Tension-adjustable cloth unwinding machine

Abstract

The application relates to a cloth unwinding machine with adjustable tension, which comprises a rack, an unwinding assembly and a placing rack, the rack is rotationally connected with a rotating rod, one end of the rotating rod away from the rack is rotationally connected with a tension roller, the rack is connected with a rotating assembly, the rotating assembly is used for driving the rotating rod to rotate and driving the tension roller to tension the cloth. When in use, the rotating assembly drives the rotating rod to rotate, the rotating rod drives the tension roller to move and change the position, the tension roller applies tension to the cloth, so that the tension size during the unwinding of the cloth is adjusted, the unwinding effect is avoided from being influenced by excessively large or small tension, and the unwinding stability is improved.

Description

Technical Field

[0001] This application relates to the field of unwinding machines, and more particularly to a tension-adjustable fabric unwinding machine. Background Technology

[0002] Unwinding machines are key pieces of equipment in textile production used to unwind rolled fabrics.

[0003] Chinese Patent No. CN205616294U discloses an unwinding machine, including a frame and a guide roller assembly. The guide roller assembly includes a coarse roller and a fine roller rotatably connected to the frame. Fixed frames are provided at both ends of the frame for the fine roller to slide. Sliding blocks with lead screws that are inserted and lifted at the upper end of the fixed frames are provided at both ends of the fine roller. Positioning components for fixing the lead screws are provided on the fixed frames.

[0004] Regarding the aforementioned technologies, during use, there are instances where the fabric tension is too high or too low. Excessive tension can cause the fabric to stretch and deform, or even break, affecting the fabric quality. Insufficient tension, on the other hand, can cause the fabric to sag and become wrinkled or shifted, affecting the unwinding effect. Utility Model Content

[0005] To improve the fabric unwinding effect, this application provides a fabric unwinding machine with adjustable tension.

[0006] The tension-adjustable fabric unwinding machine provided in this application adopts the following technical solution: An adjustable tension fabric unwinding machine includes a frame, an unwinding assembly, and a placement frame. The frame is rotatably connected to a rotating rod, and a tensioning roller is rotatably connected to the end of the rotating rod away from the frame. The frame is connected to a rotating assembly, which is used to drive the rotating rod to rotate and drive the tensioning roller to tension the fabric.

[0007] By adopting the above technical solution, during use, the rotating component drives the rotating rod to rotate, the rotating rod drives the tension roller to move and change position, and the tension roller applies tension to the fabric, thereby adjusting the tension when the fabric is unwound, so as to avoid the tension being too large or too small, which would affect the unwinding effect and improve the unwinding stability.

[0008] Optionally, the rotating assembly includes a first motor, a worm gear, and a worm. The worm gear is connected to one end of the rotating rod and is rotatably connected to the frame. The worm is rotatably connected to the frame, and the worm gear meshes with the worm. The first motor is connected to the frame, and the output shaft of the first motor is connected to the worm.

[0009] By adopting the above technical solution, during use, the first motor drives the worm to rotate, the worm drives the meshing worm wheel to rotate, and the worm wheel drives the rotating rod to rotate. In this way, the rotating rod is rotated through the worm wheel and worm gear transmission. The transmission is smooth and has a self-locking function, which makes the position of the tension roller stable and facilitates precise control of the tension.

[0010] Optionally, the rotating rod includes a first rod and a second rod. The first rod is connected to the frame, and the second rod is slidably sleeved on the first rod. The rotating rod is provided with an elastic element, which is used to drive the second rod to move and cause the rotating rod to extend.

[0011] By adopting the above technical solution, during use, the elastic element drives the second rod to slide relative to the first rod, causing the rotating rod to extend. This allows the tension roller to adapt to small changes in fabric tension as the second rod moves, thereby buffering fabric tension fluctuations, minimizing the risk of fabric damage due to sudden tension changes, and improving unwinding safety.

