A combing and drawing combined machine and process for ramie, flax tow and wool fibers

Abstract

The application relates to a combing and drawing combined machine and process for ramie, flax tow and wool fibers, which comprises a plurality of wool type combers, a guide table, a plurality of guide rollers and a drawing machine; the plurality of wool type combers are arranged side by side, the surfaces of the output roller pairs of the wool type combers are provided with a plurality of grooves; the guide table is arranged in front of the plurality of wool type combers; the plurality of guide rollers are correspondingly arranged with the plurality of wool type combers and are rotatably installed between the metal guide rollers; the drawing machine is arranged on one side of the guide table and comprises a rear roller pair, a middle roller, a pressure roller and a front roller pair; the rear roller pair comprises a rear roller and a rear flat roller and forms a rear nip therebetween; the front roller pair comprises a front roller and a front flat roller and forms a front nip therebetween; the combing strips output by the plurality of wool type combers are directly combined and drawn by the drawing machine, and then the output strips are output, the number of subsequent drawing channels can be reduced, the process flow can be effectively shortened, and meanwhile the quality of the output strips can be ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile machinery, and particularly relates to a carding and drawing combined machine for ramie, flax tow and wool fibers and a process. BACKGROUND

[0002] Nowadays, spinning automation and continuity are widely concerned. In cotton spinning, the carding-drawing combined machine, the thick-thin combined machine, the thin-drawing combined machine and the thick-thin-drawing combined machine technology play a positive role in reducing labor and improving equipment production efficiency and product quality. The carding-drawing combined machine technology has also begun to attract attention in recent years. The carding of cotton spinning has been combined with drawing. The cotton spinning carding machine is actually a combination of eight carding machines (carding units) and a drawing device. That is, there are eight carding units on the cotton spinning carding machine, and the output of each unit is combined on the guide table and then output after drawing by the drawing machine. Therefore, in the cotton spinning system, only one drawing is needed after cotton carding to enter the roving process.

[0003] The average fiber length of ramie, flax tow and wool fibers is about 70-120 mm. Carding and drawing need to be processed separately by wool type carding machines and drawing (gilling) machines. Each wool type carding machine has only one carding unit and can only output one carded sliver. Therefore, after carding, 4-5 drawing processes are usually used for combining and drawing, the process flow is long, and the production efficiency is low. At present, there is still a lack of a carding and drawing combined machine for ramie, flax tow and wool fibers. If the carded slivers output by multiple wool type carding machines can be directly combined and drawn, the carding and drawing technology for ramie, flax tow and wool fibers can be realized, which can effectively shorten the process flow, improve the production efficiency and reduce the labor cost.

[0004] Ramie, flax tow and wool fibers are thick and hard, and the cohesion between fibers is poor. After carding, the fibers are straightened, which further reduces the cohesion. The carded sliver output by the wool type carding machine is prone to breakage. If multiple carding machines are directly combined with the drawing machine, the machine will have to be stopped for jointing due to the breakage of one of the carded slivers during the conveying process, which reduces the production efficiency of the whole machine. In addition, the drawing machine for ramie, flax tow and wool fibers is usually a gilling machine. The combing mechanism of the gilling machine is complex and large, and the vibration is also large. If the gilling machine is directly combined with the carding machine, it will cause large vibration of the machine, which will affect the quality of the carded sliver and further affect the quality of the output sliver. In addition, the needle plate is easy to damage the fibers when it penetrates into the fiber layer, which causes entanglement of the fibers and further affects the quality of the output sliver. SUMMARY

[0005] The main purpose of the present application is to provide a carding and drawing combined machine for ramie, flax tow and wool fibers and a process, which can effectively solve the problems in the background art.

[0006] To achieve the above object, the present application is realized by the following technical solutions:

[0007] A combing and drawing combined machine for ramie, flax tow and wool fibers, comprising

[0008] A plurality of wool type combers are arranged side by side, and the surface of the combing roller pair of the wool type comber has a plurality of grooves;

[0009] A delivery table is arranged in front of the plurality of wool type combers and is composed of a plurality of rotating metal delivery rollers;

[0010] A plurality of guide rollers are arranged between the metal delivery rollers and correspond to the plurality of wool type combers and are rotatable;

[0011] A drawing frame is arranged on one side of the delivery table, and the drawing frame comprises a rear roller pair, a middle roller, a press roller and a front roller pair arranged in sequence along a drafting path, the rear roller pair comprises a rear roller and a rear flat, and a rear nip is formed therebetween, the front roller pair comprises a front roller and a front flat, and a front nip is formed therebetween, and the middle roller and the press roller rotate the sliver by rotation and make the sliver form a curved drafting path.

[0012] Preferably, the farther away from the drawing frame the guide roller is, the farther away from the corresponding wool type combing machine the guide roller is.

