Constant-tension winding system of pre-shrinking machine

Abstract

The utility model discloses a constant tension winding system of a pre-shrinking machine, which comprises a tension bracket, a first tension control component and a second tension control component are sequentially arranged on the tension bracket, a cloth winding frame is arranged on one side of the tension bracket, and a cloth winding roller and a cloth winding motor for driving the cloth winding roller to rotate are arranged on the cloth winding frame; the first tension control assembly and the second tension control assembly each comprise a transmission motor and a tension detection roller, the transmission motor is connected with a transmission roller through a frequency converter, and the tension detection roller of the first tension control assembly is electrically connected with the transmission motor of the second tension control assembly through a controller. A tension detection roller of the second tension control assembly is electrically connected with the cloth rolling motor through the controller. The device has the advantages that constant tension for conveying and winding is guaranteed, and fabric preshrinking and winding quality is improved.

Description

Technical Field

[0001] This utility model relates to a constant tension winding system, and more particularly to a constant tension winding system for a pre-shrinking machine. Background Technology

[0002] A pre-shrinking machine is a finishing device used in modern garment production to mechanically pre-shrink fabrics. Under certain temperature, humidity, and pressure conditions, it eliminates the potential shrinkage of garment fabrics by utilizing the fabric's own elastic shrinkage deformation and the principles of fabric and fiber penetration and swelling. Maintaining stable tension in the fabric during and after the pre-shrinking process is crucial for ensuring the consistency of the pre-shrinking effect and the quality of the fabric.

[0003] During fabric pre-shrinking, the fabric undergoes multiple steps, including humidification, heating, and compression. If the tension is unstable, the fabric's deformation during these steps will be inconsistent, affecting the uniformity of the pre-shrinking effect. Excessive tension may cause overstretching and deformation; conversely, insufficient tension may prevent adequate pre-shrinking, affecting final dimensional stability. During fabric winding, the roll diameter gradually increases non-linearly. If wound at the same speed, the tension will inevitably increase with the roll diameter. This gradual increase in tension will lead to overly tight winding, resulting in uneven edges and even narrowing of the fabric width.

[0004] Therefore, it is essential to maintain constant tension in the fabric during pre-shrinking and winding processes to ensure fabric quality. Existing tension control methods rely solely on a winding motor on the winding roller for active winding, which is inadequate for controlling fabric tension during the initial transport phase. This results in poor stability as the fabric relies solely on the winding motor for constant tension control later on, negatively impacting the pre-shrinking effect. Utility Model Content

[0005] The purpose of this invention is to provide a constant tension winding system for a pre-shrinking machine. This invention ensures constant tension during conveying and winding, thereby improving the quality of fabric pre-shrinking and winding.

[0006] The technical solution of this utility model: a constant tension winding system for a pre-shrinking machine, including a tension frame, on which a first tension control component and a second tension control component are sequentially arranged. A fabric winding frame is provided on one side of the tension frame, and a fabric winding roller and a fabric winding motor for driving the fabric winding roller to rotate are provided on the fabric winding frame. The first tension control component and the second tension control component each include a drive motor and a tension detection roller. The drive motor is connected to the drive roller via a frequency converter. The tension detection roller of the first tension control component is electrically connected to the drive motor of the second tension control component via a controller. The tension detection roller of the second tension control component is electrically connected to the fabric winding motor via a controller.

[0007] In the aforementioned constant tension winding system of the pre-shrinking machine, the fabric winding roller includes a roller shaft, with rotating gears driven by a fabric winding motor at both ends of the roller shaft. A roller cylinder is sleeved on the roller shaft, and positioning sleeves are provided on both sides of the roller cylinder. A guide groove is provided on the surface of the roller cylinder along its length direction. The positioning sleeves are installed on the roller cylinder by connecting to the guide grooves through positioning bolts. A compression spring is provided on one side of each of the two positioning sleeves, and a limiting sleeve is provided on the compression spring and sleeved on the roller cylinder.

[0008] In the aforementioned constant tension winding system of the pre-shrinking machine, the positioning sleeve is also equipped with a detector, and the probe of the detector is inserted into the gap of the compression spring.

[0009] In the aforementioned constant tension winding system of the pre-shrinking machine, the tension detection roller includes a guide roller, with support seats at both ends of the guide roller. The support seats are provided with U-shaped grooves for placing the guide roller, and a pressure sensor is provided at the bottom of the U-shaped groove. The sensing head of the pressure sensor contacts and senses the bottom of the guide roller.

[0010] In the aforementioned constant tension winding system of the pre-shrinking machine, a pressure arm assembly is rotatably connected to the tension frame.

