Color steel raw material laser cutting device for fire-resistant air pipe production and production process

Abstract

The invention relates to the technical field of laser cutting, and discloses a color steel raw material laser cutting device for fire-resistant air pipe production and a production technology.The color steel raw material laser cutting device for fire-resistant air pipe production comprises a laser cutting table, and the two ends of the laser cutting table are each symmetrically provided with two rollers; and a frame body is arranged at the top of the laser cutting table, and an electric push rod is arranged at the top of the frame body. According to the color steel raw material laser cutting device for fire-resistant air pipe production, through linkage of the clamping component and the stretching component, the warping uneven state of a color steel plate can be corrected into a flat state, and a constant reference is provided for laser cutting. The clamping component fixes and lifts the two ends of the plate, internal stress of the plate can be effectively extended, focus offset caused by surface fluctuation is fundamentally avoided, laser energy accurately acts on a preset area, it is guaranteed that the cutting track is highly matched with a designed path, and the machining precision of the fire-resistant air pipe component is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to a laser cutting device and a production process for color steel raw materials used in the production of refractory air ducts. Background Art

[0002] Fire safety is crucial in modern buildings. As a core component of ventilation and smoke exhaust systems, fire-resistant air ducts must be fireproof, high-strength, and airtight to withstand fire environments. Color-coated steel is an ideal material due to its high strength, corrosion resistance, and aesthetics, but its traditional processing has problems such as insufficient precision. Laser cutting technology uses a high-energy beam to achieve precise cutting, ensuring smooth and accurate cuts on color-coated steel, improving production efficiency, and meeting the high-standard production requirements for fire-resistant air ducts. Existing laser cutting devices can meet the high-standard production requirements for fire-resistant air ducts, but the following defects still exist during use:

[0003] 1. The uneven surface of color-coated steel sheets causes the laser focus position to shift with the sheet's undulations during laser cutting. Laser energy density attenuates in raised areas, leaving unmelted slag at the bottom of the cut. Concave areas, however, experience excessive melting due to concentrated energy, resulting in an irregular cut. This focus shift can cause the cutting trajectory to deviate from the designed path. This cumulative error can easily lead to dimensional deviations in the finished product, especially when processing complex shapes. Furthermore, the uneven surface can alter the assist gas injection angle, affecting slag removal and causing burrs along the cut edge. This increases subsequent processing workload and can even increase part scrap rates.

[0004] 2. Cutting uneven colored steel sheets can cause vibrations in the equipment, which can loosen the lens mount inside the cutting head over time, affecting laser focus quality. Uneven sheets can also cause irregular laser reflection paths, damaging the laser's internal optical components. Furthermore, the automatic focusing system must frequently compensate for sheet height variations during the cutting process, leading to frequent servo motor and driver failures and increased equipment downtime for calibration, reducing production efficiency and impacting processing stability. Summary of the Invention

[0005] In view of the problems of cutting accuracy deviation, impaired processing quality, equipment damage and reduced processing efficiency in the existing technology, a laser cutting device for color steel raw materials used in the production of refractory air ducts is proposed.

[0006] The present application provides a laser cutting device for color steel raw materials used in the production of refractory air ducts, the purpose of which is to eliminate the unevenness of the color steel plates during cutting, ensure that the surface flatness of the color steel plates meets the laser cutting requirements, and avoid the problems of cutting accuracy deviation and equipment loss caused by surface undulations.

[0007] The technical solution of the present invention is: a laser cutting device for color steel raw materials used in the production of refractory air ducts, comprising a laser cutting table, two rollers symmetrically distributed at both ends of the laser cutting table, a conveyor belt arranged between the two rollers, a frame provided on the top of the laser cutting table, an electric push rod provided on the top of the frame, a laser cutting head provided at the output end of the electric push rod, and a clamping unit provided on the laser cutting table;

[0008] The clamping unit includes a clamping component and a stretching component provided on the laser cutting table. The clamping component includes a lifting assembly and an upper pressing assembly provided on the laser cutting table. The stretching component includes a rotating assembly provided on the laser cutting table. The rotating assembly is provided with a reset assembly, a one-way rotation assembly and a pulling assembly.

