Spinning frame drafting regulation and control mechanism uniform in drafting

Abstract

The invention relates to the technical field of drafting mechanisms, and discloses a spinning frame adjusting and controlling drafting mechanism uniform in drafting, which comprises a supporting fixed ring and a movable ring assembly arranged on the outer ring of the supporting fixed ring in a sleeving manner, according to the scheme, the drafting mechanism is adopted, part of traction force borne by an instantaneous drafting point position is shared to a yarn area between the drafting mechanism and the rapid roller, yarn products are evenly drafted, and the yarn breaking phenomenon can be avoided; according to the scheme, the resistance adjusting assembly is designed to serve as an auxiliary assembly capable of enabling the movable ring assembly to rotate, and when the rotating scheme of the movable ring assembly on the supporting fixed ring is blocked, the scheme that the supporting plate rotates on the annular limiting edge can be adopted for replacing the scheme, or the two schemes are used at the same time to be matched; and the operation smoothness of the drafting mechanism is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drafting mechanisms, and in particular to a regulating and controlling drafting mechanism of a spinning frame with uniform drafting. Background Art

[0002] In a spinning machine, when the yarn is drafted, the drafted yarn between the front roller with a fast drafting speed and the middle roller with a slow drafting speed, near the middle roller, will be at an instantaneous drafting point due to the instantaneous change in drafting speed. Because the instantaneous drafting point is drafted too quickly, the low-density area of ​​the yarn is more likely to be thinner than the high-density area due to the drafting, and the low-density area of ​​the yarn is easily stretched rapidly due to the instantaneous drafting. Under the rated drafting efficiency, the drafting degree of the high-density area is much lower than that of the low-density area, and there is a probability of yarn breakage. The difference in fiber length and hook length is also easily affected by the instantaneous drafting, resulting in uneven drafting of the yarn product.

[0003] The Chinese invention patent with the authorization announcement number CN103774299B: A drafting system for a ring spinning frame discloses that a tension controller and a lower pin are arranged between the middle roller and the front roller, and together with the middle roller and the front roller, a rigid and flexible friction force boundary is formed to control the movement of the fiber, so that the additional friction force boundary distribution in the main drafting area is more reasonable, which has the beneficial effect of increasing the utilization rate of short fibers;

[0004] The Chinese utility model patent with the authorization announcement number CN221608275U: A drafting device of a spinning frame, which includes a first fixed plate of the drafting device, a screw hole of the fixed plate, a first slide bar of the drafting device, a slide bar moving fixed plate, a slide bar entrance and a second fixed plate of the drafting device. When the device is operated, the wire to be pulled is placed on the surface of the drafting device storage table and fixed by the fine wire fixing groove and the fine wire auxiliary fixing groove, and then the pulling work can be carried out by the slide bar mechanism, which has the beneficial effect of rapid drafting without jamming;

[0005] Chinese utility model patent with authorization announcement number CN217479632U: A spinning frame drafting device discloses a support plate, a top plate arranged at the upper end of the support plate and a bottom plate at the lower end, a wiring box is fixedly installed on the top plate, a wiring box is provided with a wire inlet on one side and a wire outlet on the other side, a pressure regulating assembly for adjusting the yarn pressure and a finishing assembly for adjusting the surface flatness of the yarn are installed on the top of the wiring box. The utility model can adjust the tension of the yarn according to actual needs by arranging the wiring box and the pressure regulating assembly, so as to prevent the problem of yarn winding around rollers or yarn breakage caused by uneven tension during yarn drafting.

[0006] The above patents have respectively improved the utilization rate, smoothness and tension uniformity of short fibers in the yarn drafting process of the spinning frame, but the spinning frame of the prior art cannot make reasonable adjustments and improvements to the instantaneous drafting point of the yarn to solve the technical problem of uneven yarn drafting. Therefore, the field urgently needs a spinning frame drafting control mechanism with uniform drafting to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a spinning frame regulating and controlling drafting mechanism with uniform drafting, so as to solve the technical problem that the spinning frame in the prior art cannot reasonably adjust and improve the instantaneous drafting point of the yarn to solve the uneven drafting of the yarn.

