A laser cutting machine

Abstract

The present application relates to the technical field of laser cutting, and discloses a laser cutting machine, which comprises a bed body, a moving cutting platform, a crossbeam, a laser cutting assembly and a driving mechanism, the driving mechanism drives the moving cutting platform to move along the front-back direction of the bed body, the crossbeam can move along the left-right direction of the bed body, and the laser cutting assembly can move along the left-right direction and the up-down direction of the crossbeam; further comprising two moving supports fixed with the bed body, the two moving supports are respectively located on the left and right sides of the bed body, and the upper surfaces of the two moving supports are all fixed with the moving cutting platform. Through the arrangement of the two moving supports fixed with the bed body and the moving cutting platform, the moving supports utilize a slidable first moving frame, a slidable second moving frame and a transmission assembly to realize the full-suspended movement of the moving cutting platform without increasing the volume of the bed body, so that the laser cutting machine is more compact.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a laser cutting machine. Background Technology

[0002] Existing laser sheet cutting machines generally consist of a base frame, a rack and pinion work platform, a crossbeam, and a laser cutting assembly. The rack and pinion work platform holds the sheet material to be cut. The crossbeam can reciprocate along the base frame, synchronously moving the laser cutting assembly mounted on it. The laser cutting assembly can move along the extension direction of the crossbeam and vertically. In other words, the laser cutting assembly and crossbeam work together to achieve multi-directional movement of the laser cutting assembly in all directions. The rack and pinion work platform is divided into fixed and mobile types. Existing mobile work platforms generally refer to single platforms that can move along the length of the base frame or two interchangeable platforms. A single mobile platform is typically driven by a motor that rotates a chain. A double interchangeable platform typically uses an inclined track and two sets of linked drive mechanisms to exchange between the two platforms. All of these movement methods require a certain length of the base frame, resulting in a large footprint for the entire laser cutting machine. This type of laser cutting machine is clearly unsuitable for spaces or factories with limited space.

[0003] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a laser cutting machine that, by adding a movable support to the basis of a traditional laser cutting machine, enables the movable cutting platform fixed to the movable support to move in a fully suspended manner without increasing the volume of the bed, thereby greatly improving the space utilization of the site.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A laser cutting machine includes a bed, a moving cutting platform, a crossbeam, a laser cutting assembly, and a drive mechanism. The drive mechanism drives the moving cutting platform to move along the front-to-back direction of the bed. The crossbeam can move along the left-to-right direction of the bed, and the laser cutting assembly can move along the left-to-right and up-down directions of the crossbeam. It also includes two movable supports fixedly connected to the bed, located on the left and right sides of the bed respectively. The upper surfaces of both movable supports are fixedly connected to the moving cutting platform. Each movable support includes a fixed shaft, a first movable frame, a movable shaft, a second movable frame, and a transmission mechanism. The moving assembly includes: a fixed shaft extending along the front-rear direction of the bed and fixedly connected to the upper surface of the bed; a first-section moving frame slidably connected to the fixed shaft and capable of reciprocating along the extension direction of the fixed shaft; a moving shaft fixedly mounted on the upper surface of the first-section moving frame; and a second-section moving frame slidably connected to the moving shaft and capable of reciprocating along the extension direction of the moving shaft. The transmission assembly is connected to the drive mechanism and is used to drive the first-section moving frame, the second-section moving frame mounted on the upper surface of the first-section moving frame, and the moving shaft to reciprocate back and forth, thereby causing the second-section moving frame to move synchronously.

[0007] Beneficial effects:

[0008] This invention provides a laser cutting machine that, based on a traditional laser cutting machine, additionally incorporates two movable supports fixed to the machine bed and a movable cutting platform. These supports utilize a slidable first-section movable frame, a slidable second-section movable frame, and a transmission assembly. Without increasing the machine bed's volume, the drive mechanism moves the first-section movable frame, the second-section movable frame, and the movable cutting platform forward for easy loading or unloading, and backward to position the movable cutting platform at the cutting station. This achieves fully suspended movement of the movable cutting platform and changes the traditional method of the movable platform moving along the length of the machine bed, allowing it to move along the width of the machine bed. This significantly improves space utilization and makes the laser cutting machine more compact. Attached Figure Description

[0009] Figure 1 A schematic diagram of a laser cutting machine in the cutting state. Figure 1 .

[0010] Figure 2 This is a schematic diagram of a laser cutting machine in the loading / unloading state. Figure 1 .

[0011] Figure 3 A schematic diagram of a laser cutting machine in the cutting state. Figure 2 .

[0012] Figure 4This is a cross-sectional view of a laser cutting machine in the cutting state.

[0013] Figure 5 This is a cross-sectional view of a laser cutting machine in the loading / unloading state.

[0014] Figure 6 This is a schematic diagram of the movable support located on the left side of the bed when it is in the cutting state.

