A rotary shuttle assembly

Abstract

This application relates to a rotary hook assembly, specifically within the technical field of sewing machine rotary hooks. It includes a shuttle housing, a shuttle bed, a drive shaft connecting cavity, mounting holes, fixing screws, a fixing component, and a shuttle frame. In this rotary hook assembly, the drive shaft connecting cavity is sleeved with the drive shaft, and the shuttle bed is fixed to the drive shaft by the fixing screws. This facilitates the rotation of the shuttle bed as the drive shaft rotates, enabling the assembly of the thread loops. The design of the fixing component effectively ensures the stability of the connection between the fixing screws and the drive shaft, thus effectively preventing the fixing screws from loosening due to the rotation of the drive shaft.

Description

Technical Field

[0001] This application relates to the technical field of sewing machine rotary hooks, and in particular to a rotary hook assembly. Background Technology

[0002] The rotary shuttle is an important component of the loom in the textile industry. It is primarily used in the weft insertion process, that is, shuttling back and forth between the warp yarns to carry the weft yarn through the warp threads, forming the fabric. Traditionally, this process was done manually by workers in hand weaving; however, with the advent of the Industrial Revolution, the mechanized rotary shuttle was invented and used, greatly increasing the speed and efficiency of weaving.

[0003] The related technology includes a shuttle bed and a rotary shuttle, with publication number CN212741783U. The shuttle bed includes: a shuttle body, comprising: a drive shaft connecting portion, a first side having a sealed first oil reservoir, and a drive shaft mounting position on a second side opposite to the first side; a crescent mounting portion connected to the first side of the drive shaft connecting portion; a shuttle skin mounting portion connected to the first side of the drive shaft connecting portion, forming a shuttle frame receiving cavity with the crescent mounting portion and the first side of the drive shaft connecting portion, and a second oil reservoir on the side away from the shuttle frame receiving cavity; a first oil passage, sealed inside the shuttle body, connecting the first oil reservoir and the second oil reservoir; a shuttle path, located within the shuttle frame receiving cavity; and an oil outlet passage located at a position opposite to the second oil reservoir and the shuttle path. This utility model embodiment effectively solves the problem of lubricating oil leakage caused by the use of an external oil supply method in the shuttle bed.

[0004] When the drive shaft connection of the shuttle bed in the above-mentioned technology is connected to the drive shaft of the sewing machine, it is often fixed by fixing screws. However, due to the rotation of the drive shaft, the fixing screws are prone to loosening during long-term use, thereby reducing the stability of the connection between the shuttle bed and the drive shaft. Utility Model Content

[0005] To address the issue that current shuttle drive shaft connections to sewing machine drive shafts often rely on fixing screws, which can easily loosen over time due to the rotation of the drive shaft, thus reducing the stability of the shuttle-drive shaft connection, this application provides a rotary hook assembly.

[0006] The rotary shuttle assembly provided in this application adopts the following technical solution: it includes a shuttle shell, a shuttle bed fixedly disposed at the middle position of the lower end face of the shuttle shell, a drive shaft connecting cavity disposed at the middle position of the shuttle bed, mounting holes evenly disposed on the shuttle bed and communicating with the drive shaft connecting cavity, fixing screws penetrating through each of the mounting holes and communicating with the drive shaft connecting cavity, fixing members disposed at the connection between each fixing screw and the mounting hole, and a shuttle frame disposed at the middle position of the shuttle shell.

[0007] By adopting the above technical solution, the drive shaft connecting cavity is sleeved with the drive shaft, and the shuttle is fixed on the drive shaft by the fixing screw, so that the shuttle can rotate with the rotation of the drive shaft to realize the composition of the wire ring; the design of the fixing part effectively ensures the stability of the connection between the fixing screw and the drive shaft, thereby effectively preventing the fixing screw from loosening due to the rotation of the drive shaft.

