Automatic breakage prevention and adjustment loom

Abstract

The utility model relates to a silk weaving machine related technical field, especially a silk weaving machine of anti -break silk automatic regulation, including fixed base, pay -off roll, first fixed base, second fixed base, drive motor, warp yarn roll, first mobile seat, second mobile seat, connecting assembly, adjusting assembly and guide component, the utility model relates to a silk weaving machine of anti -break silk automatic regulation through drive motor and drive pay -off roll rotation, convey the yarn to the warp yarn roll, and realize the stable conveyance and tension adjustment of yarn through adjusting assembly and guide component, thereby improve the weaving quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of silk weaving machine processing, and in particular to a silk weaving machine with automatic adjustment to prevent yarn breakage. Background Technology

[0002] In traditional warp weaving, the tension of the warp yarns is typically controlled manually or using simple mechanical devices. However, this method is significantly inefficient and lacks precision. Especially during high-speed weaving, traditional adjustment methods struggle to control the warp yarn tension effectively in real time, easily leading to tension instability and affecting weaving quality and fabric uniformity.

[0003] The related technology, disclosed in CN108861848A, describes a tension-adjustable warp feeding mechanism for a yarn loom, relating to the field of textile machinery technology. This invention includes a base, with a warp roller rotatably connected to one surface of the base via a bracket. The warp roller can rotate freely. A slide is slidably connected to one surface of the base, and a drive device is fixed to one surface of the slide. A warp feed roller is fixed to the output shaft of the drive device. A sleeve is fixed to the surface of the slide, and the surface of the warp feed roller rotatably engages with the slide. The surface of the warp feed roller has a spiral groove with a frosted surface to increase friction with the yarn. The spiral groove has one turn. This invention, through the spiral groove structure design on the warp feed roller, combined with the use of the drive device and sleeve, achieves active warp feeding by rotating a spiral thread. The warp feed end is not affected by angular velocity; only the rotational speed needs to be controlled to control the yarn feed amount and tension, making it easy to control and maintaining stable tension. The tension-regulating silk looms mentioned above rely on precise control of the rotation speed of the warp feed rollers, but may still be affected by other external factors, and cannot fully meet the requirements of high-speed and high-precision textile manufacturing. Utility Model Content

[0004] This invention solves the problems in related technologies and proposes a silk weaving machine with automatic anti-broken yarn adjustment. It drives the feeding roller to rotate through the drive motor, and feeds the yarn onto the warp roller. The adjustment component and the guide component realize the stable feeding and tension adjustment of the yarn, thereby improving the weaving quality and production efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a silk weaving machine with automatic adjustment for preventing yarn breakage, comprising a fixed base, a feeding roller disposed at one end of the fixed base, a first fixed seat disposed at one end of the feeding roller, a second fixed seat disposed at the other end of the feeding roller, a drive motor for driving the feeding roller, a warp roller disposed relative to the feeding roller, a first movable seat disposed at one end of the warp roller, a second movable seat disposed at the other end of the warp roller, a connecting assembly disposed between the first movable seat and the second movable seat and the fixed base, an adjusting assembly disposed between the first fixed seat and the first movable seat, and a guiding assembly disposed between the second fixed seat and the second movable seat.

[0006] By adopting the above technical solution, the feeding roller is driven by a drive motor to rotate and the yarn is conveyed to the warp roller. The yarn is stably conveyed and the tension is adjusted by the adjustment component and the guide component, thereby improving the weaving quality and production efficiency.

[0007] As a preferred embodiment, a sealed bearing is provided between the first fixed seat and the second fixed seat and the feeding roller, and a fixing screw is provided between the first fixed seat and the second fixed seat and the fixed base.

[0008] By adopting the above technical solution, the first and second fixed seats are respectively fixed on the fixed base to support the feeding roller and ensure that the feeding roller is stably installed on the device. A sealed bearing is installed between the first and second fixed seats and the feeding roller, which not only reduces friction and ensures smooth rotation of the feeding roller, but also improves the overall sealing and durability of the device. Fixing screws are used to firmly fix the first and second fixed seats to the fixed base, ensuring the stability of the entire system.

[0009] As a preferred embodiment, the drive motor is fixedly connected to the fixed base, and the output shaft of the drive motor is connected to the feeding roller.

[0010] By adopting the above technical solution, the main function of the drive motor is to provide power, driving the feed roller to rotate through its output shaft. The fixed base is used to fix the position of the drive motor and ensure its stable operation. Specifically, the drive motor is connected to the feed roller through its output shaft; after the drive motor starts, the output shaft drives the feed roller to rotate.

