A synchronous belt let-off control device for a spinning frame

Abstract

The application relates to the technical field of spinning frames, and discloses a spinning frame synchronous belt yarn-slipping control device, which is characterized in that a top clamping main body is installed on a spinning frame bearing rod, a mounting through hole is arranged at the bottom of one end of the top clamping main body, and the top clamping main body is rotationally connected with the spinning frame bearing rod through the mounting through hole. According to the scheme, the dynamic deformation of an outer roller body is used to increase the clamping area of yarn and avoid the generation of yarn-slipping phenomenon. According to the scheme, a rubber supporting cylinder is used to support the drafting surface in cooperation with air, a flexible clamping is used to cooperate with a large clamping surface, the clamping effect on yarn in the drafting process is good, and yarn-slipping can be further avoided. In the scheme, the internal pressure of the rubber supporting cylinder at the bottom is controllable, the pressure can be automatically released when the pressure is too high, and the clamping effect is stable. In the scheme, hard protruding strips and soft protruding strips are designed on the synchronous belt, the antislip pattern is combined with softness and hardness, the clamping effect on yarn can be guaranteed, and the structure of the yarn cannot be damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spinning frame, in particular to a spinning frame synchronous belt yarn sliding control device. BACKGROUND

[0002] The spinning frame is a device capable of spinning roving or sliver into yarn, and the drafting mechanism in the spinning frame is the core mechanism of spinning. The drafting mechanism can draft the clamped yarn by using different rotating speeds between the rollers, stretch the yarn into an elongated state, and then form the yarn by twisting.

[0003] The Chinese invention patent with the publication number CN108977946B: a uniform drafting method for large drafting in the rear area of a spinning frame, discloses that a drafting uniform device is added in the rear drafting area of the spinning frame. The drafting uniform device is composed of a pair of pressure holders. The pressure holder is composed of a groove wheel, a support shaft and a bearing. Left and right outer surfaces of the groove wheel are respectively provided with left-handed and right-handed threads to ensure that the traversing roving smoothly enters the triangular groove in the middle of the groove wheel. The S-shaped contact and extrusion of the pair of pressure holders is used when the roving sliver is drafted in the rear area. The triangular groove on the groove wheel penetrates into the roving sliver, prevents the twist of the roving sliver from being transmitted, increases the twist of the roving sliver between the rear roller nip and the drafting uniform device, suppresses the fiber speed change of the roving sliver in the rear area of the large drafting, reduces the twist of the roving sliver and the drafting force after the drafting uniform device, promotes the fiber speed change, improves the drafting uniformity, and realizes the technical scheme of uniform drafting of large drafting in the rear area of the spinning frame.

[0004] The Chinese utility model patent with the publication number CN201245733Y: a drafting device of a spinning frame, discloses that a tensioning roller is installed in the apron to fold and turn the apron and make the back of the apron wrap around the middle roller. The apron has an apron roller inside and an apron pressure roller outside. The apron tensioning roller is pressed by the apron and the middle roller to make the apron clamped and driven by the middle roller and the apron tensioning wheel. The apron has an apron plate with a length between the upper and lower rollers. The apron plate has a flat surface that is lined on the working surface of the apron. The apron roller is installed on the front and rear ends of the apron plate. The radius of the apron roller is less than 1 / 2 of the radius of the roller. The apron pressure roller is installed outside the working surface of the apron. The apron pressure roller presses the apron towards the apron plate. The technical scheme can improve the uniformity of the yarn.

[0005] The Chinese utility model patent with the publication number CN206666706U discloses a drawing device of a spinning frame, which comprises a mounting frame, drive motors are mounted on the two sides of the mounting frame, rollers are connected to the drive motors, a connecting rod is further arranged on the top of the mounting frame, a spring cradle is connected to the connecting rod, a plurality of rubber roller structures are arranged on the spring cradle to form a rubber roller structure group, extension plates are further arranged on the bottoms of the two sides of the mounting frame, L-shaped rods are fixedly arranged on the extension plates, hinge seats are arranged on the L-shaped rods, first fastening structures are arranged in the hinge seats, second fastening structures are symmetrically arranged on the connecting rod, the hinge seats and the fastening blocks 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.

