A precise measuring device for cloth cutting

Abstract

The application relates to the technical field of laser cutting, in particular to a precise measuring device for cloth cutting, which comprises a workbench, a first through groove and a second through groove are arranged at the upper end of the workbench, and a floating assembly is arranged in the first through groove; the floating assembly comprises vertical plates, a fixed shell and a mounting frame, two vertical plates are symmetrically fixedly connected in the first through groove, a rolling groove is arranged on one side of each of the two vertical plates, and the mounting frame is rollingly connected between the two vertical plates through balls. The workbench is provided with the floating assembly, cloth is taken out by the winding assembly, passes around the upper end of the floating roller of the floating assembly, downward force is applied to the floating roller in the traction process of the cloth, the mounting plate is pushed to move downward, the gas in the confluence cavity is compressed, the pressure in the cavity is increased, the pressure change in the confluence cavity is detected in real time through the pressure sensor, the tension value currently borne by the cloth can be obtained, real-time basis is provided for subsequent tension regulation, and therefore the cloth cutting precision is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a precision measuring device for fabric cutting. Background Technology

[0002] Using precise measuring equipment before fabric cutting is crucial, primarily to ensure the quality and consistency of the final product. Precise measuring equipment ensures that each cut portion conforms to design specifications, thereby guaranteeing the dimensional accuracy of garments or other fabric products. By using precise measuring tools and techniques, the possibility of incorrect cutting can be reduced, avoiding waste of materials and time. This is especially important in mass production, as any small error can become a significant problem when magnified to thousands of products.

[0003] When fabric is unwound from the roll and laid flat, it is prone to elastic deformation under tension due to its inherent extensibility. This deformation will spring back after cutting, causing the actual cut piece size to deviate from the measured value, which in turn directly affects the cutting accuracy. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a precise measuring device for fabric cutting.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a precision measuring device for fabric cutting, including a worktable, a winding assembly installed on one side of the worktable, a traction assembly and a laser cutting assembly installed on the other side, a first pressure roller, a second pressure roller and a third pressure roller sequentially fixedly connected to the upper middle part of the worktable along the fabric conveying direction, a first through groove and a second through groove opened at the upper end of the worktable, an adjustment assembly installed inside the second through groove, and a floating assembly installed inside the first through groove; The floating assembly includes uprights, a fixed shell, and a mounting frame. Two uprights are symmetrically fixedly connected inside a first through slot. Roller grooves are formed on the adjacent sides of the two uprights. The mounting frame is connected between the two uprights by ball bearings. A floating roller is rotatably connected inside the mounting frame. An external magnet is fixedly connected to the lower end of the mounting frame. The fixed shell is fixedly connected to the lower opening of the first through slot. An aluminum alloy plate is fixedly connected to the upper interior of the fixed shell. A manifold cavity is provided at the lower interior of the fixed shell. A pressure sensor and a temperature sensor are fixedly connected to the lower interior of the manifold cavity. Two through holes are symmetrically formed at the upper end of the manifold cavity. A mounting plate is fixedly connected to the upper end of the two through holes via a corrugated pipe. An internal magnet is fixedly connected to the upper end of the mounting plate. The internal magnet and the external magnet are magnetically coupled together.

[0006] Specifically, an air valve is installed on the side wall of the manifold.

[0007] Specifically, a pressure stabilizing hole is provided on the middle side wall of the fixed shell, and a dust filter cotton is provided inside the pressure stabilizing hole.

[0008] Specifically, the first through groove is located between the first pressure roller and the second pressure roller, and the second through groove is located between the second pressure roller and the third pressure roller.

[0009] Specifically, a wool felt sealing ring is fixedly connected to the outer wall of the mounting frame. The thickness of the wool felt sealing ring is slightly larger than the gap between the outer wall of the mounting frame and the inner wall of the first through groove. Its free end elastically abuts against the inner wall of the first through groove and the outer wall of the upright plate to prevent fabric lint and dust from passing through the first through groove and entering the interior of the fixed shell.

