A limiting installation structure of a weft yarn cylinder of a circular weaving machine shuttle

Abstract

This invention discloses a limiting installation structure for the weft yarn bobbin of a circular loom, including a mounting base, a movable component, an operating component, and an elastic component. The mounting base is provided with a guide groove, which includes a first groove segment, a second groove segment, and a transition groove segment. The first groove segment includes an axially extending abutment surface and a limiting surface connected to the abutment surface. The limiting surface is located at the end of the abutment surface away from the connector. The abutment surface allows the operating component to abut against the elastic component, and the limiting surface is used to axially limit the operating component. This invention applies a force towards the abutment surface to the operating component through the circumferential torque of the elastic component, preventing the operating component from retracting. Furthermore, the limiting surface directly blocks the backward movement of the operating component, effectively preventing the weft yarn bobbin from falling off during circular loom operation, while also ensuring the convenience of weft yarn bobbin replacement.

Description

Technical Field

[0001] This invention relates to the field of circular loom technology, and more specifically to a limiting installation structure for the shuttle weft yarn cylinder of a circular loom. Background Technology

[0002] A circular loom is an industrial device used for weaving tube fabric, and the shuttle is the core operating component of the circular loom. The shuttle has two opposing mounting sections, each with a rotatable connector. These connectors are a fixed connector and a movable connector, used to clamp the two ends of the weft yarn tube. At least one connector can move axially to change the mounting space between the two connectors, facilitating the replacement of the weft yarn tube. An elastic element is included within the mounting section to drive the movable connector to axially reset, clamping the weft yarn tube between the two connectors.

[0003] In existing technology, the weft bobbin relies solely on the axial force applied by the elastic element to maintain axial positioning after installation. However, in actual production, the shuttle rotates at high speed between the upper and lower gates of the circular loom, and the weft yarn on the weft bobbin is continuously pulled and unwound into the circular loom. As the shuttle moves at high speed along the upper and lower gates and the weft yarn is continuously pulled, the weft bobbin is subjected to forces in multiple directions, including an axial component from the fixed connector to the moving connector. This axial component compresses the moving connector, forcing it to drive the lever on it to move away from the fixed connector along the guide groove, thereby compressing the elastic element and increasing the installation space between the two connectors.

[0004] Because the contact area between the central shaft hole of the weft yarn bobbin and the two connectors is limited, the weft yarn bobbin only relies on the end of the central shaft hole to abut against the constricted part or radial step of the connector. When the installation space increases to a certain extent, the weft yarn bobbin may fall off between the two connectors, with the weft yarn bobbin falling off at the fixed connector first, causing production interruption and affecting the continuity of normal production and product quality.

[0005] The applicant's earlier application CN215828980U discloses a shuttle for a plastic circular loom, with a guide groove on its mounting base. A lever can slide within the guide groove, and a locking groove is provided at the end of the guide groove for locking the lever when changing the weft bobbin. However, the locking groove of this guide groove is only used to temporarily lock the retracting lever when changing the weft bobbin, and does not solve the problem that the weft bobbin may fall off due to axial force during normal operation of the circular loom. Under normal operating conditions, the lever is located in the guide groove, and the axial thrust of the weft bobbin is resisted only by the elastic force of the elastic element, lacking an effective rigid limiting structure to prevent abnormal backward movement of the lever. When the weft traction force generates a large axial component force, the lever may overcome the elastic force and move backward along the guide groove, causing the weft bobbin to loosen or fall off.

[0006] Therefore, there is an urgent need for a limiting installation structure that can effectively prevent the weft yarn bobbin from falling off axially during normal operation of a circular loom, while also ensuring the convenience of weft yarn bobbin replacement. Summary of the Invention