[0015] Figure 7 This is a schematic diagram of the movable support located on the left side of the bed when it is in the loading / unloading position.

[0016] Figure 8 for Figure 6 A structural diagram with the side panels of the first and second movable frames hidden.

[0017] Figure 9 A schematic diagram of a partial structure of a laser cutting machine. Figure 1 .

[0018] Figure 10 A schematic diagram of a partial structure of a laser cutting machine. Figure 2 .

[0019] Figure 11 This is a schematic diagram of the drive mechanism.

[0020] Figure 12 This is a structural diagram of the bed.

[0021] Figure 13 for Figure 12 Enlarged view of part A in the middle.

[0022] Figure 14 for Figure 12 Enlarged view of section B in the middle.

[0023] Figure 15 for Figure 1 Enlarged view of section C.

[0024] Figure 16 This is a schematic diagram of the sheet metal clamping mechanism.

[0025] Explanation of key component symbols:

[0026] 1-Bed, 11-Limit switch, 12-Buffer, 13-First clearance hole, 14-Second clearance hole;

[0027] 2-Moving support, 21-Fixed shaft, 211-Fixed slider, 212-Fixed buffer rubber, 22-First stage moving frame, 221-First bearing auxiliary mounting seat, 222-First bearing, 23-Moving shaft, 231-Moving slider, 232-Moving buffer rubber, 24-Second stage moving frame, 241-Platform fixing plate, 242-Second bearing auxiliary mounting seat, 243-Second bearing, 25-Transmission assembly, 251-Fixed rack, 252-Gear mounting seat, 253-Transmission gear, 254-Passive rack, 255-Rack adjusting block, 256-Top threaded hole;

[0028] 3-Mobile cutting platform;

[0029] 4-Crossbeam;

[0030] 5-Laser cutting components;

[0031] 6-Drive mechanism, 601-Power motor, 602-Transmission shaft, 603-Sprocket seat, 604-Drive sprocket, 605-Driven sprocket, 606-Chain, 607-Adjusting shaft, 6071-Insertion hole, 608-Adjusting screw, 609-Adjusting nut, 610-Locking screw, 611-Locking nut, 612-Platform rotation clamping assembly;

[0032] 7-Sheet pressing mechanism, 71-Installation platform, 72-Upper positioning plate, 73-Lower positioning plate, 74-Support plate, 75-Sheet rotating pressing assembly, 76-Bearing ball bearings. Detailed Implementation

[0033] This invention provides a laser cutting machine. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the scope of protection of the invention.

[0034] Please see Figures 1-3 In this embodiment, the length direction of the bed 1 is the left-right direction and the X-axis direction, the width direction of the bed 1 is the front-back direction and the Y-axis direction, the height direction of the laser cutting component 5 is the up-down direction and the Z-axis direction, the front-back direction of the moving cutting platform 3 is the G-axis direction, and the drive mechanism 6 is located behind the bed 1 for explanation.

[0035] Please see Figures 1-5This invention provides a laser cutting machine, including a bed 1, a movable cutting platform 3, a crossbeam 4, a laser cutting assembly 5, and a drive mechanism 6. The drive mechanism 6 drives the movable cutting platform 3 to move along the front-to-back direction of the bed 1. The crossbeam 4 can move along the left-to-right direction of the bed 1. The laser cutting assembly 5 can move along the left-to-right and up-to-down directions of the crossbeam 4. It also includes two movable supports 2 fixedly connected to the bed 1, located on the left and right sides of the bed 1 respectively. The upper surfaces of both movable supports 2 are fixedly connected to the movable cutting platform 3. Please refer to [link to previous text]. Figure 4 and Figure 5 Both movable supports 2 include a fixed shaft 21, a first movable frame 22, a movable shaft 23, a second movable frame 24, and a transmission assembly 25. The fixed shaft 21 extends along the front-rear direction of the bed 1 and is fixedly connected to the upper surface of the bed 1. The first movable frame 22 is slidably connected to the fixed shaft 21 and can reciprocate along the extension direction of the fixed shaft 21. The movable shaft 23 is fixed to the upper surface of the first movable frame 22. The second movable frame 24 is slidably connected to the movable shaft 23 and can reciprocate along the extension direction of the movable shaft 23. The transmission assembly 25 is connected to the drive mechanism 6 and is used to drive the first movable frame 22 and the second movable frame 24 and the movable shaft 23 on the upper surface of the first movable frame 22 to reciprocate, thereby driving the second movable frame 24 to move synchronously.

