Rotor spinning device equipped with a twist holding element

Abstract

The present invention belongs to the field of rotor spinning equipment, and provides a rotor spinning device equipped with a twist maintaining element, including a rotor housing, a support plate, a rotor, a rotating shaft, a twist maintaining element, a cover, and a single fiber delivery tube. A clamping groove is provided on the docking surface of the cover and the housing, and a U-shaped gasket is arranged in the clamping groove. A collection pad is arranged in the gasket. The rotating shaft penetrates the rotor from the inside to the outside, and a diversion section is arranged towards the twist maintaining element. An inner mounting part and an outer mounting part are arranged at the center of the cover. The inner mounting part and the outer mounting part are nested and matched. The twist maintaining element includes an inner twisting tube and an outer twisting tube that penetrate the centers of the inner mounting part and the outer mounting part. Both the inner twisting tube and the outer twisting tube are of T-shaped structure. A universal tensioning assembly that cooperates with the twist maintaining element is arranged on the outer end surface of the cover. The device is reasonably designed, has a good guiding effect, is convenient to adjust, is beneficial to ensuring the quality of the yarn and the quality of the bobbin, and is suitable for large-scale popularization.

Description

Technical Field

[0001] The present invention belongs to the field of rotor spinning equipment and relates to a rotor spinning device equipped with a twist retaining element. Background Art

[0002] Rotor spinning is called rotor spinning because a rotor is used to agglomerate single fibers. Initially, air flow was mainly used in rotor spinning, and it is also called air-jet spinning in China. Rotor spinning has a high spinning speed, a large winding capacity, and good spinnability for low-grade cotton and waste cotton. Rotor spinning is suitable for many products, such as corduroy, denim, khaki, yarn-dyed velvet, printed velvet, woolen blanket, cotton blanket, bath towel, and decorative fabric, etc. The working principle of rotor spinning is that the fed fiber sliver is opened into single fibers by a rotating carding roller covered with card clothing. The single fibers are transported by air flow to the inner wall of the high-speed rotating rotor. Due to the relatively high surface speed of the inner wall of the rotor, the fibers are arranged parallel to the circumferential direction of the inner wall and form a yarn tail in the condensing groove, and at the same time, they are twisted into yarn and led out, and directly wound into a bobbin. According to the way of generating negative pressure in the rotor, rotor spinning can be divided into two categories: self-exhaust type and air-extraction type. Among them, the self-exhaust type spinning device has several exhaust holes opened at the bottom side of the rotor. When the rotor rotates at a high speed, a centrifugal pump-like effect is generated to make the inside of the rotor have negative pressure. The air flow inside the self-exhaust rotor mainly replenishes from the fiber conveying pipe and discharges from the small holes at the bottom side after passing through the cotton condensing groove.

[0003] The existing patent CN1978719B discloses a rotor spinning device, which includes a cover for enclosing the rotor housing. A replaceable slotted plate adapter is installed inside the cover, through which fiber supply and doffing are carried out. Doffing is carried out through a doffing nozzle and at least one twist retaining element arranged behind and easy to replace. There is a doffing hole basically located at the central position on the twist retaining element, and the twist retaining element can be directly inserted into the slotted plate adapter. However, the problems existing in this device include: firstly, after the single fibers enter the rotor under the action of negative pressure, a part of the capillary fibers carried by them will inevitably enter between the rotor and the rotor housing, and these capillary fibers adhere to the inner wall of the rotor housing and will move towards the axis position of the rotor, which will increase the resistance of the rotor movement; secondly, there is a situation of yarn running when the yarn tail enters the twist retaining element from the opposite side of the twist retaining element and the rotor, which is likely to affect the continuity of the yarn tail; secondly, the length of the twist retaining element is not adjustable, and the included angle on the path from the twist retaining element to the yarn bobbin after the yarn tail is drawn out from the twist retaining element is small, and the pressure near the bobbin of the yarn is large, which will affect the uniformity of the yarn winding into the bobbin. Summary of the Invention

[0004] In view of the above technical problems existing in the rotor spinning equipment, the present invention provides a rotor spinning device equipped with a twist retaining element, which has reasonable design, good guiding effect, is easy to adjust, and is beneficial to ensuring the quality of the yarn and the quality of winding into the bobbin.

