Ceramic fiber separating and doubling device

Abstract

The utility model discloses a ceramic fiber separating and doubling device which comprises a fiber releasing seat provided with at least two fiber releasing mechanisms and a fiber collecting seat provided with at least two fiber collecting mechanisms, and each fiber releasing mechanism is provided with a first fiber cylinder frame, a first tension rod and a first guide wheel. A second fiber cylinder frame, a yarn guide frame, a second tension rod, a second guide wheel and a counting mechanism are arranged on the yarn collecting mechanism, a plurality of first traction guide wheels are arranged on the yarn releasing seat, and a plurality of second traction guide wheels are arranged on the yarn collecting seat; the filament dividing and doubling device is simple in structure and convenient to operate, the at least two filament releasing mechanisms are arranged on the filament releasing seat, and the at least two filament collecting mechanisms are arranged on the filament collecting seat, so that the filament dividing or doubling operation of ceramic fiber filaments can be realized; one ceramic fiber yarn cylinder is divided into different meters or a plurality of ceramic fiber yarn cylinders are combined into one or more meters, so that the automation degree and the production efficiency of equipment are improved, the damage to fibers is reduced, the product quality is improved, and different requirements of customers are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic fiber production, in particular to a ceramic fiber dividing and doubling device. Background Art

[0002] Ceramic fiber (SiCF) reinforced ceramic matrix composites have excellent high-temperature mechanical properties and are widely used as high-temperature structural components. Ceramic fiber silk, as a new type of semiconductor material, has become the most important semiconductor material for manufacturing short-wavelength optoelectronic devices, high-temperature devices, radiation-resistant devices, and high-power, high-frequency electronic devices due to its excellent physical, chemical and electrical properties. Ceramic fiber silk materials have great application potential in high-temperature, high-frequency, high-power, high-voltage optoelectronics and radiation resistance.

[0003] In the existing production process of ceramic fiber yarns, ceramic fiber yarns are usually wound on fiber paper tubes according to a certain number of meters (or weight) to form ceramic fiber yarn tubes, and batch production is carried out. However, when customers need ceramic fiber yarns of different numbers of meters, due to the limitations of existing production technology and corresponding equipment, it is difficult to produce a specific number of meters alone, or the number of meters of the wound ceramic fiber yarn tubes can be increased or decreased manually. However, it is inconvenient to change the existing production parameter process, and manual operation is cumbersome.

[0004] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Utility Model Content

[0005] The utility model aims to provide a fiber dividing and doubling device which has a simple structure, is easy to operate and can combine or separate ceramic fibers into ceramic fibers of different lengths.

[0006] In order to achieve the above object, the utility model adopts the following technical solution:

[0007] A ceramic fiber filament dividing and doubling device comprises a wire-releasing seat provided with at least two wire-releasing mechanisms and a wire-collecting seat provided with at least two wire-collecting mechanisms, the wire-releasing mechanism being provided with a first fiber tube rack for placing fiber paper tubes, a first tension rod and a first guide wheel, the wire-collecting mechanism being provided with a second fiber tube rack for placing fiber paper tubes, a wire guide rack, a second tension rod, a second guide wheel and a counting mechanism, the counting mechanism comprising a counting wheel arranged on the wire-collecting seat and a counting table electrically connected to the counting wheel and a buzzer, the first fiber tube rack being provided with a first tensioning mechanism for tensioning or loosening the fiber paper tube, the wire-releasing seat being provided with a plurality of first pulling guide wheels, the wire-collecting seat being provided with a plurality of second pulling guide wheels, the ceramic fiber filaments passing through the first fiber tube rack, the first guide wheel, the first tension rod, the first pulling guide wheel, the second pulling guide wheel, the counting wheel, the second guide wheel, the second tension rod and the wire guide rack in sequence and being guided to the second fiber tube rack.

[0008] Furthermore, the second fiber tube rack has the same structure as the first fiber tube rack, and the second fiber tube rack is provided with a second tensioning mechanism for tensioning or loosening the fiber paper tube, and the second tensioning mechanism has the same structure as the first tensioning mechanism.

