Unwinding spool for yarns

Abstract

The utility model discloses a yarn backing-off spool, which relates to the technical field of yarn backing-off spools and comprises an outer casing, a moving groove is arranged on the surface of the outer casing, a lead frame is clamped in the moving groove, a sliding groove is arranged on one side of the outer casing close to the moving groove, and a ball extending into the sliding groove is arranged on one side of the lead frame close to the sliding groove. A pressing plate is arranged on the inner wall of the outer cover shell, sealing plates are arranged at the two ends of the outer cover shell, a rotating shaft is arranged at the center of each sealing plate and extends to the inner side of the outer cover shell, and the surface of each rotating shaft is covered with a rubber ring. When the vibration of the yarn is transmitted to the contact position of the yarn and the yarn leading frame, the vibration is blocked and cannot be transmitted backwards continuously, the vibration is prevented from being amplified continuously, the pressing plate on the inner wall of the outer cover shell abuts against the yarn wound on the surface of the yarn drum under the action of elasticity, certain resistance is provided for the rotating yarn drum, and the situation that the yarn drum rotates due to inertia is avoided.

Description

Technical Field

[0001] This utility model relates to the field of yarn unwinding bobbin technology, and in particular to a yarn unwinding bobbin. Background Technology

[0002] When yarn is unwound from the yarn bobbin, the tension on the yarn is very high, the yarns are quite entangled, and some yarns overlap. The overlapping yarns may generate greater resistance during the unwinding process.

[0003] The existing unwinding method involves inserting the yarn bobbin into the outside of a smooth cylindrical structure and using tension to pull the yarn away from the bobbin. During this process, the bobbin rotates at high speed, and due to the resistance of the yarn itself, the yarn vibrates during the movement. This vibration is transmitted to the bobbin, causing the entire structure to vibrate along with the outside of the cylindrical rod. This vibration may cause the bobbin to fall out of its placement position. Furthermore, if intermittent processing or machine stoppage occurs, the rotating bobbin will continue to rotate partially due to inertia, causing the yarn wrapped around the bobbin to loosen. Loose yarn may hinder subsequent unwinding and may even cause the yarn to tear and break. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to solve the problem that existing technologies have the following characteristics: the yarn will produce irregular shaking during the movement process, which will directly affect the stability of the yarn bobbin. When intermittent processing or when the machine is stopped, the rotating yarn bobbin will still rotate partially under the action of inertia, which will cause the yarn wrapped around the outside of the yarn bobbin to become loose and affect subsequent use.

[0005] To solve the problems of the prior art, the technical solution of this utility model is as follows: it includes an outer shell, the surface of which is provided with a movable groove, a lead wire frame is engaged inside the movable groove, a sliding groove is symmetrically arranged on the side of the outer shell near the movable groove, a ball bearing extending into the sliding groove is arranged on the side of the lead wire frame near the sliding groove, a pressure plate is provided on the inner wall of the outer shell, a sealing plate is provided at both ends of the outer shell, a rotating shaft is provided at the center of the sealing plate, the rotating shaft extends into the inner side of the outer shell, and a rubber ring is covered on the surface of the rotating shaft.

[0006] Furthermore, the outer casing is an integral cylindrical tubular structure, and the surface moving groove is a rectangular groove formed along the axial direction of the outer casing.

[0007] Furthermore, the lead frame is an arc-shaped plate structure with an H-shaped cross-section, with its left and right sides of the H-shape located on the inner and outer sides of the outer casing, respectively, and the central horizontal portion traversing the moving groove.

[0008] Furthermore, the horizontal center portion of the lead frame has a through hole that penetrates the lead frame. The edge of the through hole has a smooth chamfer, and the inner wall of the through hole is smooth and flat, ensuring that the yarn can pass through the outer cover of the lead frame, and the through hole restricts the range of movement of the yarn.

[0009] Furthermore, the inner wall and outer surface of the outer casing are provided with symmetrical sliding grooves on both sides of the moving groove to ensure smooth movement of the lead frame.

[0010] Furthermore, the pressure plate is a smooth and flat arc-shaped plate structure made of elastic steel. There are three pressure plates, which are evenly distributed in a ring on the inner wall of the outer casing, so that the pressure plate has sufficient elasticity.

