Automatic feeding mechanism of laser cutting machine

Abstract

The invention relates to the technical field of processing and feeding, and specifically discloses an automatic feeding mechanism for a laser cutting machine, comprising a component bracket, wherein a plurality of first-level preparation transmission components are fixedly connected to the top of the component bracket, and a second-level shelf transmission component is slidably arranged on one side of the first-level preparation transmission component; a PLC end obtains the pipe wall offset distance fed back by an acoustic wave ranging unit, and sends a control signal to an end face correction tail plate in a corresponding area thereof, so that a hydraulic telescopic cylinder pushes a parallel transmission plate to move toward the pipe wall offset surface, at which time the end face correction tail plate corresponding to the pipe wall offset position contacts the pipe wall offset position first, thereby triggering a contact pressure signal, and then the end face correction driving rail moves to the opposite position of the acoustic wave ranging unit that triggers the pressure signal, and is pushed along the bottom of the pipe wall offset position by an electric push rod, so that the pipe contact surface offset at the upper end of a transmission arm quickly fits with a support surface of the transmission arm.

Description

Technical Field

[0001] The invention relates to the technical field of processing and feeding, in particular to an automatic feeding mechanism for a laser cutting machine. Background Art

[0002] Laser cutting machines mainly generate high-power density laser beams, and use the heat generated by the laser beam to melt and vaporize the material, thereby achieving precise cutting. In order to facilitate the one-time delivery of pipe fittings to the pipe cutting clamping end, traditional laser cutting machines mainly set up transmission rollers and lifting arms for feeding operations. After the pipe fittings are transferred to the pipe cutting machine channel through the transmission roller, the lifting arm tilts the pipe fittings forward to the inside of the pipe cutting machine channel, and finally the support claws and propulsion components set inside the pipe cutting machine channel are used to transfer the pipe fittings to the laser direction. However, this type of feeding assembly has the following problems: when the pipe is transmitted to the inner side of the pipe cutting machine channel, it mainly contacts with the surface of the transmission roller. The traditional roller is usually arranged in multiple sections. Therefore, the contact surface of the pipe when it is transmitted to the transmission roller cannot be unified with the contact surface of the transmission roller of each section. Therefore, when the pipe is placed on the upper end of the transmission roller, there is an initial position deviation easily, and it cannot remain parallel to the pipe cutting machine channel. Under the influence of this, the transmission force of the overall longer pipe when it contacts the transmission roller is prone to deviation, and finally it is offset when it is transported to the channel, causing the lifting arm to lift the pipe forward. The pipe cannot keep any fixed plane in contact with the support surface of the lifting arm, resulting in an error in the placement angle during loading. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides an automatic feeding mechanism for a laser cutting machine. The technical solution adopted by the present invention to solve the technical problems is: an automatic feeding mechanism for a laser cutting machine, comprising a component bracket, a plurality of first-level preparatory transmission components are fixedly connected to the top of the component bracket, a second-level shelf transmission component is slidably arranged on one side of the first-level preparatory transmission component, and a lifting edge limiting component, a parallel pipe entry approval component and a front-end insertion angle correction component are installed at one end of the second-level shelf transmission component away from the second-level shelf transmission component;

[0004] The parallel pipe entry approval assembly includes a parallel transmission plate, an acoustic wave ranging unit, an end face correction tail plate and a hydraulic telescopic cylinder, wherein the hydraulic telescopic cylinder is installed at one end of the secondary rack transmission assembly, and the surface wall of the parallel transmission plate is fixedly connected with the end face correction tail plate and two acoustic wave ranging units, and the two acoustic wave ranging units are symmetrically distributed to the upper and lower ends of the end face correction tail plate;

[0005] The front end insertion angle correction component includes a first sliding lock, an end face correction drive rail and a sliding directional card strip, the sliding directional card strip is fixedly connected to one end of the first-level preparatory transmission component, the bottom of the first sliding lock is engaged with the sliding directional card strip, the top of the first sliding lock is fixedly connected to the end face correction drive rail, and a second sliding lock is fixedly connected to one side of the first sliding lock.

