A yarn tension detection mechanism for a chenille yarn spinning device
By designing the moving pulley structure and the yarn tension detection mechanism of the distance measuring sensor in the Chenilli yarn spinning device, the problems of yarn tension unstable and fracture detection delay are solved, and the stability of yarn tension and the timely triggering of the broken alarm are achieved.
Patent Information
- Application Number
- CN202411850894.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-04-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing yarn tensioning mechanism cannot ensure that the yarn tension remains unchanged, and the yarn break cannot be detected as soon as possible.
A yarn tension detection mechanism for the Chenilli yarn spinning device is designed, using a moving pulley structure and a distance measuring sensor. Through the coordination of the movable gear and the detection plate, the tension of the yarn is monitored and adjusted in real time, and the wire break alarm is triggered through the micro switch.
The stability of yarn tension is achieved, and the yarn tension changes caused by mismatch in the input and output speeds are avoided. The disconnection alarm is triggered in a timely manner to ensure that the production personnel detect the yarn breaking as soon as possible.
Smart Images
Figure CN119777040A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a yarn tensioning mechanism, in particular to a yarn tensioning degree detecting mechanism of a chenille yarn spinning device. Background Art
[0002] Chenille yarn, scientifically known as spiral long-pile yarn, is a new type of fancy yarn, also known as chenille. Chenille yarn is composed of core yarn and broken velvet fiber. The core yarn generally uses strands with better strength, such as acrylic yarn and polyester yarn, and also uses cotton yarn with a larger twist. The broken velvet material is mainly based on soft, good moisture absorption and dissipation viscose fiber and cotton fiber, and fluffy and soft acrylic can also be used. In the production process of chenille yarn, two strands are used as core yarns, and feather yarn (short feathers made of soft fibers) are sandwiched in the middle by twisting. In this way, the fiber is held on the core yarn of the twisted yarn, forming a bottle brush-like shape, giving the chenille yarn a unique feel and appearance.
[0003] Chenille yarn production requires the use of chenille spinning machines. Existing chenille spinning machines are equipped with yarn tensioning mechanisms to deal with sudden changes in yarn input speed and output speed, which can avoid sudden changes in yarn tension and thus avoid yarn breakage. However, existing yarn tensioning mechanisms generally use swing arms with elastic structures to control yarn tension. As the swing amplitude changes, the tensioning force of the swing arm will actually be different, and the tension cannot be guaranteed to remain unchanged. At the same time, existing yarn tensioning mechanisms cannot detect yarn breakage in the first place. Summary of the invention
[0004] The invention provides a yarn tension detection mechanism of a chenille yarn spinning device, which solves the problem in the prior art that the yarn tension changes to a certain extent as a swing arm on a tensioning mechanism swings.
[0005] The above-mentioned technical problem of the present invention is mainly solved by the following technical scheme: a yarn tension detection mechanism of a chenille yarn spinning device, comprising a mounting seat, on which a vertically distributed fixed rack is provided, and a vertical slide rail is provided, on which a movable rack is slidably mounted, a movable gear is meshed between the fixed rack and the movable rack, and two sides of the movable gear are provided with a first guard plate and a second guard plate fixed relative to the mounting seat, a vertical first slide groove is provided on the first guard plate, and a vertical second slide groove is provided on the second guard plate, a first movable block connected to the movable gear for coaxial rotation with the movable gear is slidably mounted in the first slide groove, and a second movable block connected to the movable gear for coaxial rotation with the movable gear is slidably mounted in the second slide groove, an extension rod is extended upwardly on the first movable block, and a guide wheel is rotatably mounted on the extension rod; a detection plate is fixed on the movable rack, and a distance measuring sensor facing the detection plate is provided on the mounting seat.