[0010] Specifically, the ball bearings are tactilely connected to the outer wall of the mounting bracket, with some of the ball bearings protruding and the protruding portion tactilely connected to the corresponding groove.

[0011] Specifically, the winding assembly includes two support plates, which are symmetrically fixedly connected to the upper end of one side of the worktable. A winding roller is rotatably connected between the upper ends of the two support plates. A first motor is fixedly connected to one of the support plates, and the output end of the first motor is connected to one end of the winding roller.

[0012] Specifically, the adjustment assembly consists of a lifting frame, an adjusting roller, and a first hydraulic cylinder. The lifting frame is slidably connected inside the second through slot, the adjusting roller is rotatably connected inside the lifting frame, and the first hydraulic cylinder is fixedly connected inside the worktable. The piston rod end of the first hydraulic cylinder is fixedly connected to the lower end of the lifting frame.

[0013] Specifically, the laser cutting assembly consists of a fixed frame, a second motor, a screw, a threaded block, and a laser cutter. The fixed frame is fixedly connected to the upper side of the other side of the worktable. The second motor is fixedly connected to the outer wall of the fixed frame. The screw is rotatably connected inside the fixed frame, and one end of the screw is connected to the output end of the second motor. The threaded block is threadedly connected to the middle of the screw. The laser cutter is fixedly connected to the lower end of the threaded block.

[0014] Specifically, the traction assembly includes a second hydraulic cylinder, which is fixedly connected to the inside of the other side of the workbench. The piston rod end of the second hydraulic cylinder passes through the side wall of the workbench and is fixedly connected to a moving plate. The upper end of the moving plate is fixedly connected to a clamp via a connecting rod.

[0015] The beneficial effects of this invention are: (1) The present invention has a floating component on the worktable. After the fabric is unwound by the winding component, it passes over the upper end of the floating roller of the floating component. During the traction process, the fabric exerts a downward force on the floating roller, pushing the mounting plate down and compressing the gas in the manifold cavity, thereby increasing the pressure in the cavity. By detecting the pressure change in the manifold cavity in real time through the pressure sensor, the current tension value of the fabric can be obtained, providing a real-time basis for subsequent tension control, thereby effectively improving the fabric cutting accuracy.

[0016] (2) The outer magnet and the inner magnet of the present invention are both located inside the fixed shell. Their relative movement is completed in the closed space, which can effectively avoid the interference of environmental factors such as dust and fluff in the surrounding air, ensure the stability of magnetic force transmission and the reliability of detection signal, thereby significantly improving measurement accuracy.

[0017] (3) In this invention, the mounting frame for installing the floating roller is connected between the two upright plates by rolling balls, which converts sliding friction into rolling friction, effectively reducing the frictional resistance during the movement of the mounting frame, ensuring the sensitivity of the floating roller to changes in fabric tension, and thus improving the overall measurement accuracy. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the workbench structure of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 for Figure 3 Enlarged view of the area at point A in the middle; Figure 5 This is a front sectional view of the present invention; Figure 6 This is a schematic diagram of the traction component structure of the present invention.