[0008] As a preferred embodiment, at least three mounting holes are provided, and each mounting hole is arranged circumferentially with the center of the shuttle bed as the center point.

[0009] By adopting the above technical solution, it is easy to fix the shuttle bed in all directions with fixing screws, thereby effectively ensuring the stability of the shuttle bed during installation.

[0010] As a preferred embodiment, the fastener includes a fixing seat disposed in each of the mounting holes, a first elastic sheet uniformly disposed on the outer periphery of the fixing seat and opposite one end of the mounting hole, a fixing ring sleeve slidably disposed on the fixing seat, a sliding groove disposed on the fixing seat and adapted to the fixing ring sleeve, a second elastic sheet uniformly disposed on the fixing ring sleeve opposite one end of the first elastic sheet, and a limiting pressure plate fixedly disposed on the other end of the fixing ring sleeve, wherein the fixing seat and the fixing ring sleeve are respectively sleeved on the outer periphery of the screw of the fixing screw.

[0011] By adopting the above technical solution, interference between the fixing screw and the fixing component during installation is avoided. Furthermore, the outer diameter of the fixing seat and the fixing ring is slightly smaller than the outer diameter of the screw head. When the fixing screw is installed, the screw head can easily press against the fixing component, facilitating the sliding of the fixing ring on the outer circumference of the fixing seat. This allows the second elastic plate to contact the first elastic plate, and the elastic force of the first and second elastic plates provides support for the screw head. This effectively ensures the stability of the connection between the fixing screw and the mounting hole, thus effectively preventing the fixing screw from loosening during long-term use.

[0012] As a preferred embodiment, each of the first elastic sheet is disposed relative to the second elastic sheet, and the first elastic sheet and the second elastic sheet are configured as elastic steel sheets.

[0013] The screw head is supported by the elastic force of the first and second elastic plates, which effectively ensures the stability of the connection between the fixing screw and the mounting hole.

[0014] As a preferred embodiment, the limiting pressure plate is circumferentially arranged with the center of the fixing ring as the center point, and the inner diameter of the limiting pressure plate is slightly larger than the outer diameter of the fixing seat.

[0015] The limiting pressure plate effectively ensures the contact surface between the screw head and the fastener, thereby effectively ensuring the squeezing force of the screw head on the fastener during installation.

[0016] As a preferred embodiment, the inner wall of the shuttle housing is provided with an annular groove, and the outer periphery of the shuttle frame is provided with an annular guide rail adapted to the annular groove, the annular guide rail and the annular groove being rotatably connected to each other.

[0017] By adopting the above technical solution, it is easier to guide the shuttle shell during rotation.

[0018] As a preferred embodiment, a de-threading hook is also provided on one side of the outer perimeter of the shuttle case, the de-threading hook being mounted on the shuttle case by a connecting screw.

[0019] By adopting the above technical solution, a crescent-shaped guide plate is used. Its functions are twofold: first, to press down the annular guide rail so that it matches the annular groove and prevents the shuttle frame from falling out of the shuttle case; second, to use its curved pointed tail to catch the thread loop that comes off the needle tip during the retraction of the needle thread loop, and to guide the thread loop when the thread take-up lever takes up the thread.

[0020] As a preferred embodiment, it further includes guide posts evenly arranged on the inner wall of the fixed ring and limiting grooves evenly arranged on the outer periphery of the sliding groove. Each guide post is fixedly connected to the fixed ring, and the end of the guide post away from the fixed ring is set as an arc shape.

[0021] By adopting the above technical solution, the guide post and the limiting groove complement each other, which facilitates the guidance of the fixed ring during the movement and avoids the deviation of the first elastic piece and the second elastic piece due to the rotation of the fixed screw.

