A fully untwisted yarn untwister

Abstract

This invention relates to a yarn untwisting device for thorough untwisting, comprising a bracket with an untwisting tube and a compressed air circulation structure for untwisting. The upper end of the bracket has a fixing groove, and a yarn feeding plate is mounted on the bracket below the fixing groove. The untwisting tube is located below the yarn feeding plate and is fixedly connected to the bracket. The air circulation structure includes a compressed air guide hole, a vent hole, and an air rectifier hole. The air guide hole is located inside the upper section of the bracket, and the vent hole is located inside the yarn feeding plate. The air rectifier hole is located inside the untwisting tube. This invention employs a special air rectifier hole design, achieving thorough untwisting to meet the requirements for knotting special yarns. The components exhibit high dimensional accuracy and stability. The modular assembly method enhances practicality. The ingenious structure facilitates installation and disassembly. It is durable and has a long service life.

Description

Technical Field

[0001] This invention belongs to the field of textile equipment technology and relates to a yarn untwisting device that fully untwises the yarn. Background Technology

[0002] With the continuous development of spinning technology and the constant iteration of yarn varieties, the quality requirements for yarn splices are becoming increasingly stringent, which in turn increases the requirements for yarn knotting. Since the untwisting device is an auxiliary device at the front end of the yarn knotting machine, it has a significant impact on yarn knotting. However, for some special yarns, ordinary untwisting devices cannot meet the twisting requirements, resulting in insufficient untwisting and easy disconnection of the splice. Therefore, whether the yarn untwisting device can meet the subsequent knotting work of special yarns directly affects the quality of the yarn splice. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, solve the problem of insufficient untwisting of special yarns, and provide a yarn untwisting device that can fully untwist.

[0004] To achieve the above objectives, the following technical solution is adopted: The aforementioned yarn untwisting device includes a support with an untwisting tube and a compressed air circulation structure for untwisting. The upper end of the support has a fixing groove, and a yarn feeding plate is mounted on the support below the fixing groove. The untwisting tube is located below the yarn feeding plate and is fixedly connected to the support. The air circulation structure includes a compressed air guide hole, a vent hole, and an air rectifier hole. The air guide hole is located inside the upper section of the support, and the vent hole is located inside the yarn feeding plate, communicating with the air guide hole. The air rectifier hole is located inside the untwisting tube, below the vent hole. The air rectifier hole is an elongated oval hole, with its cross-sectional centerline A inclined to the radial centerline B of the untwisting tube.

[0005] Preferably, the top surface of the yarn feeding plate is provided with a gradually widening transition structure.

[0006] Preferably, the lower half of the bracket is provided with a slot, and one side of the untwisting tube is provided with a protrusion that can cooperate with the slot. The protrusion is provided with a threaded hole, and the bracket is provided with a countersunk hole that cooperates with the threaded hole. A fixing screw is provided in the countersunk hole, and one end of the fixing screw is screwed into the threaded hole. The untwisting tube is connected to the bracket by the fixing screw.

[0007] Preferably, the vent is an oblong hole.

[0008] Preferably, a fixing plate is provided on one side of the bracket.

[0009] Preferably, the inclination angle between the cross-sectional centerline A of the air rectifier hole and the radial centerline B of the untwisting tube is 20°-30°.

[0010] Preferably, a clearance groove is provided at the transition connection between the convex strip and the untwisting tube.

[0011] Compared with the prior art, the present invention has the following advantages: This invention employs a special air rectifier hole design, ensuring that the flow rate and direction of compressed air change constantly as it passes through, achieving a thorough untwisting effect to meet the requirements for knotting special yarns. Each component utilizes one-sided processing technology to guarantee dimensional accuracy and stability. The modular assembly mode allows for the replacement of different untwisting tube modules for different yarns, broadening its application range and enhancing its practicality. The invention features an ingenious structure, facilitating installation and disassembly; it is also durable and has a long service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the support structure of the present invention.

[0015] Figure 4 This is a top view of the untwisting tube of the present invention.

[0016] In the diagram: 1. Bracket; 2. Untwisting tube; 3. Air guide hole; 4. Air rectifier hole; 5. Fixing screw; 6. Yarn feeding plate; 7. Ventilation hole; 8. Fixing groove; 9. Card slot; 10. Raised strip; 11. Fixing plate; 12. Clearance groove; 13. Threaded hole; 14. Countersunk hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0018] like Figures 1-4As shown, a fully untwisted yarn untwisting device includes a bracket 1 with an untwisting tube 2 and a compressed air circulation structure for untwisting. The upper end of the bracket 1 is provided with a fixing groove 8, and a yarn feeding plate 6 is provided on the bracket 1 below the fixing groove 8. The yarn feeding plate 6 is used to hold the yarn between the untwisting tube 2 and the yarn feeding plate 6. The untwisting tube 2 is provided below the yarn feeding plate 6 and is fixedly connected to the bracket 1. The airflow structure includes a compressed air guide hole 3, a vent hole 7, and an air rectifier hole 4. The air guide hole 3 is located inside the upper section of the support 1 and is connected to a compressed air connector to guide compressed air into the support 1. The vent hole 7 is located inside the yarn feeding plate 6 and is connected to the air guide hole 3. The vent hole 7 allows compressed air to enter from the air guide hole 3 and then blow out from the vent hole 7. The air rectifier hole 4 is located inside the untwisting tube 2 and is below the vent hole 7. Because the compressed air blown out from the vent hole 7 can enter the air rectifier hole 4 downwards, the air rectifier hole 4 is an elongated oval hole, and its cross-sectional centerline A is inclined to the radial centerline B of the untwisting tube 2. After the compressed air enters the air rectifier hole 4, due to its elongated oval shape, the flow velocity and direction of the compressed air in the air rectifier hole 3 will change, resulting in a better untwisting effect.

