Silk yarn stretching device for jacquard knitting

Abstract

The utility model discloses a jacquard knitting silk yarn stretching device which comprises a base, traction mechanisms are arranged at the front end and the rear end of the top end of the base, a stretching mechanism is arranged in the middle of the top end of the base and located between the traction mechanisms on the two sides, and the stretching mechanism comprises a stretching frame and a rotating disc. The middle of the stretching frame is connected with a rotating shaft, the rotating shaft is rotationally assembled on a rotating disc, a clockwork spring connected with the rotating shaft is arranged in the rotating disc, the two sides of the top end of the stretching frame are provided with a first stretching rod and a second stretching rod respectively, and the first stretching rod and the second stretching rod are each rotationally provided with a wire guide wheel. Dynamic tension control can be achieved, and full-process self-adaptive compensation of silk yarn tension is achieved through the synergistic effect of the clockwork spring and the elastic traction mechanism in combination with the sliding adjusting function of the silk yarn guiding mechanism.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, specifically a yarn stretching device for jacquard knitting. Background Technology

[0002] In the jacquard knitting production process, the uniformity and stability of yarn tension directly affect the clarity of the fabric pattern and the quality of the finished product. Traditional jacquard machines have difficulty dynamically responding to sudden changes in traction force, which can easily cause yarn breakage or uneven stretching, especially noticeable with microfiber materials. Summary of the Invention

[0003] The purpose of this invention is to provide a yarn stretching device for jacquard knitting to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a yarn stretching device for jacquard knitting, comprising a base, traction mechanisms at both ends of the top of the base, and a stretching mechanism at the middle of the top of the base, the stretching mechanism being located between the two traction mechanisms. The stretching mechanism includes a stretching frame and a turntable, the turntable being located at the middle of the top of the base, a rotating shaft connected to the middle of the stretching frame, the rotating shaft being rotatably mounted on the turntable, a spring connected to the rotating shaft being disposed inside the turntable, a first stretching rod and a second stretching rod being respectively disposed on both sides of the top of the stretching frame, and guide wheels being rotatably disposed on both the first stretching rod and the second stretching rod. The yarn is introduced from one side of the traction mechanism, passes around the first stretching rod and the second stretching rod in sequence, and is then exited from the other side of the traction mechanism, thereby the spring acting on the stretching frame to taut the yarn through the first stretching rod and the second stretching rod.

[0005] Furthermore, the traction mechanism includes a traction seat, a traction block, and several elastic bands. The traction seat has an opening, and several fixed seats are evenly distributed on the inner wall of the opening. The traction block is located inside the opening, and several connecting seats corresponding to each fixed seat are arranged around the outer wall of the traction block. Each connecting seat and fixed seat is connected by the elastic band. A wire hole is opened in the middle of the traction block.

[0006] Furthermore, at least three guide rollers are circumferentially embedded in the wire hole, and the outer edge of the guide rollers protrudes 0.5-1mm from the inner wall of the wire hole.

[0007] Furthermore, the top front and rear sides of the base are provided with wire guiding mechanisms, which are located between the traction mechanism and the tension mechanism. The wire guiding mechanism includes a support and a winding rod. Limiting grooves are opened on the top front and rear sides of the base. A sliding rod is provided in the limiting groove. The support is slidably mounted on the sliding rod on the corresponding side. A spring is connected between the support and the side wall of the limiting groove. The winding rod is installed on the top of the support.

[0008] Furthermore, a connecting frame is fitted onto the surface of the winding rod, a support frame is rotatably connected to the connecting frame, and a torsion spring is connected between the rotating shaft of the support frame and the connecting frame. A support wheel is rotatably mounted on the other end of the support frame.

[0009] Furthermore, the surface of the winding rod is covered with a rubber anti-slip layer, and the surface of the anti-slip layer is provided with an array of staggered hemispherical protrusions, with the height of a single protrusion being 0.3-0.5mm and the spacing between adjacent protrusions being 1.2-1.8mm.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This device features a compact structure and reasonable design, enabling dynamic tension control. Through the synergistic effect of the spring and elastic traction mechanism, combined with the sliding adjustment function of the wire guide mechanism, it achieves full-process adaptive compensation of wire tension. The tension frame generates a reverse torque through the pre-tightened spring, which counteracts tension fluctuations in real time as the wire moves. The double-bending path formed by the two-section tension rod and the guide wheel extends the controlled area of ​​the wire to more than three times that of the original structure. The traction mechanism adopts an elastic belt suspension system, which can absorb instantaneous energy when the wire tension changes abruptly, improve the impact load dispersion efficiency, and significantly reduce the wire breakage rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a yarn stretching device for jacquard knitting according to the present invention;

[0013] Figure 2 This is a top view of the wire stretching device of this utility model;

[0014] Figure 3 This is the front view of the traction mechanism of this utility model.

