Self-adaptive tension adjusting device for warp knitting machine

Abstract

The utility model discloses a kind of warp knitting machine fabric self-adapting tension adjusting device, it is related to warp knitting machine technical field, including base, the two sides of base are fixed with mounting plate symmetrically, winding roller and guide roller are rotatably connected between two mounting plates, winding motor is connected with winding roller, and guide roller is arranged at the front end of winding roller;Tensioning roller is equipped between winding roller and guide roller, and tensioning roller includes fixed sleeve and floating sleeve, and floating roller is rotatably connected outside floating sleeve, multiple spring seats are uniformly fixed on the inner wall of floating sleeve, spring is placed in spring seat, one side of spring close to floating sleeve center line is equipped with pressure block, tensioning force adjusting mechanism is equipped on fixed sleeve, for adjusting the compression degree of pressure block extruding spring, and fixed sleeve is connected with lifting adjusting mechanism.The utility model can adjust the compression amount of buffer spring under the condition of not stopping, absorbs tension fluctuation, and maintains constant conveying stress state.

Description

Technical Field

[0001] This utility model relates to the field of warp knitting machine technology, specifically to an adaptive tension adjustment device for warp knitting machine fabrics. Background Technology

[0002] A warp knitting machine is a type of textile machinery used to produce warp-knitted fabrics. It mainly consists of a warp feeding mechanism, a knitting mechanism, and a take-up and take-up mechanism. During operation, the warp yarns are unwound from the warp beams and evenly fed into the knitting mechanism via the warp feeding mechanism. In the knitting mechanism, the needles and other components move according to a specific pattern, interweaving the warp yarns to form a fabric. Warp knitting machines are highly efficient and can produce fabrics with various weave structures and patterns. They are widely used in clothing, home textiles, and industrial fabrics, such as in the production of sportswear fabrics, mosquito nets, and geotextiles, holding an important position in the textile industry.

[0003] In existing technologies, due to the high extensibility of fabrics, uneven tension and wrinkles are prone to occur. If tension is not adjusted during the fabric winding process, tension fluctuations will lead to uneven fabric tension. The existing tensioning structure works by controlling the tension rollers to press against the fabric surface, making the fabric surface wavy. However, in actual working conditions, tension fluctuations may occur during fabric conveying. Unstable tension may lead to localized overstretching or slack buildup, causing wrinkles on the knitted fabric surface, fiber damage, or even breakage, reducing production efficiency and product quality.

[0004] To solve the above problems, we can design the tension roller as a double-layer structure. By adding a spring between the inner and outer rollers as a buffer, the outer roller can float, which can solve the impact of tension fluctuations to a certain extent. However, this structure cannot adjust the spring force of the buffer springs online adaptively, and may require machine shutdown for replacement if necessary, affecting production efficiency. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an adaptive tension adjustment device for warp-knitted fabrics.

[0006] Technical solution: An adaptive tension adjustment device for warp-knitted fabrics includes a base with mounting plates symmetrically fixed on both sides. A take-up roller and a guide roller are rotatably connected between the two mounting plates. The take-up roller is connected to a take-up motor, and the guide roller is located at the front end of the take-up roller. A tension roller is provided between the take-up roller and the guide roller. The tension roller includes a fixed sleeve and a floating sleeve. A floating roller is rotatably connected to the outside of the floating sleeve. Multiple spring seats are evenly fixed on the inner wall of the floating sleeve, and a spring is placed inside the spring seat. A pressure block is provided on the side of the spring near the center line of the floating sleeve. A tension adjustment mechanism is provided on the fixed sleeve to adjust the degree of compression of the spring by the pressure block. The fixed sleeve is connected to a lifting adjustment mechanism.

[0007] Furthermore, the tension adjustment mechanism includes a threaded rod, which is coaxially rotatably connected inside the fixed sleeve. A sleeve is threadedly connected to the outer side of the threaded rod, and multiple drive plates are evenly distributed on the outer side of the sleeve. The drive plates are slidably connected to the sliding grooves on the inner wall of the fixed sleeve. The fixed sleeve is provided with guide holes corresponding to the pressure block. The end of the pressure block away from the spring passes through the guide hole, and the end of the pressure block away from the spring and the drive plate are engaged by a beveled surface.

[0008] Furthermore, a rotating handle is fixedly connected to one end of the threaded rod that extends out of the fixed sleeve.

[0009] Furthermore, the lifting adjustment mechanism includes guide grooves on two mounting plates, each guide groove having a sliding block slidably connected therein, the two sliding blocks being fixedly sleeved on both sides of a fixed sleeve, and the fixed sleeve passing through the sliding blocks, one of the sliding blocks being fixedly connected to the movable end of a cylinder.

[0010] Furthermore, each end of the floating sleeve is provided with a first bearing, the inner ring of the first bearing is fixed to the outer surface of the floating sleeve, and the outer ring of the first bearing is fixedly connected to the inner surface of the floating roller.