[0020] In the diagram: 1. Workbench; 2. Support plate; 3. Take-up roller; 4. First motor; 5. First pressure roller; 6. Second pressure roller; 7. Third pressure roller; 8. First through groove; 9. Second through groove; 10. Vertical plate; 11. Fixed shell; 12. Roller groove; 13. Mounting frame; 14. Floating roller; 15. Ball bearing; 16. External magnet; 17. Pressure sensor; 18. Temperature sensor; 19. Through hole; 20. Corrugated pipe; 21. Mounting plate; 22. Internal magnet; 23. Aluminum alloy plate; 24. Air valve; 25. Lifting frame; 26. Adjusting roller; 27. First hydraulic cylinder; 28. Fixed frame; 29. ​​Second motor; 30. Screw; 31. Threaded block; 32. Laser cutter; 33. Second hydraulic cylinder; 34. Moving plate; 35. Connecting rod; 36. Chuck; 37. Manifold. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-6 As shown, the present invention provides the following technical solution: Example 1: A precision measuring device for fabric cutting includes a workbench 1. A winding assembly is installed on one side of the workbench 1, and a traction assembly and a laser cutting assembly are installed on the other side. A first pressure roller 5, a second pressure roller 6, and a third pressure roller 7 are sequentially fixedly connected to the upper middle part of the workbench 1 along the fabric conveying direction. A first through groove 8 and a second through groove 9 are provided at the upper end of the workbench 1. The first through groove 8 is located between the first pressure roller 5 and the second pressure roller 6, and the second through groove 9 is located between the second pressure roller 6 and the third pressure roller 7. An adjustment assembly is installed inside the second through groove 9. The winding assembly includes two support plates 2, which are symmetrically and fixedly connected to the upper end of one side of the workbench 1. A winding roller 3 is rotatably connected between the upper ends of the two support plates 2. A first motor 4 is fixedly connected to one of the support plates 2, and the output end of the first motor 4 is connected to one end of the winding roller 3. The adjustment assembly consists of a lifting frame 25, an adjusting roller 26, and a first hydraulic cylinder 27. The lifting frame 25 is slidably connected inside the second through groove 9, the adjusting roller 26 is rotatably connected inside the lifting frame 25, and the first hydraulic cylinder 27 is fixedly connected inside the worktable 1. The piston rod end of the first hydraulic cylinder 27 is fixedly connected to the lower end of the lifting frame 25. The laser cutting assembly consists of a fixed frame 28, a second motor 29, a screw 30, a threaded block 31, and a laser cutter 32. The fixed frame 28 is fixedly connected to the upper end of the other side of the worktable 1. The second motor 29 is fixedly connected to the outer wall of the fixed frame 28. The screw 30 is rotatably connected to the inside of the fixed frame 28, and one end is connected to the output end of the second motor 29. The threaded block 31 is threadedly connected to the middle of the screw 30. The laser cutter 32 is fixedly connected to the lower end of the threaded block 31. The traction assembly includes a second hydraulic cylinder 33, which is fixedly connected to the inside of the other side of the workbench 1. The piston rod end of the second hydraulic cylinder 33 passes through the side wall of the workbench 1 and is fixedly connected to a moving plate 34. The upper end of the moving plate 34 is fixedly connected to a chuck 36 via a connecting rod 35.

[0023] In use, the first motor 4 is started to drive the take-up roller 3 to rotate, and the fabric roll is placed on the take-up roller 3 between the support plates 2 to complete the unwinding of the fabric. The fabric passes through the first pressure roller 5, the second pressure roller 6, and the third pressure roller 7 in sequence. The first hydraulic cylinder 27 is started to drive the lifting frame 25 to rise and fall in the second through groove 9, thereby adjusting the height of the adjusting roller 26 to match the fabric conveying path. The end of the fabric is held by the clamp 36 of the traction component. The second hydraulic cylinder 33 pushes the moving plate 34 and the connecting rod 35 to drive the clamp 36 to pull the fabric to feed at a uniform speed. The second motor 29 is run to drive the screw 30 to rotate, so that the threaded block 31 carries the laser cutter 32 to move laterally along the fixed frame 28 to complete the laser cutting operation on the fabric that has been conveyed to the position.

