Rapier loom for weaving jute fibers and control method thereof

Abstract

The application discloses a rapier loom for weaving jute fibers, which comprises a frame, a transverse frame arranged at the front end of a beating mechanism of the frame, a plurality of through holes arranged on the transverse frame, a plurality of twisting wheels arranged in the through holes, and warp threads passing through the twisting wheels; a sensor is arranged on the transverse frame, and a controller connected with the sensor and the twisting wheels respectively is arranged on the frame. The application has the following advantages and effects: the structure of the original rapier loom is changed, the rapier loom suitable for jute fibers is made, and the control method of the rapier loom is disclosed correspondingly, so that the influence of the hairiness on the jute yarn on the fabric can be accurately avoided.

Description

Technical Field

[0001] This invention relates to the field of rapier loom technology, and particularly to a rapier loom for weaving jute fiber and its control method. Background Technology

[0002] Jute fiber is one of the cheapest natural fibers, second only to cotton in terms of cultivation and wide range of uses. Like kenaf, hemp, flax, and ramie, it belongs to the bast fiber family (fiber extracted from the inner or outer bast layer of a plant). Known as the "golden fiber," jute has become one of the world's most economically valuable and versatile fibers. It can be used to develop various forms of fiber products, plays an important role in the textile and nonwoven industries, and is biodegradable.

[0003] Jute fiber has a high lignin content and is coarse and stiff. During the spinning process, the ends of the fibers tend to curl up in the yarn, resulting in a lot of outward-extending fuzz in the jute yarn, with the longest fuzz reaching 0.5 cm. Jute yarn with a lot of fuzz can easily affect the quality of the fabric and reduce weaving efficiency when woven on a rapier loom. Summary of the Invention

[0004] The purpose of this invention is to provide a rapier loom and its control method for reducing jute fiber breakage or mis-weaving.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a rapier loom for weaving jute fiber, comprising a frame, a transverse frame located at the front end of the weft insertion mechanism on the frame, a plurality of perforations on the transverse frame, a plurality of torsion wheels arranged in each perforation, and warp threads passing through the torsion wheels; a sensor is provided on the transverse frame, and a controller is provided on the frame that is connected to the sensor and the torsion wheels respectively.

[0006] The transverse frame is further configured to include two sets, front and rear, with two torsion wheels in the front set and three torsion wheels in the rear set.

[0007] Further configuration: at least two torsion wheels, and a micro motor corresponding to each torsion wheel is provided in the transverse frame, with the controller controlling the micro motor to operate.

[0008] The configuration is further defined as follows: multiple vertical rails are provided on the horizontal frame, sliding seats are provided on the vertical rails, and through holes are provided on the sliding seats; multiple cylinders are provided on the horizontal frame, and the cylinders are fixed vertically upward below the sliding seats.

[0009] The present invention also discloses a control method for the rapier loom used for weaving jute fibers, including... S1: Calculate the position of the hairs on the warp based on the sensor signal; S2: After a set time, the controller drives the previous set of micro motors to rotate, causing the torsion wheel to blend the feathers into the warp threads; S3: After a set time, the controller drives the next set of micro motors to operate, causing the entire warp to twist; S4: The rotation direction of the latter set of torsion wheels is divided by the horizontal and vertical directions, and the torsion wheels rotate in the corresponding directions.

[0010] The setting is further configured such that in S4, when the next feather crosses the vertical line with the previous feather and the twist angle is less than 30 degrees, the torsion wheel rotates further.

[0011] Further settings include: In S4, when the overall twist angle of the warp is greater than 180 degrees, the next feather will be adjusted to twist in the opposite direction.

[0012] In summary, the present invention has the following beneficial effects: by changing the structure of the original rapier loom, a rapier loom suitable for jute fiber has been made, and the control method of the rapier loom has been disclosed accordingly, thereby accurately avoiding the influence of jute yarn hairs on the fabric. Attached Figure Description

[0013] Figure 1 A schematic diagram of the improved part of the rapier loom; Figure 2 This is a schematic diagram of a sliding seat with three torsion wheels.

[0014] In the diagram: 1. Frame; 2. Weft insertion mechanism; 3. Horizontal frame; 4. Perforation; 5. Torsion wheel; 6. Sensor; 7. Controller; 8. Micro motor; 9. Vertical track; 10. Sliding seat; 11. Cylinder. Detailed Implementation

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

[0016] A rapier loom for weaving jute fiber includes a frame 1, on which a weft-beating mechanism 2 is mounted. Two transverse frames 3 are located at the front end of the weft-beating mechanism 2 on the frame 1. Multiple vertical rails 9 are mounted on the transverse frames 3, and sliding seats 10 are mounted on the vertical rails 9. Multiple cylinders 11 are mounted on the transverse frames 3, and the cylinders 11 are vertically fixed below the sliding seats 10. Adjacent cylinders 11 are in opposite states; that is, when one cylinder 11 is extended, the adjacent cylinder 11 is retracted, thus creating an opening between the upper and lower warp threads.