[0009] Furthermore, the wire guide frame includes a traction seat provided with a slide groove, a wire guide seat inserted into the slide groove and slidingly matched with the traction seat, a plurality of wire guide rollers arranged on the wire guide seat, a pressure roller seat arranged at both ends of the traction seat, and a pressure roller arranged on the pressure roller seat.

[0010] Furthermore, the first tensioning mechanism includes a movable sleeve movably arranged on the wire release seat, the first fiber tube rack is sleeved on the movable sleeve, and movable sleeve wheels are provided at both ends of the movable sleeve corresponding to the first fiber tube rack, the movable sleeve wheels are fixedly connected to the movable sleeve, and two spring mounting grooves are respectively formed between the two axial ends of the movable sleeve wheels corresponding to the first fiber tube rack, and springs are sleeved in the spring mounting grooves.

[0011] Furthermore, the first tensioning mechanism also includes a handle for controlling the movement of the movable sleeve, the handle is rotatably arranged on the wire-releasing seat through a fixed seat, one end of the handle passes through the fixed seat and extends to an end of the movable sleeve close to the wire-releasing seat, an end of the handle close to the movable sleeve is fixedly connected to an eccentric wheel, the eccentric wheel rests on the movable sleeve, and the middle part of the handle is connected to the internal thread of the fixed seat.

[0012] By adopting the above-mentioned design scheme, the beneficial effects of the utility model are:

[0013] The wire dividing and winding device of the utility model has a simple structure and is easy to operate. By arranging at least two wire-releasing mechanisms on the wire-releasing seat and at least two wire-collecting mechanisms on the wire-collecting seat, the wire-dividing or wire-dividing operations of ceramic fiber yarns can be realized, and one ceramic fiber yarn tube can be divided into different lengths of meters or multiple ceramic fiber yarn tubes can be combined into one ceramic fiber yarn tube with more meters, thereby improving the degree of automation and production efficiency of the equipment, reducing damage to fibers, improving product quality, and meeting different customer needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the wire splitting state of the wire splitting and doubling device of the utility model, in which part of the fiber paper tube and the spring are omitted.

[0015] Figure 2 It is a three-dimensional schematic diagram of the wire-dividing and wire-docking device of the utility model in the wire-docking state, in which part of the fiber paper tube is omitted.

[0016] Figure 3 The utility model is a wire splitting and doubling device Figure 1 Enlarged view of point A in the middle.

[0017] In the figure:

[0018] 1-wire releasing mechanism; 10-wire releasing seat;

[0019] 11-first traction guide wheel; 12-first fiber creel;

[0020] 13-first tension rod; 14-first guide wheel;

[0021] 2-wire collecting mechanism; 20-wire collecting seat;

[0022] 21-second traction guide wheel; 22-second fiber creel rack;

[0023] 23-wire guide frame; 24-second tension rod;

[0024] 25-second guide wheel; 26-counting mechanism;

[0025] 231-chute; 232-traction seat;

[0026] 233-wire guide seat; 234-wire guide roller;

[0027] 235-pressing roller seat; 236-pressing roller;

[0028] 237-anti-roll roller; 261-counting wheel;

[0029] 262-counting meter; 263-buzzer;

[0030] 3-first tensioning mechanism; 30-fiber paper tube;

[0031] 31- movable sleeve;

[0032] 32-movable sleeve wheel; 33-spring;

[0033] 34-spring mounting slot; 35-handle;

[0034] 36-fixed seat; 37-eccentric wheel;

