Weft tension control device of weft knitting machine

Abstract

The utility model discloses a weft yarn tension control device of a weft knitting machine, which comprises a support frame, two ends of the support frame are rotatably connected with guide wheels, an open groove is arranged inside the support frame, a movable block slides inside the open groove, the inside of the movable block is rotatably connected with an adjusting wheel, and the adjusting wheel is connected with the guide wheels. A connecting frame is fixedly connected to the lower end of the supporting frame, an air cylinder is arranged in the connecting frame, the height of an adjusting wheel can be adjusted by arranging the air cylinder, a connecting block and a movable block, and therefore the yarn tension of the whole device can be adjusted; the damping and buffering assembly is arranged at the lower end of the movable block, damping is conducted on the adjusting wheel, meanwhile, the adjusting wheel has certain elasticity, the phenomenon of weft breaking caused by too tight yarn traction of the adjusting wheel can be effectively avoided, the device is simple in structure and convenient to operate, too tight yarn traction or weft breaking is avoided, and the service life of the adjusting wheel is prolonged. And the weaving quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of a weft yarn tension control device for a weft knitting machine, in particular to a weft yarn tension control device for a weft knitting machine. Background Art

[0002] With the continuous development and improvement of the textile knowledge system and discipline system, some advanced textile technologies have been born. Today's textiles are no longer just traditional hand-spinning and weaving, but also include non-woven fabric technology and modern three-dimensional weaving technology. Weft knitting machines are required in textile processing. The weft yarn is transported to the weft knitting machine through the yarn feeding mechanism for weaving production. When the existing equipment transports the weft yarn, it is difficult to effectively control the tension of the weft yarn, or the tension control mechanism is damaged, making it inconvenient to use. It is necessary to stop the existing equipment for a long time to transform it, which is very inconvenient to operate and affects the processing efficiency. Utility Model Content

[0003] The utility model aims to provide a weft yarn tension control device for a weft knitting machine, which solves the problem in the prior art that it is difficult to effectively control the tension of the weft yarn when the weft yarn is transported.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a weft yarn tension control device for a weft knitting machine, comprising a support frame, two ends of the support frame are rotatably connected to guide wheels, a slot is provided inside the support frame, a movable block is slidably provided inside the slot, and an adjusting wheel is rotatably connected inside the movable block;

[0005] The lower end of the support frame is fixedly connected to a connecting frame, a cylinder is arranged inside the connecting frame, an extending end of the cylinder is fixedly connected to a connecting block, an upper end of the connecting block is fixedly connected to a fixed block, a movable rod is arranged at the upper end of the fixed block, the other end of the movable rod is fixedly connected to the movable block, a limiting groove is arranged inside the fixed block, and a damping spring is fixedly connected to the inner bottom of the limiting groove.

[0006] As a further description of the above technical solution: the other end of the damping spring is fixedly connected to the limit plate, and the lower end of the movable rod passes through the fixed block and is fixedly connected to the limit plate inwardly.

[0007] As a further description of the above technical solution: sliding grooves are provided at both ends of the inner part of the slot, and the first sliding block and the second sliding block are fixedly connected at both ends of the movable block and the connecting block.

[0008] As a further description of the above technical solution: the first slider is slidably connected to the second slider inside the slide groove.

[0009] The utility model has the following beneficial effects:

[0010] 1. Compared with the prior art, the weft tension control device of a weft knitting machine can adjust the height of the adjusting wheel by arranging a cylinder, a connecting block and a movable block, so as to adjust the yarn tension of the whole device, and by arranging a shock-absorbing buffer component at the lower end of the movable block, not only the adjusting wheel is damped, but also the adjusting wheel has a certain elasticity, which can effectively avoid the adjusting wheel pulling the yarn too tightly and causing the weft to break. The device has a simple structure and is easy to operate, avoids pulling the yarn too tightly or breaking the weft, and helps to ensure the weaving quality.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is a schematic diagram of the overall structure of a weft yarn tension control device for a weft knitting machine according to the utility model;

[0014] Figure 2 This is a three-dimensional diagram of a weft yarn tension control device for a weft knitting machine according to the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of a fixed block of a weft yarn tension control device for a weft knitting machine according to the utility model;

[0016] Figure 4 The utility model is a schematic diagram of a slide groove structure of a weft yarn tension control device of a weft knitting machine.

