Numerical control cutting machine for large-format materials

Abstract

The present application relates to the technical field of cutting machine, disclose a kind of numerical control cutting machine for large fabric, comprising: frame, including base and crossbeam;Feeding mechanism, including tension adjusting assembly and feeding transmission belt, feeding transmission belt is set to the top of base, for carrying and conveying fabric along the feeding direction;Material pressing mechanism, including the first material pressing assembly and the second material pressing assembly that can be independently lifted, first material pressing assembly, second material pressing assembly and crossbeam are all transversely arranged on frame and located above feeding transmission belt;Cutting mechanism, cutting mechanism is slidably arranged on crossbeam, first driving member is provided on crossbeam, and the cutting mechanism is driven to move along the length direction thereof, and cutting mechanism includes cutting knife and the driving assembly for driving cutting knife to cut.The cutting machine of the present application can meet the cutting demand of large fabric through the cooperation of feeding mechanism, cutting mechanism and material pressing mechanism, and greatly improves the cutting efficiency.

Description

Technical Field

[0001] This application relates to the technical field of cutting machines, and in particular to a CNC cutting machine for large-format fabrics. Background Technology

[0002] In the current furniture manufacturing industry, the cutting technology for leather and fabrics has undergone multiple stages of development. Early methods primarily involved traditional manual or semi-automatic mechanical cutting. When processing large-format fabrics, these methods often faced problems such as insufficient cutting precision and low efficiency, failing to meet the requirements of high-efficiency and precise processing, thus placing higher demands on equipment performance and stability. While existing CNC cutting machines have improved automation through program control, they are not highly adaptable to large-format materials. Uneven material laying, misalignment during cutting, or wrinkles often lead to distorted cutting contours, resulting in a significant decrease in cutting precision for large-format materials.

[0003] Therefore, developing a CNC cutting machine that can efficiently and accurately process large-format fabrics has become a pressing technical challenge for the industry. Summary of the Invention

[0004] In order to solve the technical problems of insufficient cutting accuracy and efficiency of existing cutting machines, this application provides a CNC cutting machine for large-format fabrics.

[0005] A CNC cutting machine for large-format fabrics, comprising: The frame includes a base and crossbeams; The feeding mechanism includes a tension adjustment component and a feeding conveyor belt, which is disposed above the base and is used to carry and convey the fabric along the feeding direction. The pressing mechanism includes a first pressing component and a second pressing component that can be independently lifted and lowered. The first pressing component, the second pressing component, and the crossbeam are respectively arranged across the frame and above the feeding conveyor belt. A cutting mechanism is slidably disposed on the crossbeam. The crossbeam is provided with a first driving member that drives the cutting mechanism to move along its length direction. The cutting mechanism includes a cutting blade and a driving assembly that drives the cutting blade to perform cutting.

[0006] The crossbeam, the first pressing assembly, and the second pressing assembly can move independently along the length of the base.

[0007] By adopting the above technical solution, the frame of the CNC cutting machine of this application is equipped with a crossbeam that can move along the length of the base, providing a basis for the movement of the cutting mechanism and enabling the cutting mechanism to perform cutting operations on large-sized fabrics over a wider range; the tension adjustment component in the feeding mechanism can adjust the fabric tension to ensure that the fabric is smoothly conveyed on the feeding conveyor belt, avoiding fabric wrinkles or deviations due to uneven tension, and ensuring the accuracy and stability of feeding; the first and second pressing components of the pressing mechanism can be raised and lowered independently to press different areas of fabric according to actual needs. When feeding, they are raised without affecting the fabric conveying, and when cutting, they are lowered to fix the fabric, preventing the fabric from moving during the cutting process, thus improving the cutting accuracy and quality; the cutting mechanism is slidably mounted on the crossbeam and driven by the first driving component to move along the length of the crossbeam, allowing the cutting blade to flexibly perform cutting operations on large-sized fabrics and adjust its position according to different cutting requirements; at the same time, the driving component drives the cutting blade to perform cutting, ensuring the smooth progress of the cutting action. This CNC cutting machine can greatly improve the cutting efficiency of large-format fabrics and significantly enhance the cutting accuracy and stability. It can adapt to different large-format fabric cutting needs and effectively solves the problems of low efficiency and insufficient accuracy of existing cutting equipment when cutting large-format fabrics.