[0035] 4- the second tensioning mechanism; 40- ceramic fiber yarn. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solutions in the embodiments of the present invention 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 3 As shown, a ceramic fiber filament splitting and doubling device comprises a wire-releasing seat 10 provided with at least two wire-releasing mechanisms 1 and a wire-collecting seat 20 provided with at least two wire-collecting mechanisms 2. The wire-releasing seat 10 and the wire-collecting seat 20 in the utility model both comprise a base and a rectangular mounting plate fixed on the base. The wire-releasing seat 10 is provided with a plurality of first pulling guide wheels 11 at a position close to the wire-collecting seat 20, and the wire-collecting seat 20 is provided with a plurality of second pulling guide wheels 21 at a position away from the wire-releasing seat 10. The first pulling guide wheels 11 are arranged on the upper part of the wire-releasing seat 10, and the second pulling guide wheels 21 are arranged on the upper part of the wire-releasing seat 10. The guide wheel 21 is arranged on the upper part of the wire collecting seat 20, and the number of the wire releasing mechanism 1, the wire collecting mechanism 2, the first pulling guide wheel 11 and the second pulling guide wheel 21 are all arranged correspondingly; preferably, the wire releasing mechanism 1 and the wire collecting mechanism 2 in the utility model are each provided with two groups, the two groups of wire releasing mechanisms 1 are arranged at intervals on the mounting plate of the wire releasing seat 10, and the two groups of wire collecting mechanisms 2 are arranged at intervals on the mounting plate of the wire collecting seat 20, the wire releasing seat 10 is provided with two first pulling guide wheels 11, and the wire collecting seat 20 is provided with two second pulling guide wheels 21.

[0038] The wire-releasing mechanism 1 is provided with a first fiber tube frame 12, a first tension rod 13 and a first guide wheel 14 for placing a fiber paper tube 30, and the first fiber tube frame 12 is provided with a first tensioning mechanism 3 for tensioning or loosening the fiber paper tube 30; the wire-collecting mechanism 2 is provided with a second fiber tube frame 22, a wire guide frame 23, a second tension rod 24, a second guide wheel 25 and a counting mechanism 26 for placing the fiber paper tube 30, and the counting mechanism 26 includes a counting wheel 261 arranged on the wire collecting seat 20, a counting meter 262 electrically connected to the counting wheel 261, and a buzzer 263; when in use, the wound fiber tube is wound The ceramic fiber yarn tube is placed on the first fiber tube rack 12, and the fiber paper tube without the ceramic fiber yarn 40 wound thereon is placed on the second fiber tube rack 22. The ceramic fiber yarn 40 on the wound ceramic fiber yarn tube is then passed around the first guide wheel 14, the first tension rod 13 and the first pulling guide wheel 11 in sequence and guided to the second pulling guide wheel 12 on the wire collecting seat 20. When the ceramic fiber yarn 40 is guided from the second pulling guide wheel 12 to the wire collecting mechanism 2, it is passed around the counting wheel 261, the second guide wheel 25, the second tension rod 24 and the wire guide rack 23 in sequence and guided to the fiber paper tube on the second fiber tube rack 22.

[0039] The wire splitting and doubling device of the utility model also includes a control system, which is controlled and connected with the wire releasing mechanism 1, the wire collecting mechanism 2, the wire guide frame 23, the first tension rod 13, the second tension rod 24, and the counting mechanism 26. The control system is used to control the running speed of the wire releasing mechanism 1 and the wire collecting mechanism 2, control the running speed of the wire guide frame 23, control the swing amplitude of the first tension rod 13 and the second tension rod 24, and control the operation of the counting mechanism 26. The control system can adopt the conventional PCL control system in the field.

[0040] It should be noted that the counting mechanism 26 in this embodiment adopts conventional electronic counting devices in the field. When the ceramic fiber yarn 40 passes through the counting wheel 261, the counting table 262 can display the number of meters of winding in real time. When the number of meters on the counting table 262 exceeds the preset value, the buzzer 263 sounds an alarm and transmits the alarm signal to the control system. After the control system receives the signal, the control system controls the wire collecting mechanism 2 to stop the wire collecting work; the counting mechanism 26 is set to meet the customer's demand for ceramic fiber yarn tubes of different meters; in the utility model, the second fiber tube rack 22 and the first fiber tube rack 12 have the same structure, and the second fiber tube rack 22 is provided with a second tensioning mechanism 4 for tensioning or loosening the fiber paper tube 30, and the second tensioning mechanism 4 and the first tensioning mechanism 3 have the same structure.