[0008] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a uniform drafting spinning frame control drafting mechanism, comprising a supporting fixed ring, a dynamic ring assembly sleeved on the outer ring of the supporting fixed ring; the dynamic ring assembly comprises a plurality of spliced ​​components connected end to end in a ring array; the spliced ​​components comprise a support block, a ring matching groove is provided at one end of the support block, the opening trajectory of the ring matching groove is arc-shaped, the supporting fixed ring can be installed into the ring matching groove, a yarn passing groove is provided at one end of the support block away from the ring matching groove, and an installation groove is provided through the middle of the support block; in the installation groove, a fixing plate, a spring, a piston, and a second spring plate are installed in sequence from the middle of the installation groove to one end of the installation groove, and the second spring plate is away from the installation groove. One end of the middle of the mounting groove is located outside the mounting groove, and an end retaining ring is fixedly connected to one end of the mounting groove near the second elastic sheet. The fixing sheet, spring, piston, and second elastic sheet are fixedly connected end to end in sequence, the fixing sheet is fixedly connected to the inner wall of the mounting groove, and the piston is piston-connected to the inner wall of the mounting groove. A through hole is penetrated through the fixing sheet, and the second elastic sheet is fixedly connected to the end face of the adjacent support block away from the middle of the mounting groove. All support blocks are connected end to end by the second elastic sheet to enclose and form a support profile of the dynamic ring assembly. The dynamic ring assembly is installed around the outer ring of the support fixed ring by using all the ring matching grooves; the bending radius of the support fixed ring is equal to the bending radius of the ring matching groove. Under the support of the second elastic sheet, the dynamic ring assembly can maintain a ring shape alone without the help of external force;

[0009] By adopting the above technical scheme, the drafting mechanism is installed as a whole on the yarn drafting path between the external slow roller and the external fast roller, the inner ring wall of the supporting fixed ring is fixedly connected to the spinning machine support frame by using the external fixed installation structure, the yarn is in close contact with the yarn passing groove, and passes through part of the moving ring assembly. Under the traction force of the fast roller, the friction between the yarn and the yarn passing groove can pull the moving ring assembly to rotate on the outer ring track of the supporting fixed ring, and the rotating axis is the axis of the supporting fixed ring. At this time, the yarn is stretched on one side and needs to overcome the resistance to the rotation of the moving ring assembly on the other side. At this time, the drafting mechanism and the fast roller are connected. The yarn area between the rollers has a high drafting efficiency compared to when the drafting mechanism is not installed. Since the drafting speed of the fast roller remains unchanged, the instantaneous traction force received by the instantaneous drafting point close to one end of the slow roller becomes smaller after the drafting mechanism is installed. The drafting mechanism is adopted in this scheme to distribute part of the traction force received by the instantaneous drafting point to the yarn area between the drafting mechanism and the fast roller, so that the yarn product is drafted evenly and the yarn breakage phenomenon is avoided. In the above-mentioned yarn drafting process, since the yarn is always kept in a taut state, the contact area with the moving ring assembly on the yarn is an effective contact area, In order to reduce the probability of sliding friction of the yarn in the effective contact area, the factors causing sliding friction are: the yarn is stretched in the effective contact area, while the length of the sliding friction area remains unchanged, and the process of increasing the length difference between the two will cause sliding friction; when the yarn is taut, sliding friction will cause wear to the fiber and affect the product quality. With the above scheme, when the yarn in the effective contact area is stretched and lengthened, the adjacent support blocks can use the spring to follow the deformation, and by increasing the spacing, the area and duration of the yarn sliding friction are reduced, thereby improving the product quality; in the spinning machine, the fast rollers are used to move the yarn When the yarn is stretched, the yarn near the slow roller end will be at an instantaneous stretching point due to the instantaneous change in stretching speed. Because the instantaneous stretching point is stretched too quickly, the low-density area of ​​the yarn is more likely to be stretched thinner than the high-density area, and the low-density area of ​​the yarn is easily stretched rapidly due to the instantaneous stretching, while the high-density area has a much lower stretching degree than the low-density area at the rated stretching efficiency, and there is a probability of yarn breakage. The difference in fiber length and hook length is also easily affected by the instantaneous stretching, resulting in uneven stretching of the yarn product.