[0006] The tensioning principle of the present invention is as follows: when the chenille yarn passes around the wire wheel, the movable rack will tend to slide upward due to its own weight, and its gravity will be converted into a pulling force that pulls the movable gear to roll downward. At the same time, the movable gear itself also tends to roll downward due to its own weight. Therefore, the weight of the movable gear, the movable rack, the first movable block and the second movable block all become part of the pre-tensioning force. When the chenille yarn has a sudden change in yarn tension due to mismatch between input and output speeds, the pulling force of the chenille yarn on the wire wheel will change. At this time, the height position of the movable gear will change adaptively to stabilize the tension of the yarn. At the same time, the ranging sensor can monitor the position change of the detection plate in real time. When the position of the detection plate is lowered, it means that the movable rack has dropped, which means that the tension of the chenille yarn has decreased. At this time, it is necessary to reduce the input speed of the yarn, or increase the output speed; conversely, when the position of the detection plate is raised, it means that the movable rack has risen, which means that the tension of the chenille yarn has increased. At this time, it is necessary to reduce the output speed of the yarn, or increase the input speed. The present invention uses a movable pulley structure to provide a stable pre-tensioning force. No matter how the position of the movable gear changes, the overall pre-tensioning force is fixed. At the same time, with a distance sensor, the input and output speeds of the yarn can be adjusted in real time, fundamentally avoiding the problem of mismatching input and output speeds for a long time.
[0007] Furthermore, a micro switch is provided on the outer wall of the rear side plate and on the lower side of the detection plate, and the micro switch does not affect the detection of the distance sensor. The distance sensor can adjust the input and output speeds of the yarn by monitoring the position of the detection plate. Therefore, during normal operation, the position of the detection plate has an upper limit and a lower limit, and the position of the detection plate will not exceed these two limits, while the position of the micro switch is lower than the lower limit. When the yarn breaks in the present invention, the movable gear loses the tension of the yarn and falls instantly. Although the distance sensor can monitor the falling position of the detection plate and regulate the input and output speeds, this has no effect. During the falling process of the detection plate, it will abut against the micro switch, thereby triggering a wire break alarm, and the production staff can find it at the first time.
[0008] Therefore, compared with the prior art, the present invention has the following characteristics: 1. The present invention utilizes a movable pulley structure to provide a stable pre-tensioning force. No matter how the position of the movable gear changes, the overall pre-tensioning force is fixed; 2. In combination with a distance measuring sensor, the input and output speeds of the yarn can be adjusted in real time, fundamentally avoiding the problem of long-term mismatch in input and output speeds; 3. In the present invention, when the yarn breaks, the movable gear loses the tension of the yarn and will fall instantly. During the falling process, the detection plate will abut against the micro switch, thereby triggering a broken wire alarm. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] AttachedFigure 1 It is a structural schematic diagram of the present invention;
[0010] Attached Figure 2 is a partial exploded view of the present invention;
[0011] Attached Figure 3 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION
[0012] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.
[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0014] Example 1: See Figure 1 , Figure 2 and Figure 3 A yarn tension detection mechanism for a chenille yarn spinning device comprises a mounting seat 10, on which a vertically distributed fixed rack 20 is provided, and a vertical slide rail 30 is also provided, on which a movable rack 40 is slidably provided, and the upper and lower ends of the movable rack are respectively fixedly connected with a slider 41, the slider and the slide rail are slidably matched, a movable gear 50 is meshed between the fixed rack and the movable rack, and a first guard plate 60 and a second guard plate 70 fixed relative to the mounting seat are provided on both sides of the movable gear, and a vertical first slide groove 6 is provided on the first guard plate 1. A vertical second slide groove 71 is provided on the second guard plate, a first movable block 62 coaxially connected to the movable gear is slidably mounted in the first slide groove, a second movable block 72 coaxially connected to the movable gear is slidably mounted in the second slide groove, an extension rod 63 is extended upwardly on the first movable block, a rotating shaft 65 is fixed on the extension rod, and a guide wheel 64 is rotatably provided on the rotating shaft; a detection plate 80 is fixed on the slider located on the upper side, and a distance sensor 90 facing the detection plate is provided on the mounting seat, and the distance sensor is a laser distance sensor.
