Acrylic carving machine

Abstract

This application discloses an acrylic engraving machine, belonging to the field of laser processing technology. The key technical features include a frame, a gantry structure, and a laser head. The gantry structure is connected to the frame, and the laser head is connected to the gantry structure. A clamping device is connected to the frame for clamping acrylic sheets. It also includes a lifting device, a reversing device, and a reset push-pull device. The lifting device drives multiple lifting screws to rotate synchronously via a drive unit, causing the lifting block to move the clamping device up and down. The reversing device uses gears and racks to rotate the clamping device. The reset push-pull device controls the extension and retraction of a telescopic rod to misalign the gears and racks. Furthermore, it includes the specific structure of the reset push-pull device and various adjustment mechanisms. This application achieves the technical effect of conveniently clamping, lifting, and reversing acrylic sheets, improving the efficiency and precision of acrylic sheet engraving.

Description

Technical Field

[0001] This application relates to the field of laser processing technology, and in particular to an acrylic engraving machine. Background Technology

[0002] In the field of laser processing technology, laser engraving has gradually emerged due to its advantages such as high precision and high efficiency, leading to a growing market demand for acrylic engraving machines. Laser engraving can achieve more intricate and complex pattern engraving, bringing new possibilities to the processing of acrylic products and further promoting the development of related industries.

[0003] In practical laser processing applications, existing laser marking machines are often used for engraving graphics on acrylic surfaces. However, most of these machines only support single-sided engraving in their structural design and operation. When processing the back of an acrylic sheet, the operator must first release the clamping or magnetic fixation of the sheet, then carefully manually flip the acrylic sheet so that the back is facing up, and then re-align, correct, and clamp it before engraving can begin. This flipping and re-installation process is not only cumbersome and time-consuming, but also prone to misalignment of the front and back patterns due to secondary positioning errors, or scratches on the sheet surface during re-fixation, significantly affecting processing efficiency and finished product quality. Summary of the Invention

[0004] In order to overcome the shortcomings of existing inkjet marking machines, such as cumbersome operation, low efficiency, misalignment and easy surface scratches caused by manual flipping and reclamping, this application provides an acrylic engraving machine.

[0005] The acrylic engraving machine provided in this application adopts the following technical solution: An acrylic engraving machine includes a frame, a gantry structure, and a laser head. The gantry structure is connected to the frame, and the laser head is connected to the gantry structure. The frame is connected to a clamping device for clamping acrylic sheets. It also includes a lifting device, a reversing device, and a reset push-pull device. The frame is provided with a reversing slot for providing space for reversing the acrylic sheet. The lifting device, reversing device, and reset push-pull device are all located in the reversing slot. The lifting device includes multiple lifting screws, multiple lifting blocks, and a drive unit. Each lifting block is sleeved on at least two lifting screws and threadedly connected to the corresponding lifting screw. The clamping device is connected to the lifting block. The drive unit is connected to the frame, and multiple lifting screws are all connected to the drive unit for driving the multiple lifting screws to rotate synchronously. The reversing device includes a fixed rod, a slider, a movable sleeve, a telescopic rod, a gear, a rack, and an actuating rod. The fixed rod is connected to the frame and has a vertically arranged groove. The slider is disposed in the groove and is slidably connected to the fixed rod. The movable sleeve is fixedly connected to the slider. The gear is connected to the first end of the telescopic rod. The second end of the telescopic rod passes through the lifting block and the movable sleeve and is rotatably connected to both the lifting block and the movable sleeve. The rack is connected to the actuating rod. The gear can selectively mesh with the rack, and when the gear meshes with the rack, it is used to realize the flipping of the clamping device. The actuating rod is connected to the frame. The reset push-pull device is connected to the movable sleeve and is used to control the extension and retraction state of the telescopic rod. After the clamping device is flipped, the reset push-pull device controls the telescopic rod to extend, so as to misalign the gear and the rack.

[0006] By adopting the above technical solution, during use, the clamping device on the frame can stably hold the acrylic sheet, and the laser head moves in the X and Y axes through the gantry structure to process the acrylic sheet. When it is necessary to change the direction of the acrylic sheet, the drive unit is activated. The drive unit drives multiple lifting screws to rotate synchronously, causing the lifting blocks sleeved on the lifting screws to move up and down, thereby causing the telescopic rod and clamping device to descend. The telescopic rod drives the moving sleeve to move, and the moving sleeve drives the slider to slide in the groove of the fixed rod, thereby causing the gear and rack to mesh, realizing the flipping of the clamping device and completing the reversal of the acrylic sheet. After the clamping device has flipped, the reset push-pull device controls the extension of the telescopic rod, causing the gear and rack to misalign and avoid unnecessary interference. The drive unit is then activated again, causing the telescopic rod and clamping device to rise and reset, preparing for the engraving of the acrylic sheet. This design facilitates the processing operation of acrylic sheets, improves processing efficiency, and ensures the stability of equipment operation.

[0007] Preferably, the reset push-pull device includes a toggle lever, a synchronizing lever, and an adjusting lever. The toggle lever is U-shaped and covers the edge of the gear. A gap is provided between the toggle lever and the rack for the gear to rotate. The synchronizing lever is slidably connected to the moving sleeve, and the toggle lever is fixedly connected to the synchronizing lever. The top end of the fixed rod is connected to a first adjusting structure, and the bottom end is connected to a second adjusting structure. Both the first and second adjusting structures are used to adjust the position of the adjusting rod and realize the position change of the actuating rod. When the adjusting rod is connected to the first adjusting structure, the actuating rod moves the gear and the rack to align. When the adjusting rod is connected to the second adjusting structure, the actuating rod moves the gear and the rack to be misaligned.