[0005] To achieve the above object, the technical solution adopted by the present invention is that the rotor spinning device equipped with a twist holding element provided by the present invention includes a rotor housing, a support plate is arranged outside the rotor housing, a rotor is arranged inside the rotor housing, a rotating shaft drivingly connected thereto is arranged at the center of the rotor, a twist holding element is arranged on the opposite side of the rotor, the twist holding element is arranged on a cover, the cover is butted against the rotor housing and connected by bolts through flange holes, a single fiber delivery pipe penetrating into the inside of the cover from the outside and extending towards the end of the rotor is arranged on the cover, a clamping groove is arranged on the butting surface of the cover and the housing, a U-shaped sealing gasket is arranged in the clamping groove, a collecting gasket is arranged in the sealing gasket, the cross section of the collecting gasket is T-shaped and a plurality of uniformly distributed collecting anvil units are arranged on the curved surface facing the center of the rotor, the rotating shaft penetrates through the rotor from the inside to the outside and a guiding section is arranged towards the twist holding element, the guiding section is a hemisphere, an inner mounting member and an outer mounting member are arranged at the center of the cover, the inner mounting member and the outer mounting member are nested and matched, the twist holding element includes an inner twisting pipe penetrating through the centers of the inner mounting member and the outer mounting member, an outer twisting pipe telescopically adjusted and matched with the inner twisting pipe is arranged at the center of the inner twisting pipe, both the inner twisting pipe and the outer twisting pipe are T-shaped structures, and a universal tensioning assembly matched with the twist holding element is arranged on the outer end surface of the cover.

[0006] Preferably, the inner mounting member includes an inner end cover, a clamping section with a Z-shaped cross section is arranged at the edge of the inner end cover, a clamping groove matched with the clamping section is arranged on the inner surface of the cover, and a first ring protrusion and a second ring protrusion concentrically distributed are arranged on the front end surface of the inner end cover.

[0007] Preferably, the outer mounting member includes a bell-shaped cover clamped with the cover, the end of the bell-shaped cover is inserted into a structural groove on the cover, a first ring groove and a second ring groove concentrically distributed are arranged on the side of the bell-shaped cover facing the inner end cover, and a plurality of cushion pads distributed in layers are arranged between the first ring protrusion and the first ring groove.

[0008] Preferably, a plurality of core pipes are arranged inside the second ring groove, a magnetic core threadedly connected thereto is arranged in the core pipe, the magnetic core penetrates through the end surface of the bell-shaped cover and is matched with a positioning iron arranged inside the outer twisting pipe.

[0009] Preferably, the universal tensioning assembly includes a transmission housing, a gear ring and a gear are arranged inside the transmission housing, a clamping ring is arranged outside the gear ring, a semi-ring plate hinged thereto is arranged on the clamping ring, a connecting shaft is arranged in the middle of the semi-ring plate, a connecting block is rotatably arranged on the connecting shaft, a rotary joint is arranged at the end of the connecting block, a connecting head is arranged at the end of the rotary joint, and a guiding hole for threading the yarn is arranged on the connecting head.

[0010] Preferably, a ratchet piece that rotates coaxially with the shaft end of the gear is provided. A ratchet pawl is provided on the transmission side of the ratchet piece, and one end of the ratchet pawl is fixedly connected to the transmission housing.

[0011] Preferably, a retaining ring is fixedly provided on the inner wall of the cover, and the retaining ring is movably butted against the end of the rotor cup.

[0012] Preferably, annular clamping ports are provided on the two side walls of the sealing gasket, and the clamping ports cooperate with the positioning protrusions provided on both sides of the collecting gasket.

[0013] Preferably, the gap between adjacent collecting anvil units is 1-5 mm, and a number of needle tip patterns are provided on the surface of the collecting anvil units.

