A telescopic platform device for H-beam laser cutting machine

Abstract

The present invention discloses a material channel telescopic platform device for an H-beam laser cutting machine, comprising a feeding mechanism and a feeding mechanism, wherein the feeding mechanism is arranged at one side of the feeding mechanism, and laser cutting heads are respectively arranged at both sides of the feeding mechanism and the feeding mechanism; the feeding mechanism comprises a feeding fixed frame, a telescopic bracket which can be moved laterally is arranged at one side of the feeding fixed frame, an adjusting roller is rotatably arranged on the surface of one side of the telescopic bracket, a first cylinder is arranged at one side inside the feeding fixed frame, one end of a piston rod of the first cylinder is connected to a first fixed seat, and a guiding and positioning structure for cutting the H-beam is arranged on the surface of one side of the telescopic bracket. The present invention can meet different cutting requirements of the H-beam by simultaneously extending and retracting the feeding mechanism and the feeding mechanism, can shorten the minimum discharge length during the groove cutting process, facilitates the cutting of the H-beam, does not cause the position of the incision to move during cutting, and ensures the cutting accuracy of the H-beam.

Description

Technical Field

[0001] The invention relates to laser cutting technology, in particular to a material channel telescopic platform device for an H-beam laser cutting machine. Background Art

[0002] With the increase in the localization rate of laser cutters, laser cutting machines are increasingly used by a wide range of users. In the process of cutting plates with laser cutting machines, the impact of the cutting platform on the loading and unloading time, the utilization rate of the plates, and the collection of cutting dust has gradually become prominent, especially in the processing of H-beams, which require the use of laser cutting machines to cut H-beams, which are generally transported through the loading platform and the H-beams.

[0003] A Chinese patent with announcement number CN220127879U discloses a rolling platform for a laser cutting machine, including a base, side walls are provided on both sides of the base, a transmission channel is provided between the base and the side walls on both sides, a plurality of transmission components are arranged at intervals in the transmission channel along the length direction of the transmission channel, cutting devices are slidably installed on the two side walls, one end face of the base is connected to a driving device, a power supply component is installed on one side of the driving device, and the power supply component is electrically connected to the driving device and the cutting device; the cutting material used by the rolling platform for the laser cutting machine is moved under the drive of the transmission component, is not easy to deform, is easy to replace, and even if it is damaged, it will not affect the use effect, so that the cutting of large-format cutting materials is more precise and the cutting quality is better.

[0004] The above technical solution also has the following shortcomings: the above rolling platform is used during the loading process of large H-beams, especially when beveling the H-beams, that is, beveling at 45° requires a larger space, resulting in the minimum discharge length being too long, making it impossible to load and unload quickly, affecting the cutting efficiency of large H-beams. At the same time, the cutting accessories of large H-beams cannot be positioned during the cutting process, affecting the cutting accuracy. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to provide a telescopic platform device for the material channel of an H-beam laser cutting machine to solve the problem that during the feeding process of large H-beams, the rolling platform, especially when beveling the H-beams, that is, beveling 45° requires a larger space, resulting in a minimum discharge length that is too long, making it impossible to load and unload quickly, affecting the cutting efficiency of large H-beams, and at the same time, the cutting accessories of large H-beams cannot be positioned during the cutting process, affecting the cutting accuracy.

[0006] In order to solve the above technical problems, the present invention provides an H-beam laser cutting machine material channel telescopic platform device, comprising a feeding mechanism and a feeding mechanism, the feeding mechanism is arranged on one side of the feeding mechanism, and laser cutting heads are respectively arranged on both sides of the feeding mechanism and the feeding mechanism; the feeding mechanism comprises a feeding fixed frame, a telescopic bracket that can move laterally is arranged on one side of the feeding fixed frame, a plurality of groups of feeding rollers are rotatably arranged on the upper side of the feeding fixed frame, an adjusting roller is rotatably arranged on the surface of one side of the telescopic bracket, a first cylinder is arranged on one side inside the feeding fixed frame, one end of the piston rod of the first cylinder is connected to a first fixed seat, the first fixed seat is arranged on one side of the bottom of the telescopic bracket, and a guide and positioning structure for cutting the H-beam is arranged on the surface of one side of the telescopic bracket.

