A moon ring and embroidery rotating shuttle
By improving the moon ring structure and adopting an arc-shaped inward-shrinking structure and guide block, the problems of thread jamming and dislocation in embroidery machines have been solved, achieving stability in thread guidance and precision in high-speed embroidery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING SHENGQUAN PRECISION MASCH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
During high-speed production, the embroidery thread is prone to getting stuck or coming off at the shuttle, causing the embroidery operation to be interrupted.
A crescent structure is designed, including an arc-shaped inward-curving structure and a guide block, to smoothly guide the embroidery thread. The precise nesting installation structure improves the fit and stability between the crescent and the shuttle bed, preventing the embroidery thread from getting stuck.
It improves the stability of embroidery thread guidance, reduces thread jamming and breakage, and ensures the stability and precision of high-speed embroidery operations.
Smart Images
Figure CN224494566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of textile machinery technology, and in particular to a moon ring and embroidery rotary shuttle. Background Technology
[0002] With the continuous advancement of technological research and development, the efficiency and application scope of embroidery machines and embroidery techniques are expanding, enabling the creation of beautiful, complex, and layered embroidery effects on fabrics. A modern high-speed embroidery machine typically has hundreds of embroidery needles arranged side-by-side, performing programmed embroidery operations at a rate exceeding several thousand times per minute, thus significantly increasing the production capacity of modern high-speed embroidery machines.
[0003] In high-speed production processes of equipment such as large embroidery machines, the rotary shuttle is the core component for forming double-lock stitches. It consists of a shuttle bed, a rotary shuttle skin, a rotary shuttle plate, and a rotary frame. It hooks the embroidery thread through constant angular velocity rotation and completes the interlacing sewing around the bobbin. Its working cycle is divided into three stages: hooking the thread, separating the thread, and releasing the thread. For every one revolution of the main shaft, the shuttle bed rotates twice. Specific angle ranges correspond to the hooking of the thread loop and the withdrawal of the needle, thereby achieving high-precision and complex embroidery operations. Currently, ultra-high-speed embroidery machines can achieve an embroidery operation of about 2,000 stitches per minute, while the shuttle bed rotates at a speed of about 4,000 revolutions per minute. Therefore, ensuring the stable and efficient operation of the rotary shuttle mechanism is one of the basic conditions for achieving high-speed embroidery operations.
[0004] The applicant has been studying rotary hook technology for a long time and, through long-term observation, found that the main reason for thread breakage or needle slippage in embroidery machines is that the embroidery thread gets stuck or dislodged during the process of being guided, hooked, or separated at the rotary hook, thus interrupting the embroidery operation. Summary of the Invention
[0005] The purpose of this invention is to provide a crescent ring and embroidery shuttle, which, through a reasonably connected structural arrangement, makes the embroidery thread smoother during the embroidery guiding process, thereby improving the stability of the embroidery operation.
[0006] To achieve the above objectives, the technical solution of this utility model is as follows:
[0007] A moon ring includes a body, a front end, and a rear end. The front end extends forward and forms a guide structure on the upper surface of the moon ring. The rear end forms a rounded chamfer structure on the side wall of the moon ring. Viewed from above, the inner edge of the guide structure is an arc-shaped inward-curving structure. The arc-shaped inward-curving structure transitions arc-shapedly from the front end to the rear end, creating a smooth and uninterrupted embroidery thread guide structure for the construction of the inner edge of the moon ring.
[0008] Furthermore, the arc-shaped inward-curving structure is a concave structure with a radius of 15 to 25 millimeters for the concave arc, and both ends have arc-shaped chamfered structures. This makes guiding the embroidery thread smoother and more continuous.
[0009] Furthermore, a guide block is arranged on the inner side of the connection between the rear end and the upper edge, and the lower end of the guide block has an arc-shaped chamfer structure.
[0010] Furthermore, the sidewall of the guide block and the inner wall of the corresponding shuttle bed are arranged in an X-shaped staggered structure. This prevents the embroidery thread from getting stuck between them and makes the thread guidance smoother.
[0011] Furthermore, a reinforcing section is arranged parallel to the lower edge of the guide structure, which is used to improve the firmness and accuracy of the connection between the moon ring and the shuttle bed.
[0012] Furthermore, the reinforcing part is an arc-shaped extension structure, with its front end being an arc-shaped structure, and its length can be equal to or less than the length of the front end.
[0013] Furthermore, the reinforcing part is a flat block structure or a square structure, and its front end is an arc-shaped or triangular transition structure, the length of which is less than the length of the front end.