[0036] In practical applications, the drive mechanism 6 operates, driving a section of the moving frame 22 to move forward along the extension direction of the fixed shaft 21. This causes the moving shaft 23, which is located on the upper surface of the section of the moving frame 22, and the second section of the moving frame 24 to move forward synchronously relative to the bed 1. At the same time, due to the transmission component 25, the second section of the moving frame 24 can continue to move forward along the extension direction of the moving shaft 23, achieving two-stage displacement. That is, the moving cutting platform 3, which is fixed to the upper surface of the second section of the moving frame 24, achieves two-stage forward displacement, so that the entire moving cutting platform 3 is completely located in front of the bed 1, achieving a fully suspended movement with the bed 1. This allows for unloading or loading the cut plate onto the upper surface of the moving cutting platform 3. Subsequently, the drive mechanism 6 runs again, driving the first section of the moving frame 22 to move backward along the extension direction of the fixed shaft 21. The transmission component 25 drives the second section of the moving frame 24 to move backward synchronously along the extension direction of the moving shaft 23, thereby resetting the first section of the moving frame 22 and the second section of the moving frame 24. That is, the moving cutting platform 3, which is fixed to the upper surface of the second section of the moving frame 24, moves to the cutting station.

[0037] Specifically, a motor can be installed on the left or right side of the crossbeam 4 to move the crossbeam 4, and helical racks can be installed in the front and back directions of the bed 1. The crossbeam 4 can be driven to move back and forth by the meshing of the gear and the helical rack at the output end of the motor.

[0038] Please see Figure 4 and Figure 5 , Figures 6-8 In some embodiments, the transmission assembly 25 includes a fixed rack 251, a transmission gear 253, and a driven rack 254. The fixed rack 251 is fixed to the upper surface of the bed 1. The transmission gear 253 is rotatably mounted on the outer wall of the first movable frame 22 via a gear mounting seat 252. The driven rack 254 is fixed to the outer wall of the second movable frame 24. The fixed rack 251 and the driven rack 254 are arranged vertically and mesh with the transmission gear 253 respectively. The drive mechanism 6 is fixedly connected to the first movable frame 22, the fixed rack 251 is fixedly connected to the bed 1, and the fixed shaft 21 is fixedly connected to the bed 1. The fixed shaft 21 is slidably connected to the first movable frame 22. Therefore, the drive mechanism 6 can drive the first movable frame 22 to move forward or backward relative to the bed 1, the fixed rack 251, and the fixed shaft 21. Since the moving shaft 23 is fixedly connected to the first moving frame 22 and slidably connected to the second moving frame 24, the second moving frame 24 can move forward or backward relative to the moving shaft 23. When the drive mechanism 6 drives the first moving frame 22 to move forward relative to the fixed rack 251, the transmission gear 253 set on the outer wall of the first moving frame 22 moves forward synchronously along the extension direction of the fixed rack 251. At this time, the transmission gear 253 rotates, providing a power source for the driven rack 254 to drive the second moving frame 24 to move forward, so that the second moving frame 24 can continue to move forward relative to the moving shaft 23. The above structure is simple and cleverly utilizes the action and reaction forces of the rack and gear to achieve a longer movement of the second moving frame 24.

[0039] Please see Figure 4 , Figure 6 In some embodiments, when the mobile cutting platform 3 is in the cutting position, the front and rear sidewalls of the first-section mobile frame 22 and the second-section mobile frame 24 are flush with each other; the fixed rack 251 is located in front of the driven rack 254, the transmission gear 253 meshes with the rear end of the fixed rack 251, and the transmission gear 253 meshes with the front end of the driven rack 254; please refer to Figure 5 and Figure 7When the mobile cutting platform 3 is in the loading or unloading position, the two-section mobile frame 24 is located in front of the one-section mobile frame 22; the fixed rack 251 is located behind the driven rack 254; the transmission gear 253 meshes with the front end of the fixed rack 251, and the transmission gear 253 meshes with the rear end of the driven rack 254. Based on the above state limitations, the travel distance of the two-section mobile frame 24 is twice that of the one-section mobile frame 22. In this embodiment, the travel distance of the one-section mobile frame 22 is 870mm, and the travel distance of the two-section mobile frame 24 is 1740mm. That is, the travel distance of the one-section mobile frame 22 is half the width of the mobile cutting platform 3, while the travel distance of the two-section mobile frame 24 is the entire width of the mobile cutting platform 3. This allows the entire mobile cutting platform 3 to be moved to the front of the bed 1, facilitating loading or unloading. Moreover, when the mobile cutting platform 3 is in the cutting station, the first moving frame 22 and the second moving frame 24 are completely submerged in the bed 1, and no part protrudes from the bed 1. Compared with the traditional mobile platform which has requirements on the length of the bed 1, the present invention does not increase the length of the bed 1, but can still realize the movement of the mobile cutting platform 3.