[0017] Legend:

[0018] 1. Support frame; 2. Guide wheel; 3. Fixed block; 4. Connecting block; 5. Cylinder; 6. Connecting frame; 7. Adjusting wheel; 8. Slot; 9. Movable block; 10. Movable rod; 11. Limiting plate; 12. Limiting slot; 13. Damping spring; 14. First slider; 15. Second slider; 16. Slide slot. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-4The utility model provides an embodiment: a weft yarn tension control device for a weft knitting machine, comprising a support frame 1, two ends of the support frame 1 are rotatably connected with guide wheels 2, and the guide wheels 2 at both ends can guide the yarn, and a slot 8 is provided inside the support frame 1, and a movable block 9 is slidably provided inside the slot 8, and an adjusting wheel 7 is rotatably connected inside the movable block 9, and the yarn can be stably transported through the cooperation between the adjusting wheel 7 and the guide wheel 2;

[0021] The lower end of the support frame 1 is fixedly connected with a connecting frame 6, and a cylinder 5 is arranged inside the connecting frame 6. The extended end of the cylinder 5 is fixedly connected with a connecting block 4, and the upper end of the connecting block 4 is fixedly connected with a fixed block 3. By starting the cylinder 5, the connecting block 4 and the movable block 9 can be driven to be raised and lowered, thereby driving the adjusting wheel 7 to perform tension adjustment operations;

[0022] A movable rod 10 is provided at the upper end of the fixed block 3, and the other end of the movable rod 10 is fixedly connected to the movable block 9. A limiting groove 12 is provided inside the fixed block 3, and a damping spring 13 is fixedly connected to the inner bottom of the limiting groove 12. The other end of the damping spring 13 is fixedly connected to the limiting plate 11. The lower end of the movable rod 10 passes through the fixed block 3 and is fixedly connected to the limiting plate 11 inwardly. The yarn will generate a certain tension during the weaving process. At this time, the movable block 9 is forced to drive the limiting plate 11 to squeeze the damping spring 13. Under the action of the damping spring 13, the shock absorbing and buffering effect of the device can be achieved, so that the adjusting wheel 7 has a certain elasticity, which can effectively prevent the adjusting wheel 7 from pulling the yarn too tight, resulting in the occurrence of weft breakage. At the same time, the damping spring 13 in the device is composed of a damper and a spring, and can have its buffering and shock absorbing functions;

[0023] Slide grooves 16 are provided at both ends of the slot 8, and the first slider 14 and the second slider 15 are fixedly connected to both ends of the movable block 9 and the connecting block 4. The first slider 14 and the second slider 15 are slidably connected inside the slide groove 16. By providing the first slider 14, the second slider 15 and the slide groove 16, the stability of the adjusting wheel 7 during lifting and lowering adjustment can be ensured, and the convenience of its tension adjustment can be improved.

[0024] Working principle: When the device is in use and the tension of the yarn needs to be adjusted, the cylinder 5 inside the connecting frame 6 is started to drive the connecting block 4 to be raised and lowered, thereby driving the movable block and the adjusting wheel 7 to be adjusted in height, and adjusting the yarn tension of the entire device. In the process of use, the yarn will produce a certain tension during the weaving process. At this time, the movable block 9 is forced to drive the limit plate 11 to squeeze the damping spring 13. Under the action of the damping spring 13, the shock absorbing and buffering effect of the device can be achieved, so that the adjusting wheel 7 has a certain elasticity, which can effectively avoid the adjusting wheel 7 pulling the yarn too tightly, resulting in the occurrence of weft breakage. This device has a simple structure and is easy to operate. It can avoid pulling the yarn too tightly or breaking the weft, which helps to ensure the weaving quality.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A weft yarn tension control device for a weft knitting machine, comprising a support frame (1), characterized in that: The two ends of the support frame (1) are rotatably connected to guide wheels (2); a slot (8) is provided inside the support frame (1); a movable block (9) is slidably provided inside the slot (8); and an adjusting wheel (7) is rotatably connected inside the movable block (9); The lower end of the support frame (1) is fixedly connected to a connecting frame (6), a cylinder (5) is arranged inside the connecting frame (6), an extended end of the cylinder (5) is fixedly connected to a connecting block (4), the upper end of the connecting block (4) is fixedly connected to a fixed block (3), a movable rod (10) is arranged at the upper end of the fixed block (3), the other end of the movable rod (10) is fixedly connected to a movable block (9), a limiting groove (12) is arranged inside the fixed block (3), and a damping spring (13) is fixedly connected to the inner bottom of the limiting groove (12).

2. A weft yarn tension control device for a weft knitting machine according to claim 1, characterized in that: The other end of the damping spring (13) is fixedly connected to the limiting plate (11), and the lower end of the movable rod (10) passes through the fixed block (3) and is fixedly connected inwardly to the limiting plate (11).

3. A weft yarn tension control device for a weft knitting machine according to claim 1, characterized in that: Sliding grooves (16) are provided at both ends of the slot (8), and a first sliding block (14) and a second sliding block (15) are fixedly connected at both ends of the movable block (9) and the connecting block (4).

4. A weft yarn tension control device for a weft knitting machine according to claim 3, characterized in that: The first sliding block (14) and the second sliding block (15) are slidably connected inside the sliding groove (16).

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