Rotating shuttle adjusting assembly and sewing machine

Abstract

The utility model relates to a rotating shuttle adjusting assembly and a sewing machine, and the rotating shuttle adjusting assembly comprises an axial adjusting motor structure; the output end of the axial adjusting motor structure is matched with the screw transmission structure; the screw transmission structure is connected with the rotating shuttle shaft structure so as to drive the rotating shuttle shaft structure to move in the axial direction of the rotating shuttle shaft structure. According to the technical scheme, the problem that in the prior art, when to-be-sewn objects with different thicknesses are switched, a machine needle of a sewing machine is prone to being broken is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and in particular to a rotary hook adjustment assembly and a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewn together. Sewing machines include sewing machines, stitching machines, embroidery machines, and quilting machines.

[0003] The sewing work of the sewing machine is mainly completed by the cooperation of the needle and the rotary shuttle. Due to different sewing conditions, the sewing machine needs to use needles of different sizes to operate. When the fabric is thicker, it is necessary to replace the needle with a thicker diameter, and when the fabric is thinner, it is necessary to replace the needle with a thinner diameter. In this way, when the work with a thinner needle is completed and replaced with a thicker needle, the needle is easy to collide with the rotary shuttle and break. Utility Model Content

[0004] The present application provides a rotary hook adjustment component and a sewing machine to solve the problem in the prior art that the needle of the sewing machine is easily broken when switching between sewing objects of different thicknesses.

[0005] A rotary hook adjustment assembly provided in the present application includes: an axial adjustment motor structure; a screw transmission structure, the output end of the axial adjustment motor structure cooperates with the screw transmission structure; a rotary hook shaft structure, the screw transmission structure is connected to the rotary hook shaft structure to drive the rotary hook shaft structure to move axially along the rotary hook shaft structure.

[0006] Furthermore, the screw transmission structure includes a threaded rod and a translation conversion component, the translation conversion component has a threaded hole, and the threaded rod and the translation conversion component are rotatably connected through the threaded hole.

[0007] Furthermore, the translation conversion component includes a connecting plate and a threaded barrel, the connecting plate has a mounting hole, the threaded hole is installed in the mounting hole, and the threaded rod is rotatably installed in the threaded barrel.

[0008] Furthermore, the rotary hook shaft structure includes a matching plate and a rotary hook shaft, the rotary hook shaft is connected to the matching plate, the matching plate and the connecting plate are arranged at intervals, and the matching plate and the connecting plate are connected.

[0009] Furthermore, the screw transmission structure also includes a linkage component, which is connected to the connecting plate and the matching plate.

[0010] Furthermore, the linkage component includes a linkage rod, and two ends of the linkage rod are respectively connected to the connecting plate and the matching plate.

[0011] Furthermore, the screw transmission structure also includes a limiting component, and both the connecting plate and the matching plate can be matched with the limiting component in an axially movable manner along the threaded rod.

[0012] Furthermore, the rotary hook shaft structure also includes a spline shaft sleeve, and the rotary hook shaft includes a spline shaft section matched with the spline shaft sleeve.

[0013] Furthermore, the axial adjustment motor structure includes an axial drive motor, a driving gear, a transmission gear and a driven gear. The driving gear is installed at the output end of the axial drive motor, and the driven gear is installed on the screw transmission structure. The driving gear cooperates with the driven gear through the transmission gear, and the transmission gear is made of non-metallic material.

[0014] According to another aspect of the present application, a sewing machine is further provided. The sewing machine includes a sewing machine body and a rotary hook adjustment assembly adapted to the sewing machine body. The rotary hook adjustment assembly is the above-mentioned rotary hook adjustment assembly.

[0015] By applying the technical solution of the present application, the motor structure is axially adjusted to drive the screw transmission structure, which converts rotation into translation and drives the shuttle shaft structure to move axially along the shuttle shaft structure. The transmission of the screw transmission structure is relatively smooth, and the moving position is controllable. By moving the shuttle shaft structure along the axial direction of the shuttle shaft structure, the position between the shuttle and the needle is changed, which can effectively avoid damage to the needle. The technical solution of the present application effectively solves the problem in the prior art that the needle is easily broken when the sewing machine switches between sewing objects of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the rotary hook adjustment assembly of the first embodiment of the present application is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the rotary hook adjustment assembly from another angle;

[0020] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the hook shaft of the hook adjustment assembly.

[0021] The above drawings include the following reference numerals:

[0022] 10. Axial adjustment motor structure; 11. Axial drive motor; 12. Driving gear; 13. Transmission gear; 14. Driven gear; 20. Screw transmission structure; 21. Threaded rod; 22. Connecting plate; 23. Threaded barrel; 24. Linkage component; 25. Limit component; 30. Rotary hook shaft structure; 31. Matching plate; 32. Rotary hook shaft; 33. Spline bushing. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0026] like Figure 1 As shown, the rotary hook adjustment assembly of the first embodiment includes: an axial adjustment motor structure 10, a screw transmission structure 20 and a rotary hook shaft structure 30. The output end of the axial adjustment motor structure 10 cooperates with the screw transmission structure 20. The screw transmission structure 20 is connected to the rotary hook shaft structure 30 to drive the rotary hook shaft structure 30 to move along the axial direction of the rotary hook shaft structure 30.