[0041] Specifically, the first tensioning mechanism 3 includes a movable sleeve 31 movably arranged on the wire-releasing seat 10, and the first fiber drum rack 12 is sleeved on the movable sleeve 31. The first fiber drum rack 12 in the utility model can adopt a conventional fiber drum rack in the field having a support rod in the middle and a rotating wheel 121 at both ends. The movable sleeve 31 is provided with a movable sleeve 32 at the positions of the two rotating wheels 121 at both ends of the first fiber drum rack 12. The movable sleeve 31 is fixedly connected to the movable sleeve 31, and the outer diameter of the movable sleeve 32 and the rotating wheel 121 are the same. There is a space for placing a spring 33 between the movable sleeve 32 and the corresponding rotating wheel 121, that is, two spring installation grooves 34 are respectively formed between the movable sleeve 32 and the two rotating wheels 121 in the axial direction of the first fiber drum rack 12. The size of the space between the movable sleeve 32 and the rotating wheel 121 can be adjusted by adjusting the relative distance between the movable sleeve 31 and the wire-releasing seat 10; an elastic member (not shown in the figure) is fixedly provided between the movable sleeve 31 and the wire-releasing seat 10. Due to the action of the elastic member There is a certain distance between the movable sleeve 31 and the wire-releasing seat 10. When the fiber paper tube 30 needs to be placed, the distance between the movable sleeve 31 and the wire-releasing seat 10 is adjusted, and the movable sleeve 31 is slid toward the wire-releasing seat 10 and squeezes the elastic member, so that the space between the movable sleeve wheel 32 and the rotating wheel 121 becomes larger, so that the spring 33 can be tightened in the spring installation groove 34 under its own elastic action, and then the fiber paper tube 30 is put on the first fiber tube frame 12, and the movable sleeve 31 and the wire-releasing seat are adjusted after the sleeve is put on. The movable sleeve 31 is moved away from the wire unwinding seat 10, and the elastic member is restored, so that the space between the movable sleeve wheel 32 and the rotating wheel 121 becomes smaller. At this time, the spring 33 will be squeezed by the movable sleeve wheel 32, and a part of the spring 33 will extend out of the spring mounting groove 34 to tighten the fiber paper tube 30. When the fiber paper tube 30 needs to be removed, the movable sleeve 31 is adjusted to increase the space between the movable sleeve wheel 32 and the rotating wheel 121, so that the spring 33 can be tightened in the spring mounting groove 34.

[0042] Preferably, the first tensioning mechanism 3 also includes a handle 35 for controlling the movement of the movable sleeve 31, and the handle 35 is rotatably arranged on the wire release seat 10 through a fixed seat 36. Specifically, one end of the handle 35 passes through the fixed seat 36 and extends to the end of the movable sleeve 31 close to the wire release seat 10, and the end of the handle 35 close to the movable sleeve 31 is fixedly connected to an eccentric wheel 37, and the eccentric wheel 37 rests on the movable sleeve 31. The middle part of the handle 35 is threadedly connected to the interior of the fixed seat 36. Rotating the handle 35 can drive the eccentric wheel 37 and the movable sleeve 31 to move closer to or away from the wire release seat 10. In this way, the distance between the movable sleeve 31 and the wire release seat 10 can be adjusted by rotating the handle 35, so that the spring 33 can tighten or loosen the fiber paper tube 30, which is simple and convenient to use. It should be noted that the first tensioning mechanism 3 and the second tensioning mechanism 4 in this embodiment can also be replaced by other tensioning mechanisms in the field that can achieve the same effect. The specific structure will not be described in detail here.

[0043] The wire guide frame 23 includes a traction seat 232 provided with a slide groove 231, a wire guide seat 233 inserted into the slide groove 231 and slidably matched with the traction seat 232, a plurality of wire guide rollers 234 arranged on the wire guide seat 233, a pressure roller seat 235 arranged at both ends of the traction seat 232, and a pressure roller 236 arranged on the pressure roller seat 235; the wire guide roller 234 includes at least two groups of roller groups for adjusting the direction of the ceramic fiber filament 40, which are clamped in pairs (similar to clamping with two fingers, which can achieve a better clamping effect). , and an anti-winding roller 237 cooperating with the pressure roller 236 (to prevent the ceramic fiber yarn 40 from winding onto the pressure roller 236), the slide groove 231 is arranged along the axial direction of the traction seat 232, and the wire collecting seat 20 is also provided with a driving motor (not shown in the figure) for controlling the sliding of the wire guide seat 233, and a wire guide frame 23 is arranged, which can make the pulled ceramic fiber yarn 40 reciprocatingly wound along the axial direction of the fiber paper tube 30 during the wire collecting process, so that the ceramic fiber yarn 40 can be evenly wound on the fiber paper tube 30.