[0007] Preferably, a clamping structure for clamping and fixing the H-beam is provided in the telescopic bracket. Through the provision of the clamping structure, the inner surface of the H-beam can be clamped and fixed, thereby improving the stability of the H-beam during feeding.

[0008] Preferably, a first guide rail is arranged on one side of the upper surface of the feed fixing frame, a first slider is slidably arranged on the first guide rail, the first slider is arranged on the two side surfaces of the telescopic bracket, and the movement of the telescopic bracket drives the first slider to slide on the first guide rail, thereby improving the guiding property of the movement of the telescopic bracket.

[0009] Preferably, the guiding and positioning structure includes an auxiliary bracket, which is arranged on one side surface of the telescopic bracket, a horizontal plate is arranged in the auxiliary bracket, a mounting groove is arranged on one side surface of the horizontal plate, a bidirectional screw rod is rotatably arranged in the mounting groove, one end of the bidirectional screw rod is connected to a servo motor located on one side surface of the auxiliary bracket, a first nut and a second nut are symmetrically arranged on both sides of the bidirectional screw rod, a first clamp is arranged on one side surface of the first nut, and a second clamp is arranged on one side surface of the second nut, by rotating the bidirectional screw rod, the spacing between the first clamp and the second clamp can be adjusted at the same time, and during the H-beam cutting process, the cutting position of the H-beam can be auxiliary fixed to improve the accuracy of laser cutting.

[0010] Preferably, an adjustment rod is provided on one side surface of the first clamp and the second clamp, one end of the adjustment rod is slidably set in a support box, the support box is set in the middle of the upper side of the horizontal plate, and an adjustment wedge is provided at one end of the adjustment rod, one end of the adjustment wedge is fitted with a guide structure, and the movement of the adjustment rod can drive the adjustment wedge to move.

[0011] Preferably, the guide structure includes a main wedge block, which is arranged at one end of the longitudinal lifting rod. The main wedge block is fitted with an adjusting wedge block. The longitudinal lifting rod is movably arranged in the middle of the support box. A material guide roller is arranged at one end of the longitudinal lifting rod. The height of the material guide roller can be adjusted by moving the adjusting wedge block, so as to facilitate guiding of the H-shaped steel after cutting.

[0012] Preferably, the feeding mechanism includes a feeding fixed frame, which is arranged on one side of the feed fixed frame, a sliding bracket is arranged on the surface of one side of the feeding fixed frame, and a plurality of groups of feeding rollers are rotatably arranged on the surface of one side of the sliding bracket, and the plurality of groups of feeding rollers are synchronously rotated through a transmission structure.

[0013] Preferably, the transmission structure includes a driving sprocket, which is arranged at one end of the output shaft of the driving motor, the driving motor is arranged on one side surface of the mounting frame, the mounting frame is arranged on one side surface of the sliding bracket, the driving sprocket is connected to the driven double-row sprocket through a chain, the driven double-row sprockets are respectively arranged on one side of multiple groups of feeding rollers, and the driven double-row sprockets are connected in sequence by chains, which can make the multiple groups of feeding rollers rotate synchronously and feed H-shaped steel.

[0014] Preferably, a second cylinder is arranged on one side of the feeding fixed frame, one end of the piston rod of the second cylinder is connected to the second fixed seat, and the second fixed seat is arranged on one side of the bottom of the sliding bracket. The sliding bracket can be driven to move by the extension and retraction of the second cylinder.

[0015] Preferably, a second guide rail is symmetrically arranged on one side surface of the feeding fixed frame, a second slider is slidably arranged on the second guide rail, and the second slider is symmetrically arranged on both sides of the sliding bracket. The sliding itself drives the second slider to slide on the second guide rail, thereby improving the stability of the movement of the sliding bracket.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention can meet different cutting requirements of H-beams by simultaneously extending and retracting the feeding mechanism and the delivery mechanism. During the groove cutting process, the minimum discharge length can be shortened, which facilitates the cutting of H-beams.