[0007] This invention overcomes the shortcomings of the prior art. Its structure is reasonably designed. By setting the first section of the guide groove to have a contact surface and a limiting surface, and cooperating with the axial elastic force and circumferential torque of the elastic element, the operating element is kept in the first section. This can effectively prevent the weft yarn bobbin from falling off during the operation of the circular loom, while not affecting the convenience of weft yarn bobbin replacement.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A limiting installation structure for a weft yarn bobbin on a circular loom includes a mounting base with an axially oriented mounting hole; a movable member that passes through the mounting hole and can move axially and rotate circumferentially within it, with a connector for connecting the weft yarn bobbin at the end of the movable member away from the mounting base; an operating member fixedly connected to the movable member; and an elastic member disposed within the mounting hole, one end of which is connected to the movable member and the other end to the mounting base, the elastic member possessing axial elastic force and circumferential torsional force; a guide groove is provided on the mounting base, and the operating member passes through the guide groove and can move axially and rotate circumferentially within it. Sliding; the guide groove includes a first groove segment, a second groove segment for limiting the retraction of the operating member, and a transition groove segment connecting the first and second groove segments. The first groove segment includes an axially extending abutment surface and a limiting surface connected to the abutment surface. The limiting surface is located at the end of the abutment surface away from the connector. Under the circumferential torsion of the elastic member, the operating member can abut against the abutment surface or have a gap with the abutment surface and maintain a tendency to approach the abutment surface. The limiting surface is used to block and limit the operating member when the moving member moves axially against the axial elastic force of the elastic member.

[0009] By adopting the above technical solution, the first section of the guide groove has two functional surfaces: a contact surface and a limiting surface. During normal operation of the circular loom, the elastic element simultaneously applies axial elastic force and circumferential torque to the moving part. Under the circumferential torque of the elastic element, the operating part can abut against the contact surface or maintain a gap with the contact surface while tending to approach it. This ensures that the operating part can only be located in the first groove section, effectively preventing the circumferential rotation of the moving part from causing the operating part to move along the guide groove from the first groove section through the transition section into the second groove section, thus increasing the installation space between the two connectors. When the operating part is pressed against the contact surface by the circumferential torque of the elastic element, when the weft yarn cylinder is subjected to the weft yarn traction force, generating an axial component force, this force is transmitted to the operating part through the connector and the moving part, attempting to push the operating part backward along the contact surface. The contact friction between the operating part and the contact surface, as well as the axial elastic force of the elastic element, jointly resist this axial thrust, forming the first-level limiting. Torque keeps the operating component stable on the abutment surface under elastic action, preventing it from detaching during vibrations in the circular loom. When the axial force on the weft bobbin is large, causing the operating component to move backward along the abutment surface to the limiting surface position, the limiting surface directly restricts the operating component from moving further backward through rigid blocking, forming a second-level limiting. Through the coordinated action of the first-level limiting on the abutment surface and the second-level limiting on the limiting surface, the first-level limiting absorbs and resists the normal axial force of the weft bobbin under normal working conditions, while the second-level limiting acts as a backup to completely prevent the weft bobbin from falling off in abnormal situations. When there is a gap between the operating component and the abutment surface, i.e., the operating component is suspended in the first groove section, the limiting surface can directly block and limit the operating component when the moving part overcomes the axial elastic force of the elastic component and moves backward to its maximum position. The second groove section is used to accommodate and limit the operating component when changing the weft bobbin. At this time, the operating component retracts along the guide groove, and the second groove section limits the operating component. The transition groove connects the first and second grooves, and the operating component can slide along the transition groove to switch between working and changing states. This structure effectively solves the problem of weft bobbins loosening or falling off due to axial force during circular loom operation, while ensuring convenient weft bobbin replacement.

[0010] Preferably, the abutting surface and the limiting surface are arranged at an angle, and the angle between the abutting surface and the limiting surface is an acute angle, a right angle or an obtuse angle.

[0011] By adopting the above technical solution, the abutment surface extends axially to provide an axial sliding reference surface for the operating component, while the limiting surface can extend radially perpendicular to the abutment surface. The abutment surface and the limiting surface are set at an angle. During normal operation, the operating component is limited to this angle. Specifically, this angle can be rounded to better accommodate and limit the operating component. The angle between the abutment surface and the limiting surface can be acute, right, or obtuse, meaning the tilt direction and angle of the limiting surface relative to the abutment surface can be changed, as long as the limiting surface can axially limit the movement of the operating component.

[0012] Preferably, an anti-detachment protrusion and / or a limiting corner are provided between the limiting surface and the transition groove section to prevent the operating component from sliding from the limiting surface into the transition groove section during the operation of the circular loom.

[0013] By adopting the above technical solution, the operating component is located in the first groove section during normal operation of the circular loom. Even if the operating component moves to the limiting surface position due to the axial thrust of the weft yarn cylinder, the anti-detachment protrusion or limiting corner can prevent the operating component from accidentally sliding into the transition groove section from the limiting surface, ensuring that the operating component is always constrained within the working area of ​​the first groove section. This completely guarantees the continuous effectiveness of the rigid limiting function of the limiting surface and prevents the operating component from leaving the working area and entering the replacement area due to vibration or external force.