[0012] Optionally, the elastic element is a spring, with one end of the spring connected to the first rod and the other end of the spring connected to the second rod.

[0013] By adopting the above technical solution, the spring's elastic properties achieve a buffering effect during use, resulting in a simple and reliable structure.

[0014] Optionally, there are two rotating rods, with one end of the two rotating rods connected to each other, and the fabric is wound in an S-shape and passed through the two tension rollers in sequence.

[0015] By adopting the above technical solution, the two tension rollers apply tension to the fabric respectively, thereby increasing the tension adjustment range of the tension rollers on the fabric, improving the tension adjustment effect, and improving the smoothness of fabric unwinding.

[0016] Optionally, the frame is connected to a spreading plate, the length direction of which is consistent with the width direction of the fabric, the spreading plate is set as an arc-shaped plate with a central convexity, and the convex arc surface of the spreading plate faces the fabric.

[0017] By adopting the above technical solution, when the fabric passes through the expansion plate, the convex arc surface of the expansion plate contacts the fabric, and an expansion force is applied to the width direction of the fabric to avoid wrinkles or displacement when the fabric is unwound, so that the fabric is unfolded flat and the unwound quality is improved.

[0018] Optionally, the frame is connected to a pusher for moving the spreader plate toward or away from the fabric.

[0019] By adopting the above technical solution, when in use, the pusher moves the expansion plate to adjust the distance between it and the fabric, so that the expansion plate can adapt to fabrics of different thicknesses or materials, thereby enhancing the versatility of the expansion plate.

[0020] Optionally, a flexible layer is provided around the periphery of the expansion plate.

[0021] By adopting the above technical solution and adding a flexible layer, the rigid expansion plate can be used to avoid scratching or damaging the fabric surface as much as possible, thereby protecting the fabric surface quality and improving product quality.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. During use, the rotating component drives the rotating rod to rotate, which in turn drives the tension roller to move and change position. The tension roller applies tension to the fabric, thereby adjusting the tension during unwinding and minimizing the impact of excessive or insufficient tension on the unwinding effect, thus improving unwinding stability. 2. In use, the first motor drives the worm to rotate, the worm drives the meshing worm wheel to rotate, and the worm wheel drives the rotating rod to rotate. The rotating rod is rotated through the worm wheel and worm gear transmission. The transmission is smooth and has a self-locking function, which makes the position of the tensioning roller stable and facilitates precise control of the tension. 3. During use, the fabric passes through the expansion plate, and the convex arc surface of the expansion plate contacts the fabric, applying an expansion force in the width direction of the fabric. This helps to avoid wrinkles or shifts in the fabric during unwinding, ensuring that the fabric unfolds smoothly and improving the unwinding quality. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0024] Figure 2 This is a top view of this embodiment.

[0025] Figure 3 This is the embodiment. Figure 2 Sectional view along the AA direction.

[0026] Explanation of reference numerals in the attached drawings: 100, frame; 110, mounting cavity; 120, expansion plate; 140, first cylinder; 200, unwinding assembly; 210, first unwinding roller; 220, second unwinding roller; 230, driving component; 231, first pulley; 232, second pulley; 233, belt; 234, second motor; 300, placement frame; 400, rotating rod; 410, rotating shaft; 420, first rod; 430, second rod; 440, spring; 500, tension roller; 600, rotating assembly; 610, first motor; 620, worm gear; 630, worm. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses a tension-adjustable fabric unwinding machine. (Refer to...) Figure 1 and Figure 2An adjustable tension fabric unwinding machine includes a frame 100, an unwinding assembly 200, and a placement rack 300 for holding fabric rolls. A rotating rod 400 is rotatably connected to the frame 100, and a tension roller 500 is rotatably connected to the end of the rotating rod 400 away from the frame 100. The length direction of the tension roller 500 is aligned with the width direction of the fabric. By rotating the rotating rod 400, the position of the tension roller 500 is changed, causing the tension roller 500 to tension the fabric, thereby minimizing excessive or insufficient fabric tension and improving the unwinding effect.