[0011] As a preferred embodiment, the connecting assembly includes a fixing pin disposed between the first movable seat and the second movable seat and the fixed base, and a sliding hole disposed on the fixed base that is adapted to the fixing pin. The fixing pin passes through the first movable seat and the second movable seat and is connected to the fixing nut.

[0012] By adopting the above technical solution, the function of the fixing pin is to fix the positions of the first and second movable seats, ensuring that they do not move relative to each other during use and guaranteeing overall stability. The sliding hole is a structure that cooperates with the fixing pin, providing guidance for the positioning and fixing of the fixing pin, ensuring the accuracy and reliability of the connection. The fixing nut is used to tighten the fixing pin, ensuring a more secure connection between the first and second movable seats.

[0013] As a preferred embodiment, a sealed bearing is provided between the first movable seat and the second movable seat and the warp roller.

[0014] By adopting the above technical solution, the function of the first and second movable seats is to support and guide the warp roller, enabling it to rotate stably in a specific position. The sealed bearing, as a key component, ensures the sealing between the first and second movable seats and the warp roller, effectively preventing the entry of external dust, fibers, and other foreign matter, thereby extending the service life of the warp roller and other components, and improving the overall sealing and durability of the equipment.

[0015] As a preferred embodiment, the adjustment assembly includes an adjustment screw that passes through the first movable seat and is rotatably connected to the first fixed seat, a threaded sleeve that is adapted to the adjustment screw and is disposed on the first movable seat, and a second tension spring disposed on the outer periphery of the adjustment screw. The threaded sleeve is fixedly connected to the first movable seat, and its inner wall is provided with an internal thread adapted to the adjustment screw.

[0016] By adopting the above technical solution, the adjusting screw passes through the first movable seat and the first fixed seat, achieving a rotatable connection. The relative distance is adjusted through the cooperation of the screw sleeve on the first movable seat and the adjusting screw, thereby adjusting the distance between the feed roller and the warp roller, and ultimately achieving the purpose of adjusting the warp tension of the yarn. A second tension spring is sleeved on the outer circumference of the adjusting screw, helping to maintain the tension between the first fixed seat and the first movable seat, preventing external impacts from causing positional displacement, and thus maintaining a constant distance between them. In this way, by adjusting the distance between the first fixed seat and the first movable seat, the distance between the feed roller and the warp roller can be effectively adjusted, thereby achieving precise control of the warp tension of the yarn.

[0017] As a preferred embodiment, one end of the second tension spring is fixedly connected to one end of the first fixed seat relative to the first movable seat, and the other end of the second tension spring is fixedly connected to one end of the second movable seat relative to the first fixed seat.

[0018] By adopting the above technical solution, one end of the second tension spring is fixed on the first movable seat and the other end is fixed on the second movable seat, so that the second movable seat can elastically displace relative to the first fixed seat, thereby providing necessary elastic support and buffering effect during the movement of the equipment, and the second tension spring ensures that the first movable seat can maintain a stable tension state relative to the first fixed seat after adjustment.

[0019] As a preferred embodiment, the guide assembly includes a sliding sleeve fixedly connected to the second movable seat, a sliding rod fixedly connected to the second fixed seat and slidably connected to the sliding sleeve, and a first tension spring disposed on the outer periphery of the sliding rod. One end of the first tension spring is fixedly connected to the second fixed seat, and the other end of the first tension spring is fixedly connected to the end of the sliding sleeve away from the second movable seat.

[0020] By adopting the above technical solution, the sliding sleeve fixedly connected to the second movable seat provides a stable guiding structure, ensuring that the sliding rod moves in a straight line inside it; the sliding rod fixedly connected to the second fixed seat and slidably connected to the sliding sleeve moves freely inside the sliding sleeve, realizing the linear guiding function; the first tension spring set on the outer periphery of the sliding rod provides a constant pulling force, with one end fixed to the second fixed seat and the other end fixed to the end of the sliding sleeve away from the second movable seat, so that the sliding sleeve can return to the initial position when subjected to external force, thereby ensuring the stability and reset function of the entire assembly.