[0044] The working principle of the wire splitting and doubling device of the utility model is as follows:

[0045] When a wound ceramic fiber yarn tube needs to be divided into two ceramic fiber yarn tubes of different lengths, such as Figure 1As shown, the first tensioning mechanism 3 is adjusted to place a wound ceramic fiber yarn tube on the first fiber tube rack 12 on the wire-releasing mechanism 1, and the second tensioning mechanism 4 is adjusted to place two fiber paper tubes 30 that are not wound with ceramic fiber yarns 40 on the second fiber tube racks 22 on the two wire-collecting mechanisms 2, respectively. The operator guides the ceramic fiber yarns 40 in the ceramic fiber yarn tube on the first fiber tube rack 12 to a first pulling guide wheel 11 of the wire-releasing seat 10 after passing through the first guide wheel 12 and the first tension rod 13 in sequence, and then starts from the first pulling guide wheel 11 on the wire-releasing seat 10 to divide the ceramic fiber yarns 40 into two parts, and guide the two parts of the ceramic fiber yarns 40 to the two second pulling guide wheels on the wire-collecting seat 20, respectively. The ceramic fiber yarn 40 is guided onto the guide wheel 21, and then the ceramic fiber yarn 40 on the two second pulling guide wheels 21 is respectively guided to the two wire collecting mechanisms 2, and the ceramic fiber yarn 40 passes through the counting wheel 261, the second guide wheel 25 and the second tension rod 24 on the wire collecting mechanism 2 and reaches the wire guide rack 23, and then the ceramic fiber yarn 40 is guided by the wire guide rack 23 to the fiber paper tube 30 on the second fiber tube rack 22 for wire separation. When the counting wheel 261 reaches the preset value, the buzzer 263 sounds an alarm and transmits the alarm signal to the control system. After receiving the signal, the control system controls the first fiber tube rack 12, the second fiber tube rack 22 and the wire guide rack 23 to stop working, and the operator cuts the ceramic fiber yarn 40 to complete the wire separation.

[0046] When it is necessary to combine two wound ceramic fiber yarn tubes into a ceramic fiber yarn tube with different lengths, such as Figure 2As shown, the first tensioning mechanism 3 is adjusted to place two wound ceramic fiber yarn tubes on the first fiber tube rack 12 on the wire-releasing mechanism 1 respectively, and the second tensioning mechanism 4 is adjusted to place a fiber paper tube 30 that is not wound with ceramic fiber yarn 40 on the second fiber tube rack 22 on the wire-collecting mechanism 2. The operator guides the ceramic fiber yarn 40 in the ceramic fiber yarn tube on one of the first fiber tube racks 12 to one of the first pulling guide wheels 11 of the wire-releasing seat 10 after passing through the corresponding first guide wheel 12 and the first tension rod 13 in sequence, and then guides it from one of the first pulling guide wheels 11 on the wire-releasing seat 10 to a second pulling guide wheel 21 of the wire-collecting seat 20, and guides the ceramic fiber yarn 40 in the ceramic fiber yarn tube on the other second fiber tube rack 12 to the corresponding first guide wheel 12 and the first tension rod 13 in sequence. 13 is then guided to another first pulling guide wheel 11 of the wire release seat 10, and then from another first pulling guide wheel 11 on the wire release seat 10 to another second pulling guide wheel 21 of the wire collection seat 20, and then the two groups of ceramic fiber yarns 40 on the two second pulling guide wheels 21 are merged together and guided to the wire collection mechanism 2, and the merged ceramic fiber yarns 40 pass through the counting wheel 261, the second guide wheel 25 and the second tension rod 24 on the wire collection mechanism 2 and then reach the wire guide rack 23, and then the wire guide rack 23 guides the merged ceramic fiber yarns 40 to the fiber paper tube 30 on the second fiber tube rack 22 to carry out the wire drawing work, when the counting wheel 261 reaches the preset value, the control system controls the first fiber tube rack 12, the second fiber tube rack 22 and the wire guide rack 23 to stop working, and the operator cuts the ceramic fiber yarns 40 to complete the wire drawing work. It should be noted that, the utility model only takes two groups of wire-releasing mechanisms 1 and two groups of wire-collecting mechanisms 2 as an example, and multiple groups of wire-releasing mechanisms 1 and multiple groups of wire-collecting mechanisms 2 can be set according to actual needs. Accordingly, the number of the first pulling guide wheels 11 and the second pulling guide wheels 21 can be set corresponding to the number of the wire-releasing mechanisms 1 and the wire-collecting mechanisms 2.