[0027] The technical solution of the first embodiment is applied, and the motor structure 10 is axially adjusted to drive the screw transmission structure 20, and the screw transmission structure 20 converts the rotation into translation, and drives the rotary shuttle shaft structure 30 to move along the axial direction of the rotary shuttle shaft structure 30. The transmission of the screw transmission structure 20 is relatively smooth, and the moving position is controllable. By moving the rotary shuttle shaft structure 30 along the axial direction of the rotary shuttle shaft structure 30, the position between the rotary shuttle and the needle can be changed (can be closer or farther), which can effectively avoid damaging the needle. The technical solution of this embodiment effectively solves the problem that the needle of the sewing machine in the prior art is easy to break when switching between sewing objects of different thicknesses.

[0028] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the screw transmission structure 20 includes a threaded rod 21 and a translation conversion component, the translation conversion component has a threaded hole, and the threaded rod 21 and the translation conversion component are rotatably connected through the threaded hole. The above structure is compact and easy to operate.

[0029] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the translation conversion component includes a connecting plate 22 and a threaded barrel 23, the connecting plate 22 has a mounting hole, the threaded hole is installed in the mounting hole, and the threaded rod 21 is rotatably installed in the threaded barrel 23. By setting the structure of the threaded barrel 23, the matching length of the threaded rod 21 and the threaded barrel 23 is larger, so that the transmission stability is better. It should be noted that the connection between the connecting plate 22 and the threaded barrel 23 can be connected by interference fit, welding, fastener connection, etc.

[0030] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the rotary hook shaft structure 30 includes a matching plate 31 and a rotary hook shaft 32, the rotary hook shaft 32 is connected to the matching plate 31, the matching plate 31 and the connecting plate 22 are arranged at intervals, and the matching plate 31 is connected to the connecting plate 22. The arrangement of the matching plate 31 facilitates the connection between the rotary hook shaft 32 and the connecting plate 22. It should be noted that in the technical solution of this embodiment, the matching plate 31 and the connecting plate 22 are plates of the same shape, the matching plate 31 and the connecting plate 22 are arranged in parallel, and the plane of the connecting plate 22 is perpendicular to the axis of the threaded rod 21.

[0031] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the screw transmission structure 20 further includes a linkage component 24, and the linkage component 24 is connected to the connecting plate 22 and the matching plate 31. The setting of the linkage component 24 can satisfy the traction and driving of the connecting plate 22 on the matching plate 31.

[0032] like Figure 1 and Figure 2As shown, in the technical solution of the first embodiment, the linkage component 24 includes a linkage rod, and the two ends of the linkage rod are respectively connected to the connecting plate 22 and the matching plate 31. The above structure is simple to set up and easy to operate. Both ends of the linkage rod are threaded, and the linkage rod passes through the connecting plate 22 and the matching plate 31. Nuts are provided on both sides of the connecting plate 22, and nuts are provided on both sides of the matching plate 31. Four nuts correspond to one linkage rod. Such a structure is easy to disassemble and assemble, and the operation is simple. It should be noted that there are two linkage rods, and the two linkage rods are symmetrically arranged on both sides of the threaded rod 21, so that the force on the rotary hook shaft structure 30 is relatively balanced when it moves horizontally.

[0033] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the screw transmission structure 20 also includes a limiting component 25, and both the connecting plate 22 and the matching plate 31 can cooperate with the limiting component 25 along the axial movement of the threaded rod 21. The setting of the limiting component 25 prevents the connecting plate 22 and the matching plate 31 from rotating on the one hand, and ensures that the connecting plate 22 and the matching plate 31 can move horizontally along a predetermined trajectory on the other hand. It should be noted that the limiting component 25 is a limiting rod, and the connecting plate 22 and the matching plate 31 are both provided with limiting holes, and the limiting rod is inserted into the limiting hole of the connecting plate 22 and the limiting hole of the matching plate 31. The limiting rod is a light rod, and the limiting hole is a light hole with a diameter slightly larger than that of the limiting rod. There are two limit rods, which are symmetrically arranged on both sides of the threaded rod 21, so that the force between the connecting plate 22 and the matching plate 31 is relatively balanced. The two limit rods are connected to the sewing machine body. Such a structure can limit the rotation of the connecting plate 22, that is, by limiting the connecting plate 22, the rotation of the screw rod is converted into the translational motion of the connecting plate 22.

