Sock turning mechanism of sock end sewing machine

Abstract

The invention relates to the technical field of sock turning, and discloses a sock turning mechanism of a sock end sewing machine, which comprises a bottom plate, the right side of the top of the bottom plate is fixedly connected with a bearing plate, the middle end of the top of the bearing plate is fixedly connected with a blowing device, and the left side of the top of the bottom plate is fixedly connected with two groups of supporting legs; threaded rods are arranged on the sides, close to the bearing plate, of the two supporting legs, the sides, close to the bearing plate, of the two threaded rods are fixedly connected with the supporting legs, the left sides of the two threaded rods are fixedly connected with the supporting legs, a motor is installed on the left side of the supporting leg located on the front side, and the output end of the motor is fixedly connected with the threaded rods. The outer walls of the two sets of threaded rods are in threaded connection with sliding blocks. According to the sock fixing device, by arranging the fixing mechanism, when socks are fixed, the fixing mechanism can flexibly move to the matched position and then conduct fixing, universality and adaptability are improved, and fixing can be accurately and effectively completed even if the socks are different in length.

Description

Technical Field

[0001] The invention relates to the technical field of sock turning, in particular to a sock turning mechanism of a sock toe sewing machine. Background Art

[0002] The sock turning function of the sock toe sewing machine is mainly to turn the socks from the inside out or from the outside in during or after the sock toe sewing process. This is an important link in the sock production process. After the socks are sewn, the socks are often facing outward. The sock turning operation can make the socks face outward, presenting the appearance of the final sales.

[0003] The patent application with application number CN202323001035.0 discloses an automatic sock turning mechanism for sock toe sewing, including a working base plate and a sock toe sewing equipment body, an operating platform is provided on the sock toe sewing equipment body, an equipment frame is installed above the working base plate, a telescopic component is provided on the equipment frame, a moving block is connected to one end of the telescopic component, and a turning shaft is rotatably installed on one side of the moving block.

[0004] The sock turning machines currently on the market have certain limitations in their operation. When handling socks of different lengths, their hooks are unable to accurately and effectively turn the socks over completely, making it difficult to flatten the socks after turning them over. This problem directly leads to position deviations of the socks in the subsequent sewing process, which in turn affects the quality of the product. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a sock turning mechanism for a sock toe sewing machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sock turning mechanism of a sock toe sewing machine, comprising a bottom plate, a load-bearing plate fixedly connected to the right side of the top of the bottom plate, a blowing device fixedly connected to the middle end of the top of the load-bearing plate, two groups of supporting legs fixedly connected to the left side of the top of the bottom plate, threaded rods are arranged on the sides of the two groups of supporting legs close to the load-bearing plate, the two groups of threaded rods are fixedly connected to the sides of the two groups of threaded rods close to the load-bearing plate, the left sides of the two groups of threaded rods are fixedly connected to the supporting legs, a motor is installed on the left side of the supporting leg located on the front side, the output end of the motor is fixedly connected to the threaded rod, the outer walls of the two groups of threaded rods are threadedly connected to sliding blocks, and the top of the bottom plate is fixedly connected to a sock sewing device, comprising:

[0007] A fixing mechanism, the fixing mechanism includes a sliding ring, a side of the sliding ring close to the sliding block is connected to the threaded rod, a side of the sliding ring away from the threaded rod is fixedly connected to a first telescopic rod, a side of the first telescopic rod away from the sliding ring is fixedly connected to a pressing block, a side of the pressing block away from the threaded rod is provided with a fitting block, a side of the fitting block close to the pressing block is provided with a groove, a groove wall is rotatably connected to a rotating plate via a first rotating shaft, the fixing mechanism is provided with two groups and are symmetrically arranged with the middle of the bottom plate as the center, and the rotating block is used to fit with the inner wall of the sock.

[0008] According to the above technical solution, a first connecting plate is fixedly connected to the right side of the pressing block, a first spring is fixedly connected to the side of the first connecting plate away from the sliding ring, a second connecting plate is fixedly connected to the side of the first spring away from the first connecting plate, and a fitting block is fixedly connected to the side of the second connecting plate close to the pressing block, and the first spring is used to pull the pressing block closer to the fitting block.

[0009] According to the above technical solution, it also includes a smoothing mechanism, which includes a base. The bottom of the base is fixedly connected to the sock sewing device, and the top of the base is rotatably connected to a rotating block via a second rotating shaft. The rotating block is used to adjust the angle of the smoothing mechanism.

[0010] According to the above technical solution, a second telescopic rod is fixedly connected to a side of the rotating block close to the sliding block, and a curved block is fixedly connected to a side of the second telescopic rod away from the rotating block. The second telescopic rod is used to pull the curved block to move.