[0011] Furthermore, the diameter of the rubber ring is adapted to the yarn bobbin, and the rubber ring is made entirely of flexible, high-friction rubber with several protrusions distributed in a ring on its surface. The sealing plate position can be fixed by an interference fit between the rubber ring and the yarn bobbin, and the connection can be kept stable.

[0012] Furthermore, the rotating shaft penetrates the sealing plate, connecting the inside and outside of the outer casing, ensuring that the interior of the overall structure has a tube perforation adapted to the yarn bobbin for placing the overall structure.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] This invention covers the yarn bobbin with an outer casing and uses an interference fit with a rubber ring on the outer side of the rotating shaft on the sealing plate surface to enclose the yarn bobbin inside the overall structure. The yarn wound on the surface of the yarn bobbin leaves the outer casing through a guide frame, preventing the guide wire from deviating along the winding direction and vibrating during movement. During the deviation, the yarn pushes the guide frame to move in the groove, and the yarn contacts the guide frame during movement. The vibration amplitude of the yarn leaving the yarn bobbin and vibrating is limited by the contact with the guide frame, thereby reducing the vibration amplitude of the yarn. In addition, the pressure plate on the inner wall of the outer casing abuts against the yarn wound on the surface of the yarn bobbin under the action of elasticity, providing a certain resistance to the rotating yarn bobbin and preventing the yarn bobbin from rotating due to inertia. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the sealing plate of this utility model.

[0018] Figure 4 This is a cross-sectional view of the lead frame of this utility model.

[0019] Reference numerals in the attached diagram: 1. Outer casing; 2. Moving groove; 3. Lead frame; 4. Slide groove; 5. Ball bearing; 6. Pressure plate; 7. Sealing plate; 8. Rotating shaft; 9. Rubber ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figure 1-4 As shown, a yarn unwinding bobbin includes an outer shell 1. The outer shell 1 has a movable groove 2 on its surface. The outer shell 1 is a cylindrical tubular structure. The movable groove 2 is a rectangular groove on the surface along the axial direction of the outer shell 1. A lead wire frame 3 is engaged inside the movable groove 2. The lead wire frame 3 is an arc-shaped plate structure with an H-shaped cross-section. Its left and right sides are located on the inner and outer sides of the outer shell 1, respectively. The central horizontal part passes through the movable groove 2. The central horizontal part of the lead wire frame 3 has a through hole that passes through the lead wire frame 3. The edge of the through hole is provided with a smooth chamfer, and the inner wall of the through hole is smooth and flat, ensuring that the yarn can pass through the outer shell 1 of the lead wire frame 3. The through hole will limit the movement range of the yarn.

[0022] The outer casing 1 is symmetrically provided with a sliding groove 4 on the side near the moving groove 2. The inner wall and outer surface of the outer casing 1 are provided with sliding grooves 4 symmetrically located on both sides of the moving groove 2 to ensure smooth movement of the lead frame 3. The lead frame 3 is provided with a ball bearing 5 extending into the sliding groove 4 on the side near the sliding groove 4. The inner wall of the outer casing 1 is provided with a pressure plate 6. The pressure plate 6 is a smooth and flat arc-shaped plate structure made of elastic steel. There are three pressure plates 6 in total. The three pressure plates 6 are evenly distributed in a ring on the inner wall of the outer casing 1 to give the pressure plate 6 sufficient elasticity. The two ends of the outer casing 1 are provided with sealing plates 7. The center of the sealing plate 7 is provided with a rotating shaft 8. The rotating shaft 8 passes through the sealing plate 7 and connects the inside and outside of the outer casing 1 to ensure that the overall structure has a tube perforation that is compatible with the yarn bobbin for placing the overall structure.

[0023] The rotating shaft 8 extends to the inner side of the outer casing 1. The surface of the rotating shaft 8 is covered with a rubber ring 9. The diameter of the rubber ring 9 is adapted to the yarn tube, and the rubber ring 9 is made of flexible high-friction rubber. Several protrusions are distributed in a ring on the surface. The position of the sealing plate 7 can be fixed by the interference fit between the rubber ring 9 and the yarn tube, and the connection is stable.