[0006] The above-mentioned patents have improved the existing technology based on the uniformity of yarn drawing and the angle of yarn cleaning, but the existing technology has the problem of poor yarn drawing uniformity caused by the phenomenon of yarn slipping in the drawing process. The phenomenon of yarn slipping is that the yarn slips temporarily under the action of the drawing force of the back roller due to insufficient clamping force of the middle roller, and the part of the yarn that slips cannot be effectively drawn, and too much clamping force on the yarn will flatten the yarn, affecting the uniformity of drawing. Therefore, there is an urgent need for a spinning frame synchronous belt yarn slipping control device to solve the above-mentioned problems. SUMMARY

[0007] The purpose of the present application is to provide a spinning frame synchronous belt yarn slipping control device to solve the problem of poor yarn drawing uniformity caused by the phenomenon of yarn slipping in the existing technology.

[0008] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0009] The spinning frame synchronous belt yarn slipping 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, an installation hole is formed in one end of the bottom of the upper clamping body, and the upper clamping body is rotationally connected to the spinning frame bearing rod through the installation hole; a first upper part drawing roller, a second upper part drawing roller and a third upper part drawing roller are sequentially installed on the bottom of the upper clamping body from the end close to the installation hole to the end away from the installation hole;

[0010] The first lower draft roller is installed on the spinning frame carrying rod in a sleeved manner close to the first upper draft roller position, the third lower draft roller is installed on the spinning frame carrying rod in a sleeved manner close to the third upper draft roller position, and the second lower draft mechanism is fixedly supported on the spinning frame carrying rod close to the second upper draft roller position; in the depressed state of the upper clamping body, the first upper draft roller and the first lower draft roller tightly clamp the yarn, the second upper draft roller and the second lower draft mechanism tightly clamp the yarn, and the third upper draft roller and the third lower draft roller tightly clamp the yarn; after the upper clamping body is rotated and depressed to the bottom end with the mounting through hole as the shaft, the upper clamping body is fixed and limited, so that the upper clamping body cannot rotate; in order to realize the limiting purpose of the upper clamping body, as a preferred limiting scheme one, the upper clamping body itself counterweight can be used to stably clamp the yarn; as a preferred limiting scheme two, the existing locking structure can be used to prevent the upper clamping body from rotating upward; as a preferred limiting scheme three, an external locking device other than the spinning frame can be used to prevent the upper clamping body from rotating upward; the limiting of the upper clamping body is not the main protection content of the present scheme, and the existing limiting structure can be used, so that no more description is made here.

[0011] As a preferred scheme, the first upper draft roller, the second upper draft roller and the third upper draft roller form an upper draft roller group, the first lower draft roller, the second lower draft mechanism and the third lower draft roller form a lower draft roller group, the upper draft roller group and the lower draft roller group are at least one group of transmission connection with external rotary driving equipment; as a preferred scheme, the first lower draft roller, the second lower draft mechanism and the third lower draft roller are respectively transmission connection with external rotary driving equipment, in the right visual angle, the first lower draft roller, the synchronous belt and the third lower draft roller rotate counterclockwise, the first upper draft roller, the outer roller body and the third upper draft roller respectively rotate clockwise under the close action of the first lower draft roller, the synchronous belt and the third lower draft roller, the linear velocity of a point on the outer surface of the first lower draft roller < the linear velocity of a point on the outer surface of the synchronous belt < the linear velocity of a point on the outer surface of the third lower draft roller, in the process of drafting the yarn by the spinning frame, the area between the first upper draft roller and the outer roller body and the area between the outer roller body and the third upper draft roller are respectively subjected to drafting, so as to realize the double-section efficient drafting of the yarn by the spinning frame.

[0012] The second upper draft roller comprises a mounting link fixedly installed at the bottom of the upper clamping body, the mounting link is provided with a downwardly extending mounting arm at each end of the bottom, a bearing rod is rotatably installed on the two mounting walls, an inner roller body is fixedly sleeved on the outer surface of the bearing rod, a middle roller body is arranged on the outer surface of the inner roller body, and the middle roller body comprises a plurality of rubber supporting cylinder bodies arranged in an annular array, one side of the outer side wall of each rubber supporting cylinder body is fixedly connected with the inner roller body, and an outer roller body is fixedly connected with the outer side wall of each rubber supporting cylinder body away from the inner roller body.