[0010] As a preferred solution, a trumpet-shaped piece and a limiting ring piece are sequentially installed at one end of the fixing piece away from the second elastic piece, the edges of the trumpet-shaped piece and the limiting ring piece are fixedly connected to the inner wall of the mounting groove, the trumpet-shaped piece and the limiting ring piece are tightly attached, a vent hole in the same direction as the axis of the mounting groove is opened in the center of the trumpet-shaped piece, a plurality of spring-piece slits are opened in a circular array from the edge of the vent hole to the edge of the trumpet-shaped piece, the spring-piece slits divide the trumpet-shaped piece into the same number of first spring pieces as the spring-piece slits, the thickness of the trumpet-shaped piece is less than 1 mm, when air flows from the limiting ring piece to the fixing piece, the spring-piece slits can be increased by air pressure, so that the air can flow smoothly, when air flows from the fixing piece to the limiting ring piece, the spring-piece slits can be reduced by air pressure, the adjacent first spring pieces side edges are pressed against each other, and the air can only flow through the vent hole;

[0011] The adoption of the above technical solution can make the extension of the spring unlimited, that is, the distance between adjacent support blocks can be easily increased when pulled by the friction of the yarn, and when the piston is reset due to the elastic recovery of the spring, the amount of air that can be discharged from the vent hole per unit time is limited, so the function of slowing down the reset process of the distance between adjacent support blocks is achieved, which can enhance the stability of the dynamic ring assembly and eliminate the negative effect of vibration after the spring rebound.

[0012] As a preferred solution, the inner diameter of the ring matching groove is 1-5 mm larger than the outer tube diameter of the supporting fixed ring.

[0013] As a preferred solution, a support plate is fixedly connected to the inner ring wall of the support fixed ring, and an arcuate annular cover is fixedly connected to the edges of the side walls on both sides of the support plate respectively. The arcuate annular cover is cross-sectioned using a plane intersecting the axis of the arcuate annular cover, and the cross-sectional shape is an arc. The end of the arcuate annular cover away from the support plate is an annular limiting edge, and the annular limiting edge is close to the side wall of the support block. With the above solution, the annular limiting edges located on both sides of the support block play a limiting role, which can prevent the support block from making movements other than orbital rotation around the axis of the support fixed ring, and can further improve the stability of the drafting mechanism operation.

[0014] As a preferred embodiment, the drafting mechanism also includes a resistance adjusting component, the resistance adjusting component includes a mounting hole, a first end cover, a mounting rod, a second end cover, and an annular friction plate, the support plate having a mounting hole extending through the center of the support plate, the mounting hole being inserted and installed in the mounting rod, one end of the mounting rod being fixedly connected to the first end cover, the first end cover being close to one end of the mounting rod and tightly attached to the side wall of the support plate, the support plate being away from the first end cover and a second end cover being arranged on the side wall of the support plate away from the first end cover, the second end cover being close to one end of the support plate and tightly attached to the annular friction plate, the side wall of the mounting rod being away from the first end cover and having a threaded hole, the mounting rod being threadedly matched with the threaded hole by the threaded hole, and when the mounting rod reaches the deepest part of the threaded hole, the annular friction plate is tightly attached to the support plate, the threaded area on the mounting rod is equal to the threaded area in the threaded hole, and the first end cover being away from the mounting rod is fixedly connected to the spinning machine support frame body by an external fixed mounting structure; the second end cover is fixedly connected to the mounting rod The direction of thread tightening is the same as the direction in which the moving ring assembly rotates under the traction of the yarn; the above scheme can improve the problem that the coaxial rotation of the moving ring assembly on the supporting fixed ring is not smooth enough, and the resistance adjustment assembly is also used as an auxiliary assembly that can enable the moving ring assembly to rotate. When the rotation scheme of the moving ring assembly on the supporting fixed ring is stuck, the scheme of rotating the support plate on the annular limit edge can be used to replace it, or the two schemes can be used simultaneously to cooperate to improve the smoothness of the operation of the drafting mechanism; when it is necessary to adjust the resistance to the rotation of the moving ring assembly, the second end cover with annular friction plates of different thicknesses can be replaced, or the second end cover with annular friction plates of different materials can be replaced to change the friction between the annular friction plate and the support plate. The greater the friction between the annular friction plate and the support plate, the lower the smoothness of the rotation of the moving ring assembly, and the smaller the instantaneous drafting force on the instantaneous drafting point on the yarn is, which can be adjusted according to production needs.

