513, effectively suppressing the splashing and diffusion of molten slag in the inner cavity of the pipe fitting 6.

[0065] It should be added that one end of the inner support rod 4512 is provided with a limiting groove 51, and a limiting protrusion is provided in the sliding sleeve 4511. The limiting protrusion is slidably installed in the groove, so that the inner support rod 4512 can move along its axial direction when the rotating plate 492 rotates.

[0066] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0067] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A laser cutting device for producing electric vehicle frames, characterized in that, include: The machine base, the pushing mechanism arranged sequentially on the machine base along the pipe conveying direction, the laser cutting machine mounted on the machine base, and the unloading mechanism; The feeding mechanism includes: a drive motor fixedly mounted on the machine base; a drive disk coaxially fixedly mounted on the output shaft of the drive motor; a hinge rod 1 hinged to the drive disk; a hinge rod 2 hinged to the hinge rod 1; a dust cover hinged to the hinge rod 1; the dust cover is slidably mounted on the machine base; an abutment rod hinged to the machine base; a guide chute hinged to the abutment rod; a limiting block for limiting the guide chute; and a reset spring connecting the abutment rod and the machine base for resetting; wherein the abutment rod is located on the rotation path of the second hinge rod.

2. The laser cutting equipment for electric vehicle frame production as described in claim 1, characterized in that, The dust cover is also equipped with a clamping component; The clamping assembly includes: a mounting plate fixedly installed on the inner wall of the dust cover; a rotating plate rotatably installed on the mounting plate; a sliding groove formed on the rotating plate; two sets of clamping blocks symmetrically slidably installed in the sliding groove; three hinge rods respectively hinged to the corresponding clamping blocks; a push plate hinged together with the two sets of hinge rods; a cylinder with a piston rod connected to the push plate and fixed on the mounting plate; and a rotating assembly for driving the rotating plate to rotate.

3. The laser cutting equipment for electric vehicle frame production as described in claim 2, characterized in that, The rotating assembly includes: a gear ring sleeved on the outside of the rotating plate, a gear meshing with the gear ring, and a second drive motor that drives the gear to rotate; the output shaft of the second motor is fixedly connected to the gear.

4. The laser cutting equipment for electric vehicle frame production as described in claim 3, characterized in that, An observation window is provided on the dust cover.

5. The laser cutting equipment for electric vehicle frame production as described in claim 4, characterized in that, The dust cover is also equipped with an internal support assembly; The inner support assembly includes: a sliding sleeve fixedly installed inside the dust cover, an inner support rod slidably installed inside the sliding sleeve, a bladder sleeved at one end of the inner support rod, and a filling assembly for injecting coolant into the bladder.

6. The laser cutting equipment for electric vehicle frame production as described in claim 5, characterized in that, The liquid filling assembly includes: a liquid storage bladder fixedly installed on the rotating plate, a stop plate slidably installed on the inner support rod, and a spring 2 elastically installed between the stop plate and the liquid storage bladder; the liquid storage bladder is connected to the bladder body through a hose.

7. The laser cutting equipment for electric vehicle frame production as described in claim 6, characterized in that, The capsule is a ring structure and is wrapped around the outer circumference of the inner support rod. Two sets of capsules are arranged at intervals along the axial direction of the inner support rod. The two sets of capsules are connected by a pipeline.

8. The laser cutting equipment for electric vehicle frame production as described in claim 7, characterized in that, The inner support rod is also provided with a reciprocating guide groove, and the inner support rod passes through the rotating plate; the rotating plate is provided with ball bearings, and the rotating plate is slidably installed in the reciprocating guide groove through the ball bearings; the bladder body is provided with sandpaper.

9. The laser cutting equipment for electric vehicle frame production as described in claim 8, characterized in that, One end of the inner support rod is provided with a limiting groove, and a limiting protrusion is provided inside the sliding sleeve. The limiting protrusion is slidably installed in the groove.

10. The laser cutting equipment for electric vehicle frame production as described in claim 1, characterized in that, The pushing mechanism includes: a pushing platform that pushes the pipe fittings downwards towards the laser cutting machine, a three-jaw chuck mounted on the pushing platform, and a linear module that drives the pushing platform to move along the machine platform.

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