[0006] Preferably, the first-stage preparatory transmission component includes a feeding end guide frame, a multi-stage linkage gear group, a transmission motor and a rotary transmission chain. The feeding end guide frame is fixedly connected to the component bracket, the multi-stage linkage gear group is installed on the outer wall of the feeding end guide frame, the rotary transmission chain is arranged on the inner side of the feeding end guide frame, the outer shell of the feeding end guide frame is fixedly connected to the component bracket, and the transmission motor drives the rotary transmission chain for circular transmission through the multi-stage linkage gear group.

[0007] Preferably, a coaxial gear connecting rod is arranged between several of the first-stage preparatory transmission components, the coaxial gear connecting rod passes through the multi-stage linkage gear set and is fixedly connected to the rotating shaft of the multi-stage linkage gear set, the coaxial gear connecting rod is meshingly connected to the rotary transmission chain via gears, and the output end of the transmission motor is meshingly connected to the rotating shaft of the multi-stage linkage gear set via bevel gears.

[0008] Preferably, the rotary transmission chain is fixedly connected with a plurality of width-limiting spacers, and an equal distance is maintained between every two adjacent width-limiting spacers.

[0009] Preferably, the secondary racking transmission assembly includes a pushing cylinder, a directional transmission track and a pipe loading push head, the pushing cylinder and the directional transmission track are both fixedly connected to the outer wall of the feeding end guide frame, the output end of the pushing cylinder is fixedly connected to the pipe loading push head, the pipe loading push head is slidably connected to the pushing cylinder, and the first sliding lock and the hydraulic telescopic cylinder are both fixedly connected to the pipe loading push head.

[0010] Preferably, the edge lifting limiting assembly includes a lifting cylinder, a transmission arm and an L-shaped edge fixing claw. The lifting cylinder is fixedly connected to the inner side of the pipe feeding push head. The output end of the lifting cylinder is provided with a transmission arm. The L-shaped edge fixing claw is fixedly connected between the first sliding lock and the hydraulic telescopic cylinder.

[0011] Preferably, the first sliding lock and the parallel transmission plate are symmetrically distributed, the second sliding lock and the parallel transmission plate are engaged and connected via a linkage slide bar, and an electric push rod is fixedly connected to one side of the end face correction drive rail.

[0012] Preferably, the number of the parallel transmission plates and the number of the acoustic wave ranging units are three, and the three parallel transmission plates are all fixedly connected to the transmission end of the hydraulic telescopic cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. After the pipe is transferred to the pipe cutting machine channel direction by the interval-type first-level preparation transmission assembly, the pipe feeding pusher is driven by the push cylinder to reach the pipe head end position, and then the transmission arm is driven to lift by the lifting cylinder, so that the transmission arm serves as the supporting end to lift the pipe. After that, the push cylinder continues to drive the pipe feeding pusher to bring the pipe in the lifted state to the inside of the pipe cutting machine channel. The sonic ranging unit set at the position of the first-level preparation transmission assembly in each section selects multiple matrix measuring points at each lifting stage of the pipe to verify whether the same spacing is maintained with the parallel transmission plate, and then quickly verifies whether the opposite plane of the sonic ranging unit sensing surface and the sonic ranging unit are offset when the pipe is lifted by the transmission arm.

[0015] 2. After checking that the opposite plane of the sonic ranging unit sensing surface and the sonic ranging unit are offset when the pipe is lifted by the transmission arm, the PLC end obtains the pipe wall offset distance fed back by the sonic ranging unit, and sends a control signal to the end face correction tail plate in the corresponding area, so that the hydraulic telescopic cylinder pushes the parallel transmission plate to move toward the offset surface of the pipe wall. At this time, among the three sets of end face correction tail plates installed on the parallel transmission plate, the end face correction tail plate corresponding to the offset position of the pipe wall will first contact the offset position of the pipe wall, thereby triggering a contact pressure signal, and then the end face correction drive rail moves to the opposite position of the sonic ranging unit that triggers the pressure signal, and the electric push rod is used to push along the bottom of the pipe wall offset position, so that the offset pipe contact surface at the upper end of the transmission arm is quickly fitted with the support surface of the transmission arm, ensuring accurate placement angle during loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 The present invention is a schematic structural diagram of an automatic feeding mechanism for a laser cutting machine.

