Synchronous belt yarn sliding control device of spinning frame

Abstract

The invention relates to the technical field of spinning frames, and discloses a spinning frame synchronous belt yarn sliding control device. An upper clamping main body is mounted on a spinning frame bearing rod, a mounting through hole is formed in the bottom of one end of the upper clamping main body, and the upper clamping main body is rotationally connected with the spinning frame bearing rod through the mounting through hole; according to the scheme design, the clamping area of yarns can be increased in a dynamic deformation mode of the outer layer roller body, and the phenomenon of yarn slipping can be avoided; according to the scheme, the rubber supporting barrel is designed to be matched with air to support the drafting face, flexible clamping is matched with a large clamping face, the clamping effect in the yarn drafting process is good, and yarn slipping can be further avoided; according to the scheme, the internal pressure of the rubber supporting barrel at the bottom is controllable, the pressure can be automatically relieved when the pressure is too high, and the clamping effect can be stable; according to the scheme, the hard protruding strips and the soft protruding strips are designed on the synchronous belt, and the yarn structure can not be damaged on the basis that the yarn clamping effect is guaranteed through soft and hard combined anti-skid lines.

Description

Technical Field

[0001] The invention relates to the technical field of spinning frames, and in particular to a spinning frame synchronous belt yarn slippage control device. Background Art

[0002] A spinning frame is a device that can spin coarse yarn or slivers into fine yarn. The drafting mechanism in the spinning frame is the core mechanism of spinning. The drafting mechanism can use the different rotation speeds between the rollers to draft the clamped yarn, stretch the yarn into a slender state, and then form fine yarn through twisting.

[0003] The Chinese invention patent with the announcement number CN108977946B: A method for uniform drafting of large drafting in the rear area of ​​a spinning frame, discloses that a uniform drafting device is added in the rear drafting area of ​​the spinning frame, the uniform drafting device is composed of a pair of pressure holders, the pressure holder is composed of a groove wheel, a support shaft and a bearing, and left-handed and right-handed threads are respectively provided on the outer surfaces of the left and right sides of the groove wheel to ensure that the traversing roving smoothly enters the triangular groove in the middle of the groove wheel. When the roving strip is drafted in the rear area, it is squeezed by the S-shaped contact of the pair of pressure holders, and the triangular groove on the groove wheel penetrates the roving strip to prevent the transmission of the twist of the roving strip, increase the twist of the roving strip between the rear roller jaws and the uniform drafting device, and inhibit the fiber of the roving strip with large drafting in the rear area from changing speed in advance to cause uneven drafting. The twist and drafting force of the roving strip after passing through the uniform drafting device are reduced, which promotes the concentrated speed change of the fiber and improves the uniformity of drafting, thus realizing the technical solution of uniform drafting of large drafting in the rear area of ​​the spinning frame;

[0004] The Chinese utility model patent with the announcement number CN201245733Y: the drafting device of the spinning machine, discloses a roller seat, upper, middle and lower rollers installed on the roller seat and an apron led from the lower roller to the middle roller, a tension roller installed in the apron to fold the apron and make the back of the apron wrap around the middle roller, an apron roller is installed in the apron, and an apron pressure roller is installed outside the apron; the apron tensioning roller is pressed against the middle roller through the apron so that the apron is clamped and driven by the middle roller and the apron tensioning wheel; an apron plate with a length between the upper and lower rollers is provided in the apron, the apron plate has a plane lined on the working surface of the apron, the apron roller is installed on the front and rear ends of the apron plate, and the radius of the apron roller is less than 1 / 2 of the radius of the roller; there are multiple apron pressure rollers installed outside the working surface of the apron, and the apron pressure roller presses the apron against the apron plate; a technical solution capable of improving the uniformity of the spinning;

[0005] The Chinese utility model patent with announcement number CN206666706U: A spinning machine drafting device discloses a mounting frame, wherein drive motors are mounted on both sides of the mounting frame, rollers are connected to the drive motors, a connecting rod is arranged on the top of the mounting frame, a spring cradle is connected to the connecting rod, a rubber roller structure group consisting of a plurality of rubber roller structures is arranged on the spring cradle, extension plates are arranged at the bottoms of both sides of the mounting frame, an L-shaped rod is fixedly arranged on the extension plate, an articulated seat is arranged on the L-shaped rod, a first fastening structure is arranged in the articulated seat, a second fastening structure is symmetrically arranged on the connecting rod, the articulated seat and the fastening block are in the same straight line with the rubber rollers on the rubber roller structure, a cleaning belt is arranged between the first fastening structure and the second fastening structure, and the lower surface of the cleaning belt is in contact with the rubber rollers on the rubber roller structure group; a technical solution that can directly pass through the cleaning belt to clean the yarn on the rubber roller when the rubber roller is working.