[0040] Please see Figures 6-10 In some embodiments, a platform fixing plate 241 is provided on the outer side wall of the two-section movable frame 24, and a limit switch 11 is provided on the inner side wall of the bed 1. Two limit switches 11 are provided, positioned one in front of the other, and are used to sense the front or rear side wall of the platform fixing plate 241 on the same side. In this invention, both movable supports 2 are provided with the platform fixing plate 241, and only two limit switches 11 are provided. These two limit switches 11 are used to sense the platform fixing plate 241 on either side. This embodiment shows that a limit switch 11 is provided on the left inner wall of the bed 1, that is, the limit switch 11 is used to sense the platform fixing plate 241 located on the left movable support 2. In practical applications, when the two-section moving frame 24 moves the platform fixing plate 241 fixed to it to the foremost position, the front side wall of the platform fixing plate 241 contacts the limit switch 11 located in front, indicating that the two-section moving frame 24 and the moving cutting platform 3 have moved into position; when the two-section moving frame 24 moves the platform fixing plate 241 fixed to it to the rearmost position, the rear side wall of the platform fixing plate 241 contacts the limit switch 11 located behind, indicating that the two-section moving frame 24 and the moving cutting platform 3 have moved into position (i.e., are in the cutting station). The limit switch 11 is electrically connected to the control mechanism, and through signal transmission, it can drive the control mechanism to control the start and stop of components such as the drive mechanism 6, the crossbeam 4, the laser cutting assembly 5, and the plate clamping mechanism 7.

[0041] Please see Figure 9 and Figure 10 In some embodiments, the inner sidewall of the bed 1 is provided with buffers 12, and there are four buffers 12, which are respectively located at the four corners of the bed 1. The two buffers 12 arranged at the front and rear are respectively used to abut against the front or rear sidewall of the platform fixing plate 241 on the same side. Specifically, each movable support 2 corresponds to two buffers 12, that is, two movable supports 2 correspond to four buffers 12, and the two buffers 12 arranged at the front and rear are used to abut against the front or rear sidewall of the platform fixing plate 241 on the left or right side. In practical applications, when the two-section moving frame 24 and the moving cutting platform 3 move to the foremost position, the two front buffers 12 abut against the front sidewalls of the corresponding platform fixing plates 241; when the two-section moving frame 24 and the moving cutting platform 3 move to the rearmost position, the two rear buffers 12 abut against the rear sidewalls of the corresponding platform fixing plates 241. Through the above settings, hard collisions with the platform fixing plates 241 (i.e., the two-section moving frame 24 and the moving cutting platform 3) can be avoided, thus mitigating impact and providing protection.

[0042] Please see Figures 6-8 In some embodiments, rack adjusting blocks 255 are provided on the outer side walls of the two-section movable frame 24. Two rack adjusting blocks 255 are provided on each movable support 2, arranged one behind the other, both positioned above the passive rack 254. Each rack adjusting block 255 has a threaded hole 256 penetrating its upper and lower side walls. A threaded screw (not shown in the figure) is threaded into the threaded hole 256, and the end of the threaded screw abuts against the upper surface of the passive rack 254. The two threaded screws are screwed into the corresponding threaded holes 256, causing them to abut against the upper surface of the passive rack 254. This prevents the passive rack 254 from being lifted by the transmission gear 253 when it meshes with the transmission gear 253, thus ensuring the meshing degree between the passive rack 254 and the transmission gear 253 and ensuring the stable movement of the two-section movable frame 24.

[0043] Please see Figures 6-8In some embodiments, a fixed slider 211 is slidably disposed on the fixed shaft 21, and the upper surface of the fixed slider 211 is fixedly connected to the top of the inner cavity of the first segment of the movable frame 22; a movable slider 231 is slidably disposed on the movable shaft 23, and the upper surface of the movable slider 231 is fixedly connected to the top of the inner cavity of the second segment of the movable frame 24. Specifically, multiple fixed sliders 211 and multiple movable sliders 231 are provided, with multiple fixed sliders 211 slidably connected to the fixed shaft 21 and multiple movable sliders 231 slidably connected to the movable shaft 23. The arrangement of the fixed sliders 211 and the movable sliders 231 can assist the first segment of the movable frame 22 and the second segment of the movable frame 24 to move smoothly forward or backward.

[0044] Please see Figures 6-8 In some embodiments, the front and rear ends of the fixed shaft 21 are respectively provided with fixed buffer adhesive 212, and the two fixed buffer adhesives 212 are respectively used to abut against the front sidewall or the rear sidewall of the fixed slider 211. Specifically, when the front sidewall of the fixed slider 211 located at the foremost end abuts against the rear sidewall of the fixed buffer adhesive 212 located in front, it indicates that a section of the moving frame 22 has moved to the foremost end; when the rear sidewall of the fixed slider 211 located at the rearmost end abuts against the front sidewall of the fixed buffer adhesive 212 located behind, it indicates that a section of the moving frame 22 has moved to the rearmost end. The front and rear ends of the moving shaft 23 are respectively provided with moving buffer adhesive 232, and the two moving buffer adhesives 232 are respectively used to abut against the front sidewall or the rear sidewall of the moving slider 231. Similarly, when the front side wall of the foremost movable slider 231 abuts against the rear side wall of the front movable buffer 232, it indicates that the two-section movable frame 24 has moved to the foremost position; when the rear side wall of the rearmost movable slider 231 abuts against the front side wall of the rear movable buffer 232, it indicates that the two-section movable frame 24 has moved to the rearmost position.