[0014] Preferably, the elastic element has two ends extending axially, one end being fixedly connected to the movable element and the other end being fixedly connected to the mounting base.

[0015] By adopting the above technical solution, the arrangement at both ends allows the elastic element to exert both axial elastic force and circumferential torsional force. The synergistic effect of these two elastic forces ensures that the operating element remains stably positioned in the first groove section during operation.

[0016] Preferably, the rear end of the movable part is provided with a receiving cavity, the elastic element is located in the receiving cavity, the movable part is provided with a first fixing hole at the receiving cavity, the rear end of the mounting base is provided with a second fixing hole, and the two ends of the elastic element are respectively fixed in the first fixing hole and the second fixing hole.

[0017] By adopting the above technical solution, the receiving cavity provides installation space and protection for the elastic element. Both ends of the elastic element are inserted and fixed in the first fixing hole of the movable part and the second fixing hole of the mounting base, respectively, making the installation simple and reliable. When the operating part moves back along the guide groove, the elastic element is twisted and compressed, generating corresponding torque and axial elastic force.

[0018] Preferably, the operating component and the movable component are separate structures, and the operating component and the movable component are fixedly connected.

[0019] By adopting the above technical solution, the operating component and the moving component are manufactured separately and then fixedly connected. Different materials and processing techniques can be used for both, facilitating their respective structural optimization and manufacturing. The split structure also facilitates assembly and maintenance; when the operating component is damaged, it can be replaced individually without replacing the entire moving component. The fixed connection method can employ plug-in, threaded, or riveting connections, ensuring reliable connection and guaranteeing synchronous movement and force transmission between the operating component and the moving component.

[0020] Preferably, the second groove segment is a limiting groove segment arranged radially or axially.

[0021] By adopting the above technical solution, the second groove section acts as a limiting groove section, accommodating and limiting the operating component during weft bobbin replacement. The operator moves the operating component back along the transition groove section into the second groove section, where it is confined. At this point, the movable component is locked in the retracted position, increasing and stabilizing the installation space between the two connectors. The operator can freely pick up and put down the weft bobbin with both hands without needing to continuously apply force to keep the movable component retracting. After replacement, the operating component is removed from the second groove section, and under the action of the elastic element, it returns to the first groove section via the transition groove section. The design of the second groove section balances the convenience of weft bobbin replacement with the reliability of the working state.

[0022] Preferably, the end of the movable part is provided with a rotating support, and the connector is rotatably sleeved on the movable part through the rotating support.

[0023] By adopting the above technical solution, the rotating support provides rotational support for the connector, allowing the connector to rotate freely relative to the moving parts. The weft bobbin is installed between the two connectors. During the operation of the circular loom, the weft bobbin rotates with the weft yarn unwinding. The connector rotates synchronously with the weft bobbin through the rotating support, reducing the frictional resistance between the weft bobbin and the connector and ensuring smooth weft yarn unwinding.

[0024] Preferably, the mounting base is fixedly connected to the shuttle, the top surface of the mounting base is an arc surface, and the guide groove is opened on the arc surface and communicates with the mounting hole.

[0025] By adopting the above technical solution, the mounting base is fixedly connected to the shuttle, providing a stable mounting foundation for the moving and elastic parts. The top surface of the mounting base adopts an arc design, and the guide groove is opened on the arc surface and communicates with the mounting hole. The operating part passes through the guide groove, and the movement of the operating part is precisely guided by the guide groove.

[0026] Preferably, the axial length of the first groove segment is adapted to the connection contact length between the weft yarn bobbin and the connector, so that the weft yarn bobbin always maintains connection contact with the connector before the operating member abuts against the limiting surface.

[0027] By adopting the above technical solution, the axial length of the first groove section is designed to match the actual contact length between the weft bobbin and the connector. When the weft bobbin is pushed backward along the abutment surface by the axial thrust, sufficient contact length is maintained between the weft bobbin and the connector before the operating member reaches the limiting surface, preventing the weft bobbin from falling off. The limiting surface, as the final rigid limit, effectively prevents the operating member from moving further backward. By reasonably setting the axial length of the first groove section, it is ensured that the weft bobbin will not fall off.