[0013] By adopting the above technical scheme, the design of the rubber supporting cylinder body enables the outer surface of the outer roller body to be deformed in the direction of the bearing rod when the outer surface is pressed, thereby increasing the contact area with the yarn and the friction force, effectively reducing the yarn slipping phenomenon, and improving the uniformity of the yarn after drafting by the spinning frame and the quality of the yarn.

[0014] As a preferred scheme, the thickness of the side wall of the rubber supporting cylinder body is twice greater than the diameter of the hollow inner region, which can increase the contact area of the outer roller body with the yarn while reasonably improving the support force on the outer roller body, avoiding the phenomenon that the yarn is subjected to a large friction surface and a small pressure, stabilizing the effect of static friction, and further avoiding the occurrence of the yarn slipping phenomenon.

[0015] As a preferred scheme, a first bearing piece is fixedly installed at one end of the outer roller body, and a second bearing piece is fixedly installed at the end of the outer roller body away from the first bearing piece, which can improve the overall structural stability of the outer roller body, the middle roller body, and the inner roller body.

[0016] As a preferred scheme, the fixing mode between the outer roller body, the first bearing piece, and the second bearing piece is adhesion, the length of the outer roller body is greater than or equal to the width of the synchronous belt plus 8 cm, and the two ends of the outer roller body can protrude beyond the two ends in the width direction of the synchronous belt, so that the deformation of the bottom of the outer roller body does not affect the stability of adhesion, avoids the occurrence of the fracture phenomenon, thereby effectively shortening the maintenance period of the parts, and enhancing the practicality of the scheme.

[0017] As a preferred scheme, a plurality of first air holes are installed in a ring 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 provided in a ring 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 are in one-to-one correspondence and are sealed and communicated with each other; a bearing cylinder is rotatably installed on the outer sidewall of the second bearing sheet by a bearing, and the bearing cylinder protrudes from the side edge of the bearing away from the one end of the outer layer roller body; a gas stabilizing block is fixedly installed on the inner wall bottom of the bearing cylinder away from the one end of the outer layer roller body, and the gas stabilizing block is tightly attached to the second bearing sheet in a sliding friction manner; the gas stabilizing block blocks two second air holes on both sides of the second air hole at the bottom end; two air supply holes are provided in the gas stabilizing block, and the two air supply holes can respectively communicate with the two second air holes on both sides of the second air hole at the bottom end; two pipes are connected to the two air supply holes away from the second air holes.

[0018] As a preferred scheme, a pressure relief valve component is installed inside the first air hole, the pressure relief valve component includes a fixed plug fixedly installed inside the first air hole, a tension spring fixedly connected to the one end of the fixed plug close to the rubber support cylinder, a sliding plug fixedly connected to the one end of the tension spring away from the fixed plug, and a plugging plug fixedly connected to the one end of the sliding plug away from the tension spring; the plugging plug is in the shape of a circular truncated cone, and the lower bottom surface of the plugging plug is fixedly connected to the sliding plug; the plugging plug is inserted into the rubber support cylinder; a plurality of exhaust holes are provided in a ring array on the sidewall edge of the fixed plug; and a plurality of exhaust holes are provided in a ring array on the sidewall edge of the sliding plug.

[0019] As a preferred scheme, the second lower draft mechanism includes a synchronous belt installation component fixedly connected to the spinning frame support frame, and a synchronous belt is rotatably installed on the synchronous belt installation component; the synchronous belt transmission is a common technology, and will not be described in detail here.

[0020] As a preferred scheme, the anti-slip stripes include soft protruding strips arranged in a linear array, and the soft protruding strips are made of rubber material, which can protect the yarn from being abraded during clamping.

