Sheet tension control device and method for sectional warping machine

Abstract

Disclosed in the present invention are a sheet tension control device and method for a sectional warping machine. The sheet tension control device comprises a warping machine body and a creel, wherein the creel is located on one side of the warping machine body. The device is characterized in that a warping creel is provided in the creel, and a sheet tension controller and a lease rack are provided between the creel and the warping machine body; and the sheet tension controller comprises a column, a front yarn guide device, an angle scale, friction rollers, a tension monitor, an angle electric motor, an angle shaft and a tension self-adjusting controller. The column is located between the creel and the lease rack, and the front yarn guide device is mounted on one side of the column that is close to the creel; the angle scale is mounted on the column, and two friction rollers are mounted on one side of the angle scale; the angle electric motor is fixed to the column, and the angle scale is connected to the angle electric motor by means of the angle shaft; the tension monitor is mounted between the two friction rollers; the tension self-adjusting controller is placed on the top of the column, and by comparing a signal fed back by the tension monitor with a set value, the controller adjusts the tension on the angle scale and the friction rollers, such that the tension between various yarn sheets can be effectively controlled to be nearly consistent; and the tension on the yarn sheets can be improved depending on different products, the total tension of sections is improved, and the overall winding tension of the warping machine is improved so as to adapt to the warping of high-strength high-modulus low-stretch products.

Description

A slitting tension control device and method for a sectional warping machine Technical Field

[0001] The present invention relates to the technical field of warping machines, and in particular to a slitting tension control device and method for a slitting warping machine. Background Art

[0002] Existing solutions: Existing technologies generally use single-spindle tension control to achieve stable tension in the sheet strips. In fact, consistent single-spindle tension control can only achieve stable tension in the warping frame. For example, after using an intelligent tensioner to set the tension of each single spindle to be constant, it only reflects the consistent tension of each silk thread in the section between the single-spindle tensioner of the warping frame and the end-break automatic stop device of the warping frame; the tension in the section from the warping frame to the warping table is unevenly superimposed due to the additional friction of the yarn corners and the wire guide holes, resulting in errors in the obtained segment tension on the warping table.

[0003] The current method is to add a central tensioner between the warping frame and the warping table to compensate for this. However, since hundreds of silk threads are leveled at the same time, it cannot effectively solve the problem of inconsistent tension between the upper and lower layers of yarn due to different yarn guide angles and yarn guide hole guide angles. The present invention controls the tension detection and leveling stabilization devices at different levels, so that the yarn coming out of the tension frame is layered (sliced) to control the stability of the tension, ensuring the consistency of the tension between each layer (sheet). This is more effective to ensure the uniformity of the entire (belt) of silk thread on the warping table. The slice tension control device is used to add or reduce the tension of each layer of yarn to achieve the consistency of the tension of each layer of yarn, improve the stability of the warping winding tension, and especially for some special varieties, the tension change can be set according to the changes in the inner and outer layers of the winding to achieve the effect of tight inside and loose outside.

[0004] The main drawbacks are:

[0005] 1. The existing multi-roller center tension controller controls all warp yarns drawn from the creel together. The uniformity of tension between each warp yarn is mainly achieved by a single-spindle tensioner. In fact, due to the influence of the front-to-back distance and the vertical angle, there is an error in the tension between the automatic stop tensioner and the center tensioner. This error is not obvious on yarn tows with relatively high elongation, but there will be a significant tension difference on yarn tows made of high-strength and low-elongation materials. The yarn's own tensile elongation cannot fully adapt to the tension and provide compensation, resulting in inconsistent lengths between individual warp yarns across the entire warp beam width. This makes it impossible to obtain high-quality weaving products, and both flatness and tightness will be affected.

[0006] 2. The existing flying wing double-row center tension controller, although it uses left and right warp frames for separate guidance, does not have separate control for each layer and automatic tension adjustment measures, and cannot achieve high-precision uniform tension targets.