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0019] Figure 3 The present invention is a schematic structural diagram of a primary preparation transmission component, a secondary shelf transmission component, an edge lifting restriction component and a parallel pipe feeding approval component in an automatic feeding mechanism of a laser cutting machine.

[0020] Figure 4 for Figure 3 Schematic diagram from another perspective.

[0021] Figure 5 for Figure 4 Enlarged view of part B in the middle.

[0022] Figure 6 A side view of a pipe offset state in an automatic feeding mechanism of a laser cutting machine.

[0023] Figure 7 A top view of the offset state of a pipe in an automatic feeding mechanism of a laser cutting machine.

[0024] In the figure: 1. component bracket; 2. primary preparation transmission component; 21. feed end guide frame; 22. multi-stage linkage gear set; 23. transmission motor; 24. rotary transmission chain; 241. width limiting spacer; 25. coaxial gear connecting rod; 3. secondary shelf transmission component; 31. push cylinder; 32. directional transmission track; 33. pipe feeding push head; 4. lifting edge limiting component; 41. lifting cylinder; 42. transmission arm; 43. L-shaped fixed edge claw; 5. parallel pipe entry approval component; 51. parallel transmission plate; 52. sonic ranging unit; 53. end face correction tail plate; 54. hydraulic telescopic cylinder; 55. linkage slide rod; 6. front end insertion angle correction component; 61. first sliding lock; 62. end face correction drive rail; 621. electric push rod; 63. sliding directional card strip; 64. second sliding lock. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] like Figure 1 - Figure 7 As shown, an automatic feeding mechanism of a laser cutting machine described in the present invention includes a component bracket 1, a plurality of first-level preparatory transmission components 2 are fixedly connected to the top of the component bracket 1, a second-level shelf transmission component 3 is slidably arranged on one side of the first-level preparatory transmission component 2, and a lifting edge limiting component 4, a parallel tube feeding approval component 5 and a front-end insertion angle correction component 6 are installed at one end of the second-level shelf transmission component 3 away from the second-level shelf transmission component 3, the first-level preparatory transmission component 2 and the second-level shelf transmission component 3 are used to transport the pipe fittings to the feeding end of the cutting machine, the parallel tube feeding approval component 5 and the front-end insertion angle correction component 6 are used to calibrate the placement reference angle of the pipe fittings to be cut after transmission, so that the contact surface of the pipe fittings can quickly fit with the support surface during feeding, thereby ensuring the accuracy of the placement angle during feeding.

[0027] In this embodiment, the present invention aims to solve the problem that when the existing roller feeding mechanism feeds the pipe into the cutting process, the transmission force of the overall longer pipe is easily deviated when it contacts the transmission roller, and finally it is offset when it is transported to the channel, so that when the lifting arm lifts the pipe forward, the pipe cannot keep any fixed plane in contact with the support surface of the lifting arm, resulting in an error in the placement angle during feeding. In order to solve the above technical problems, the present invention is provided with a lifting edge limiting component 4, a parallel pipe entry verification component 5 and a front end insertion angle correction component 6, which verifies whether the opposite plane of the parallel transmission plate 51 sensing surface and the parallel transmission plate 51 are offset when the pipe is lifted.

[0028] In an optional implementation of the present embodiment, the parallel pipe entry approval assembly 5 includes a parallel transmission plate 51, an acoustic wave ranging unit 52, an end face correction tail plate 53 and a hydraulic telescopic cylinder 54. There are three parallel transmission plates 51 and three acoustic wave ranging units 52. The hydraulic telescopic cylinder 54 is installed at one end of the secondary shelf transmission assembly 3. The three parallel transmission plates 51 are all fixedly connected to the transmission end of the hydraulic telescopic cylinder 54. The surface walls of the parallel transmission plates 51 are fixedly connected with the end face correction tail plate 53 and two acoustic wave ranging units 52. The two acoustic wave ranging units 52 are symmetrically distributed to the upper and lower ends of the end face correction tail plate 53.