[0021] As a preferred scheme, the inside of the soft protruding strip is fixedly filled with a hard protruding strip, and the hard protruding strip is made of metal as a preferred scheme; the hard protruding strip is made of polyethylene as a preferred scheme, the existence of the hard protruding strip can make the yarn in the clamping area of the soft protruding strip present a small wave shape, can increase the clamping area, increase the force area of the static friction of the yarn, clamp more stably, and further avoid the phenomenon of sliding yarn. As a preferred scheme, the cross section of the hard protruding strip is a flat isosceles trapezoid, and the shape of the soft protruding strip is adaptively adjusted according to the hard protruding strip, which is an isosceles trapezoid, which can avoid the shearing force of sharp edges on the yarn during clamping, protect the quality of the yarn from being damaged, and can stably connect the bottom surface of the hard protruding strip and the synchronous belt.

[0022] As a preferred scheme, the upper clamping body and the first upper tension roller are connected and fixed by a metal elastic sheet, so that when the first upper tension roller is pressed down, the metal elastic sheet can be deformed by the reaction force of the first lower tension roller, and the clamping function of the first upper tension roller and the first lower tension roller is stable; the upper clamping body and the third upper tension roller are connected and fixed by a metal elastic sheet, so that when the first upper tension roller is pressed down, the metal elastic sheet can be deformed by the reaction force of the third lower tension roller, and the clamping function of the third upper tension roller and the third lower tension roller is stable.

[0023] Beneficial effects:

[0024] 1. The outer layer roller body can increase the clamping area of the yarn and avoid the generation of the sliding yarn phenomenon by dynamic deformation.

[0025] 2. The rubber support cylinder cooperates with air to support the stretching surface, and the flexible clamping cooperates with a large clamping surface, so that the clamping effect during yarn stretching is good, and the sliding yarn can be further avoided.

[0026] 3. The internal pressure of the rubber support cylinder at the bottom can be controlled, and the clamping effect is stable when the pressure is too high.

[0027] 4. The hard protruding strip and the soft protruding strip are designed on the synchronous belt to form a soft and hard combined anti-skid pattern, which can protect the yarn structure and make the stretching effect uniform on the basis of ensuring the clamping effect of the yarn.

[0028] 5. The structure of the present application is compact and reasonable, and the overall volume and structure have no great change compared with the prior art, so that the existing spinning frame of most models can be directly modified, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings.

[0030] Figure 1 The overall structure schematic diagram provided for the embodiment 1 of the present application;

[0031] Figure 2 The detailed structure schematic diagram of the second upper draft roller and the second lower draft mechanism provided for the embodiment 1 of the present application;

[0032] Figure 3 The structure schematic diagram of the second upper draft roller and the second lower draft mechanism in the separated state provided for the embodiment 1 of the present application;

[0033] Figure 4 The exploded view of the second upper draft roller provided for the embodiment 1 of the present application;

[0034] Figure 5 The front view of the second upper draft roller provided for the embodiment 1 of the present application;

[0035] Figure 6 The right view of the second upper draft roller and the second lower draft mechanism provided for the embodiment 1 of the present application;

[0036] Figure 7 The right view of the middle area of the outer roller body provided for the embodiment 1 of the present application;

[0037] Figure 8 The right view of the middle area of the outer roller body provided for the embodiment 1 of the present application;

[0038] Figure 9 The structure schematic diagram of the pressure relief valve component provided for the embodiment 1 of the present application;

[0039] Figure 10 The right view of the partial area of the synchronous belt provided for the embodiment 1 of the present application.

[0040] Explanation of the reference signs:

[0041] 100, spinning frame bearing rod; 101, upper clamping body; 102, mounting through hole; 103, first upper draft roller; 104, third upper draft roller; 105, second upper draft roller; 106, first lower draft roller; 107, third lower draft roller; 108, second lower draft mechanism; 109, yarn; 201, mounting adapter; 202, outer layer roller body; 203, middle layer roller body; 204, inner layer roller body; 205, bearing rod; 206, first bearing piece; 207, second bearing piece; 208, rubber support cylinder; 301, bearing cylinder; 302, bearing; 303, first air vent; 304, second air vent; 305, air stabilizing block; 306, air supply hole; 307, two-way pipe; 400, pressure relief valve part; 401, fixed plug; 402, tension spring; 403, sliding plug; 404, blocking plug; 405, air exhaust hole; 501, synchronous belt mounting part; 502, synchronous belt; 503, hard protruding strip; 504, soft protruding strip. DETAILED DESCRIPTION