[0011] In the aforementioned constant tension winding system of the pre-shrinking machine, the pressure arm assembly includes an arm body rotatably connected to a tension frame at one end, a drive cylinder for driving the arm body to rotate on the tension frame, and a pressure roller at the free end of the arm body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a first tension control component where a drive motor drives a drive roller to transport fabric. The tension detection roller of the first tension control component continuously monitors the fabric tension as it passes through. Based on the detected tension, a controller adjusts the speed of the drive motor in the second tension control component to adjust the fabric transport speed and tension, ensuring constant overall fabric tension and preventing excessive looseness or tightness, thus improving fabric shrinkage quality. Similarly, the second tension control component uses a second tension detection roller to continuously monitor the fabric tension as it passes through. Based on the detected tension, a controller adjusts the speed of the fabric winding motor to adjust the fabric winding speed and tension, ensuring constant tension and stable linear speed during fabric winding, thus improving fabric pre-shrinking and winding quality.

[0014] Therefore, this invention features constant tension during conveying and winding, and improves the quality of fabric pre-shrinking and winding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the tension detection roller.

[0017] Figure 3 This is a schematic diagram of the fabric rolling roller.

[0018] Figure 4 This is a schematic diagram of the detector's structure.

[0019] The labels in the attached diagram are as follows: 1. Tension frame; 2. First tension control component; 3. Second tension control component; 31. Drive motor; 311. Drive roller; 32. Tension detection roller; 33. Guide roller; 34. Support base; 35. U-shaped groove; 36. Pressure sensor; 4. Fabric roll frame; 41. Fabric roll roller; 411. Roller shaft; 412. Rotating gear; 413. Roller; 414. Positioning sleeve; 415. Guide groove; 416. Compression spring; 417. Limiting sleeve; 418. Detector; 42. Fabric roll motor; 5. Pressure arm assembly; 51. Arm body; 52. Drive cylinder; 53. Pressure roller. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example:

[0023] like Figures 1-4 As shown, the constant tension winding system of the pre-shrinking machine includes a tension frame 1, on which a first tension control component 2 and a second tension control component 3 are sequentially arranged. A fabric winding frame 4 is provided on one side of the tension frame 1, and a fabric winding roller 41 and a fabric winding motor 42 for driving the fabric winding roller 41 to rotate are provided on the fabric winding frame 4. The first tension control component 2 and the second tension control component 3 both include a drive motor 31 and a tension detection roller 32. The drive motor 31 is connected to the drive roller 311 via a frequency converter. The tension detection roller 32 of the first tension control component 2 is electrically connected to the drive motor 31 of the second tension control component 3 via a controller. The tension detection roller 32 of the second tension control component 3 is electrically connected to the fabric winding motor 42 via a controller.

[0024] This invention utilizes the transmission motor 31 of the first tension control component 2 to drive the transmission roller 311 to rotate and transport the fabric. The tension detection roller 32 of the first tension control component 2 detects the tension of the fabric passing through this point in real time. Based on the detected tension, the controller promptly controls the rotation speed of the transmission motor 31 in the second tension control component 3, thereby adjusting the fabric transport speed and tension to ensure a constant overall tension during fabric transport, avoiding excessive looseness or tightness and improving fabric shrinkage quality. Similarly, the tension detection roller 32 of the second tension control component 3 detects the tension of the fabric passing through this point in real time. Based on the detected tension, the controller promptly controls the rotation speed of the fabric winding motor 42, thereby adjusting the fabric winding speed and tension, ensuring constant tension and stable linear speed during fabric winding, and improving fabric pre-shrinking and winding quality.

[0025] The fabric winding roller 41 includes a roller shaft 411, with rotating gears 412 driven by a fabric winding motor 42 at both ends of the roller shaft 411. A roller 413 is sleeved on the roller shaft 411, and positioning sleeves 414 are provided on both sides of the roller 413. A guide groove 415 is provided on the surface of the roller 413 along its length. The positioning sleeves 414 are installed on the roller 413 by connecting them to the guide grooves 415 with positioning bolts. A compression spring 416 is provided on one side of each of the two positioning sleeves 414, and a limiting sleeve 417 is provided on the compression spring 416 and sleeved on the roller 413. The fabric winding roller 41 is driven by the fabric winding motor 42 through the rotating gears 412, thereby realizing the active winding of the fabric. As the diameter of the wound fabric increases, the rotation speed of the fabric winding motor 42 is adjusted in conjunction with the detected tension, thereby adjusting the linear speed of the fabric winding to maintain a consistent speed, achieving stable fabric winding and excellent fabric quality. A positioning sleeve 414 that can move along the guide groove 415 is provided on the roller 413, thereby adjusting the actual winding width of the fabric roller 41 to adapt to different sizes of fabric rolls; a limiting sleeve 417 is connected to the positioning sleeve 414 through a compression spring 416, and the limiting and pressing action of the limiting sleeve 417 is used to ensure that the two sides of the fabric are flat when the fabric roller 41 winds the fabric, making the fabric roll more neat and avoiding deviation during the winding process.