[0022] In summary, this application includes the following beneficial technical effects: the drive shaft connecting cavity is sleeved with the drive shaft, and the shuttle is fixed on the drive shaft by a fixing screw, thereby facilitating the rotation of the shuttle with the rotation of the drive shaft to achieve the composition of the wire ring; when the fixing screw is installed, the screw head can easily squeeze the fixing part, thereby facilitating the sliding of the fixing ring on the outer circumference of the fixing seat, so that the second elastic plate contacts the first elastic plate, and the elastic force of the first elastic plate and the second elastic plate is used to support the screw head, effectively ensuring the stability of the connection between the fixing screw and the mounting hole, thereby effectively preventing the fixing screw from loosening during long-term use. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the overall structure of the rotary hook assembly of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the fixing component in the rotary hook assembly of this application when it is assembled with the fixing screw;

[0025] Figure 3 This is an exploded view of the fixing component in the rotary hook assembly of this application;

[0026] Figure 4 This is a structural diagram of the fixing component in the rotary hook assembly of this application during assembly;

[0027] Figure 5 It is in the rotary hook assembly of this application Figure 4 A structural schematic diagram of the enlarged view at point A.

[0028] Explanation of reference numerals in the attached drawings: 1. Shuttle case; 11. Annular groove; 2. Shuttle frame; 3. Shuttle bed; 31. Mounting hole; 4. Fixing screw; 5. Fixing element; 51. Fixing base; 511. Sliding groove; 5111. Limiting groove; 512. First elastic plate; 52. Fixing ring; 520. Limiting pressure plate; 521. Guide post; 522. Second elastic plate; 6. Thread release hook. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] See Figures 1 to 5This application discloses a rotary shuttle assembly. It includes a shuttle housing 1, a shuttle bed 3 fixedly disposed at the center of the lower end face of the shuttle housing 1, a drive shaft connecting cavity disposed at the center of the shuttle bed 3, mounting holes 31 evenly distributed on the shuttle bed 3 and communicating with the drive shaft connecting cavity, fixing screws 4 penetrating each mounting hole 31 and communicating with the drive shaft connecting cavity, fixing members 5 disposed at the connection point between each fixing screw 4 and the mounting hole 31, and a shuttle frame 2 disposed at the center of the shuttle housing 1. In this invention, the drive shaft connecting cavity is sleeved with the drive shaft, and the shuttle bed 3 is fixed to the drive shaft by the fixing screws 4, thereby facilitating the rotation of the shuttle bed 3 with the rotation of the drive shaft to achieve the assembly of the thread rings. The design of the fixing members 5 effectively ensures the stability of the connection between the fixing screws 4 and the drive shaft, thereby effectively preventing the fixing screws 4 from loosening due to the rotation of the drive shaft.

[0031] Please refer to the details. Figure 1 , Figure 2 and Figure 3 A rotary shuttle assembly includes a shuttle housing 1, a shuttle bed 3 fixedly disposed at the middle of the lower end face of the shuttle housing 1, a drive shaft connecting cavity disposed at the middle of the shuttle bed 3, and mounting holes 31 evenly disposed on the shuttle bed 3 and communicating with the drive shaft connecting cavity. There are at least three mounting holes 31, and each mounting hole 31 is circumferentially arranged with the center of the shuttle bed 3 as the center point, so as to facilitate the fixing screws 4 to fix the shuttle bed 3 in all directions, thereby effectively ensuring the stability of the shuttle bed 3 during installation.