[0042] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0043] As shown in Figures 1-10 The spinning frame synchronous belt yarn sliding control device provided by the embodiment 1 of the present application 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 formed at one end of the bottom of the upper clamping body 101, and the upper clamping body 101 is rotationally connected with the spinning frame bearing rod 100 by means of the mounting through hole 102; from the end close to the mounting through hole 102 to the end away from the mounting through hole 102 at the bottom of the upper clamping body 101, the upper clamping body 101 is sequentially provided with a first upper draft roller 103, a second upper draft roller 105, and a third upper draft roller 104;

[0044] The first lower draft roller 106 is installed on the spinning frame carrier rod 100 in a sleeved manner close to the position of the first upper draft roller 103, the third lower draft roller 107 is installed on the spinning frame carrier rod 100 in a sleeved manner close to the position of the third upper draft roller 104, and the second lower draft mechanism 108 is fixedly supported on the spinning frame carrier rod 100 close to the position of the second upper draft roller 105; in the depressed state of the upper clamping body 101, the first upper draft roller 103, the second upper draft roller 105 and the third upper draft roller 104 tightly clamp the yarn 109 with the first lower draft roller 106, the second lower draft mechanism 108 and the third lower draft roller 107 respectively; after the upper clamping body 101 is rotated and depressed to the bottom end with the mounting through hole 102 as the axis, the upper clamping body 101 is fixed and limited by external limiting tools, so that the upper clamping body 101 cannot rotate upward;

[0045] The first upper draft roller 103, the second upper draft roller 105 and the third upper draft roller 104 form an upper draft roller group, the first lower draft roller 106, the second lower draft mechanism 108 and the third lower draft roller 107 form a lower draft roller group, and the upper draft roller group and the lower draft roller group are drivingly connected with external rotary driving devices;

[0046] The first lower draft roller 106, the second lower draft mechanism 108 and the third lower draft roller 107 are respectively drivingly connected with external rotary driving devices, in the right view, the first lower draft roller 106, the synchronous belt 502 and the third lower draft roller 107 rotate counterclockwise, the first upper draft roller 103, the outer roller body 202 and the third upper draft roller 104 are respectively driven by the first lower draft roller 106, the synchronous belt 502 and the third lower draft roller 107 to rotate clockwise, the linear speed of a point on the outer surface of the first lower draft roller 106 is less than that of a point on the outer surface of the synchronous belt 502, and the linear speed of a point on the outer surface of the third lower draft roller 107 is greater than that of a point on the outer surface of the synchronous belt 502, in the process of drafting the yarn 109 by the spinning frame, the area between the first upper draft roller 103 and the outer roller body 202 and the area between the outer roller body 202 and the third upper draft roller 104 are respectively drafted, so that the spinning frame can realize double-section efficient drafting of the yarn 109.

[0047] The second upper draft roller 105 comprises a mounting link 201 fixedly mounted at the bottom of the upper clamping main body 101, the mounting link 201 is provided with a mounting arm extending downward at each end of the bottom, a bearing rod 205 is rotatably mounted on the two mounting walls, an inner roller body 204 is fixedly sleeved on the outer surface of the bearing rod 205, and an intermediate roller body 203 is arranged on the outer surface of the inner roller body 204. The intermediate roller body 203 comprises a plurality of rubber supporting cylinder bodies 208 arranged in an annular array, one side of the outer side wall of all the rubber supporting cylinder bodies 208 is fixedly connected with the inner roller body 204, and the outer side wall of all the rubber supporting cylinder bodies 208 is fixedly connected with an outer roller body 202 away from the inner roller body 204.

[0048] By adopting the above technical scheme, the design of the rubber supporting cylinder body 208 enables the outer surface of the outer roller body 202 to deform in the direction of the bearing rod 205 when the outer surface is pressed, thereby increasing the contact area with the yarn 109 and the friction force, effectively reducing the phenomenon of yarn slipping, and improving the uniformity of the yarn 109 after drafting by the spinning frame and the quality of the yarn 109.