[0008] Furthermore, the top of the base is provided with a first sliding rail, a second sliding rail, and a third sliding rail on both symmetrical sides along its length. The first sliding rail is parallel to and spaced apart from the second and third sliding rails, respectively. The second and third sliding rails are located on the same horizontal line and are symmetrically arranged along the center line of the base. The two ends of the crossbeam are slidably connected to the first sliding rail through a first connector and are equipped with a second driving member to drive it to move along the first sliding rail. The two ends of the first pressing assembly are slidably connected to the second sliding rail through a second connector and are equipped with a third driving member to drive the first pressing assembly to move along the second sliding rail. The two ends of the second pressing assembly are slidably connected to the third sliding rail through a third connector and are equipped with a fourth driving member to drive the second pressing assembly to move along the third sliding rail.

[0009] By adopting the above technical solution, the three sliding tracks on the base provide independent movement paths for the crossbeam and the two sets of pressing components. The crossbeam is connected to the first sliding track via the first connector and can move smoothly along the length of the base under the drive of the second drive component, ensuring that the cutting mechanism can cover the entire cutting area of ​​large-format fabrics. The first pressing component is connected to the second sliding track via the second connector and can move independently under the action of the third drive component, achieving precise pressing of the fabric at different positions. The second pressing component is connected to the third sliding track via the third connector and moves independently under the drive of the fourth drive component, working in conjunction with the first pressing component to further enhance the fixing effect on the fabric, preventing the fabric from shifting or wrinkling during the cutting process, thereby effectively improving the cutting accuracy and quality. This independent movement design allows the CNC cutting machine to flexibly adapt to the cutting needs of various large-format fabrics, significantly improving the practicality and cutting efficiency of the equipment.

[0010] Furthermore, the tension adjustment assembly is disposed at the feed end of the frame, and the tension adjustment assembly includes a support frame, on which a feeding roller for placing the rolled fabric and at least one tension adjustment roller for guiding and adjusting the tension of the fabric are disposed.

[0011] By adopting the above technical solution, the tension adjustment component is set at the feed end of the frame. The feeding roller on its support frame can hold the rolled fabric, and the tension adjustment roller can guide and adjust the fabric tension. This allows the tension of the fabric to be effectively controlled during the conveying process, avoiding problems such as wrinkles and deviations caused by uneven tension. It ensures that the fabric enters the feeding conveyor belt smoothly and steadily, improving the stability and accuracy of fabric conveying. This, in turn, facilitates the cutting mechanism to accurately cut large fabrics, reduces cutting errors, improves cutting quality and efficiency, and also enhances the equipment's adaptability to large fabrics.

[0012] Furthermore, the cutting mechanism also includes a blade holder on which the cutting blade is mounted. The driving assembly includes a lifting drive unit and a rotating drive unit. The lifting drive unit is used to drive the blade holder to perform a reciprocating lifting motion perpendicular to the fabric surface. The output end of the rotating drive unit is connected to the blade holder and is used to drive the blade holder and the cutting blade to rotate around an axis perpendicular to the fabric surface to adjust the cutting direction.

[0013] By adopting the above technical solution, the cutter holder of the cutting mechanism can perform reciprocating lifting motion perpendicular to the fabric surface under the action of the lifting drive unit, which enables the cutting blade to accurately cut into and out of the fabric, ensuring the accuracy of the cutting process. At the same time, the rotary drive unit can drive the cutter holder together with the cutting blade to rotate around an axis perpendicular to the fabric surface, which can flexibly adjust the cutting direction. This allows the CNC cutting machine to accurately and efficiently complete the cutting of large-format fabrics according to different cutting requirements and patterns, avoiding the limitations of traditional cutting methods when dealing with complex patterns, greatly improving the cutting accuracy and efficiency of large-format fabrics, and effectively solving the problems of insufficient accuracy and poor adaptability of existing equipment in cutting large-format fabrics.