[0015] As a preferred solution, a fixed pulley is provided on the yarn drafting path between the slow roller and the fast roller to change the drafting direction of the fast roller, which can be helpful in adapting to the structure of the existing spinning frame and reduce the modification cost.

[0016] As a preferred solution, the inner diameter of the ring matching groove is 3 mm larger than the outer tube diameter of the supporting fixed ring.

[0017] As a preferred solution, the annular friction plate is made of rubber.

[0018] As a preferred solution, the annular friction plate is made of resin.

[0019] As a preferred solution, the annular friction plate is made of metal.

[0020] Beneficial effects:

[0021] 1. This solution adopts a drafting mechanism to distribute part of the traction force received by the instantaneous drafting point to the yarn area between the drafting mechanism and the fast roller, so that the yarn product is drafted evenly and the yarn breakage phenomenon can be avoided;

[0022] 2. In this solution, when the yarn in the effective contact area is stretched and lengthened, the adjacent support blocks can utilize the spring to follow the deformation, and by increasing the spacing, the area and duration of the sliding friction of the yarn are reduced, thereby improving the product quality;

[0023] 3. This scheme designs a resistance adjustment component as an auxiliary component that can make the moving ring assembly rotate. When the moving ring assembly is stuck in the rotation scheme of supporting the fixed ring, it can be replaced by a scheme in which the support plate rotates on the annular limit edge, or the two schemes can be used simultaneously to improve the smoothness of the drafting mechanism operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the overall structure provided by Embodiment 1 of the present invention;

[0026] Figure 2 The overall structure disassembly diagram provided for Example 1 of the present invention;

[0027] Figure 3 A schematic diagram of the structure of the splicing components provided in Example 1 of the present invention;

[0028] Figure 4 A disassembled diagram of the splicing component structure provided in Example 1 of the present invention;

[0029] Figure 5 A right side cross-sectional view of the support plate, the arc-surface annular cover, and the annular limiting edge provided in Example 1 of the present invention;

[0030] Figure 6 An internal cross-sectional view of a splicing component provided in Example 1 of the present invention;

[0031] Figure 7 A schematic diagram of the overall structure provided for Embodiment 3 of the present invention;

[0032] Figure 8 A front oblique disassembly diagram of the overall structure provided in Example 3 of the present invention;

[0033] Fig. 9A rear oblique disassembly diagram of the overall structure provided in Example 3 of the present invention;

[0034] Fig.10 A schematic diagram of yarn drafting provided in Example 1 of the present invention;

[0035] Fig.11 This is a schematic diagram of yarn stretching provided in Example 2 of the present invention.

[0036] Description of reference numerals:

