A hot slitting and winding machine

Abstract

The utility model discloses a kind of hot slitting strip rewinding machines, including rack, multiple material guiding sticks are rotatably connected on rack, opening tube, abutting roller and a pair of air expansion shafts arranged above and below, the side of rack away from air expansion shaft is equipped with unwinding frame, the above of abutting roller is equipped with heating roller, heating roller is connected with multiple cutting knives, the both ends of heating roller are rotatably connected on corresponding sliding block, sliding block is slidably connected on rack, the sliding block is connected with the air cylinder of driving it to lift, air cylinder is fixed with rack. It can heat-seal processing to cutting edge while slitting cloth, effectively prevent fiber from scattering.

Description

Technical Field

[0001] This utility model relates to the field of textile processing technology, and in particular to a hot-cutting, slitting and rewinding machine. Background Technology

[0002] In textile production, wide-width fiber rolls are widely used due to their ease of transportation and storage. However, in practical applications, it is often necessary to cut wide fabrics into multiple narrow strips according to different usage requirements. Traditional slitting equipment mainly uses mechanical cutting methods, physically cutting the fabric with sharp blades. While this slitting method can achieve the basic function of width slitting, it has revealed a series of technical problems in actual use.

[0003] Firstly, after mechanical cutting, the fibers at the cut edges of fabric are prone to unraveling due to the loss of their original fabric binding, resulting in what is known as "fraying" or "rough edges." This frayed edge phenomenon not only affects the appearance quality of the product, lowering its grade and value, but also may cause further problems during subsequent processing and use. For example, in garment manufacturing, frayed fabric increases sewing difficulty and affects sewing quality; in the field of industrial textiles, frayed edges may lead to a decline in material performance and affect its service life.

[0004] Secondly, during the slitting process, traditional slitting equipment generates significant stress concentration at the cut edge due to the mechanical shearing action between the blade and the fabric. This leads to problems such as tensile deformation and fiber breakage at the cut edge. This phenomenon is particularly pronounced in synthetic fiber fabrics, as the melting properties of synthetic fibers make the cut edge more prone to burrs when subjected to mechanical stress.

[0005] To address these issues, the industry has attempted to add a separate edge-sealing process after slitting, such as using laser edge sealing or hot-melt edge sealing to treat the cut edges. However, these methods require additional equipment and processes, increasing equipment investment costs, reducing production efficiency, and potentially causing additional damage to the fabric due to multiple processing steps.

[0006] Therefore, developing a slitting device that can complete edge sealing while slitting and has online quality inspection capabilities has become a pressing technical challenge in the textile machinery industry. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a hot cutting and rewinding machine that can heat-seal the cut edges while cutting the fabric, effectively preventing the fibers from spreading.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A hot-cutting, slitting, and rewinding machine includes a frame. Multiple guide rollers, a splitting tube, a stop roller, and a pair of vertically arranged air shafts are rotatably connected to the frame. An unwinding frame is provided on the side of the frame away from the air shafts. A heating roller is provided above the stop roller. Multiple cutters are connected to the heating roller. Each end of the heating roller is rotatably connected to a corresponding slider. The slider is slidably connected to the frame. The slider is connected to a cylinder that drives it to rise and fall. The cylinder is fixed to the frame.

[0009] The wide roll of fabric to be slit is placed on an unwinding frame, which releases the fabric. The released fabric passes over multiple guide rollers, a spreading tube, and an abutment roller. The spreading tube is used to open the fabric to prevent wrinkles. A cutter abuts against the abutment roller, and the fabric passes between the cutter and the abutment roller. The cutter slits the fabric, dividing the wide roll into multiple narrow rolls. The narrow rolls are wound onto air-expanding shafts, with adjacent narrow rolls staggered and wound onto the upper and lower air-expanding shafts respectively. Heating rollers heat the cutter to a certain high temperature, allowing for edge sealing and locking of the cut edges to prevent fiber dispersion.

[0010] Furthermore, a light box is provided on the downstream side of the open-end tube, located below the fabric that passes around the open-end tube and directly facing the fabric. The fabric can be illuminated through the light box, allowing workers to observe whether there are any defects in the fabric.

[0011] Furthermore, a support roller is provided on each side of the abutment roller, with the upper sidewall of the support roller being higher than that of the abutment roller. The fabric passes over the support roller, the abutment roller, and the support roller on the downstream side in sequence. Since the support roller is higher than the abutment roller, the section of fabric tensioned between the two support rollers is higher than the abutment roller, and the cutter rests against the abutment roller, ensuring that the bottom of the cutter is lower than the height of the fabric section between the two support rollers, thus effectively ensuring that the fabric is cut by the cutter. The downstream support roller and the heating roller are equipped with a chain synchronous drive mechanism, and the air shaft is connected to a motor that drives its rotation.

[0012] Furthermore, each heating roller is connected to a brush at one end near the slider, and the brushes are fixed to the corresponding sliders by brackets. The two brushes are respectively connected to the positive and negative terminals of the power supply, and voltage is applied to both ends of the heating roller through the brushes, thereby making the heating roller conductive. The heating roller acts as a resistor, thereby generating heat. The heat from the heating roller is then transferred to the cutter, thereby giving the cutter a certain temperature, so that the cutter can perform high-temperature edge sealing at the cut edge while cutting the fabric.

