Polyester elastic fabric stretching and setting device
Patent Information
- Application Number
- CN202522283480.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-29
AI Technical Summary
In the production process of polyester elastic fabrics, thin or highly elastic fabrics often face edge curling during the feeding and guiding stage, which leads to poor conveying and even production interruption. Furthermore, the curled edges cause uneven stress on the fabric, resulting in defects such as inconsistent width and surface wrinkles.
The anti-rolling edge pressing component, including arc-shaped pressing strips and flat pressing strips, forms a clamping structure with the feed guide roller. The pressing gap is adjusted by adjusting the threaded rod to ensure that the fabric edge is stably constrained and prevents curling. Together with the heating box and tension roller, it achieves stable fabric conveying and shaping.
It effectively prevents the fabric edges from getting stuck and tangled between the guide rollers, reduces production downtime, ensures the continuity of the stretching and setting process, improves the consistency of fabric quality, and reduces fabric surface defects.
Smart Images
Figure CN224930804U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabric processing technology, and in particular to a stretching and shaping device for polyester elastic fabric. Background Technology
[0002] With the continuous development of the textile industry, polyester elastic fabrics have occupied an important position in clothing, home textiles, and industrial fabrics due to their excellent performance. Polyester fiber itself has the characteristics of high strength, corrosion resistance, and non-deformation. When blended or interwoven with elastic fibers such as spandex, the resulting polyester elastic fabrics not only retain the advantages of polyester fiber, but also have good elasticity and stretchability, which can meet consumers' dual needs for clothing comfort and fashion.
[0003] In the production process of polyester elastic fabrics, stretching and setting is a key step. The main function of stretching and setting is to make the fabric reach the predetermined size specifications through mechanical stretching and heat setting, giving the fabric a smooth surface shape and stable elastic recovery performance. This step is crucial for ensuring the quality of the fabric and subsequent processing.
[0004] In the actual stretching and setting production process, polyester elastic fabrics, especially thin or highly elastic fabrics, often face the problem of edge curling during the feeding and guiding stage. The curled edges are easy to get stuck or entangled between the guide rollers, resulting in poor fabric conveying or even interruption of production. Even if the fabric can continue to be conveyed, the curled edges will cause uneven stress on the fabric during stretching, resulting in defects such as inconsistent fabric width and wrinkles on the surface. Utility Model Content
[0005] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a polyester elastic fabric stretching and shaping device that can solve the problem of edge curling often encountered in the feeding and guiding stage. The curled edge is easy to get stuck or entangled between the guide rollers, resulting in poor fabric conveying or even interruption of production. Even if the fabric can continue to be conveyed, the curled edge will cause uneven stress on the fabric during the stretching process, resulting in defects such as inconsistent fabric width and wrinkles on the surface.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a stretching and shaping device for polyester elastic fabric, comprising a heating box, a take-up roller, a motor, and a cylinder, wherein the heating box is equipped with an anti-rolling edge pressing component; The anti-rolling edge pressing assembly includes a fixed bracket, a feeding guide roller, and two support plates. The two support plates are fixedly installed on the upper surface of the heating box near the feeding port. Sliding block grooves are opened on the outer walls of the two support plates. The left and right outer walls of the fixed bracket are fixedly connected to the outer walls of the corresponding support plates away from the heating box by bolts. Sliding blocks are slidably connected inside the two sliding block grooves. The feed guide roller is rotatably connected to the outer wall of the corresponding sliding block at both ends via a rotating shaft. The upper surface of the fixed bracket is threaded with a first adjusting threaded rod, and the upper surfaces of the two support plates are threaded with a second adjusting threaded rod. The fixed bracket is equipped with a pressing condition inside. When the pressing condition is an arc-shaped pressing strip, two sliding rods are slidably connected to the upper surface of the fixed bracket.
[0007] Preferably, the fixing bracket is in the shape of an inverted "U"; Among them, the ends of the two second adjusting threaded rods near the sliding block are threaded into the interior of the sliding block groove and are rotatably connected to the upper surface of the corresponding sliding block.
[0008] Preferably, the end of the first adjusting threaded rod near the pressing condition extends into the interior of the fixed bracket and is rotatably connected to the upper surface of the pressing condition.
[0009] Preferably, the ends of both slide rods near the pressing condition slide into the interior of the fixed bracket and are fixedly connected to the upper surface of the pressing condition; Among them, the curved surface of the pressing condition is used in conjunction with the surface of the feed guide roller.
[0010] Preferably, the cylinder is fixedly installed on the upper surface of the heating box, and the receiving roller is rotatably installed on the outer wall of the support plate at the discharge port of the heating box; The electric motor is fixedly mounted on the outer wall of the support plate on the heating box, and a mounting bracket is installed inside the heating box.