[0014] Furthermore, a pulley seat is fixedly provided on each side of the blade holder. A pulley is installed on the pulley seat through a height adjustment mechanism. The two pulleys are symmetrically arranged on both sides of the cutting blade. The vertical installation position of the pulleys is adjusted by the height adjustment mechanism so that the pulleys are pressed against the fabric surface during cutting. The rolling direction of the pulleys is always consistent with the instantaneous cutting direction of the cutting blade.

[0015] By adopting the above technical solution, the symmetrically arranged pulleys on both sides of the cutter holder can press the fabric surface firmly during cutting, and the rolling direction of the pulleys is consistent with the instantaneous cutting direction of the cutting blade. This design ensures that the fabric remains flat during the cutting process and will not wrinkle or shift due to the cutting action of the cutting blade, thus guaranteeing the accuracy and quality of the cutting. At the same time, the height adjustment mechanism can flexibly adjust the vertical installation position of the pulleys according to the structure of different cutting blades and the characteristics of different fabrics, further improving the versatility and adaptability of the equipment. This design effectively solves the problem of wrinkles or shifts that easily occur during the cutting of large fabrics, further improving cutting efficiency, reducing repeated cutting or waste caused by uneven fabrics, and lowering production costs.

[0016] Furthermore, the height adjustment mechanism includes a vertically elongated hole provided on the pulley seat, through which the mounting shaft of the pulley passes and is locked to the pulley seat by a fastener.

[0017] By adopting the above technical solution, the height adjustment mechanism utilizes the vertical elongated hole on the pulley seat to provide an adjustable installation space for the pulley mounting shaft. By locking the mounting shaft in different positions with fasteners, the vertical installation position of the pulley can be conveniently and accurately adjusted, making the vertical position of the pulley match that of the cutting blade. This structure is simple and reliable, easy to operate and maintain, reduces the manufacturing cost and difficulty of use of the equipment, and at the same time ensures the stability and accuracy of pulley adjustment, which helps to improve the overall quality and efficiency of large-format fabric cutting.

[0018] Furthermore, both the first pressing assembly and the second pressing assembly include a pressing frame and at least one pressing roller. The pressing roller is rotatably mounted in the pressing frame, and the axial direction of the pressing roller is perpendicular to the feeding direction of the feeding conveyor belt. When the first pressing assembly and the second pressing assembly descend, the corresponding pressing roller presses against the fabric carried by the feeding conveyor belt.

[0019] By adopting the above technical solution, pressure rollers with axial directions perpendicular to the feeding direction are rotatably installed inside the pressure frames of the first and second pressure components. When the first and second pressure components descend, the two pressure rollers press against the fabric carried by the feeding conveyor belt. This design effectively fixes the fabric, preventing it from shifting or wrinkling during conveying and cutting, ensuring the fabric remains flat. This helps improve cutting accuracy, makes the cutting dimensions more accurate, reduces cutting errors, and improves the overall cutting efficiency and stability of the equipment.

[0020] Furthermore, the second connecting member includes a first sliding seat that slides in cooperation with the second sliding rail and a first driving cylinder fixed on the first sliding seat. The piston rod of the first driving cylinder is connected to the end of the first pressing assembly and drives the first pressing assembly to move up and down. The third connecting member includes a second sliding seat that slides in cooperation with the third sliding rail and a second driving cylinder fixed on the second sliding seat. The piston rod of the second driving cylinder is connected to the end of the second pressing assembly and drives the second pressing assembly to move up and down.