[0013] Furthermore, an insulating sleeve is provided between the slider and the heating roller, and the insulating sleeve is inserted into and fixed on the heating roller.

[0014] By installing an insulating sleeve, the slider and the heating roller can be insulated, thus preventing the frame from becoming energized, improving the safety performance of the equipment and preventing electric shock.

[0015] Furthermore, the slider is provided with a stop ring, and the insulating sleeve is formed with a stop ring groove, with the stop ring inserted into the stop ring groove.

[0016] By mutually restricting the stop ring and the stop ring groove, the heating roller can be rotated while its axial and radial directions are restricted.

[0017] Furthermore, the cutter includes a circular blade and a first semicircular ring fixedly connected to the circular blade on the same axis. A second semicircular ring is provided on the opposite side of the first semicircular ring. The first and second semicircular rings cover the outer side of the heating roller and are connected to each other by screws.

[0018] Loosen the screws, and the circular blade can move axially on the heating roller to adjust the position of the cutter to cut strips of different widths of cloth. After adjustment, tighten the screws, and the position of the cutter will be fixed by the friction between the first semicircular arc, the second semicircular ring and the heating roller.

[0019] Furthermore, a damping pad is embedded on the inner side of the second semi-circular ring. By adding the damping pad, the static friction between the second semi-circular ring and the heating roller can be increased, thereby further improving the positional stability of the cutter on the heating roller.

[0020] The outstanding effect of this utility model is: Compared with existing technologies, heating the cutter enables integrated cutting and edge sealing, effectively preventing fabric fraying at the cut edges and improving product quality.

[0021] The cutter position can be flexibly adjusted to meet the slitting needs of different width specifications.

[0022] Online inspection can detect fabric defects in a timely manner, reducing quality losses.

[0023] Setting the support roller higher than the stop roller ensures stable slitting quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A view of A; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 for Figure 3 Sectional view of BB.

[0025] Reference numerals: 1. Frame; 21. Guide roller; 22. Spreading tube; 23. Abutment roller; 24. Air shaft; 25. Support roller; 3. Unwinding frame; 41. Heating roller; 42. Cutter; 421. Circular blade; 422. First semi-circular ring; 423. Second semi-circular ring; 424. Screw; 425. Damping pad; 43. Slider; 431. Stop ring; 44. Cylinder; 45. Brush; 46. Bracket; 47. Insulating sleeve; 471. Stop ring groove; 5. Light box; 9. Cloth. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0027] The following is for reference Figures 1 to 4 The present invention will be described as follows: like Figure 1 , Figure 2 As shown, the present invention discloses a hot-cutting, slitting, and rewinding machine, comprising a frame 1, on which a plurality of guide rollers 21, a spreading tube 22, a stop roller 23, and a pair of vertically arranged air shafts 24 are rotatably connected. A unwinding frame 3 is provided on the side of the frame 1 away from the air shafts 24 for placing the wide rolls of fabric to be slit.

[0028] like Figure 1 , Figure 3 As shown, a heating roller 41 is provided above the abutment roller 23, and multiple cutters 42 are connected to the heating roller 41. Each end of the heating roller 41 is rotatably connected to a corresponding slider 43, and the slider 43 is slidably connected to the frame 1. The slider 43 is connected to a cylinder 44 that drives it to rise and fall. The cylinder 44 is fixed to the frame 1, and the cylinder is connected to a high-pressure air source and controlled by a controller through a solenoid valve.

[0029] During operation, the wide fabric roll is placed on the unwinding frame 3, and the fabric passes sequentially over multiple guide rollers 21, the opening tube 22, and the abutment roller 23. The opening tube 22 is used to open the fabric and eliminate wrinkles. The cutter 42 abuts against the abutment roller 23, and the fabric passes between the cutter 42 and the abutment roller 23. The cutter 42 cuts the fabric, dividing the wide fabric into multiple narrow fabrics. The narrow fabrics are wound on the air expansion shaft 24, with adjacent narrow fabrics staggered and wound on the upper and lower air expansion shafts 24 respectively.

[0030] The heating roller 41 heats the cutter 42, making the cutter 42 have a high temperature. While cutting the fabric, the cut edges are sealed to effectively prevent the fibers from spreading at the cut edges.

[0031] like Figure 1As shown, a light box 5 is provided on the downstream side of the open-ended tube 22. The light box 5 is located below and directly facing the fabric. The light emitted by the light box 5 passes through the fabric, making it easy for workers to observe whether there are any defects in the fabric.

[0032] Each side of the abutment roller 23 has a support roller 25, with the upper sidewall of the support roller 25 higher than the upper sidewall of the abutment roller 23. The fabric passes over the support roller 25, the abutment roller 23, and the support roller 25 on the downstream side in sequence. The arrangement of the support roller 25 being higher than the abutment roller 23 ensures that the section of fabric tensioned between the two support rollers 25 is higher than the abutment roller 23, while the cutter 42 rests against the abutment roller 23, with the bottom of the cutter 42 lower than the height of the fabric section between the two support rollers 25, ensuring that the fabric is cut smoothly.