[0011] According to the above technical solution, the side of the second telescopic rod close to the arc block is rotatably connected to the support rod through the third rotating shaft, a second spring is arranged at the bottom of the arc block, and the side of the second spring close to the support rod is fixedly connected to it, and the second support rod is used to fix the position of the arc block.

[0012] According to the above technical solution, the side of the second spring away from the support rod is fixedly connected to the middle end of the bottom of the arc block, and the side of the bottom of the arc block away from the second spring is fixedly connected with a hook plate, which is used to smooth out wrinkles on the surface of the socks.

[0013] According to the above technical solution, an elastic rope is fixedly connected to the top of the arc block, and the side of the elastic rope away from the arc block is fixedly connected to the top of the rotating block. The elastic rope is used to pull the second telescopic rod to reset.

[0014] According to the above technical solution, it also includes a reset mechanism, which includes a curved rod, the bottom of the curved rod is fixedly connected to the top of the base, a sliding rod is arranged inside the top of the curved rod, the front and back sides of the sliding rod are fixedly connected to the inner wall of the curved rod, a moving ring is sleeved on the outer wall of the sliding rod, a third spring is arranged on the side of the moving ring close to the inner wall of the curved rod, the side of the third spring close to the moving ring is fixedly connected to it, and the moving ring is used to press the third spring.

[0015] According to the above technical solution, the side of the third spring close to the curved rod is fixedly connected to the inner wall of the curved rod, the bottom of the moving ring is fixedly connected to a pull rope, and the side of the pull rope away from the moving ring is fixedly connected to the top of the rotating block. The moving ring, the third spring and the pull rope are arranged in two groups and are symmetrically arranged with the middle part of the curved rod as the center. The pull rope is used to pull the moving ring to move.

[0016] Compared with the prior art, the present invention provides a sock turning mechanism of a sock toe sewing machine, which has the following features:

[0017] Beneficial effects:

[0018] 1. The present invention provides a fixing mechanism, which can be flexibly moved to a fitting position for fixing the socks, thereby increasing versatility and adaptability. Even when facing socks of different lengths, the fixing can be completed accurately and effectively.

[0019] 2. The present invention sets a rotating plate and utilizes the elasticity of the elastic band on the edge of the socks to squeeze the rotating plate, so that the rotating plate is closely attached to the surface of the socks. During this process, the pressing block will also simultaneously apply pressure to the outside of the socks. Under the dual effect, the fixing force of the socks is enhanced. This ingenious design ensures that the socks can be firmly fixed during the sock turning operation, effectively preventing them from falling off accidentally.

[0020] 3. The present invention provides a smoothing mechanism. Once the socks turning process is completed, the mechanism will immediately take effect and accurately straighten the socks. In this way, when the socks head is subsequently sewn, wrinkles on the socks and contact with the sock head can be effectively avoided, thereby eliminating sewing errors caused by wrinkles.

[0021] 4. The present invention is provided with a reset mechanism, and its subtlety lies in that when the socks sewing process is completed, the reset mechanism is immediately started, accurately driving the smoothing mechanism back to the initial position, ensuring that it automatically enters a working ready state, and no manual adjustment intervention is required throughout the process, which greatly improves work efficiency and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the pressing block of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the rotating plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the sock sewing device of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the smoothing mechanism of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the support rod of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the reset mechanism of the present invention.

[0030] In the figure: 1, bottom plate; 2, load-bearing plate; 3, blowing device; 4, sliding block; 5, threaded rod; 6, supporting leg; 7, motor; 8, sock sewing device; 9, fixing mechanism; 901, sliding ring; 902, pressing block; 903, first telescopic rod; 904, first connecting plate; 905, second connecting plate; 906, first spring; 907, fitting block; 908, groove; 909, rotating plate; 10, smoothing mechanism; 1001, base; 1002, rotating block; 1003, elastic rope; 1004, second telescopic rod; 1005, arc block; 1006, supporting rod; 1007, hook plate; 1008, second spring; 11, reset mechanism; 1101, curved rod; 1102, moving ring; 1103, sliding rod; 1104, third spring; 1105, pull rope. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1: See Figure 1-Figure 4 The present invention provides a technical solution: a sock turning mechanism of a sock toe sewing machine, comprising a bottom plate 1, a load-bearing plate 2 is fixedly connected to the right side of the top of the bottom plate 1, a blowing device 3 is fixedly connected to the middle end of the top of the load-bearing plate 2, two groups of supporting legs 6 are fixedly connected to the left side of the top of the bottom plate 1, threaded rods 5 are arranged on the side of the two groups of supporting legs 6 close to the load-bearing plate 2, the two groups of threaded rods 5 are fixedly connected to the side of the load-bearing plate 2, the left sides of the two groups of threaded rods 5 are fixedly connected to the supporting legs 6, a motor 7 is installed on the left side of the supporting leg 6 located on the front side, the output end of the motor 7 is fixedly connected to the threaded rod 5, the outer walls of the two groups of threaded rods 5 are threadedly connected to the sliding blocks 4, the top of the bottom plate 1 is fixedly connected to the sock sewing device 8, and also includes:

[0035] The fixing mechanism 9 includes a sliding ring 901, the side of the sliding ring 901 close to the sliding block 4 is connected to the threaded rod 5, the side of the sliding ring 901 away from the threaded rod 5 is fixedly connected to the first telescopic rod 903, the side of the first telescopic rod 903 away from the sliding ring 901 is fixedly connected to the pressing block 902, the side of the pressing block 902 away from the threaded rod 5 is provided with a fitting block 907, the side of the fitting block 907 close to the pressing block 902 is provided with a groove 908, the groove wall of the groove 908 is rotatably connected to a rotating plate 909 through the first rotating shaft, and the rotating plate 909 can be fitted with the socks, and the socks are continuously moved, so that The rotating plate 909 loses its fixation to the pressing block 902, and the fixing mechanism 9 is provided with two groups and both are symmetrically arranged with the middle part of the bottom plate 1 as the center. The rotating plate 909 is used to fit with the inner wall of the socks, and the pressing block 902 is fixedly connected with the first connecting plate 904 on the right side, and the first connecting plate 904 is fixedly connected with the first spring 906 on the side away from the sliding ring 901, and the first spring 906 is fixedly connected with the second connecting plate 905 on the side away from the first connecting plate 904, and the second connecting plate 905 is fixedly connected with the fitting block 907 on the side close to the pressing block 902, and the first spring 906 is used to pull the pressing block 902 to approach the fitting block 907.

[0036] The working principle of this embodiment is as follows: in the preparation stage of sewing the toe of the sock, the sock is first put on the sliding block 4, and then the sliding ring 901 is manually moved to slide on the threaded rod 5 until the position of the sliding ring 901 accurately matches the length of the sock. In this process, as the sock moves on the sliding block 4, the sock will gradually contact the rotating plate 909, pushing the rotating plate 909 to start rotating. As the sock continues to move forward, the rotating plate 909 will perform multi-stage rotation, constantly adjusting its own angle, and finally achieving an ideal state in which one side is tightly fitted with the sock and the other side is fitted with the groove wall of the groove 908. As the rotating plate 909 rotates, its height gradually increases. The first spring 906 starts to shrink and pulls the pressing block 902 to move toward the rotating plate 909. During the movement of the pressing block 902, the first telescopic rod 903 is also pulled to stretch it, so that the pressing block 902 is finally tightly fitted with the outer wall of the sock, firmly fixing the sock, and providing a stable operation basis for the subsequent sock toe sewing work. When the sock needs to be turned over, it only needs to start the motor 7, and the motor 7 drives the threaded rod 5 to rotate, thereby driving the sliding ring 901 to move along the threaded rod 5, and finally realizing the turning over of the sock.

[0037] Example 2: Please refer to Figure 5-Figure 7 On the basis of the first embodiment, the present invention provides a technical solution: it also includes a smoothing mechanism 10, the smoothing mechanism 10 includes a base 1001, the bottom of the base 1001 is fixedly connected to the sock sewing device, the top of the base 1001 is rotatably connected to a rotating block 1002 through a second rotating shaft, the rotating block 1002 is used to adjust the angle of the smoothing mechanism 10, the side of the rotating block 1002 close to the sliding block 4 is fixedly connected to a second telescopic rod 1004, the side of the second telescopic rod 1004 away from the rotating block 1002 is fixedly connected to an arc block 1005, the second telescopic rod 1004 is used to pull the arc block 1005 to move, the side of the second telescopic rod 1004 close to the arc block 1005 is rotatably connected to a support rod 1006 through a third rotating shaft, and the arc block 10 can be adjusted by setting the support rod 1006. 05 is fixed with the elastic rope 1003 in terms of angle and position, a second spring 1008 is arranged at the bottom of the arc block 1005, and the second spring 1008 is fixedly connected to the support rod 1006 on one side thereof, and the second support rod 1006 is used to fix the position of the arc block 1005, and the second spring 1008 is fixedly connected to the middle end of the bottom of the arc block 1005 on one side away from the support rod 1006, and a hook plate 1007 is fixedly connected to the side of the bottom of the arc block 1005 away from the second spring 1008, and the hook plate 1007 is used to smooth out the wrinkles on the surface of the socks, and an elastic rope 1003 is fixedly connected to the top of the arc block 1005, and the elastic rope 1003 is fixedly connected to the top of the rotating block 1002 on one side away from the arc block 1005, and the elastic rope 1003 is used to pull the second telescopic rod 1004 to reset.