[0032] Please refer to the details. Figure 3 , Figure 4 and Figure 5The mounting holes 31 are filled with fixing screws 4 that pass through each of the mounting holes 31 and communicate with the drive shaft connection cavity. Fixing members 5 are provided at the connection points between each fixing screw 4 and the mounting hole 31. The fixing member 5 includes a fixing seat 51 provided in each mounting hole 31, a first elastic piece 512 evenly distributed around the outer periphery of the fixing seat 51 and opposite one end of the mounting hole 31, a fixing ring 52 slidably disposed on the fixing seat 51, a sliding groove 511 on the fixing seat 51 that matches the fixing ring 52, a second elastic piece 522 evenly distributed on one end of the fixing ring 52 opposite to the first elastic piece 512, and a limiting pressure plate 520 fixedly disposed at the other end of the fixing ring 52. The fixing seat 51 and the fixing ring 52 are also present. The fixing screws 4 and 52 are respectively fitted around the outer circumference of the screw shaft, which avoids positional interference between the fixing screw 4 and the fixing member 5 during installation. The outer diameter of the fixing seat 51 and the fixing ring 52 is slightly smaller than the outer diameter of the screw head of the fixing screw 4. When the fixing screw 4 is installed, it is easy for the screw head to squeeze the fixing member 5, thereby facilitating the sliding of the fixing ring 52 on the outer circumference of the fixing seat 51. This allows the second elastic plate 522 to contact the first elastic plate 512. The elasticity of the first elastic plate 512 and the second elastic plate 522 provides support for the screw head, effectively ensuring the stability of the connection between the fixing screw 4 and the mounting hole 31, and thus effectively preventing the fixing screw 4 from loosening during long-term use.

[0033] Please refer to the details. Figure 3 , Figure 4 and Figure 5 Each first elastic piece 512 is positioned relative to the second elastic piece 522, and the first elastic piece 512 and the second elastic piece 522 are made of elastic steel sheets. The elastic force of the first elastic piece 512 and the second elastic piece 522 is used to support the screw head, effectively ensuring the stability of the connection between the fixing screw 4 and the mounting hole 31.

[0034] Please refer to the details. Figure 2 and Figure 3 The limiting pressure plate 520 is circumferentially set with the center of the fixing ring 52 as the center point, and the inner diameter of the limiting pressure plate 520 is slightly larger than the outer diameter of the fixing seat 51. The limiting pressure plate 520 effectively ensures the contact surface between the screw head and the fixing part 5, thereby effectively ensuring the squeezing force of the screw head on the fixing part 5 during the installation process.

[0035] Please refer to the details. Figure 1 and Figure 2 The shuttle frame 2, located in the middle of the shuttle housing 1, has an annular groove 11 on its inner wall to facilitate the guidance of the shuttle housing 1 during rotation. The outer periphery of the shuttle frame 2 is provided with an annular guide rail that matches the annular groove 11. The annular guide rail and the annular groove 11 are rotatably connected to each other, thereby facilitating the guidance of the shuttle housing 1 during rotation.

[0036] Please refer to the details. Figure 1 and Figure 2 To prevent the annular guide rail from detaching from the annular groove 11, a thread-removing hook 6 is also provided on one side of the outer circumference of the shuttle case 1. The thread-removing hook 6 is set on the shuttle case 1 by connecting screws and is a crescent-shaped guide plate. Its functions are twofold: first, to press down the annular guide rail so that it cooperates with the annular groove 11 to prevent the shuttle frame 2 from falling out of the shuttle case 1; and second, to use its curved pointed tail to catch the thread loop that comes off the needle tip during the retraction of the needle thread loop, and to guide the thread loop when the thread take-up lever takes up the thread.

[0037] Please refer to the details. Figure 4 and Figure 5 To prevent the first elastic piece 512 and the second elastic piece 522 from deviating due to the rotation of the fixing screw 4, the fixed ring 52 also includes guide posts 521 evenly distributed on the inner wall of the fixed ring 52 and limiting grooves 5111 evenly distributed on the outer periphery of the sliding groove 511. Each guide post 521 is fixedly connected to the fixed ring 52, and the end of the guide post 521 away from the fixed ring 52 is set as an arc. The guide post 521 and the limiting groove 5111 complement each other, which facilitates the guidance of the fixed ring 52 during movement and prevents the first elastic piece 512 and the second elastic piece 522 from deviating due to the rotation of the fixing screw 4.