[0006] The above patents have improved the existing technologies based on yarn drafting uniformity and yarn cleaning, respectively. However, in the drafting process of the existing technology, there is a problem of poor yarn drafting uniformity caused by yarn slippage. The yarn slippage phenomenon is that when the yarn is subjected to the drafting force of the rear roller, the clamping force of the middle roller is insufficient, resulting in a brief yarn sliding phenomenon. The sliding part of the yarn cannot be effectively drafted, and if the clamping force on the yarn is too large, the yarn will be flattened, affecting the drafting uniformity. Therefore, the field is in urgent need of a spinning frame synchronous belt yarn slippage control device to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a spinning frame synchronous belt yarn slippage control device to solve the problem of poor yarn drafting uniformity caused by yarn slippage in the prior art.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A spinning frame synchronous belt yarn slip control device comprises a spinning frame body, the spinning frame body comprises a plurality of spinning frame bearing rods for supporting the installation of parts, an upper clamping body is installed on the spinning frame bearing rod, a mounting through hole is opened at the bottom of one end of the upper clamping body, and the upper clamping body is rotatably connected with the spinning frame bearing rod by using the mounting through hole; the bottom of the upper clamping body is sequentially installed with a first upper drafting roller, a second upper drafting roller, and a third upper drafting roller from an end close to the mounting through hole to an end away from the mounting through hole;

[0010] A first lower drafting roller is sleeved and installed on a spinning frame carrying rod close to the first upper drafting roller, a third lower drafting roller is sleeved and installed on a spinning frame carrying rod close to the third upper drafting roller, and a second lower drafting mechanism is fixedly supported on a spinning frame carrying rod close to the second upper drafting roller; when the upper clamping body is in a downwardly pressed state, the first upper drafting roller and the first lower drafting roller tightly clamp the yarn, the second upper drafting roller and the second lower drafting mechanism tightly clamp the yarn, and the third upper drafting roller and the third lower drafting roller tightly clamp the yarn; the upper clamping body is provided with a through hole for installation After the shaft is rotated and pressed down to the bottom end, the upper clamping body is fixedly limited so that the upper clamping body cannot rotate. In order to achieve the purpose of limiting the upper clamping body, as a preferred limiting scheme 1, the upper clamping body's own counterweight can be used to achieve stable clamping of the yarn; as a preferred limiting scheme 2, the locking structure of the existing technology can be used to prevent the upper clamping body from rotating upward; as a preferred limiting scheme 3, an external locking device other than the spinning frame is used to prevent the upper clamping body from rotating upward; the limiting of the upper clamping body is not the main protection content of this scheme, and the existing limiting structure can be used, so it will not be described in detail;

[0011] As a preferred solution, the first upper drafting roller, the second upper drafting roller, and the third upper drafting roller constitute an upper drafting roller group, the first lower drafting roller, the second lower drafting mechanism, and the third lower drafting roller constitute a lower drafting roller group, and at least one of the upper drafting roller group and the lower drafting roller group is connected to an external rotating drive device; as a preferred solution, the first lower drafting roller, the second lower drafting mechanism, and the third lower drafting roller are respectively connected to an external rotating drive device, and from a right viewing angle, the first lower drafting roller, the synchronous belt, and the third lower drafting roller rotate counterclockwise. The first upper drafting roller, the outer roller body, and the third upper drafting roller are respectively subjected to the close contact with the first lower drafting roller, the synchronous belt, and the third lower drafting roller, and are driven to rotate in the clockwise direction. The linear speed of a point on the outer surface of the first lower drafting roller is less than the linear speed of a point on the outer surface of the synchronous belt, which is less than the linear speed of a point on the outer surface of the third lower drafting roller. In the process of yarn drafting on the spinning frame, the area where the yarn is located between the first upper drafting roller and the outer roller body and the area where the yarn is located between the outer roller body and the third upper drafting roller will be drafted respectively, thereby realizing the double-stage efficient drafting of the yarn by the spinning frame.

[0012] The second upper stretching roller includes a mounting connector fixedly mounted on the bottom of the upper clamping body, the two ends of the bottom of the mounting connector respectively having a mounting arm extending downward, a bearing rod is mounted on a common rotating shaft of the two mounting walls, an inner roller body is sleeved and fixed on the outer surface of the bearing rod, a middle roller body is arranged on the outer surface of the inner roller body, the middle roller body includes a plurality of rubber support cylinders densely arranged in a circular array, the outer side walls of all the rubber support cylinders are fixedly connected to the inner roller body, and the outer side walls of all the rubber support cylinders away from the inner roller body are commonly fixedly connected to an outer roller body.