[0021] Compared with the prior art, the beneficial effects of this utility model are: This utility model; 1. The fixed base serves as the fundamental support for the entire device, ensuring the stability of all components. The feed roller is responsible for conveying the yarn through its surface, while the first and second fixed bases are fixed to both ends of the feed roller, providing support and stability. The drive motor drives the rotation of the feed roller, achieving continuous yarn feeding; 2. The warp roller is used to receive and guide the yarn into the processing process. The first and second movable seats are located at both ends of the warp roller, respectively, so as to be adjusted by the adjustment component. The adjustment component makes the distance between the warp roller and the feed roller adjustable, thereby adjusting the tension between them and ensuring the stability and continuity of the yarn feeding process; 3. The guiding component guides the warp rollers during adjustment to prevent positional deviations caused by adjustment; 4. The connecting components ensure that the first and second movable seats remain firmly fixed to the base after adjustment, guaranteeing the structural stability and operational safety of the equipment. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall structure of a silk weaving machine with automatic anti-broken yarn adjustment according to the present invention; Figure 2 This utility model relates to an automatic adjustment mechanism for preventing yarn breakage in a silk weaving machine. Figure 1 Another structural diagram from another perspective; Figure 3 This utility model relates to an automatic adjustment mechanism for preventing yarn breakage in a silk weaving machine. Figure 1 A structural schematic diagram of the front view; Figure 4 This is a schematic diagram of the structure of the adjustment component in a silk weaving machine that automatically adjusts to prevent yarn breakage, according to this utility model. Figure 5 This is a schematic diagram of the structure of a guide assembly in a silk weaving machine with automatic anti-broken yarn adjustment according to this utility model. In the picture: 1. Fixed base; 10. Sliding hole; 11. Feed roller; 111. First fixed seat; 112. Second fixed seat; 12. Warp roller; 121. First movable seat; 1211. Screw sleeve; 122. Second movable seat; 2. Drive motor; 3. Fixed pin; 41. Sliding sleeve; 42. Sliding rod; 421. First tension spring; 51. Adjusting screw; 511. Second tension spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] like Figures 1 to 5 As shown, a yarn weaving machine with automatic anti-broken yarn adjustment includes a fixed base 1, a feed roller 11 disposed at one end of the fixed base 1, a first fixed seat 111 disposed at one end of the feed roller 11, a second fixed seat 112 disposed at the other end of the feed roller 11, a drive motor 2 for driving the feed roller 11, a warp roller 12 disposed relative to the feed roller 11, a first movable seat 121 disposed at one end of the warp roller 12, a second movable seat 122 disposed at the other end of the warp roller 12, a connecting component disposed between the first movable seat 121 and the second movable seat 122 and the fixed base 1, an adjusting component disposed between the first fixed seat 111 and the first movable seat 121, and a guiding component disposed between the second fixed seat 112 and the second movable seat 122. The drive motor 2 drives the feed roller 11 to rotate, feeding yarn onto the warp roller 12. The adjusting component and the guiding component achieve stable yarn feeding and tension adjustment, thereby improving weaving quality and production efficiency.

[0030] Please refer to details. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A sealed bearing is provided between the first fixed seat 111 and the second fixed seat 112 and the feeding roller 11. A fixing screw is provided between the first fixed seat 111 and the second fixed seat 112 and the fixed base 1. The first fixed seat 111 and the second fixed seat 112 are respectively fixed to the fixed base 1 to support the feeding roller 11 and ensure that the feeding roller 11 is stably installed on the device. The sealed bearing installed between the first fixed seat 111 and the second fixed seat 112 and the feeding roller 11 not only reduces friction and ensures smooth rotation of the feeding roller 11, but also improves the overall sealing and durability of the device. The fixing screw is used to firmly fix the first fixed seat 111 and the second fixed seat 112 to the fixed base 1, ensuring the stability of the entire system.

[0031] Please refer to details. Figure 1 , Figure 2 and Figure 3 The drive motor 2 is fixedly connected to the fixed base 1, and the output shaft of the drive motor 2 is connected to the feeding roller 11. The main function of the drive motor 2 is to provide power and drive the feeding roller 11 to rotate through its output shaft. The fixed base 1 is used to fix the position of the drive motor 2 to ensure its stable operation. Specifically, the drive motor 2 is connected to the feeding roller 11 through its output shaft. After the drive motor 2 is started, the output shaft drives the feeding roller 11 to rotate.