[0026] The positioning sleeve 414 is also equipped with a detector 418, and the probe of the detector 418 is inserted into the gap of the compression spring 416. If the detector 418 detects that the degree of deformation of the compression spring 416 changes abruptly with the increase of the roll diameter, it indicates that the fabric width is narrowing or widening, and an alarm can be triggered in time.

[0027] The tension detection roller 32 includes a guide roller 33, with support seats 34 at both ends. Each support seat 34 has a U-shaped groove 35 for placing the guide roller 33. A pressure sensor 36 is located at the bottom of the U-shaped groove 35, and the sensing head of the pressure sensor 36 contacts the bottom of the guide roller 33. By using the support seats 34 in conjunction with the pressure sensor 36 to sense the pressure of the fabric as it passes over the first and second tension detection rollers 32, the pressure is converted into fabric tension, making the detection convenient, stable, and accurate.

[0028] A pressure arm assembly 5 is rotatably connected to the tension frame 1. The pressure arm assembly 5 presses against the fabric surface of the fabric roll roller 41, smoothing the fabric.

[0029] The pressure arm assembly 5 includes an arm body 51 rotatably connected to a tension frame 1 at one end. The tension frame 1 is equipped with a drive cylinder 52 for driving the arm body 51 to rotate. A pressure roller 53 is provided at the free end of the arm body 51. The drive cylinder 52 drives the pressure roller 53 on the arm body 51 to press against the fabric surface of the fabric roll roller 41, so that the fabric is tightly rolled onto the fabric roll roller 41. When it is necessary to remove the fabric roll roller 41, the drive cylinder 52 lifts the pressure roller 53 upward to separate it from the fabric surface, thereby facilitating the unloading operation of the fabric roll roller 41.

[0030] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.

Claims

1. A constant tension winding system for a pre-shrinking machine, characterized in that: The tension control assembly includes a tension frame (1), on which a first tension control component (2) and a second tension control component (3) are sequentially arranged. A fabric roll frame (4) is provided on one side of the tension frame (1). A fabric roll roller (41) and a fabric roll motor (42) for driving the fabric roll roller (41) to rotate are provided on the fabric roll frame (41). The first tension control component (2) and the second tension control component (3) both include a drive motor (31) and a tension detection roller (32). The drive motor (31) is connected to the drive roller (311) via a frequency converter. The tension detection roller (32) of the first tension control component (2) is electrically connected to the drive motor (31) of the second tension control component (3) via a controller. The tension detection roller (32) of the second tension control component (3) is electrically connected to the fabric roll motor (42) via a controller.

2. The constant tension winding system of the pre-shrinking machine according to claim 1, characterized in that: The fabric rolling roller (41) includes a roller shaft (411), with rotating gears (412) driven by a fabric rolling motor (42) at both ends of the roller shaft (411). A roller (413) is sleeved on the roller shaft (411), and positioning sleeves (414) are provided on both sides of the roller (413). A guide groove (415) is provided on the surface of the roller (413) along the length direction. The positioning sleeves (414) are installed on the roller (413) by connecting the positioning bolts to the guide grooves (415). A compression spring (416) is provided on the opposite side of the two positioning sleeves (414), and a limiting sleeve (417) is provided on the compression spring (416) and sleeved on the roller (413).

3. The constant tension winding system of the pre-shrinking machine according to claim 2, characterized in that: The positioning sleeve (414) is also provided with a detector (418), and the probe of the detector (418) is inserted into the gap of the compression spring (416).

4. The constant tension winding system of the pre-shrinking machine according to claim 1, characterized in that: The tension detection roller (32) includes a guide roller (33), with support seats (34) at both ends of the guide roller (33). The support seats (34) are provided with U-shaped grooves (35) for placing the guide roller (33). A pressure sensor (36) is provided at the bottom of the U-shaped groove (35), and the sensing head of the pressure sensor (36) contacts and senses the bottom of the guide roller (33).

5. The constant tension winding system of the pre-shrinking machine according to claim 1, characterized in that: The tension frame (1) is rotatably connected to a pressure arm assembly (5).

6. The constant tension winding system of the pre-shrinking machine according to claim 5, characterized in that: The pressure arm assembly (5) includes an arm body (51) rotatably connected to a tension frame (1) at one end. The tension frame (1) is provided with a drive cylinder (52) for driving the arm body (51) to rotate. The free end of the arm body (51) is provided with a pressure roller (53).

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