[0011] Preferably, the mounting bracket is inverted "U" shape, and the output end of the cylinder slides into the interior of the heating box and is fixedly connected to the upper surface of the mounting bracket; The output end of the motor extends to the outside of the support plate and is fixedly connected to one end of the receiving roller.
[0012] Preferably, two conveyor rollers are rotatably installed inside the heating box, with the two conveyor rollers located at the inlet and outlet respectively; The mounting frame has a tension roller that rotates inside.
[0013] Preferably, the two sliding rods slidably connected to the upper surface of the heating box extend slidably into the interior of the heating box and are fixedly connected to the upper surface of the mounting frame at one end. The heating box is equipped with guide rollers that rotate at both the discharge port and the inlet.
[0014] Preferably, the pressing condition is a planar pressing strip; The lower surface arc-shaped outer wall of the flat edge strip is used in conjunction with the outer wall of the feed guide roller.
[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This polyester elastic fabric stretching and setting device forms a "clamping" structure with the edge pressing conditions (including arc-shaped and flat edge pressing strips) in the anti-rolling edge pressing assembly and the feeding guide roller. Through the linkage adjustment of the first and second adjusting threaded rods, the edge pressing gap can be precisely adjusted to ensure that the edges of fabrics of different thicknesses and widths can be stably constrained. During the fabric conveying process, the arc-shaped or flat surface of the edge pressing strip presses against the fabric edge, and with the support of the feeding guide roller, it effectively prevents the edge from curling inward or outward, avoiding the situation where the curled edge gets stuck or tangled between the guide rollers. This significantly reduces the downtime caused by edge curling in the production line and ensures the continuity of the stretching and setting process. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the heating box of this utility model; Figure 3 This is a schematic diagram of the external structure of the mounting bracket of this utility model; Figure 4 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle; Figure 5 This is a schematic diagram of the external structure of the planar edge strip of this utility model.
[0017] Reference numerals in the attached drawings: 1. Heating box; 2. Receiving roller; 3. Motor; 4. Cylinder; 5. Fixed bracket; 6. Edge pressing condition; 7. Feed guide roller; 8. First adjusting threaded rod; 9. Second adjusting threaded rod; 10. Sliding block; 11. Sliding rod; 12. Support plate; 13. Sliding block groove; 14. Conveying roller; 15. Mounting frame; 16. Tensioning roller; 17. Flat edge pressing strip. Detailed Implementation
[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0022] Example 1: Reference Figure 1-4 Example of anti-rolling design for conventional polyester fabric (arc-shaped edge pressing strip + ordinary feed guide roller) This embodiment is applicable to the shaping and processing of polyester elastic fabrics with ordinary thickness (0.2-0.5mm). By combining the arc-shaped edge pressing strip with the ordinary feed guide roller, a stable anti-rolling effect is achieved to meet the needs of daily production. Structural fit and anti-rolling principle: The pressing condition 6 adopts an arc-shaped pressing strip (material is aluminum alloy 6061, surface anodized treatment), the curvature matches the outer surface of the feeding guide roller 7 (curvature radius difference ≤0.5mm), the feeding guide roller 7 is made of carbon steel, surface chrome-plated treatment (roughness Ra≤0.8μm), and is adjusted up and down in the sliding block groove 13 by the sliding block 10 (adjustment range 0-30mm), and achieves precise positioning in conjunction with the second adjusting threaded rod 9. The first adjusting threaded rod 8 is used to fine adjust the downward pressure of the arc-shaped pressing strip (pressure range 5-15N). During feeding, the fabric is guided in by the feeding guide roller, and the arc-shaped edge pressing strip adheres to the edge of the fabric with a pressure of 10N. The curved surface contact disperses the pressure and prevents the fabric edge from curling due to tension. When the fabric thickness changes, the height of the feeding guide roller can be adjusted by adjusting the second adjusting screw rod to ensure that the edge pressing strip is in close contact with the fabric, and the success rate of preventing edge curling is ≥95%. Application effect: It is suitable for the shaping and production of conventional polyester elastic fabrics such as clothing fabrics and home textile fabrics. The equipment operates stably, daily maintenance is simple, and the fabric curling repair rate is reduced by 80%. Example 2: Reference Figure 5Example of anti-wrinkle and anti-rolling edge design for ultra-thin polyester fabric (flat edge pressing strip + silicone-coated feed guide roller) This embodiment targets ultra-thin polyester elastic fabrics with a thickness of ≤0.1mm. By using a flat edge pressing strip and a silicone-coated feed guide roller, damage to the fabric is reduced, while the anti-curling effect is enhanced. Structural optimization and damage prevention design: The edge pressing condition 6 is replaced with a flat edge pressing strip 17 (made of polytetrafluoroethylene, hardness 50 Shore D), with a smooth surface and low coefficient of friction (μ≤0.05) to avoid scratching the fabric. The feed guide roller 7 is covered with 3mm thick food-grade silicone (hardness 40 Shore A) to increase the friction with the fabric (the coefficient of friction is increased to 0.8) to prevent the fabric from slipping. The first adjusting thread rod 8 adopts a precision trapezoidal thread (pitch 0.5mm) to achieve 0.1N level pressure fine adjustment. When feeding ultra-thin fabric, the flat edge pressing strip adheres to the fabric with a light pressure of 5N, and the silicone feeding guide roller provides stable support to reduce fabric wrinkles. The low-friction edge pressing strip and the high-friction guide roller work together to ensure that the fabric is transported smoothly under low tension, with a success rate of 98% in preventing edge curling, and the fabric surface is free of indentations or scratches. Ultra-thin fabric application: Effectively solves the problems of preventing curling and damage in ultra-thin polyester fabrics, suitable for high-requirement production scenarios such as underwear fabrics and sportswear fabrics.