[0007] 3. The existing technology does not differentiate between the tension differences of the yarn sheets on the upper and lower layers of the warping frame to ensure that the tension between each layer of yarn sheet is constant and consistent. Technical issues

[0008] In view of the deficiencies in the prior art, the present invention provides a slitting tension control device and method for a slitting warping machine. Technical Solutions

[0009] For the above purposes, the above technical purposes of the present invention are achieved through the following technical solutions: a slicing tension control device and method for a slicing warping machine, comprising a warping machine main body and a warping yarn frame, the warping yarn frame is located at the rear side of the warping machine main body, a creel frame is provided in the warping yarn outlet frame, a slicing tension control device is provided between the warping yarn frame and the warping machine main body, the slicing tension control device comprises a front yarn guide device, an angle disk, a friction roller, a tension monitor, a column, an angle motor, an angle shaft and a tension self-adjusting controller, the front yarn guide device is arranged between the end break automatic stop device of the warping yarn frame and the angle disk, the column is located between the warping yarn frame and the slitting frame, the two friction rollers are connected to one side of the angle disk, the tension monitor and the angle disk are connected between the friction rollers, the angle shaft is driven by the angle motor, the angle motor is connected to one side of the column, the angle disk is connected to the angle shaft, and the tension self-adjuster is connected to the top of the column.

[0010] Preferably, the tension self-adjusting controller includes a friction roller shaft, an outer rotor electromagnetic motor and a friction roller shell, the friction roller shaft is driven by the outer rotor electromagnetic motor, the friction roller shell is wrapped around the outside of the friction roller shaft, and the friction roller shell is electrically connected to the outer rotor electromagnetic motor.

[0011] Preferably, the tension monitor includes a tension bearing seat, a pressure sensor and a tension monitoring roller, the tension bearing seat is fixedly connected to the angle disk, the tension monitoring roller is connected to the tension bearing seat through the pressure sensor, and the tension detection roller is electrically connected to the angle motor.

[0012] Preferably, the front yarn guide includes a baffle and a yarn guide hole, the baffle is fixedly connected to one side of the creel, the yarn guide is horizontally passed through the baffle surface, and the outer rotor electromagnetic motor is fixedly connected to the outer side of the baffle.

[0013] Preferably, the warping machine body also includes a wire collecting plate, a roller, a weaving shaft and a bracket, the wire collecting plate and the bracket are fixedly connected between the bobbin rack and the roller, the weaving shaft and the bracket are connected to the side of the roller away from the wire collecting plate, and the roller and the bracket are slidably connected.

[0014] Preferably, a ground rail is provided at the bottom of the drum, and the drum is slidably connected to the bracket via the ground rail.

[0015] Preferably, the sheet tension controller is fixedly connected to the creel at a side of the creel close to the warping machine body.

[0016] Preferably, the sheet tension controller and the bracket are fixedly connected to the side of the wire collecting plate close to the creel.

[0017] Preferably, the sheet tension controller and the bracket are fixedly connected to the middle between the wire collecting plate and the creel. Beneficial effects

[0018] The present invention provides a device and method for controlling the tension of a sectional warping machine. It has the following beneficial effects:

[0019] 1. This replaces the existing central tension controller, effectively controlling the tension of each layer of yarn to be nearly uniform. It can also increase the yarn tension based on the product, thereby increasing the total tension of the slitting and the overall winding tension of the warping machine. This is suitable for warping high-strength, high-modulus, low-elongation products, including but not limited to carbon fiber, glass fiber, para-aramid, and liquid crystal polyarylate. The uniformity of the yarn tension in each layer can be achieved using the existing single-spindle tension controller, which ensures stable tension between the warp yarn and the automatic stop device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view of an embodiment of the invention;

[0021] Figure 2 is an enlarged view of area A in Figure 1 of the invention;

[0022] Figure 3: A cross-sectional view of the slicing tension self-adjusting control device;

[0023] Figure 4: Schematic diagram of the tension monitor;

[0024] Figure 5: Schematic diagram of the installation of the slice tension controller;

[0025] Figure 6: Schematic diagram of the installation of the slice tension controller;

[0026] Figure 7: Schematic diagram of the slicing tension controller installation.

[0027] Figure numerals: 1. bobbin rack; 201. front yarn guide device; 202. angle disk; 203. friction roller; 204. tension monitor; 205. column; 206. angle motor; 207. angle shaft; 208. tension self-adjusting controller; 221. friction roller shaft; 222. outer rotor electromagnetic motor; 223. friction roller housing; 211. tension bearing seat; 212. pressure sensor; 213. tension monitoring roller; 16. baffle; 17. yarn guide hole; 18. wire collecting plate; 19. drum; 20. weaving shaft; 22. ground rail. Best Mode for Carrying Out the Invention

[0028] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions based on the principles of the present invention should be within the scope of protection of the present invention. It should also be noted that improvements and modifications that do not depart from the principles of the present invention, which are within the scope of protection of the present invention, are within the scope of protection of the present invention.