[0013] Preferably, the guide roller is a rotatable double-bearing roller.

[0014] A combing and drawing process for ramie, flax tow and wool fibers, which adopts the combing and drawing combined machine according to any one of the above and comprises the following steps:

[0015] S1: a plurality of the wool type combers output the combed slivers through the combing roller pair;

[0016] S2: a plurality of the combed slivers are combined on the delivery table after passing through the corresponding guide rollers and are fed into the drawing frame;

[0017] S3: in the drawing frame, the combed slivers are gripped by the rear nip, are subjected to curved drafting by the middle roller and the press roller, are gripped by the front nip and are formed into output slivers.

[0018] Preferably, the diameter of the combing roller is 50 mm, the groove angle of the groove is 45°, the depth of the groove is 3-5 mm, the pitch is unequal in size, and the tooth top width is 2 mm.

[0019] Preferably, the interval of the metal delivery rollers is 50-100 mm, and the drafting ratio between the metal delivery roller and the rear roller is 0.98-1.03.

[0020] Preferably, the total draft ratio of the drawing frame is 4-16 times, the draft ratio of the middle roller and the back roller is 1-1.6 times, the draft ratio of the front roller and the middle roller is 4-10 times, the center distance of the back roller and the front roller is 250-320 mm, the center distance of the back roller and the middle roller is 100-150 mm, the center distance of the middle roller and the pressure roller is 50-100 mm, the upper surface of the middle roller is 10 mm higher than the upper surface of the back roller, and the lower surface of the pressure roller is level with the upper surface of the front roller.

[0021] Preferably, the fiber strip fed into the sliver combing machine has a weight of 6-15 g / m, 18-26 fiber strips are fed in, the effective output length of the sliver combing machine is 25-32 mm, the feed length is 5-12 mm, and the output combing sliver has a weight of 6-15 g / m.

[0022] The present application provides a sliver combing and drawing combined machine and process for ramie, flax and wool fibers, which has the following beneficial effects:

[0023] 1. Firstly, the surface of the delivery roller is provided with a plurality of grooves, which can wrinkle the combing sliver to form curling and increase the cohesion of the fibers in the combing sliver, thereby reducing the broken ends of the combing sliver; secondly, the guide roller can rotate flexibly and rotate with the delivery of the combing sliver, which can effectively reduce the broken ends caused by friction between the combing sliver and the guide roller; finally, the present application uses a plurality of rotating metal sliver guide rollers as a sliver guide table to actively deliver the combing sliver, which can effectively avoid the deterioration of the combing sliver caused by static electricity due to friction compared with the transmission belt.

[0024] 2. The drawing frame of the present application performs curve drafting through the middle roller and the pressure roller, which has a simple structure, can form an additional friction boundary, effectively controls the floating fibers, is beneficial to improve the uniformity of the sliver, and can smoothly rotate without damaging the fibers, effectively eliminating the vibration of the machine, and ensuring the quality of the output sliver.

[0025] 3. The present application directly combines and drafts the combing slivers output by a plurality of sliver combing machines through the drawing frame to form the output sliver, which can reduce the number of subsequent drawing lanes, effectively shorten the process flow, improve the production efficiency, reduce the labor cost, and ensure the quality of the output sliver. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a plan view of the sliver combing and drawing combined machine of the present application.

[0027] Fig. 2 It is a structural schematic view of the drawing frame of the present application.

[0028] Fig. 3 It is a structural schematic view of a single delivery roller of the present application.

[0029] In the figure: 1, wool type comber; 11, delivery roller pair; 12, groove; 2, guide bar table; 21, metal guide bar roller; 3, guide roller; 4, drawing frame; 41, back roller; 42, back flat roller; 43, front roller; 44, front flat roller; 45, middle roller; 46, press roller; 5, combed sliver; 6, output sliver. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below in combination with the drawings of the present application.

[0031] The technical solutions in the present application will be clearly and completely described below in combination with embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Reference Figs. 1-3 A comber-drawing combined machine for ramie, flax tow and wool fibers, comprising

[0035] A plurality of wool type comber 1 is arranged side by side, and the surface of the delivery roller pair 11 of the wool type comber 1 is provided with a plurality of grooves 12;

[0036] A delivery bench 2 is arranged below the plurality of wool type combers 1 and is composed of a plurality of rotating metal delivery rollers 21;

[0037] A plurality of guide rollers 3 corresponding to the plurality of wool type combers 1 is rotatably arranged between the metal delivery rollers 21;

[0038] A drawing frame 4 is arranged on one side of the delivery bench 2, and the drawing frame 4 comprises a rear roller pair, a middle roller 45, a press roller 46 and a front roller pair arranged in sequence along a drafting path, the rear roller pair comprises a rear roller 41 and a rear flat roller 42, and a rear nip is formed between the two, the front roller pair comprises a front roller 43 and a front flat roller 44, and a front nip is formed between the two; the middle roller and the press roller rotate the sliver by rotation and make the sliver form a curved drafting path to strengthen the control of the fiber movement in the drafting and improve the sliver evenness after the drafting.