[0014] Preferably, a number of balance holes are provided on the side surface of the rotor cup housing.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. The rotor spinning device equipped with a twist maintaining element provided by the present invention can improve the sealing performance of the docking surface between the cover and the rotor cup housing by using the sealing gasket. The collecting gasket clamped by the sealing gasket can effectively collect capillary fibers, which is beneficial to ensuring the flexibility of the rotor cup movement; by using the guiding section in cooperation with the inner twisting tube, the probability of yarn running can be reduced to ensure the continuity of the output yarn tail; the inner twisting tube and the outer twisting tube of the twist maintaining element can be telescopically adjusted, and the multiple degrees of freedom of the universal tensioning assembly can be effectively adjusted under manual control, so that the yarn has a reasonable angle and pressure during the winding process to ensure the uniformity of the yarn winding. This device is reasonably designed, has good guiding effect, is easy to adjust, is beneficial to ensuring the yarn quality and the winding quality, and is suitable for large-scale popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 An isometric view of the rotor spinning device equipped with a twist maintaining element provided for the embodiment;

[0019] Figure 2 An isometric view of the rotor spinning device equipped with a twist maintaining element provided for the embodiment in another direction;

[0020] Figure 3 A front view of the rotor spinning device equipped with a twist maintaining element provided for the embodiment;

[0021] Figure 4 A cross-sectional view of a rotor spinning device equipped with a twist holding element in the EE direction;

[0022] Figure 5 A cross-sectional view of a rotor spinning device equipped with a twist holding element in the GG direction;

[0023] Figure 6 for Figure 4 A magnified schematic diagram of the structure in the middle;

[0024] Figure 7 for Figure 4 A magnified schematic diagram of structure B in the middle;

[0025] Figure 8 An axonometric view of a collection pad is provided for an embodiment;

[0026] Figure 9 An axonometric view of a universal tensioning assembly provided in an embodiment;

[0027] Figure 10 A working diagram of a ratchet plate and a ratchet pawl provided in an embodiment;

[0028] In the above figures, 1, rotor shell; 2, cover; 3, rotor; 4, shaft; 41, guide section; 5, twisting holding element; 51, inner twisting tube; 52, outer twisting tube; 6, single fiber conveying tube; 7, sealing pad; 8, collecting pad; 81, collecting anvil unit; 82, positioning protrusion; 9, inner mounting part; 91, inner end cover; 92, clamping section; 93, first ring protrusion; 94, second ring protrusion; 10, outer mounting part; 101, bell cover; 102, first ring Groove; 103, second annular groove; 104, buffer pad; 105, core tube; 106, magnetic core; 107, positioning iron; 11, universal tensioning assembly; 111, transmission housing; 112, gear ring; 113, gear; 114, reinforcing ring; 115, semi-ring plate; 116, connecting block; 117, rotating joint; 118, connecting head; 119, guide hole; 1110, ratchet plate; 1111, pawl; 12, guard ring; 13, balance hole; 14, support plate. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0031] Examples, such as Figures 1 to 10 As shown, the present invention provides a rotor spinning device equipped with a twist holding element, comprising a rotor housing 1, a support plate 14 is arranged on the outside of the rotor housing 1, a rotor 3 is arranged inside the rotor housing 1, a rotating shaft 4 is arranged at the center of the rotor 3 and is connected to the rotor 3, a twist holding element 5 is arranged on the opposite side of the rotor 3, and the twist holding element 5 is arranged on the cover 2, the cover 2 is docked with the rotor housing 1 and is connected with bolts through flange holes, and a single fiber conveying tube 6 is arranged on the cover 2, which penetrates into the cover 2 from the outside to the inside and extends toward the end of the rotor 3. Among them, the support plate 14 is used to support the device and serves as a supporting basis to connect the device with the workshop textile equipment; the single fiber conveying tube 6 serves as a transmission channel to allow the single fiber to be orderly conveyed to the inside of the rotor 3, and the rotor 3 rotating at high speed performs subsequent twisting operations. In order to improve the spinning efficiency of the rotor 3, the present invention provides a clamping groove on the joint surface of the cover 2 and the outer shell, a U-shaped sealing gasket 7 is arranged in the clamping groove, a collecting pad 8 is arranged in the sealing gasket 7, the cross-section of the collecting pad 8 is T-shaped and a plurality of evenly distributed collecting anvil units 81 are arranged on the curved surface thereof facing the center of the rotor 3, the rotating shaft 4 penetrates the rotor 3 from the inside to the outside and a guide section 41 is arranged toward the twisting retaining element 5, the guide section 41 is a hemisphere, an inner mounting part 9 and an outer mounting part 10 are arranged at the center of the cover 2, the inner mounting part 9 and the outer mounting part 10 are nested and matched, the twisting retaining element 5 includes an inner twisting tube 51 that penetrates the centers of the inner mounting part 9 and the outer mounting part 10, an outer twisting tube 52 that cooperates with the telescopic adjustment thereof is arranged at the center of the inner twisting tube 51, both the inner twisting tube 51 and the outer twisting tube 52 are T-shaped structures, and a universal tensioning assembly 11 that cooperates with the twisting retaining element 5 is arranged on the outer end face of the cover 2.