[0008] By adopting the above technical solution, when it is necessary to align the gear and rack, the adjusting rod is connected to the first adjusting structure. The first adjusting structure adjusts the position of the adjusting rod, thereby changing the position of the actuating rod so that the actuating rod moves the gear and rack to align. When the clamping device has been flipped, and it is necessary to misalign the gear and rack, the adjusting rod is connected to the second adjusting structure. The second adjusting structure adjusts the position of the adjusting rod so that the actuating rod moves the gear and rack to misalign, thereby effectively controlling the extension and retraction state of the telescopic rod and meeting the operational requirements such as reversing the acrylic plate.

[0009] Preferably, the synchronizing rod is inserted into the movable sleeve, and the movable sleeve has a through hole for the adjusting rod to move through.

[0010] By adopting the above technical solution, the synchronizing rod is inserted into the movable sleeve, making the connection between the synchronizing rod and the movable sleeve more stable. At the same time, a through hole is opened on the movable sleeve for the adjustment rod to move through. The adjustment rod passes through the through hole, which can further ensure the stability of the adjustment rod's movement, thereby ensuring the stability of the entire reset push-pull device.

[0011] Preferably, both the telescopic rod and the synchronizing rod are connected to a locking device. The movable sleeve has a fixing groove. The locking device includes a spring and a locking block. The spring is disposed in the fixing groove. One end of the spring is fixedly connected to the movable sleeve, and the other end is fixedly connected to the locking block. The locking block is inserted into the fixing groove and slidably connected to the movable sleeve. The locking block abuts against the outer tube of the corresponding telescopic rod or the synchronizing rod.

[0012] By adopting the above technical solution, the locking device can limit the telescopic rod and the synchronization rod to prevent them from moving arbitrarily, ensuring the stability of the telescopic rod and the synchronization rod during operation, thereby ensuring the normal operation of the acrylic engraving machine's reversing device and reset push-pull device, and improving the reliability of the equipment.

[0013] Preferably, the first adjustment structure includes a first bracket, a first working plate, and a first adjustment groove. The first bracket is fixedly connected to the fixed rod, and the first working plate is fixedly connected to the first bracket. The first working plate is arranged parallel to the surface where the slide groove is located. The first adjustment groove is formed on the first working plate. The first adjustment groove includes a first guide portion and a first holding portion. The first guide portion is located on one side of the first holding portion. The first guide portion and the first holding portion both penetrate the end face of the first working plate near the second adjustment structure. The first guide portion communicates with the first holding portion. The first guide portion is provided with a first inclined surface, which slopes from one end near the second adjusting structure to the other end near the first holding portion; when the adjusting rod is located in the first guide portion and slides against the first inclined surface, the actuating rod drives the gear to move in the direction of aligning with the rack; when the adjusting rod is located in the first holding portion, the gear is aligned with the rack.

[0014] By adopting the above technical solution, when using the acrylic engraving machine, when the adjusting rod is located in the first guide part of the first adjusting structure and slides against the first inclined surface, under the guiding action of the first inclined surface, the actuating rod will drive the gear to move in the direction of aligning with the rack. When the adjusting rod moves to the first holding part, it can keep the gear and the rack in an aligned state, which facilitates the subsequent flipping operation of the clamping device.

[0015] Preferably, the second adjustment structure includes a second bracket, a second working plate, and a second adjustment groove. The second bracket is fixedly connected to the fixed rod, and the second working plate is fixedly connected to the second bracket. The second working plate and the first working plate are located on the same plane. The second adjustment groove is formed on the second working plate. The second adjustment groove includes a second guide portion and a second holding portion. The second guide portion is correspondingly provided with the first holding portion, and the second holding portion is correspondingly provided with the first guide portion. Both the second guide portion and the second holding portion penetrate the end face of the second working plate near the first adjustment structure. The second guide portion communicates with the second holding portion. The second guide portion is provided with a second inclined surface, which slopes from one end near the first adjusting structure to the other end towards the second holding portion; when the adjusting rod is located in the second guide portion and slides against the second inclined surface, the actuating rod drives the gear to move away from the rack; when the adjusting rod is located in the second holding portion, the gear and the rack are completely misaligned.

[0016] By adopting the above technical solution, the second guide part and the second holding part of the second adjustment structure enable the adjustment rod to drive the actuating rod to move the gear away from the rack when the second guide part slides against the second inclined surface, thus achieving misalignment between the gear and the rack. When the adjustment rod is located in the second holding part, it ensures complete misalignment between the gear and the rack, improving the stability and reliability of the engraving machine's reversing device. Simultaneously, the fact that the second action plate and the first action plate are located on the same plane, and the corresponding arrangement of each component, makes the entire reversing adjustment process more precise and smooth, further improving the engraving machine's working efficiency and reversing accuracy.

[0017] Preferably, the drive unit includes a drive motor, a synchronization component, and a drive assembly. The drive motor is connected to the frame. The drive assembly includes multiple worms and multiple worm wheels. The two ends of the worms are rotatably connected to the frame via protrusions. All the worms are connected to the synchronization component. Any worm is fixedly connected to the drive shaft of the drive motor. Each lifting screw is fitted with a worm wheel, and the worm wheel meshes with the worm.