[0009] The clamping components are used to clamp and lift the two ends of the color steel plate, and the stretching components are used to stretch the color steel plate to adjust the flatness of the color steel plate;

[0010] The lifting assembly includes two moving blocks symmetrically distributed on the laser cutting table, a movable groove is provided on the top of the moving block, a lower pressure plate is also provided on the top of the moving block, a first rack is provided on the inner side of the movable groove, a first gear is also provided on the inner side of the movable groove, a spiral ridge is provided on the first gear, the spiral ridge is meshed with the first rack, a guide rod is provided on the lower pressure plate, the guide rod is slidably connected to the moving block, a plurality of barbs are symmetrically distributed on the lower pressure plate, and a threaded hole connected to the inner side of the movable groove is provided on the moving block.

[0011] Furthermore, the upper pressure assembly includes a plurality of F-shaped blocks symmetrically distributed on the laser cutting table, the frame is fixedly connected to the F-shaped blocks, an upper pressure plate is arranged between the two facing F-shaped blocks, and a plurality of circular grooves are symmetrically distributed on the upper pressure plate, and the barbs are plugged into the inner sides of the corresponding circular grooves.

[0012] Furthermore, the rotating assembly includes a rotating shaft arranged on the laser cutting table, rotating rods are arranged at both ends of the rotating shaft, external threads are arranged on the rotating rods, the rotating rods are rotatably connected to the threaded holes, the external thread sections of the rotating rods are threadedly connected to the threaded holes, and rotating gears are arranged on the two rotating rods, which are meshed and connected with the corresponding first gears.

[0013] Furthermore, the reset assembly includes a groove arranged on the rotating rod, the rotating shaft is slidingly connected to the inner side of the groove, and a reset spring is arranged between the rotating shaft and the inner wall of the groove.

[0014] Furthermore, the one-way rotation component includes a one-way bearing arranged on the rotating rod, a one-way rotation gear is arranged on the one-way bearing, a first ring is arranged on the inner wall of the movable groove, a plurality of tooth grooves are distributed in a circular array on the first ring, and the one-way rotation gear is meshed and connected with the tooth grooves.

[0015] Furthermore, the pulling assembly includes a sleeve arranged on the first sleeve, a second sleeve arranged on the sleeve, a limiting rod arranged on the second sleeve, the limiting rod is fixedly connected to the inner wall of the movable groove, a pulling spring is also arranged on the sleeve, one end of the pulling spring is rotatably connected to the sleeve, and the other end of the pulling spring is fixedly connected to the inner wall of the movable groove, a spiral groove is provided on the sleeve, and a straight groove connected to the spiral groove is also provided on the sleeve, and rubber wedge blocks are provided on the inner walls of both ends of the spiral groove, a protrusion is provided on the inner side of the second sleeve, the protrusions are respectively slidably connected to the inner sides of the spiral groove and the straight groove, the protrusions are slidably connected to the inclined surface of the rubber wedge block, a T-shaped pulling rod is provided on the second sleeve, an annular groove is provided on the rotating gear, and the T-shaped pulling rod is limitedly slidably connected to the inner side of the annular groove.

[0016] Furthermore, the stretching component further includes an extrusion assembly provided on the upper pressing plate, and an upward pushing assembly is provided on the extrusion assembly;

[0017] The extrusion assembly includes a conical block arranged on a rotating rod, an extrusion cylinder is arranged on an upper pressure plate, an extrusion bent rod is arranged on the extrusion cylinder, the extrusion bent rod is slidably connected to the conical block, an L-shaped plate is arranged on the extrusion bent rod, the L-shaped plate is fixedly connected to the laser cutting table tube, and an extrusion spring is arranged between the extrusion cylinder and the extrusion bent rod.

[0018] Furthermore, the pushing assembly includes an active cavity arranged on the upper pressure plate, a second gear is arranged on the inside of the active cavity, a second rack is arranged at one end of the inside of the active cavity, and a third rack is arranged at the other end of the inside of the active cavity. The second rack and the third rack are both meshed and connected with the second gear, and the opposite sides of the second rack and the third rack extend outside the active cavity, and the extrusion cylinder extends away from one end of the extrusion bent rod into the active cavity and is fixedly connected to the second rack.

[0019] Furthermore, it also includes a driving assembly arranged on the laser cutting table, the driving assembly includes a driving motor arranged on the laser cutting table, the driving motor output shaft is provided with a driving wheel, the conical block is provided with a connecting shaft, and a belt is provided between the driving wheel and the connecting shaft.