[0013] By adopting the above technical solution, the design of the rubber support cylinder enables the outer surface of the outer roller to deform toward the load-bearing rod over a large area when the outer surface is under pressure, thereby increasing the contact area with the yarn and increasing the friction, which can effectively reduce the yarn slippage phenomenon, thereby improving the uniformity of the yarn after drafting by the spinning frame and improving the yarn quality.

[0014] As a preferred solution, the thickness of the side wall of the rubber support cylinder is twice greater than the diameter of the internal hollow area, which can increase the contact area between the outer roller and the yarn while reasonably improving the supporting force of the outer roller, avoiding the phenomenon that the yarn is subjected to a large friction surface but small pressure, and stabilizing the static friction effect, which can further avoid the occurrence of yarn slippage.

[0015] As a preferred solution, a first bearing sheet is fixedly mounted on one end of the outer roller body, and a second bearing sheet is fixedly mounted on one end of the outer roller body away from the first bearing sheet, and the first bearing sheet and the second bearing sheet can improve the overall structural stability of the outer roller body, the middle roller body, and the inner roller body;

[0016] As a preferred solution, the outer roller body, the first carrier sheet and the second carrier sheet are fixed by adhesion. The length of the outer roller body is ≥ the width of the synchronous belt + 8 cm. The two ends of the outer roller body can protrude from the two ends in the width direction of the synchronous belt, so that the deformation of the bottom of the outer roller body will not affect the stability of the adhesion, avoiding breakage, and thus effectively shortening the maintenance cycle of parts and enhancing the practicality of this solution.

[0017] As a preferred embodiment, a plurality of first air holes are installed in a circular array on the first bearing sheet, and the number of the first air holes is equal to the number of the rubber support cylinders; a plurality of second air holes are opened in a circular array on the second bearing sheet, and the number of the second air holes is equal to the number of the rubber support cylinders; the first air holes, the rubber support cylinders and the second air holes correspond to each other and are sealed and connected to each other; a bearing cylinder is rotatably installed on the outer wall of the second bearing sheet by means of a bearing, and the end of the bearing cylinder away from the outer roller body protrudes from the side of the bearing, and an air stabilizing block is fixedly installed on the bottom of the inner wall of the end of the bearing cylinder away from the outer roller body, and the air stabilizing block is tightly attached to the second bearing sheet in a sliding friction manner, and the air stabilizing block blocks the two second air holes on both sides of the second air hole at the bottom, and two air supply holes are opened on the air stabilizing block, and the two air supply holes can be respectively connected to the two second air holes on both sides of the second air hole at the bottom, and the two air supply holes are away from one end of the second vent hole, and are commonly connected to two through pipes, and the two through pipes are connected to an external air supply device at one end away from the air supply hole.

[0018] As a preferred embodiment, a pressure relief valve component is installed inside the first vent hole, and the pressure relief valve component includes a fixed plug fixedly installed inside the first vent hole, a tension spring is fixedly connected to one end of the fixed plug close to the rubber support cylinder, a sliding plug is fixedly connected to one end of the tension spring away from the fixed plug, and a sealing plug is fixedly connected to one end of the sliding plug away from the tension spring, the sealing plug is in the shape of a truncated cone, the bottom surface of the sealing plug is fixedly connected to the sliding plug, the sealing plug is inserted into the rubber support cylinder, a plurality of exhaust holes are formed through the edge of the side wall of the fixed plug in an annular array, and a plurality of exhaust holes are formed through the edge of the side wall of the sliding plug in an annular array.

[0019] As a preferred solution, the second lower drafting mechanism includes a synchronous belt mounting component fixedly connected to the spinning frame support frame, and a synchronous belt is rotatably mounted on the synchronous belt mounting component. Synchronous belt transmission is a common existing technology and will not be elaborated on here; the outer surface of the synchronous belt is fixed with anti-slip stripes, which can effectively avoid the occurrence of yarn slippage.

[0020] As a preferred solution, the anti-slip stripes include soft raised strips arranged in a linear array. The soft raised strips are made of rubber material and can protect the yarn from wear during the clamping process.

[0021] As a preferred solution, the soft raised strip is fixedly filled with a hard raised strip inside. As a preferred solution, the hard raised strip is made of metal; as a preferred solution, the hard raised strip is made of polyethylene. The presence of the hard raised strip can make the area where the yarn is clamped by the soft raised strip present a tiny wave shape, which can increase the clamping area, increase the force area of ​​the static friction of the yarn, and clamp more firmly, further avoiding the yarn slippage phenomenon. As a preferred solution, the cross-section of the hard raised strip is a flat equilateral trapezoid. The shape of the soft raised strip is adaptively adjusted according to the hard raised strip. The use of an equilateral trapezoid can avoid the shear force of sharp edges on the yarn during the clamping process, ensure that the yarn quality is not damaged, and can make a stable connection between the bottom surface of the hard raised strip and the synchronous belt.