[0032] Specifically, the gasket 7 can improve the sealing performance of the docking surface between the cover 2 and the rotor housing 1. The collecting pad 8 clamped by the gasket 7 can effectively collect the capillary fibers, and the surface where the collecting anvil unit 81 is located has sufficient span and coverage. After intercepting the capillary fibers, it can prevent these capillary fibers from being stuffed into the vicinity of the driving node of the rotor 3 in a large area, which is beneficial to ensuring the flexibility of the movement of the rotor 3. Moreover, after the cover 2 and the rotor housing 1 are disconnected by bolts, the collecting pad 8 can be replaced to quickly process the capillary fibers. The convex surface of the guiding section 41 cooperates with the end of the inner twisting tube 51, which can make the yarn move more effectively towards the outer twisting tube 52 in a negative pressure environment, reducing the probability of yarn running and ensuring the continuity of the output yarn tail. In order to improve the utilization rate of the device, the inner twisting tube 51 and the outer twisting tube 52 provided by the present invention are telescopically adjustable. The connection method of the telescopic node can be plug-in or threaded connection. In this way, the path length of the yarn falling sand can be directly changed, and the universal tensioning assembly 11 can be effectively adjusted by manual control outside the cover 2, and the twisted yarn is passed through its waist-shaped hole, so that the yarn has a reasonable angle and pressure during the winding process, ensuring the uniformity of the yarn winding, thereby improving the yarn quality and the winding quality.

[0033] To improve the installation efficiency of the inner installation part 9, the inner installation part 9 provided by the present invention includes an inner end cover 91. The center of the inner end cover 91 is threadedly connected to the twisting holding element 5, and a clamping section 92 with a Z-shaped cross-section is arranged at its edge. A clamping groove matching the clamping section 92 is arranged on the inner surface of the cover 2, and a first ring convex 93 and a second ring convex 94 are concentrically distributed on the front end surface of the inner end cover.

[0034] Matched with the inner installation part 9, the outer installation part 10 provided by the present invention includes a bell-shaped cover 101 clamped to the cover 2. The end of the bell-shaped cover 101 is inserted into the structural groove on the cover 2. A first ring groove 102 and a second ring groove 103 are concentrically distributed on the side of the bell-shaped cover 101 facing the inner end cover 91. A plurality of buffer pads 104 are arranged between the first ring convex 93 and the first ring groove. The first ring convex 93 and the second ring convex 94 are used to nest with the first ring groove 102 and the second ring groove 103. The buffer pads 104 provide pressure buffering for the inner installation part 9 and the outer installation part 10, which is beneficial to ensuring the stability of their nested cooperation and preventing the twisting holding element 5 from moving around and affecting the wire output quality.

[0035] To facilitate the adjustment of the utilization rate of the twisting and holding element 5, in addition to the adjustable combined length of the inner twisting tube 51 and the outer twisting tube 52 in the present invention, a structure for ensuring the stability of the outer twisting tube 52 is provided on the outer mounting member 10. For example, a plurality of core tubes 105 are provided inside the second annular groove, and a magnetic core 106 threadedly connected thereto is provided in the core tube 105. The magnetic core 106 penetrates the end face of the bell-shaped cover 101 and cooperates with a positioning iron 107 provided inside the outer twisting tube 52. Among them, the screwing depth of the magnetic core 106 in the core tube 105 is inversely proportional to its exposed length, and the exposed length can support the elongated twisting and holding element 5. At the same time, connection reliability is obtained through the adsorption between the magnetic core 106 and the positioning iron 107.