[0020] Another object of the present invention is to provide a laser cutting production process for color steel raw materials used in the production of refractory air ducts, comprising the following steps:

[0021] S1: Place the color steel plate to be cut on one end of the laser cutting table and transport it through the conveyor belt;

[0022] S2: Start the driving motor to rotate forward, drive the rotating shaft to rotate, drive the rotating gear to rotate through the rotating rod, drive the lower pressing plate to move upward through the first gear and the spiral rib, and clamp the color steel plate under the action of the upper pressing plate;

[0023] S3: When the color steel plate contacts the upper pressing plate, the third rack is pushed to move the extrusion bent rod downward, squeezing the conical block to move the rotating rod toward the rotating axis. The external thread section of the rotating rod is threadedly connected with the threaded hole, causing the moving block to move. At this time, the rotating gear will not mesh with the first gear, stretching the color steel plate;

[0024] S4: Start the driving motor to reverse, drive the one-way rotating gear to rotate, drive the first ring to rotate, and then drive the sleeve to rotate, so that the second ring moves on the sleeve, and through the T-shaped pull rod, drive the rotating gear to move, so that the rotating gear re-engages with the first gear, and then the lower pressure plate moves downward, driving the color steel plate to move downward, and the cut color steel plate is transported out through the conveyor belt.

[0025] Beneficial effects of the present invention:

[0026] 1. Through the linkage of the clamping and stretching components, the warped and uneven shape of the color-coated steel sheet can be corrected to a flat state, providing a constant reference for laser cutting. The clamping components fix and lift the ends of the sheet, while the stretching components apply uniform tension through the rotation component and reset component. This can effectively extend the internal stress of the sheet, fundamentally avoiding focus shift caused by surface fluctuations, allowing laser energy to accurately act on the preset area, ensuring that the cutting trajectory is highly consistent with the designed path, and guaranteeing the processing accuracy of fire-resistant air duct components.

[0027] 2. The smooth color-coated steel plate creates a more regular laser reflection path, reducing impact damage to the focusing and reflective lenses within the cutting head and extending lens replacement cycles. Furthermore, the automatic focusing system eliminates the need to frequently compensate for plate height variations, reducing fatigue wear on the servo motor and driver, and reducing the number of equipment fault alarms. The tensile and extrusion components also prevent damage to the laser's internal optical elements caused by plate movement, effectively extending the service life of key equipment components.

[0028] 3. After the sheet is stretched and leveled, cutting eliminates the need for mid-cut calibration, reducing rework due to quality defects. Tight nesting improves sheet utilization, significantly increasing part output per unit time in mass production. The automated linkage of the clamping and stretching components shortens production cycles, reduces the need for manual intervention, and reduces post-processing tasks such as deburring. This reduces overall costs from both material utilization and production process perspectives, meeting mass production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the laser cutting device of the present invention from a first perspective;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the laser cutting device of the present invention from a second perspective;

[0031] Figure 3 It is a schematic structural diagram of the lifting assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the partial structure of the lifting assembly of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the rotating component of the present invention;

[0034] Figure 6 It is a schematic cross-sectional view of the reset assembly of the present invention;

[0035] Figure 7 It is a schematic cross-sectional structural diagram of the rotating assembly of the present invention;

[0036] Figure 8 This is a schematic diagram of the exploded structure of the one-way rotating assembly of the present invention;

[0037] Figure 9 It is a schematic diagram of the structure of the pulling assembly of the present invention;

[0038] Figure 10 It is a schematic diagram of the exploded structure of the pulling assembly of the present invention;

[0039] Figure 11 It is a schematic diagram of the partial structure of the pulling assembly of the present invention;

[0040] Figure 12 It is a schematic structural diagram of the extrusion assembly of the present invention;

[0041] Figure 13 This is a schematic diagram of the structure of the push-up assembly of the present invention;

[0042] Figure 14 Schematic diagram of the drive assembly structure of the present invention.

[0043] In the picture:

[0044] 1. Laser cutting table; 11. Conveyor belt; 12. Frame; 13. Electric push rod; 14. Laser cutting head; 2. Lifting assembly; 21. Moving block; 22. Lower pressure plate; 23. First rack; 24. First gear; 25. Spiral rib; 26. Guide rod; 3. Upper pressure assembly; 31. F-type block; 32. Upper pressure plate; 4. Rotating assembly; 41. Rotating shaft; 42. Rotating rod; 43. Rotating gear; 5. Reset assembly; 51. Reset spring; 6. One-way rotation assembly; 61. One-way rotation gear; 62. First ring; 63. Tooth groove; 7. Pulling assembly; 71. Sleeve; 72. Second ring; 73. Pulling spring; 74. Spiral groove; 75. Straight groove; 76. Rubber wedge block; 77. Protrusion; 78. T-shaped pulling rod; 8. Extrusion assembly; 81. Conical block; 82. Extrusion cylinder; 83. Extrusion bent rod; 84. L-shaped plate; 85. Extrusion spring; 9. Push-up assembly; 91. Second gear; 92. Second rack; 93. Third rack; 10. Driving assembly; 101. Driving motor; 102. Driving wheel; 103. Connecting shaft; 104. Belt. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] Example 1, with reference to Figures 1-11, which is the first embodiment of the present invention, provides a laser cutting device for color steel raw materials used in the production of refractory air ducts, including a laser cutting table 1, with two rollers symmetrically distributed and rotatably connected at both ends of the laser cutting table 1, a conveyor belt 11 is provided between the two rollers, a frame 12 is fixedly connected to the top of the laser cutting table 1, an electric push rod 13 is fixedly connected to the top of the frame 12, and a laser cutting head 14 is fixedly connected to the output end of the electric push rod 13, and also includes a clamping unit installed on the laser cutting table 1; the clamping unit includes a clamping component and a stretching component installed on the laser cutting table 1, the clamping component includes a lifting component 2 and an upper pressing component 3 installed on the laser cutting table 1, and the stretching component includes a rotating component 4 installed on the laser cutting table 1, and a reset component 5, a one-way rotating component 6 and a pulling component are installed on the rotating component 4. 7; The clamping component is used to clamp and lift the two ends of the color steel plate, and the stretching component is used to stretch the color steel plate to adjust the flatness of the color steel plate; the lifting assembly 2 includes two moving blocks 21 symmetrically distributed and slidably connected to the laser cutting table 1, and a movable groove is provided on the top of the moving block 21. The top of the moving block 21 is also slidably connected to the lower pressure plate 22, and the first rack 23 is slidingly connected to the inner side of the movable groove. The first gear 24 is also rotatably connected to the inner side of the movable groove. A spiral ridge 25 is fixedly connected to the first gear 24, and the spiral ridge 25 is meshed with the first rack 23. A guide rod 26 is fixedly connected to the lower pressure plate 22, and the guide rod 26 is slidably connected to the moving block 21. A plurality of barbs are symmetrically distributed and fixedly connected on the lower pressure plate 22, and a threaded hole connected to the inner side of the movable groove is provided on the moving block 21.

[0047] Specifically, the color steel plate to be laser cut is placed at one end of the top of the laser cutting table 1, one of the rollers is connected to a motor, the motor is started, and the roller rotates to drive the conveyor belt 11 to rotate and convey the color steel plate. When the color steel plate moves to the middle of the top of the laser cutting table 1, the motor is turned off, the color steel plate is clamped by the clamping component, and the color steel plate is driven to move upward. The bent color steel plate is stretched by the stretching component to make the surface of the color steel plate smoother. Under the action of the frame 12, the laser cutting head 14 is moved to the position to be cut on the color steel plate, the electric push rod 13 is started, and the laser cutting head 14 is driven to move toward the color steel plate. When it moves to the designated position, the electric push rod 13 is turned off, and the laser cutting head 14 is started to laser cut the color steel plate. When the color steel plate moves to the middle of the top of the laser cutting table 1, the two ends of the color steel plate will fall on the lower pressure plate 22, and the first gear 24 rotates, driving the spiral rib 25 to rotate. Under the action of the spiral rib 25, the first rack 23 is driven to move upward, and when the spiral rib 25 stops, it has a limiting effect on the first rack 23, driving the lower pressure plate 22 to move upward. Under the action of the guide rod 26, the movement of the lower pressure plate 22 is made more stable. When the top of the color steel plate contacts the lower pressure component 3, the color steel plate is clamped under the action of the lower pressure component 3. The processing accuracy of the fire-resistant air duct components is greatly improved, making it more in line with high-standard production requirements, reducing equipment downtime and calibration time, extending equipment service life, reducing equipment maintenance costs, and enabling the laser cutting device to continue to work efficiently, thereby improving the production efficiency of the fire-resistant air duct and meeting mass production needs.