[0029] Reference Figure 1 There are two rotating rods 400, with one end connected to each other. A tension roller 500 is connected to the end of the rotating rod 400 away from the other rotating rod 400. The fabric is wound in an S-shape and passed sequentially through the two tension rollers 500. A rotating shaft 410 is provided between the two rotating rods 400. The length direction of the rotating shaft 410 is consistent with the width direction of the fabric. The rotating shaft 410 is connected to the two rotating rods 400 and is rotatably connected to the frame 100.

[0030] Reference Figure 1 The rotating rod 400 includes a first rod 420 and a second rod 430. The length direction of the first rod 420 is the same as that of the second rod 430. One end of the first rod 420 of the two rotating rods 400 is connected to each other. The second rod 430 is slidably sleeved on the first rod 420 and slides along the length direction of the first rod 430 to engage with the first rod 420. The first rod 420 is connected to an elastic element, which is a spring 440. The length direction of the spring 440 is the same as that of the first rod 420. One end of the spring 440 is connected to the first rod 420, and the other end of the spring 440 is connected to the second rod 430. The spring 440 is used to drive the second rod 430 to move and drive the rotating rod 400 to extend.

[0031] Reference Figure 1 and Figure 3 The frame 100 has a mounting cavity 110, and the rotating shaft 410 is rotatably connected to the inner wall of the mounting cavity 110. A rotating assembly 600 is connected to the frame 100, which drives the rotating shaft 410 to rotate. The rotating assembly 600 includes a first motor 610, a worm gear 620, and a worm 630. Both the worm gear 620 and the worm 630 are located within the mounting cavity 110. The worm gear 620 is sleeved on the rotating shaft 410, and its central axis is collinear with the central axis of the rotating shaft 410. The worm 630 is rotatably connected to the inner wall of the mounting cavity 110 and meshes with the worm gear 620. The first motor 610 is connected to the frame 100, and its output shaft is connected to the worm 630. The first motor 610 drives the worm gear 630 to rotate, which in turn drives the worm wheel 620 to rotate. The rotating rod 400 and the rotating shaft 410 follow the rotation of the worm wheel 620, thereby changing the position of the tension roller 500 and adjusting the length of the fabric movement path to facilitate the adjustment of fabric tension. Reference Figure 1 The frame 100 is connected to an expansion plate 120, the length of which is aligned with the width of the fabric. A flexible layer made of rubber is provided around the periphery of the expansion plate 120. The placement frame 300, the expansion plate 120, and the tension roller 500 are distributed sequentially at intervals along the fabric transport direction. The expansion plate 120 is a centrally convex arc-shaped plate, with its convex arc surface facing the fabric.

[0032] Reference Figure 1 The frame 100 is connected to a pusher, which is a first cylinder 140. The cylinder body of the first cylinder 140 is connected to the frame 100, and the piston rod of the first cylinder 140 is connected to the spreading plate 120. The pusher is used to drive the spreading plate 120 to move in the direction toward or away from the fabric. By adding the spreading plate 120, when the fabric passes through the spreading plate 120, it is guided by the spreading plate 120 to flatten the fabric, thereby reducing fabric wrinkles and improving the unwinding effect.

[0033] Reference Figure 1 The unwinding assembly 200 includes a first unwinding roller 210, a second unwinding roller 220, and a drive unit 230. The first unwinding roller 210 and the second unwinding roller 220 are rotatably connected to the frame 100. The first unwinding roller 210 and the second unwinding roller 220 are distributed at intervals in the vertical direction, and gaps are provided between the first unwinding roller 210 and the second unwinding roller 220 to allow the fabric to pass through. The drive unit 230 is used to drive the first unwinding roller 210 to rotate. The drive unit 230 includes a first pulley 231, a second pulley 232, a belt 233, and a second motor 234. The first pulley 231 is sleeved on one end of the first unwinding roller 210, and the central axis of the first pulley 231 is collinear with the central axis of the first unwinding roller 210. The second pulley 232 is rotatably connected to the frame 100, and the second motor 234 is connected to the frame 100. The output shaft of the second motor 234 is connected to the second pulley 232, and the central axis of the second pulley 232 is collinear with the central axis of the output shaft of the second motor 234. One end of the belt 233 is sleeved on the first pulley 231, and the other end of the belt 233 is sleeved on the second pulley 232.