[0023] Furthermore, when using this device, if the curved edge pressing strip (edge pressing condition 6) is used, the first adjusting threaded rod 8 is manually rotated to move it up and down along the threaded hole of the fixed bracket 5, causing the edge pressing condition 6 to move up and down synchronously (the sliding rod 11 slides with the edge pressing condition 6 to ensure stable guidance), until the curved surface of the lower surface of the edge pressing condition 6 forms a gap with the surface of the feed guide roller 7 that is suitable for the fabric thickness (the fabric can pass through smoothly and the edge can be pressed). Then, if the flat edge pressing strip 17 is used, the adjustment method is the same as that of the curved edge pressing strip. The gap between the flat edge pressing strip 17 and the feed guide roller 7 is adjusted by the first adjusting threaded rod 8. Then, the two second adjusting threaded rods 9 are manually rotated to push the sliding block 10 to slide up and down along the sliding block groove 13, thereby driving the feed guide roller 7 to move up and down. Roller 7 moves up and down to assist in calibrating the alignment of the feed guide roller 7 and the pressing condition 6, while ensuring that the feed guide roller 7 and the conveyor roller 14 inside the heating box 1 are height-matched and that the fabric is conveyed without jamming. Then, cylinder 4 is activated to control the extension and retraction of its piston rod, which drives the mounting frame 15 and tension roller 16 to move up and down. The pressure of the tension roller 16 on the fabric on the conveyor roller 14 is preset (adjusted according to the elastic characteristics of the fabric to avoid excessive pressure causing overstretching or insufficient pressure causing loosening). In this way, one end of the polyester elastic fabric to be processed passes sequentially through the gap between the feed guide roller 7 at the feed inlet of the heating box 1 and the pressing condition 6 (arc-shaped pressing strip or flat pressing strip 17), and then through the gap above the conveyor roller 14 at the feed inlet inside the heating box 1, and is then tensioned. Below roller 16 and above conveyor roller 14 at the outlet, the fabric is finally fixed to take-up roller 2. Then, when the fabric passes between feed guide roller 7 and pressing condition 6: the arc-shaped surface of pressing condition 6 (or the arc-shaped outer wall of flat pressing strip 17) presses the edge of the fabric from above, and feed guide roller 7 supports the fabric from below, forming a "clamped" state. The fabric moves forward under the rotation of feed guide roller 7, and the edge is constrained by pressing condition 6, preventing it from curling up or down, thus achieving an anti-curling effect during the feeding stage. Then, the cooperation between sliding block 10 and sliding block groove 13 ensures that feed guide roller 7 remains stable during fabric conveying, avoiding deviation of feed guide roller 7 due to fabric tension fluctuations, and further ensuring the matching accuracy between pressing condition 6 and feed guide roller 7. Then, heating chamber 1 is started, and the internal temperature of heating chamber 1 rises to the setting temperature suitable for polyester elastic fabric, forming a closed heating environment. At the same time, cylinder 4 keeps the piston rod extended, so that tension roller 16 presses on the fabric. In cooperation with conveyor roller 14, it applies stable tension to the fabric. Under the action of tension, the fabric remains flat, avoiding wrinkles caused by fabric relaxation during heating. Under the traction of take-up roller 2, the fabric passes through the heating area inside heating chamber 1 at a uniform speed. The polyester fibers and elastic fibers in the fabric are fixed in shape under the action of high temperature. The edge shape pressed by the anti-rolling component and the flat shape under the action of tension are "memorized", completing the stretching and setting (the pressure of tension roller 16 can be finely adjusted in real time by cylinder 4 to ensure that the fabric is flat throughout the process).Then, start motor 3: Motor 3 outputs torque to drive take-up roller 2 to rotate at a uniform speed. Take-up roller 2 generates continuous traction force on the heated and shaped fabric, pulling the fabric out from the conveyor roller 14 and guide roller at the outlet of heating box 1. In this way, the rotation speed of take-up roller 2 matches the conveying speed of the fabric in heating box 1, avoiding overstretching of the fabric due to excessive traction speed or fabric accumulation due to excessive speed. The shaped fabric is evenly wound into a roll on take-up roller 2, completing the entire stretching and shaping process. Then, if processing fabrics of different thicknesses: the height of the pressing condition 6 can be adjusted by rotating the first adjusting threaded rod 8, the height of the feed guide roller 7 can be adjusted by rotating the second adjusting threaded rod 9, and the pressure of the tension roller 16 can be adjusted by the cylinder 4 to achieve rapid adaptation.