[0036] To improve the utilization rate of the universal tensioning assembly 11, the universal tensioning assembly 11 provided by the present invention includes a transmission housing 111. A gear ring 112 and a gear 113 are provided inside the transmission housing 111. A clamping ring 114 is provided outside the gear ring 112. A half-ring plate 115 hinged thereto is provided on the clamping ring 114. A connecting shaft is provided in the middle of the half-ring plate 115. A connecting block 116 is rotatably provided on the connecting shaft. A rotary joint 117 is provided at the end of the connecting block 116. A connecting head 118 is provided at the end of the rotary joint 117. A guiding hole 119 for threading the yarn is provided on the connecting head 118. Among them, the tooth shaft of the gear 113 is fixed to the end of the cover 2. By rotating the half-ring plate 115, it can rotate together with the clamping ring 114 with the meshing of the gear ring 112 and the gear 113. At the same time, the connecting block 116 can rotate around the connecting shaft, and the connecting head 118 can rotate around the rotation center of the rotary joint 117. In this way, relatively comprehensive and controllable degrees of freedom can be obtained, so that the yarn can obtain an angle that meets the production requirements under different combination parameters of the twisting and holding element 5 and the universal tensioning assembly 11, thereby ensuring the quality of the wound yarn.

[0037] To ensure the stability of the gear 113 and the gear ring 112, a ratchet plate 1110 rotating coaxially therewith is provided at the shaft end of the gear 113. A ratchet pawl 1111 is provided on the driving side of the ratchet plate 1110. One end of the ratchet pawl 1111 is fixedly connected to the transmission housing 111. The end of the ratchet pawl 1111 that cooperates with the ratchet plate 1110 can change different ratchet teeth as the ratchet plate rotates, and the rotation direction is single and cannot be reversed. The reverse is blocked by the ratchet pawl. Unless manually adjusted, the meshing angle between the gear ring 112 and the gear 113 remains unchanged under the cooperation of the ratchet plate and the ratchet pawl, so that the half-ring plate 115 and the connecting head, etc. are kept in a relatively stable state.

[0038] In order to improve the continuity of single fibers entering the rotor 3, a retaining ring 12 is fixedly arranged on the inner wall of the cover 2 in the present invention. The single fiber conveying pipe 6 passes through the retaining ring and is connected to the negative pressure space of the rotor 3. The retaining ring 12 is movably butted with the end of the rotor 3, providing a relatively sealed adjustment for the negative pressure space, so that the single fibers can continuously and stably enter the negative pressure environment when entering the rotor 3.

[0039] In order to facilitate the disassembly and assembly of the collection pad 8, annular clamping ports are arranged on the two side walls of the sealing pad 7 provided in the present invention. The clamping ports cooperate with the positioning protrusions 82 arranged on both sides of the collection pad 8. After the sealing pad 7 and the collection pad 8 are quickly combined, they can be kept stable under the clamping pressure of the cover 2 and the rotor housing 1. The positioning protrusions 82 and the clamping ports increase the force-bearing area and force-bearing direction between the sealing pad 7 and the collection pad 8, and no additional connecting parts are needed for connection, which is convenient for disassembly and combination.

[0040] In order to improve the collection efficiency of capillary fibers, the gap between adjacent collection anvil units 81 provided in the present invention is 1-5 mm. A number of needle tip patterns are arranged on the surface of the collection anvil unit 81. By controlling the distribution density of the collection anvil units 81 and the structure on the surface of the collection anvil units 81, the capillary fibers passing through its coverage range can be effectively intercepted, so as to avoid the capillary fibers being disorderly distributed between the rotor housing 1 and the rotor 3.

[0041] In order to improve the stability of the air pressure of the present device, the negative pressure air in the present device can be replaced through the single fiber conveying pipe 6, and a number of balance holes 13 are arranged on the side surface of the rotor housing 1 to balance the pressure generated outside the rotor 3 due to its rotation, and at the same time, it is also beneficial to further control the distribution of capillary fibers.