[0038] The working principle of this embodiment is as follows: in the sock turning operation process, as the sock moves, it will come into contact with the support rod 1006. This contact causes the support rod 1006 to be subjected to force and rotate toward the base 1001. During this rotation process, the support rod 1006 applies a pulling force to the second spring 1008, causing the second spring 1008 to enter a stretched state. This stretching change of the spring in turn accelerates the rotation rate of the support rod 1006, thereby driving the elastic rope 1003 to contract. When the elastic rope 1003 contracts, it will pull the arc block 1005 to move toward the base 1001, thereby driving the second telescopic rod 1004 to retract. When the support rod 1006 completes the rotation action, the hook plate 1007 at the bottom of the arc block 1005 will fit with the corresponding position. At this time, under the pulling force of the second telescopic rod 1004, the hook plate 1007 begins to apply force to the surface of the sock to flatten the wrinkles on the surface of the sock, laying a good foundation for subsequent processes.

[0039] Example 3: Please refer to Figure 8 On the basis of the first and second embodiments, the present invention provides a technical solution: it also includes a reset mechanism 11, the reset mechanism 11 includes a curved rod 1101, the bottom of the curved rod 1101 is fixedly connected to the top of the base 1001, a sliding rod 1103 is arranged inside the top of the curved rod 1101, the front and back sides of the sliding rod 1103 are fixedly connected to the inner wall of the curved rod 1101, and a moving ring 1102 is sleeved on the outer wall of the sliding rod 1103. By setting the moving ring 1102, the pull rope 1105 can be moved at the same distance. A third spring 1104 is arranged on the side of the moving ring 1102 close to the inner wall of the curved rod 1101, and the third spring 1104 is close to the moving ring 1102. One side is fixedly connected thereto, the moving ring 1102 is used to press the third spring 1104, the side of the third spring 1104 close to the curved rod 1101 is fixedly connected to the inner wall of the curved rod 1101, a pull rope 1105 is fixedly connected to the bottom of the moving ring 1102, the rotating block 1002 is rotated by the moving distance of the pull rope 1105, the side of the pull rope 1105 away from the moving ring 1102 is fixedly connected to the top of the rotating block 1002, the moving ring 1102, the third spring 1104 and the pull rope 1105 are arranged in two groups and are symmetrically arranged with the middle of the curved rod 1101 as the center, and the pull rope 1105 is used to pull the moving ring 1102 to move.

[0040] The working principle of this embodiment is as follows: when the rotating block 1002 rotates, the pull rope 1105 will be pulled to move with it. During this process, the pull rope 1105 will drive the moving ring 1102 to slide toward each other on the sliding rod 1103, causing the third spring 1104 to be stretched. When the downward pressure on the rotating block 1002 disappears, the third spring 1104 begins to shrink, thereby pulling the moving ring 1102 to move in the opposite direction. The moving ring 1102 will generate a pulling force on the pull rope 1105, and the pulling force will eventually cause the rotating block 1002 to rotate upward, thereby realizing the reset operation of the smoothing mechanism 10.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sock turning mechanism of a sock toe sewing machine, comprising a bottom plate (1), a load-bearing plate (2) being fixedly connected to the right side of the top of the bottom plate (1), a blowing device (3) being fixedly connected to the middle end of the top of the load-bearing plate (2), two groups of supporting legs (6) being fixedly connected to the left side of the top of the bottom plate (1), a threaded rod (5) being arranged on one side of the two groups of supporting legs (6) close to the load-bearing plate (2), the two groups of threaded rods (5) being fixedly connected to the one side of the two groups of supporting legs (6), the left sides of the two groups of threaded rods (5) being fixedly connected to the supporting legs (6), a motor (7) being installed on the left side of the supporting legs (6) located at the front side, the output end of the motor (7) being fixedly connected to the threaded rod (5), the outer walls of the two groups of threaded rods (5) being threadedly connected to sliding blocks (4), a sock sewing device (8) being fixedly connected to the top of the bottom plate (1), characterized in that: Also includes: A fixing mechanism (9), the fixing mechanism (9) comprising a sliding ring (901), the side of the sliding ring (901) close to the sliding block (4) is connected to the threaded rod (5), the side of the sliding ring (901) away from the threaded rod (5) is fixedly connected to a first telescopic rod (903), the side of the first telescopic rod (903) away from the sliding ring (901) is fixedly connected to a pressing block (902), the side of the pressing block (902) away from the threaded rod (5) is provided with a fitting block (907), the side of the fitting block (907) close to the pressing block (902) is provided with a groove (908), the groove wall of the groove (908) is rotatably connected to a rotating plate (909) via a first rotating shaft, the fixing mechanism (9) is provided with two groups and both are symmetrically arranged with the middle of the bottom plate (1) as the center, and the rotating plate (909) is used to fit with the inner wall of the sock.