[0015] In the diagram, the components are: base-1, tension frame-2, turntable-3, first tension rod-4, second tension rod-5, guide wheel-6, traction seat-7, traction block-8, elastic band-9, through-hole-10, fixed seat-11, connecting seat-12, guide hole-13, guide roller-14, support-15, winding rod-16, limiting groove-17, slide rod-18, spring-19, connecting frame-20, support frame-21, support wheel-22, and wire-23. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 3 As shown, a yarn stretching device for jacquard knitting includes a base 1. Traction mechanisms are provided at both the front and rear ends of the top of the base 1, and a stretching mechanism is provided at the middle of the top of the base 1. The stretching mechanism is located between the two traction mechanisms. The stretching mechanism includes a stretching frame 2 and a turntable 3. The turntable 3 is located at the middle of the top of the base 1. A rotating shaft is connected to the middle of the stretching frame 2. The rotating shaft is rotatably mounted on the turntable 3. A spring 19 connected to the rotating shaft is provided inside the turntable 3. A first stretching rod 4 and a second stretching rod 5 are respectively provided on the two sides of the top of the stretching frame 2. A guide wheel 6 is rotatably provided on both the first stretching rod 4 and the second stretching rod 5. The yarn 23 is introduced from one side of the traction mechanism, passes around the first stretching rod 4 and the second stretching rod 5 in sequence, and is then led out from the other side of the traction mechanism. Thus, the spring 19 acts on the stretching frame 2, causing the first stretching rod 4 and the second stretching rod 5 to taut the yarn 23.

[0018] The wire 23 passes around the guide wheels 6 of the first and second tension rods 5 on the tension frame 2, forming two bending paths. After the spring 19 is pre-tensioned, it applies a reverse torque by rotating the tension frame 2 when the wire 23 moves, so that the two tension rods continuously tighten the wire 23. The elastic force of the spring 19 automatically compensates for the changes in the tension of the wire 23.

[0019] In this embodiment, the traction mechanism includes a traction seat 7, a traction block 8, and several elastic bands 9. The traction seat 7 has an opening 10, and several fixed seats 11 are evenly distributed on the inner wall of the opening 10. The traction block 8 is located inside the opening 10. Several connecting seats 12 corresponding to each fixed seat 11 are arranged around the outer wall of the traction block 8. Each connecting seat 12 and the fixed seat 11 are connected by an elastic band 9. A wire hole 13 is opened in the middle of the traction block 8.

[0020] The traction block 8 is suspended in the opening 10 of the traction seat 7 by multiple elastic bands 9. The wire 23 passes through the wire hole 13 in the middle of the traction block 8. When the tension of the wire 23 changes suddenly, the elastic band 9 absorbs the impact energy by stretching and contracting. The traction block 8 moves slightly within the opening 10. The elastic band 9 can withstand the instantaneous tension peak and reduce the breakage rate. Moreover, after the traction block 8 is deviated, it automatically returns to the center through the elastic band 9 to ensure that the wire 23 is always centered.

[0021] In this embodiment, at least three guide rollers 14 are embedded in the inner circumference of the wire hole 13. The outer edge of the guide rollers 14 protrudes 0.5-1mm from the inner wall of the wire hole 13. The guide rollers 14 can suppress the lateral deviation of the wire 23, ensuring that the wire 23 is always in the center position of the wire hole 13 when passing through, and each roller rotates adaptively according to the tension of the wire 23 to reduce sliding friction.