[0029] Please refer to the attached drawings in the manual Figure 5In this embodiment, six acoustic wave ranging units 52 are arranged on the surface of the parallel transmission plate 51, and every two acoustic wave ranging units 52 are grouped together, that is, each group of acoustic wave ranging units 52 is symmetrically distributed to the upper and lower ends of the end surface correction tail plate 53, and the three groups of acoustic wave ranging units 52 are distributed in a horizontal array, which is used to select multiple planes when the pipe is lifted by the transmission arm 42, and to determine whether the ranging intervals of multiple detection planes are consistent. The specific principle is that after the current pipe is lifted, the parallel transmission plate 51 is driven by the hydraulic telescopic cylinder 54 to move toward the pipe until the surface of the pipe contacts the end face correction tail plate 53, thereby triggering the start signal of the end face correction tail plate 53, so that the end face correction tail plate 53 controls the sound wave ranging unit 52 to open. After opening, the sound wave ranging unit 52 emits sound waves to measure the distance between the pipe surface and the pipe surface. When the distances measured by the six sound wave ranging units 52 are the same, the pipe and the parallel transmission plate 51 are in the same parallel plane. At this time, a control command is sent to the lifting cylinder 41 through the PLC end, so that the lifting cylinder 41 drives the transmission arm 42 to continue to transmit the pipe to the inside of the pipe cutting machine channel. When the spacing parameters measured by the acoustic distance measuring unit 52 are different, the end face correction drive rail 62 is controlled to drive the electric push rod 621 to move to the position of the acoustic distance measuring unit 52 with the largest deviation in the sensing distance parameter (that is, the group of three groups of acoustic distance measuring units 52 with the smallest distance from the pipe surface). Then, the electric push rod 621 is controlled to push toward the pipeline surface, so that the pipe surface is lifted upward by the pushing action of the electric push rod 621, and a reset space is reserved. Then, the pushing action of the electric push rod 621 is released, so that the pipe slides toward the upper end of the transmission arm 42 again under the action of inertia after the support is released, thereby keeping the bottom surface of the pipe parallel to the support surface of the transmission arm 42.

[0030] In an optional implementation of the present embodiment, the front end insertion angle correction component 6 includes a first sliding lock 61, an end face correction drive rail 62 and a sliding directional card strip 63. The first sliding lock 61 is symmetrically distributed with the parallel transmission plate 51. The sliding directional card strip 63 is fixedly connected to one end of the first-level preparatory transmission component 2. The bottom of the first sliding lock 61 is engaged with the sliding directional card strip 63, and the top of the first sliding lock 61 is fixedly connected with the end face correction drive rail 62. One side of the first sliding lock 61 is fixedly connected with the second sliding lock 64. The second sliding lock 64 is engaged with the parallel transmission plate 51 through a linkage slide rod 55. One side of the end face correction drive rail 62 is fixedly connected with an electric push rod 621.

[0031] In this embodiment, before loading the pipe, first adjust the spacing between the parallel transmission plate 51 and the first sliding lock 61 according to the size of the loaded pipe. The specific debugging method is as follows: control the second sliding lock 64 to release the lock between it and the linkage slide 55, and then drive the first sliding lock 61 to slide to the required spacing position by the end face correction drive rail 62, and control the first sliding lock 61 to lock after sliding, and drive the parallel transmission plate 51 to slide to the required spacing position by the hydraulic telescopic cylinder 54, and control the second sliding lock 64 and the linkage slide 55 to lock to achieve positioning, so that the parallel transmission plate 51 and the first sliding lock 61 can adapt to the size of the pipe to avoid obstruction when the transmission arm 42 lifts the pipe.