[0049] The thickness of the side wall of the rubber supporting cylinder body 208 is twice the diameter of the hollow inner region, which can increase the contact area between the outer roller body 202 and the yarn 109 while reasonably improving the support force on the outer roller body 202, avoiding the phenomenon of large friction surface and small pressure on the yarn 109, stabilizing the effect of static friction, and further avoiding the occurrence of yarn slipping.

[0050] The outer roller body 202 is fixedly provided with a first bearing sheet 206 at one end, and a second bearing sheet 207 is fixedly provided at the end away from the first bearing sheet 206, which can improve the overall structural stability of the outer roller body 202, the intermediate roller body 203, and the inner roller body 204.

[0051] The fixing mode between the outer roller body 202, the first bearing sheet 206, and the second bearing sheet 207 is adhesive fixing, the length of the outer roller body 202 is equal to the width of the synchronous belt 502 plus 8 cm, and 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 does not affect the stability of the adhesive, avoids the occurrence of fracture, and effectively shortens the maintenance cycle of the parts, thereby enhancing the practicality of the scheme.

[0052] A plurality of first air holes 303 are arranged in a ring array on the first bearing sheet 206, and the number of the first air holes 303 is equal to the number of the rubber support cylinders 208; a plurality of second air holes 304 are arranged in a ring array on the second bearing sheet 207, and the number of the second air holes 304 is equal to the number of the rubber support cylinders 208; the first air holes 303, the rubber support cylinders 208 and the second air holes 304 are in sealed communication with each other in a one-to-one correspondence; the bearing cylinder 301 is rotatably installed on the outer side wall of the second bearing sheet 207 by the bearing 302, the bearing cylinder 301 protrudes from the side of the bearing 302 away from one end of the outer roller body 202, and the inner wall bottom of the end of the bearing cylinder 301 away from the outer roller body 202 is fixedly installed with the air stabilizing block 305, the air stabilizing block 305 is tightly attached to the second bearing sheet 207 in a sliding friction manner, the air stabilizing block 305 blocks two second air holes 304 on both sides of the bottommost second air hole 304, two air supply holes 306 are arranged through the air stabilizing block 305, the two air supply holes 306 can respectively communicate with the two second air holes 304 on both sides of the bottommost second air hole 304, the two air supply holes 306 are away from the second air holes 304, and two pipes 307 are in communication.

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

[0054] The second lower draft mechanism 108 includes a synchronous belt installation component 501 fixedly connected with the spinning frame support frame, and the synchronous belt 502 is rotatably installed on the synchronous belt installation component 501; the synchronous belt transmission is a common technology, and will not be described in detail here; the outer surface of the synchronous belt 502 is fixedly provided with anti-skid stripes, which can effectively avoid the generation of the yarn slipping phenomenon.

[0055] The anti-skid stripes include soft protruding strips 504 arranged in a linear array, and the soft protruding strips 504 are made of rubber material, which can protect the yarn 109 from being abraded during clamping.

[0056] The soft protruding strip 504 is internally fixedly filled with the hard protruding strip 503 which is made of metal material; the existence of the hard protruding strip 503 can make the yarn 109 in the clamping area of the soft protruding strip 504 present a small wave shape, can increase the clamping area, increase the force area of the static friction of the yarn 109, clamp more stably, and further avoid the yarn slipping phenomenon; the cross section of the hard protruding strip 503 is a flat isosceles trapezoid, and the shape of the soft protruding strip 504 is adaptively adjusted according to the hard protruding strip 503, which is an isosceles trapezoid, which can avoid the yarn 109 being clamped from being subjected to a shearing force of a sharp edge, protect the quality of the yarn 109 from being damaged, and can stably connect the bottom surface of the hard protruding strip 503 and the synchronous belt 502.