[0024] Example 2: The technical solution in this example that differs from Example 1 includes: a floating component installed inside the first through slot 8; The floating assembly includes two upright plates 10, a fixed housing 11, and a mounting bracket 13. Two upright plates 10 are symmetrically fixedly connected inside the first through groove 8. Each upright plate 10 has a roller groove 12 on its adjacent side. The mounting bracket 13 is rotatably connected between the two upright plates 10 via balls 15. The balls 15 are rotatably connected to the outer wall of the mounting bracket 13, with some protruding portions that rotatably connect to their corresponding roller grooves 12. A floating roller 14 is rotatably connected inside the mounting bracket 13. An external magnet 16 is fixedly connected to the lower end of the mounting bracket 13. The fixed housing 11 is fixedly connected to the lower opening of the first through groove 8. A pressure stabilizing hole is provided on the middle side wall of the shell 11. The pressure stabilizing hole is filled with dust filter cotton. An aluminum alloy plate 23 is fixedly connected to the upper part of the shell 11. A manifold 37 is provided at the lower part of the shell 11. A pressure sensor 17 and a temperature sensor 18 are fixedly connected to the lower part of the manifold 37. Two through holes 19 are symmetrically opened at the upper part of the manifold 37. A mounting plate 21 is fixedly connected to the upper part of the two through holes 19 through a bellows 20. An inner magnet 22 is fixedly connected to the upper part of the mounting plate 21. The inner magnet 22 and the outer magnet 16 are magnetically coupled. An air valve 24 is installed on the side wall of the manifold 37. A wool felt sealing ring is fixedly connected to the outer wall of the mounting frame 13. The thickness of the wool felt sealing ring is slightly larger than the gap between the outer wall of the mounting frame 13 and the inner wall of the first through groove 8. Its free end elastically abuts against the inner wall of the first through groove 8 and the outer wall of the upright plate 10 to prevent fabric lint and dust from passing through the first through groove 8 and entering the interior of the fixed shell 11.

[0025] In use, after the fabric is unwound from the take-up roller 3, it first passes around the first pressure roller 5 and then rests on the upper end of the float roller 14. The traction force of the fabric presses down on the float roller 14, causing the mounting frame 13 to slide downwards along the groove 12 of the vertical plate 10 via the ball bearings 15. The outer magnet 16 at the bottom of the mounting frame 13 magnetically couples and pulls the inner magnet 22 downwards. During this process, the aluminum alloy plate 23 also has magnetic shielding and heat insulation functions, isolating the external magnetic field and temperature fluctuations from interfering with the air pressure and magnetic coupling inside the manifold 37. The mounting plate 21, which mounts the inner magnet 22, pushes the bellows 20 to compress the air inside the manifold 37. The pressure sensor 17 and temperature sensor 18 inside the manifold 37... Sensor 18 collects real-time pressure and temperature data within the cavity to calculate the real-time tension of the fabric. The pressure stabilizing hole on the side wall of the fixed shell 11 contains dust filter cotton to maintain the basic air pressure within the cavity. The pressure stabilizing hole maintains the basic atmospheric pressure of the manifold. The dust filter cotton prevents external dust from entering the cavity, ensuring a stable air pressure reference. The wool felt sealing ring prevents flying lint and dust from entering the fixed shell 11. After the tension data is fed back, it works with the adjusting roller 26 and traction assembly to adjust the tightness of the fabric. Subsequently, the laser cutter 32 completes precise cutting based on the fabric size under stable tension. During equipment maintenance or long-term shutdown, the air valve 24 is opened to ventilate and depressurize the manifold, and to calibrate the zero point of the pressure sensor.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision measuring device for fabric cutting, comprising a worktable (1), wherein a winding assembly is installed on one side of the worktable (1), and a traction assembly and a laser cutting assembly are installed on the other side; a first pressure roller (5), a second pressure roller (6), and a third pressure roller (7) are sequentially fixedly connected to the upper middle part of the worktable (1) along the fabric conveying direction; a first through groove (8) and a second through groove (9) are provided at the upper end of the worktable (1); an adjustment assembly is installed inside the second through groove (9); characterized in that, A floating component is installed inside the first through slot (8); The floating assembly includes upright plates (10), a fixed shell (11), and a mounting bracket (13). Two upright plates (10) are symmetrically fixedly connected inside the first through groove (8). Roller grooves (12) are opened on the adjacent sides of the two upright plates (10). The mounting bracket (13) is rotatably connected between the two upright plates (10) via ball bearings (15). A floating roller (14) is rotatably connected inside the mounting bracket (13). An external magnet (16) is fixedly connected to the lower end of the mounting bracket (13). The fixed shell (11) is fixedly connected to the lower opening of the first through groove (8). An aluminum alloy plate (23) is fixedly connected to the upper part of the interior of the fixed shell (11). A manifold (37) is provided at the lower part of the interior of the fixed shell (11). A pressure sensor (17) and a temperature sensor (18) are fixedly connected to the lower part of the interior of the manifold (37). Two through holes (19) are symmetrically opened at the upper part of the manifold (37). An mounting plate (21) is fixedly connected to the upper part of the two through holes (19) through a corrugated pipe (20). An inner magnet (22) is fixedly connected to the upper part of the mounting plate (21). The inner magnet (22) and the outer magnet (16) are magnetically coupled together.

