Shuttle peg of rotating shuttle

Abstract

The utility model provides a shuttle peg of a rotating shuttle, which comprises a shuttle peg body arranged in an inner shuttle frame, the shuttle peg body comprises a cylinder for winding a bottom thread and side plates arranged at two ends of the cylinder, and the outer side surface of at least one side plate is provided with a resistance surface for limiting the rotation of the shuttle peg body so as to control the tension of the bottom thread. The side plate is provided with the resistance surface with proper friction force, so that resistance is generated between the shuttle peg and the shuttle frame or the shuttle case, the bobbin is prevented from continuously rotating due to inertia to loosen a bottom thread, proper tension of the bottom thread is ensured, and the sewing quality and stability are ensured.

Description

Technical Field

[0001] This utility model relates to the field of rotary shuttle technology, and in particular to a shuttle core. Background Technology

[0002] In existing technology, the bobbin is installed inside the inner shuttle frame through a hole and cooperates with the positioning post of the inner shuttle frame. The bobbin is made of different materials, and the cooperation with the inner shuttle frame is only through the contact between the core and the positioning post. The resistance to the rotation of the bobbin is uncontrollable. Usually, the contact between the bobbin and the positioning post is too smooth, and the resistance is very small. Therefore, when the needle is running at high speed and the rotary hook is rotating too fast, the bobbin will be driven to rotate rapidly. After the rotary hook stops rotating, the spindle rotates due to inertia, causing the thread to continue to be supplied, which increases the length of the thread end after sewing. The thread will become loose and affect the sewing effect. Utility Model Content

[0003] To address the problems of the prior art, this invention provides a bobbin with a resistance surface on its outer side, which works in conjunction with the inner bobbin frame to maintain a suitable tension on the bobbin thread, resulting in better embroidery effects.

[0004] The technical solution adopted is as follows:

[0005] A bobbin for a rotary shuttle includes a bobbin body installed inside an inner shuttle frame. The bobbin body includes a cylinder for winding the bobbin thread and side plates at both ends of the cylinder. At least one of the side plates has a resistance surface on its outer surface that restricts the rotation of the bobbin body to control the tension of the bobbin thread. The resistance surface mates with the corresponding part of the bobbin body.

[0006] Furthermore, the outer side of the side plate is provided with a number of through holes, which are evenly arranged circumferentially.

[0007] Furthermore, the resistance surface is a disc surface located on the outer side of the side plate.

[0008] Furthermore, the bobbin body is located inside the inner shuttle frame, and the resistance surface is located on the side plate near the inner shuttle frame.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This invention provides a bobbin for a rotary hook. The bobbin includes a central winding cylinder and side plates on both sides of the cylinder. At least one side plate has a resistance surface on its outer surface, which mates with the bobbin body. Preferably, the resistance surface is located on the side plate closer to the inner shuttle frame. Independently setting the resistance surface to mate with the inner shuttle frame increases the contact area between the bobbin and the inner shuttle frame, thus increasing resistance. Resistance is controlled by adjusting the size of the resistance surface. When the embroidery machine stops threading, the friction between the inner shuttle frame and the resistance surface of the side plate causes the bobbin to stop rotating promptly, resulting in appropriate tension on the bobbin thread. This ensures moderate tension on the bobbin thread during sewing, thereby guaranteeing the quality and stability of the sewing. Attached Figure Description

[0011] Figure 1 , 2 A schematic diagram showing the structure of two bobbins at different angles engaging with the inner bobbin;

[0012] Figure 3 This is a schematic diagram of the bobbin core structure;

[0013] The components include the bobbin body 1, cylinder 101, side plate 102, resistance surface 2, through hole 3, and inner shuttle frame 4. Detailed Implementation

[0014] The present invention will be further described below with reference to specific embodiments.