[0022] In this embodiment, a wire guide mechanism is provided on both the front and rear sides of the top of the base 1. The wire guide mechanism is located between the traction mechanism and the tension mechanism. The wire guide mechanism includes a support 15 and a winding rod 16. Limiting grooves 17 are provided on both the front and rear sides of the top of the base 1. A sliding rod 18 is provided in the limiting groove 17. The support 15 is slidably mounted on the sliding rod 18 on the corresponding side. A spring 19 is connected between the support 15 and the side wall of the limiting groove 17. The winding rod 16 is installed on the top of the support 15. A connecting frame 20 is sleeved on the surface of the winding rod 16. A support frame 21 is rotatably connected to the connecting frame 20. A torsion spring is connected between the rotating shaft of the support frame 21 and the connecting frame 20. A support wheel 22 is rotatably provided at the other end of the support frame 21.

[0023] The support 15 of the wire guide mechanism slides on the slide bar 18. The spring 19 dynamically adjusts the position of the support 15 according to the tension of the wire 23. The support frame 21 makes the support wheel 22 close to the wire 23 through the torsion spring, thereby suppressing the jumping of the wire 23 when running at high speed through the torsion spring force.

[0024] In this embodiment, the surface of the winding rod 16 is covered with a rubber anti-slip layer. The surface of the anti-slip layer has an array of staggered hemispherical protrusions, with each protrusion having a height of 0.3-0.5 mm and a spacing of 1.2-1.8 mm between adjacent protrusions. The hemispherical protrusions of the rubber anti-slip layer increase the contact area with the yarn 23 through elastic deformation, while the staggered gaps between the protrusions create a microscopic adsorption effect. When the yarn 23 is wound, the array of protrusions generates a uniformly distributed gripping force through deformation, effectively preventing slippage during high-speed yarn feeding.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A yarn stretching device for jacquard knitting, characterized in that: The device includes a base, with traction mechanisms at both the front and rear ends of the top of the base, and a tensioning mechanism at the center of the top of the base, located between the two traction mechanisms. The tensioning mechanism includes a tension frame and a turntable, with the turntable located at the center of the top of the base. A rotating shaft is connected to the center of the tension frame, and the rotating shaft is rotatably mounted on the turntable. A spring connected to the rotating shaft is installed inside the turntable. A first tension rod and a second tension rod are respectively installed on both sides of the top of the tension frame. A guide wheel is rotatably installed on both the first and second tension rods. The wire is introduced from one side of the traction mechanism, passes around the first and second tension rods in sequence, and is then exited from the other side of the traction mechanism. Thus, the spring acts on the tension frame, tauting the first and second tension rods.

2. The yarn stretching device for jacquard knitting according to claim 1, characterized in that: The traction mechanism includes a traction seat, a traction block, and several elastic bands. The traction seat has an opening, and several fixed seats are evenly distributed on the inner wall of the opening. The traction block is located inside the opening, and several connecting seats corresponding to each fixed seat are arranged around the outer wall of the traction block. Each connecting seat and fixed seat is connected by the elastic band. A wire hole is opened in the middle of the traction block.

3. The yarn stretching device for jacquard knitting according to claim 2, characterized in that: At least three guide rollers are embedded circumferentially inside the wire hole, and the outer edge of the guide rollers protrudes 0.5-1mm from the inner wall of the wire hole.

4. The yarn stretching device for jacquard knitting according to claim 1, characterized in that: The base has wire guide mechanisms on both the front and rear sides of its top end. The wire guide mechanisms are located between the traction mechanism and the tension mechanism. The wire guide mechanisms include a support and a winding rod. Limiting grooves are opened on both the front and rear sides of the top end of the base. A sliding rod is provided in the limiting groove. The support is slidably mounted on the sliding rod on the corresponding side. A spring is connected between the support and the side wall of the limiting groove. The winding rod is installed on the top of the support.

5. The yarn stretching device for jacquard knitting according to claim 4, characterized in that: A connecting frame is fitted on the surface of the winding rod, and a support frame is rotatably connected to the connecting frame. A torsion spring is connected between the rotating shaft of the support frame and the connecting frame, and a support wheel is rotatably provided at the other end of the support frame.

6. The yarn stretching device for jacquard knitting according to claim 4, characterized in that: The surface of the winding rod is covered with a rubber anti-slip layer, and the surface of the anti-slip layer is provided with an array of staggered hemispherical protrusions, with the height of a single protrusion being 0.3-0.5mm and the spacing between adjacent protrusions being 1.2-1.8mm.

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