[0018] 2. The present invention can assist in clamping and positioning the incision of the H-shaped steel at the cutting position, thereby ensuring the incision position. The incision position will not shift during cutting, thereby ensuring the cutting accuracy of the H-shaped steel. At the same time, it is convenient to guide the H-shaped steel after cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the H-beam during groove cutting in the present invention;

[0020] Figure 2 It is a schematic diagram of the top view of the structure of the H-beam during groove cutting in the present invention;

[0021] Figure 3 This is a schematic diagram of the main structure of the H-shaped steel during straight cutting in the present invention;

[0022] Figure 4 It is a schematic diagram of the top view of the H-shaped steel during straight cutting in the present invention;

[0023] Figure 5 It is a schematic diagram of the overall structure of the feeding mechanism in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the guiding and positioning structure in the present invention;

[0025] Figure 7 It is a schematic diagram of the front cross-sectional structure of the guiding and positioning structure in the present invention;

[0026] Figure 8 It is a schematic structural diagram of the feeding mechanism of the present invention from a first viewing angle;

[0027] Fig. 9 It is a schematic structural diagram of the feeding mechanism of the present invention from a second viewing angle;

[0028] Fig.10 for Figure 8 A partial enlarged structural diagram of the middle A part;

[0029] In the figure: 1, H-beam, 2, feeding mechanism, 3, feeding mechanism, 4, laser cutting head, 201, adjusting roller, 202, clamping structure, 203, first cylinder, 204, feeding roller, 205, feeding fixed frame, 206, first fixed seat, 207, telescopic bracket, 208, first guide rail, 209, first slider, 210, auxiliary bracket, 211, servo motor, 212, first clamp, 213, cross plate, 214, support box, 215, second clamp, 216, guide roller, 21 7. First nut, 218. Mounting groove, 219. Bidirectional screw rod, 220. Second nut, 221. Main wedge, 222. Longitudinal lifting rod, 223. Adjusting wedge, 224. Adjusting rod, 301. Feeding fixed frame, 302. Sliding bracket, 303. Feeding roller, 304. Second cylinder, 305. Chain, 306. Driving motor, 307. Driven double-row sprocket, 308. Second fixed seat, 309. Second guide rail, 310. Second slider, 311. Driving sprocket, 312. Mounting frame. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. All directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] Embodiment 1

[0032] See also Figure 1-Figure 2 The H-beam 1 laser cutting machine material channel telescopic platform device includes a feeding mechanism 2 and a feeding mechanism 3. The feeding mechanism 3 is arranged on one side of the feeding mechanism 2, and laser cutting heads 4 are respectively arranged on both sides of the feeding mechanism 2 and the feeding mechanism 3.

[0033] Figure 1 and Figure 2 This is a schematic diagram of groove cutting. The specification of H-beam 1 in the figure is 1250mm×600mm. When groove cutting, the inner spacing must be 1736mm, and this distance will not affect the laser head cutting. At this time, the material length must meet 3800mm to meet normal cutting.

[0034] Embodiment 2

[0035] See also Figure 3 and Figure 4 It is a schematic diagram of straight cutting of H-beam 1. At this time, the telescopic mechanisms of the feeding mechanism 2 and the feeding branch mechanism are both extended. At this time, only an inner gear spacing of 546mm is required to meet the straight cutting distance. At this time, the material length of 1400mm can meet the cutting.

[0036] Embodiment 3

[0037] See also Figure 5-Figure 7 The H-beam 1 laser cutting machine material channel telescopic platform device includes a feeding mechanism 2 and a feeding mechanism 3. The feeding mechanism 3 is arranged on one side of the feeding mechanism 2, and laser cutting heads 4 are respectively arranged on both sides of the feeding mechanism 2 and the feeding mechanism 3; the feeding mechanism 2 includes a feeding fixed frame 205, and a telescopic bracket 207 that can move laterally is arranged on one side of the feeding fixed frame 205. A plurality of groups of feeding rollers 204 are rotatably arranged on the upper side of the feeding fixed frame 205, and an adjusting roller 201 is rotatably arranged on the surface of one side of the telescopic bracket 207. A first cylinder 203 is arranged on one side of the feeding fixed frame 205, and one end of the piston rod of the first cylinder 203 is connected to a first fixed seat 206. The first fixed seat 206 is arranged on one side of the bottom of the telescopic bracket 207, and a guiding and positioning structure for cutting the H-beam 1 is arranged on the surface of one side of the telescopic bracket 207.