[0018] By adopting the above technical solution, after the drive motor starts, its drive shaft drives the worm gear fixedly connected to it to rotate. The worm gear drives other worm gears to rotate synchronously through the synchronization component. When the worm gear rotates, it meshes with the worm wheel, thereby driving the lifting screw with the worm wheel sleeve to rotate synchronously. This realizes the synchronous drive of multiple lifting screws, ensuring that the lifting device can stably and efficiently drive the clamping device to perform lifting and lowering movements.

[0019] Preferably, the clamping device includes a first fixed beam, a second fixed beam, a first clamping assembly, and a second clamping assembly. Two first fixed beams are arranged in parallel, and two second fixed beams are arranged in parallel. The two second fixed beams are disposed between the two first fixed beams, and the two ends of the second fixed beams are respectively fixedly connected to the corresponding first fixed beams. The first clamping component and the second clamping component form a clamping unit, and each of the second fixed beams is connected to a clamping unit; the first clamping component and the second clamping component in each clamping unit are symmetrically distributed on the top and bottom of the second fixed beam for clamping acrylic sheets.

[0020] By adopting the above technical solution, a frame structure composed of a first fixed beam and a second fixed beam is used, along with a clamping unit composed of a first clamping component and a second clamping component, which can stably clamp the acrylic plate, ensuring that the acrylic plate will not shift during the engraving process and guaranteeing the engraving accuracy.

[0021] Preferably, both the first clamping assembly and the second clamping assembly include a first shaft, a clamping block, a second shaft, an adjusting rod, and bolts. Multiple first shafts, clamping blocks, and second shafts are provided. The first shaft and the second shaft are rotatably connected to the clamping block. The first shaft is fixedly connected to the second fixed beam. Multiple second shafts are fixedly connected to the adjusting rod. The bolt passes through the adjusting rod and is threadedly connected to it. The bolt is optionally threadedly connected to the first fixed beam. When it is necessary to clamp the acrylic sheet to be processed, the bolts of both the first clamping assembly and the second clamping assembly are threadedly connected to the first fixed beam to fix the clamping block.

[0022] By adopting the above technical solution, when it is necessary to clamp the acrylic sheet to be processed, the bolts of the first clamping assembly or the second clamping assembly, located directly below the second fixed beam, are threaded to the first fixed beam. The acrylic sheet is then placed on the two sets of clamping blocks located below the second fixed beam. The adjusting rod at the top of the second fixed beam moves, and the adjusting rod drives the clamping blocks to rotate around the first axis via the second shaft, so that multiple clamping blocks abut against the top of the acrylic sheet. The bolts fixing the adjusting rod are then connected to the first fixed beam. The synchronous movement of multiple clamping blocks improves clamping efficiency and enhances the stable clamping of the acrylic sheet to be processed.

[0023] Preferably, the second fixed beam has multiple grooves, and one end of the clamping block is correspondingly disposed in the groove; when the clamping block is in a non-working state, the clamping block is retracted into the corresponding groove; the clamping blocks of the first clamping assembly and the clamping blocks of the second clamping assembly are arranged in a one-to-one correspondence, and the distance between every two corresponding clamping blocks is equal to the thickness of the acrylic sheet.

[0024] By adopting the above technical solution, the clamping block can be retracted into the groove when not in operation, thus avoiding it from occupying extra space and making it convenient for equipment storage or operation; the clamping blocks of the first clamping component and the second clamping component correspond one-to-one and the distance is equal to the thickness of the acrylic sheet, which can accurately and stably clamp the acrylic sheet and provide a good foundation for subsequent engraving work.

[0025] In summary, this application has the following beneficial effects: During operation, the clamping device on the frame stably holds the acrylic sheet, while the laser head moves along the X and Y axes via a gantry structure to process the acrylic sheet. When the acrylic sheet needs to be reversed, the drive unit is activated. The drive unit drives multiple lifting screws to rotate synchronously, causing lifting blocks mounted on the screws to move up and down, which in turn lowers the telescopic rod and clamping device. The telescopic rod moves the moving sleeve, which in turn moves the slider within the groove of the fixed rod, causing the gear and rack to mesh, thus flipping the clamping device and automatically reversing the acrylic sheet. This eliminates the need for manual flipping, solving the problems of cumbersome operation and time-consuming processes, and improving processing efficiency. After the clamping device has flipped, a reset push-pull device controls the extension of the telescopic rod, causing the gear and rack to misalign and avoid unnecessary interference. The drive unit is then activated again, causing the telescopic rod and clamping device to rise and reset, preparing for acrylic sheet engraving. This design facilitates the processing of acrylic sheets, improves processing efficiency, reduces secondary positioning deviations, avoids misalignment of patterns on the front and back sides, and improves the quality of finished products; at the same time, it avoids scratching the surface of the sheet during the re-fixing process, ensuring the surface quality of the sheet. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the overall structure of an acrylic engraving machine.

[0027] Figure 2 This is a schematic diagram of the structure inside the reversing slot.

[0028] Figure 3 This is a schematic diagram of the clamping device.

[0029] Figure 4 This is a structural diagram of the lifting device.

[0030] Figure 5 This is a schematic diagram of the commutation device.

[0031] Figure 6 This is a schematic diagram of the reset push-pull device.

[0032] Figure 7 This is a diagram showing the position of the adjusting rod entering the second adjusting slot.

[0033] Figure 8 This is a diagram showing the position of the adjusting rod entering the first guide section.

[0034] Figure 9 This is a diagram showing the position of the adjusting lever entering the first holding section.