[0048] Reference Figure 1 and Figure 2 The upper pressure assembly 3 includes a plurality of F-shaped blocks 31 symmetrically distributed and fixedly connected to the laser cutting table 1. The frame 12 is fixedly connected to the F-shaped blocks 31. An upper pressure plate 32 is slidably connected between the two facing F-shaped blocks 31. The upper pressure plate 32 is symmetrically distributed with a plurality of circular grooves, and the barbs are plugged into the inner sides of the corresponding circular grooves.

[0049] Specifically, when both ends of the color steel plate are located on top of the lower pressing plate 22, the lower pressing plate 22 rises, driving the color steel plate upward. When the top of the color steel plate contacts the upper pressing plate 32, the upper pressing plate 32 clamps the color steel plate. At this time, the barbs tend to move inwards of the circular groove, clamping the color steel plate more firmly. This can effectively prevent the cutting trajectory from deviating due to plate shaking, maintain the stability of the cutting process, and ensure that the processing accuracy of the fire-resistant air duct components meets the design requirements.

[0050] Reference Figure 5-Figure 7The rotating assembly 4 includes a rotating shaft 41 rotatably connected to the laser cutting table 1, and both ends of the rotating shaft 41 are limitedly slidably connected to a rotating rod 42, the rotating rod 42 is provided with an external thread, the rotating rod 42 is rotatably connected to the threaded hole, and the external thread section of the rotating rod 42 is threadedly connected to the threaded hole, and the two rotating rods 42 are limitedly slidably connected to a rotating gear 43, and the rotating gear 43 is meshed with the corresponding first gear 24.

[0051] Specifically, the rotating shaft 41 rotates, and the rotating shaft 41 is slidingly connected to the rotating rod 42 in a limited position, thereby driving the rotating rod 42 to rotate. The rotating rod 42 is slidingly connected to the rotating gear 43 in a limited position, thereby driving the rotating gear 43 to rotate. The rotating gear 43 drives the first gear 24 to rotate, thereby clamping the color steel plate. This prevents micro-movement of the plate caused by the impact force of the laser or the injection of auxiliary gas during the cutting process, ensures that the laser beam strictly cuts along the designed path, and avoids dimensional deviations caused by contour deviation. Especially when processing multiple sets of spliced ​​parts or complex geometric figures, the dimensional consistency of each component can be guaranteed.

[0052] Reference Figure 6 The reset assembly 5 includes a groove formed on the rotating rod 42 , the rotating shaft 41 is slidingly connected to the inner side of the groove, and a reset spring 51 is fixedly connected between the rotating shaft 41 and the inner wall of the groove.

[0053] Specifically, when the rotating rod 42 moves toward one end of the rotating shaft 41, the rotating shaft 41 slides inside the groove, compressing the reset spring 51, so that the external thread section of the rotating rod 42 abuts against the threaded hole. At this time, the rotating rod 42 rotates, driving the moving block 21 to move, and the color steel plate is stretched through the action of the lower pressure plate 22 and the upper pressure plate 32. It can effectively extend the internal stress of the plate, correct the warped and uneven shape to a flat state, provide a constant processing reference for laser cutting, and fundamentally avoid the focus position change caused by the undulation of the plate surface, so that the laser energy always acts accurately on the preset area. The flat plate surface ensures that the vertical distance between the laser focus and the material surface remains consistent, avoiding the attenuation or concentration of energy density due to surface undulations.

[0054] Reference Figure 8 The one-way rotating component 6 includes a one-way bearing fixedly mounted on the rotating rod 42, a one-way rotating gear 61 fixedly mounted on the one-way bearing, a first ring 62 rotatably connected to the inner wall of the movable groove, and a plurality of tooth grooves 63 distributed in a ring array on the first ring 62, and the one-way rotating gear 61 is meshed with the tooth grooves 63.

[0055] Specifically, when the rotating rod 42 rotates, it drives the one-way bearing to rotate, and under the action of the one-way bearing, it drives the one-way rotating gear 61 to rotate in one direction. That is, when the rotating rod 42 rotates forward, the moving block 21 moves and the one-way rotating gear 61 does not rotate. When the rotating rod 42 reverses, the moving block 21 resets, and the one-way rotating gear 61 rotates, and is meshed with the one-way rotating gear 61 through the tooth groove 63, driving the first ring 62 to rotate.

[0056] Reference Figures 9-11 When the locking cam 75 is unlocked, the locking cam 78 is unlocked and the locking cam 78 is unlocked, so that the master lock 71 can be unlocked.