[0024] The edge-pressing condition 6 (including the arc-shaped edge-pressing strip and the flat edge-pressing strip 17) in the anti-rolling edge-pressing assembly forms a "clamping" structure with the feeding guide roller 7. Through the linkage adjustment of the first adjusting threaded rod 8 and the second adjusting threaded rod 9, the edge-pressing gap can be precisely adjusted to ensure that the edges of fabrics of different thicknesses and widths can be stably constrained. During the fabric conveying process, the arc-shaped or flat surface of the edge-pressing strip presses against the fabric edge. With the support of the feeding guide roller 7, it effectively prevents the edge from curling inward or outward, avoiding the situation where the curled edge gets stuck or tangled between the guide rollers. This significantly reduces the downtime of the production line caused by edge curling and ensures the continuity of the stretching and setting process.
[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A stretching and shaping device for polyester elastic fabric, comprising a heating box (1), a take-up roller (2), a motor (3), and a cylinder (4), characterized in that: The heating box (1) is equipped with an anti-rolling edge pressing component; The anti-rolling edge pressing assembly includes a fixed bracket (5), a feeding guide roller (7) and two support plates (12). The two support plates (12) are fixedly installed on the upper surface of the heating box (1) near the feed port. The outer walls of the two support plates (12) are provided with sliding block grooves (13). The left and right outer walls of the fixed bracket (5) are fixedly connected to the outer wall of the corresponding support plate (12) away from the heating box (1) by bolts. The sliding blocks (10) are slidably connected inside the two sliding block grooves (13). Among them, the two ends of the feed guide roller (7) are rotatably connected to the outer wall of the corresponding sliding block (10) through the rotating shaft. The upper surface of the fixed bracket (5) is threaded with the first adjusting thread rod (8), and the upper surfaces of the two support plates (12) are threaded with the second adjusting thread rod (9). The fixed bracket (5) is provided with the pressing condition (6). When the pressing condition (6) is an arc-shaped pressing strip, the upper surface of the fixed bracket (5) is slidably connected with two sliding rods (11).
2. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: The fixed bracket (5) is in the shape of an inverted "U"; Among them, the two second adjusting threaded rods (9) are threaded to the inside of the sliding block groove (13) at the end near the sliding block (10) and are rotatably connected to the upper surface of the corresponding sliding block (10).
3. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: The first adjusting threaded rod (8) extends threadedly into the interior of the fixed bracket (5) at one end near the pressing condition (6) and is rotatably connected to the upper surface of the pressing condition (6).
4. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: Both of the sliding rods (11) extend into the interior of the fixed bracket (5) at the end near the pressing condition (6) and are fixedly connected to the upper surface of the pressing condition (6); Among them, the curved surface of the pressing condition (6) is used in conjunction with the surface of the feed guide roller (7).
5. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: The cylinder (4) is fixedly installed on the upper surface of the heating box (1), and the receiving roller (2) is rotatably installed on the outer wall of the support plate at the outlet of the heating box (1); Among them, the motor (3) is fixedly installed on the outer wall of the support plate on the heating box (1), and the heating box (1) is equipped with a mounting bracket (15).
6. The polyester elastic fabric stretching and shaping device according to claim 5, characterized in that: The mounting bracket (15) is inverted "U" shape, and the output end of the cylinder (4) slides into the interior of the heating box (1) and is fixedly connected to the upper surface of the mounting bracket (15); The output end of the motor (3) extends to the outside of the support plate and is fixedly connected to one end of the receiving roller (2).
7. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: The heating box (1) has two conveying rollers (14) rotatably installed inside, with the two conveying rollers (14) located at the inlet and outlet respectively; The mounting frame (15) has a tension roller (16) rotatably connected inside.
8. The polyester elastic fabric stretching and shaping device according to claim 1, characterized in that: The two sliding rods slidably connected to the upper surface of the heating box (1) extend into the interior of the heating box (1) near the mounting frame (15) and are fixedly connected to the upper surface of the mounting frame (15); Among them, guide rollers are rotatably installed at both the discharge port and the inlet of the heating box (1).