[0022] As a preferred solution, the upper clamping body is connected and fixed to the first upper drafting roller by a metal elastic sheet, so that when the first upper drafting roller is pressed down, it can be subjected to the reaction force of the first lower drafting roller, causing the metal spring sheet to deform, so that the clamping function of the yarn between the first upper drafting roller and the first lower drafting roller is stable; the upper clamping body is connected and fixed to the third upper drafting roller by a metal elastic sheet, so that when the first upper drafting roller is pressed down, it can be subjected to the reaction force of the third lower drafting roller, causing the metal spring sheet to deform, so that the clamping function of the yarn between the third upper drafting roller and the third lower drafting roller is stable.

[0023] Beneficial effects:

[0024] 1. The design of this scheme can increase the clamping area of ​​the yarn by dynamically deforming the outer roller body, and can avoid the occurrence of yarn slippage;

[0025] 2. This scheme designs a rubber support cylinder to support the drafting surface with air, and uses flexible clamping with a large clamping surface to achieve a good clamping effect during the yarn drafting process, which can further prevent yarn slippage;

[0026] 3. In this solution, the internal pressure of the rubber support cylinder at the bottom is controllable, and it can automatically release pressure when the pressure is too high, which can make the clamping effect stable;

[0027] 4. This solution designs hard and soft raised strips on the synchronous belt, with a combination of soft and hard anti-slip textures. On the basis of ensuring the clamping effect of the yarn, it can not destroy the yarn structure and make the drafting effect uniform;

[0028] 5. This solution has a compact and reasonable structure, and its overall volume and structure have not changed much compared with the prior art. It can be directly modified for most types of existing spinning machines, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 A schematic diagram of the overall structure provided by Embodiment 1 of the present invention;

[0031] Figure 2 A schematic diagram of the detailed structure of the second upper drafting roller and the second lower drafting mechanism provided in Example 1 of the present invention;

[0032] Figure 3 A structural schematic diagram of a second upper drafting roller and a second lower drafting mechanism provided in Example 1 of the present invention in a separated state;

[0033] Figure 4 A disassembled diagram of the second upper drafting roller provided in Example 1 of the present invention;

[0034] Figure 5 A front view of a second upper drafting roller provided in Example 1 of the present invention;

[0035] Figure 6 A right side view of the second upper drafting roller and the second lower drafting mechanism provided in Example 1 of the present invention;

[0036] Figure 7 A right side cross-sectional view of the middle area of ​​the outer roller body provided in Example 1 of the present invention;

[0037] Figure 8 A right-side cross-sectional view of the middle area of ​​the outer roller body provided in Example 1 of the present invention when the outer roller body is clamping the yarn;

[0038] Fig. 9 A schematic diagram of the structure of a pressure relief valve component provided in Example 1 of the present invention;

[0039] Fig.10 This is a right side cross-sectional view of a partial area of ​​the synchronous belt provided in Example 1 of the present invention.

[0040] Description of reference numerals:

[0041] 100, spinning frame bearing rod; 101, upper clamping body; 102, mounting through hole; 103, first upper drafting roller; 104, third upper drafting roller; 105, second upper drafting roller; 106, first lower drafting roller; 107, third lower drafting roller; 108, second lower drafting mechanism; 109, yarn; 201, mounting connector; 202, outer roller body; 203, middle roller body; 204, inner roller body; 205, bearing rod; 206, first bearing sheet; 20 7. Second bearing plate; 208. Rubber supporting cylinder; 301. Bearing cylinder; 302. Bearing; 303. First vent hole; 304. Second vent hole; 305. Air stabilizing block; 306. Air supply hole; 307. Two-way pipe; 400. Pressure relief valve component; 401. Fixed plug; 402. Tension spring; 403. Sliding plug; 404. Sealing plug; 405. Exhaust hole; 501. Synchronous belt installation component; 502. Synchronous belt; 503. Hard raised strip; 504. Soft raised strip. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figure 1-10 As shown, the spinning frame synchronous belt yarn slippage control device provided by Example 1 of the present invention comprises a spinning frame body, the spinning frame body comprises a plurality of spinning frame bearing rods 100 for supporting the installation of parts, an upper clamping body 101 is installed on the spinning frame bearing rod 100, a mounting through hole 102 is opened at the bottom of one end of the upper clamping body 101, and the upper clamping body 101 is rotatably connected to the spinning frame bearing rod 100 by using the mounting through hole 102; the upper clamping body 101 is sequentially installed with a first upper drafting roller 103, a second upper drafting roller 105, and a third upper drafting roller 104 at the bottom of the upper clamping body 101 from the end close to the mounting through hole 102 to the end away from the mounting through hole 102;