[0035] Explanation of reference numerals in the attached figures: 1. Frame; 11. Reversing groove; 12. Partition; 2. Gantry structure; 3. Laser head; 4. Clamping device; 41. First fixed beam; 42. Second fixed beam; 421. Groove; 43. First clamping assembly; 431. First shaft; 432. Clamping block; 433. Second shaft; 434. Adjusting rod; 435. Bolt; 44. Second clamping assembly; 5. Lifting device; 51. Lifting screw; 52. Lifting block; 53. Drive motor; 54. Synchronization assembly; 55. Drive assembly; 551. Worm gear; 552. Worm wheel; 6. Reversing device; 61. Fixed rod; 611. Slide groove; 62. Slider; 63. Moving sleeve; 631. Through hole; 632. Fixing groove; 64. Telescopic rod; 65. Gear; 66. Rack; 67. Actuating rod; 7. Reset push-pull device; 71. Actuating rod; 72. Synchronizing rod; 73. Adjusting rod; 8. First adjusting structure; 81. First bracket; 82. First actuating plate; 83. First adjusting groove; 831. First guide part; 832. First holding part; 9. Second adjusting structure; 91. Second bracket; 92. Second actuating plate; 93. Second adjusting groove; 931. Second guide part; 932. Second holding part; 10. Locking device; 101. Spring; 102. Locking block. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0038] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0039] An acrylic engraving machine, as shown in the reference Figure 1 and Figure 2 It includes a frame 1, a gantry structure 2, a laser head 3, a clamping device 4, a lifting device 5, a reversing device 6, and a reset push-pull device 7 (see reference). Figure 6 The gantry structure 2 is fixedly connected to the frame 1, the laser head 3 is fixedly connected to the gantry structure 2, the clamping device 4 is connected to the frame 1 for clamping the acrylic plate, and the lifting device 5, the reversing device 6, and the reset push-pull device 7 are also included (see reference). Figure 6 All of these devices are located in the reversing slot 11 of the frame 1. The reversing slot 11 provides space for the acrylic sheet to be reversed. Through the coordinated operation of each device, the automatic flipping and engraving of the acrylic sheet is realized, avoiding the tedious operation of manual flipping and the problem of secondary positioning deviation, thus improving processing efficiency and finished product quality.

[0040] Reference Figure 1 The gantry structure 2 adopts an H-shaped gantry structure. The guide rails along the X-axis of the gantry structure 2 are fixed on both sides of the frame 1, and the guide rails along the Y-axis are mounted on top of the frame 1. The laser head 3 is fixed on the slider 62 of the guide rail along the Y-axis, which is used to realize the movement of the laser machine in the X-axis and Y-axis directions.

[0041] Reference Figure 1 and Figure 3The clamping device 4 includes a first fixed beam 41, a second fixed beam 42, a first clamping assembly 43, and a second clamping assembly 44. Two first fixed beams 41 are arranged in parallel, and two second fixed beams 42 are arranged in parallel. The two second fixed beams 42 are located between the two first fixed beams 41, and the two ends of the second fixed beams 42 are respectively fixedly connected to the corresponding first fixed beams 41. The first fixed beams 41 and the second fixed beams 42 form a rectangular frame.

[0042] Reference Figure 3 The first clamping assembly 43 and the second clamping assembly 44 form a clamping unit, and each second fixed beam 42 is connected to a set of clamping units. The first clamping assembly 43 and the second clamping assembly 44 in each set of clamping units are symmetrically distributed at the top and bottom of the second fixed beam 42 for clamping acrylic sheets.

[0043] Reference Figure 3 The first clamping assembly 43 and the second clamping assembly 44 have the same structure, both including a first shaft 431, a clamping block 432, a second shaft 433, an adjusting rod 434, and a bolt 435. The top and bottom surfaces of the second fixed beam 42 are provided with multiple grooves 421, which are evenly distributed along the length of the second fixed beam 42. The grooves 421 on the top surface of the second fixed beam 42 correspond one-to-one with the grooves 421 on the bottom surface.

[0044] Multiple first shafts 431, clamping blocks 432, and second shafts 433 are provided, and the specific number can be set according to actual conditions. Both the first shaft 431 and the second shaft 433 are rotatably connected to the clamping block 432, and are located at opposite ends of the clamping block 432. One end of the clamping block 432 is located within a corresponding groove 421, and the second end of the clamping block 432 can selectively enter the corresponding groove 421. The first shaft 431 extends from the clamping block 432 towards the second fixed beam 42 and is fixedly connected to the second fixed beam 42. The second shafts 433 extend upward from the clamping block 432, and multiple second shafts 433 are fixedly connected to the adjusting rod 434. Multiple bolts 435 are provided, passing through the adjusting rod 434 and threadedly connected to it. Bolt 435 is optionally threaded to the first fixing beam 41. When it is necessary to clamp the acrylic sheet to be processed, bolts 435 of both the first clamping assembly 43 and the second clamping assembly 44 are threaded to the first fixing beam 41 to fix the clamping block 432. The bolts 435 of the first clamping assembly 43 and the second clamping assembly 44 are staggered on the first fixing beam 41 to avoid interference. A protective pad is fixedly connected to the side wall of the clamping block 432 near the acrylic sheet to protect the acrylic sheet.

