Spandex tension compensation device

Abstract

The utility model discloses a spandex tension compensation device which comprises a let-off motor, a guide rod transmission motor, a positive rotation guide rod, a steering guide rod and a tension compensation swing rod, the rotation speed of the positive rotation guide rod is adjusted through the guide rod transmission motor, and overfeeding of spandex yarn is achieved through friction force on the surface of the positive rotation guide rod. Additional drafting of spandex yarn due to friction of a steering guide rod is well eliminated, and larger spandex drafting degree is reserved for a looping part of the warp knitting machine; in addition, by means of swinging of the tension compensation swing rod, when a needle bed swings greatly in the looping process of the warp knitting machine, repeated drafting of spandex can be buffered, drafting of the needle bed to spandex yarn in the swinging process is effectively adjusted and reduced, the situation that the spandex yarn is broken due to excessive drafting caused by swinging of the needle bed is well avoided, and the warp knitting quality is improved. According to the spandex tension compensation device, normal knitting can be achieved under the condition that the spandex yarn feeding amount is as small as possible, and therefore coils formed by spandex can be fully retracted.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a spandex tension compensation device. Background Art

[0002] Spandex, short for polyurethane fiber, is widely used in fabric weaving, for example, in the weaving of the ground mesh (i.e., bottom mesh) structure of warp knitted products. Spandex yarn has excellent elasticity. To achieve maximum spandex retraction, it is usually necessary to reduce the amount of spandex fed. However, it is well known that spandex is a relatively poor fiber in terms of strength. During the looping process of a warp knitting machine, when the needle bed swings significantly, it is easy to cause excessive pulling force on the spandex. This can easily lead to excessive stretching of the spandex during the weaving process, resulting in yarn breakage and affecting normal weaving. Therefore, the present invention proposes a spandex tension compensation device. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a spandex tension compensation device that can solve the above technical problems.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a spandex tension compensation device, including a warp let-off motor, a guide rod transmission motor, an actively rotating guide rod, a steering guide rod and a tension compensation rocker arm. The guide rod transmission motor is connected to the actively rotating guide rod to drive the actively rotating guide rod to rotate. The actively rotating guide rod is arranged between the warp let-off motor and the steering guide rod. The steering guide rod is arranged between the actively rotating guide rod and the tension compensation rocker arm.

[0007] Preferably, the guide rod drive motor is connected to the actively rotating guide rod via gears and a transmission belt.

[0008] Preferably, the spandex tension compensation device further comprises a control electric box, which is connected to the guide rod transmission motor.

[0009] Preferably, the spandex tension compensation device further includes a yarn separation comb, and the tension compensation rocker is arranged between the steering guide rod and the yarn separation comb.

[0010] Preferably, the warp let-off motor is connected to a yarn bobbin.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the present invention provides a spandex tension compensation device with the following beneficial effects: (1) the rotation speed of the actively rotating guide rod is adjusted by the guide rod transmission motor, and the friction force on the surface of the actively rotating guide rod is used to achieve overfeeding of the spandex yarn, thereby effectively eliminating the additional stretching of the spandex yarn due to the friction of the steering guide rod, and reserving a larger spandex stretchability for the loop forming mechanism of the warp knitting machine; (2) when the spandex yarn reaches the tension compensation rocker, the tension compensation rocker is further swung to buffer the repeated stretching of the spandex when the needle bed swings greatly during the loop forming process of the warp knitting machine, effectively adjust and reduce the pulling of the spandex yarn by the needle bed during the swinging process, and better avoid the spandex yarn breakage caused by excessive stretching caused by the swinging of the needle bed, thereby ensuring normal weaving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a spandex tension compensation device of the utility model;

[0014] Figure 2 Schematic diagram of the structure of the tension compensation swing rod of the utility model in different positions. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] The present invention provides a spandex tension compensation device, comprising a warp let-off motor 1, a guide rod transmission motor 2, an actively rotating guide rod 3, a steering guide rod 4, and a tension compensation swing rod 5. The guide rod transmission motor 2 is connected to the actively rotating guide rod 3 to drive the actively rotating guide rod 3 to rotate. The actively rotating guide rod 3 is disposed between the warp let-off motor 1 and the steering guide rod 4. The steering guide rod 4 is disposed between the actively rotating guide rod 3 and the tension compensation swing rod 5. The warp let-off motor 1, the guide rod transmission motor 2, the actively rotating guide rod 3, the steering guide rod 4, and the tension compensation swing rod 5 of the present invention are all prior art.