[0029] As shown in the figure, a slitting tension control device and method for a slitting warping machine includes a warping machine body and a wire-out structure. The wire-out structure is located on one side of the warping machine body, and a creel 1 is provided in the wire-out structure.

[0030] A sheet tension controller is provided between the creel 1 and the warping machine body. The sheet tension controller includes a front yarn guide device 201, an angle disk 202, a friction roller 203, a tension monitor 204, a column 205, an angle motor 206, an angle shaft 207 and a tension self-adjusting controller 208. The front yarn guide device 201 is connected to the creel 1, and the column 205 is located between the creel 1 and the warping machine body. The two friction rollers 203 are connected to one side of the angle disk 202. The tension monitor 204 and the angle disk 202 are connected between the friction rollers 203. The angle shaft 207 is driven by the angle motor 206. The angle motor 206 is connected to one side of the column 205. The angle disk 202 is connected to the angle shaft 207. The tension self-adjusting controller is connected to the top of the column 205.

[0031] The tension self-adjusting controller 208 includes a friction roller shaft 221, an outer rotor electromagnetic motor 222 and a friction roller shell 223. The friction roller shaft 221 is driven by the outer rotor electromagnetic motor 222. The friction roller shell 223 is wrapped around the outside of the friction roller shaft 221 and is electrically connected to the outer rotor electromagnetic motor 222.

[0032] The tension monitor 204 includes a tension bearing seat 211, a pressure sensor 212 and a tension monitoring roller 213. The tension bearing seat 211 is fixedly connected to the angle plate 202, the tension monitoring roller 213 is connected to the tension bearing seat 211 through the pressure sensor 212, and the tension detection roller is electrically connected to the angle motor 206.

[0033] The front yarn guide includes a baffle 16 and a yarn guide hole 17 . The baffle 16 is fixedly connected to one side of the creel 1 . The yarn guide hole 17 is horizontally penetrated through the surface of the baffle 16 . The outer rotor electromagnetic motor 222 is fixedly connected to the outer side of the baffle 16 .

[0034] The warping machine body also includes a wire collecting plate 18, a drum 19, a weaving beam 20 and a bracket. The wire collecting plate 18 and the bracket are fixedly connected between the creel 1 and the drum 19. The weaving beam 20 and the bracket are connected to the side of the drum 19 away from the wire collecting plate 18. The drum 19 is slidably connected to the bracket. A ground rail 22 is provided at the bottom of the drum 19, and the drum 19 is slidably connected to the bracket through the ground rail 22.

[0035] The sliver tension controller is fixedly connected to the creel 1 on the side of the creel 1 close to the warping machine body. Alternatively, the sliver tension controller is fixedly connected to the bracket on the side of the wire collecting plate 18 close to the creel 1. Alternatively, the sliver tension controller is fixedly connected to the bracket in the middle between the wire collecting plate 18 and the creel 1.

[0036] Working Principle: The yarn emerges from the creel 1 within the yarn delivery mechanism. The yarn passes through the yarn guide hole 17, then passes through the friction roller housing 223, the friction roller 203, the tension detection roller, the friction roller 203, the yarn collecting plate 18, the drum 19, and the weaving beam 20 to complete the warping process. During the warping process, if tension adjustment is required, the angle motor 206 rotates the angle disc 202, which in turn rotates the friction roller 203 to adjust the tension. The outer rotor electromagnetic motor 222 attracts the yarn to the surface of the friction roller housing 223 to prevent it from falling during the warping process. The tension monitoring roller 213 in the tension monitor 204 monitors the tension between the two friction rollers 203 and controls the angle motor 206 via the pressure sensor 212.

[0037] In summary, replacing the existing central tension controller can effectively control the tension between each layer of yarn to be close to uniform. It can also increase the yarn tension according to different products, thereby increasing the total tension of the slitting and the overall winding tension of the warping machine to accommodate the warping of high-strength, high-modulus, low-elongation products, including but not limited to carbon fiber, glass fiber, para-aramid, liquid crystal polyarylate, etc. The uniformity of the yarn tension in each layer can be achieved by the existing single-spindle tension controller, which ensures stable tension between the warp yarn and the automatic stop device.