[0045] In use, the adjusting rod 434 of the lower first clamping assembly 43 or the second clamping assembly 44 is fixed to the first fixed beam 41, so that the second end of the clamping block 432 protrudes from the groove 421 to support the acrylic sheet. At the same time, the adjusting rod 434 of the lower first clamping assembly 43 or the second clamping assembly 44 is adjusted away from the first fixed beam 41, so that the second end of the clamping block 432 enters the groove 421, making it easier to place the acrylic sheet between the first clamping assembly 43 and the second clamping assembly 44. The adjusting rod 434 is adjusted again, and the clamping block 432 is rotated around the first shaft 431 through the second shaft 433, so that the second end of the clamping block 432 protrudes from the second fixed beam 42 and abuts against the acrylic sheet. The bolt 435 is rotated to make the bolt 435 threadedly connected to the first fixed beam 41, thereby fixing the acrylic sheet.

[0046] Reference Figure 2 and Figure 4 The lifting device 5 includes lifting screws 51, lifting blocks 52, and a drive unit. Four lifting screws 51 are vertically and parallelly arranged at the four corners of the reversing groove 11. Both ends of the lifting screws 51 are rotatably connected to the frame 1 via bearings to ensure smooth rotation. In some cases, ball screws can be used instead of ordinary screws to improve transmission efficiency and accuracy. Two lifting blocks 52 are rectangular in shape and are located on the same plane and spaced apart. Each lifting block 52 has threaded holes that mate with the lifting screws 51. Each lifting block 52 is fitted onto two lifting screws 51 and threadedly connected to the corresponding lifting screw 51. Both ends of the lifting blocks 52 are slidably connected to the frame 1. When the lifting screws 51 rotate, the lifting blocks 52 move linearly along the lifting screws 51. A first fixed beam 41 is arranged in a one-to-one correspondence with each lifting block 52 and is connected to the corresponding lifting block 52.

[0047] Reference Figure 2 and Figure 4 A horizontally arranged partition 12 is provided inside the commutation slot 11, and the partition 12 is fixedly connected to the frame 1. The partition 12 divides the commutation slot 11 into two parts, with the drive unit located in the lower part.

[0048] The drive unit is connected to the frame 1, and multiple lifting screws 51 are also connected to the drive unit to drive the multiple lifting screws 51 to rotate synchronously. The drive unit includes a drive motor 53, a synchronization component 54, and a drive assembly 55. The drive motor 53 is fixedly connected to the outer wall of the frame 1 and is usually a servo motor, which has the characteristics of high precision and fast response; a stepper motor can also be used. The drive assembly 55 includes two worms 551 and four worm wheels 552. The two worms 551 are arranged in parallel and are respectively located on both sides of the four lifting screws 51. Each worm 551 has two threaded portions, and the two ends of the worm 551 are rotatably connected to the frame 1 through protrusions. Both worms 551 are connected to the synchronization component 54, and any worm 551 is fixedly connected to the drive shaft of the drive motor 53. Each lifting screw 51 can be fitted with a worm wheel 552, and the worm wheel 552 meshes with the worm 551 adjacent to it.

[0049] In use, the drive motor 53 is started, and through the transmission of the worm gear 551 and worm wheel 552, the lifting screw 51 is driven to rotate synchronously, thereby causing the lifting block 52 to move up and down. The combination logic of this structure is that the drive motor 53 provides power, which drives multiple worm gears 551 to rotate synchronously through the synchronization component 54. Then, the worm gears 551 drive the worm wheel 552, thereby realizing the synchronous rotation of multiple lifting screws 51. Finally, the lifting block 52 drives the first fixed beam 41 to move up and down, providing space for the acrylic sheet to be flipped.

[0050] Reference Figure 4 The synchronization component 54 can be a combination of sprockets and chains, or a combination of toothed pulleys and toothed belts. In this embodiment, a combination of sprockets and chains is used, with two sprockets fixedly connected to two worm gears 551 respectively, and the chain is sleeved on the two sprockets and meshes with both sprockets.

[0051] Reference Figure 2 , Figure 5 and Figure 6 Two sets of reversing devices 6 are provided, one on each side of the clamping device 4. The reversing device 6 includes a fixed rod 61, a slider 62, a movable sleeve 63, a telescopic rod 64, a gear 65, a rack 66, and an actuating rod 67. The fixed rod 61 is vertically arranged and fixedly connected to the frame 1. A vertically arranged groove 611 is formed on the side wall of the fixed rod 61, and the slider 62 is disposed within the groove 611 and slidably connected to the fixed rod 61. The slider 62 and the groove 611 have dovetail-shaped cross-sections. The movable sleeve 63 is fixedly connected to the slider 62; when the slider 62 slides within the groove 611, the movable sleeve 63 moves up and down accordingly.

[0052] The telescopic rod 64 passes through the movable sleeve 63 and is rotatably connected to the movable sleeve 63. The fixed part of the telescopic rod 64 has a circular cross-section, and the telescopic part has a square cross-section. The gear 65 is fixedly connected to the telescopic end of the telescopic rod 64. The fixed part of the telescopic rod 64 passes through the lifting block 52 and is fixedly connected to the first fixed beam 41.

[0053] Reference Figure 2 and Figure 5 The rack 66 is vertically arranged and fixedly connected to the actuating rod 67. The actuating rod 67 is fixedly connected to the fixed rod 61. The gear 65 can selectively mesh with the rack 66, and when the gear 65 meshes with the rack 66, it is used to realize the flipping of the first fixed beam 41.

[0054] When the lifting block 52 drives the clamping device 4 to descend to a certain position, the gear 65 meshes with the rack 66. As the lifting block 52 continues to descend, the gear 65 rolls on the rack 66, thereby causing the telescopic rod 64 to drive the first fixed beam 41 to flip, thus realizing the flipping of the acrylic plate.