2. The precise measuring device for fabric cutting according to claim 1, characterized in that: An air valve (24) is installed on the side wall of the manifold (37).

3. The precise measuring device for fabric cutting according to claim 1, characterized in that: A pressure stabilizing hole is provided on the middle side wall of the fixed shell (11), and a dust filter cotton is provided inside the pressure stabilizing hole.

4. The precise measuring device for fabric cutting according to claim 1, characterized in that: The first through groove (8) is located between the first pressure roller (5) and the second pressure roller (6), and the second through groove (9) is located between the second pressure roller (6) and the third pressure roller (7).

5. The precise measuring device for fabric cutting according to claim 1, characterized in that: A wool felt sealing ring is fixedly connected to the outer wall of the mounting frame (13). The thickness of the wool felt sealing ring is slightly greater than the gap between the outer wall of the mounting frame (13) and the inner wall of the first through groove (8). Its free end elastically abuts against the inner wall of the first through groove (8) and the outer wall of the upright plate (10) to prevent fabric lint and dust from passing through the first through groove (8) and entering the interior of the fixed shell (11).

6. The precise measuring device for fabric cutting according to claim 1, characterized in that: The ball (15) is rolled in the outer wall of the mounting bracket (13), and the ball (15) has a portion protruding, and the protruding portion is rolled in the corresponding groove (12).

7. The precise measuring device for fabric cutting according to claim 1, characterized in that: The winding assembly includes two support plates (2), which are symmetrically fixedly connected to the upper end of one side of the workbench (1). A winding roller (3) is rotatably connected between the upper ends of the two support plates (2). A first motor (4) is fixedly connected to one of the support plates (2), and the output end of the first motor (4) is connected to one end of the winding roller (3).

8. The precise measuring device for fabric cutting according to claim 1, characterized in that: The adjustment assembly consists of a lifting frame (25), an adjusting roller (26), and a first hydraulic cylinder (27). The lifting frame (25) is slidably connected inside the second through groove (9). The adjusting roller (26) is rotatably connected inside the lifting frame (25). The first hydraulic cylinder (27) is fixedly connected inside the worktable (1). The piston rod end of the first hydraulic cylinder (27) is fixedly connected to the lower end of the lifting frame (25).

9. The precise measuring device for fabric cutting according to claim 1, characterized in that: The laser cutting assembly consists of a fixed frame (28), a second motor (29), a screw (30), a threaded block (31), and a laser cutter (32). The fixed frame (28) is fixedly connected to the upper side of the workbench (1). The second motor (29) is fixedly connected to the outer wall of the fixed frame (28). The screw (30) is rotatably connected to the inside of the fixed frame (28), and one end is connected to the output end of the second motor (29). The threaded block (31) is threadedly connected to the middle part of the screw (30). The laser cutter (32) is fixedly connected to the lower end of the threaded block (31).

10. A precise measuring device for fabric cutting according to claim 1, characterized in that: The traction assembly includes a second hydraulic cylinder (33), which is fixedly connected to the inside of the other side of the workbench (1). The piston rod end of the second hydraulic cylinder (33) passes through the side wall of the workbench (1) and is fixedly connected to a moving plate (34). The upper end of the moving plate (34) is fixedly connected to a chuck (36) via a connecting rod (35).

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