[0014] An embroidery shuttle includes a shuttle bed, a shuttle frame, and a crescent ring. The shuttle bed has a shuttle skin and the crescent ring installed on its outer edge by screws. The rear end of the shuttle bed is fixedly installed to the shuttle shaft and achieves high-speed rotation. The shuttle frame is arranged inside the shuttle bed and is installed and limited by a guide rail and a groove structure. The upper edge and front end of the crescent ring are inwardly fastened to the guide rail of the shuttle frame, enabling the shuttle bed to rotate stably and at high speed on the outer ring of the shuttle frame.
[0015] The moon ring has a mating installation structure on the inner wall of the rear end of the front end, and a corresponding installation groove is arranged on the shuttle bed. The installation groove can match the mating installation structure and make the front end, the reinforcing part and the mating installation structure fit precisely against the outer wall of the shuttle bed.
[0016] Furthermore, the front end is positioned at the lower edge of the opening of the shuttle skin on the shuttle bed, and the front end is inserted into the position of the front end of the opening, while the rear end of the shuttle skin covers and is installed at the installation joint between the ring and the shuttle bed.
[0017] Furthermore, the inner wall of the shuttle bed at the corresponding position of the rear end of the moon circle has an inward arc-shaped cutting structure, and the guide block and the rear end are staggered with the corresponding inner wall of the shuttle bed.
[0018] Compared with existing technologies, this solution has the following advantages:
[0019] This solution, a rotary embroidery shuttle, aims to provide high-speed embroidery machines with precise, efficient, and stable thread guiding. The key improvement lies in the coordination structure between the embroidery loop and the shuttle bed. The front end of the embroidery loop is extended and positioned at the shuttle bed, with its guiding structure located below the shuttle bed's tip. Therefore, the embroidery thread descending from the shuttle bed's tip will not get stuck at the connection between the embroidery loop and the shuttle bed in traditional systems, greatly improving the stability of thread guiding. Furthermore, when this section of thread contacts the inner wall of the embroidery loop, the arc-shaped guiding structure at the front end ensures that the thread is perfectly guided without any additional protrusions or changes during the guiding process, further enhancing the stability of thread guiding.
[0020] In this design, the upper surface of the groove of the shuttle bed is more complete by extending the front end forward. When the shuttle frame is arranged inside it, the guide rail of the shuttle frame can be smoother inside the groove, reducing friction or impact, thereby improving the stability and service life of the rotary shuttle.
[0021] To improve the accuracy and stability of the shuttle and moon ring installation, this solution uses a precise nesting arrangement as its main structure. A mating installation structure is provided on the inner wall of the moon ring, and a corresponding installation groove is arranged on the shuttle. This allows the mating installation structure to be precisely positioned within the groove, achieving a precise and stable installation. This also reduces installation errors caused by traditional screw fixing, thus improving installation precision. During actual installation, the moon ring can be slid forward along the shuttle. The outer edge of the moon ring at the front end can be appropriately chipped to facilitate the forward movement. When the mating installation structure falls into the groove, the two are precisely aligned. The operator then secures the two tightly with screws, reducing human error and improving system precision.
[0022] This solution improves upon the traditional right-angle structure at the rear end of the crescent ring by using an arc structure and a guide block structure, along with the corresponding arc-shaped cutting structure of the shuttle bed, to achieve a multi-layered anti-jamming layout. This allows the upward embroidery thread to be guided smoothly without any right-angled edges or gaps that can be restricted, thus greatly improving the stability of the guidance.
[0023] This solution aims to guide the embroidery thread smoothly, providing a foundation for high-speed embroidery operations. Even if the embroidery thread jumps or moves abnormally during high-speed guidance, it can avoid various abnormal situations such as thread jamming or snagging, greatly improving the stability of the embroidery thread guidance. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the standard installation structure of the rotary hook in a preferred embodiment.
[0025] Figure 2 This is a schematic diagram of the upright structure of a rotary shuttle.
[0026] Figure 3 This is a schematic diagram showing the structural breakdown of a rotary shuttle.
[0027] Figure 4 This is a schematic diagram showing another structural breakdown of the rotary shuttle.
[0028] Figure 5 This is a schematic diagram of the installation structure of the shuttle bed.
[0029] Figure 6 This is a schematic diagram of the installation structure of the shuttle bed and the moon ring.
[0030] Figure 7 This is a structural breakdown diagram of the shuttle bed and the lunar orbiter.
