Unwinding mechanism of cloth cutting machine

Abstract

The utility model provides an unwinding mechanism of a cloth cutting machine. The unwinding mechanism is used for solving the problem that in the prior art, cloth conveying precision is not high. An unwinding mechanism of a cloth cutting machine comprises an unwinding frame, a supporting frame is arranged on one side of the unwinding frame, an air expansion shaft is rotationally connected to the supporting frame, cloth is wound on the air expansion shaft through a sleeve, the air expansion shaft is connected with a rotating damper, rotating shafts are arranged at the two ends of the unwinding frame in a penetrating mode and connected with the unwinding frame through torsional springs, and connecting rods are arranged at the ends, close to each other, of the rotating shafts. A driving roller and a driven roller which are parallel to each other are rotationally connected between the connecting rods, teeth and tooth grooves which are meshed with each other are arranged on the side walls of the driving roller and the driven roller in the circumferential direction, and the driving roller is connected with a driving motor. Through the teeth and the tooth grooves which are meshed with each other and arranged on the side walls of the driving roller and the driven roller, the contact area between cloth and the driven roller and between the cloth and the driving roller is increased, and accurate control over the cloth in the conveying process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth cutting machines, in particular to an unwinding mechanism of a cloth cutting machine. Background Art

[0002] Fabric cutting machines are widely used in the clothing, textile, leather, plastic leather and other industries to cut cotton, linen, synthetic leather, silk, knitwear and other materials. They can also cut carpets, towels, sheets, plastic films and other materials. In the textile and clothing manufacturing industry, the unwinding process of fabric is one of the key steps in the production process. Because fabrics are generally smooth and thin, traditional unwinding mechanisms often face problems such as unstable fabric tension control and low fabric transmission accuracy. These problems will cause the fabric to become loose, wrinkled, and unevenly stretched, which in turn affects the size, quality and production efficiency of the final product. Utility Model Content

[0003] The utility model provides an unwinding mechanism for a cloth cutting machine, which solves the problem of low cloth transmission accuracy in the prior art.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A cloth cutting machine unwinding mechanism comprises an unwinding frame, a supporting frame is provided on one side of the unwinding frame, an air shaft is rotatably connected to the supporting frame, cloth is wound on the air shaft through a sleeve, the air shaft is connected to a rotation damper, rotating shafts are passed through both ends of the unwinding frame, the rotating shaft is rotatably connected to the unwinding frame through a torsion spring, connecting rods are provided at the ends of the rotating shafts close to each other, a driving roller and a driven roller parallel to each other are rotatably connected between the connecting rods, the side walls of the driving roller and the driven roller are circumferentially provided with teeth and tooth grooves that mesh with each other, and the driving roller is connected to a driving motor.

[0006] Furthermore, one end of the connecting rod is provided with a slide groove, and both ends of the driven roller slide along the slide groove through a rotating frame, and the rotating frame is fixedly connected to the connecting rod through a telescopic device, and the rotating frame is rotatably connected to the end of the driven roller through a bearing. The telescopic device can accurately control the gap between the driving roller and the driven roller, making it more convenient to insert the cloth, while ensuring the accuracy of the cloth unwinding.

[0007] Furthermore, the support frame includes two brackets, one of which includes an upper fixing frame and a lower fixing frame, the top of the lower fixing frame is provided with a fixing shaft, and the upper fixing frame is provided with a rotating hole that cooperates with the fixing shaft. Since the inflatable shaft does not need to be completely disassembled when replacing the sleeve, the maintenance and replacement time is greatly reduced. The labor of manual handling and disassembly is reduced, and the equipment wear caused by frequent and complete disassembly of the inflatable shaft is avoided.

[0008] Furthermore, a limit baffle is fixed at one end of the inflatable shaft close to the upper fixed frame, a push plate is provided between the limit baffle and the end of the sleeve, a handle is provided on the push plate, and scales are provided at both ends of the inflatable shaft. The design of the push plate allows for quick removal and replacement of the sleeve, reduces the time required for replacing the reel, and improves work efficiency. By simplifying the process of replacing the reel, the equipment can be restored to production faster, thereby improving the utilization rate of the equipment.

[0009] Furthermore, the unwinding frame is provided with a cloth cutting workbench, a flattening roller is rotated above the cloth cutting workbench, and a gap for the cloth to pass through is provided between the side wall of the flattening roller and the cloth cutting workbench. Due to the cooperation between the flattening roller and the cloth cutting workbench, the cloth can be flattened during the transmission process without the need for additional processing steps, which not only reduces the waiting time in the production process, but also improves the overall production efficiency and helps to improve the quality of subsequent processing or use.