[0032] In an optional implementation of the present embodiment, the first-stage preparatory transmission component 2 includes a feeding end guide frame 21, a multi-stage linkage gear set 22, a transmission motor 23 and a rotary transmission chain 24. The feeding end guide frame 21 is fixedly connected to the component bracket 1, the multi-stage linkage gear set 22 is installed on the outer wall of the feeding end guide frame 21, the rotary transmission chain 24 is arranged on the inner side of the feeding end guide frame 21, the outer shell of the feeding end guide frame 21 is fixedly connected to the component bracket 1, and the transmission motor 23 drives the rotary transmission chain 24 for circular transmission through the multi-stage linkage gear set 22.

[0033] In an optional implementation of the present embodiment, a coaxial gear connecting rod 25 is provided between several first-stage preparatory transmission components 2, the coaxial gear connecting rod 25 passes through the multi-stage linkage gear set 22 and is fixedly connected to the rotating shaft of the multi-stage linkage gear set 22, the coaxial gear connecting rod 25 and the rotary transmission chain 24 are meshedly connected via gears, and the output end of the transmission motor 23 and the rotating shaft of the multi-stage linkage gear set 22 are meshedly connected via bevel gears.

[0034] In this embodiment, a bevel gear is arranged on the inner side of the multi-stage linkage gear set 22, the vertical gear is fixedly connected to the rotating shaft of the multi-stage linkage gear set 22, and the transverse gear is connected to the output end of the transmission motor 23. The transverse gear is driven to rotate by the output end of the transmission motor 23 to drive the vertical gear and the rotating shaft of the multi-stage linkage gear set 22 to rotate synchronously, so that the coaxial gear connecting rod 25 is driven by the rotating shaft of the multi-stage linkage gear set 22 to drive the multi-stage linkage gear sets 22 in multiple first-stage preparatory transmission components 2 to move synchronously, and at the same time drive the gear movement between the coaxial gear connecting rod 25 and the rotary transmission chain 24. At this time, the rotary transmission chain 24 circulates to transmit the pipe fittings located at the upper end of the rotary transmission chain 24 toward the inner side of the pipe cutting machine channel.

[0035] In an optional implementation of this embodiment, a plurality of width-limiting spacers 241 are fixedly connected to the rotary transmission chain 24 , and an equal distance is maintained between every two adjacent width-limiting spacers 241 .

[0036] In this embodiment, the width limiting spacer 241 is provided to limit the maximum movable spacing of the pipe during transportation, thereby preventing the pipe from being directly separated along the upper end surface of the rotary transmission chain 24 when being transported by the rotary transmission chain 24 .

[0037] In an optional implementation of the present embodiment, the secondary shelf transmission assembly 3 includes a pushing cylinder 31, a directional transmission rail 32 and a pipe loading pusher 33. The pushing cylinder 31 and the directional transmission rail 32 are both fixedly connected to the outer wall of the feeding end guide frame 21. The output end of the pushing cylinder 31 is fixedly connected to the pipe loading pusher 33. The pipe loading pusher 33 is slidably connected to the pushing cylinder 31. The first sliding lock 61 and the hydraulic telescopic cylinder 54 are both fixedly connected to the pipe loading pusher 33.

[0038] In this embodiment, before the pipe is transported by the rotary transmission chain 24, the pushing cylinder 31 is in a retracted state. At this time, one end of the pipe feeding pusher 33 is close to the position of the multi-stage linkage gear set 22, which can reduce the distance when the pipe is transported to the lifting edge limiting component 4, so that the pipe can quickly reach the lifting position of the lifting edge limiting component 4. After the pipe is lifted by the lifting edge limiting component 4, the pushing cylinder 31 drives the pipe feeding pusher 33 to extend, so that the pipe feeding pusher 33 slides and extends along the limiting path of the directional transmission track 32, and moves to the inner side of the pipe cutting machine channel for transportation.

[0039] In an optional implementation of the present embodiment, the edge lifting limiting assembly 4 includes a lifting cylinder 41, a transmission arm 42 and an L-shaped edge fixing claw 43. The lifting cylinder 41 is fixedly connected to the inner side of the pipe feeding push head 33. The output end of the lifting cylinder 41 is provided with a transmission arm 42. The L-shaped edge fixing claw 43 is fixedly connected between the first sliding lock 61 and the hydraulic telescopic cylinder 54.