[0044] The first lower drafting roller 106 is sleeved and installed on the spinning frame carrying rod 100 close to the first upper drafting roller 103, the third lower drafting roller 107 is sleeved and installed on the spinning frame carrying rod 100 close to the third upper drafting roller 104, and the second lower drafting mechanism 108 is fixedly supported on the spinning frame carrying rod 100 close to the second upper drafting roller 105; when the upper clamping body 101 is in the downwardly pressed state, the first upper drafting roller 10 3 and the first lower drafting roller 106 are in close contact with the yarn 109, the second upper drafting roller 105 and the second lower drafting mechanism 108 are in close contact with the yarn 109, and the third upper drafting roller 104 and the third lower drafting roller 107 are in close contact with the yarn 109; after the upper clamping body 101 is rotated and pressed down to the bottom end with the mounting through hole 102 as the axis, the upper clamping body 101 is fixed and limited by the outer limit positioning tool, so that the upper clamping body 101 cannot rotate upward;

[0045] The first upper drafting roller 103, the second upper drafting roller 105, and the third upper drafting roller 104 are an upper drafting roller group, the first lower drafting roller 106, the second lower drafting mechanism 108, and the third lower drafting roller 107 are a lower drafting roller group, and at least one of the upper drafting roller group and the lower drafting roller group is transmission-connected to an external rotary drive device;

[0046] The first lower drafting roller 106, the second lower drafting mechanism 108, and the third lower drafting roller 107 are respectively connected to external rotation drive devices. In the right viewing angle, the first lower drafting roller 106, the synchronous belt 502, and the third lower drafting roller 107 rotate counterclockwise, and the first upper drafting roller 103, the outer layer roller body 202, and the third upper drafting roller 104 are respectively subjected to the close contact with the first lower drafting roller 106, the synchronous belt 502, and the third lower drafting roller 107, and the driven force is in a clockwise direction. The yarn 109 rotates in the needle direction, and the linear speed of a point on the outer surface of the first lower drafting roller 106 is less than the linear speed of a point on the outer surface of the synchronous belt 502, which is less than the linear speed of a point on the outer surface of the third lower drafting roller 107. In the process of the spinning frame drafting the yarn 109, the area where the yarn 109 is located between the first upper drafting roller 103 and the outer roller body 202, and the area where the yarn 109 is located between the outer roller body 202 and the third upper drafting roller 104 will be stretched respectively, thereby realizing the double-stage efficient drafting of the yarn 109 by the spinning frame.

[0047] The second upper stretching roller 105 includes a mounting connector 201 fixedly mounted on the bottom of the upper clamping body 101, and the two ends of the bottom of the mounting connector 201 are respectively provided with a mounting arm extending downward, and a load-bearing rod 205 is installed on the common rotating shaft of the two mounting walls, and an inner layer roller body 204 is sleeved and fixed on the outer surface of the load-bearing rod 205, and a middle layer roller body 203 is arranged on the outer surface of the inner layer roller body 204, and the middle layer roller body 203 includes a plurality of rubber support cylinders 208 densely arranged in a circular array, and the outer side walls of all the rubber support cylinders 208 are fixedly connected to the inner layer roller body 204, and the outer side walls of all the rubber support cylinders 208 away from the inner layer roller body 204 are commonly fixedly connected with an outer layer roller body 202.

[0048] By adopting the above technical solution, the design of the rubber support cylinder 208 enables a large area of ​​the outer roller body 202 to deform toward the load-bearing rod 205 when the outer surface is under pressure, thereby increasing the contact area with the yarn 109 and increasing the friction. This can effectively reduce the yarn slippage phenomenon, thereby improving the uniformity of the yarn 109 after stretching by the spinning frame and improving the quality of the yarn 109.

[0049] The thickness of the side wall of the rubber support cylinder 208 is twice greater than the diameter of the internal hollow area, which can increase the contact area between the outer roller 202 and the yarn 109 while reasonably improving the supporting force of the outer roller 202, avoiding the phenomenon that the yarn 109 is subjected to a large friction surface but a small pressure, and stabilizing the static friction effect, which can further avoid the occurrence of yarn slippage.

