Fixing structure of laser cutting machine for special-shaped plate

Abstract

The application discloses a special-shaped plate laser cutting bed fixing structure, which comprises a machine table, a fixing structure is arranged on the machine table, the fixing structure comprises a linear module, the linear module is arranged on the machine table, a stepping motor A is arranged on the linear module, a movable seat is arranged on a nut of the linear module, a connecting frame is arranged on the movable seat, an extension plate is connected to an inner cavity of the connecting frame through a rotating shaft, a stepping motor B is arranged on the connecting frame, the stepping motor B is in transmission connection with the extension plate, a silica gel sheet is arranged at the bottom side of the extension plate, a plurality of extrusion rollers are arranged at the bottom side of the silica gel sheet, a connecting strip is arranged at the bottom side of the silica gel sheet corresponding to the two ends of each extrusion roller, and the two ends of each extrusion roller are connected with the corresponding two connecting strips through rotating shafts A. The application has the advantages that the deformation of the silica gel sheet is matched, the plurality of extrusion rollers are adjusted in height and angle along the arc surface, and the wave-shaped surface of the special-shaped plate is positioned more stably.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting processing, in particular to a fixing structure of a laser cutting bed for special-shaped plates. BACKGROUND

[0002] Laser cutting is widely used in the processing of special-shaped plates. The laser cutting bed is a numerical control device specially designed for high-precision and high-efficiency cutting. The laser cutting bed includes a laser generator, a motion system, a cutting head, a workbench and a control system.

[0003] Laser generator: CO2 laser (non-metal cutting), fiber laser (metal / non-metal universal), YAG laser (high-reflective material);

[0004] Motion system: high-precision linear motor or servo motor drive, cooperating with ball linear module / gear rack to realize high-speed positioning;

[0005] Cutting head: automatic focusing device (Z-axis dynamic adjustment), equipped with air pressure sensor and capacitive height tracking system;

[0006] Control system: PC-based numerical control system, supporting DWG / AI file import and automatic path optimization.

[0007] For cutting of special-shaped plates, especially wavy special-shaped plates, the wavy special-shaped plate is placed on the workbench. The existing fixing structure for the plate is clamping and fixing. The clamping plate is in contact with the wavy surface of the special-shaped plate for positioning. However, the contact position of the clamping plate with the wavy surface of the special-shaped plate is limited. The clamping plate can only resist the peak end of the wavy surface, and the fixing capacity is limited. Excessive extrusion force is easy to cause damage to the wavy surface.

[0008] In view of this, a fixing structure of a laser cutting bed for special-shaped plates is proposed. SUMMARY

[0009] The present application aims to provide a fixing structure of a laser cutting bed for special-shaped plates to solve the problems in the background art.

[0010] To achieve the above object, the present application provides the following technical scheme: a special-shaped plate laser cutting bed fixing structure, comprising a machine table, two fixing structures are symmetrically arranged on both sides of the machine table, the fixing structure comprises a linear module, the linear module is fixedly arranged on the machine table, a stepping motor A is fixedly arranged on the linear module, the stepping motor A is in transmission connection with a lead screw on the linear module, a nut is threadedly connected with the lead screw, the nut on the linear module is fixedly arranged with a movable seat, the movable seat is fixedly arranged with a connecting frame, the inner cavity of the connecting frame is rotatably connected with the inner end of an extension plate through a rotating shaft, a stepping motor B is fixedly arranged on the connecting frame, the stepping motor B is in transmission connection with the inner end of the extension plate, a plurality of silica gel sheets are arranged on the bottom side of the outer end of the extension plate, the silica gel sheets are arc-shaped, a plurality of extrusion rollers are arranged on the bottom side of the silica gel sheets, the extrusion rollers are made of silica gel rollers, connecting strips are fixedly arranged on the bottom side of the silica gel sheets corresponding to the two ends of the extrusion rollers, the two ends of the extrusion rollers are rotatably connected with the two connecting strips corresponding to the two ends through rotating shafts A, and the plurality of extrusion rollers are in abutting cooperation with the wave side of the special-shaped plate placed on the machine table.