[0021] By adopting the above technical solution, the first sliding seat of the second connector cooperates with the second sliding rail, and the first drive cylinder is fixed on the first sliding seat, which can precisely drive the first pressing component to rise and fall, realizing flexible pressing of the fabric at different positions; the second sliding seat of the third connector cooperates with the third sliding rail, and the second drive cylinder is fixed on the second sliding seat, which can precisely drive the second pressing component to rise and fall, working in conjunction with the first pressing component to enhance the fixing effect on the fabric. This design allows the two sets of pressing components to independently and precisely control the rise and fall according to the actual cutting requirements, effectively preventing the fabric from shifting or wrinkling during the cutting process, further improving cutting accuracy and quality, and meeting the high-precision requirements of large-format fabric cutting.

[0022] Furthermore, a vacuum adsorption assembly is provided below the feeding conveyor belt in the working area of ​​the cutting mechanism. The vacuum adsorption assembly includes an adsorption chamber and a negative pressure pipe. The upper surface of the adsorption chamber is provided with multiple adsorption holes. The negative pressure pipe is connected to the adsorption chamber and connected to a vacuum source. The feeding conveyor belt is a breathable structure or the feeding conveyor belt has micropores.

[0023] By adopting the above technical solution, a vacuum adsorption component is installed below the feeding conveyor belt in the working area of ​​the cutting mechanism. On the one hand, the multiple adsorption holes on the upper surface of the adsorption chamber generate a uniform adsorption force. The negative pressure formed by the connection between the negative pressure pipe and the vacuum source ensures that the fabric on the feeding conveyor belt is firmly adsorbed. On the other hand, the breathable structure or the microporous feeding conveyor belt allows the adsorption force to act more effectively on the fabric, ensuring the stability of the fabric during the cutting process. The design of the vacuum adsorption component in this application avoids fabric displacement and wrinkles during cutting, thereby improving cutting accuracy and quality, ensuring accurate dimensions and neat edges of the cut fabric, and enhancing overall production efficiency and product quality.

[0024] Furthermore, the CNC cutting machine also includes a control component, which includes a programmable logic controller (PLC) and a touch screen that is communicatively connected to the PLC. The PLC is signal-connected to the feeding mechanism, the pressing mechanism, the cutting mechanism, and the first drive component, and is used to coordinate and control the feeding, pressing, cutting, and movement of the crossbeam.

[0025] By adopting the above technical solutions, the control components can significantly improve the automation level and ease of operation of the equipment. On the one hand, the programmable logic controller is connected to the feeding, pressing, and cutting mechanisms and the first drive component, which can accurately coordinate and control the feeding, pressing, cutting, and beam movement to ensure that each process is carried out in an orderly manner, avoid errors and delays caused by manual operation, and thus greatly improve cutting efficiency. On the other hand, the touch screen that is connected to the programmable logic controller makes it convenient for operators to input cutting graphics and parameters, reducing the difficulty of operation and enabling the equipment to quickly adapt to different production needs, achieving efficient and accurate cutting of large-format fabrics.

[0026] In summary, this application includes at least the following beneficial technical effects: (1) The pressing mechanism of this application is provided with two sets of independently lifting pressing components. The first pressing component and the second pressing component can be set across the frame and located above the feeding mechanism. When cutting, they press against the fabric, which helps to stabilize the fabric and prevent it from shifting or wrinkling during the conveying and cutting process, thereby improving the cutting accuracy of large-format flexible materials and solving the problem of insufficient cutting accuracy of large-format flexible materials. (2) The pulleys on both sides of the cutting mechanism blade holder of this application are pressed against the fabric surface during cutting, and the rolling direction is always consistent with the instantaneous cutting direction of the cutting blade, which can help the cutting blade to cut stably and effectively improve the cutting accuracy and efficiency of the cutting machine. (3) The vacuum adsorption component of this application is located below the feeding conveyor belt in the working area of ​​the cutting mechanism. It can adsorb the fabric through the adsorption holes, so that the fabric is more flat and adheres to the feeding conveyor belt, thereby improving the cutting accuracy and the equipment's adaptability to fabrics of different thicknesses and materials. This solves the problem of poor adaptability of existing CNC cutting equipment to large-format materials. (4) The feeding mechanism, pressing mechanism, cutting mechanism and other mechanisms of this application work together under the coordination of the control components to achieve precise coordination and automated control of feeding, pressing, cutting and beam movement, which greatly improves the overall performance and cutting efficiency of the equipment, reduces manual operation costs and errors, and can meet the demand for efficient and accurate large-scale fabric cutting. Attached Figure Description