[0039] In a specific embodiment, the farther away the guide roller 3 is from the corresponding wool type comber 1, the farther away the guide roller 3 is from the drawing frame 4, so as to ensure that the conveying paths of the plurality of combed slivers 5 do not interfere with each other and can be combined on the delivery bench 2.

[0040] In a specific embodiment, the guide roller 3 is a rotatable double-bearing roller.

[0041] The application also provides a combing and drawing process for ramie, flax tow and wool fibers, which adopts the combing and drawing combined machine and comprises the following steps:

[0042] S1: a plurality of the wool type combers 1 outputs the combed slivers 5 through the delivery roller pair 11;

[0043] S2: a plurality of the combed slivers 5 are combined on the delivery bench 2 after passing through the corresponding guide rollers 3 respectively and are fed into the drawing frame 4;

[0044] S3: in the drawing frame 4, the combed slivers 5 are gripped by the rear nip, are subjected to curved drafting by the middle roller 45 and the press roller 46, are gripped by the front nip and are formed into output slivers 6.

[0045] In a specific embodiment, the diameter of the delivery roller is 50 mm, the groove angle of the groove 12 is 45°, the depth is 3-5 mm, the pitch is unequal width, and the tooth top width is 2 mm.

[0046] In a specific embodiment, the spacing of the metal sliver roller 21 is 50-100mm, which is less than the average length of the fibers, preventing the sliver from falling and causing broken ends, and the draft ratio between the metal sliver roller 21 and the back roller 41 is 0.98-1.03 to avoid accidental drafting.

[0047] In a specific embodiment, the total draft ratio of the drawing frame 4 is 4-16 times, the draft ratio of the middle roller 45 and the back roller 41 is 1-1.6 times, the draft ratio of the front roller 43 and the middle roller 45 is 4-10 times, the center distance between the back roller 41 and the front roller 43 is 250-320mm, the center distance between the back roller 41 and the middle roller 45 is 100-150mm, the center distance between the middle roller 45 and the pressure roller 46 is 50-100mm, the upper surface of the middle roller 45 is 10mm higher than the upper surface of the back roller 41, and the lower surface of the pressure roller 46 is flush with the upper surface of the front roller 43.

[0048] In a specific embodiment, the fiber sliver fed into the cap combing machine 1 has a weight of 6-15g / m, and 18-26 fiber slivers are fed in, the effective output length of the cap combing machine 1 is 25-32mm, the feed length is 5-12mm, and the output combed sliver 5 has a weight of 6-15g / m.

[0049] On the one hand, ramie, flax tow and wool fibers are thick and hard, and the cohesion between fibers is poor, especially after combing, the fibers are straightened, causing the cohesion to further decrease, and the combed sliver 5 output by the cap combing machine 1 is prone to broken ends, in order to solve the problem of broken ends of the combed sliver 5, the present application is designed as follows: first, the surface of the delivery roller 11 is provided with a plurality of grooves 12, which can wrinkle and curl the combed sliver 5, increase the cohesion of the fibers in the combed sliver 5, and thus reduce the broken ends of the combed sliver 5; secondly, the guide roller 3 can rotate flexibly, and it rotates with the delivery of the combed sliver 5, which can effectively reduce the broken ends caused by friction between the combed sliver 5 and the guide roller 3; finally, the present application uses a plurality of rotating metal sliver rollers 21 as the sliver guide table 2 to actively deliver the combed sliver 5, which can effectively avoid the deterioration of the combed sliver 5 caused by static electricity due to friction, and even broken ends.

[0050] On the other hand, the drawing frame 4 for ramie, flax tow and wool fibers is generally a gill box, the gill box mechanism is complex and large, and the vibration is large, if directly combined with the combing machine, it is easy to cause large machine vibration, affect the quality of the combed sliver 5, and further affect the quality of the output sliver 6, in addition, the needle plate is easy to cause damage to the fiber when it pierces into the fiber layer, resulting in fiber entanglement, further affecting the quality of the output sliver 6, in order to solve the quality problem of the output sliver 6, the drawing frame 4 of the present application is curved drafting through the middle roller 45 and the pressure roller 46, the structure is simple, can form an additional friction force boundary, effectively controls the floating fiber, is beneficial to improve the uniformity of the sliver, and will not cause damage to the fiber, and can smoothly rotate, effectively eliminates the vibration of the machine, and ensures the quality of the output sliver 6.