[0011] Preferably, the silica gel sheet is connected with the bottom side of the outer end of the extension plate through a positioning assembly, the positioning assembly comprises a fixed block, the fixed block is fixedly arranged on one side of the bottom side of the outer end of the extension plate, the other side of the bottom side of the outer end of the extension plate is movably arranged with a movable block, a screw rod is threadedly arranged on the movable block, one end of the screw rod is rotatably connected with the fixed block through a rotating shaft B, the other end of the screw rod is fixedly arranged with a rotating handle, the bottom end of the fixed block is fixedly arranged with an L-shaped plate A, the bottom end of the movable block is fixedly arranged with an L-shaped plate B, the horizontal section of the L-shaped plate B is inserted into the hole of the horizontal end of the L-shaped plate A in cooperation, the longitudinal end of the L-shaped plate A and the longitudinal end of the L-shaped plate B are respectively provided with clamping components, the clamping components comprise a clamping block A, the clamping block A is fixedly arranged on the longitudinal end of the L-shaped plate A or the longitudinal end of the L-shaped plate B, the clamping block A is L-shaped, the clamping block A is in abutting cooperation with the middle section of the side end of the silica gel sheet, and the hole in the clamping block A is inserted into the plug column A fixedly arranged on the middle section of the side end of the silica gel sheet in cooperation.

[0012] Preferably, the top end of the movable block is fixedly arranged with a sliding block, the sliding block is T-shaped, and the sliding block is in sliding cooperation with the sliding groove arranged on the bottom side of the extension plate.

[0013] Preferably, the positioning assembly further comprises a clamping block B, two clamping blocks B are symmetrically distributed with the clamping block A, the clamping block B is connected with the clamping block A through a spring sheet, and the hole in the clamping block B is inserted into the plug column B fixedly arranged on the end of the side end of the silica gel sheet in cooperation.

[0014] Preferably, the positioning assembly further comprises a limiting block A and a limiting block B, the limiting block A is fixedly connected with the clamping block A, the limiting block B is fixedly connected with the clamping block B, the limiting block A is connected with a resisting block A through a plurality of multi-stage telescopic rods A, the limiting block B is connected with a resisting block B through a plurality of multi-stage telescopic rods B, the resisting block A and the resisting block B are connected through a clamping piece, the clamping piece comprises an L-shaped clamping block, the transverse section of the L-shaped clamping block is connected with the outer end of the resisting block B through a torsional spring, and the longitudinal section of the L-shaped clamping block is positioned and matched with the outer end of the resisting block A.

[0015] Preferably, a slot is formed in the silica gel sheet, and a support plate is inserted into the slot.

[0016] Preferably, one end of the support plate is provided with an inclined extension section.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1、By setting the silica gel sheet, the extrusion roller and the connecting strip, the deformation of the silica gel sheet is matched, a plurality of extrusion rollers correspondingly adjust the height and angle along the arc surface, the large-area extrusion fixes the wave-shaped surface of the special-shaped plate, the positioning of the wave-shaped surface of the special-shaped plate is more stable, and the wave-shaped surface of the special-shaped plate is not easy to be damaged, the problem that the fixing capacity of the clamping plate is limited and the excessive extrusion force easily causes the wave-shaped surface to be damaged is solved.

[0019] 2、By setting the fixing block, the L-shaped plate A, the movable block, the L-shaped plate B, the sliding block, the screw rod, the handle, the clamping block A and the insertion column A, the width of the region for clamping the silica gel sheet is adjusted, and the silica gel sheet is conveniently installed or dismounted.

[0020] 3、By setting the clamping block B, the insertion column B and the elastic sheet, the silica gel sheet is further clamped and positioned through the butt joint of the clamping block B and the insertion column B, and when the silica gel sheet deforms, the silica gel sheet is acted on by the elastic force generated by the deformation of the elastic sheet, so that the extrusion roller contacts the wave-shaped surface of the special-shaped plate more tightly.