[0027] Figure 1 This is a first structural schematic diagram of a CNC cutting machine for large-format fabrics provided in an embodiment of the present invention; Figure 2 This is a second structural schematic diagram of a CNC cutting machine for large-format fabrics provided in an embodiment of the present invention; Figure 3 This is an enlarged schematic diagram of the A-structure of a CNC cutting machine for large-format fabrics provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a vacuum adsorption component for a CNC cutting machine for large-format fabrics, provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures: 1. Frame; 11. Base; 12. Crossbeam; 13. First sliding rail; 14. Second sliding rail; 15. Third sliding rail; 121. First connecting piece; 2. Feeding mechanism; 21. Tension adjustment assembly; 22. Feeding conveyor belt; 211. Support frame; 212. Feeding roller; 213. First adjusting roller; 214. Second adjusting roller; 3. Cutting mechanism; 31. Cutting blade; 32. Drive assembly; 33. Blade holder; 34. Pulley seat; 35. Height adjustment mechanism; 36. Pulley; 321. Lifting drive unit; 322. Rotation drive unit; 351. Long hole; 352. Fastener; 361. Mounting shaft; 4. Fabric; 5. Pressing mechanism; 51. First pressing assembly; 52. Second pressing assembly; 53. Pressing frame; 54. Pressing roller; 511. Second connecting piece; 521. Third connecting piece; 5111. First sliding seat; 5112. First drive cylinder; 5211. Second sliding seat; 5212. Second drive cylinder; 6. Vacuum adsorption assembly; 61. Adsorption chamber; 62. Negative pressure pipeline; 63. Vacuum source; 611. Adsorption pore; 7. Control components; 71. Programmable logic controller; 72. Touch screen. Detailed Implementation

[0029] The following combination Figures 1-4 The technical solutions in the embodiments of the present invention will be described in detail.

[0030] See Figures 1-2 This invention provides a CNC cutting machine for large-format fabrics, including a frame 1, a feeding mechanism 2, and a cutting mechanism 3. The frame 1 includes a base 11 and a crossbeam 12 that moves along the length of the base 11. The feeding mechanism 2 includes a tension adjusting component 21 and a feeding conveyor belt 22. The feeding conveyor belt 22 is disposed above the base 11 and is used to carry and convey the fabric 4 along the feeding direction. The crossbeam 12 is disposed across the frame 1 and above the feeding conveyor belt 22. The cutting mechanism 3 is slidably disposed on the crossbeam 12, and a first driving member is disposed on the crossbeam 12 to drive the cutting mechanism 3 to move along the length of the crossbeam 12. The cutting mechanism 3 includes a cutting blade 31 and a driving component 32 for driving the cutting blade 31 to perform cutting.

[0031] Specifically, the tension adjustment component 21 is disposed at the feed end of the frame 1. The tension adjustment component 21 includes a support frame 211. The support frame 211 is provided with a feed roller 212 and at least one tension adjustment roller for guiding and adjusting the tension of the fabric 4 in sequence along the feeding direction. In this embodiment, the tension adjustment roller includes a first adjustment roller 213 and a second adjustment roller 214 arranged in sequence along the feeding direction. The height of the first adjustment roller 213 is lower than the height of the second adjustment roller 214 and the feed roller 212, which can effectively guide and adjust the tension of the fabric 4, reduce wrinkles and deviations caused by uneven tension, and ensure that the fabric 4 enters the feeding conveyor belt 22 smoothly.