[0045] Please see Figure 8 In some embodiments, a first bearing auxiliary mounting seat 221 is provided in the inner cavity of the first movable frame 22, and a rotatable first bearing 222 is provided on the first bearing auxiliary mounting seat 221. The first bearing 222 abuts against the top wall of the inner cavity of the first movable frame 22. A second bearing auxiliary mounting seat 242 is provided in the inner cavity of the second movable frame 24, and a rotatable second bearing 243 is provided on the second bearing auxiliary mounting seat 242. The second bearing 243 abuts against the top wall of the inner cavity of the second movable frame 24. When the first movable frame 22 moves, it drives the first bearing 222 to rotate, which can reduce the friction force when the first movable frame 22 moves. Similarly, when the second movable frame 24 moves, it drives the second bearing 243 to move, which can reduce the friction force when the second movable frame 24 moves.

[0046] Please see Figures 11-14 In some embodiments, the drive mechanism 6 includes a power motor 601, a transmission shaft 602, a sprocket seat 603, a drive sprocket 604, a driven sprocket 605, an adjusting shaft 607, a chain 606, and a platform rotation and clamping assembly 612. The output end of the power motor 601 is connected to the transmission shaft 602, which extends along the left-right direction of the bed 1. Two sprocket seats 603, two drive sprockets 604, two driven sprockets 605, two adjusting shafts 607, and two chains 606 are each provided. The two sprocket seats 603 are fixed to the rear sidewall of the bed 1, and the two drive sprockets 604 are respectively connected to the corresponding sprockets. The seat 603 is rotatably connected, and the two ends of the transmission shaft 602 are respectively connected to the corresponding sprocket seat 603 and the driving sprocket 604. The two adjusting shafts 607 pass through the center of the corresponding driven sprockets 605. The two driven sprockets 605 are located in front of the corresponding driving sprockets 604, and the chain 606 is wound between the driving sprockets 604 and the driven sprockets 605 arranged in front and behind. The two chains 606 are respectively fixed to the left or right side wall of the two movable frames 22. The platform rotation clamping assembly 612 is disposed on the inner side wall of the bed 1 and is used to clamp the platform fixing plate 241 in the cutting operation. Specifically, the platform rotation clamping assembly 612 is a rotary cylinder.

[0047] In practical applications, the power motor 601 rotates forward, driving the transmission shaft 602 to rotate. The transmission shaft 602 drives the drive sprockets 604 located at both ends of the transmission shaft 602 to rotate synchronously. Due to the setting of the chain 606, the rotational power can be transmitted to the chain 606 and the driven sprocket 605. When the chain 606 moves forward, the chain 606 will drive the first section of the moving frame 22, the second section of the moving frame 24 and the moving cutting platform 3 to move forward synchronously. When the first section of the moving frame 22 and the second section of the moving frame 24 drive the moving cutting platform 3 to the front end, the power motor 601 stops running. At this time, the material can be unloaded or the plate to be cut can be loaded onto the moving cutting platform 3. After the material is loaded, the power motor 601 reverses, driving the transmission shaft 602, the drive sprocket 604, and the driven sprocket 605 to rotate. This causes the chain 606, the first moving frame 22, the second moving frame 24, and the moving cutting platform 3 to move backward until the first moving frame 22 and the second moving frame 24 move the moving cutting platform 3 to the last end (i.e., to the cutting station). At this point, the control mechanism drives the platform rotation clamping assembly 612 to operate, clamping and fixing the platform fixing plate 241 (equivalent to clamping and fixing the moving cutting platform 3). This provides a locking force to the moving support 2 and the moving cutting platform 3, preventing the plate material placed on the moving cutting platform 3 from shifting due to the displacement of the moving support 2 during the laser cutting process. This ensures the cutting accuracy of the plate material.

[0048] Please see Figure 13 and Figure 14 In some embodiments, the drive mechanism 6 further includes an adjusting screw 608, an adjusting nut 609, a locking screw 610, and a locking nut 611; the driven sprocket 605 is rotatably connected to the corresponding adjusting shaft 607; the adjusting screw 608 is perpendicular to the adjusting shaft 607 and passes through the front and rear side walls of the adjusting shaft 607; both ends of the adjusting screw 608 are movably connected to the bed 1; the adjusting screw 608 is threadedly connected to the adjusting shaft 607; the front end of the adjusting screw 608 is fixedly connected to the adjusting nut 609; the rear side of the adjusting nut 609 is used to abut against the front side of the bed 1; the rear end of the locking screw 610 passes through the front side of the bed 1 and abuts against the front side of the adjusting shaft 607; the locking screw 610 is threadedly connected to the bed 1; and the front end of the locking screw 610 is fixedly connected to the locking nut 611.