[0021] 4、By setting the limiting block A, the limiting block B, the multi-stage telescopic rod A, the resisting block A, the multi-stage telescopic rod B, the resisting block B, the L-shaped clamping block and the torsional spring, when the clamping block A and the clamping block B butt joint with the insertion column A and the insertion column B, the clamping block A and the clamping block B are kept stable, and the butt joint is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 It is a schematic diagram of the fixing structure of the present application;

[0024] Figure 3Fig. 1 is a schematic view of the connecting structure of the silicone sheet and the extrusion roller according to the present application;

[0025] Figure 4 Fig. 2 is a schematic view of the connecting structure of the positioning assembly according to the present application;

[0026] Figure 5 Fig. 3 is a schematic view of the connecting structure of the extension plate according to the present application;

[0027] Figure 6 Fig. 4 is a schematic view of the mounting structure of the silicone sheet according to the present application;

[0028] Figure 7 Fig. 5 is a schematic view of the clamping component according to the present application;

[0029] Figure 8 Fig. 6 is a schematic view of the mounting structure of the support plate according to the present application;

[0030] Figure 9 Fig. 7 is a schematic view of the support structure of the clamping component according to the present application;

[0031] Figure 10 Fig. 8 is a schematic view of the Figure 9 Fig. 9 is an enlarged schematic view of A of Fig. 8.

[0032] In the figure: 100, machine table; 200, fixed structure;

[0033] 201, linear module; 202, stepper motor A; 203, movable seat; 204, connecting frame; 205, extension plate; 206, stepper motor B; 207, positioning assembly; 208, silicone sheet; 209, extrusion roller; 210, connecting strip; 211, support plate; 212, rotating shaft;

[0034] 2051, sliding groove;

[0035] 2071, fixed block; 2072, L-shaped plate A; 2073, movable block; 2074, L-shaped plate B; 2075, sliding block; 2076, screw rod; 2077, rotating handle; 2078, clamping component;

[0036] 20781, clamping block A; 20782, clamping block B; 20783, elastic sheet; 20784, limiting block A; 20785, limiting block B; 20786, multi-stage telescopic rod A; 20787, resisting block A; 20788, multi-stage telescopic rod B; 20789, resisting block B; 207810, L-shaped clamping block; 207811, torsion spring;

[0037] 2081, insertion column A; 2082, insertion column B; 2083, insertion groove. DETAILED DESCRIPTION

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0039] Please refer to Figures 1 to 3 An embodiment provided by the present application is a fixing structure of a laser cutting bed for special-shaped plates, which comprises a machine table 100. The machine table 100 is arranged on a machine frame of the laser cutting bed. A special-shaped plate is placed on the machine table 100. Two fixing structures 200 are symmetrically arranged on both sides of the machine table 100. The fixing structure 200 comprises a linear module 201. A screw rod is rotatably arranged in a machine base of the linear module 201. The linear module 201 is fixedly arranged on the machine table 100. A stepping motor A 202 is fixedly arranged on the linear module 201. The stepping motor A 202 is selected and used by a person skilled in the art according to actual conditions. The stepping motor A 202 is in transmission connection with the screw rod on the linear module 201. A nut is threadedly connected to the screw rod. The nut on the linear module 201 is fixedly arranged with a movable seat 203. The movable seat 203 moves along the screw rod along with the nut. The movable seat 203 is fixedly arranged with a connecting frame 204. The inner cavity of the connecting frame 204 is rotatably connected with the inner end of an extension plate 205 through a rotating shaft 212. A stepping motor B 206 is fixedly arranged on the connecting frame 204. The stepping motor B 206 is selected and used by a person skilled in the art according to actual conditions. The stepping motor B 206 is in transmission connection with the inner end of the extension plate 205. The stepping motor B 206 drives the outer end of the extension plate 205 to rotate, so that the extension plate 205 rotates and adjusts the position relative to the connecting frame 204.