[0040] In this embodiment, when the rotary transmission chain 24 drives the pipe to the position of the transmission arm 42, the transmission arm 42 is driven to lift to the half-path distance by the lifting cylinder 41, so that the transmission arm 42 lifts the pipe. After that, the lifting angle can be calibrated by the parallel pipe entry approval component 5 and the front end insertion angle correction component 6, so that the pipe is kept in the same plane with the support surface of the transmission arm 42 before being sent into the pipe cutting machine channel, avoiding the error of the placement angle during loading. After adjustment, the transmission arm 42 is continued to be driven forward and lifted to the inside of the pipe cutting machine channel by the lifting cylinder 41, and then the pipe is clamped by the clamp set on the inside of the pipe cutting machine channel, and the lifting cylinder 41 is controlled to retract the transmission arm 42 to the bottom of the pipe feeding push head 33.

[0041] The working principle of the present invention is as follows: after the pipe is placed on the upper end of the rotary transmission chain 24, the output end of the transmission motor 23 drives the rotary transmission chain 24 to circulate, and the pipe located at the upper end of the rotary transmission chain 24 is transmitted to the inner side of the pipe cutting machine channel, that is, the front end of the pipe feeding pusher 33. After the transmission is reached, the rotary transmission chain 24 drives the pipe to the position of the transmission arm 42, and then the transmission arm 42 is driven to lift to the half-path distance by the lifting cylinder 41, so that the transmission arm 42 can lift the pipe. After lifting, the pipe feeding pusher 33 is extended by the push cylinder 31 to feed the pipe into the inner side of the pipe cutting machine channel. After feeding into the inner side of the pipe cutting machine, the three-point acoustic wave distance measuring unit 52 set at the position of the guide frame 21 of each section feeding end selects multiple matrix measuring points at each lifting stage of the pipe material to verify whether the same distance is maintained with the parallel transmission plate 51, and then quickly verifies whether the opposite plane of the pipe material and the sensing surface of the three-point acoustic wave distance measuring unit 52 and the three-point acoustic wave distance measuring unit are maintained at the same distance when the pipe material is lifted by the transmission arm 42. 52 is offset. After checking whether the opposite plane of the sensing surface of the three-point acoustic wave distance measuring unit 52 is offset from the three-point acoustic wave distance measuring unit 52 when the pipe is lifted by the transmission arm 42, the PLC end obtains the pipe wall offset distance fed back by the three-point acoustic wave distance measuring unit 52, and sends a control signal to the end face correction tail plate 53 in its corresponding area, so that the hydraulic telescopic cylinder 54 pushes the parallel transmission plate 51 to move toward the offset surface of the pipe wall. At this time, the three sets of end face correction tail plates installed on the parallel transmission plate 51 In 53, the end face correction tail plate 53 corresponding to the offset position of the pipe wall surface preferentially contacts the offset position of the pipe wall surface, thereby triggering a contact pressure signal, and then the end face correction driving rail 62 drives the electric push rod 621 to move to the opposite position of the acoustic wave ranging unit 52 that triggers the pressure signal, and the electric push rod 621 is pushed along the bottom of the offset position of the pipe wall surface, so that the offset pipe contact surface at the upper end of the transmission arm 42 is quickly fitted with the support surface of the transmission arm 42, ensuring that the placement angle is accurate during loading.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic feeding mechanism for a laser cutting machine, comprising a component bracket (1), characterized in that: A plurality of first-level preparatory transmission components (2) are fixedly connected to the top of the component bracket (1); a second-level shelf transmission component (3) is slidably arranged on one side of the first-level preparatory transmission component (2); and a lifting edge limiting component (4), a parallel pipe entry approval component (5) and a front-end insertion angle correction component (6) are installed at one end of the second-level shelf transmission component (3) away from the second-level shelf transmission component (3); The parallel pipe entry approval assembly (5) comprises a parallel transmission plate (51), an acoustic wave ranging unit (52), an end face correction tail plate (53) and a hydraulic telescopic cylinder (54), wherein the hydraulic telescopic cylinder (54) is installed at one end of the secondary upper rack transmission assembly (3), and the surface wall of the parallel transmission plate (51) is fixedly connected with the end face correction tail plate (53) and the two acoustic wave ranging units (52), and the two acoustic wave ranging units (52) are symmetrically distributed at the upper and lower ends of the end face correction tail plate (53); The front end insertion angle correction component (6) comprises a first sliding locker (61), an end face correction driving rail (62) and a sliding directional clamping strip (63); the sliding directional clamping strip (63) is fixedly connected to one end of the first-stage preparatory transmission component (2); the bottom of the first sliding locker (61) is engaged with the sliding directional clamping strip (63); the top of the first sliding locker (61) is fixedly connected to the end face correction driving rail (62); and one side of the first sliding locker (61) is fixedly connected to a second sliding locker (64); The first sliding lock (61) and the parallel transmission plate (51) are symmetrically distributed, the second sliding lock (64) and the parallel transmission plate (51) are engaged and connected via a linkage slide bar (55), and an electric push rod (621) is fixedly connected to one side of the end face correction drive rail (62).