[0033] like Figure 3 As shown, each end of the heating roller 41 near the slider 43 is connected to a brush 45, which is fixed to the corresponding slider 43 by a bracket 46. The two brushes 45 are connected to the positive and negative terminals of the power supply, respectively, to apply voltage to the two ends of the heating roller 41, causing the heating roller 41 to conduct electricity and generate heat. The heat from the heating roller 41 is transferred to the cutter 42, giving the cutter 42 an appropriate temperature.

[0034] like Figure 3 As shown, an insulating sleeve 47 is provided between the slider 43 and the heating roller 41. The insulating sleeve 47 is inserted into and fixed on the heating roller 41. The insulating sleeve 47 insulates the slider 43 and the heating roller 41, ensuring that the frame 1 is not energized and improving equipment safety.

[0035] The slider 43 is provided with a stop ring 431, and the insulating sleeve 47 is formed with a stop ring groove 471. The stop ring 431 is inserted into the stop ring groove 471. This structure allows the heating roller 41 to rotate while restricting its axial and radial directions.

[0036] like Figure 4 As shown, the cutter 42 includes a circular blade 421 and a first semicircular ring 422 coaxially fixedly connected to the circular blade 421. A second semicircular ring 423 is provided on the opposite side of the first semicircular ring 422. The first and second semicircular rings 422 and 423 cover the outer side of the heating roller 41 and are connected by a screw 424. Loosening the screw 424 allows the circular blade 421 to move axially on the heating roller 41, adjusting the position of the cutter 42 to cut strips of fabric of different widths. After adjustment, tightening the screw 424 fixes the position of the cutter 42 through the friction between the first and second semicircular rings 422 and the heating roller 41.

[0037] The inner side of the second semicircular ring 423 is embedded with a damping pad 425, which increases the static friction between the second semicircular ring 423 and the heating roller 41, and further improves the positional stability of the cutter 42 on the heating roller 41.

[0038] The working process of this utility model is as follows: A wide roll of fabric is placed on the unwinding frame 3, and the fabric is led out and passes around the guide roller 21, the opening tube 22, the support roller 25, the abutment roller 23, and another support roller 25. The position of the cutter 42 on the heating roller 41 is adjusted to determine the cutting width. The equipment is started, the heating roller 41 is energized and heated, and the temperature of the cutter 42 rises. The cylinder 44 drives the slider 43 to descend, so that the cutter 42 presses against the abutment roller 23. As the fabric moves, the cutter 42 cuts the fabric and simultaneously seals the cut edges with high temperature. The cut narrow fabric is then wound onto the upper and lower air-expansion shafts 24. The light box 5 illuminates the fabric to facilitate the inspection of the fabric quality by the workers.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A hot-cutting, slitting, and rewinding machine, comprising a frame (1), on which a plurality of guide rollers (21), a spreading tube (22), a stop roller (23), and a pair of vertically arranged air shafts (24) are rotatably connected, characterized in that: A heating roller (41) is provided above the abutting roller (23). Multiple cutters (42) are connected to the heating roller (41). Both ends of the heating roller (41) are rotatably connected to the corresponding slider (43). The slider (43) is connected to a cylinder (44) that drives it to rise and fall.

2. The hot-cutting, slitting, and rewinding machine according to claim 1, characterized in that: A light box (5) is provided on the downstream side of the open-ended tube (22).

3. The hot-cutting, slitting, and rewinding machine according to claim 1, characterized in that: Each side of the abutting roller (23) is provided with a support roller (25), and the upper side wall of the support roller (25) is higher than the upper side wall of the abutting roller (23).

4. The hot-cutting, slitting, and rewinding machine according to claim 1, characterized in that: Each heating roller (41) is connected to a brush (45) at one end near the slider (43), and the brush (45) is fixed to the corresponding slider (43) by a bracket (46).

5. A hot-cutting, slitting, and rewinding machine according to claim 4, characterized in that: An insulating sleeve (47) is provided between the slider (43) and the heating roller (41), and the insulating sleeve (47) is inserted into and fixed on the heating roller (41).

6. A hot-cutting, slitting, and rewinding machine according to claim 5, characterized in that: The slider (43) is provided with a stop ring (431), and the insulating sleeve (47) is formed with a stop ring groove (471). The stop ring (431) is inserted into the stop ring groove (471).

7. A hot-cutting, slitting, and rewinding machine according to claim 1, characterized in that: The cutter (42) includes a circular blade (421) and a first semicircular ring (422) fixedly connected to the circular blade (421) on the same axis. A second semicircular ring (423) is provided on the opposite side of the first semicircular ring (422). The first semicircular ring (422) and the second semicircular ring (423) cover the outside of the heating roller (41) and are connected to each other by screws (424).

8. A hot-cutting, slitting, and rewinding machine according to claim 7, characterized in that: The inner side of the second semicircular ring (423) is fitted with a damping pad (425).

Images