[0040] The outer end of the extension plate 205 is provided with a plurality of silica gel sheets 208. The silica gel sheets 208 are in an arc shape. The bottom side of the silica gel sheet 208 is provided with a plurality of extrusion rollers 209. The extrusion rollers 209 are made of silica gel rollers. The bottom side of the silica gel sheet 208 corresponding to the two ends of the extrusion roller 209 is fixedly arranged with a connecting strip 210. The two ends of the extrusion roller 209 are rotatably connected with the corresponding two connecting strips 210 through a rotating shaft A. The plurality of extrusion rollers 209 are in abutting cooperation with the wave side of the special-shaped plate placed on the machine table 100.

[0041] After the profiled sheet is placed on the machine table 100, the extension plate 205 outer end is rotated by the stepping motor B 206, so that the extension plate 205 rotates relative to the connecting frame 204, the extension plate 205 rotates to be horizontal relative to the connecting frame 204, the stepping motor A 202 is started to drive the screw rod to rotate, the nut moves downward along the screw rod, the movable seat 203 moves downward with the nut, the connecting frame 204 and the extension plate 205 move downward, the silica gel sheet 208 and the extrusion roller 209 move downward together, until the extrusion roller 209 contacts the wave-shaped surface of the profiled sheet, a plurality of extrusion rollers 209 contact the wave-shaped surface and are correspondingly extruded and pushed, the plurality of extrusion rollers 209 are independent of each other, cooperate with the deformation of the silica gel sheet 208, the plurality of extrusion rollers 209 correspondingly adjust the height and angle along the curved surface, and the wave-shaped surface of the profiled sheet is extruded and fixed in a large area.

[0042] The present application has the advantages of cooperating with the deformation of the silica gel sheet 208, the plurality of extrusion rollers 209 correspondingly adjusting the height and angle along the curved surface, and the wave-shaped surface of the profiled sheet being extruded and fixed in a large area, the wave-shaped surface of the profiled sheet is more stable and not easy to be damaged, and the problem of limited fixing capacity of the clamping plate only resisting the peak end of the wave-shaped surface and easy to cause damage to the wave-shaped surface by excessive extrusion force is solved.

[0043] Please refer to Figure 2 、 Figures 4 to 8 An embodiment provided by the present application: a profiled sheet laser cutting bed fixing structure, the silica gel sheet 208 is connected with the outer end bottom side of the extension plate 205 through the positioning assembly 207, the positioning assembly 207 includes a fixed block 2071, the fixed block 2071 is fixedly arranged on one side of the outer end bottom side of the extension plate 205, the other side of the outer end bottom side of the extension plate 205 movably arranged has a movable block 2073, the movable block 2073 is fixedly arranged with a sliding block 2075 at the top end, the sliding block 2075 is T-shaped, and the sliding block 2075 is slidably connected with the sliding groove 2051 arranged on the bottom side of the extension plate 205; when the movable block 2073 moves, the T-shaped sliding block 2075 slides along the sliding groove 2051, so that the movable block 2073 moves stably; the screw rod 2076 is threadedly arranged on the movable block 2073, one end of the screw rod 2076 is rotatably connected with the fixed block 2071 through the rotating shaft B, and the other end of the screw rod 2076 is fixedly arranged with a handle 2077.

[0044] The bottom end of the fixed block 2071 is fixedly provided with an L-shaped plate A 2072, and the bottom end of the movable block 2073 is fixedly provided with an L-shaped plate B 2074, the transverse section of the L-shaped plate B 2074 is inserted into the hole of the L-shaped plate A 2072, the longitudinal end of the L-shaped plate A 2072 and the longitudinal end of the L-shaped plate B 2074 are respectively provided with clamping components 2078, the clamping components 2078 comprise clamping blocks A 20781, the clamping blocks A 20781 are fixedly provided on the longitudinal end of the L-shaped plate A 2072 or the longitudinal end of the L-shaped plate B 2074, the clamping blocks A 20781 are L-shaped, the clamping blocks A 20781 abut the middle section of the side end of the silica gel sheet 208, and the hole in the clamping blocks A 20781 is inserted into the insertion column A 2081 fixedly provided in the middle section of the side end of the silica gel sheet 208.