[0019] Preferably, the top surface of the yarn feeding plate 6 is provided with a gradually widening transition structure, and the area of ​​the left end face of the yarn feeding plate 6 is smaller than the area of ​​its right end face. The gradually widening transition of the yarn feeding plate 6 makes it easier for the yarn to fall between the yarn feeding plate 6 and the untwisting tube 2 when it is placed.

[0020] Preferably, the lower half of the bracket 1 is provided with a groove 9, and one side of the untwisting tube 2 is provided with a protrusion 10 that can cooperate with the groove 9. The protrusion 10 is provided with a threaded hole 13, and the bracket 1 is provided with a countersunk hole 14 that cooperates with the threaded hole 13. A fixing screw 5 is provided in the countersunk hole 14, and one end of the fixing screw 5 is screwed into the threaded hole 13. The untwisting tube 2 is connected to the bracket 1 by the fixing screw 5.

[0021] Preferably, the vent 7 is an oblong hole.

[0022] Preferably, a fixing plate 11 is provided on one side of the bracket 1, and the bracket 1 is reinforced with the equipment by using the fixing plate 11.

[0023] Preferably, the inclination angle between the cross-sectional centerline A of the air rectifier hole 4 and the radial centerline B of the untwisting tube 2 is 20°-30°.

[0024] Preferably, a relief groove 12 is provided at the connection between the convex strip 10 and the untwisting tube 2, which facilitates the cooperation between the strip 10 and the slot 9.

[0025] Working principle: This device is installed at the front end of the yarn splicing equipment. The untwisting tube 2 is fixed to the bracket 1 with a fixing nut. The yarn to be untwisted is placed between the untwisting tube 2 and the yarn feeding plate 6. Compressed air introduced through the air guide hole 3 is led into the air rectifier hole 4 through the vent hole 7. After the compressed air enters the air rectifier hole 4, the flow rate and direction of the compressed air will change during the untwisting process because both the vent hole 3 and the air rectifier hole 4 are in the form of elongated oval holes, which makes the untwisting effect better.

[0026] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A yarn untwisting device for fully untwisting yarn, comprising a bracket (1) with an untwisting tube (2) and a compressed air circulation structure for untwisting, wherein a fixing groove (8) is provided at the upper end of the bracket (1), a yarn feeding plate (6) is provided on the bracket (1) below the fixing groove (8), and the untwisting tube (2) is provided below the yarn feeding plate (6), the untwisting tube (2) being fixedly connected to the bracket (1); the air circulation structure includes a compressed air guide hole (3) and a vent hole (7). The air guide hole (3) is located inside the upper section of the support (1), and the ventilation hole (7) is located inside the yarn feeding plate (6). The ventilation hole (7) is connected to the air guide hole (3). The air guide hole (4) is located inside the untwisting tube (2). The air guide hole (4) is located below the ventilation hole (7). The air guide hole (4) is an oblong hole, and its cross-sectional center line A is inclined to the radial center line B of the untwisting tube (2). The top surface of the yarn feeding plate (6) is provided with a gradually widening transition structure; The lower half of the bracket (1) is provided with a slot (9), and a protrusion (10) that can cooperate with the slot (9) is provided on one side of the untwisting tube (2). A threaded hole (13) is provided on the protrusion (10), and a countersunk hole (14) that cooperates with the threaded hole (13) is provided on the bracket (1). A fixing screw (5) is provided in the countersunk hole (14), and one end of the fixing screw (5) is screwed into the threaded hole (13). The untwisting tube (2) is connected to the bracket (1) by the fixing screw (5). The vent (7) is an oblong hole; The inclination angle between the cross-sectional centerline A of the air rectifier hole (4) and the radial centerline B of the untwisting tube (2) is 20°-30°.

2. A fully untwisted yarn untwister according to claim 1, characterized in that: A fixing plate (11) is provided on one side of the bracket (1).

3. A fully untwisted yarn untwister according to claim 1, characterized in that: A clearance groove (12) is provided at the transition connection between the convex strip (10) and the untwisting tube (2).

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