[0031] Figure 8 This is a schematic diagram of the structure of the lunar circle.
[0032] Figure 9 This is a schematic diagram of the lunar orbit from another perspective. Detailed Implementation
[0033] In 1769, British engineer John Kay Sage invented the rotary hook, a device that revolutionized traditional shuttles by eliminating reliance on manual labor. Through its rotational principle, it allowed for faster threading on looms, saving labor and increasing production efficiency. Over the years, rotary hook technology has become increasingly sophisticated. However, with the development of high-speed sewing equipment, especially high-speed embroidery machines, rotary hooks need to operate at approximately 4000 revolutions per minute, placing increasingly higher demands on their precision and durability. Secondly, with the development of precision machining technology in China, even the design of intricate structures on extremely small parts has become possible, making processing costs more suitable for large-scale industrial manufacturing. The applicant fully understands the shortcomings of existing technologies, has conducted in-depth research, and is committed to improving the rotary hook design to suit high-speed embroidery operations, enhancing the accuracy and reliability of thread guidance, and reducing thread jams and breakage.
[0034] refer to Figures 1 to 4 ( Figure 1 (The following attached diagram shows the rotary shuttle in an upright position for better illustration, which is a standard horizontal installation structure.) An embroidery rotary shuttle includes a shuttle bed 1 and a shuttle frame 4. A ring 2 and a shuttle skin 3 are installed on the outer edge of the shuttle bed 1 by screws. The rear end of the shuttle bed 1 is fixedly installed with the rotary shuttle shaft and can rotate at high speed. The shuttle frame 4 is arranged inside the shuttle bed and is installed and limited by a guide rail and groove structure. The shuttle frame 4 contains components such as a shuttle core and a shuttle core sleeve. Embroidery thread is arranged on the shuttle core for carrying out corresponding embroidery operations.
[0035] A groove 11 is provided on the inner wall of the shuttle bed 1, and a guide rail 41 is arranged around the shuttle frame 4. When the shuttle frame 4 is arranged inside the shuttle bed 1, the guide rail 41 is just contained within the groove 11, and the shuttle frame 4 is relatively fixed. The shuttle bed 1 rotates at high speed around the shuttle frame 4 under the drive of the rotary shuttle shaft. Through the restriction of the groove 11 and the guide rail 41, the two are precisely matched, and finally, with the cooperation of the embroidery needle, a precise and high-speed embroidery operation is achieved.
[0036] In this design, the shuttle skin 3 is typically made by stamping thin metal sheets, followed by deburring and polishing to achieve a smooth surface and edges. The shuttle bed 1, shuttle frame 4, and crescent ring 2 are made by precision metal machining. Typical machining methods include engraving on a multi-axis CNC milling machine, or by precision mold metal powder stamping or injection molding. After deburring and polishing, the finished product can precisely reproduce the design requirements such as edge chamfering.
[0037] refer to Figures 5 to 9 The crescent ring 2 is an important component in the rotary shuttle. When the shuttle frame 4 is installed, the crescent ring 2 needs to be disassembled. When the shuttle frame 4 is installed inside the shuttle bed 1, the crescent ring 2 plays the role of installation positioning and limiting. The upper edge of the crescent ring 2 is an important part of the groove 11, which plays the role of positioning and limiting both, and supports the smooth high speed of both.
[0038] One of the key innovations of this design lies in the improvement of the moon ring 2. Specifically, the moon ring includes a body, a front end 21, and a rear end 22. The front end extends forward and a guide structure is constructed along the upper edge 20 of the moon ring 2. The rear end 22 has a rounded chamfered structure 23 on the side wall of the moon ring. Viewed from above, the inner edge of the guide structure of the front end 21 is an arc-shaped inward-curving structure 24. The arc-shaped inward-curving structure 24 transitions from the front end to the rear end in an arc shape, making the construction of the inner edge of the moon ring 2 a smooth and uninterrupted embroidery thread guide structure. The arc-shaped inward-curving structure 24 is a concave structure with a radius of concave arc between 15 and 25 millimeters. Both ends and the outer wall are arc-shaped chamfered structures, which can make the embroidery thread guidance smoother and more continuous.
[0039] A reinforcing part 26 is arranged parallel to the lower edge of the front end 21. The reinforcing part 26 is used to improve the firmness and accuracy of the installation and connection between the moon ring 2 and the shuttle bed 1.