[0032] To improve the adaptability of the cutting mechanism to cutting large fabrics, the top of the base 11 is symmetrically provided with first sliding rails 13 on both sides along its length direction. The two ends of the crossbeam 12 are slidably connected to the first sliding rails 13 through the first connectors 121, and are provided with second driving members to drive it to move along the first sliding rails 13, so that the cutting mechanism 3 can realize two-dimensional movement: that is, sliding along its length direction on the crossbeam 12 and sliding along the length direction of the base 11 together with the crossbeam 12.

[0033] To prevent the fabric 4 from moving during the cutting process and improve the cutting accuracy and quality, the cutting machine also includes a pressing mechanism 5. The pressing mechanism 5 includes a first pressing component 51 and a second pressing component 52 that can be lifted and lowered independently. The first pressing component 51 and the second pressing component 52 are both arranged horizontally on the frame 1 and located above the feeding conveyor belt 22.

[0034] To enable the first pressing assembly 51 and the second pressing assembly 52 to move independently along the length of the base 11, a second sliding rail 14 and a third sliding rail 15 are symmetrically arranged on both sides of the top of the base 11 along its length. The first sliding rail 13 is parallel to and spaced apart from the second sliding rail 14 and the third sliding rail 15, respectively. The second sliding rail 14 and the third sliding rail 15 are located on the same horizontal line and are symmetrically arranged along the center line of the base 11. The two ends of the first pressing assembly 51 are slidably connected to the second sliding rail 14 through the second connector 511, and are equipped with a third driving member to drive the first pressing assembly 51 to move along the second sliding rail 14. The two ends of the second pressing assembly 52 are slidably connected to the third sliding rail 15 through the third connector 521, and are equipped with a fourth driving member to drive the second pressing assembly 52 to move along the third sliding rail 15.

[0035] Specifically, the first pressing assembly 51 and the second pressing assembly 52 each include a pressing frame 53 and at least one pressing roller 54. The pressing roller 54 is rotatably installed in the pressing frame 53, and the axial direction of the pressing roller 54 is perpendicular to the feeding direction of the feeding conveyor belt 22. When the first pressing assembly 51 and the second pressing assembly 52 descend, the corresponding pressing roller 54 presses against the fabric 4 carried by the feeding conveyor belt 22.

[0036] To improve the pressing effect and protect the fabric, as an optional implementation, the outer periphery of the pressing roller 54 is covered with an elastic anti-slip layer. As a preferred option, the elastic anti-slip layer is made of polyurethane elastomer. Polyurethane can provide sufficient friction to prevent the fabric from sliding, and its soft texture can avoid leaving indentations on the fabric surface.

[0037] To enable the lifting and lowering of the first pressing assembly 51 and the second pressing assembly 52, the second connecting member 511 includes a first sliding seat 5111 that slides in cooperation with the second sliding rail 14 and a first driving cylinder 5112 fixed on the first sliding seat 5111. The piston rod of the first driving cylinder 5112 is connected to the end of the first pressing assembly 51 and drives the first pressing assembly 51 to move up and down. The third connecting member 521 includes a second sliding seat 5211 that slides in cooperation with the third sliding rail 15 and a second driving cylinder 5212 fixed on the second sliding seat 5211. The piston rod of the second driving cylinder 5212 is connected to the end of the second pressing assembly 52 and drives the second pressing assembly 52 to move up and down.

[0038] In this embodiment, the first driving member, the second driving member, the third driving member, and the fourth driving member are driven by rodless cylinders.

[0039] To improve the cutting mechanism's flexibility in cutting large fabrics, refer to... Figure 3The cutting mechanism 3 also includes a blade holder 33, on which the cutting blade 31 is mounted. The drive assembly 32 includes a lifting drive unit 321 and a rotating drive unit 322. The lifting drive unit 321 is used to drive the blade holder 33 to perform reciprocating lifting motion perpendicular to the fabric surface. The output end of the rotating drive unit 322 is connected to the blade holder 33 and is used to drive the blade holder 33 together with the cutting blade 31 to rotate around an axis perpendicular to the fabric surface to adjust the cutting direction and effectively cut fabrics of different shapes.