[0024] Working principle description: When using this utility model, firstly, the yarn bobbin with yarn wound on its surface is inserted into the outside of the rubber ring 9 of the rotating shaft 8 on the surface of the sealing plate 7. The yarn bobbin is placed stably by the interference fit between the protrusion on the surface of the rubber ring 9 and the yarn bobbin. Then, the outer cover 1 is put on the outside of the yarn bobbin and is snapped into the sealing plate 7. Then, the end of the yarn on the surface of the yarn bobbin is guided through the lead wire frame 3 and connected to the subsequent equipment. Finally, the other sealing plate 7 is snapped into the outer cover 1 while keeping the rotating shaft 8 inside the yarn bobbin. At this time, the sealing plates 7 on both sides are kept in the snapped state with the outer cover 1 and rotatedly connected to the yarn bobbin. The pressure plate 6 on the inner wall of the outer cover 1 abuts against the yarn on the surface of the yarn bobbin.

[0025] Subsequently, the yarn is pulled outward along the guide frame 3. During the pulling process, the yarn moves along the winding trajectory and vibrates during the movement. As the yarn moves, it pushes the guide frame 3 in the horizontal direction. The guide frame 3 moves inside the moving groove 2, following the movement trajectory of the yarn and always maintaining contact with the yarn. When the vibration of the yarn is transmitted to the contact position between the yarn and the guide frame 3, it is blocked and cannot continue to be transmitted backward, thus preventing the vibration from being amplified further.

[0026] Furthermore, the pressure plate 6 on the inner wall of the outer casing 1 always remains in contact with the yarn bobbin due to its own elasticity, so that there is a certain resistance when the yarn bobbin rotates. This resistance can prevent the yarn bobbin from continuing to rotate under the action of inertia.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn unwinding bobbin, comprising an outer casing (1), characterized in that: The outer casing (1) has a movable groove (2) on its surface. A lead wire frame (3) is engaged inside the movable groove (2). A sliding groove (4) is symmetrically arranged on the side of the outer casing (1) near the movable groove (2). A ball bearing (5) extending into the sliding groove (4) is arranged on the side of the lead wire frame (3) near the sliding groove (4). A pressure plate (6) is arranged on the inner wall of the outer casing (1). A sealing plate (7) is arranged at both ends of the outer casing (1). A rotating shaft (8) is arranged at the center of the sealing plate (7). The rotating shaft (8) extends into the inner side of the outer casing (1). A rubber ring (9) covers the surface of the rotating shaft (8).

2. The yarn unwinding bobbin according to claim 1, characterized in that: The outer shell (1) is a cylindrical tubular structure, and the surface moving groove (2) is a rectangular groove with a surface opened along the axial direction of the outer shell (1).

3. The yarn unwinding bobbin according to claim 1, characterized in that: The lead frame (3) is an arc-shaped plate structure with an H-shaped cross-section. Its left and right sides are located inside and outside the outer casing (1), respectively, and the central horizontal part crosses the moving groove (2).

4. The yarn unwinding bobbin according to claim 3, characterized in that: The horizontal center portion of the lead frame (3) has a through hole that penetrates the lead frame (3), the edge of the through hole has a smooth chamfer, and the inner wall of the through hole is smooth and flat.

5. The yarn unwinding bobbin according to claim 1, characterized in that: The inner wall and outer surface of the outer casing (1) are provided with sliding grooves (4) symmetrically located on both sides of the moving groove (2).

6. The yarn unwinding bobbin according to claim 1, characterized in that: The pressure plate (6) is a smooth and flat arc-shaped plate structure made of elastic steel. There are three pressure plates (6), which are evenly distributed in a ring on the inner wall of the outer casing (1).

7. The yarn unwinding bobbin according to claim 1, characterized in that: The diameter of the rubber ring (9) is adapted to the yarn tube, and the rubber ring (9) is made of flexible high-friction rubber with several protrusions distributed in a ring on its surface.

8. The yarn unwinding bobbin according to claim 1, characterized in that: The rotating shaft (8) passes through the sealing plate (7) and connects the inside and outside of the outer casing (1).

Images