[0011] Furthermore, a second bearing is provided on both sides of the inside of the fixed sleeve. The inner ring of the second bearing is fixed to the outer surface of the threaded rod, and the outer ring of the second bearing is fixedly connected to the inner surface of the fixed sleeve.

[0012] Beneficial effects: This invention provides an adaptive tension adjustment device for warp knitting fabrics, which can adjust the compression of the buffer spring without stopping the machine, absorb tension fluctuations, maintain a constant conveying stress state, cope with real working conditions, ensure the stability of the fabric surface force during winding, avoid damage to the fabric caused by pulling due to unstable tension, and improve the device's performance. Attached Figure Description

[0013] Figure 1 This is a top view of the adaptive tension adjustment device for warp-knitted fabrics according to this utility model; Figure 2 This is a side view of the adaptive tension adjustment device for warp-knitted fabrics according to this utility model; Figure 3 This is a schematic diagram of the internal structure of the tension roller of this utility model; Figure 4 This is a side view of the partial structure of the tension roller of this utility model.

[0014] In the diagram: 1. Base 1; 2. Mounting plate; 3. Take-up roller; 4. Guide roller; 5. Tension roller; 51. Fixed sleeve; 52. Floating sleeve; 53. Spring seat; 54. Spring; 55. Pressure block; 56. Floating roller; 6. Tension adjustment mechanism; 61. Pattern rod; 62. Sleeve; 63. Moving plate; 64. Slide groove; 65. Rotary handle; 7. Lifting adjustment mechanism; 71. Guide groove; 72. Sliding block; 73. Cylinder; 8. First bearing; 9. Second bearing. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings.

[0016] As attached Figure 1 To be continued Figure 4 . Specific implementation examples:

[0018] An adaptive tension adjustment device for warp-knitted fabrics includes a base 1, with mounting plates 2 symmetrically fixed on both sides of the base 1. A take-up roller 3 and a guide roller 4 are rotatably connected between the two mounting plates 2. The take-up roller 3 is connected to a take-up motor, and the guide roller 4 is located at the front end of the take-up roller 3. A tension roller 5 is provided between the take-up roller 3 and the guide roller 4. The tension roller 5 includes a fixed sleeve 51 and a floating sleeve 52. A floating roller 56 is rotatably connected to the outside of the floating sleeve 52. Multiple spring seats 53 are evenly fixed on the inner wall of the floating sleeve 52. A spring 54 is placed inside the spring seat 53. A pressure block 55 is provided on the side of the spring 54 near the center line of the floating sleeve 52. A tension adjustment mechanism 6 is provided on the fixed sleeve 51 to adjust the degree of compression of the spring 54 by the pressure block 55. The fixed sleeve 51 is connected to a lifting adjustment mechanism 7.

[0019] In one embodiment of this utility model, the tension adjustment mechanism 6 includes a threaded rod 61, which is coaxially rotatably connected inside the fixed sleeve 51. A sleeve 62 is threadedly connected to the outer side of the threaded rod 61. Multiple drive plates 63 are evenly distributed on the outer side of the sleeve 62. The drive plates 63 are slidably connected to the grooves 64 on the inner wall of the fixed sleeve 51. The fixed sleeve 51 is provided with guide holes corresponding to the pressure block 55. The end of the pressure block 55 away from the spring 54 passes through the guide hole. The end of the pressure block 55 away from the spring 54 and the drive plate 63 are engaged by a beveled surface.

[0020] Preferably, a rotating handle 65 is fixedly connected to one end of the threaded rod 61 that extends out of the fixed sleeve 51.

[0021] The working principle of the adaptive tension adjustment device for warp knitting machine fabric of this utility model is as follows: In use, the finished fabric is guided by the guide roller 4 and then wound onto the take-up roller 3. The take-up motor drives the take-up roller 3 to rotate and take up the finished fabric. To maintain a certain tension, the lifting adjustment mechanism 7 drives the fixed sleeve 51 and the floating roller 56 to press down on the finished fabric. Since the floating roller 56 is rotatably connected to the floating sleeve 52, it will passively rotate due to the friction of the fabric. Rolling friction is smaller than sliding friction, which can avoid excessive friction and fabric wear. Multiple springs 54 are provided between the floating sleeve 52 and the fixed sleeve 51. Initially, the floating roller 56 and the floating sleeve 52 are offset downward relative to the axis of the fixed sleeve 51. When the working conditions fluctuate, for example, when the fabric becomes loose, the compression of the springs 54 decreases, and this offset decreases; when the fabric becomes tight, the compression of the springs 54 increases, and this offset continues to increase, thus forming a buffer.