[0032] Please refer to details. Figure 1 and Figure 2The connecting assembly includes a fixing pin 3 disposed between the first movable seat 121 and the second movable seat 122 and the fixed base 1, and a sliding hole 10 disposed on the fixed base 1 that is adapted to the fixing pin 3. The fixing pin 3 passes through the first movable seat 121 and the second movable seat 122 and connects to the fixing nut. The function of the fixing pin 3 is to fix the position of the first movable seat 121 and the second movable seat 122, ensuring that they do not move relative to each other during use and ensuring overall stability. The sliding hole 10 is a structure that cooperates with the fixing pin 3, providing guidance for the positioning and fixing of the fixing pin 3, ensuring the accuracy and reliability of the connection. The fixing nut is used to tighten the fixing pin 3, ensuring a more secure connection between the first movable seat 121 and the second movable seat 122.

[0033] Please refer to details. Figure 1 , Figure 2 and Figure 3 Sealed bearings are installed between the first movable seat 121 and the second movable seat 122 and the warp roller 12. The function of the first movable seat 121 and the second movable seat 122 is to support and guide the warp roller 12, enabling it to rotate stably in a specific position. As a key component, the sealed bearings ensure the sealing between the first movable seat 121 and the second movable seat 122 and the warp roller 12, effectively preventing the entry of external dust, fibers, and other foreign objects, thereby extending the service life of the warp roller 12 and other components, and improving the overall sealing and durability of the equipment.

[0034] Please refer to details. Figure 1 and Figure 4The adjusting assembly includes an adjusting screw 51 that passes through the first movable seat 121 and is rotatably connected to the first fixed seat 111; a threaded sleeve 1211 that is adapted to the adjusting screw 51 and is disposed on the first movable seat 121; and a second tension spring 511 disposed on the outer periphery of the adjusting screw 51. The threaded sleeve 1211 is fixedly connected to the first movable seat 121 and has an internal thread on its inner wall that is adapted to the adjusting screw 51. The adjusting screw 51 passes through the first movable seat 121 and the first fixed seat 111 and is rotatably connected. The relative distance is adjusted by the cooperation between the threaded sleeve 1211 and the adjusting screw 51, thereby adjusting the distance between the feed roller 11 and the warp roller 12, and thus achieving the purpose of adjusting the warp tension of the yarn. The second tension spring 511 is sleeved on the outer periphery of the adjusting screw 51, which helps to maintain the tension between the first fixed seat 111 and the first movable seat 121, prevents external impacts from causing positional displacement, and thus maintains a constant distance between them. In this way, by adjusting the distance between the first fixed seat 111 and the first movable seat 121, the distance between the feed roller 11 and the warp roller 12 can be effectively adjusted, thereby achieving precise control of the warp tension of the yarn. In terms of working principle, by rotating the adjusting screw 51, the position of the adjusting sleeve 1211 on the adjusting screw 51 is adjusted, causing the first movable seat 121 to move relative to the first fixed seat 111, thus changing the distance between them and adjusting the warp tension of the yarn. The second tension spring 511 ensures that a stable tension state is maintained after adjustment.

[0035] Please refer to details. Figure 4 One end of the second tension spring 511 is fixedly connected to one end of the first fixed seat 111 relative to the first movable seat 121, and the other end of the second tension spring 511 is fixedly connected to one end of the second movable seat 122 relative to the first fixed seat 111. One end of the second tension spring 511 is fixed on the first movable seat 121, and the other end is fixed on the second movable seat 122, so that the second movable seat 122 can elastically displace relative to the first fixed seat 111, thereby providing necessary elastic support and buffering during the movement of the equipment. The second tension spring 511 also ensures that the first movable seat 121 can maintain a stable tension state relative to the first fixed seat 111 after adjustment.

[0036] Please refer to details. Figure 1 and Figure 5The guide assembly includes a sliding sleeve 41 fixedly connected to the second movable seat 122, a sliding rod 42 fixedly connected to the second fixed seat 112 and slidably connected to the sliding sleeve 41, and a first tension spring 421 disposed on the outer periphery of the sliding rod 42. One end of the first tension spring 421 is fixedly connected to the second fixed seat 112, and the other end of the first tension spring 421 is fixedly connected to the end of the sliding sleeve away from the second movable seat 122. The sliding sleeve 41 fixedly connected to the second movable seat 122 provides a stable guide structure, ensuring that the sliding rod 42 moves linearly inside it. The sliding rod 42 fixedly connected to the second fixed seat 112 and slidably connected to the sliding sleeve 41 moves freely inside the sliding sleeve 41, realizing a linear guide function. The first tension spring 421 disposed on the outer periphery of the sliding rod 42 provides a constant tension force. By fixing one end of it to the second fixed seat 112 and the other end to the end of the sliding sleeve away from the second movable seat 122, the sliding sleeve can return to its initial position when subjected to external force, thereby ensuring the stability and reset function of the entire assembly. The working principle is as follows: when the first movable seat 121 moves, it drives the warp roller 12 to move, the sliding rod 42 moves inside the sliding sleeve 41, and at the same time the first tension spring 421 provides a reverse pulling force, so that the sliding sleeve can automatically return to the initial position after completing the movement, ensuring the flexibility and stability of the movement.