[0045] When the silica gel sheet 208 is installed, the silica gel sheet 208 is placed between the two opened clamping components 2078, the insertion column A 2081 on one side end of the silica gel sheet 208 is inserted into the hole in the clamping block A 20781 in the direction of the fixed block 2071, the handle 2077 is rotated, the screw rod 2076 is rotated, so that the movable block 2073 is driven to move along the screw rod 2076, the sliding block 2075 slides along the sliding groove 2051, the L-shaped plate B 2074 is driven to move relative to the L-shaped plate A 2072, the transverse section of the L-shaped plate B 2074 is inserted into the hole in the transverse end of the L-shaped plate A 2072, until the insertion column A 2081 on the other side of the silica gel sheet 208 is inserted into the hole in the clamping block A 20781 in the direction of the movable block 2073, and the two clamping blocks A 20781 clamp and position the silica gel sheet 208.

[0046] The present application has the advantages of adjusting the width of the clamped silica gel sheet 208 region and facilitating the installation or disassembly of the silica gel sheet 208 by arranging the fixed block 2071, the L-shaped plate A 2072, the movable block 2073, the L-shaped plate B 2074, the sliding block 2075, the screw rod 2076, the handle 2077, the clamping block A 20781 and the insertion column A 2081.

[0047] The positioning assembly 207 further comprises clamping blocks B 20782, the two clamping blocks B 20782 are symmetrically distributed with the clamping blocks A 20781, the clamping blocks B 20782 are connected with the clamping blocks A 20781 through elastic sheets 20783, and the holes in the clamping blocks B 20782 are inserted into the insertion columns B 2082 fixedly provided at the end of the side end of the silica gel sheet 208.

[0048] When the clamping blocks A 20781 correspondingly clamp the silica gel sheet 208, the insertion columns B 2082 are correspondingly inserted into the holes in the clamping blocks B 20782, the silica gel sheet 208 is further clamped and positioned, and when the silica gel sheet 208 is deformed, the elastic sheets 20783 are correspondingly deformed, the silica gel sheet 208 is acted on by the elastic force generated by the deformation of the elastic sheets 20783, and the squeeze roller 209 is tightly attached to the wavy surface of the special-shaped plate.

[0049] The present application has the advantages that the silicon rubber sheet 208 is further clamped and positioned through the butt joint of the clamping block B20782 and the insertion column B2082, and when the silicon rubber sheet 208 deforms, the silicon rubber sheet 208 is subjected to the elastic force generated by the deformation of the elastic sheet 20783, so that the extrusion roller 209 contacts the wavy surface of the special-shaped plate more tightly.

[0050] Please refer to Figures 6 to 10 In one embodiment of the present application, the special-shaped plate laser cutting bed fixing structure further comprises a positioning assembly 207, the positioning assembly 207 comprises a clamping block A20781 and a clamping block B20782, the clamping block A20781 and the clamping block B20782 are connected through a plurality of insertion columns A2081 and insertion columns B2082, the clamping block A20781 is connected with a clamping piece A20783, the clamping piece A20783 is connected with a silicon rubber sheet 208, the clamping block B20782 is connected with a clamping piece B20784, the clamping piece B20784 is connected with the silicon rubber sheet 208, the clamping piece A20783 and the clamping piece B20784 are connected through a plurality of elastic sheets 20783, the clamping piece A20783 and the clamping piece B20784 are connected through a plurality of extrusion rollers 209, the clamping piece A20783 and the clamping piece B20784 are connected through a plurality of extrusion rollers 209, and the clamping piece A20783 and the clamping piece B20784 are connected through a plurality of extrusion rollers 209.

[0051] When the silicon rubber sheet 208 is installed, in order to keep the relative stability of the clamping block A20781 and the clamping block B20782, the abutting block A20787 and the abutting block B20789 are pulled out, the L-shaped clamping block 207810 clamps the outer end of the abutting block A20787, the limiting block A20784, the limiting block B20785, the multi-stage telescopic rod A20786, the abutting block A20787, the multi-stage telescopic rod B20788 and the abutting block B20789 form a connecting piece, and the clamping block A20781 and the clamping block B20782 are connected and kept relatively stable.