[0028] Compared with the prior art, the present invention has, but is not limited to, the following main beneficial effects: 1. By setting an abutment surface and a limiting surface in the first section of the guide groove, the operating part abuts against the abutment surface under the action of the elastic element, and relies on the elastic force and friction to resist the axial thrust of the weft yarn tube; when the operating part moves backward to the limiting surface position, the limiting surface provides rigid limitation, directly blocking the operating part from moving backward, and completely eliminating the risk of the weft yarn tube falling off during the operation of the circular loom.

[0029] 2. Through the structural design of the elastic element, both axial elastic force and circumferential torsional force can be applied to the moving part simultaneously. The synergistic effect of these two elastic forces ensures that the operating part is always in the correct limit position during operation, improving the reliability and stability of the limit structure and preventing the operating part from retracting along the guide groove during circular loom operation.

[0030] 3. By setting anti-detachment protrusions and / or limiting corners between the limiting surface and the transition groove, the operating part is prevented from accidentally sliding into the transition groove from the limiting surface during the operation of the circular loom. This ensures the continuous effectiveness of the rigid limiting function of the limiting surface and prevents the operating part from leaving the working area due to vibration or external force. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a specific embodiment of the present invention; Figure 2 This is a cross-sectional view of a specific embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the structure of the mounting base in a specific embodiment of the present invention. Figure 1 ; Figure 4 This is a schematic diagram illustrating the structure of the mounting base in a specific embodiment of the present invention. Figure 2 ; Figure 5 This is a schematic diagram illustrating the structure of the moving parts in a specific embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the structure of the elastic element in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a shuttle according to a specific embodiment of the present invention.

[0032] In the diagram: 100, mounting base; 101, mounting hole; 102, second fixing hole; 200, moving part; 201, receiving cavity; 202, first fixing hole; 300, connector; 400, operating part; 500, elastic part; 600, guide groove; 601, first groove segment; 602, second groove segment; 603, transition groove segment; 604, abutment surface; 605, limiting surface; 606, limiting corner; 700, shuttle. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments of this invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] The following is combined with Figure 1-7 The technical solution of the present invention will be described in further detail below.

[0035] This embodiment provides a limiting installation structure for the weft yarn bobbin of a circular loom shuttle. This limiting installation structure is used for the installation and limiting of the weft yarn bobbin on the circular loom shuttle 700, and can prevent the weft yarn bobbin from loosening or falling off during normal operation of the circular loom.

[0036] Please refer to the limiting installation structure of this embodiment, which mainly includes a mounting base 100, a movable component 200, an operating component 400, and an elastic component 500. The specific structure and connection relationship of each part are described below.

[0037] Mounting base 100 Mounting base 100 serves as the supporting foundation for the entire limiting mounting structure and is fixedly connected to shuttle 700. Mounting base 100 is a block-shaped body with an arc-shaped top surface. Mounting base 100 has an axially oriented mounting hole 101 and a guide groove 600. The guide groove 600 is located on the arc-shaped top surface of mounting base 100 and communicates with the mounting hole 101. The guide groove 600 penetrates the wall thickness of the arc-shaped top surface, allowing the operating member 400 to pass through the mounting hole 101 and connect with the movable member 200. A second fixing hole 102 is provided at the rear end of mounting base 100 for fixing one end of the elastic member 500.

[0038] 200 active items The movable component 200 passes through the mounting hole 101 of the mounting base 100 and can move axially and rotate circumferentially within the mounting hole 101. The movable component 200 has a shaft-like structure, and its end away from the mounting base 100 (i.e., the front end) is provided with a connector 300 for connecting the weft yarn bobbin. This connector 300 is specifically a movable connector. The front end of the movable component 200 is provided with a rotating support, specifically a bearing. The connector 300 is rotatably fitted onto the front end of the movable component 200 via the bearing, allowing the connector 300 to rotate freely relative to the movable component 200. The weft yarn bobbin is installed between the fixed connector and the movable connector. During the operation of the circular loom, the weft yarn bobbin rotates with the weft yarn unwinding. The connector 300 rotates synchronously with the weft yarn bobbin via the bearing, reducing the frictional resistance between the weft yarn bobbin and the connector 300 and ensuring smooth weft yarn unwinding. The connector 300 has a constricted section or a radial step section at its front end. The end of the central shaft hole of the weft yarn tube abuts against the constricted section or the radial step section to achieve axial positioning of the weft yarn tube.