[0055] Reference Figure 6 The reset push-pull device 7 is connected to the movable sleeve 63 and is used to control the extension and retraction state of the telescopic rod 64. After the clamping device 4 is flipped, the reset push-pull device 7 controls the telescopic rod 64 to extend, so as to make the gear 65 and the rack 66 misaligned.

[0056] The reset push-pull device 7 includes an actuating rod 71, a synchronizing rod 72, and an adjusting rod 73. The actuating rod 71 is U-shaped and covers the edge of the gear 65. A gap is provided between the actuating rod 71 and the rack 66 to allow the gear 65 to rotate, thus avoiding interference. The synchronizing rod 72 passes through the movable sleeve 63 and is slidably connected to it. One end of the synchronizing rod 72 is fixedly connected to the side wall of the actuating rod 71 near the movable sleeve 63. The actuating rod 71 is fixedly connected to the synchronizing rod 72. A through hole 631 is provided at the top of the movable sleeve 63, through which the actuating rod 71 passes.

[0057] In use, adjust the lever 71 so that it moves within the through hole 631, thereby adjusting the position of the gear 65 by adjusting the lever 73.

[0058] Reference Figure 6 Both the telescopic rod 64 and the synchronizing rod 72 are connected to locking devices 10. The movable sleeve 63 has two fixing slots 632, and the two locking devices 10 correspond one-to-one with the two fixing slots 632.

[0059] The locking device 10 includes a spring 101 and a locking block 102. The spring 101 is disposed in the fixing groove 632, and the locking block 102 is inserted into the fixing groove 632 and slidably connected to the moving sleeve 63. One end of the spring 101 is fixedly connected to the moving sleeve 63, and the other end is fixedly connected to the locking block 102. The locking block 102 abuts against the outer tube of the corresponding telescopic rod 64 or the synchronizing rod 72, and has a certain limiting effect on the telescopic rod 64 and the synchronizing rod 72.

[0060] Reference Figure 5 , Figures 7 to 9 The top of the fixed rod 61 is connected to a first adjusting structure 8, and the bottom is connected to a second adjusting structure 9. Both the first adjusting structure 8 and the second adjusting structure 9 are used to adjust the position of the adjusting rod 73 and realize the position change of the actuating rod 71. When the adjusting rod 73 is connected to the first adjusting structure 8, the actuating rod 71 actuates the gear 65 and the rack 66 to be aligned; when the adjusting rod 73 is connected to the second adjusting structure 9, the actuating rod 71 actuates the gear 65 and the rack 66 to be misaligned.

[0061] Reference Figures 6 to 9 The first adjustment structure 8 includes a first bracket 81, a first action plate 82 and a first adjustment groove 83. The first bracket 81 is fixedly connected to the fixed rod 61, and the first action plate 82 is fixedly connected to the first bracket 81. The first action plate 82 is parallel to the surface where the sliding groove 611 of the fixed rod 61 is located, and a distance is left to facilitate the passage of the moving sleeve 63.

[0062] The first adjustment groove 83 is formed on the first actuating plate 82. The first adjustment groove 83 includes a first guide portion 831 and a first holding portion 832. The first guide portion 831 is located on one side of the first holding portion 832. Both the first guide portion 831 and the first holding portion 832 penetrate the end face of the first actuating plate 82 near the second adjustment structure 9 and are connected to each other. The first guide portion 831 is provided with a first inclined surface. The first inclined surface slopes from one end near the second adjustment structure 9 to the other end near the first holding portion 832. When the adjustment rod 73 is located in the first guide portion 831 and slides against the first inclined surface, the actuating rod 71 drives the gear 65 to move in the direction of aligning with the rack 66. When the adjustment rod 73 is located in the first holding portion 832, the gear 65 is aligned with the rack 66.

[0063] Reference Figures 6 to 9The second adjustment structure 9 includes a second bracket 91, a second action plate 92, and a second adjustment groove 93. The second bracket 91 is fixedly connected to the fixed rod 61, and the second action plate 92 is fixedly connected to the second bracket 91. The second action plate 92 and the first action plate 82 are located on the same plane. The second adjustment groove 93 is formed on the second action plate 92. The second adjustment groove 93 includes a second guide part 931 and a second holding part 932. The second guide part 931 is correspondingly arranged with the first holding part 832, and the second holding part 932 is correspondingly arranged with the first guide part 831. The second guide part 931 and the second holding part 932 both penetrate the end face of the second action plate 92 near the first adjustment structure 8, and the second guide part 931 and the second holding part 932 are connected. The second guide portion 931 is provided with a second inclined surface, which slopes from one end near the first adjusting structure 8 to the other end towards the second holding portion 932. When the adjusting rod 73 is located in the second guide portion 931 and slides against the second inclined surface, the actuating rod 71 drives the gear 65 to move away from the rack 66. When the adjusting rod 73 is located in the second holding portion 932, the gear 65 and the rack 66 are completely misaligned.