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

[0058] Working principle: the yarn 109 enters the yarn slipping control device of the scheme, the upper draft roller group cooperates with the lower draft roller group to clamp the yarn 109, because the linear speed of a point on the outer surface of the first lower draft roller 106 < the linear speed of a point on the outer surface of the synchronous belt 502 < the linear speed of a point on the outer surface of the third lower draft roller 107, in the process of drafting the yarn 109 by the spinning frame, the area between the first upper draft roller 103 and the outer roller body 202 and the area between the outer roller body 202 and the third upper draft roller 104 of the yarn 109 are respectively subjected to drafting, realizing double-section efficient drafting of the yarn 109 by the spinning frame; because the middle position of the outer roller body 202 is difficult to be supported by the first bearing sheet 206 and the second bearing sheet 207, so in the middle of the outer roller body 202, the part in contact with the yarn 109, such as Figure 8As shown, the deformation tends to be flat, the bottom flat outer roller body 202 is clamped with the synchronous belt 502, can be with large area to yarn 109 clamping, can effectively avoid the yarn, in the process, the external gas supply device continues and stably supplies gas to the two-way pipe 307, the gas adopts air, the air flow path is two-way pipe 307, gas supply hole 306, second vent hole 304, rubber support cylinder 208, the two rubber support cylinders 208 on both sides of the bottom rubber support cylinder 208, the inside can be filled with air, obtain the support force of high pressure air, on the basis that yarn 109 can obtain sufficient holding force, synchronous belt 502 will not exert excessive pressure, conducive to the long-term normal operation of synchronous belt 502;In the above process, if the internal pressure of the rubber support cylinder 208 is too large, the rubber support cylinder 208 can be pushed to the direction of the fixed plug 401, the tension spring 402 is compressed under stress, so that the sliding plug 403 and the rubber support cylinder 208 generate a gap, 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 foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A synchronous belt slubbing control device of a spinning frame comprising a spinning frame body including a plurality of spinning frame load bars (100) for supporting mounting of components, characterized in that: The spinning frame bearing rod (100) is provided with an upper clamping body (101), one end of the upper clamping body (101) is provided with an installation through hole (102), and the upper clamping body (101) is rotatably connected with the spinning frame bearing rod (100) through the installation through hole (102); the bottom of the upper clamping body (101) is sequentially provided with a first upper draft roller (103), a second upper draft roller (105) and a third upper draft roller (104) from the end close to the installation through hole (102) to the end away from the installation through hole (102). A first lower draft roller (106) is sleeved and installed on the spinning frame bearing rod (100) close to the first upper draft roller (103), a third lower draft roller (107) is sleeved and installed on the spinning frame bearing rod (100) close to the third upper draft roller (104), and a second lower draft mechanism (108) is fixedly supported on the spinning frame bearing rod (100) close to the second upper draft roller (105); in the depressed state of the upper clamping body (101), the first upper draft roller (103) and the first lower draft roller (106) tightly clamp the yarn (109), the second upper draft roller (105) and the second lower draft mechanism (108) tightly clamp the yarn (109), and the third upper draft roller (104) and the third lower draft roller (107) tightly clamp the yarn (109). The first upper draft roller (103), the second upper draft roller (105) and the third upper draft roller (104) form an upper draft roller group, the first lower draft roller (106), the second lower draft mechanism (108) and the third lower draft roller (107) form a lower draft roller group, and the upper draft roller group and the lower draft roller group are drivingly connected with an external rotating driving device. The second upper draft roller (105) comprises a mounting adapter (201) fixedly installed at the bottom of the upper clamping body (101), the mounting adapter (201) is provided with two downward extending mounting arms at the two ends of the bottom, a bearing rod (205) is coaxially installed on the two mounting walls, an inner roller body (204) is fixedly sleeved on the outer surface of the bearing rod (205), an intermediate roller body (203) is arranged on the outer surface of the inner roller body (204), the intermediate roller body (203) comprises a plurality of rubber supporting cylinder bodies (208) arranged in an annular array, one side of all the rubber supporting cylinder bodies (208) is fixedly connected with the inner roller body (204), and the outer side walls of all the rubber supporting cylinder bodies (208) are fixedly connected with an outer roller body (202) away from the inner roller body (204).

2. A synchronous belt let-off control device for a spinning frame according to claim 1, characterized in that: The thickness of the side wall of the rubber supporting cylinder body (208) is twice greater than the diameter of the inner hollow area.