[0037] 100, drafting mechanism; 101, support plate; 102, arc-surface annular cover; 103, annular limiting edge; 104, support fixed ring; 201, moving ring assembly; 202, splicing component; 203, support block; 204, ring matching groove; 205, installation groove; 206, yarn passing channel; 207, limiting ring piece; 208, trumpet-shaped piece; 209, first spring piece; 210, spring piece gap; 2 11. vent hole; 212. fixing plate; 213. through hole; 214. spring; 215. piston; 216. end retaining ring; 217. second spring piece; 301. mounting hole; 302. first end cover; 303. mounting rod; 304. second end cover; 305. annular friction plate; 306. threaded hole; 401. slow roller; 402. fast roller; 403. yarn; 404. fixed pulley. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1-Figure 6 , Fig.10As shown, the drafting mechanism of the spinning frame with uniform drafting provided by Example 1 of the present invention includes a supporting fixed ring 104, a moving ring assembly 201 sleeved on the outer ring of the supporting fixed ring 104; the moving ring assembly 201 includes a plurality of splicing components 202 connected end to end in a ring array; the splicing component 202 includes a supporting block 203, and a ring matching groove 204 is opened at one end of the supporting block 203, and the opening trajectory of the ring matching groove 204 is arc-shaped, and the supporting fixed ring The ring 104 can be installed into the ring matching groove 204, and the support block 203 is provided with a yarn passing groove 206 at one end away from the ring matching groove 204, and the middle of the support block 203 is penetrated with a mounting groove 205; in the mounting groove 205, a fixing plate 212, a spring 214, a piston 215, and a second spring piece 217 are sequentially installed from the middle of the mounting groove 205 to one end of the mounting groove 205, and the second spring piece 217 is located at the end away from the middle of the mounting groove 205. The outside of the mounting groove 205 and the inside of the mounting groove 205 near the second elastic piece 217 are fixedly connected with an end retaining ring 216. The fixing plate 212, the spring 214, the piston 215, and the second elastic piece 217 are fixedly connected end to end in sequence. The fixing plate 212 is fixedly connected to the inner wall of the mounting groove 205. The piston 215 is connected to the inner wall of the mounting groove 205 in a piston-like manner. A through hole 213 is opened through the fixing plate 212. The second elastic piece 217 is away from the middle of the mounting groove 205 and is connected to the adjacent support The end faces of the support blocks 203 are fixedly connected, and all the support blocks 203 are connected end to end by using the second elastic sheet 217 to enclose and form the support profile of the dynamic ring assembly 201. The dynamic ring assembly 201 is installed around the outer ring of the support fixed ring 104 by using all the ring matching grooves 204; the bending radius of the support fixed ring 104 is equal to the bending radius of the ring matching groove 204. Under the support of the second elastic sheet 217, the dynamic ring assembly 201 can maintain the ring shape alone without the help of external force;

[0040] By adopting the above technical solution, the drafting mechanism 100 is installed as a whole on the yarn drafting path between the external slow roller 401 and the external fast roller 402, and the inner ring wall of the supporting fixed ring ring 104 is fixedly connected to the supporting frame of the spinning machine by using the external fixed installation structure. The yarn is in close contact with the yarn passing groove 206, and passes through a partial area of ​​the moving ring ring component 201. Under the traction force of the fast roller 402, the friction force between the yarn and the yarn passing groove 206 can pull the moving ring ring component 201 to rotate on the outer ring track of the supporting fixed ring ring 104, and the rotating axis is the axis of the supporting fixed ring ring 104. At this time, the yarn 403 is stretched on one side and needs to overcome the resistance to the rotation of the moving ring ring component 201. At this time, the yarn 403 is stretched on the one hand and needs to overcome the resistance to the rotation of the moving ring ring component 201 on the other hand. The yarn 403 area between the drafting mechanism 100 and the fast roller 402 has a high drafting efficiency compared to when the drafting mechanism 100 is not installed. Since the drafting speed of the fast roller 402 remains unchanged, the instantaneous traction force on the instantaneous drafting point close to one end of the slow roller 401 becomes smaller after the drafting mechanism 100 is installed. The drafting mechanism 100 is adopted in this scheme to distribute a part of the traction force on the instantaneous drafting point to the yarn 403 area between the drafting mechanism 100 and the fast roller 402, so that the yarn product is drafted evenly and the yarn breakage phenomenon is avoided. In the above-mentioned drafting process of the yarn 403, since the yarn 403 is kept in a taut state at all times, the yarn 403 is The contact area of ​​the ring component 201 is an effective contact area. In order to reduce the probability of sliding friction of the yarn 403 in the effective contact area, the factors causing sliding friction are: the yarn 403 is stretched in the effective contact area, while the length of the sliding friction area remains unchanged, and the process of increasing the length difference between the two will cause sliding friction; when the yarn 403 is in a taut state, the sliding friction will cause wear to the fiber and affect the product quality. With the above scheme, when the yarn 403 in the effective contact area is stretched and lengthened, the adjacent support blocks 203 can be deformed by the spring 214, and the area and duration of the sliding friction of the yarn 403 are reduced by increasing the spacing, thereby improving the product quality; spinning machine When the fast roller 402 stretches the yarn 403, the end of the yarn 403 close to the slow roller 401 will be an instantaneous stretching point due to the instantaneous change in the stretching speed. Because the instantaneous stretching point is stretched too quickly, the low-density area of ​​the yarn 403 is more likely to be stretched to become thinner than the high-density area, which makes it easy for the low-density area of ​​the yarn 403 to be quickly stretched by the instantaneous stretching, while the high-density area has a much lower stretching degree than the low-density area at the rated stretching efficiency, and there is a probability of yarn breakage. The difference in fiber length and hook length is also easily affected by the instantaneous stretching, resulting in uneven stretching of the yarn product.