[0050] A first bearing sheet 206 is fixedly mounted on one end of the outer roller body 202, and a second bearing sheet 207 is fixedly mounted on one end of the outer roller body 202 away from the first bearing sheet 206. The first bearing sheet 206 and the second bearing sheet 207 can improve the overall structural stability of the outer roller body 202, the middle roller body 203, and the inner roller body 204;

[0051] The outer roller body 202, the first carrier sheet 206 and the second carrier sheet 207 are fixed by adhesion. The length of the outer roller body 202 = the width of the synchronous belt 502 + 8 cm. The two ends of the outer roller body 202 can protrude from the two ends in the width direction of the synchronous belt 502, so that the deformation of the bottom of the outer roller body 202 will not affect the stability of the adhesion, avoiding breakage, and thus effectively shortening the maintenance cycle of parts and enhancing the practicality of this solution.

[0052] A plurality of first vent holes 303 are installed in a circular array on the first bearing sheet 206, and the number of the first vent holes 303 is equal to the number of the rubber support cylinders 208; a plurality of second vent holes 304 are opened in a circular array on the second bearing sheet 207, and the number of the second vent holes 304 is equal to the number of the rubber support cylinders 208; the first vent holes 303, the rubber support cylinders 208, and the second vent holes 304 are sealed and connected to each other in a one-to-one correspondence; a bearing cylinder 301 is rotatably installed on the outer wall of the second bearing sheet 207 by means of a bearing 302, and one end of the bearing cylinder 301 away from the outer roller body 202 protrudes from the side of the bearing 302, and the bearing An air stabilizing block 305 is fixedly installed on the bottom of the inner wall of the cylinder 301 away from the outer roller body 202. The air stabilizing block 305 is tightly attached to the second supporting plate 207 in a sliding friction manner. The air stabilizing block 305 blocks the two second air holes 304 on both sides of the second air hole 304 at the bottom. Two air supply holes 306 are penetrated through the air stabilizing block 305. The two air supply holes 306 can be connected to the two second air holes 304 on both sides of the second air hole 304 at the bottom respectively. The two air supply holes 306 are away from one end of the second air hole 304, and are commonly connected to two through pipes 307. The two through pipes 307 are connected to an external air supply device at one end away from the air supply holes 306.

[0053] A pressure relief valve component 400 is installed inside the first air vent 303, and the pressure relief valve component 400 includes a fixed plug 401 fixedly installed inside the first air vent 303, a tension spring 402 is fixedly connected to one end of the fixed plug 401 close to the rubber support cylinder 208, a sliding plug 403 is fixedly connected to one end of the tension spring 402 away from the fixed plug 401, and a sealing plug 404 is fixedly connected to one end of the sliding plug 403 away from the tension spring 402. The sealing plug 404 is in the shape of a truncated cone, and the lower bottom surface of the sealing plug 404 is fixedly connected to the sliding plug 403, and the sealing plug 404 is inserted into the rubber support cylinder 208. A plurality of exhaust holes 405 are opened through the edge of the side wall of the fixed plug 401 in a circular array, and a plurality of exhaust holes 405 are opened through the edge of the side wall of the sliding plug 403 in a circular array.

[0054] The second lower drafting mechanism 108 includes a synchronous belt mounting component 501 fixedly connected to the spinning frame support frame, and a synchronous belt 502 is rotatably mounted on the synchronous belt mounting component 501. Synchronous belt transmission is a common existing technology and will not be elaborated on here. Anti-slip stripes are fixed on the outer surface of the synchronous belt 502, which can effectively avoid the occurrence of yarn slippage.

[0055] The anti-slip stripes include soft raised strips 504 arranged in a linear array. The soft raised strips 504 are made of rubber material and can protect the yarn 109 from wear during the clamping process.

[0056] The inside of the soft raised strip 504 is fixedly filled with a hard raised strip 503, and the hard raised strip 503 is made of metal; the existence of the hard raised strip 503 can make the area of ​​the yarn 109 clamped by the soft raised strip 504 present a tiny wave shape, which can increase the clamping area, increase the force area of ​​the static friction of the yarn 109, and clamp more firmly, further avoiding the yarn slippage phenomenon; the cross-section of the hard raised strip 503 is a flat equilateral trapezoid, and the shape of the soft raised strip 504 is adaptively adjusted according to the hard raised strip 503. The equilateral trapezoid is adopted, which can avoid the shear force of sharp edges on the yarn 109 during the clamping process, ensure that the quality of the yarn 109 is not damaged, and can make a firm connection between the bottom surface of the hard raised strip 503 and the synchronous belt 502.