[0057] When the first gear 24 is in the state of being meshed with the first gear 24, the first gear 24 is in the state of being meshed with the first gear 24. When the first gear 24 is in the state of being meshed with the first gear 24, the first gear 24 is in the state of being meshed with the first gear 24. The first gear 24 is in the state of being meshed with the first gear 24. The first gear 24 is in the state of being meshed with the first gear 24. The first gear 24 is in the state of being meshed with the first gear 24

[0058] Example 2, reference Figure 12 and Figure 13, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the stretching component also includes an extrusion assembly 8 installed on the upper pressing plate 32, and the extrusion assembly 8 is installed with a push-up assembly 9; the extrusion assembly 8 includes a conical block 81 fixedly connected to the rotating rod 42, an extrusion cylinder 82 is slidably connected to the upper pressing plate 32, an extrusion bent rod 83 is slidably connected to the extrusion cylinder 82, the extrusion bent rod 83 is slidably connected to the conical block 81, an L-shaped plate 84 is slidably connected to the extrusion bent rod 83, the L-shaped plate 84 is fixedly connected to the laser cutting table 1 tube, and an extrusion spring 85 is fixedly connected between the extrusion cylinder 82 and the extrusion bent rod 83.

[0059] Specifically, the extrusion cylinder 82 slides on the upper pressure plate 32, driving the extrusion bent rod 83 to move downward. Under the action of the L-shaped plate 84, the extrusion bent rod 83 can only move vertically up and down, squeezing the conical block 81. Under the action of the conical block 81, the rotating rod 42 moves into the threaded hole, so that the external thread section of the rotating rod 42 is connected to the internal thread of the threaded hole. At this time, the rotating rod 42 continues to rotate, which will drive the moving block 21 to move, thereby stretching the color steel plate. The flat plate reflects the laser in a more regular path, which can reduce the impact damage of the laser beam on the focusing lens and reflective lens in the cutting head and extend the lens replacement cycle. At the same time, the automatic focusing system does not need to frequently compensate for changes in the plate height, reducing the fatigue loss of the servo motor and driver, reducing the number of equipment fault alarms, and extending the continuous operation time of the equipment.

[0060] Reference Figure 13 The push-up assembly 9 includes a movable cavity opened on the upper pressure plate 32, and a second gear 91 is rotatably connected to the inside of the movable cavity. A second rack 92 is slidingly connected to one end of the inner side of the movable cavity, and a third rack 93 is slidingly connected to the other end of the inner side of the movable cavity. The second rack 92 and the third rack 93 are both meshed and connected with the second gear 91, and the opposite sides of the second rack 92 and the third rack 93 extend outside the movable cavity, and the extrusion cylinder 82 extends into the movable cavity away from one end of the extrusion bent rod 83 and is fixedly connected to the second rack 92.

[0061] Specifically, the color steel plate is driven upward by the lower pressure plate 22 and approaches the upper pressure plate 32. When the third rack 93 conflicts with the color steel plate, the third rack 93 is pushed upward, driving the second gear 91 to rotate, driving the second rack 92 to move downward, and driving the extrusion cylinder 82 to move.

[0062] Reference Figure 14 , also includes a drive assembly 10 installed on the laser cutting table 1, the drive assembly 10 includes a drive motor 101 fixedly connected to the laser cutting table 1, the output shaft of the drive motor 101 is fixedly connected to a drive wheel 102, the conical block 81 is fixedly connected to a connecting shaft 103, and a belt 104 is sleeved between the drive wheel 102 and the connecting shaft 103.

[0063] Specifically, the driving motor 101 is started to drive the driving wheel 102 to rotate, which in turn drives the connecting shaft 103 to rotate under the action of the belt 104, thereby driving the cone block 81 to rotate. The rest of the structure is the same as that of the first embodiment.

[0064] Based on Examples 1-2, the working principle of the present invention is as follows: the color steel plate to be cut is placed at one end of the laser cutting table 1, and the color steel plate is conveyed by the conveyor belt 11. The drive motor 101 is started to rotate forward, driving the rotating shaft 41 to rotate, and driving the rotating gear 43 to rotate through the rotating rod 42, and driving the lower pressure plate 22 to move upward through the first gear 24 and the spiral rib 25. Under the action of the upper pressure plate 32, the color steel plate is clamped. When the color steel plate collides with the upper pressure plate 32, the third rack 93 is pushed to move the extrusion bent rod 83 downward, and the conical block 81 is squeezed to move the rotating rod 42 toward the rotating shaft 41. The external thread section of the rotating rod 42 is threadedly connected to the threaded hole, so that the moving block 21 moves. At this time, the rotating gear 43 will not be engaged with the first gear 24, and the color steel plate is stretched. Start the drive motor 101 to reverse, drive the one-way rotating gear 61 to rotate, drive the first ring 62 to rotate, and then drive the sleeve 71 to rotate, so that the second ring 72 moves on the sleeve 71, and through the T-shaped pull rod 78, drive the rotating gear 43 to move, so that the rotating gear 43 re-engages with the first gear 24, and then the lower pressure plate 22 moves downward, driving the color steel plate to move downward, and the cut color steel plate is transported out through the conveyor belt 11.