[0010] Furthermore, the flattening roller is evenly distributed with steam holes in the circumference, and a steam heating device connected to the steam holes is provided inside the flattening roller. The steam heating device can effectively transfer heat to the flattening roller, so that the cloth is evenly hot-pressed when passing through the flattening roller. The hot-pressing effect can eliminate wrinkles and uneven parts in the cloth, and significantly improve the flatness of the cloth.

[0011] Furthermore, a roller meter is provided between the driving roller and the air shaft. The tension between the driving roller and the air shaft can ensure the stability of the fabric during the unwinding process, avoid the fabric from sliding or jumping during the measurement process, and ensure the reliability of the measurement result.

[0012] The technical solution can produce beneficial effects.

[0013] The utility model increases the contact area between the cloth and the driven roller and the driving roller by means of the meshing teeth and tooth grooves arranged on the side walls of the driving roller and the driven roller, thereby ensuring the precise control of the cloth during the transmission process, thereby improving the stability and accuracy of the cloth transmission. The setting of the air shaft and the rotary damper can ensure that the driving roller always has a certain tension when stretching the cloth, thereby preventing the cloth from being relaxed or overstretched during the unwinding process. The tension of the cloth can be adjusted within a certain range by the cooperation of the torsion spring and the rotary damper, thereby adapting to cloths of different materials and thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 for Figure 2 Isometric section view in the A direction;

[0018] Figure 4 for Figure 2 Isometric section view in the B direction;

[0019] Figure 5 It is a partial exploded view of the support frame of the utility model;

[0020] Figure 6 for Figure 3 A partial enlarged schematic diagram of point C in the middle.

[0021] Among them: 1. unwinding rack, 2. supporting frame, 3. inflatable shaft, 4. sleeve, 5. cloth, 6. rotating damper, 7. rotating shaft, 8. torsion spring, 9. connecting rod, 10. driving roller, 11. driven roller, 12. driving motor, 13. slide, 14. rotating frame, 16. telescopic device, 17. bracket, 18. upper fixed frame, 19. lower fixed frame, 20. fixed shaft, 21. limit baffle, 22. push plate, 23. cloth cutting workbench, 24. flattening roller, 25. steam hole, 26. roller meter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-4As shown, the embodiment of the utility model provides a unwinding mechanism of a cloth cutting machine, including an unwinding frame 1, a support frame 2 is provided on one side of the unwinding frame 1, an air shaft 3 is rotatably connected to the support frame 2, a cloth 5 is wound on the air shaft 3 through a sleeve 4, a rotation damper 6 is connected to the air shaft 3, a rotating shaft 7 is passed through both ends of the unwinding frame 1, the rotating shaft 7 is rotatably connected to the unwinding frame 1 through a torsion spring 8, a connecting rod 9 is provided at one end of the rotating shaft 7 close to each other, a driving roller 10 and a driven roller 11 are rotatably connected between the connecting rods 9, and the side walls of the driving roller 10 and the driven roller 11 are circumferentially provided with teeth and tooth grooves that mesh with each other, and the driving roller 10 is connected to a driving motor 12. The driving motor 12 is a stepping motor or a servo motor, etc., and the driving motor 12, the air shaft 3 and the rotation damper 6 are all prior art. During use, the rolled-up cloth 5 is sleeved on the air shaft 3, so that the cloth 5 passes over the top of the driving roller 10 and penetrates the gap between the driving roller 10 and the driven roller 11. The driving motor 12 is used to rotate the driving roller 10, and the driving roller 10 is meshed and rotated with the driven roller 11 through the teeth and teeth provided on the side wall. The meshing of the teeth and teeth increases the contact area between the cloth 5 and the driving roller 10 and the driven roller 11, ensuring that the cloth 5 is driven accurately. When the air shaft 3 releases the cloth 5, the damper 6 can be rotated to provide a certain resistance to the air shaft 3 to ensure that the cloth 5 is driven accurately. 5 always has a certain tension, the rotating shaft 7 rotates with the unwinding frame 1 through the torsion spring 8, and the rotating shaft 7 drives the driving roller 10 and the driven roller 11 to rotate along the axis of the rotating shaft 7 through the connecting rod. When the cloth 5 at the air shaft 3 is stuck, the cloth 5 pulls the driving roller 10 to rotate toward the air shaft 3, and the driven roller 11 rotates away from the air shaft 3, and the contact area between the cloth 5 and the driving roller 10 is reduced, which makes it easier for the cloth 5 to separate from the driving roller 10 and the driven roller 11, thereby preventing the driving motor 12 from suddenly accelerating and causing the cloth 5 to be damaged, thereby increasing the safety and reliability of the equipment.