[0049] In practical applications, when it is necessary to increase the tension of chain 606, rotating the adjusting nut 609 causes the adjusting screw 608 to rotate, which in turn moves the adjusting shaft 607, which is threadedly connected to the adjusting screw 608, forward (i.e., towards the adjusting nut 609), thereby tightening chain 606. However, since the adjusting screw 608 is movably connected to the bed 1, it is necessary to rotate the locking nut 611 to cause the locking screw 610 to rotate. Because the locking screw 610 is threadedly connected to the bed 1... Therefore, the locking screw 610 and locking nut 611 will move forward relative to the bed 1 until the rear end (end) of the locking screw 610 abuts against the front side of the adjusting shaft 607. The rear end (end) of the locking screw 610 "tightens" the adjusting shaft 607, thereby limiting the adjusting shaft 607 in the forward direction. The adjusting screw 608 and adjusting nut 609 limit the adjusting shaft 607 in the rear direction. Through their cooperation, the positions of the adjusting shaft 607, the driven sprocket 605 on the adjusting shaft 607, and the chain 606 on the sprocket are locked.

[0050] Please see Figure 13 and Figure 14 In some embodiments, the adjusting shaft 607 has an insertion hole 6071, and the rear end of the locking screw 610 is located in the insertion hole 6071. The locking screw 610 is threadedly connected to the bed 1. Since the bed 1 is fixed to the ground, when the locking nut 611 is rotated, the locking screw 610 will move, and the rear end (end) of the locking screw 610 will be inserted into the insertion hole 6071, preventing the forward-moving adjusting shaft 607 from continuing to move forward. This, in conjunction with the adjusting screw 608, locks the position of the adjusting shaft 607 in the front-rear direction.

[0051] Please see Figure 13 and Figure 14 In some embodiments, the bed 1 has a first clearance hole 13 and a second clearance hole 14 for accommodating the driven sprocket 605. The line connecting the first clearance hole 13 and the second clearance hole 14 is parallel to the adjusting screw 608 and the locking screw 610. The diameter of the driven sprocket 605 is larger than the diameter of the adjusting shaft 607, therefore the first clearance hole 13 and the second clearance hole 14 are required to provide clearance space for the movement of the driven sprocket 605.

[0052] Please see Figures 1-3 In some embodiments, the laser cutting machine further includes a sheet metal clamping mechanism 7, wherein multiple sheet metal clamping mechanisms 7 are equally spaced along the left-right direction of the movable cutting platform 3, and all multiple sheet metal clamping mechanisms 7 are located on the upper surface in front of the movable cutting platform 3; see also Figure 15 and Figure 16Each of the multiple sheet metal clamping mechanisms 7 includes a mounting platform 71 and a sheet metal rotary clamping assembly 75. The lower surface of the mounting platform 71 is fixedly connected to the upper surface of the movable cutting platform 3. A support plate 74 is also provided on the lower surface of the mounting platform 71. The cylinder portion of the sheet metal rotary clamping assembly 75 is fixedly connected to the support plate 74. The output end of the sheet metal rotary clamping assembly 75 extends upward and penetrates the upper and lower side walls of the support plate 74 and the mounting platform 71. The upper surface of the support plate 74 is used to support the edge of the sheet metal to be cut, and the sheet metal rotary clamping assembly 75 is used to clamp the sheet metal to be cut located on the upper surface of the support plate 74. In this embodiment, the sheet metal rotary clamping assembly 75 is a rotary cylinder. During loading, the sheet material to be cut is placed on the upper surface of the movable cutting platform 3 from front to back. The front edge of the sheet material is supported on the upper surface of the support plate 74. At this time, the output end of the sheet material rotation and clamping assembly 75 rotates to the upper surface of the mounting platform 71 to provide clearance for the loading of the sheet material to be cut. After the sheet material is loaded, the sheet material rotation and clamping assembly 75 is driven to operate, so that the output end of the sheet material rotation and clamping assembly 75 rotates 90° and its output end is located above the support plate 74 and the sheet material. The output end presses downward until the sheet material is pressed firmly onto the support plate 74. Other sheet material clamping mechanisms 7 operate simultaneously to quickly clamp and fix the front edge of the sheet material, thus avoiding the problem of the sheet material moving backward and the displacement during laser cutting affecting the cutting accuracy.