[0038] A first guide rail 208 is arranged on one side of the upper surface of the feed fixed frame 205, and a first slider 209 is slidably arranged on the first guide rail 208. The first slider 209 is arranged on the two side surfaces of the telescopic bracket 207. The movement of the telescopic bracket 207 drives the first slider 209 to slide on the first guide rail 208, thereby improving the guiding property of the movement of the telescopic bracket 207.

[0039] In this embodiment, when the H-beam 1 is cut at the groove, the first cylinder 203 contracts, and the telescopic bracket 207 is driven to be recovered through the first fixed seat 206, and the telescopic bracket 207 is moved to the feeding fixed frame 205. At the same time, the second cylinder 304 contracts, and the sliding bracket 302 is driven to move to the feeding fixed frame 301 through the second fixed seat 308, and then the H-beam 1 is fed through the feeding roller 204 and the adjusting roller 201. When the feeding is completed, the H-beam 1 is grooved by the laser cutting head 4. After the cutting is completed, the H-beam 1 is fed through the feeding roller 303.

[0040] When the H-beam 1 is in the straight cutting state, the first cylinder 203 and the second cylinder 304 are extended, and then the telescopic bracket 207 and the sliding bracket 302 are fully unfolded, and then the H-beam 1 is cut by the laser cutting head 4.

[0041] A clamping structure 202 for clamping and fixing the H-beam 1 is arranged in the telescopic bracket 207. The clamping structure 202 includes two positioning rollers. One positioning roller is arranged on a movable seat. The movable seat is movably arranged on a carrier through a telescopic cylinder. The carrier is arranged in the telescopic bracket 207. The positioning roller is driven to move by the extension and retraction of the telescopic cylinder. The H-beam 1 is clamped and fixed by the two positioning rollers. By setting the clamping structure 202, the inner surface of the H-beam 1 can be clamped and fixed, thereby improving the stability of the H-beam 1 during feeding.

[0042] Embodiment 4

[0043] See also Figure 5-Figure 7 The guiding and positioning structure includes an auxiliary bracket 210, which is arranged on one side surface of the telescopic bracket 207. A horizontal plate 213 is arranged in the auxiliary bracket 210. A mounting groove 218 is arranged on one side surface of the horizontal plate 213. A bidirectional screw rod 219 is rotatably arranged in the mounting groove 218. One end of the bidirectional screw rod 219 is connected to a servo motor 211 located on one side surface of the auxiliary bracket 210. A first nut 217 and a second nut 220 are symmetrically arranged on both sides of the bidirectional screw rod 219. A first clamp 212 is arranged on one side surface of the first nut 217, and a second clamp 215 is arranged on one side surface of the second nut 220. By rotating the bidirectional screw rod 219, the spacing between the first clamp 212 and the second clamp 215 can be adjusted at the same time. During the cutting process of the H-shaped steel 1, the cutting position of the H-shaped steel 1 can be auxiliary fixed to improve the accuracy of laser cutting.

[0044] In this embodiment, the movement of the telescopic bracket 207 drives the auxiliary bracket 210 to move. When the H-beam 1 moves to the cutting position, the bidirectional screw rod 219 is driven to rotate by the servo motor 211. The rotation of the bidirectional screw rod 219 drives the first nut 217 and the second nut 220 to move in opposite directions. The first nut 217 drives the first clamp 212 to move, and the second nut 220 drives the second clamp 215 to move. When the first clamp 212 and the second clamp 215 are in contact with the H-beam 1, the first clamp 212 and the second clamp 215 clamp and fix the H-beam 1, which can ensure the stability of the H-beam 1 when it is cut, and ensure the cutting accuracy.

[0045] Embodiment 5

[0046] See also Figure 6 and Figure 7 An adjusting rod 224 is provided on one side surface of the first clamp 212 and the second clamp, one end of the adjusting rod 224 is slidably provided in the support box 214, the support box 214 is provided in the middle of the upper side surface of the horizontal plate 213, and an adjusting wedge block 223 is provided at one end of the adjusting rod 224, one end of the adjusting wedge block 223 is fitted with the guide structure, and the movement of the adjusting rod 224 can drive the adjustment wedge block 223 to move.