[0034] like Figures 1 to 3 As shown, in the technical solution of the first embodiment, the rotary hook shaft structure 30 further includes a spline shaft sleeve 33, and the rotary hook shaft 32 includes a spline shaft section adapted to the spline shaft sleeve 33. The spline shaft sleeve 33 is provided to satisfy the relative axial movement between the rotary hook shaft 32 and the spline shaft sleeve 33, and also to satisfy the rotary hook shaft 32 to drive the rotation of the spline shaft sleeve 33. It is convenient to set the cam and drive the feed dog assembly and other structures in the subsequent process.

[0035] like Figure 1 and Figure 2As shown, in the technical solution of the first embodiment, the axial adjustment motor structure 10 includes an axial drive motor 11, a driving gear 12, a transmission gear 13 and a driven gear 14, the driving gear 12 is installed at the output end of the axial drive motor 11, the driven gear 14 is installed on the screw transmission structure 20, the driving gear 12 is matched with the driven gear 14 through the transmission gear 13, and the transmission gear 13 is made of non-metallic material. The gear transmission is relatively stable and controllable. The transmission gear 13 is made of non-metallic material, so that the axial adjustment motor structure 10 has less noise when running. The material of the transmission gear 13 can be speed, rubber, silicone and other materials.

[0036] The difference between the technical solution of the second embodiment and the technical solution of the first embodiment is that the structure of the matching plate 31 can be a matching rod, and the connecting plate and the matching rod can also be connected.

[0037] The technical solution of embodiment 3 differs from the technical solution of embodiment 1 in that the hook shaft 32 is connected to the matching plate 31 through a hook sleeve, the matching plate 31 has a mounting hole in the middle, the hook sleeve is connected to the matching plate 31 (can be welded or interference fit), the hook sleeve and the hook shaft 32 are connected by a fastening screw, that is, the hook sleeve and the hook shaft both have a screw hole, and the fastening screw is installed in the screw hole.

[0038] The present application also provides a sewing machine, which includes a sewing machine body and a rotary hook adjustment component adapted to the sewing machine body, and the rotary hook adjustment component is the above-mentioned rotary hook adjustment component.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary hook adjustment assembly, characterized in that: include: Axially adjusting the motor structure (10); A screw transmission structure (20), wherein the output end of the axial adjustment motor structure (10) cooperates with the screw transmission structure (20); A rotary shuttle shaft structure (30), wherein the screw transmission structure (20) is connected to the rotary shuttle shaft structure (30) to drive the rotary shuttle shaft structure (30) to move along the axial direction of the rotary shuttle shaft structure (30).

2. The rotary hook adjustment assembly according to claim 1, characterized in that: The screw transmission structure (20) comprises a threaded rod (21) and a translation conversion component, wherein the translation conversion component has a threaded hole, and the threaded rod (21) and the translation conversion component are rotatably connected via the threaded hole.

3. The rotary hook adjustment assembly according to claim 2, characterized in that: The translation conversion component comprises a connecting plate (22) and a threaded barrel (23), wherein the connecting plate (22) has a mounting hole, the threaded hole is mounted in the mounting hole, and the threaded rod (21) is rotatably mounted in the threaded barrel (23).

4. The rotary hook adjustment assembly according to claim 3, characterized in that: The rotary hook shaft structure (30) comprises a matching plate (31) and a rotary hook shaft (32); the rotary hook shaft (32) is connected to the matching plate (31); the matching plate (31) and the connecting plate (22) are arranged at intervals; and the matching plate (31) and the connecting plate (22) are connected.

5. The rotary hook adjustment assembly according to claim 4, characterized in that: The screw transmission structure (20) further comprises a linkage component (24), wherein the linkage component (24) is connected to the connecting plate (22) and the matching plate (31).

6. The rotary hook adjustment assembly according to claim 5, characterized in that: The linkage component (24) comprises a linkage rod, and two ends of the linkage rod are respectively connected to the connecting plate (22) and the matching plate (31).

7. The rotary hook adjustment assembly according to claim 4, characterized in that: The screw transmission structure (20) further comprises a limiting component (25), and both the connecting plate (22) and the matching plate (31) can match with the limiting component (25) in an axially movable manner along the threaded rod (21).

8. The rotary hook adjustment assembly according to claim 4, characterized in that: The rotary hook shaft structure (30) further comprises a spline shaft sleeve (33), and the rotary hook shaft (32) comprises a spline shaft section adapted to the spline shaft sleeve (33).

9. The hook adjustment assembly according to any one of claims 1 to 8, characterized in that: The axial adjustment motor structure (10) comprises an axial drive motor (11), a driving gear (12), a transmission gear (13) and a driven gear (14); the driving gear (12) is mounted on the output end of the axial drive motor (11); the driven gear (14) is mounted on the screw transmission structure (20); the driving gear (12) cooperates with the driven gear (14) through the transmission gear (13); and the transmission gear (13) is made of non-metallic material.

10. A sewing machine, characterized in that: The sewing machine comprises a sewing machine body and a rotary hook adjustment assembly adapted to the sewing machine body, and the rotary hook adjustment assembly is the rotary hook adjustment assembly according to any one of claims 1 to 9.

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