[0041] The fixing plate 212 is provided with a trumpet-shaped plate 208 and a limiting ring plate 207 in sequence at one end away from the second spring plate 217. The edges of the trumpet-shaped plate 208 and the limiting ring plate 207 are fixedly connected to the inner wall of the mounting groove 205. The trumpet-shaped plate 208 and the limiting ring plate 207 are tightly attached to each other. A vent hole 211 in the same direction as the axis of the mounting groove 205 is provided in the center of the trumpet-shaped plate 208. A plurality of spring clip slits 210 are provided in a circular array from the edge of the vent hole 211 to the edge of the trumpet-shaped plate 208. The spring clip slits 210 are provided in a circular array. The same number of first spring pieces 209 as the spring piece gaps 210 are cut out on the trumpet-shaped piece 208. The thickness of the trumpet-shaped piece 208 is 0.5 mm. When air flows from the limiting ring piece 207 to the fixing piece 212, the spring piece gaps 210 can be increased by air pressure, so that the air can flow smoothly. When air flows from the fixing piece 212 to the limiting ring piece 207, the spring piece gaps 210 can be reduced by air pressure. The sides of adjacent first spring pieces 209 are pressed against each other, and the air can only flow through the vents 211.

[0042] By adopting the above technical solution, the extension of the spring 214 can be unlimited, that is, the distance between adjacent support blocks 203 is easy to increase when pulled by yarn friction, and when the piston 215 is reset due to the elastic recovery of the spring 214, the amount of air that can be discharged from the vent 211 per unit time is limited, so the function of slowing down the reset process of the distance between adjacent support blocks 203 is achieved, which can enhance the stability of the dynamic ring assembly 201 and eliminate the negative effect of vibration after the spring 214 rebounds.

[0043] The inner diameter of the ring matching groove 204 is 3 mm larger than the outer diameter of the supporting ring 104 .

[0044] A support plate 101 is fixedly connected to the inner ring wall of the supporting fixed ring ring 104, and an arcuate annular cover 102 is fixedly connected to the edges of the side walls on both sides of the support plate 101 respectively. The arcuate annular cover 102 is cross-sectioned using a plane intersecting the axis of the arcuate annular cover 102, and the cross-section shape is arc-shaped. The end of the arcuate annular cover 102 away from the support plate 101 is an annular limiting edge 103, and the annular limiting edge 103 is close to the side wall of the support block 203. With the above scheme, the annular limiting edges 103 located on both sides of the support block 203 play a limiting role, which can prevent the support block 203 from making movements other than orbital rotation around the axis of the supporting fixed ring ring 104, and can further improve the stability of the drafting mechanism.

[0045] The annular friction plate 305 is made of iron and has the advantage of being wear-resistant.

[0046] like Fig.11As shown, in another embodiment 2, on the basis of the technical solution of embodiment 1, a fixed pulley 404 is arranged on the stretching path of the yarn 403 between the slow roller 401 and the fast roller 402 to change the stretching direction of the fast roller 402, which can be beneficial to adapt to the structure of the existing spinning machine and reduce the modification cost, and at the same time can change the contact area between the yarn 403 and the moving ring assembly 201, and thus can also change the instantaneous stretching force at the instantaneous stretching point.