[0064] In use, the clamping device 4 is located at the top of the frame 1. At this time, the actuating lever 71 is located in the first holding part 832. The drive motor 53 is started, driving the lifting block 52 to descend. The lifting block 52 drives the telescopic rod 64 to descend. The lifting rod drives the gear 65 to mesh with the rack 66. During the descent, the gear 65 drives the telescopic rod 64 to rotate, and the telescopic rod 64 drives the clamping device 4 to rotate, thereby realizing the rotation of the acrylic plate. Until the actuating lever 71 enters the second guide part 931, the lifting block 52 continues to descend and is guided by the second inclined surface into the second holding part 932, thereby causing the gear 65 and the rack 66 to misalign, driving the lifting block 52 to rise. The actuating lever 71 enters the first guide part 831 and is guided by the first inclined surface into the first holding part 832, preparing for the next reversal. During the movement, the locking block 102 abuts against the fixed part of the corresponding telescopic rod 64 or the synchronizing rod 72, limiting the telescopic rod 64 and the synchronizing rod 72. Once the force on the gear 65 or the force on the actuating rod 71 is greater than the friction between the telescopic rod 64 or the synchronizing rod 72 and the locking block 102, the telescopic rod 64 is driven to rotate by the gear 65 or the synchronizing rod 72 is driven to slide by the actuating rod 71.

[0065] The implementation principle of this embodiment is as follows: The acrylic engraving machine achieves automatic flipping and engraving of acrylic sheets through the coordinated operation of the lifting device 5, the reversing device 6, and the reset push-pull device 7. The drive unit drives the lifting screw 51 to rotate, causing the lifting block 52 to lower the clamping device 4. When the gear 65 meshes with the rack 66, the clamping device 4 flips, completing the flipping of the acrylic sheet. The reset push-pull device 7 controls the alignment and misalignment of the gear 65 and rack 66 by adjusting the position of the adjusting rod 73, ensuring the smooth progress of the flipping process. The clamping device 4 can stably clamp the acrylic sheet, improving the stability and accuracy of the processing. Compared with the prior art, this avoids the tedious manual flipping operation and the problem of secondary positioning deviation, significantly improving processing efficiency and product quality.

Claims

1. An acrylic engraving machine, characterized in that, It includes a frame (1), a gantry structure (2) and a laser head (3), wherein the gantry structure (2) is connected to the frame (1) and the laser head (3) is connected to the gantry structure (2); the frame (1) is connected to a clamping device (4) for clamping acrylic sheets; It also includes a lifting device (5), a reversing device (6), and a reset push-pull device (7). The frame (1) is provided with a reversing groove (11) for providing space for reversing the acrylic sheet. The lifting device (5), the reversing device (6), and the reset push-pull device (7) are all located in the reversing groove (11). The lifting device (5) includes multiple lifting screws (51), multiple lifting blocks (52), and a drive unit. Each lifting block (52) is sleeved on at least two lifting screws (51) and threadedly connected to the corresponding lifting screw (51). The clamping device (4) is connected to the lifting block (52). The drive unit is connected to the frame (1), and multiple lifting screws (51) are all connected to the drive unit to drive multiple lifting screws (51) to rotate synchronously. The reversing device (6) includes a fixed rod (61), a slider (62), a movable sleeve (63), a telescopic rod (64), a gear (65), a rack (66), and an actuating rod (67). The fixed rod (61) is connected to the frame (1). A vertically arranged groove (611) is provided on the fixed rod (61). The slider (62) is disposed in the groove (611) and is slidably connected to the fixed rod (61). The movable sleeve (63) is fixedly connected to the slider (62). The gear (65) is connected to the fixed rod (67). The first end of the telescopic rod (64) is connected, the second end of the telescopic rod (64) passes through the lifting block (52) and the moving sleeve (63), and is rotatably connected to both the lifting block (52) and the moving sleeve (63). The rack (66) is connected to the actuating rod (67). The gear (65) can selectively mesh with the rack (66), and when the gear (65) meshes with the rack (66), it is used to realize the flipping of the clamping device (4). The actuating rod (67) is connected to the frame (1). The reset push-pull device (7) is connected to the movable sleeve (63) and is used to control the extension and retraction state of the telescopic rod (64). After the clamping device (4) is flipped, the reset push-pull device (7) controls the telescopic rod (64) to extend, so as to make the gear (65) and the rack (66) misaligned.

2. The acrylic engraving machine according to claim 1, characterized in that, The reset push-pull device (7) includes a toggle lever (71), a synchronizing lever (72), and an adjusting lever (73). The toggle lever (71) is U-shaped and covers the edge of the gear (65). A gap is provided between the toggle lever (71) and the rack (66) for the gear (65) to rotate. The synchronizing lever (72) is slidably connected to the moving sleeve (63). The toggle lever (71) is fixedly connected to the synchronizing lever (72). The top end of the fixed rod (61) is connected to a first adjusting structure (8), and the bottom end is connected to a second adjusting structure (9). Both the first adjusting structure (8) and the second adjusting structure (9) are used to adjust the position of the adjusting rod (73) and realize the position change of the actuating rod (71). When the adjusting rod (73) is connected to the first adjusting structure (8), the actuating rod (71) moves the gear (65) to align with the rack (66). When the adjusting rod (73) is connected to the second adjusting structure (9), the actuating rod (71) moves the gear (65) and the rack (66) to be misaligned.

3. The acrylic engraving machine according to claim 2, characterized in that, The synchronizing rod (72) is inserted into the movable sleeve (63), and the movable sleeve (63) has a through hole (631) for the adjusting rod (73) to move through. The adjusting rod (73) passes through the through hole (631).

