Rotating shuttle stable in operation

Abstract

The utility model relates to the field of rotating shuttles, in particular to a stably-running rotating shuttle which comprises a shuttle race and a shuttle frame which are arranged in a relative rotation mode, a spindle of the shuttle frame is rotationally provided with a shuttle core, and the shuttle core and a shuttle core sleeve are axially pressed through an elastic assembly; the elastic assembly comprises a positioning ring and a pressing ring which are axially sleeved with each other in a penetrating mode. The positioning ring and the pressing ring can rotate relatively in the axial direction and keep relative positioning in the circumferential direction. An elastic piece is arranged between the positioning ring and the pressing ring, and elastic force is provided by the elastic piece to drive the pressing ring to abut against the shuttle peg, so that the pressing ring and the shuttle peg are relatively positioned in the circumferential direction; the positioning ring is rotationally connected to the shuttle peg sleeve; according to the rotating shuttle, relative rotation does not occur between the shuttle peg and the pressing ring, so that relative friction does not occur between the pressing ring and the shuttle peg and between the elastic piece and the shuttle peg, the elastic piece is not subjected to friction heating and abrasion of the shuttle peg, the elastic performance of the elastic piece is guaranteed, and the rotating shuttle can operate stably.

Description

Technical Field

[0001] This application relates to the field of rotary shuttles, and more particularly to a rotary shuttle that operates stably. Background Technology

[0002] A rotary shuttle mainly consists of a shuttle bed and a shuttle frame. Inside the shuttle frame is a bobbin for storing the bobbin thread, and a lock sleeve that covers the bobbin.

[0003] During operation, the shuttle bed rotates while the shuttle frame and the bobbin sleeve remain stationary. The bobbin is pulled to rotate circumferentially around the spindle of the shuttle frame. In related technologies, to prevent axial runout of the bobbin, a spring is usually placed between the bobbin sleeve and the bobbin to press the bobbin tightly, such as the rotary shuttle disclosed in announcement number CN221029014U.

[0004] However, in practical applications, since the bobbin is constantly rotating, it will continuously rub against the spring, causing the bobbin and the spring to generate heat and wear, thereby reducing the elasticity of the spring. As a result, the pressing effect of the spring on the bobbin is reduced, making the bobbin prone to axial runout, which is not conducive to the stable operation of the rotary hook. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a rotary shuttle with stable operation.

[0006] To achieve the above objectives, this application provides the following technical solution.

[0007] A stable rotary shuttle includes a shuttle bed and a shuttle frame that are rotatably arranged relative to each other. A bobbin sleeve is provided on the shuttle frame, and a bobbin is rotatably mounted on the spindle of the shuttle frame. The bobbin and the bobbin sleeve are axially pressed together by an elastic component. The elastic component includes a positioning ring and a pressure ring that are axially interlocked. The positioning ring and the pressure ring are rotatable relative to each other in the axial direction and maintain relative positioning in the circumferential direction. An elastic element is provided between the positioning ring and the pressure ring, providing elastic force to drive the pressure ring against the bobbin, thereby maintaining relative positioning of the pressure ring and the bobbin in the circumferential direction. The positioning ring is rotatably connected to the bobbin sleeve.

[0008] Compared with existing technologies, the advantages of this solution are:

[0009] In this design, when the bobbin rotates, it rotates along with the pressure ring and the elastic element. In other words, there is no relative rotation between the bobbin and the pressure ring. This prevents relative friction between the pressure ring and the bobbin, and between the elastic element and the bobbin. Consequently, the elastic element is not subjected to frictional heat and wear from the bobbin, thus ensuring its elastic performance and enabling the rotary hook to operate stably.

[0010] As an optional implementation of this application, in the circumferential direction, the pressure ring and the bobbin are kept in relative positioning by the friction between them.

[0011] As an optional embodiment of this application, a positioning component is provided between the pressure ring and the bobbin, so that the two are kept in relative position in the circumferential direction by the positioning component.

[0012] As an optional embodiment of this application, the positioning component includes a protrusion and a positioning hole for axial insertion of the protrusion, and the pressure ring includes a pressure plate portion that presses against the bobbin. The positioning hole and the protrusion are respectively provided on the pressure plate portion and the other on the bobbin. When the protrusion is inserted into the positioning hole, the pressure ring and the bobbin are kept relatively positioned in the circumferential direction.

[0013] As an optional embodiment of this application, the elastic element includes a spring and / or a sheet spring.

[0014] As an optional embodiment of this application, the positioning ring is rotatably mounted on the bobbin sleeve via a bearing.