[0039] The movable component 200 has a receiving cavity 201 at its rear end. The receiving cavity 201 is a cavity that opens axially inward from the rear end face of the movable component 200 to accommodate the elastic component 500 in whole or in part. The movable component 200 has a first fixing hole 202 at the receiving cavity 201 for fixing one end of the elastic component 500. The movable component 200 also has a connecting structure for connecting the operating component 400, specifically a fixing hole that opens radially.

[0040] Operating component 400 The operating component 400 is fixedly connected to the movable component 200 and extends radially. The operating component 400 and the movable component 200 are separate structures, facilitating the installation of the movable component 200 into the mounting hole 101 and the extension of the operating component 400 from the guide groove 600. The operating component 400 and the movable component 200 are fixedly connected, specifically by plug-in fixing or threaded connection. The separate structure allows the operating component 400 and the movable component 200 to be manufactured using different materials and processing techniques, facilitating their respective structural optimization. When the operating component 400 is damaged, it can be replaced individually without replacing the entire movable component 200. The operating component 400 passes through the guide groove 600 on the mounting base 100 and can slide within the guide groove 600. The sliding of the operating component 400 in the guide groove 600 drives the movable component 200 to move axially and rotate circumferentially within the mounting hole 101.

[0041] Elastic element 500 An elastic element 500 is disposed within the mounting hole 101 of the mounting base 100. One end of the elastic element 500 is connected to the movable element 200, and the other end is connected to the mounting base 100. It is used to apply axial elastic force and circumferential torque to the movable element 200. Part of the elastic element 500 is located in the receiving cavity 201 at the rear end of the movable element 200. The receiving cavity 201 provides installation space and protection for the elastic element, restricts the radial displacement of the elastic element, and ensures stable output of elastic force. The elastic element has ends at both axial ends, which are straight segments extending axially outward from both ends of the spring body. One straight segment is inserted and fixed in the first fixing hole 202 of the movable element 200, and the other straight segment is inserted and fixed in the second fixing hole 102 at the rear end of the mounting base 100. The installation method is simple and reliable, requiring no additional fasteners.

[0042] The elastic element provides two elastic forces simultaneously. An axial elastic force, along the axial direction of the mounting hole 101, applies an axial force to the movable element 200 towards the connector 300. A torsional force, around the axial direction of the movable element 200, applies a circumferential torsional moment to the movable element 200, causing the operating element 400 to abut against or tend to remain close to the abutment surface 604. The two elastic forces work together to ensure that the operating element 400 remains stably and correctly positioned on the abutment surface 604 or in the first groove section during operation.

[0043] Specific structure of guide groove 600 A guide groove 600 is formed on the curved top surface of the mounting base 100, extending through the wall thickness of the curved top surface and communicating with the mounting hole 101. The guide groove 600 includes a first groove segment 601 located near the connector 300, a second groove segment 602 located away from the connector 300, and a transition groove segment 603 connecting the first groove segment 601 and the second groove segment 602. The three groove segments are connected sequentially to form a complete motion guide path for the operating element 400.

[0044] The first groove section 601 is the area where the operating component 400 is located during normal operation of the circular loom. The first groove section 601 includes an axially extending abutment surface 604 and a limiting surface 605 connected to the abutment surface 604. The limiting surface 605 is located at the end of the abutment surface 604 away from the connector 300. The abutment surface 604 extends axially along the mounting base 100, and the limiting surface 605 may extend radially along the mounting base 100, forming an angle with the abutment surface 604, preferably perpendicular to it. The abutment surface 604 is preferably a flat surface, and the limiting surface 605 may be a flat surface or a rearwardly recessed arcuate surface.

[0045] The transition groove 603 connects the first groove 601 and the second groove 602. The transition groove 603 is an inclined groove, an arc-shaped groove, or a spiral groove, extending from the limiting surface 605 of the first groove 601 in a direction away from the connector 300 to the second groove 602. When changing the weft yarn bobbin, the operator moves the operating component 400, causing it to retract from the first groove 601 through the transition groove 603 into the second groove 602; after the change is completed, the operating component 400, under the action of the elastic component 500, returns to the first groove 601 through the transition groove 603.