[0024] like Figure 2 , 3As shown in Figures 6 and 7, one end of the connecting rod 9 is provided with a slide groove 13, and both ends of the driven roller 11 slide along the slide groove 13 through a rotating frame 14. The rotating frame 14 is fixedly connected to the connecting rod 9 through a telescopic device 16, and the rotating frame 14 is rotatably connected to the end of the driven roller 11 through a bearing. The telescopic device 16 can be a hydraulic rod, an electric push rod, a spring, etc. The hydraulic rod and the electric push rod are existing technologies and can accurately control the gap between the driving roller 10 and the driven roller 11. When the telescopic device 16 is a spring, it is easy to maintain and reduce the equipment cost. In order to facilitate the insertion of the cloth 5 into the gap between the driving roller 10 and the driven roller 11, the two sides of the driven roller 11 are controlled by the telescopic device 16 to move away from the driving roller 10, so that the gap between the driving roller 10 and the driven roller 11 is increased, which is convenient for the placement of the cloth 5. After the cloth 5 is placed, the driven roller 11 is controlled to move so that the side walls of the driving roller 10 and the driven roller 11 are meshed. The guide function is provided for the driven roller 11 by the chute 13 and the rotating frame 14, ensuring the stability and accuracy of the driven roller 11 during the movement, thereby further improving the accuracy and reliability of the transmission of the cloth 5. Through the cooperation of the telescopic device 16, the chute 13 and the rotating frame 14, the driven roller 11 can be conveniently moved when maintenance or adjustment is required, greatly improving the maintainability and adjustability of the equipment, and can easily pass the cloth 5 through the roller to adapt to cloth 5 of different thicknesses and materials, that is, reducing the difficulty and time of operation, and increasing the scope of application of the equipment.

[0025] like Figure 1 , 5 As shown, the support frame 2 includes two brackets 17, and the brackets 17 are used for rotating the two ends of the air shaft 3. One of the brackets 17 includes an upper fixed frame 18 and a lower fixed frame 19. The top of the lower fixed frame 19 is provided with a fixed shaft 20, and the upper fixed frame 18 is provided with a rotating hole that cooperates with the fixed shaft 20. The rotation connection of the air shaft 3 on the bracket 17 is a prior art, which can be achieved through structures such as a bearing seat or a clamp. The upper fixed frame 18 can be rotated by the cooperation of the fixed shaft 20 and the rotating hole. When the sleeve 4 needs to be replaced, the air shaft 3 away from the side of the upper fixed frame 18 is disassembled, and then the upper fixed frame 18 is controlled to rotate along the fixed shaft 20. When the air shaft 3 rotates to a certain angle along the upper fixed frame 18, the sleeve 4 can be slid out of the air shaft 3, and the new sleeve 4 can be pushed into the air shaft 3 at the same time. Through the cooperation of the fixed shaft 20 and the rotating hole, the upper fixing frame 18 can be easily rotated, so that the operator can quickly replace the sleeve 4, reducing the downtime caused by replacing the sleeve 4, and only one end of the inflatable shaft 3 needs to be disassembled to achieve the replacement of the sleeve 4, reducing the time of the operation steps and the wear and tear of the equipment caused by frequent disassembly. And because the inflatable shaft 3 does not need to be completely disassembled, the operator can replace the sleeve 4 more safely, reducing the risk of accidental injury that may occur during the disassembly and installation process.

[0026] like Figure 2 , 5 As shown, a limit baffle 21 is fixed at one end of the inflatable shaft 3 close to the upper fixed frame 18, and a push plate 22 is provided between the limit baffle 21 and the end of the sleeve 4, and a handle is provided on the push plate 22, and scales are provided at both ends of the inflatable shaft 3. When the sleeve 4 needs to be removed, by pushing the handle on the push plate 22, it is convenient for the staff to apply thrust to the sleeve 4, thereby realizing the rapid removal of the roll, and improving the user experience of the operator and reducing operating fatigue. The limit baffle 21 can limit the extreme position of the sleeve 4 on the inflatable shaft 3, ensuring that the sleeve 4 is stably fixed on the inflatable shaft 3, and the scales at both ends of the inflatable shaft 3 can intuitively display the position of the sleeve 4, so that the staff can quickly judge whether the sleeve 4 is offset, and adjust the position of the sleeve 4, so that the sleeve 4 can always be subjected to uniform tension, and by judging and adjusting the position of the sleeve 4 in time, it can meet the production needs of fabrics 5 of different sizes.