[0015] As an optional embodiment of this application, one of the positioning ring and the pressure ring is provided with an axially extending convex key, and the other is provided with an axially extending keyway for the convex key to be inserted. Through the cooperation of the convex key and the keyway, the positioning ring and the pressure ring can rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction.

[0016] Other effects of this application are explained in detail in the Detailed Description and Drawings sections.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0019] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0020] Figure 1 A schematic diagram of the structure of this application is shown;

[0021] Figure 2 It shows Figure 1 Enlarged view of section A;

[0022] Figure 3 A schematic diagram of the structure of the elastic component of this application is shown;

[0023] Figure 4 An exploded view of the resilient component of this application is shown.

[0024] Explanation of the labels in the diagram:

[0025] 1. Shuttle bed;

[0026] 2. Shuttle frame; 21. Spindle;

[0027] 3. Hairpin; 31. Raised section;

[0028] 4. Shuttle sleeve; 41. Shaft sleeve;

[0029] 5. Elastic component; 51. Positioning ring; 511. Keyway; 52. Pressure ring; 521. Pressure plate; 522. Positioning hole; 523. Raised key; 53. Spring; 54. Bearing. Detailed Implementation

[0030] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-4 As shown, this embodiment provides a stable rotary shuttle, which mainly includes a shuttle frame 2, a shuttle bed 1, a shuttle core sleeve 4, and a shuttle core 3. The shuttle frame 2 is mounted on the shuttle bed 1, and the two can rotate relative to each other in the circumferential direction. The shuttle frame 2 is provided with a shuttle core sleeve 4. During operation, the shuttle bed 1 rotates, the shuttle frame 2 remains stationary, and the shuttle core sleeve 4 is fixed on the shuttle frame 2 and remains relatively stationary with the shuttle frame 2.

[0032] like Figure 1 As shown, the shuttle frame 2 has a spindle 21 at its center, and the bobbin sleeve 4 has a bushing 41 in the middle. The bobbin sleeve 4 is fixedly mounted on the spindle 21 of the shuttle frame 2 through the bushing 41, while the bobbin 3 is rotatably mounted on the bushing 41 of the bobbin sleeve 4.

[0033] The cross-section of the bobbin 3 is roughly "I" shaped. The bobbin 3 and the bobbin sleeve 4 are axially pressed together by the elastic component 5. That is, under the elastic pressure of the elastic component 5, the lower wall of the bobbin 3 abuts against the bottom wall of the shuttle frame 2 and rotates relative to the shuttle frame 2. Generally speaking, the bobbin 3 is wound with and stores the bobbin thread. During operation, as the sewn textile moves, the bobbin thread pulls the bobbin 3 to rotate.

[0034] In this embodiment, combined with Figure 2 and Figure 3 As shown, the elastic component 5 includes a positioning ring 51 and a pressure ring 52 that are axially interlocked. The positioning ring 51 and the pressure ring 52 can rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction. This relative positioning can be understood as the positioning ring 51 and the pressure ring 52 remaining relatively stationary in the circumferential direction, that is, rotating together synchronously.

[0035] In order to enable the positioning ring 51 and the pressure ring 52 to rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction, in some embodiments, one of the positioning ring 51 and the pressure ring 52 is provided with an axially extending protruding key 523, and the other is provided with an axially extending keyway 511 for the protruding key 523 to be inserted. Through the cooperation of the protruding key 523 and the keyway 511, the positioning ring 51 and the pressure ring 52 can rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction.

[0036] In this embodiment, the specific example shown is as follows: Figure 4 As shown, the pressure ring 52 is fitted onto the positioning ring 51, the protruding key 523 is provided on the inner peripheral wall of the pressure ring 52, and the keyway 511 is provided on the outer peripheral wall of the positioning ring 51. This allows the positioning ring 51 and the pressure ring 52 to rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction.

[0037] The positioning ring 51 is rotatably connected to the bobbin sleeve 4. In some embodiments, in order to make the positioning ring 51 rotate more smoothly relative to the bobbin sleeve 4, the positioning ring 51 is rotatably mounted on the bushing 41 of the bobbin sleeve 4 via a bearing 54.

[0038] An elastic element is provided between the positioning ring 51 and the pressure ring 52. The elastic element provides elastic force to drive the pressure ring 52 to press against the bobbin 3, so that the pressure ring 52 and the bobbin 3 are relatively positioned in the circumferential direction. That is, the pressure ring 52 rotates synchronously with the bobbin 3.