[0053] Please see Figure 15 and Figure 16 In some embodiments, the rear sidewall of the mounting platform 71 is provided with an upper positioning plate 72 and a lower positioning plate 73. The upper positioning plate 72 and the lower positioning plate 73 are respectively positioned vertically to the mounting platform 71, and both are used to abut against the edge of the material to be cut. The upper positioning plate 72 and the lower positioning plate 73 are used to achieve the positioning and limiting of the material edge.

[0054] Please see Figure 16 In some embodiments, both the upper positioning plate 72 and the lower positioning plate 73 are integrally bent into shape with the mounting platform 71. The upper positioning plate 72 is formed by cutting at the corresponding position on the mounting platform 71 and bending it upwards using a bending machine. Similarly, the lower positioning plate 73 is formed by bending it downwards using a bending machine. The structure is simple, easy to manufacture, and the integrally formed upper positioning plate 72, lower positioning plate 73, and mounting platform 71 have better structural rigidity.

[0055] Please see Figure 15 and Figure 16In some embodiments, the upper surface of the mounting platform 71 is provided with load-bearing ball bearings 76, which are located in front of the plate rotation clamping assembly 75. The plates are fed from front to back, and the load-bearing ball bearings 76 can protect the plate rotation clamping assembly 75, preventing the plates from colliding with and damaging it. Furthermore, the load-bearing ball bearings 76 can reduce friction during plate feeding.

[0056] In summary, this invention, by adding two movable supports 2 fixedly connected to the bed 1 and the movable cutting platform 3 to the traditional laser cutting machine, utilizes a slidable first movable frame 22, a slidable second movable frame 24, and a transmission assembly 25. Without increasing the volume of the bed 1, the drive mechanism 6 moves the first movable frame 22, the second movable frame 24, and the movable cutting platform 3 forward for easy loading or unloading, and backward to position the movable cutting platform 3 at the cutting station, achieving fully suspended movement of the movable cutting platform 3. Furthermore, it changes the traditional method of the movable platform moving along the length of the bed 1, allowing the movable cutting platform 3 to move along the width of the bed 1, greatly improving space utilization and making the laser cutting machine more compact. By setting up a power motor 601, a drive shaft 602, a drive sprocket 604, a driven sprocket 605, and a chain 606, the two movable supports 2 can be moved forward or backward synchronously, improving the linkage. By setting up a platform rotation clamping assembly 612, the movable support 2 located at the cutting station is clamped and locked to further ensure the cutting accuracy of the plate material on the movable cutting platform 3 located on the movable support 2. An adjusting shaft 607, adjusting screw 608, adjusting nut 609, locking screw 610, and locking nut 611 are set up to adjust the tension of the two chains 606, ensuring the movement accuracy of the movable support 2 and the movable cutting platform 3. Multiple plate clamping mechanisms 7 are set up, utilizing the rotation and extension of the output end of the plate rotation clamping assembly 75 to clamp the edge of the plate material on the upper surface of the movable cutting plate, ensuring that the plate material does not shift during the movement and cutting process, thereby ensuring the accuracy of the laser cutting assembly 5 in cutting the plate material.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A laser cutting machine, comprising a bed, a movable cutting platform, a crossbeam, a laser cutting assembly, and a drive mechanism, wherein the drive mechanism drives the movable cutting platform to move along the front-back direction of the bed, the crossbeam is movable along the front-back direction of the bed, and the laser cutting assembly is movable along the left-right and up-down directions of the crossbeam; characterized in that, It also includes two movable supports fixedly connected to the bed, the two movable supports being located on the left and right sides of the bed respectively, and the upper surfaces of the two movable supports being fixedly connected to the movable cutting platform; each of the two movable supports includes a fixed shaft, a first movable frame, a movable shaft, a second movable frame, and a transmission assembly; the fixed shaft extends along the front-rear direction of the bed and is fixedly connected to the upper surface of the bed, a fixed slider is slidably mounted on the fixed shaft, the upper surface of the fixed slider is fixedly connected to the top of the inner cavity of the first movable frame, and multiple fixed sliders are provided, all of which are slidably connected to the fixed shaft; fixed buffer rubber is provided at both the front and rear ends of the fixed shaft, and the two fixed buffer rubbers are respectively used to abut against the front or rear sidewall of the fixed slider; The movable frame is slidably connected to the fixed shaft and can reciprocate along the extension direction of the fixed shaft; the movable shaft is fixed to the upper surface of the movable frame, and a movable slider is slidably disposed on the movable shaft. The upper surface of the movable slider is fixedly connected to the top of the inner cavity of the two movable frames. Multiple movable sliders are provided, and all multiple movable sliders are slidably connected to the movable shaft; movable buffer rubber is provided at the front and rear ends of the movable shaft, and two movable buffer rubbers are respectively used to abut against the front or rear sidewall of the movable slider. The two-section moving frame is slidably connected to the moving shaft and can reciprocate along the extension direction of the moving shaft; the transmission component is connected to the driving mechanism and is used to drive the two-section moving frame to move synchronously when the first-section moving frame and the two-section moving frame and the moving shaft disposed on the upper surface of the first-section moving frame reciprocate.