[0047] The guiding structure includes a main wedge block 221, which is arranged at one end of the longitudinal lifting rod 222. The main wedge block 221 is fitted with an adjusting wedge block 223. The longitudinal lifting rod 222 is movably arranged in the middle of the support box 214. A material guide roller 216 is arranged at one end of the longitudinal lifting rod 222. By adjusting the movement of the wedge block 223, the height of the material guide roller 216 can be adjusted to facilitate the guiding of the H-shaped steel 1 after cutting.

[0048] In this embodiment, after the H-beam 1 is cut, the bidirectional screw rod 219 is driven to rotate by the servo motor 211, and the first nut 217 and the second nut 220 simultaneously drive the first clamp 212 and the second clamp 215 to move, and the first clamp 212 and the second clamp 215 are separated from the H-beam 1. At the same time, the first clamp 212 and the second clamp 215 simultaneously drive the adjustment rod 224 to move, and the adjustment rod 224 drives the adjustment wedge block 223 to move. When the adjustment wedge block 223 is fitted with the main wedge block 221, the movement of the adjustment wedge block 223 drives the main wedge block 221 to move, and the movement of the main wedge block 221 drives the longitudinal lifting rod 222 to move, and the movement of the longitudinal lifting rod 222 drives the guide roller 216 to lift, thereby fitting the guide roller 216 with the H-beam 1, and the rotation of the guide roller 216 facilitates the feeding of the H-beam 1.

[0049] Embodiment 6

[0050] See also Figure 8-Figure 10The feeding mechanism 3 includes a feeding fixed frame 301, which is arranged on one side of the feed fixed frame 205. A sliding bracket 302 is arranged on one side of the feeding fixed frame 301. A plurality of feeding rollers 303 are rotatably arranged on one side of the sliding bracket 302. The plurality of feeding rollers 303 are synchronously rotated through a transmission structure.

[0051] The transmission structure includes a driving sprocket 311, which is arranged at one end of the output shaft of the driving motor 306, and the driving motor 306 is arranged on the side surface of the mounting frame 312, and the mounting frame 312 is arranged on the side surface of the sliding bracket 302. The driving sprocket 311 is connected to the driven double-row sprocket 307 through the chain 305, and the driven double-row sprockets 307 are respectively arranged on one side of multiple groups of feeding rollers 303. The driven double-row sprockets 307 are connected in sequence through the chain 305, which can make the multiple groups of feeding rollers 303 rotate synchronously and feed the H-shaped steel 1.

[0052] A second cylinder 304 is arranged on one side of the feeding fixed frame 301, and one end of the piston rod of the second cylinder 304 is connected to the second fixed seat 308. The second fixed seat 308 is arranged on one side of the bottom of the sliding bracket 302. The sliding bracket 302 can be driven to move by the extension and retraction of the second cylinder 304. A second guide rail 309 is symmetrically arranged on the surface of one side of the feeding fixed frame 301. A second slider 310 is slidably arranged on the second guide rail 309. The second slider 310 is symmetrically arranged on both sides of the sliding bracket 302. The sliding movement drives the second slider 310 to slide on the second guide rail 309, thereby improving the stability of the movement of the sliding bracket 302.