3. A synchronous belt let-off control device for a spinning frame according to claim 1, characterized in that: The outer layer roller body (202) is fixedly installed with a first bearing sheet (206) at one end, and is fixedly installed with a second bearing sheet (207) at an end away from the first bearing sheet (206); the length of the outer layer roller body (202) is greater than the width of the synchronous belt (502) plus 8 cm, and the two ends of the outer layer roller body (202) can protrude from the two ends of the synchronous belt (502) in the width direction.

4. A synchronous belt gait control device for a spinning frame as claimed in claim 3, characterized in that: A plurality of first air holes (303) are arranged in an annular array and are penetrated and installed on the first bearing sheet (206), and the number of the first air holes (303) is equal to the number of the rubber support cylinder (208); a plurality of second air holes (304) are arranged in an annular array and are penetrated and arranged on the second bearing sheet (207), and the number of the second air holes (304) is equal to the number of the rubber support cylinder (208); the first air hole (303), the rubber support cylinder (208), and the second air hole (304) are in one-to-one correspondence and are sealed and communicated with each other; a bearing (302) is rotatably installed on the outer side wall of the second bearing sheet (207) by means of a bearing (302), and the bearing cylinder (301) protrudes from the side of the bearing (302) at an end away from the outer layer roller body (202); a gas stabilizing block (305) is fixedly installed on the inner wall bottom of the bearing cylinder (301) at an end away from the outer layer roller body (202), the gas stabilizing block (305) is tightly attached to the second bearing sheet (207) in a sliding friction manner, the gas stabilizing block (305) blocks two second air holes (304) on both sides of the second air hole (304) at the bottommost end, two air supply holes (306) are penetrated and arranged on the gas stabilizing block (305), the two air supply holes (306) can respectively communicate the two second air holes (304) on both sides of the second air hole (304) at the bottommost end, and two pipes (307) are connected in common at an end away from the second air hole (304) of the two air supply holes (306), and the two pipes (307) are connected to an external air supply device at an end away from the air supply hole (306).

5. A synchronous belt gait control device for a spinning frame as claimed in claim 4, characterized in that: A pressure relief valve component (400) is installed inside the first air hole (303), the pressure relief valve component (400) includes a fixed plug (401) fixedly installed inside the first air hole (303), a tension spring (402) fixedly connected to the fixed plug (401) at an end close to the rubber support cylinder (208), a sliding plug (403) fixedly connected to the tension spring (402) at an end away from the fixed plug (401), and a blocking plug (404) fixedly connected to the sliding plug (403) at an end away from the tension spring (402), the blocking plug (404) is in the shape of a circular truncated cone, the lower bottom surface of the blocking plug (404) is fixedly connected to the sliding plug (403), the blocking plug (404) is inserted into the rubber support cylinder (208), a plurality of exhaust holes (405) are arranged in an annular array and are penetrated and arranged on the side wall edge of the fixed plug (401), and a plurality of exhaust holes (405) are arranged in an annular array and are penetrated and arranged on the side wall edge of the sliding plug (403).

6. A synchronous belt gait control device for a spinning frame as claimed in claim 1, characterized in that: The second lower draft mechanism (108) comprises a synchronous belt mounting part (501) fixedly connected with a spinning frame support frame body, and a synchronous belt (502) is rotatably mounted on the synchronous belt mounting part (501); and the outer surface of the synchronous belt (502) is fixedly provided with anti-skid stripes.

7. A synchronous belt gait control device for a spinning frame as claimed in claim 6, characterized in that: The anti-skid stripes comprise soft protruding strips (504) arranged in a linear array.

8. A synchronous belt gait control device for a spinning frame as claimed in claim 7, characterized in that: The soft protruding strips (504) are internally fixedly filled with hard protruding strips (503).

9. A synchronous belt gait control device for a spinning frame as claimed in claim 1, characterized in that: The upper clamping body (101) and the first upper draft roller (103) are connected and fixed by a metal elastic sheet; and the upper clamping body (101) and the third upper draft roller (104) are connected and fixed by a metal elastic sheet.

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