[0015] The tensioning principle of this embodiment is as follows: when the chenille yarn passes around the wire wheel, the movable rack will tend to slide upward due to its own weight, and its gravity will be converted into a pulling force that pulls the movable gear to roll downward. At the same time, the movable gear itself also tends to roll downward due to its own weight. Therefore, the weight of the movable gear, the movable rack, the first movable block and the second movable block all become part of the pre-tensioning force. When the chenille yarn has a drastic change in yarn tension due to the mismatch between the input and output speeds, the pulling force of the chenille yarn on the wire wheel will change. At this time, the height position of the movable gear will change adaptively to stabilize the tension of the yarn. At the same time, the ranging sensor can monitor the position change of the detection plate in real time. When the position of the detection plate is lowered, it means that the movable rack has dropped, which means that the tension of the chenille yarn has decreased. At this time, it is necessary to reduce the input speed of the yarn, or increase the output speed; conversely, when the position of the detection plate is raised, it means that the movable rack has risen, which means that the tension of the chenille yarn has increased. At this time, it is necessary to reduce the output speed of the yarn, or increase the input speed. This embodiment uses a movable pulley structure to provide a stable pre-tensioning force. No matter how the position of the movable gear changes, the overall pre-tensioning force is fixed. At the same time, with a distance sensor, the input and output speeds of the yarn can be adjusted in real time, fundamentally avoiding the problem of mismatching input and output speeds for a long time.
[0016] See Figure 1 The mounting seat is composed of a horizontal bottom plate 11, a front side plate 12 and a rear side plate 13, the slide rail is arranged on the inner side wall of the rear side plate, and the distance measuring sensor is arranged on the outer side wall of the rear side plate.
[0017] See Figure 2 The movable gear includes a shaft body 51, a counterweight body 52 and a gear body 53 which are coaxially fixed.
[0018] See Figure 1 A micro switch 81 is provided on the outer wall of the rear side plate and on the lower side of the detection plate. The micro switch does not affect the detection of the distance sensor. The distance sensor can adjust the input and output speeds of the yarn by monitoring the position of the detection plate. Therefore, during normal operation, the position of the detection plate has an upper limit and a lower limit. The position of the detection plate will not exceed these two limits, and the position of the micro switch is lower than the lower limit. When the yarn breaks in this embodiment, the movable gear loses the tension of the yarn and falls instantly. Although the distance sensor can monitor the falling position of the detection plate and regulate the input and output speeds, this has no effect. During the falling process of the detection plate, it will abut against the micro switch, thereby triggering a wire break alarm, which the production staff can discover at the first time.
[0019] The present invention can be modified in various ways which are obvious to those skilled in the art, and such modifications are not considered to depart from the scope of the present invention. All such modifications which are obvious to those skilled in the art are intended to be included within the scope of the present claims.
Claims
1. A yarn tension detection mechanism for a chenille yarn spinning device, characterized in that: The invention comprises a mounting seat, on which a vertically distributed fixed rack is provided, and a vertical slide rail is provided, a movable rack is slidably mounted on the slide rail, a movable gear is meshed between the fixed rack and the movable rack, a first guard plate and a second guard plate fixed relative to the mounting seat are provided on both sides of the movable gear, a vertical first slide groove is provided on the first guard plate, a vertical second slide groove is provided on the second guard plate, a first movable block coaxially rotatably connected to the movable gear is slidably mounted in the first slide groove, a second movable block coaxially rotatably connected to the movable gear is slidably mounted in the second slide groove, an extension rod is extended upwardly on the first movable block, and a guide wheel is rotatably mounted on the extension rod; a detection plate is fixed on the movable rack, and a distance measuring sensor facing the detection plate is provided on the mounting seat.
2. The yarn tension detection mechanism of the chenille yarn spinning device according to claim 1, characterized in that: The mounting seat is composed of a horizontal bottom plate, a front side plate and a rear side plate. The slide rail is arranged on the inner side wall of the rear side plate, and the distance measuring sensor is arranged on the outer side wall of the rear side plate.
3. The yarn tension detection mechanism of the chenille yarn spinning device according to claim 1, characterized in that: The movable gear comprises a shaft body, a counterweight body and a gear body which are coaxially fixed.
4. The yarn tension detection mechanism of the chenille yarn spinning device according to claim 1, characterized in that: The upper end and the lower end of the movable rack are respectively fixedly connected with sliding blocks, and the sliding blocks are slidably matched with the slide rails.
5. The yarn tension detection mechanism of the chenille yarn spinning device according to claim 2, characterized in that: The distance measuring sensor is a laser distance measuring sensor.
6. The yarn tension detection mechanism of the chenille yarn spinning device according to claim 2, Features: A micro switch is provided on the outer side wall of the rear side plate and located at the lower side of the detection plate. The micro switch does not affect the detection of the distance measuring sensor.