[0040] In one embodiment, the reinforcing part 26 is an arc-shaped extension structure with an arc-shaped front end, the length of which may be equal to or less than the length of the front end.
[0041] In the actual physical design and development process, the reinforcing part 26 is a flat block structure or a square structure, and its front end can be an arc-shaped or triangular transition structure, and its length is less than the length of the front end.
[0042] In one embodiment, a guide block 25 is arranged on the inner side of the connection between the rear end 22 and the upper edge. The lower end of the guide block 25 has an arc-shaped chamfered structure, and the side wall of the guide block 25 and the inner wall corresponding to the shuttle bed 1 have an X-shaped staggered arrangement structure. This prevents the embroidery thread from getting stuck between them and makes the embroidery thread guidance smoother.
[0043] The moon ring 2 has a mating installation structure on the inner wall of the rear end of the front end 21. A mounting groove 12 is arranged at the corresponding position on the shuttle bed 1. The mounting groove 12 can match the mating installation structure. The mounting groove 12 has the mating structure of the front end 21 and the reinforcing part 26 at the same time, and realizes the precise fit between the moon ring 2 and the outer wall of the shuttle bed 1, so that it has a continuous groove 11 structure on the inner side and a smooth arc transition structure on the outer side.
[0044] In actual installation, the front end 21 is positioned at the lower edge of the opening 31 of the shuttle skin 3 of the shuttle bed 1, and the front end 21 is inserted into the position inside the opening 31. The rear end of the shuttle skin 3 is installed over the installation joint between the moon ring 2 and the shuttle bed 1, so that the outer surface of the shuttle bed 1 can be made smoother and gaps reduced.
[0045] In one embodiment, the inner wall of the shuttle bed 1 at the position corresponding to the rear end 22 of the moon ring 2 is an arc-shaped cutting structure 13, and the guide block 25 and the rear end 22 are staggered guide structures with the corresponding inner wall of the shuttle bed.
[0046] In the actual process of guiding the embroidery thread, as the shuttle bed 1 rotates counterclockwise, the embroidery thread slides down from the rear end of the take-up opening 31 of the shuttle skin 3. In a traditional rotary shuttle structure, the embroidery thread would instantly fall to the seam between the shuttle bed 1 and the crescent ring 2. At this time, the embroidery thread stuck at the seam is very likely to come into contact with the thread-separating tip at the front end of the guide rail 41 of the shuttle frame 4, resulting in the embroidery thread being cut or stuck. In this solution, since the front end 21 extends forward, its corresponding seam with the shuttle bed 1 is also arranged forward. Furthermore, the precise structure of this solution allows the crescent ring 2 and the shuttle bed 1 to be installed in a tightly fitted state at the seam. Therefore, when the rotary shuttle is working, the embroidery thread slides down from the rear end of the take-up opening 31, which has perfectly offset the seam between the crescent ring 2 and the shuttle bed 1. Moreover, due to the smooth transition of the arc-shaped inward-curving structure 24, the embroidery thread can be guided very well between the crescent ring 2 and the shuttle bed 1. Under the guidance of the thread-separating tip at the front end of the guide rail 41 of the shuttle frame 4, precise thread separation operation is achieved, providing support for high-speed sewing.
[0047] At the rear end 22 of the moon ring 2, when the embroidery operation involves the spinning shuttle unwinding the thread, the arc-shaped cutting structure 13 of the shuttle bed 1, the rounded chamfer structure 23 of the rear end 22, and the guide block 25 ensure that the X-shaped combination structure can prevent the embroidery thread from intruding into the gap between the shuttle bed 1 and the moon ring 2, and also prevent the embroidery thread from jumping or moving due to the discontinuous structure, thus greatly improving the stability of high-speed embroidery operation.
[0048] In summary, this embroidery rotary shuttle solution aims to provide high-speed embroidery machines with precise, efficient, and stable thread guiding. The solution focuses on improving the cooperation structure between the embroidery loop and the shuttle bed. The front end of the embroidery loop is extended and positioned at the shuttle bed, with its guiding structure located below the shuttle bed's tip. Therefore, the embroidery thread descending from the shuttle bed's tip will not get stuck at the connection seam between the embroidery loop and the shuttle bed in traditional systems, greatly improving the stability of thread guiding. Furthermore, when this section of thread contacts the inner wall of the embroidery loop, the arc-shaped guiding structure at the front end ensures that the thread is perfectly guided without any additional protrusions or changes during the guiding process, further enhancing the stability of thread guiding.