[0046] A limiting angle 606 is provided between the limiting surface 605 and the transition groove section 603, and the limiting angle 606 is a sharp angle formed between the limiting surface 605 and the transition groove section 603. Alternatively, an anti-detachment protrusion can be provided between the limiting surface 605 and the transition groove section 603. The anti-detachment protrusion is a local protrusion at the connection between the limiting surface 605 and the transition groove section 603, forming a height difference between the two. During normal operation of the circular loom, the operating member 400 is located within the first groove section 601. Even if the operating member 400 moves to the position of the limiting surface 605 due to the axial thrust of the weft yarn cylinder, the anti-detachment protrusion and the limiting angle 606 can prevent the operating member 400 from accidentally sliding from the limiting surface 605 into the transition groove section 603, ensuring that the operating member 400 is always constrained within the working area of ​​the first groove section 601. This ensures the continuous effectiveness of the rigid limiting function of the limiting surface 605 and prevents the operating member 400 from leaving the working area and entering the replacement area due to vibration or external force.

[0047] The second groove 602 is a limiting groove section arranged radially or axially. The second groove 602 is used to accommodate and limit the operating member 400 when changing the weft yarn bobbin. The operator moves the operating member 400 along the transition groove 603 into the second groove 602, where the operating member 400 is limited. At this time, the movable member 200 is locked in the retracted position, the installation space between the two connectors 300 increases and remains stable, and the operator can freely pick up and put down the weft yarn bobbin with both hands without continuously applying force to keep the movable member 200 retracted. After the replacement is completed, the operating member 400 is removed from the second groove 602. Under the action of the elastic member 500, the operating member 400 returns to the first groove 601 via the transition groove 603, and the two connectors 300 re-clamp the weft yarn bobbin under the axial elastic force of the elastic member 500.

[0048] The axial length of the first groove segment 601 is adapted to the connection contact length between the weft bobbin and the connector 300. Preferably, the axial length of the first groove segment 601 is less than the connection contact length between the weft bobbin and the connector 300. When the weft bobbin is pushed backward along the abutment surface 604 by an axial thrust, sufficient connection contact length is maintained between the weft bobbin and the connector 300 before the operating member 400 reaches the limiting surface 605, preventing the weft bobbin from detaching. The limiting surface 605 acts as a final rigid limit, preventing the operating member 400 from continuing to move backward before the connection contact fails.

[0049] Overall work process During normal operation of the circular loom, the operating member 400 is located within the first groove section 601 of the guide groove 600. The elastic member 500 applies an axial elastic force and a circumferential torque to the movable member 200. The axial elastic force pushes the movable member 200 toward the connector 300, causing the connector 300 to press against the weft yarn bobbin. Simultaneously, the operating member 400 can be pressed against the abutment surface 604. The circumferential torque keeps the operating member 400 stably on the abutment surface 604 or tends to move closer to the abutment surface 604. The following describes the case where the circumferential torque keeps the operating member 400 stably on the abutment surface 604. When the weft yarn bobbin is subjected to the weft traction force, generating an axial component force, the first-stage limiting function comes into play: the friction between the operating member 400 and the abutment surface 604, along with the axial elastic force of the elastic member 500, jointly resist the axial thrust. When the axial thrust increases abnormally, causing the operating part 400 to move backward along the abutment surface 604 to the position of the limiting surface 605, the second-level rigid limiter comes into play: the limiting surface 605 directly blocks the operating part 400 from moving backward, ensuring that the weft yarn tube will not fall off.

[0050] When it is necessary to replace the weft bobbin, the operator moves the operating component 400 to overcome the axial elastic force and circumferential torque of the elastic component 500, allowing the operating component 400 to move from the first groove section 601 through the transition groove section 603 into the second groove section 602. The operating component 400 is confined within the second groove section 602, the movable component 200 is locked in the retracted position, and the connector 300 retracts accordingly, increasing the installation space between the two connectors 300. The operator removes the old weft bobbin and inserts the new one. After replacement, the operator moves the operating component 400 out of the second groove section 602. Under the elastic force of the elastic component, the operating component 400 automatically resets to the first groove section 601 through the transition groove section 603. Under the axial elastic force, the movable component 200 moves the connector 300 forward, clamping the new weft bobbin. The entire replacement process is simple, time-saving, and labor-saving.