2. The sock turning mechanism of the sock toe sewing machine according to claim 1, characterized in that: The right side of the pressing block (902) is fixedly connected to a first connecting plate (904); the side of the first connecting plate (904) away from the sliding ring (901) is fixedly connected to a first spring (906); the side of the first spring (906) away from the first connecting plate (904) is fixedly connected to a second connecting plate (905); the side of the second connecting plate (905) close to the pressing block (902) is fixedly connected to a fitting block (907); the first spring (906) is used to pull the pressing block (902) closer to the fitting block (907).

3. The sock turning mechanism of the sock toe sewing machine according to claim 1, characterized in that: It also comprises a smoothing mechanism (10), the smoothing mechanism (10) comprising a base (1001), the bottom of the base (1001) being fixedly connected to the sock sewing device (8), and the top of the base (1001) being rotatably connected to a rotating block (1002) via a second rotating shaft, the rotating block (1002) being used to adjust the angle of the smoothing mechanism (10).

4. The sock turning mechanism of the sock toe sewing machine according to claim 3, characterized in that: A second telescopic rod (1004) is fixedly connected to a side of the rotating block (1002) close to the sliding block (4), and a curved block (1005) is fixedly connected to a side of the second telescopic rod (1004) away from the rotating block (1002). The second telescopic rod (1004) is used to pull the curved block (1005) to move.

5. The sock turning mechanism of the sock toe sewing machine according to claim 4, characterized in that: The side of the second telescopic rod (1004) close to the arc block (1005) is rotatably connected to the support rod (1006) via a third rotation axis, and a second spring (1008) is provided at the bottom of the arc block (1005), and the side of the second spring (1008) close to the support rod (1006) is fixedly connected thereto, and the second support rod (1006) is used to fix the position of the arc block (1005).

6. The sock turning mechanism of the sock toe sewing machine according to claim 5, characterized in that: The side of the second spring (1008) away from the support rod (1006) is fixedly connected to the middle end of the bottom of the arc block (1005), and the side of the bottom of the arc block (1005) away from the second spring (1008) is fixedly connected to a hook plate (1007), and the hook plate (1007) is used to smooth out wrinkles on the surface of the socks.

7. The sock turning mechanism of the sock toe sewing machine according to claim 6, characterized in that: An elastic rope (1003) is fixedly connected to the top of the arc block (1005), and a side of the elastic rope (1003) away from the arc block (1005) is fixedly connected to the top of the rotating block (1002). The elastic rope (1003) is used to pull the second telescopic rod (1004) to reset.

8. The sock turning mechanism of the sock toe sewing machine according to claim 1, characterized in that: The invention also comprises a reset mechanism (11), wherein the reset mechanism (11) comprises a curved rod (1101), the bottom of the curved rod (1101) is fixedly connected to the top of the base (1001), a sliding rod (1103) is arranged inside the top of the curved rod (1101), the front and back sides of the sliding rod (1103) are fixedly connected to the inner wall of the curved rod (1101), a moving ring (1102) is sleeved on the outer wall of the sliding rod (1103), a third spring (1104) is arranged on a side of the moving ring (1102) close to the inner wall of the curved rod (1101), the side of the third spring (1104) close to the moving ring (1102) is fixedly connected to the moving ring (1102), and the moving ring (1102) is used to press the third spring (1104).

9. The sock turning mechanism of the sock toe sewing machine according to claim 8, characterized in that: The side of the third spring (1104) close to the curved rod (1101) is fixedly connected to the inner wall of the curved rod (1101); a pull rope (1105) is fixedly connected to the bottom of the moving ring (1102); the side of the pull rope (1105) away from the moving ring (1102) is fixedly connected to the top of the rotating block (1002); the moving ring (1102), the third spring (1104) and the pull rope (1105) are arranged in two groups and are symmetrically arranged with the middle of the curved rod (1101) as the center; the pull rope (1105) is used to pull the moving ring (1102) to move.

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