[0052] The present application has the advantages that the clamping block A20781 and the clamping block B20782 are kept stable when being connected with the insertion column A2081 and the insertion column B2082, and the connection is convenient.

[0053] The silicon rubber sheet 208 is provided with a slot 2083, and a support plate 211 is inserted into the slot 2083; after the support plate 211 is inserted into the slot 2083, the silicon rubber sheet 208 is kept in shape; one end of the support plate 211 is provided with an inclined extension section, and the staff can conveniently take out the support plate 211 from the slot 2083 through the extension section, and the silicon rubber sheet 208 after the support plate 211 is taken out does not affect normal deformation.

[0054] Working principle: when the silicon rubber sheet 208 is installed, the silicon rubber sheet 208 is placed between the two opened clamping parts 2078, at this time, the support plate 211 is inserted into the slot 2083, the block A 20787 and the block B 20789 are connected through the clamping piece, the limiting block A 20784, the limiting block B 20785, the multi-stage telescopic rod A 20786, the block A 20787, the multi-stage telescopic rod B 20788 and the block B 20789 form a connecting piece, the clamping block A 20781 and the clamping block B 20782 are connected and kept relatively stable, and are connected and kept relatively stable with the silicon rubber sheet 208; the plug-in column A 2081 on one side of the silicon rubber sheet 208 is inserted into the hole on the clamping block A 20781 in the direction of the fixed block 2071, and the corresponding plug-in column B 2082 is inserted into the hole on the clamping block B 20782; the handle 2077 is rotated, the screw rod 2076 is rotated, thereby driving the movable block 2073 to move along the screw rod 2076, the sliding block 2075 slides along the sliding groove 2051, and the L-shaped plate B 2074 moves relative to the L-shaped plate A 2072, the horizontal section of the L-shaped plate B 2074 extends into the hole on the horizontal end of the L-shaped plate A 2072, until the plug-in column A 2081 on the other side of the silicon rubber sheet 208 is inserted into the hole on the clamping block A 20781 in the direction of the movable block 2073, the two clamping blocks A 20781 clamp and position the silicon rubber sheet 208, and the corresponding plug-in column B 2082 is inserted into the hole on the clamping block B 20782; then the staff takes out the support plate 211 from the slot 2083 by pushing the extension section, the staff presses the horizontal end of the L-shaped clamping block 207810, so that the torsional spring 207811 is compressed, the longitudinal section of the L-shaped clamping block 207810 is separated from the outer end of the block A 20787, the block A 20787 is pushed to move until it contacts the limiting block A 20784, the multi-stage telescopic rod A 20786 is shortened, the block B 20789 is pushed to move until it contacts the limiting block B 20785, the multi-stage telescopic rod B 20788 is shortened, and the clamping block A 20781 and the clamping block B 20782 are no longer rigidly connected.

[0055] After the profiled sheet is placed on the machine 100, the extension plate 205 outer end is rotated by the stepper motor B206, so that the extension plate 205 rotates relative to the connecting frame 204, the extension plate 205 rotates to be horizontal relative to the connecting frame 204, the stepper motor A202 is started to drive the screw rod to rotate, the nut moves downward along the screw rod, the movable seat 203 moves downward with the nut, the connecting frame 204 and the extension plate 205 move downward, the silica gel sheet 208 and the extrusion roller 209 move downward together, until the extrusion roller 209 contacts the wavy surface of the profiled sheet, multiple extrusion rollers 209 contact the wavy surface and are correspondingly extruded and pushed, multiple extrusion rollers 209 are independent of each other, cooperate with the deformation of the silica gel sheet 208, multiple extrusion rollers 209 correspondingly adjust the height and angle along the curved surface, when the silica gel sheet 208 deforms, the spring sheet 20783 correspondingly deforms, the spring sheet 20783 generates elastic force to the silica gel sheet 208, the extrusion roller 209 tightly contacts the wavy surface of the profiled sheet, and the wavy surface of the profiled sheet is extruded and fixed in a large area.