[0051] It should be understood that the above embodiments are merely illustrative examples and are not intended to limit the invention. Based on the above embodiments, those skilled in the art can make appropriate adjustments and modifications to the specific shape and size of the mounting base 100, the length and diameter of the movable member 200, the shape and fixing method of the operating member 400, the specific shape, structure, and installation method of the elastic member 500, the specific shape and size of each segment of the guide groove 600, and the type and specifications of the rotating support member, according to actual application requirements. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of the claims of this invention should be included within the scope of protection of this invention.

Claims

1. A limiting installation structure for the weft yarn bobbin of a circular loom, characterized in that, include: Mounting base (100) has mounting holes (101) along the axial direction; The movable part (200) is inserted into the mounting hole (101) and can move axially and rotate circumferentially in the mounting hole (101). The end of the movable part (200) away from the mounting base (100) is provided with a connector (300) for connecting the weft yarn cylinder. The operating component (400) is fixedly connected to the movable component (200); An elastic element (500) is provided in the mounting hole (101). One end of the elastic element (500) is connected to the movable element (200), and the other end is connected to the mounting base (100). The elastic element (500) has axial elastic force and circumferential torsion. The mounting base (100) is provided with a guide groove (600), and the operating element (400) passes through the guide groove (600) and can slide in the guide groove (600); The guide groove (600) includes a first groove segment (601), a second groove segment (602) for limiting the retraction of the operating member (400), and a transition groove segment (603) connecting the first groove segment (601) and the second groove segment (602). The first groove segment (601) includes an axially extending abutment surface (604) and a limiting surface (605) connected to the abutment surface (604). The limiting surface (605) is located at the end of the abutment surface (604) away from the connector (300). The operating member (400) can abut against the abutment surface (604) or maintain a tendency to approach the abutment surface (604) under the circumferential torque of the elastic member (500). The limiting surface (605) is used to block and limit the operating member (400) when the moving member (200) moves axially against the axial elastic force of the elastic member (500).

2. The limiting installation structure for the weft yarn cylinder of a circular loom according to claim 1, characterized in that, The abutting surface (604) and the limiting surface (605) are set at an angle, and the angle between the abutting surface (604) and the limiting surface (605) is an acute angle, a right angle or an obtuse angle.

3. The limiting installation structure for the shuttle weft yarn cylinder of a circular loom according to claim 2, characterized in that, An anti-detachment protrusion and / or a limiting corner (606) are provided between the limiting surface (605) and the transition groove section (603) to prevent the operating component (400) from sliding from the limiting surface (605) into the transition groove section (603) during the operation of the circular loom.

4. The limiting installation structure for the weft yarn cylinder of a circular loom according to claim 1, characterized in that, The elastic element (500) has two ends extending axially, one end of which is fixedly connected to the movable element (200) and the other end of which is fixedly connected to the mounting base (100).

5. The limiting installation structure for the weft yarn cylinder of a circular loom according to claim 4, characterized in that, The rear end of the movable part (200) is provided with a receiving cavity (201), the elastic element is located in the receiving cavity (201), the movable part (200) is provided with a first fixing hole (202) at the receiving cavity (201), the rear end of the mounting base (100) is provided with a second fixing hole (102), and the two ends of the elastic element are respectively fixed in the first fixing hole (202) and the second fixing hole (102).

6. The limiting installation structure for the shuttle weft yarn cylinder of a circular loom according to claim 1, characterized in that, The operating component (400) and the movable component (200) are separate structures, and the operating component (400) and the movable component (200) are fixedly connected.

7. The limiting installation structure for the weft yarn cylinder of a circular loom according to claim 1, characterized in that, The second groove (602) is a limiting groove section set in the radial or axial direction.

8. The limiting installation structure for the shuttle weft yarn cylinder of a circular loom according to claim 1, characterized in that, The end of the movable part (200) is provided with a rotating support, and the connector (300) is rotatably sleeved on the movable part (200) through the rotating support.

9. The limiting installation structure for the shuttle weft yarn cylinder of a circular loom according to claim 1, characterized in that, The mounting base (100) is fixedly connected to the shuttle (700). The top surface of the mounting base (100) is an arc surface, and the guide groove (600) is opened on the arc surface and communicates with the mounting hole (101).

10. The limiting installation structure for the weft yarn cylinder of a circular loom according to claim 1, characterized in that, The axial length of the first groove section (601) is adapted to the connection contact length between the weft yarn bobbin and the connector (300), so that the weft yarn bobbin always maintains connection contact with the connector (300) before the operating member (400) abuts against the limiting surface (605).

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