2. The automatic feeding mechanism of a laser cutting machine according to claim 1, characterized in that: The first-stage preparatory transmission component (2) comprises a feed end guide frame (21), a multi-stage linkage gear set (22), a transmission motor (23) and a rotary transmission chain (24); the feed end guide frame (21) is fixedly connected to the component bracket (1); the multi-stage linkage gear set (22) is mounted on the outer wall of the feed end guide frame (21); the rotary transmission chain (24) is arranged on the inner side of the feed end guide frame (21); the outer shell of the feed end guide frame (21) is fixedly connected to the component bracket (1); and the transmission motor (23) drives the rotary transmission chain (24) to circulate through the multi-stage linkage gear set (22).

3. The automatic feeding mechanism of a laser cutting machine according to claim 2, characterized in that: A coaxial gear connecting rod (25) is provided between each of the plurality of first-stage preparatory transmission assemblies (2). The coaxial gear connecting rod (25) passes through the multi-stage linkage gear set (22) and is fixedly connected to the rotating shaft of the multi-stage linkage gear set (22). The coaxial gear connecting rod (25) is meshedly connected to the rotary transmission chain (24) via gears, and the output end of the transmission motor (23) is meshedly connected to the rotating shaft of the multi-stage linkage gear set (22) via bevel gears.

4. The automatic feeding mechanism of a laser cutting machine according to claim 3, characterized in that: The rotary transmission chain (24) is fixedly connected to a plurality of width-limiting spacers (241), and an equal distance is maintained between every two adjacent width-limiting spacers (241).

5. The automatic feeding mechanism of a laser cutting machine according to claim 4, characterized in that: The secondary loading and transporting assembly (3) comprises a pushing cylinder (31), a directional transport track (32) and a pipe loading pusher (33); the pushing cylinder (31) and the directional transport track (32) are both fixedly connected to the outer wall of the feeding end guide frame (21); the output end of the pushing cylinder (31) is fixedly connected to the pipe loading pusher (33); the pipe loading pusher (33) is slidably connected to the pushing cylinder (31); and the first sliding locker (61) and the hydraulic telescopic cylinder (54) are both fixedly connected to the pipe loading pusher (33).

6. The automatic feeding mechanism of a laser cutting machine according to claim 5, characterized in that: The edge lifting limiting assembly (4) comprises a lifting cylinder (41), a transmission arm (42) and an L-shaped edge fixing claw (43); the lifting cylinder (41) is fixedly connected to the inner side of the pipe feeding push head (33); the output end of the lifting cylinder (41) is provided with a transmission arm (42); and the L-shaped edge fixing claw (43) is fixedly connected between the first sliding lock (61) and the hydraulic telescopic cylinder (54).

7. The automatic feeding mechanism of a laser cutting machine according to claim 1, characterized in that: The number of the parallel transmission plates (51) and the number of the sonic distance measuring units (52) are both three, and the three parallel transmission plates (51) are all fixedly connected to the transmission end of the hydraulic telescopic cylinder (54).

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