[0053] In this embodiment, the sliding bracket 302 can be driven to move by the extension and retraction of the second cylinder 304. When the H-beam 1 is cut, the driving motor 306 drives the driving sprocket 311 to rotate. The driving sprocket 311 drives the driven double-row sprocket 307 to rotate through the chain 305. The driven double-row sprocket 307 is driven by the chain 305 to make multiple groups of feeding rollers 303 rotate synchronously at the same time. By rotating multiple groups of feeding rollers 303 synchronously, the H-beam 1 can be fed.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic platform device for a material channel of an H-beam laser cutting machine, characterized in that: The invention comprises a feeding mechanism (2) and a feeding mechanism (3), wherein the feeding mechanism (3) is arranged on one side of the feeding mechanism (2), and laser cutting heads (4) are arranged on both sides of the feeding mechanism (2) and the feeding mechanism (3); the feeding mechanism (2) comprises a feeding fixed frame (205), a telescopic bracket (207) which can be moved laterally is arranged on one side of the feeding fixed frame (205), a plurality of groups of feeding rollers (204) are rotatably arranged on the upper side of the feeding fixed frame (205), an adjusting roller (201) is rotatably arranged on the surface of one side of the telescopic bracket (207), a first cylinder (203) is arranged on one side of the feeding fixed frame (205), one end of the piston rod of the first cylinder (203) is connected to a first fixing seat (206), the first fixing seat (206) is arranged on one side of the bottom of the telescopic bracket (207), and a guiding and positioning structure for cutting H-shaped steel (1) is arranged on the surface of one side of the telescopic bracket (207); A clamping structure (202) for clamping and fixing the H-shaped steel (1) is arranged in the telescopic bracket (207); A first guide rail (208) is disposed on one side of the upper surface of the feed fixed frame (205), a first sliding block (209) is slidably disposed on the first guide rail (208), and the first sliding block (209) is disposed on the surfaces of both sides of the telescopic bracket (207); The guiding and positioning structure comprises an auxiliary bracket (210), wherein the auxiliary bracket (210) is arranged on a side surface of the telescopic bracket (207), a transverse plate (213) is arranged inside the auxiliary bracket (210), a mounting groove (218) is arranged on a side surface of the transverse plate (213), a bidirectional screw rod (219) is rotatably arranged inside the mounting groove (218), one end of the bidirectional screw rod (219) is connected to a servo motor (211) located on a side surface of the auxiliary bracket (210), a first screw nut (217) and a second screw nut (220) are symmetrically arranged on both sides of the bidirectional screw rod (219), a first clamp (212) is arranged on a side surface of the first screw nut (217), and a second clamp (215) is arranged on a side surface of the second screw nut (220); An adjustment rod (224) is provided on one side surface of the first clamp (212) and the second clamp, one end of the adjustment rod (224) is slidably arranged in the support box (214), the support box (214) is arranged in the middle of the upper side surface of the horizontal plate (213), one end of the adjustment rod (224) is provided with an adjustment wedge block (223), and one end of the adjustment wedge block (223) is in contact with the guide structure; The guide structure comprises a main wedge (221), the main wedge (221) is arranged at one end of a longitudinal lifting rod (222), the main wedge (221) is in contact with an adjustment wedge (223), the longitudinal lifting rod (222) is movably arranged in the middle of the support box (214), and a material guide roller (216) is arranged at one end of the longitudinal lifting rod (222); The feeding mechanism (3) comprises a feeding fixed frame (301), the feeding fixed frame (301) being arranged on one side of the feed fixed frame (205), a sliding bracket (302) being arranged on one side of the feeding fixed frame (301), a plurality of groups of feeding rollers (303) being rotatably arranged on one side of the sliding bracket (302), and the plurality of groups of feeding rollers (303) being rotated synchronously by means of a transmission structure.

2. The H-beam laser cutting machine material channel telescopic platform device according to claim 1 is characterized in that: The transmission structure comprises a driving sprocket (311), the driving sprocket (311) being arranged on one end of an output shaft of a driving motor (306), the driving motor (306) being arranged on a side surface of a mounting frame (312), the mounting frame (312) being arranged on a side surface of a sliding bracket (302), the driving sprocket (311) being connected to a driven double-row sprocket (307) via a chain (305), the driven double-row sprocket (307) being arranged on one side of a plurality of groups of feeding rollers (303), and the driven double-row sprockets (307) being connected in sequence via the chain (305).

3. The H-beam laser cutting machine material channel telescopic platform device according to claim 1, characterized in that: A second cylinder (304) is disposed on one side of the feed fixed frame (301), one end of a piston rod of the second cylinder (304) is connected to a second fixed seat (308), and the second fixed seat (308) is disposed on one side of the bottom of the sliding bracket (302).

4. The H-beam laser cutting machine material channel telescopic platform device according to claim 1, characterized in that: A second guide rail (309) is symmetrically arranged on one side surface of the feed fixed frame (301), a second slide block (310) is slidably arranged on the second guide rail (309), and the second slide block (310) is symmetrically arranged on both sides of the sliding bracket (302).

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