[0039] In some embodiments, the relative positioning of the pressure ring 52 and the bobbin 3 in the circumferential direction can be achieved by the friction between the pressure ring 52 and the bobbin 3. For example, a structure such as friction ridges or other structures that increase friction can be provided on the contact surfaces of the pressure ring 52 and the bobbin 3.

[0040] Of course, in some other alternative embodiments, the relative positioning of the pressure ring 52 and the bobbin 3 in the circumferential direction can also be, for example... Figure 2 As shown, a positioning component is provided between the pressure ring 52 and the bobbin 3, which keeps the two in relative position in the circumferential direction.

[0041] Specifically: the positioning component includes a protrusion 31 and a positioning hole 522 for axial insertion of the protrusion 31; the pressure ring 52 includes a pressure plate portion 521 that presses against the bobbin 3; the positioning hole 522 and the protrusion 31, one of which is provided on the pressure plate portion 521 and the other is provided on the bobbin 3; when the protrusion 31 is inserted into the positioning hole 522, the pressure ring 52 and the bobbin 3 maintain relative positioning in the circumferential direction.

[0042] In this embodiment, the protrusion 31 is specifically shown on the top wall of the bobbin 3, as shown below. Figure 4 As shown, the positioning hole 522 is provided on the pressure plate portion 521 of the pressure ring 52, wherein the protrusion 31 and the positioning hole 522 correspond one to one; the protrusion 31 can be one or more, and is arranged evenly along the top wall of the bobbin 3 in a circumferential direction.

[0043] The elastic element can be a spring 53 and / or a spring sheet. Taking spring 53 as an example, spring 53 is basically parallel to the axis of the rotary hook, and its two ends are fixed or abutted against the pressure ring 52 and the positioning ring 51 respectively. There can be one spring 53 or multiple springs arranged circumferentially between the pressure ring 52 and the positioning ring 51. Under the push of spring 53, the pressure plate part 521 of the pressure ring 52 presses against the top wall of the bobbin 3. After the protrusion 31 is inserted into the positioning hole 522, the bobbin 3 and the pressure ring 52 are positioned in the circumferential direction, so that the two rotate synchronously in the circumferential direction. That is, there will be no relative rotation between the bobbin 3 and the pressure ring 52. In this way, there will be no relative friction between the pressure ring 52 and the bobbin 3, and between the spring 53 and the bobbin 3. This prevents the spring 53 from being heated and worn by the friction of the bobbin 3, thus ensuring the elastic performance of the elastic element and enabling the rotary hook to operate stably.

[0044] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A stable rotary shuttle, comprising a shuttle bed and a shuttle frame rotatably arranged relative to each other, a shuttle core sleeve provided on the shuttle frame, a shuttle core rotatably disposed on the spindle of the shuttle frame, and the shuttle core and the shuttle core sleeve being axially pressed together by an elastic component; characterized in that, The elastic component includes a positioning ring and a pressure ring that are axially interlocked; the positioning ring and the pressure ring are axially rotatable relative to each other and maintain relative positioning in the circumferential direction; an elastic element is provided between the positioning ring and the pressure ring, and the elastic element provides elastic force to drive the pressure ring to press against the bobbin, so that the pressure ring and the bobbin maintain relative positioning in the circumferential direction; the positioning ring is rotatably connected to the bobbin sleeve.

2. The rotary shuttle with stable operation according to claim 1, characterized in that, In the circumferential direction, the pressure ring and the bobbin are kept in relative position by the friction between them.

3. The rotary shuttle with stable operation according to claim 1, characterized in that, A positioning component is provided between the pressure ring and the bobbin, which keeps them relatively positioned in the circumferential direction.

4. The rotary shuttle with stable operation according to claim 3, characterized in that, The positioning component includes a protrusion and a positioning hole for axial insertion of the protrusion. The pressure ring includes a pressure plate portion that presses against the bobbin. The positioning hole and the protrusion are respectively located on the pressure plate portion and on the bobbin. When the protrusion is inserted into the positioning hole, the pressure ring and the bobbin are kept relatively positioned in the circumferential direction.

5. The rotary shuttle with stable operation according to claim 1, characterized in that, The elastic element includes a spring and / or a sheet spring.

6. The rotary shuttle with stable operation according to claim 1, characterized in that, The positioning ring is rotatably mounted on the bobbin sleeve via a bearing.

7. The rotary shuttle with stable operation according to claim 1, characterized in that, The positioning ring and the pressure ring each have an axially extending convex key on one and an axially extending keyway on the other for the convex key to be inserted. Through the cooperation of the convex key and the keyway, the positioning ring and the pressure ring can rotate relative to each other in the axial direction and maintain relative positioning in the circumferential direction.

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