[0057] The upper clamping body 101 and the first upper drafting roller 103 are connected and fixed by a metal elastic sheet, so that when the first upper drafting roller 103 is pressed downward, it can be subjected to the reaction force of the first lower drafting roller 106, causing the metal spring sheet to deform, so that the clamping function of the yarn 109 between the first upper drafting roller 103 and the first lower drafting roller 106 is stable; the upper clamping body 101 and the third upper drafting roller 104 are connected and fixed by a metal elastic sheet, so that when the first upper drafting roller 103 is pressed downward, it can be subjected to the reaction force of the third lower drafting roller 107, causing the metal spring sheet to deform, so that the clamping function of the yarn 109 between the third upper drafting roller 104 and the third lower drafting roller 107 is stable.

[0058] Working principle: the yarn 109 enters the yarn slip control device of the present invention, and the upper drafting roller group cooperates with the lower drafting roller group to clamp the yarn 109. Since the linear speed of a point on the outer surface of the first lower drafting roller 106 is less than the linear speed of a point on the outer surface of the synchronous belt 502 and less than the linear speed of a point on the outer surface of the third lower drafting roller 107, in the process of the spinning frame drafting the yarn 109, the area where the yarn 109 is located between the first upper drafting roller 103 and the outer roller body 202, and the area where the yarn 109 is located between the outer roller body 202 and the third upper drafting roller 104 will be drafted respectively, so as to realize the two-stage efficient drafting of the yarn 109 by the spinning frame; since the middle position of the outer roller body 202 is difficult to be supported by the first bearing plate 206 and the second bearing plate 207, the part in the middle of the outer roller body 202, which is in contact with the yarn 109, such as Figure 8As shown in the figure, a deformation tending to be flattened will occur, and the flat outer roller 202 at the bottom is clamped and cooperated with the synchronous belt 502, which can clamp the yarn 109 with a large area, and can effectively avoid yarn slippage. In this process, the external air supply device continuously and stably supplies air to the two-way pipe 307, and the gas is air. The air flow path is the two-way pipe 307, the air supply hole 306, the second air hole 304, and the rubber support cylinder 208. The two rubber support cylinders 208 on both sides of the rubber support cylinder 208 at the bottom can be filled with air to obtain high-pressure air. The supporting force of the air ensures that the yarn 109 can obtain sufficient supporting force without exerting excessive pressure on the synchronous belt 502, which is beneficial to the long-term normal operation of the synchronous belt 502; in the above process, if the air pressure inside the rubber support cylinder 208 is too high, it can push the sealing plug 404 in the direction of the fixed plug 401, and the tension spring 402 is compressed to create a gap between the sliding plug 403 and the rubber support cylinder 208. The air in the rubber support cylinder 208 can be discharged to the outside from the exhaust hole 405 to maintain the stability of the mechanism operation.

[0059] 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 spinning frame synchronous belt yarn slippage control device, comprising a spinning frame body, wherein the spinning frame body comprises a plurality of spinning frame bearing rods (100) for supporting the installation of components, characterized in that: An upper clamping body (101) is installed on the spinning frame carrying rod (100); a mounting through hole (102) is provided at the bottom of one end of the upper clamping body (101); the upper clamping body (101) is rotatably connected to the spinning frame carrying rod (100) by means of the mounting through hole (102); a first upper drafting roller (103), a second upper drafting roller (105), and a third upper drafting roller (104) are sequentially installed on the bottom of the upper clamping body (101) from an end close to the mounting through hole (102) to an end away from the mounting through hole (102); A first lower drafting roller (106) is sleeved and installed on a spinning frame carrying rod (100) close to the first upper drafting roller (103), a third lower drafting roller (107) is sleeved and installed on a spinning frame carrying rod (100) close to the third upper drafting roller (104), and a second lower drafting roller (107) is fixedly supported on a spinning frame carrying rod (100) close to the second upper drafting roller (105). A drafting mechanism (108); when the upper clamping body (101) is in a downwardly pressed state, the first upper drafting roller (103) and the first lower drafting roller (106) tightly clamp the yarn (109), the second upper drafting roller (105) and the second lower drafting mechanism (108) tightly clamp the yarn (109), and the third upper drafting roller (104) and the third lower drafting roller (107) tightly clamp the yarn (109); The first upper drafting roller (103), the second upper drafting roller (105), and the third upper drafting roller (104) form an upper drafting roller group, and the first lower drafting roller (106), the second lower drafting mechanism (108), and the third lower drafting roller (107) form a lower drafting roller group. The upper drafting roller group and the lower drafting roller group, at least one of the two drafting roller groups is connected to an external rotating drive device.