[0040] In this embodiment, the lifting drive unit 321 is a rodless cylinder used to realize the vertical feed of the tool holder 33; the rotation drive unit 322 includes a servo motor and a worm gear reducer connected thereto, used to drive the tool holder 33 to perform precise rotational positioning with self-locking capability.

[0041] To ensure that the fabric remains flat during the cutting process and does not wrinkle or shift due to the cutting action of the cutter, a pulley seat 34 is fixedly installed on each side of the cutter holder 33. A pulley 36 is installed on the pulley seat 34 through a height adjustment mechanism 35. The two pulleys 36 are symmetrically arranged on both sides of the cutter 31. The vertical installation position of the pulleys 36 is adjusted by the height adjustment mechanism 35 so that the pulleys 36 are pressed against the surface of the fabric 4 during cutting. The rolling direction of the pulleys 36 is always consistent with the instantaneous cutting direction of the cutter 31, thereby ensuring the accuracy and quality of the cutting.

[0042] To improve the applicability of the cutting mechanism, the height of the pulley 36 can be adjusted by the height adjustment mechanism 35. The height adjustment mechanism 35 includes a vertical elongated hole 351 and a fastener 352 provided on the pulley seat 34. The elongated hole 351 can adjust the height of the pulley 36. The mounting shaft 361 of the pulley 36 passes through the elongated hole 351 and is locked to the pulley seat 34 by the fastener 352. In this embodiment, the fastener 352 is a nut.

[0043] As an optional embodiment of the present invention, the cutting blade 31 can be selected according to the material and process requirements of the fabric to be processed, such as a circular blade, a vibrating blade, a laser cutting head, and an ultrasonic blade.

[0044] To further improve the cutting accuracy of the fabric cutting machine and effectively prevent fabric displacement during the cutting process, please refer to... Figure 4 A vacuum adsorption assembly 6 is provided below the feeding conveyor belt 22 in the working area of ​​the cutting mechanism 3. The vacuum adsorption assembly 6 includes an adsorption chamber 61 and a negative pressure pipe 62. The upper surface of the adsorption chamber 61 is provided with multiple adsorption holes 611. The negative pressure pipe 62 is connected to the adsorption chamber 61 and connected to the vacuum source 63. The feeding conveyor belt 22 is a breathable structure or the feeding conveyor belt has micropores.

[0045] As an optional implementation, the vacuum source 63 can be a vacuum pump, centrifugal fan, etc.

[0046] To achieve full automation of the cutting machine, the cutting machine also includes a control component 7, which includes a programmable logic controller 71 and a touch screen 72 that is communicatively connected to the programmable logic controller 71. The programmable logic controller 71 is signal-connected to the feeding mechanism 2, the cutting mechanism 3, the pressing mechanism 5 and the first drive component. The operator can realize feeding, pressing, cutting and crossbeam movement by operating the touch screen 72.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A CNC cutting machine for large-format fabrics, characterized in that: include: The frame includes a base and crossbeams; The feeding mechanism includes a tension adjustment component and a feeding conveyor belt, which is disposed above the base and is used to carry and convey the fabric along the feeding direction. The pressing mechanism includes a first pressing component and a second pressing component that can be lifted and lowered independently. The first pressing component, the second pressing component, and the crossbeam are respectively arranged across the frame and above the feeding conveyor belt. A cutting mechanism is slidably mounted on a crossbeam. A first driving member is provided on the crossbeam to drive the cutting mechanism to move along its length direction. The cutting mechanism includes a cutting blade and a driving assembly that drives the cutting blade to perform cutting. The crossbeam, the first pressing assembly, and the second pressing assembly can move independently along the length of the base.