[0015] refer to Figure 1-3 A bobbin for a rotary shuttle includes a bobbin body 1 installed inside an inner shuttle frame. The bobbin body 1 includes a cylinder 101 for winding the bobbin thread and side plates 102 located at both ends of the cylinder. At least one of the side plates has a resistance surface 2 on its outer surface to restrict the rotation of the bobbin body and control the tension of the bobbin thread. The resistance surface 2 mates with the bobbin body at a corresponding location. Preferably, the resistance surface 2 is a disc surface located on the outer side of the side plate.

[0016] The bobbin body 1 has an inner bobbin frame 4 at one end and a bobbin sleeve at the other end, which houses and supports the bobbin. Its central hollow shaft is fitted onto the bobbin frame spindle and fixed to the bobbin frame via the bobbin door, ensuring it does not rotate with the bobbin case during operation. The bobbin sleeve contains a spring plate, which, through its elasticity, secures the bobbin thread to the bobbin, preventing it from loosening or falling off during sewing. By adjusting the screw on the spring plate, the tension of the bobbin thread can be precisely controlled to adapt to different sewing needs and materials.

[0017] The bobbin body 1 is located inside the inner shuttle frame 4, and the resistance surface 2 is located on the side plate 102 near the inner shuttle frame 4. The roughness of the contact area between the resistance surface and the inner shuttle frame is independently set, increasing the contact area between the bobbin and the inner shuttle frame, which is beneficial for increasing resistance. Resistance is controlled by adjusting the size of the resistance surface. This ensures that the bobbin generates appropriate resistance when it rotates and contacts the inner wall of the inner shuttle frame. When the embroidery machine leads the bobbin body 1 out, the bobbin drives the bobbin body 1 to rotate. If the embroidery machine stops leading the bobbin, the bobbin will continue to rotate due to inertia. The purpose of the resistance surface 2 is to prevent the bobbin from continuing to rotate when the embroidery machine stops leading the bobbin, thus preventing the bobbin from becoming loose due to continued thread leakage and ensuring a better sewing effect.

[0018] Alternatively, resistance surfaces 2 can be provided on both sides. When rotating, one end generates a certain resistance between itself and the inner wall of the inner shuttle frame 4, and the other end generates resistance between itself and the spring in the bobbin sleeve. This makes it easier for the bobbin to stop rotating. At the same time, in conjunction with the spring, the necessary bottom thread tension is formed to ensure that the bottom thread tension is moderate during the sewing process, thereby ensuring the quality and stability of the sewing.

[0019] The outer surface of the side plate 102 is provided with a plurality of through holes 3, which are evenly arranged circumferentially. In this embodiment, the outer surface is provided with eight circumferentially arranged through holes 3. During the winding process, in order to better drive the bobbin body 1 to rotate relative to the bobbin sleeve, the drive component of the winding machine is equipped with one or two claws that cooperate with the through holes 3. The claws are inserted into any one of the through holes 3 to drive the bobbin body 1 to rotate, thereby achieving better transmission.

[0020] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A bobbin for a rotary hook, comprising a bobbin body (1) mounted inside an inner bobbin holder, said bobbin body (1) comprising a cylinder (101) for winding a thread, side plates (102) provided at both ends of the cylinder, characterized in that: The outer side of at least one of the side plates is provided with a resistance surface (2) for limiting the rotation of the bobbin body to control the tension of the bottom thread, and the resistance surface (2) is matched with the bobbin body.

2. The bobbin of the rotary hook bobbin of claim 1 wherein: The outer side of the side plate (102) is provided with a plurality of through holes (3) which are uniformly arranged in the circumferential direction.

3. The bobbin of claim 2, wherein: The bobbin body (1) is arranged inside the inner bobbin holder (4), and the resistance surface (2) is arranged on the side plate (102) close to one side of the inner bobbin holder (4).

4. The bobbin of the rotary hook bobbin of claim 1 wherein: The resistance surface (2) is a disc surface arranged on the outer side of the side plate.

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