[0047] like Figure 7-Figure 9 As shown, in another embodiment 3, based on the technical solution of embodiment 1, the drafting mechanism also includes a resistance adjustment component, the resistance adjustment component includes a mounting hole 301, a first end cover 302, a mounting rod 303, a second end cover 304, and an annular friction plate 305. The support plate 101 is provided with a mounting hole 301 through the center, the mounting hole 301 is inserted and installed with the mounting rod 303, one end of the mounting rod 303 is fixedly connected to the first end cover 302, the end of the first end cover 302 close to the mounting rod 303 is in close contact with the side wall of the support plate 101, and the support plate 101 is provided with a side away from the first end cover 302. A second end cover 304 is provided, and a threaded hole 306 is provided at the center of one end of the second end cover 304 close to the support plate 101. An annular friction plate 305 is fixedly connected to one end of the second end cover 304 close to the support plate 101. A thread is provided on the side wall of the mounting rod 303 away from the first end cover 302. The mounting rod 303 uses the thread to cooperate with the threaded hole 306. When the mounting rod 303 reaches the deepest part of the threaded hole 306, the annular friction plate 305 is tightly attached to the support plate 101. The thread area on the mounting rod 303 is equal to the thread area in the threaded hole 306. The first end cover 302 is away from the mounting rod 30 One end of the second end cap 304 is fixedly connected to the spinning frame support frame by an external fixed mounting structure; the direction in which the second end cap 304 is screwed on the mounting rod 303 is the same as the direction in which the moving ring assembly 201 is pulled and rotated by the yarn 403; the above scheme can improve the problem that the moving ring assembly 201 is not smooth enough in coaxial rotation on the supporting fixed ring ring 104, and the resistance adjustment component is also used as an auxiliary component that can make the moving ring assembly 201 rotate. When the rotation of the moving ring assembly 201 on the supporting fixed ring ring 104 is stuck, the support plate 101 can be used to stop the rotation of the moving ring assembly 201 on the annular limiting edge 103 The movable ring assembly 201 can be rotated in a coordinated manner to make the movable ring assembly 201 rotate smoothly, thereby improving the smoothness of the operation of the drafting mechanism; when it is necessary to adjust the resistance to the rotation of the movable ring assembly 201, the second end cover 304 with annular friction plates 305 of different thicknesses can be replaced to change the friction between the annular friction plate 305 and the support plate 101. The greater the friction between the annular friction plate 305 and the support plate 101, the lower the smoothness of the rotation of the movable ring assembly 201, and the smaller the instantaneous drafting force on the instantaneous drafting point on the yarn 403, which can be adjusted according to production needs.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drafting control mechanism for a spinning frame with uniform drafting, characterized in that: The invention comprises a supporting fixed ring (104), and a moving ring assembly (201) sleeved on the outer ring of the supporting fixed ring (104); the moving ring assembly (201) comprises a plurality of splicing components (202) connected end to end in a ring array; the splicing component (202) comprises a supporting block (203), one end of the supporting block (203) is provided with a ring matching groove (204), the opening track of the ring matching groove (204) is arc-shaped, and the supporting fixed ring (104) can be installed into the ring matching groove (204). The support block (203) is provided with a yarn passing channel (206) at one end away from the ring matching groove (204), and a mounting groove (205) is provided through the middle of the support block (203); in the mounting groove (205), a fixing plate (212), a spring (214), a piston (215), and a second elastic plate (217) are sequentially installed from the middle of the mounting groove (205) to one end of the mounting groove (205), and the end of the second elastic plate (217) away from the middle of the mounting groove (205) is located outside the mounting groove (205), and the An end retaining ring (216) is fixedly connected to one end of the installation groove (205) near the second elastic piece (217); the fixing plate (212), the spring (214), the piston (215) and the second elastic piece (217) are fixedly connected end to end in sequence; the fixing plate (212) is fixedly connected to the inner wall of the installation groove (205); the piston (215) is connected to the inner wall of the installation groove (205) in a piston-like manner; a through hole (213) is formed through the fixing plate (212); and the second elastic piece (217) is connected to the corresponding inner wall of the installation groove (205) at one end away from the middle of the installation groove (205). The end faces of adjacent support blocks (203) are fixedly connected, and all support blocks (203) are connected end to end using second spring pieces (217) to enclose and form a support profile of the dynamic ring assembly (201). The dynamic ring assembly (201) uses all ring matching grooves (204) to be installed around the outer ring of the support fixed ring (104); the bending radius of the support fixed ring (104) is equal to the bending radius of the ring matching groove (204). Under the support of the second spring piece (217), the dynamic ring assembly (201) can maintain a ring shape alone without the help of external force.