2. The CNC cutting machine for large-format fabrics according to claim 1, characterized in that: The top of the base is provided with a first sliding rail, a second sliding rail, and a third sliding rail on both symmetrical sides along its length. The first sliding rail is parallel to and spaced apart from the second and third sliding rails, respectively. The second and third sliding rails are located on the same horizontal line and are symmetrically arranged along the center line of the base. The two ends of the crossbeam are slidably connected to the first sliding rail through a first connector and are provided with a second driving member to drive it to move along the first sliding rail. The two ends of the first pressing assembly are slidably connected to the second sliding rail through a second connector and are provided with a third driving member to drive the first pressing assembly to move along the second sliding rail. The two ends of the second pressing assembly are slidably connected to the third sliding rail through a third connector and are provided with a fourth driving member to drive the second pressing assembly to move along the third sliding rail.

3. A CNC cutting machine for large-format fabrics according to claim 1, characterized in that: The tension adjustment assembly is located at the feed end of the frame. The tension adjustment assembly includes a support frame, on which a feeding roller for placing rolled fabric and at least one tension adjustment roller for guiding and adjusting the tension of the fabric are provided.

4. A CNC cutting machine for large-format fabrics according to claim 1, characterized in that: The cutting mechanism further includes a blade holder on which the cutting blade is mounted. The driving assembly includes a lifting drive unit and a rotating drive unit. The lifting drive unit is used to drive the blade holder to perform a reciprocating lifting motion perpendicular to the fabric surface. The output end of the rotating drive unit is connected to the blade holder and is used to drive the blade holder and the cutting blade to rotate around an axis perpendicular to the fabric surface to adjust the cutting direction.

5. A CNC cutting machine for large-format fabrics according to claim 4, characterized in that: A pulley seat is fixedly provided on each side of the blade holder. A pulley is installed on the pulley seat through a height adjustment mechanism. The two pulleys are symmetrically arranged on both sides of the cutting blade. The vertical installation position of the pulleys is adjusted by the height adjustment mechanism so that the pulleys are pressed against the fabric surface during cutting. The rolling direction of the pulleys is always consistent with the instantaneous cutting direction of the cutting blade.

6. A CNC cutting machine for large-format fabrics according to claim 5, characterized in that: The height adjustment mechanism includes a vertically elongated hole on the pulley seat, through which the mounting shaft of the pulley passes and is locked to the pulley seat by a fastener.

7. A CNC cutting machine for large-format fabrics according to claim 2, characterized in that: Both the first pressing assembly and the second pressing assembly include a pressing frame and at least one pressing roller. The pressing roller is rotatably mounted in the pressing frame, and the axial direction of the pressing roller is perpendicular to the feeding direction of the feeding conveyor belt. When the first pressing assembly and the second pressing assembly descend, the corresponding pressing roller presses against the fabric carried by the feeding conveyor belt.

8. A CNC cutting machine for large-format fabrics according to claim 7, characterized in that: The second connecting member includes a first sliding seat that slides with the second sliding rail and a first driving cylinder fixed on the first sliding seat. The piston rod of the first driving cylinder is connected to the end of the first pressing assembly and drives the first pressing assembly to move up and down. The third connecting member includes a second sliding seat that slides with the third sliding rail and a second driving cylinder fixed on the second sliding seat. The piston rod of the second driving cylinder is connected to the end of the second pressing assembly and drives the second pressing assembly to move up and down.

9. A CNC cutting machine for large-format fabrics according to claim 1, characterized in that: A vacuum adsorption assembly is provided below the feeding conveyor belt in the working area of ​​the cutting mechanism. The vacuum adsorption assembly includes an adsorption chamber and a negative pressure pipe. The upper surface of the adsorption chamber is provided with multiple adsorption holes. The negative pressure pipe is connected to the adsorption chamber and connected to a vacuum source. The feeding conveyor belt is a breathable structure or has micropores.

10. A CNC cutting machine for large-format fabrics according to claim 1, characterized in that: It also includes a control component, which includes a programmable logic controller and a touch screen communicatively connected to the programmable logic controller; the programmable logic controller is signal-connected to the feeding mechanism, the pressing mechanism, the cutting mechanism and the first drive component, and is used to coordinate and control the feeding, pressing, cutting and the movement of the crossbeam.

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