[0022] This embodiment allows adjustment of the initial compression of spring 54, thereby adjusting its buffering capacity without requiring machine shutdown. During operation, rotating handle 65 rotates the threaded rod 61, driving the threaded sleeve 62 to move. This causes the drive plate 63 on sleeve 62 to press the pressure block 55, which in turn compresses spring 54. The increased compression of spring 54 alters its buffering capacity to adapt to actual working conditions. Furthermore, since the fixed sleeve 51 and floating sleeve 52 do not rotate, only the floating roller 56 rotates passively. Therefore, adjusting the spring compression does not require machine shutdown. Combined with the lifting adjustment mechanism 7, this embodiment's adaptive tension adjustment device for knitting fabrics allows for more precise tension adjustment.

[0023] In this embodiment, a pressure sensor can also be placed on the contact surface of the pressure block 55 near the spring 54 to monitor fluctuations in the working conditions in real time. If the pressure is too high or too low, it indicates that the position of the floating roller 56 or the compression of the spring 54 is not properly adjusted and needs to be readjusted. This can be done in conjunction with an intelligent controller to adjust the lifting and spring compression. Furthermore, different spring compression values ​​can be adjusted according to the type of fabric. For example, for fabrics with low tear resistance, the spring compression value should be set as low as possible to achieve a larger offset and less force, thus meeting actual needs.

[0024] The lifting and adjusting mechanism 7 includes guide grooves 71 on two mounting plates 2. Each guide groove 71 has a sliding block 72 slidably connected to it. The two sliding blocks 72 are fixedly sleeved on both sides of a fixed sleeve 51, with the fixed sleeve 51 passing through the sliding blocks 72. One of the sliding blocks 72 is fixedly connected to the movable end of a cylinder 73. The cylinder 73 drives the fixed sleeve 51, floating sleeve 52, and floating roller 56 to squeeze the finished fabric, adjusting the initial tension. Furthermore, the buffering capacity of the spring 54 is adjusted by rotating the threaded rod 61.

[0025] Preferably, both ends of the floating sleeve 52 are provided with a first bearing 8, the inner ring of the first bearing 8 is fixed to the outer surface of the floating sleeve 52, and the outer ring of the first bearing 8 is fixedly connected to the inner surface of the floating roller 56.

[0026] Preferably, a second bearing 9 is provided on both sides of the inside of the fixed sleeve 51. The inner ring of the second bearing 9 is fixed to the outer surface of the threaded rod 61, and the outer ring of the second bearing 9 is fixedly connected to the inner surface of the fixed sleeve 51.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection of the claims of this application.

Claims

1. An adaptive tension adjustment device for warp-knitted fabrics, characterized in that, The device includes a base, with mounting plates symmetrically fixed on both sides. A take-up roller and a guide roller are rotatably connected between the two mounting plates. The take-up roller is connected to a take-up motor, and the guide roller is located at the front end of the take-up roller. A tension roller is provided between the take-up roller and the guide roller. The tension roller includes a fixed sleeve and a floating sleeve. A floating roller is rotatably connected to the outside of the floating sleeve. Multiple spring seats are evenly fixed on the inner wall of the floating sleeve, and a spring is placed inside the spring seat. A pressure block is provided on the side of the spring near the center line of the floating sleeve. A tension adjustment mechanism is provided on the fixed sleeve to adjust the degree of compression of the spring by the pressure block. The fixed sleeve is connected to a lifting adjustment mechanism.

2. The adaptive tension adjustment device for warp-knitted fabrics according to claim 1, characterized in that, The tension adjustment mechanism includes a threaded rod, which is coaxially rotatably connected inside the fixed sleeve. A sleeve is threadedly connected to the outside of the threaded rod. Multiple drive plates are evenly distributed on the outside of the sleeve. The drive plates are slidably connected to the sliding grooves on the inner wall of the fixed sleeve. The fixed sleeve is provided with guide holes for corresponding pressure blocks. The end of the pressure block away from the spring passes through the guide hole, and the end of the pressure block away from the spring is engaged with the drive plate through a beveled surface.

3. The adaptive tension adjustment device for warp-knitted fabrics according to claim 2, characterized in that, A rotating handle is fixedly connected to one end of the threaded rod that extends out of the fixed sleeve.

4. The adaptive tension adjustment device for warp-knitted fabrics according to claim 2 or 3, characterized in that, The lifting and adjusting mechanism includes guide grooves on two mounting plates, each guide groove having a sliding block slidably connected therein. The two sliding blocks are fixedly sleeved on both sides of a fixed sleeve, and the fixed sleeve passes through the sliding blocks. One of the sliding blocks is fixedly connected to the movable end of a cylinder.

5. The adaptive tension adjustment device for warp-knitted fabrics according to claim 2, characterized in that, Both ends of the floating sleeve are provided with a first bearing. The inner ring of the first bearing is fixed to the outer surface of the floating sleeve, and the outer ring of the first bearing is fixedly connected to the inner surface of the floating roller.

6. The adaptive tension adjustment device for warp-knitted fabrics according to claim 2, characterized in that, The fixed sleeve has a second bearing on both sides inside. The inner ring of the second bearing is fixed to the outer surface of the threaded rod, and the outer ring of the second bearing is fixedly connected to the inner surface of the fixed sleeve.

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