[0027] like Figure 1 , 3 As shown in FIG. 4 , the unwinding frame 1 is provided with a cloth cutting workbench 23, and a flattening roller 24 is rotated above the cloth cutting workbench 23, and a gap for the cloth 5 to pass through is provided between the side wall of the flattening roller 24 and the cloth cutting workbench 23. The flattening roller 24 abuts against the top surface of the cloth cutting workbench 23 to flatten the cloth 5 passing through the driving roller 10 and the driven roller 11, and can effectively remove the wrinkles and unevenness of the cloth 5, making the surface of the cloth 5 smoother, improving the appearance quality of the cloth 5, and reducing the cutting errors of the cloth 5 caused by wrinkles, thereby reducing the waste of the cloth 5. The use of the flattening roller 24 ensures the tension consistency of the cloth 5 in the width direction, avoids the situation that the cloth 5 is loose or over-stretched during the processing, ensures the dimensional stability of the product, and can also reduce the sliding of the cloth 5 during the unwinding process, and improves the stability of the transmission of the cloth 5.

[0028] like Figure 1 , 3 As shown in FIG. 4 , the flattening roller 24 is evenly distributed with steam holes 25 in the circumference, and a steam heating device connected to the steam holes 25 is provided inside the flattening roller 24. The steam heating device is a prior art. Steam heating can soften the fibers of the cloth 5, reduce wrinkles and folds of the cloth 5, and make the cloth 5 smoother. The steam heating device can also provide uniform heat, ensuring that the cloth 5 is evenly heated during the heating process, avoiding the problem of local overheating or non-heating, so as to meet the processing requirements of different products.

[0029] like Figure 1 , 4As shown, a roller meter counter 26 is provided between the driving roller 10 and the inflatable shaft 3. The roller meter counter 26 is a prior art. The roller meter counter 26 can accurately measure the length of the cloth 5 in real time, ensure the length control of the cloth 5 during the unwinding process, and avoid material waste or shortage caused by inaccurate measurement. Compared with the traditional measurement method, the roller meter counter 26 provides higher measurement accuracy, reduces human or mechanical errors, and improves product quality and production efficiency.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cloth cutting machine unwinding mechanism, comprising an unwinding frame (1), characterized in that: A support frame (2) is provided on one side of the unwinding frame (1), an air shaft (3) is rotatably connected to the support frame (2), a cloth (5) is wound on the air shaft (3) through a sleeve (4), and a rotation damper (6) is connected to the air shaft (3). Rotating shafts (7) are passed through both ends of the unwinding frame (1), and the rotating shaft (7) is rotatably connected to the unwinding frame (1) through a torsion spring (8). Connecting rods (9) are provided at the ends of the rotating shafts (7) that are close to each other, and mutually parallel driving rollers (10) and driven rollers (11) are rotatably connected between the connecting rods (9). The side walls of the driving roller (10) and the driven roller (11) are circumferentially provided with teeth and tooth grooves that mesh with each other, and the driving roller (10) is connected to a driving motor (12).

2. The unwinding mechanism of a cloth cutting machine according to claim 1, characterized in that: One end of the connecting rod (9) is provided with a slide groove (13), and both ends of the driven roller (11) slide along the slide groove (13) through a rotating frame (14). The rotating frame (14) is fixedly connected to the connecting rod (9) through a telescopic device (16), and the rotating frame (14) is rotatably connected to the end of the driven roller (11) through a bearing.

3. The unwinding mechanism of a cloth cutting machine according to claim 1, characterized in that: The support frame (2) comprises two brackets (17), one of the brackets (17) comprises an upper fixing frame (18) and a lower fixing frame (19), a fixing shaft (20) is provided at the top end of the lower fixing frame (19), and the upper fixing frame (18) is provided with a rotating hole matched with the fixing shaft (20).

4. The unwinding mechanism of a cloth cutting machine according to claim 1, characterized in that: A limit baffle (21) is fixed to one end of the inflatable shaft (3) close to the upper fixing frame (18), a push plate (22) is provided between the limit baffle (21) and the end of the sleeve (4), a handle is provided on the push plate (22), and scales are provided at both ends of the inflatable shaft (3).

5. The unwinding mechanism of a cloth cutting machine according to claim 1, characterized in that: The unwinding frame (1) is provided with a cloth cutting workbench (23), a flattening roller (24) is rotatably arranged above the cloth cutting workbench (23), and a gap is provided between the side wall of the flattening roller (24) and the cloth cutting workbench (23) for the cloth (5) to pass through.

6. The unwinding mechanism of a cloth cutting machine according to claim 5, characterized in that: The flattening roller (24) is evenly distributed with steam holes (25) in the circumferential direction, and a steam heating device connected with the steam holes (25) is arranged inside the flattening roller (24).

7. The unwinding mechanism of a cloth cutting machine according to claim 1, characterized in that: A roller meter (26) is provided between the driving roller (10) and the inflatable shaft (3).

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