[0056] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claim.

Claims

1. A fixing structure for a laser cutting bed for irregularly shaped sheets, characterized in that: The system includes a machine base (100), which has a fixed structure (200). The fixed structure (200) includes a linear module (201) mounted on the machine base (100). A stepper motor A (202) is mounted on the linear module (201). A nut on the linear module (201) has a movable seat (203). A connecting frame (204) is mounted on the movable seat (203). An extension plate is connected to the inner cavity of the connecting frame (204) via a rotating shaft (212). 205), the connecting frame (204) is provided with a stepper motor B (206), the stepper motor B (206) is connected to the extension plate (205) in a transmission manner, the extension plate (205) is provided with a silicone sheet (208) on the bottom side, the silicone sheet (208) is provided with a plurality of extrusion rollers (209) on the bottom side, the silicone sheet (208) at both ends of the extrusion roller (209) is provided with a connecting strip (210) on the bottom side of the silicone sheet (208) respectively, and the two ends of the extrusion roller (209) are connected to the two corresponding connecting strips (210) through a rotating shaft A; The silicone sheet (208) is connected to the bottom side of the extension plate (205) via a positioning component (207). The positioning component (207) includes a fixing block (2071) located on the bottom side of the extension plate (205). A movable block (2073) is movably provided on the bottom side of the extension plate (205). A screw (2076) is threaded onto the movable block (2073). A handle (2077) is provided at the other end of the screw (2076). An L-shaped plate A (2072) is provided at the bottom end of the fixing block (2071), and an L-shaped plate B (2074) is provided at the bottom end of the movable block (2073). 074) The transverse section is inserted into the opening at the transverse end of the L-shaped plate A (2072). The longitudinal end of the L-shaped plate A (2072) and the longitudinal end of the L-shaped plate B (2074) are respectively provided with clamping components (2078). The clamping component (2078) includes a clamping block A (20781). The clamping block A (20781) is located at the longitudinal end of the L-shaped plate A (2072) or the longitudinal end of the L-shaped plate B (2074). The clamping block A (20781) abuts against the side end of the silicone sheet (208). The opening on the clamping block A (20781) is inserted into the insertion post A (2081) at the side end of the silicone sheet (208). The positioning component (207) further includes clamping blocks B (20782), two clamping blocks B (20782) are symmetrically distributed with respect to clamping block A (20781), clamping blocks B (20782) and clamping block A (20781) are connected by spring pieces (20783), and the openings on clamping blocks B (20782) are inserted and engaged with the insertion post B (2082) provided on the side end of the silicone sheet (208); The positioning component (207) further includes a limiting block A (20784) and a limiting block B (20785). The limiting block A (20784) is connected to the clamping block A (20781), and the limiting block B (20785) is connected to the clamping block B (20782). The limiting block A (20784) is connected to a stop block A (20787) via multiple multi-stage telescopic rods A (20786). The limiting block B (20785) is connected to a stop block A (20787) via multiple multi-stage telescopic rods A (20786). Telescopic rod B (20788) is connected to abutment block B (20789). Abutment block A (20787) and abutment block B (20789) are connected by a snap-fit ​​device. The snap-fit ​​device includes an L-shaped snap block (207810). The transverse section of the L-shaped snap block (207810) is connected to the outer end of abutment block B (20789) through a torsion spring (207811). The longitudinal section of the L-shaped snap block (207810) is positioned and engaged with the outer end of abutment block A (20787).

2. The fixing structure for a laser cutting bed for irregularly shaped plates according to claim 1, characterized in that: The top of the movable block (2073) is provided with a slider (2075), which is T-shaped and slides in cooperation with the groove (2051) opened on the bottom side of the extension plate (205).

3. The fixing structure for a laser cutting bed for irregularly shaped plates according to claim 1, characterized in that: The silicone sheet (208) has a slot (2083) and a support plate (211) is inserted into the slot (2083).

4. The fixing structure for a laser cutting bed for irregularly shaped plates according to claim 3, characterized in that: The support plate (211) has an inclined extension section at one end.

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