[0042] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A rotor spinning device equipped with a twist holding element, comprising a rotor housing, a support plate is arranged outside the rotor housing, a rotor is arranged inside the rotor housing, a rotating shaft drivingly connected thereto is arranged at the center of the rotor, a twist holding element is arranged on the opposite side of the rotor, the twist holding element is arranged on a cover, the cover is docked with the rotor housing and connected by bolts through flange holes, and a single fiber delivery pipe penetrating into the inside of the cover from the outside and extending towards the end of the rotor is arranged on the cover, characterized in that, The butt joint surface between the cover and the outer shell is provided with a clamping groove, in which a U-shaped sealing gasket is arranged. A collecting gasket is arranged in the sealing gasket. The cross section of the collecting gasket is T-shaped, and several uniformly distributed collecting anvil units are arranged on the curved surface facing the center of the rotor cup. The rotating shaft penetrates through the rotor cup from the inside to the outside, and a guiding section is arranged on the side facing the twisting and holding element. The guiding section is a hemisphere. An inner mounting part and an outer mounting part are arranged at the center of the cover. The inner mounting part and the outer mounting part are nested and matched. The twisting and holding element includes an inner twisting tube penetrating through the centers of the inner mounting part and the outer mounting part. An outer twisting tube which is telescopically adjusted and matched with the inner twisting tube is arranged at the center of the inner twisting tube. Both the inner twisting tube and the outer twisting tube are of T-shaped structures. A universal tensioning assembly matched with the twisting and holding element is arranged on the outer end surface of the cover; The universal tensioning assembly includes a transmission shell, in which a gear ring and a gear are arranged on the inner side. A clamping ring is arranged on the outer side of the gear ring. A semi-circular plate hinged to the clamping ring is arranged on the clamping ring. A connecting shaft is arranged in the middle of the semi-circular plate. A connecting block is rotatably arranged on the connecting shaft. A rotary joint is arranged at the end of the connecting block. A connecting head is arranged at the end of the rotary joint. A guiding hole for threading the yarn is arranged on the connecting head. A ratchet piece rotating coaxially with the shaft end of the gear is arranged at the shaft end of the gear. A ratchet pawl is arranged on the driving side of the ratchet piece. One end of the ratchet pawl is fixedly connected with the transmission shell.

2. The rotor spinning device equipped with a twist holding element according to claim 1, characterized in that, The inner mounting part includes an inner end cover. A clamping section with a Z-shaped cross section is arranged at the edge of the inner end cover. A clamping groove matched with the clamping section is arranged on the inner surface of the cover. A first ring convex and a second ring convex which are concentrically distributed are arranged on the front end surface of the inner end cover.

3. The rotor spinning device equipped with a twist holding element according to claim 2, characterized in that, The outer mounting part includes a bell-shaped cover clamped with the cover. The end of the bell-shaped cover is inserted into the structural groove on the cover. A first ring groove and a second ring groove which are concentrically distributed are arranged on the side of the bell-shaped cover facing the inner end cover. A plurality of buffer pads distributed in layers are arranged between the first ring convex and the first ring groove.

4. The rotor spinning device equipped with a twist holding element according to claim 3, characterized in that, A plurality of core tubes are arranged inside the second ring groove. A magnetic core threadedly connected with the core tube is arranged in the core tube. The magnetic core penetrates through the end surface of the bell-shaped cover and is matched with a positioning iron arranged inside the outer twisting tube.

5. The rotor spinning device equipped with a twist holding element according to claim 1, characterized in that, A protective ring is fixedly arranged on the inner wall of the cover. The protective ring is movably butted with the end of the rotor cup.

6. The rotor spinning device equipped with a twist holding element according to claim 1, characterized in that, Annular clamping openings are arranged on the two side groove walls of the sealing gasket. The clamping openings are matched with the positioning protrusions arranged on both sides of the collecting gasket.

7. The rotor spinning device equipped with a twist holding element according to claim 1, characterized in that, The gap between adjacent collecting anvil units is 1-5 mm. A plurality of needle tip patterns are arranged on the surface of the collecting anvil units.

8. The rotor spinning device equipped with a twist holding element according to claim 1, characterized in that, A plurality of balance holes are arranged on the side surface of the rotor cup housing.

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