[0049] To improve the accuracy and stability of the shuttle and moon ring installation, this solution uses a precise nesting arrangement as its main structure. A mating installation structure is provided on the inner wall of the moon ring, and a corresponding installation groove is arranged on the shuttle. This allows the mating installation structure to be precisely positioned within the groove, achieving a precise and stable installation. This also reduces installation errors caused by traditional screw fixing, thus improving installation precision. During actual installation, the moon ring can be slid forward along the shuttle. The outer edge of the moon ring at the front end can be appropriately chipped to facilitate the forward movement. When the mating installation structure falls into the groove, the two are precisely aligned. The operator then secures the two tightly with screws, reducing human error and improving system precision.
[0050] This solution improves upon the traditional right-angle structure at the rear end of the crescent ring by using an arc structure and a guide block structure, along with the corresponding arc-shaped cutting structure of the shuttle bed, to achieve a multi-layered anti-jamming layout. This allows the upward embroidery thread to be guided smoothly without any right-angled edges or gaps that can be restricted, thus greatly improving the stability of the guidance.
[0051] This solution aims to guide the embroidery thread smoothly, providing a foundation for high-speed embroidery operations. Even if the embroidery thread jumps or moves abnormally during high-speed guidance, it can avoid various abnormal situations such as thread jamming or snagging, greatly improving the stability of the embroidery thread guidance.
Claims
1. A lunar ring, characterized in that: It includes a main body, a front end, and a rear end. The front end extends forward and constructs a guide structure on the upper surface of the moon ring. The rear end constructs a rounded chamfer structure on the side wall of the moon ring. Viewed from above, the inner edge of the guide structure is an arc-shaped inward-sloping structure. The arc-shaped inward-sloping structure transitions from the front end to the rear end in an arc shape, making the construction of the inner edge of the moon ring a smooth and non-jamming embroidery thread guide structure.
2. A lunar ring according to claim 1, characterized in that: The arc-shaped inward-curving structure is a concave structure with a radius of 15 to 25 millimeters for the concave arc, and both ends are arc-shaped chamfered structures.
3. A lunar ring according to claim 1, characterized in that: The rear end has a guide block arranged on the inner side of the connection between the side wall and the upper edge, and the lower end of the guide block has an arc-shaped chamfer structure.
4. A lunar ring according to claim 3, characterized in that: The sidewalls of the guide block and the inner wall of the shuttle bed are arranged in an X-shaped staggered structure.
5. A lunar ring according to claim 1, characterized in that: A reinforcing section is arranged parallel to the lower edge of the guide structure. The reinforcing section is used to improve the firmness and accuracy of the connection between the moon ring and the shuttle bed.
6. A lunar ring according to claim 5, characterized in that: The reinforcing part is an arc-shaped extension structure, with its front end being an arc-shaped structure, and its length can be equal to or less than the length of the front end.
7. A lunar ring according to claim 5, characterized in that: The reinforcing part is a flat block structure or a square structure, and its front end is an arc-shaped or triangular transition structure, the length of which is less than the length of the front end.
8. An embroidery shuttle, comprising a shuttle bed, a shuttle frame, and a crescent ring as described in any one of claims 1 to 7, characterized in that: The shuttle bed is fitted with a shuttle skin and a crescent ring by screws along its outer edge. The rear end of the shuttle bed is fixedly installed with the rotary shuttle shaft and achieves high-speed rotation. The shuttle frame is arranged inside the shuttle bed and is installed and limited by guide rails and groove structures. The upper edge and front end of the crescent ring are inwardly fastened to the guide rails of the shuttle frame and enable the shuttle bed to rotate stably and at high speed on the outer ring of the shuttle frame. The moon ring has a mating installation structure on the inner wall of the rear end of the front end, and a corresponding installation groove is arranged on the shuttle bed. The installation groove can match the mating installation structure and make the front end, the reinforcing part and the mating installation structure fit precisely against the outer wall of the shuttle bed.
9. The embroidery rotary shuttle according to claim 8, characterized in that: The front end is positioned at the lower edge of the opening of the shuttle skin on the shuttle bed, and the front end is inserted into the position of the front end of the opening. The rear end of the shuttle skin is covered and installed at the installation joint between the ring and the shuttle bed.
10. The embroidery rotary shuttle according to claim 8, characterized in that: The inner wall of the shuttle bed at the corresponding position of the rear end of the moon circle has an inward arc-shaped cutting structure, and the guide block and the rear end are staggered with the corresponding inner wall of the shuttle bed.