4. The acrylic engraving machine according to claim 2, characterized in that, Both the telescopic rod (64) and the synchronizing rod (72) are connected to a locking device (10). The movable sleeve (63) has a fixed groove (632). The locking device (10) includes a spring (101) and a locking block (102). The spring (101) is located in the fixed groove (632). One end of the spring (101) is fixedly connected to the movable sleeve (63), and the other end is fixedly connected to the locking block (102). The locking block (102) is inserted into the fixed groove (632) and slidably connected to the movable sleeve (63). The locking block (102) abuts against the outer tube of the corresponding telescopic rod (64) or the synchronizing rod (72).

5. The acrylic engraving machine according to claim 2, characterized in that, The first adjustment structure (8) includes a first bracket (81), a first working plate (82), and a first adjustment groove (83). The first bracket (81) is fixedly connected to the fixed rod (61), and the first working plate (82) is fixedly connected to the first bracket (81). The first working plate (82) is parallel to the surface of the slide groove (611). The first adjustment groove (83) is opened on the first working plate (82). The first adjustment groove (83) includes a first guide part (831) and a first holding part (832). The first guide part (831) is located on one side of the first holding part (832). The first guide part (831) and the first holding part (832) both penetrate the end face of the first working plate (82) near the second adjustment structure (9). The first guide part (831) and the first holding part (832) are in communication. The first guide portion (831) is provided with a first inclined surface, which is inclined from one end near the second adjusting structure (9) to the other end near the first holding portion (832); when the adjusting rod (73) is located in the first guide portion (831) and slides against the first inclined surface, the actuating rod (71) drives the gear (65) to move in the direction of aligning with the rack (66); when the adjusting rod (73) is located in the first holding portion (832), the gear (65) is aligned with the rack (66).

6. The acrylic engraving machine according to claim 5, characterized in that, The second adjustment structure (9) includes a second bracket (91), a second action plate (92), and a second adjustment groove (93). The second bracket (91) is fixedly connected to the fixed rod (61), and the second action plate (92) is fixedly connected to the second bracket (91). The second action plate (92) and the first action plate (82) are located on the same plane. The second adjustment groove (93) is opened on the second action plate (92). The second adjustment groove (93) includes a second guide part (931) and a second holding part (932). The second guide part (931) is correspondingly arranged with the first holding part (832), and the second holding part (932) is correspondingly arranged with the first guide part (831). The second guide part (931) and the second holding part (932) both penetrate the end face of the second action plate (92) near the first adjustment structure (8). The second guide part (931) and the second holding part (932) are connected. The second guide portion (931) is provided with a second inclined surface, which is inclined from one end near the first adjusting structure (8) to the other end near the second holding portion (932); when the adjusting rod (73) is located in the second guide portion (931) and slides against the second inclined surface, the actuating rod (71) drives the gear (65) to move away from the rack (66); when the adjusting rod (73) is located in the second holding portion (932), the gear (65) and the rack (66) are completely misaligned.

7. The acrylic engraving machine according to claim 1, characterized in that, The drive unit includes a drive motor (53), a synchronization component (54), and a drive component (55). The drive motor (53) is connected to the frame (1). The drive component (55) includes multiple worms (551) and multiple worm wheels (552). The two ends of the worms (551) are rotatably connected to the frame (1) through protrusions. All the worms (551) are connected to the synchronization component (54). Any worm (551) is fixedly connected to the drive shaft of the drive motor (53). Each lifting screw (51) is fitted with a worm wheel (552), and the worm wheel (552) meshes with the worm (551).

8. The acrylic engraving machine according to claim 1, characterized in that, The clamping device (4) includes a first fixed beam (41), a second fixed beam (42), a first clamping assembly (43), and a second clamping assembly (44). There are two first fixed beams (41) arranged in parallel, and two second fixed beams (42) arranged in parallel. The two second fixed beams (42) are located between the two first fixed beams (41), and the two ends of the second fixed beams (42) are respectively fixedly connected to the corresponding first fixed beams (41). The first clamping component (43) and the second clamping component (44) form a clamping unit, and each of the second fixed beams (42) is connected to a clamping unit; the first clamping component (43) and the second clamping component (44) in each clamping unit are symmetrically distributed on the top and bottom of the second fixed beam (42) for clamping acrylic sheets.

9. The acrylic engraving machine according to claim 8, characterized in that, Both the first clamping assembly (43) and the second clamping assembly (44) include a first shaft (431), a clamping block (432), a second shaft (433), an adjusting rod (434), and a bolt (435). Multiple first shafts (431), clamping blocks (432), and second shafts (433) are provided. Both the first shaft (431) and the second shaft (433) are rotatably connected to the clamping block (432). The first shaft (431) is fixedly connected to the second fixed beam (42). Multiple second shafts (433) are fixedly connected to the adjusting rod (434). The bolt (435) passes through the adjusting rod (434) and is threadedly connected to the adjusting rod (434). The bolt (435) is optionally threadedly connected to the first fixed beam (41). When it is necessary to clamp the acrylic sheet to be processed, the bolts (435) of the first clamping assembly (43) and the second clamping assembly (44) are threadedly connected to the first fixed beam (41) to fix the clamping block (432).

10. The acrylic engraving machine according to claim 9, characterized in that, The second fixed beam (42) has multiple grooves (421), and one end of the clamping block (432) is correspondingly disposed in the groove (421). When the clamping block (432) is in a non-working state, the clamping block (432) is retracted into the corresponding groove (421). The clamping blocks (432) of the first clamping assembly (43) and the clamping blocks (432) of the second clamping assembly (44) are arranged in a one-to-one correspondence, and the distance between every two corresponding clamping blocks (432) is equal to the thickness of the acrylic sheet.

Images