[0047] The wire dividing and winding device of the utility model has a simple structure and is easy to operate. By arranging at least two wire releasing mechanisms 1 on the wire releasing seat 10 and at least two wire collecting mechanisms 2 on the wire collecting seat 20, the wire dividing or winding operation of the ceramic fiber yarn 40 can be realized, and a ceramic fiber yarn tube can be divided into different meters or multiple ceramic fiber yarn tubes can be combined into a ceramic fiber yarn tube with more meters, thereby improving the degree of automation and production efficiency of the equipment, reducing damage to the fiber, improving product quality, and meeting the different needs of customers.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic fiber splitting and doubling device, characterized in that: It includes a wire-releasing seat provided with at least two wire-releasing mechanisms and a wire-collecting seat provided with at least two wire-collecting mechanisms, the wire-releasing mechanism being provided with a first fiber tube rack for placing fiber paper tubes, a first tension rod and a first guide wheel, the wire-collecting mechanism being provided with a second fiber tube rack for placing fiber paper tubes, a wire guide rack, a second tension rod, a second guide wheel and a counting mechanism, the counting mechanism comprising a counting wheel arranged on the wire-collecting seat, a counting table electrically connected to the counting wheel and a buzzer, the first fiber tube rack being provided with a first tensioning mechanism for tensioning or loosening the fiber paper tube, the wire-releasing seat being provided with a plurality of first pulling guide wheels, the wire-collecting seat being provided with a plurality of second pulling guide wheels, the ceramic fiber yarn passing through the first fiber tube rack, the first guide wheel, the first tension rod, the first pulling guide wheel, the second pulling guide wheel, the counting wheel, the second guide wheel, the second tension rod and the wire guide rack in sequence and being guided to the second fiber tube rack.

2. A ceramic fiber splitting and doubling device according to claim 1, characterized in that: The second fiber tube rack has the same structure as the first fiber tube rack. The second fiber tube rack is provided with a second tensioning mechanism for tensioning or loosening the fiber paper tube. The second tensioning mechanism has the same structure as the first tensioning mechanism.

3. The ceramic fiber splitting and doubling device according to claim 1, characterized in that: The wire guide frame includes a traction seat provided with a slide groove, a wire guide seat inserted into the slide groove and slidably matched with the traction seat, a plurality of wire guide rollers arranged on the wire guide seat, a pressure roller seat arranged at both ends of the traction seat, and a pressure roller arranged on the pressure roller seat.

4. The ceramic fiber splitting and doubling device according to claim 1, characterized in that: The first tensioning mechanism includes a movable sleeve movably arranged on the wire release seat, the first fiber tube rack is sleeved on the movable sleeve, the movable sleeve is provided with movable sleeve wheels at both ends corresponding to the first fiber tube rack, the movable sleeve wheels are fixedly connected to the movable sleeve, and two spring mounting grooves are respectively formed between the two axial ends of the movable sleeve wheels corresponding to the first fiber tube rack, and springs are sleeved in the spring mounting grooves.

5. The ceramic fiber splitting and doubling device according to claim 4, characterized in that: The first tensioning mechanism also includes a handle for controlling the movement of the movable sleeve, the handle is rotatably arranged on the wire-releasing seat through a fixed seat, one end of the handle passes through the fixed seat and extends to an end of the movable sleeve close to the wire-releasing seat, an eccentric wheel is fixedly connected to the end of the handle close to the movable sleeve, the eccentric wheel rests on the movable sleeve, and the middle part of the handle is connected to the internal thread of the fixed seat.

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