2. A spinning frame synchronous belt yarn slippage control device according to claim 1, characterized in that: The second upper drafting roller (105) comprises a mounting connector (201) fixedly mounted on the bottom of the upper clamping body (101), the bottom ends of the mounting connector (201) respectively having a mounting arm extending downward, two mounting walls having a bearing rod (205) mounted on a common rotating shaft, an inner roller body (204) being sleeved and fixedly mounted on the outer surface of the bearing rod (205), a middle roller body (203) being arranged on the outer surface of the inner roller body (204), the middle roller body (203) comprising a plurality of rubber support cylinders (208) densely arranged in a circular array, the outer side walls of all the rubber support cylinders (208) being fixedly connected to the inner roller body (204), and the outer side walls of all the rubber support cylinders (208) being fixedly connected to an outer roller body (202) on a side away from the inner roller body (204).

3. A spinning frame synchronous belt yarn slippage control device according to claim 2, characterized in that: The thickness of the side wall of the rubber support cylinder (208) is twice greater than the diameter of the inner hollow area.

4. A spinning frame synchronous belt yarn slippage control device according to claim 2, characterized in that: As a preferred embodiment, a first carrier sheet (206) is fixedly mounted on one end of the outer roller body (202), and a second carrier sheet (207) is fixedly mounted on one end of the outer roller body (202) away from the first carrier sheet (206); the length of the outer roller body (202) is ≥ the width of the synchronous belt (502) + 8 cm, and both ends of the outer roller body (202) can protrude from both ends of the synchronous belt (502) in the width direction.

5. A spinning frame synchronous belt yarn slippage control device according to claim 4, characterized in that: The first bearing sheet (206) is provided with a plurality of first vent holes (303) in an annular array, the number of the first vent holes (303) being equal to the number of the rubber support cylinders (208); the second bearing sheet (207) is provided with a plurality of second vent holes (304) in an annular array, the number of the second vent holes (304) being equal to the number of the rubber support cylinders (208); the first vent holes (303), the rubber support cylinders (208) and the second vent holes (304) are sealed and connected to each other in a one-to-one correspondence; a bearing cylinder (301) is rotatably installed on the outer wall of the second bearing sheet (207) by means of a bearing (302); the end of the bearing cylinder (301) away from the outer roller body (202) protrudes from the side of the bearing (302); the bearing An air stabilizing block (305) is fixedly installed on the bottom of the inner wall of the carrier tube (301) at one end away from the outer roller body (202). The air stabilizing block (305) is tightly attached to the second carrier plate (207) in a sliding friction manner. The air stabilizing block (305) blocks the two second air holes (304) on both sides of the second air hole (304) at the bottom. Two air supply holes (306) are penetrated through the air stabilizing block (305). The two air supply holes (306) can be respectively connected to the two second air holes (304) on both sides of the second air hole (304) at the bottom. The two air supply holes (306) are far away from one end of the second air hole (304) and are commonly connected to two through pipes (307). The two through pipes (307) are connected to an external air supply device at one end away from the air supply hole (306).

6. A spinning frame synchronous belt yarn slippage control device according to claim 5, characterized in that: A pressure relief valve component (400) is installed inside the first vent hole (303), and the pressure relief valve component (400) includes a fixed plug (401) fixedly installed inside the first vent hole (303), an end of the fixed plug (401) close to the rubber support cylinder (208) is fixedly connected to a tension spring (402), an end of the tension spring (402) away from the fixed plug (401) is fixedly connected to a sliding plug (403), and the sliding plug (403) is away from the tension spring (4 02) One end of the fixed plug (401) is fixedly connected with a sealing plug (404), the sealing plug (404) is in the shape of a truncated cone, the bottom surface of the sealing plug (404) is fixedly connected with the sliding plug (403), the sealing plug (404) is inserted into the rubber support cylinder (208), the side wall edge of the fixed plug (401) is provided with a plurality of exhaust holes (405) in a circular array, and the side wall edge of the sliding plug (403) is provided with a plurality of exhaust holes (405) in a circular array.

7. A spinning frame synchronous belt yarn slippage control device according to claim 1, characterized in that: The second lower drafting mechanism (108) comprises a synchronous belt mounting component (501) fixedly connected to the spinning frame support frame, and a synchronous belt (502) is rotatably mounted on the synchronous belt mounting component (501); and anti-slip stripes are fixed on the outer surface of the synchronous belt (502).

8. A spinning frame synchronous belt yarn slippage control device according to claim 7, characterized in that: The anti-slip stripes include soft raised strips (504) arranged in a linear array.

9. A spinning frame synchronous belt yarn slippage control device according to claim 8, characterized in that: The soft raised strip (504) is fixedly filled with a hard raised strip (503). The spinning frame synchronous belt yarn slippage control device according to claim 1 is characterized in that: The upper clamping body (101) and the first upper drafting roller (103) are connected and fixed by a metal elastic sheet; the upper clamping body (101) and the third upper drafting roller (104) are connected and fixed by a metal elastic sheet.

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