2. The drafting control mechanism for a spinning frame with uniform drafting according to claim 1, characterized in that: A trumpet-shaped piece (208) and a limiting ring piece (207) are sequentially installed on one end of the fixing piece (212) away from the second elastic piece (217). The edges of the trumpet-shaped piece (208) and the limiting ring piece (207) are fixedly connected to the inner wall of the installation groove (205). The trumpet-shaped piece (208) and the limiting ring piece (207) are tightly attached to each other. A vent hole (211) in the same direction as the axis of the installation groove (205) is opened in the center of the trumpet-shaped piece (208). A plurality of spring piece slits (210) are opened in a circular array from the edge of the vent hole (211) to the edge of the trumpet-shaped piece (208). The slit (210) divides the trumpet-shaped sheet (208) into the same number of first spring sheets (209) as the spring sheet slit (210). The trumpet-shaped sheet (208) has a thickness of less than 1 mm. When air flows from the limiting ring sheet (207) to the fixing sheet (212), the spring sheet slit (210) can be increased by air pressure, so that air can flow smoothly. When air flows from the fixing sheet (212) to the limiting ring sheet (207), the spring sheet slit (210) can be reduced by air pressure. The sides of adjacent first spring sheets (209) are pressed against each other, so that air can only flow through the vent holes (211).

3. The drafting control mechanism for a spinning frame with uniform drafting according to claim 1, characterized in that: The inner diameter of the ring matching groove (204) is 1-5 mm larger than the outer diameter of the supporting ring (104).

4. The drafting control mechanism for a spinning frame with uniform drafting according to claim 1, characterized in that: A support plate (101) is fixedly connected to the inner ring wall of the support fixed ring (104), and an arcuate annular cover (102) is fixedly connected to the edges of the side walls on both sides of the support plate (101). The arcuate annular cover (102) is sectioned using a plane intersecting the axis of the arcuate annular cover (102), and the cross-sectional shape is an arc. The end of the arcuate annular cover (102) away from the support plate (101) is an annular limiting edge (103), and the annular limiting edge (103) is close to the side wall of the support block (203).

5. The drafting control mechanism for a spinning frame with uniform drafting according to claim 4, characterized in that: The drafting mechanism also includes a resistance adjustment component, which includes a mounting hole (301), a first end cover (302), a mounting rod (303), a second end cover (304), and an annular friction plate (305). The support plate (101) is provided with a mounting hole (301) running through the center thereof, a mounting rod (303) is inserted and installed in the mounting hole (301), one end of the mounting rod (303) is fixedly connected to the first end cover (302), an end of the first end cover (302) close to the mounting rod (303) is tightly attached to the side wall of the support plate (101), a second end cover (304) is provided on the side of the support plate (101) away from the first end cover (302), a threaded hole (306) is provided in the center of the second end cover (304) close to the end of the support plate (101), and the second end cover (304) is provided with a threaded hole (306) The end of the mounting rod (304) close to the support plate (101) is fixedly connected with an annular friction plate (305), and the side wall of the mounting rod (303) away from the first end cover (302) is provided with a thread, and the mounting rod (303) is threadedly matched with the threaded hole (306). When the mounting rod (303) reaches the deepest part of the threaded hole (306), the annular friction plate (305) is tightly attached to the support plate (101), and the threaded area on the mounting rod (303) is equal to the threaded area in the threaded hole (306). The end of the first end cover (302) away from the mounting rod (303) is fixedly connected to the spinning frame support frame by an external fixed mounting structure; the direction in which the second end cover (304) is threadedly tightened on the mounting rod (303) is the same as the direction in which the moving ring assembly (201) is rotated by the yarn (403).

6. A drafting regulating mechanism for a spinning frame with uniform drafting according to any one of claims 1 to 4, characterized in that: On the yarn (403) drafting path between the slow roller (401) and the fast roller (402), a fixed pulley (404) is arranged to change the drafting direction of the fast roller (402).

7. The drafting control mechanism for a spinning frame with uniform drafting according to claim 3, characterized in that: The inner diameter of the ring matching groove (204) is 3 mm larger than the outer diameter of the supporting ring (104).

8. The drafting control mechanism for a spinning frame with uniform drafting according to claim 5, characterized in that: The annular friction plate (305) is made of rubber.

9. The drafting regulating mechanism for a spinning frame with uniform drafting according to claim 5, characterized in that: The annular friction plate (305) is made of resin.

10. The drafting regulating mechanism for a spinning frame with uniform drafting according to claim 5, characterized in that: The annular friction plate (305) is made of metal.

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