[0065] Example 3, reference Figures 1-14 , as a third embodiment of the present invention, provides: a laser cutting production process for color steel raw materials used in the production of refractory air ducts, comprising the following steps:

[0066] S1: Place the color steel plate to be cut on one end of the laser cutting table 1 and convey the color steel plate through the conveyor belt 11;

[0067] S2: Start the driving motor 101 to rotate forward, drive the rotating shaft 41 to rotate, drive the rotating gear 43 to rotate through the rotating rod 42, drive the lower pressing plate 22 to move upward through the first gear 24 and the spiral rib 25, and clamp the color steel plate under the action of the upper pressing plate 32;

[0068] S3: When the color steel plate contacts the upper pressing plate 32, the third rack 93 is pushed, causing the extrusion bent rod 83 to move downward, squeezing the tapered block 81, causing the rotating rod 42 to move toward the rotating shaft 41. The external thread section of the rotating rod 42 is threadedly connected to the threaded hole, causing the moving block 21 to move. At this time, the rotating gear 43 will not be engaged with the first gear 24, stretching the color steel plate;

[0069] S4: Start the driving motor 101 to reverse, drive the one-way rotating gear 61 to rotate, drive the first ring 62 to rotate, and then drive the sleeve 71 to rotate, so that the second ring 72 moves on the sleeve 71, and through the T-shaped pull rod 78, drive the rotating gear 43 to move, so that the rotating gear 43 re-engages with the first gear 24, and then the lower pressure plate 22 moves downward, driving the color steel plate to move downward, and the cut color steel plate is transported out through the conveyor belt 11.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A laser cutting device for color steel raw materials used in the production of refractory air ducts, comprising a laser cutting table, two rollers symmetrically arranged at both ends of the laser cutting table, a conveyor belt interposed between the two rollers, a frame disposed on top of the laser cutting table, an electric push rod disposed on top of the frame, and a laser cutting head disposed at the output end of the electric push rod, characterized in that: Also included is a clamping unit disposed on the laser cutting table; The clamping unit includes a clamping component and a stretching component provided on the laser cutting table. The clamping component includes a lifting assembly and an upper pressing assembly provided on the laser cutting table. The stretching component includes a rotating assembly provided on the laser cutting table. The rotating assembly is provided with a reset assembly, a one-way rotation assembly and a pulling assembly. The clamping components are used to clamp and lift the two ends of the color steel plate, and the stretching components are used to stretch the color steel plate to adjust the flatness of the color steel plate; The lifting assembly includes two moving blocks symmetrically distributed on the laser cutting table, a movable groove is provided on the top of the moving block, a lower pressure plate is also provided on the top of the moving block, a first rack is provided on the inner side of the movable groove, a first gear is also provided on the inner side of the movable groove, a spiral ridge is provided on the first gear, the spiral ridge is meshed with the first rack, a guide rod is provided on the lower pressure plate, the guide rod is slidably connected to the moving block, a plurality of barbs are symmetrically distributed on the lower pressure plate, and a threaded hole connected to the inner side of the movable groove is provided on the moving block.

2. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 1 is characterized in that: The upper pressure assembly includes a plurality of F-shaped blocks symmetrically distributed on the laser cutting table. The frame is fixedly connected to the F-shaped blocks. An upper pressure plate is arranged between the two facing F-shaped blocks. The upper pressure plate is symmetrically distributed with a plurality of circular grooves, and the barbs are plugged into the inner sides of the corresponding circular grooves.

3. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 2 is characterized in that: The rotating assembly includes a rotating shaft arranged on the laser cutting table, rotating rods are arranged at both ends of the rotating shaft, external threads are arranged on the rotating rods, the rotating rods are rotatably connected to the threaded holes, the external thread sections of the rotating rods are threadedly connected to the threaded holes, and rotating gears are arranged on the two rotating rods, which are meshed and connected with the corresponding first gears.

4. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 3 is characterized in that: The reset assembly includes a groove arranged on the rotating rod, the rotating shaft is slidingly connected to the inner side of the groove, and a reset spring is arranged between the rotating shaft and the inner wall of the groove.

5. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 4 is characterized in that: The one-way rotation component includes a one-way bearing arranged on a rotating rod, a one-way rotation gear is arranged on the one-way bearing, a first ring is arranged on the inner wall of the movable groove, a plurality of tooth grooves are distributed in a ring array on the first ring, and the one-way rotation gear is meshed with the tooth grooves.

6. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 5, characterized in that: The pulling assembly includes a sleeve arranged on the first sleeve, a second sleeve arranged on the sleeve, a limiting rod arranged on the second sleeve, the limiting rod being fixedly connected to the inner wall of the movable groove, a pulling spring being further provided on the sleeve, one end of the pulling spring being rotatably connected to the sleeve, and the other end of the pulling spring being fixedly connected to the inner wall of the movable groove, a spiral groove being provided on the sleeve, and a straight groove communicating with the spiral groove being provided on the sleeve, rubber wedge blocks being provided on the inner walls at both ends of the spiral groove, a protrusion being provided on the inner side of the second sleeve, the protrusions being respectively slidably connected to the inner sides of the spiral groove and the straight groove, the protrusions being slidably connected to the inclined surface of the rubber wedge block, a T-shaped pulling rod being provided on the second sleeve, an annular groove being provided on the rotating gear, and the T-shaped pulling rod being limitedly slidably connected to the inner side of the annular groove.

7. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 6, characterized in that: The stretching component further includes an extrusion assembly provided on the upper pressing plate, and an upward pushing assembly is provided on the extrusion assembly; The extrusion assembly includes a conical block arranged on a rotating rod, an extrusion cylinder is arranged on an upper pressure plate, an extrusion bent rod is arranged on the extrusion cylinder, the extrusion bent rod is slidably connected to the conical block, an L-shaped plate is arranged on the extrusion bent rod, the L-shaped plate is fixedly connected to the laser cutting table tube, and an extrusion spring is arranged between the extrusion cylinder and the extrusion bent rod.

8. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 7, characterized in that: The push-up assembly includes an active cavity arranged on the upper pressure plate, a second gear is arranged on the inside of the active cavity, a second rack is arranged at one end of the inner side of the active cavity, and a third rack is arranged at the other end of the inner side of the active cavity. The second rack and the third rack are both meshed and connected with the second gear, and the opposite sides of the second rack and the third rack extend outside the active cavity. The extrusion cylinder extends into the active cavity away from one end of the extrusion bent rod and is fixedly connected to the second rack.

9. The laser cutting device for color steel raw materials used in the production of refractory air ducts according to claim 8, characterized in that: It also includes a drive assembly arranged on the laser cutting table, the drive assembly includes a drive motor arranged on the laser cutting table, the drive motor output shaft is provided with a drive wheel, the conical block is provided with a connecting shaft, and a belt is provided between the drive wheel and the connecting shaft.

10. A laser cutting production process for color steel raw materials used in the production of fire-resistant air ducts, applied to the laser cutting device for color steel raw materials used in the production of fire-resistant air ducts according to claim 9, characterized in that: The following steps are involved: S1: Place the color steel plate to be cut on one end of the laser cutting table and transport it through the conveyor belt; S2: Start the driving motor to rotate forward, drive the rotating shaft to rotate, drive the rotating gear to rotate through the rotating rod, drive the lower pressing plate to move upward through the first gear and the spiral rib, and clamp the color steel plate under the action of the upper pressing plate; S3: When the color steel plate contacts the upper pressing plate, the third rack is pushed to move the extrusion bent rod downward, squeezing the conical block to move the rotating rod toward the rotating axis. The external thread section of the rotating rod is threadedly connected with the threaded hole, causing the moving block to move. At this time, the rotating gear will not mesh with the first gear, stretching the color steel plate; S4: Start the driving motor to reverse, drive the one-way rotating gear to rotate, drive the first ring to rotate, and then drive the sleeve to rotate, so that the second ring moves on the sleeve, and through the T-shaped pull rod, drive the rotating gear to move, so that the rotating gear re-engages with the first gear, and then the lower pressure plate moves downward, driving the color steel plate to move downward, and the cut color steel plate is transported out through the conveyor belt.

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