[0017] Each sliding seat 10 has several through holes 4, and each through hole 4 contains a micro motor 8, with a torsion wheel 5 mounted on each micro motor 8. The front transverse frame 3 contains two torsion wheels 5, and the rear transverse frame 3 contains three torsion wheels 5. The warp thread passes through the front and rear transverse frames 3 and abuts against the torsion wheels 5.

[0018] A sensor 6 is installed on the transverse frame 3. The sensor 6 is used to detect the hairs on the warp and record their position and angle. A controller 7 is installed on the frame 1. One end of the controller 7 receives the signal from the sensor 6, and the other end is connected to the micro motor 8. After receiving the signal from the sensor 6, the controller 7 performs calculations and drives the micro motor 8, thereby controlling the operation of the torsion wheel 5.

[0019] Another aspect of the present invention discloses a control method for a rapier loom used for weaving jute fibers, comprising the following steps: S1: Based on the sensing signal (hair position and angle) from sensor 6, controller 7 calculates the position of the hair on the warp. S2: The controller 7 drives the previous set of micro motors 8 to operate after a set time according to the speed of the warp, causing the torsion wheel 5 to rotate, which mixes the hairs into the warp and reduces the amount of hairs protruding. S3: The controller 7 drives the next set of micro motors 8 to move according to the travel speed of the warp, causing the entire warp to twist; S4: The rotation direction of the second set of torsion wheels 5 is divided by the horizontal and vertical directions. Torsion wheels 5 rotate in the corresponding directions; that is, when the feathers are located on the upper left side, torsion wheel 5 rotates the warp threads counterclockwise, causing the blended feathers to be ultimately held laterally between the two warp threads. When the feathers are located on the lower left side, torsion wheel 5 rotates clockwise, causing the blended feathers to be ultimately held laterally between the two warp threads. The same applies to the right side.

[0020] Specifically, when the next feather crosses the vertical line with the previous feather and the twist angle is less than 30 degrees, the twist wheel 5 rotates further, that is, it continues to rotate in the original direction. When the overall twist angle of the warp is greater than 180 degrees, the position of the next feather is adjusted by twisting in the opposite direction.

[0021] The twisting adjustment of the warp has a delay, that is, there is a certain distance between the detected position of the hair on the warp and the actual position of the warp at the weft insertion point. The twisting of the twisting wheel 5 has a delay, and the position of the hair on the warp at the actual weft insertion point is taken as the standard.

[0022] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A rapier loom for weaving jute fiber, comprising a frame and a weft-beating mechanism mounted on the frame, characterized in that: The frame has a transverse frame at the front end of the weft insertion mechanism. The transverse frame has several through holes, each containing several torsion wheels through which the warp threads pass. A sensor is installed on the transverse frame, and a controller is installed on the frame to connect the sensor and the torsion wheels. The transverse frame consists of two sets, front and rear. The front set has two torsion wheels, and the rear set has three torsion wheels. A micro motor is installed inside the transverse frame corresponding to the torsion wheels, and the controller controls the operation of the micro motor. The control method of the controller includes: S1: Calculate the position of the hairs on the warp based on the sensor signal; S2: After a set time, the controller drives the previous set of micro motors to rotate, causing the torsion wheel to blend the feathers into the warp threads; S3: After a set time, the controller drives the next set of micro motors to operate, causing the entire warp to twist; S4: The rotation direction of the second set of torsion wheels is divided into horizontal and vertical directions, with the torsion wheels rotating in the corresponding directions.

2. The rapier loom for weaving jute fiber according to claim 1, characterized in that: The horizontal frame is equipped with multiple vertical rails, and sliding seats are installed on the vertical rails. Through holes are provided on the sliding seats. Multiple cylinders are installed on the horizontal frame, and the cylinders are fixed vertically upward below the sliding seats.

3. The rapier loom for weaving jute fiber according to claim 1, characterized in that: In S4, when the next feather crosses the vertical line with the previous feather and the twist angle is less than 30 degrees, the torsion wheel rotates further.

4. The rapier loom for weaving jute fiber according to claim 1, characterized in that: In S4, when the overall twist angle of the warp is greater than 180 degrees, the next feather will twist in the opposite direction to adjust.

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