2. The laser cutting machine according to claim 1, characterized in that, The transmission assembly includes a fixed rack, a transmission gear, and a driven rack; the fixed rack is fixed to the upper surface of the bed, the transmission gear is rotatably mounted on the outer side wall of the first section of the moving frame via a gear mounting seat, and the driven rack is fixed to the outer side wall of the second section of the moving frame. The fixed rack and the driven rack are arranged vertically, and the fixed rack and the driven rack mesh with the transmission gear respectively.

3. The laser cutting machine according to claim 2, characterized in that, When the mobile cutting platform is in the cutting station, the front and rear side walls of the first and second mobile frames are flush with each other; the fixed rack is located in front of the driven rack, the transmission gear meshes with the rear end of the fixed rack, and the transmission gear meshes with the front end of the driven rack; when the mobile cutting platform is in the loading or unloading station, the second mobile frame is located in front of the first mobile frame. The fixed rack is located behind the driven rack, the transmission gear meshes with the front end of the fixed rack, and the transmission gear meshes with the rear end of the driven rack.

4. The laser cutting machine according to claim 2, characterized in that, A platform fixing plate is provided on the outer side wall of the two-section movable frame, and a limit switch is provided on the inner side wall of the bed. There are two limit switches, which are arranged one in front of the other. The two limit switches are used to sense the front or rear side wall of the platform fixing plate on the same side.

5. The laser cutting machine according to claim 4, characterized in that, The drive mechanism includes a power motor, a transmission shaft, a sprocket seat, a driving sprocket, a driven sprocket, an adjusting shaft, a chain, and a platform rotation and clamping assembly. The output end of the power motor is connected to the transmission shaft, which extends along the left-right direction of the bed. Two sprocket seats, two driving sprockets, two driven sprockets, two adjusting shafts, and two chains are each provided. Two sprocket seats are fixed to the rear side wall of the bed. Two driving sprockets are rotatably connected to their respective sprocket seats. Both ends of the transmission shaft are connected to their respective sprocket seats and driving sprockets. Two adjusting shafts pass through the center of their respective driven sprockets. Two driven sprockets are located in front of their respective driving sprockets, and the chain is wound between the driving and driven sprockets. Two chains are fixed to the left or right side walls of the two movable frames. The platform rotation and clamping assembly is located on the inner side wall of the bed and is used to clamp the platform fixing plate.

6. The laser cutting machine according to claim 5, characterized in that, The drive mechanism further includes an adjusting screw, an adjusting nut, a locking screw, and a locking nut; the driven sprocket is rotatably connected to the corresponding adjusting shaft; the adjusting screw is perpendicular to the adjusting shaft and passes through the front and rear side walls of the adjusting shaft; both ends of the adjusting screw are movably connected to the bed; the adjusting screw is threadedly connected to the adjusting shaft; the front end of the adjusting screw is fixedly connected to the adjusting nut; the rear side of the adjusting nut is used to abut against the front side of the bed; the rear end of the locking screw passes through the front side of the bed and abuts against the front side of the adjusting shaft; the locking screw is threadedly connected to the bed; and the front end of the locking screw is fixedly connected to the locking nut.

7. The laser cutting machine according to claim 6, characterized in that, The adjusting shaft has an insertion hole, and the rear end of the locking screw is located in the insertion hole.

8. The laser cutting machine according to claim 1, characterized in that, It also includes a plate clamping mechanism, wherein multiple plate clamping mechanisms are equally spaced along the left and right directions of the mobile cutting platform, and all of the multiple plate clamping mechanisms are located on the upper surface in front of the mobile cutting platform; each of the multiple plate clamping mechanisms includes a mounting platform and a plate rotating clamping assembly, the lower surface of the mounting platform is fixedly connected to the upper surface of the mobile cutting platform, and a support plate is also provided on the lower surface of the mounting platform; the cylinder part of the plate rotating clamping assembly is fixedly connected to the support plate; the output end of the plate rotating clamping assembly extends upward and penetrates the upper and lower side walls of the support plate and the mounting platform; the upper surface of the support plate is used to support the edge of the plate to be cut; and the plate rotating clamping assembly is used to clamp the plate to be cut located on the upper surface of the support plate.

9. The laser cutting machine according to claim 8, characterized in that, The rear sidewall of the installation platform is provided with an upper positioning plate and a lower positioning plate. The upper positioning plate and the lower positioning plate are respectively set vertically to the installation platform. The upper positioning plate and the lower positioning plate are used to abut against the edge of the material to be cut.

10. The laser cutting machine according to claim 8, characterized in that, The upper surface of the installation platform is provided with load-bearing balls, which are located in front of the plate rotation and clamping assembly.

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