[0017] Specifically, the guide rod drive motor 2 is connected to the actively rotating guide rod 3 through gears and a transmission belt to drive the actively rotating guide rod 3 to rotate.

[0018] Specifically, the spandex tension compensation device of the present invention may further include a control box connected to the guide rod drive motor 2. The control box can control the speed of the guide rod drive motor 2. The control box may be provided with a data port for connection to a computer. By inputting a preset transmission ratio via an external computer, the speed of the guide rod drive motor 2 can be controlled to achieve control and regulation of the speed of the actively rotating guide rod 3. Of course, other motor control devices in the prior art may also be used, and this is not excessively limited here.

[0019] The present invention may also include a yarn splitting comb 6, and the tension compensation rocker 5 is arranged between the steering guide rod 4 and the yarn splitting comb 6. The spandex yarn of the tension compensation rocker 5 is transmitted to the needle bed of the warp knitting machine for weaving through the yarn splitting comb 6. The yarn splitting comb 6 is an existing technology and will not be described in detail here.

[0020] Specifically, the warp let-off motor 1 is connected to a bobbin wound with spandex yarn. The spandex yarn is then transferred to an actively rotating guide rod 3 via the warp let-off motor 1. Furthermore, the spandex yarn is transferred to a tension-compensating rocker 5 via a steering guide rod 4. It will be appreciated that the tension-compensating rocker 5 can swing up and down, specifically by means of a spring to reset the tension-compensating rocker 5. The tension-compensating rocker 5 of the present invention utilizes a conventional rocker device and is not subject to further limitations herein.

[0021] It can be understood that by controlling the speed of the guide rod drive motor 2 to control and adjust the speed of the actively rotating guide rod 3, the friction on the surface of the actively rotating guide rod 3 is used to overfeed the spandex yarn, which effectively eliminates the additional stretching of the spandex yarn due to the friction of the turning guide rod 4, and reserves a larger spandex stretchability for the warp knitting machine loop forming parts. That is, by adjusting the speed of the actively rotating guide rod 3, the actively rotating guide rod 3 can actively reduce the stretching rate of the spandex yarn in each stroke to a minimum, thereby reducing the pulling force on the spandex yarn during the swinging of the needle bed.

[0022] In addition, during the looping process, as the needle bed continues to move, the pulling force on the warp yarn (spandex) will increase. When the needle bed moves downward to the lowest point, the force on the warp yarn reaches its peak. The spandex yarn fineness is only 30D, which is very thin and prone to yarn breakage. Therefore, the present invention adds a tension compensation rocker 5, such as Figure 2 As shown, when the needle bed swings to the highest point, the tension compensation rocker 5 also reaches the highest point (as shown in FIG. Figure 2 Position 11), at this time, the spandex yarn maintains a certain tension stored in the yarn path; when the needle bed swings down to the loop-removing position, that is, the needle bed swings to the lowest point, the pulling force on the spandex yarn is large, and the tension compensation rocker 5 is in a position where the tension is compensated as the needle bed swings downward. Figure 2At position 22, the tension compensating rocker 5 releases as much spandex yarn as possible, reducing the pulling force on the spandex yarn from the needle bed and effectively solving the problem of spandex yarn breakage. In this way, the spandex tension compensating device of the present invention can knit normally while ensuring that the spandex yarn feed amount is minimized, so that the spandex loops formed can fully retract.

[0023] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spandex tension compensation device comprising a let-off motor, a guide rod transmission motor, an actively rotating guide rod, a steering guide rod, and a tension compensation rocker, characterized in that: The guide rod transmission motor is connected to the actively rotating guide rod to drive the actively rotating guide rod to rotate. The actively rotating guide rod is arranged between the warp feed motor and the steering guide rod. The steering guide rod is arranged between the actively rotating guide rod and the tension compensation rocker.

2. The spandex tension compensation device according to claim 1, characterized in that: The guide rod transmission motor is connected to the actively rotating guide rod through gears and a transmission belt.

3. The spandex tension compensation device according to claim 1, characterized in that: It also includes a control electric box, which is connected to the guide rod transmission motor.

4. The spandex tension compensation device according to claim 1, characterized in that: It also includes a yarn splitting comb, and the tension compensation rocker is arranged between the steering guide rod and the yarn splitting comb.

5. The spandex tension compensation device according to claim 1, characterized in that: The warp let-off motor is connected with a yarn bobbin.

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