[0038] The implementation principle of a rotary shuttle assembly in this application embodiment is as follows: During use, the drive shaft connecting cavity is sleeved with the drive shaft, and the shuttle bed 3 is fixed to the drive shaft by the fixing screw 4, thereby facilitating the rotation of the shuttle bed 3 with the rotation of the drive shaft to achieve the composition of the wire ring.

[0039] When the fixing screw 4 is installed, the screw head can easily press against the fixing member 5, thereby facilitating the sliding of the fixing ring 52 on the outer periphery of the fixing seat 51. This allows the second elastic plate 522 to contact the first elastic plate 512, and the elastic force of the first elastic plate 512 and the second elastic plate 522 can support the screw head, effectively ensuring the stability of the connection between the fixing screw 4 and the mounting hole 31, thus effectively preventing the fixing screw 4 from loosening during long-term use.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary hook assembly characterized by: It includes a shuttle shell (1), a shuttle bed (3) fixedly disposed at the middle position of the lower end face of the shuttle shell (1), a drive shaft connecting cavity disposed at the middle position of the shuttle bed (3), mounting holes (31) evenly disposed on the shuttle bed (3) and communicating with the drive shaft connecting cavity, fixing screws (4) penetrating through each of the mounting holes (31) and communicating with the drive shaft connecting cavity, fixing members (5) disposed at the connection between each fixing screw (4) and the mounting hole (31), and a shuttle frame (2) disposed at the middle position of the shuttle shell (1).

2. A rotary hook assembly according to claim 1, wherein: The mounting holes (31) are at least three in number, and each mounting hole (31) is circumferentially arranged with the center of the shuttle bed (3) as the center point.

3. A rotary hook assembly according to claim 2, wherein: The fastener (5) includes a fixing seat (51) disposed in each of the mounting holes (31), a first elastic piece (512) evenly disposed on the outer periphery of the fixing seat (51) and opposite to one end of the mounting hole (31), a fixing ring (52) slidably disposed on the fixing seat (51), a sliding groove (511) disposed on the fixing seat (51) and adapted to the fixing ring (52), a second elastic piece (522) evenly disposed on one end of the fixing ring (52) opposite to the first elastic piece (512), and a limiting pressure plate (520) fixedly disposed on the other end of the fixing ring (52).

4. A rotary hook assembly according to claim 3, wherein: The fixing seat (51) and the fixing ring (52) are respectively fitted around the outer circumference of the screw of the fixing screw (4), and the outer diameter of the fixing seat (51) and the fixing ring (52) is slightly smaller than the outer diameter of the screw head of the fixing screw (4).

5. A rotary hook assembly according to claim 4, wherein: Each of the first elastic sheet (512) is disposed relative to the second elastic sheet (522), and the first elastic sheet (512) and the second elastic sheet (522) are configured as elastic steel sheets.

6. A rotary hook assembly according to claim 5, wherein: The limiting pressure plate (520) is circumferentially arranged with the center of the fixing ring (52) as the center point, and the inner diameter of the limiting pressure plate (520) is slightly larger than the outer diameter of the fixing seat (51).

7. A rotary hook assembly according to claim 6, wherein: The inner wall of the shuttle housing (1) is provided with an annular groove (11), and the outer periphery of the shuttle frame (2) is provided with an annular guide rail that is adapted to the annular groove (11). The annular guide rail and the annular groove (11) are rotatably connected to each other.

8. A rotary hook assembly according to claim 7, characterized in that: It also includes a de-thread hook (6) disposed on one side of the outer periphery of the shuttle housing (1), the de-thread hook (6) being disposed on the shuttle housing (1) by means of a connecting screw.

9. A rotary hook assembly according to claim 8, wherein: It also includes guide posts (521) evenly arranged on the inner wall of the fixed ring (52) and limiting grooves (5111) evenly arranged on the outer periphery of the sliding groove (511). Each guide post (521) is fixedly connected to the fixed ring (52), and the end of the guide post (521) away from the fixed ring (52) is set as an arc shape.

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