[0037] In this embodiment, during use, the position of the screw sleeve 1211 on the adjusting screw 51 is adjusted by rotating the adjusting screw 51, so that the first movable seat 121 moves relative to the first fixed seat 111, thereby changing the distance between the two and adjusting the warp tension of the yarn. The second tension spring 511 ensures that a stable tension state can be maintained after adjustment. The sliding rod 42 moves inside the sliding sleeve 41, and the first tension spring 421 provides a reverse pulling force, so that the sliding sleeve can automatically return to the initial position after completing the movement, ensuring the flexibility and stability of the movement. The drive motor 2 drives the feeding roller 11 to rotate, and the yarn is fed onto the warp roller 12.

[0038] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A silk weaving machine with automatic anti-broken yarn adjustment, characterized in that: The device includes a fixed base (1), a feeding roller (11) disposed at one end of the fixed base (1), a first fixed seat (111) disposed at one end of the feeding roller (11), a second fixed seat (112) disposed at the other end of the feeding roller (11), a drive motor (2) for driving the feeding roller (11), a warp roller (12) disposed relative to the feeding roller (11), a first movable seat (121) disposed at one end of the warp roller (12), a second movable seat (122) disposed at the other end of the warp roller (12), a connecting component disposed between the first movable seat (121) and the second movable seat (122) and the fixed base (1), an adjusting component disposed between the first fixed seat (111) and the first movable seat (121), and a guiding component disposed between the second fixed seat (112) and the second movable seat (122).

2. The silk weaving machine with automatic anti-broken yarn adjustment according to claim 1, characterized in that: A sealed bearing is provided between the first fixed seat (111) and the second fixed seat (112) and the feeding roller (11), and a fixing screw is provided between the first fixed seat (111) and the second fixed seat (112) and the fixed base (1).

3. The silk weaving machine with automatic anti-broken yarn adjustment according to claim 2, characterized in that: The drive motor (2) is fixedly connected to the fixed base (1), and the output shaft of the drive motor (2) is connected to the feeding roller (11).

4. A silk weaving machine with automatic anti-broken yarn adjustment according to claim 3, characterized in that: The connecting assembly includes a fixing pin (3) disposed between the first movable seat (121) and the second movable seat (122) and the fixed base (1) and a sliding hole (10) disposed on the fixed base (1) that is adapted to the fixing pin (3). The fixing pin (3) passes through the first movable seat (121) and the second movable seat (122) and is connected to the fixing nut.

5. A silk weaving machine with automatic anti-broken yarn adjustment according to claim 4, characterized in that: A sealed bearing is provided between the first movable seat (121) and the second movable seat (122) and the warp roller (12).

6. A silk weaving machine with automatic anti-broken yarn adjustment according to claim 5, characterized in that: The adjustment assembly includes an adjustment screw (51) that passes through the first movable seat (121) and is rotatably connected to the first fixed seat (111), a screw sleeve (1211) that is adapted to the adjustment screw (51) and is disposed on the first movable seat (121), and a second tension spring (511) disposed on the outer periphery of the adjustment screw (51). The screw sleeve (1211) is fixedly connected to the first movable seat (121), and its inner wall is provided with an internal thread adapted to the adjustment screw (51).

7. A silk weaving machine with automatic anti-broken yarn adjustment according to claim 6, characterized in that: One end of the second tension spring (511) is fixedly connected to one end of the first fixed seat (111) relative to the first movable seat (121), and the other end of the second tension spring (511) is fixedly connected to one end of the second movable seat (122) relative to the first fixed seat (111).

8. A silk weaving machine with automatic anti-broken yarn adjustment according to claim 7, characterized in that: The guide assembly includes a sliding sleeve (41) fixedly connected to the second movable seat (122), a sliding rod (42) fixedly connected to the second fixed seat (112) and slidably connected to the sliding sleeve (41), and a first tension spring (421) disposed on the outer periphery of the sliding rod (42). One end of the first tension spring (421) is fixedly connected to the second fixed seat (112), and the other end of the first tension spring (421) is fixedly connected to the end of the sliding sleeve (41) away from the second movable seat (122).

Images