Claims

1. A slitting tension control device and method for a slitting warping machine, comprising a warping machine body (2) and a warping creel (100), wherein the warping creel is located at the rear side of the warping machine body (2), and characterized in that: A creel (101) is provided in the yarn frame, and a sheet tension control device (200) and a sling frame (300) are provided between the creel (101) and the warping machine body; the sheet tension control device comprises a front yarn guide device (205), an angle disc (202), a friction roller (203), a tension monitor (204), a column (201), an angle motor (206), an angle shaft (207) and a tension self-adjusting controller (208); the front yarn guide device is installed on one side of the column to receive the yarn from the creel and guide and separate it; the column (201) is located between the creel (1) and the warping machine sling frame (18); the angle disc (202) is installed on the column; two friction rollers (203) are installed on the column; The wiping roller (203) is connected to one side of the angle disc (202); the inner part of the friction roller is connected to an outer rotor electromagnetic motor (222) connected to a friction roller shell (223) through a core shaft (221); the angle disc motor (206) is installed on the other side of the column; the angle disc (202) is connected to the angle motor (206) through an angle shaft (207); the tension monitor (204) is connected to the angle disc (202) and installed between the two friction rollers (203); the angle shaft (207) is driven by the angle motor (206); the tension self-adjusting controller (208) is installed on the top of the column (205), and the tension of the angle disc and the friction roller is adjusted by comparing the signal fed back by the tension monitor with the set value.

2. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The slice tension control device comprises a friction roller shaft (221), an outer rotor electromagnetic motor (222) and a friction roller shell (223); the friction roller shell (223) is driven by the outer rotor electromagnetic motor (222); one section of the friction roller core shaft (221) is connected to the stator of the outer rotor electromagnetic motor (222), and another section is installed on the outside of the angle plate (202); the friction roller shell (223) is connected to the rotor of the outer rotor electromagnetic motor (222), and the outer rotor electromagnetic motor (222) is electrically connected to the tension self-adjusting controller (208).

3. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The tension monitor (204) comprises a tension bearing seat (211), a pressure sensor (212) and a tension monitoring roller (213); the tension bearing seat (211) is fixedly connected to the angle plate (202), the tension monitoring roller (213) is connected to the tension bearing seat (211) via the pressure sensor (212), and the pressure sensor is electrically connected to the tension self-adjusting controller (208).

4. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The front yarn guide (205) can be made of a steel reed or a strip-shaped spaced combination; one side of the front yarn guide (205) is fixedly connected to the column (201); the front yarn guide (205) is vertically parallel to the column, and the width direction is horizontally parallel to the friction roller (203); the sheet yarn bundle extended from the yarn rack (100) is guided to the friction roller (203) with a suitable width, and the friction force generated by the rotation speed and angle of the friction roller generates additional friction force on the sheet yarn, thereby stabilizing the tension uniformity of each layer of the sheet yarn.

5. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The tension automatic controller (208) can be controlled by a PLC program or a microcomputer; the control signal is collected from the tension monitor (204) on the angle disk (202) of each layer of yarn and fed back to the controller (208) through an electric signal; the electric signal of the tension monitor (204) is derived from a pressure sensor (212); the signal of the pressure sensor (212) is the pressure generated by the yarn tension on the tension detection roller (213), and the pressure sensing sheet on the pressure sensor (212) outputs electrical feedback to the tension automatic controller (208).

6. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The automatic tension controller (208) obtains an electrical signal from a pressure sensor, and outputs the electrical signal to the angle plate (202) and the friction roller (203) through automatic comparison and calculation; the electrical signal output by the automatic tension controller (208) determines the increase or decrease of the amount of friction force applied according to the tension compensation magnitude; when the error between the actual measured tension and the standard tension is small, the tension is compensated by adjusting the direction and rotation speed of the friction roller (203); when the error between the actual measured tension and the standard tension is large, the compensation is performed by coordinating the rotation speed and direction of the friction roller (203) with the direction of the angle plate (202).

7. A slitting tension control device and method for a slitting warping machine according to claim 1, characterized in that: The slicing tension control device (200) is installed between the warping yarn frame (100) and the sling frame (300); the slicing tension control device (200) can be installed close to the end-break automatic stop device (102) of the warping yarn frame (100), or can be installed between the end-break automatic stop device (102) and the sling frame (300), and a central tensioner can be installed between the slicing tension control device (200) and the sling frame (300) to further even out the tension and increase the additional tension.

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