[0034] The implementation principle of the tension-adjustable fabric unwinding machine according to an embodiment of this application is as follows: During fabric unwinding, the fabric roll is first placed on the placement frame 300. After the fabric is drawn out from the roll, it passes through the expansion plate 120, the tension roller 500, and the unwinding assembly 200 in sequence to complete the unwinding process. When the tension is too low, the first motor 610 is started. The first motor 610 drives the worm gear 630 to rotate, which in turn drives the meshing worm wheel 620 to rotate. The worm wheel 620 drives the rotating shaft 410 to rotate synchronously, thereby driving the rotating rod 400 to rotate. The tension roller 500 moves with the rotating rod 400, increasing the path the fabric travels, thereby increasing the tension on the fabric and increasing the fabric tension to a suitable range. When the tension is too high, the rotating assembly 600 drives the rotating rod 400 to rotate in the opposite direction, shortening the path the fabric travels and reducing the tension on the fabric. This facilitates the adjustment of the fabric tension and minimizes the impact of excessive or insufficient tension on the fabric unwinding effect.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tension-adjustable fabric unwinding machine, comprising a frame (100), an unwinding assembly (200), and a placement rack (300), characterized in that: The frame (100) is rotatably connected to a rotating rod (400), and a tensioning roller (500) is rotatably connected to one end of the rotating rod (400) away from the frame (100). The frame (100) is connected to a rotating assembly (600), which is used to drive the rotating rod (400) to rotate and drive the tensioning roller (500) to tension the fabric.

2. The tension-adjustable fabric unwinding machine according to claim 1, characterized in that: The rotating assembly (600) includes a first motor (610), a worm gear (620), and a worm (630). The worm gear (620) is connected to one end of the rotating rod (400) and is rotatably connected to the frame (100). The worm (630) is rotatably connected to the frame (100) and the worm gear (620) meshes with the worm (630). The first motor (610) is connected to the frame (100), and the output shaft of the first motor (610) is connected to the worm (630).

3. The tension-adjustable fabric unwinding machine according to claim 2, characterized in that: The rotating rod (400) includes a first rod (420) and a second rod (430). The first rod (420) is connected to the frame (100), and the second rod (430) is slidably sleeved on the first rod (420). The rotating rod (400) is provided with an elastic element, which is used to drive the second rod (430) to move and drive the rotating rod (400) to extend.

4. A tension-adjustable fabric unwinding machine according to claim 3, characterized in that: The elastic element is a spring (440), one end of which is connected to the first rod (420), and the other end of which is connected to the second rod (430).

5. A tension-adjustable fabric unwinding machine according to claim 2, characterized in that: There are two rotating rods (400), and one end of the two rotating rods (400) is connected to each other. The fabric is wound in an S-shape and passed through two tension rollers (500) in sequence.

6. A tension-adjustable fabric unwinding machine according to claim 1, characterized in that: The frame (100) is connected to a spreader plate (120). The length direction of the spreader plate (120) is consistent with the width direction of the fabric. The spreader plate (120) is set as an arc-shaped plate with a central protrusion. The convex arc surface of the spreader plate (120) faces the fabric.

7. A tension-adjustable fabric unwinding machine according to claim 6, characterized in that: The frame (100) is connected to a pusher, which is used to drive the spreader plate (120) to move toward or away from the fabric.

8. A tension-adjustable fabric unwinding machine according to claim 7, characterized in that: The expansion plate (120) has a flexible layer around its periphery.

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