[0051] The present application provides a kind of for ramie, flax tow and wool fibers' combing and drawing combined machine, the combing sliver 5 of multiple wool type combing machines 1 is directly combined, drafted after through drawing frame 4, forms output sliver 6 output, can reduce subsequent drawing frame number, effectively shorten process flow, improve production efficiency, reduce labor cost, simultaneously can also guarantee the quality of output sliver 6.

[0052] Example 1

[0053] A kind of ramie, flax tow and wool fibers' combing and drawing combined machine, 8 wool type combing machines 1 are connected with 1 drawing frame 4 to form a combing and drawing combined machine, and ramie sliver is spun.Ramie fiber average length is 100mm.Ramie sliver is fed into wool type combing machine at a rate of 8g / m, and 22 ramie slivers are fed in.Wool type combing machine effective output length is 30mm, and feed length is 8mm, and the output of each wool type combing machine is 10g / m.Roller's groove angle is 45°, groove 12 depth is 4mm, pitch is unequal width, tooth top width is 2mm, and roller diameter is 50mm.The interval between adjacent metal sliver guide rollers 21 is 80mm, and the drafting ratio between the metal sliver guide roller 21 and the rear roller 41 of the drawing frame 4 is 1.02.The drawing frame 4 has the following drawing parameters: the total drawing ratio is 8.0 times, the drawing ratio of the middle roller 45 and the rear roller 41 is 1.2 times, the drawing ratio of the front roller 43 and the middle roller 45 is 6.7 times, the center distance between the rear roller 41 and the front roller 43 is 275mm, the center distance between the rear roller 41 and the middle roller 45 is 120mm, and the center distance between the middle roller 45 and the pressure roller 46 is 80mm.The upper surface of the middle roller 45 is 10mm higher than the upper surface of the rear roller 41, and the lower surface of the pressure roller 46 is flush with the upper surface of the front roller 43.The output of the combing and drawing combined machine is 10g / m, and the unevenness of the sliver is 3.15%.

[0054] Comparative Example 1

[0055] The ramie carded sliver 5 is spun on a conventional woolen carding machine, and then one drawing (gilling) is performed. The average length of the ramie fiber is 100 mm. The sliver fed into the carding machine is 8 g / m, and 22 slivers are fed in. The effective output length of the woolen carding machine is 30 mm, the feed length is 8 mm, and the output of the carded sliver 5 from each woolen carding machine is 10 g / m. Eight carded slivers 5 are randomly combined to be fed into the gilling machine for drafting, and the output of the ramie sliver after gilling is 10 g / m, and the unevenness of the sliver is 3.78%, which is worse than that in Example 1. It can be seen that the carding and drawing combined machine can achieve better quality of the output sliver while reducing one drawing process.

[0056] Example 2

[0057] A carding and drawing combined machine for wool fibers such as ramie, flax, and short hemp is provided, which is composed of four woolen carding machines 1 and one drawing machine 4, and is used for spinning flax and short hemp slivers. The average length of the flax and short hemp fiber is 80 mm. The sliver fed into the woolen carding machine is 15 g / m, and 18 slivers are fed in. The effective output length of the woolen carding machine is 25 mm, the feed length is 5 mm, and the output of the carded sliver 5 from each woolen carding machine is 15 g / m. The groove angle of the delivery roller is 45°, the groove depth is 5 mm, the pitch is unequal width, the tooth top width is 2 mm, and the roller diameter is 50 mm. The interval between adjacent metal sliver guide rollers 21 is 50 mm, and the drafting ratio between the metal sliver guide roller 21 and the back roller 41 of the drawing machine 4 is 0.98. The drafting parameters of the drawing machine 4 are as follows: the total drafting ratio is 4.0 times, the drafting ratio of the front roller 43 and the middle roller 45 is 4.0 times, the center distance between the back roller 41 and the front roller 43 is 250 mm, the center distance between the back roller 41 and the middle roller 45 is 100 mm, and the center distance between the middle roller 45 and the press roller 46 is 50 mm. The upper surface of the middle roller 45 is 10 mm higher than the upper surface of the back roller 41, and the lower surface of the press roller 46 is flush with the upper surface of the front roller 43. The output of the flax and short hemp sliver from the carding and drawing combined machine is 15 g / m, and the unevenness of the sliver is 3.1%, which is high in quality.

[0058] Example 3

[0059] A combing and drawing combined machine for flax, hemp and other wool fibers, which is composed of 12 wool type combers 1 and one drawing frame 4, and is used for spinning flax sliver. The average length of flax fiber is 120 mm. The sliver fed into the wool type comber has a weight of 6 g / m, and 26 slivers are fed in. The effective output length of the wool type comber is 32 mm, and the feed length is 12 mm. The output of each wool type comber is 6 g / m. The groove angle of the delivery roller is 45°, the groove depth is 3 mm, the pitch is unequal width, the tooth top width is 2 mm, and the roller diameter is 50 mm. The interval between adjacent metal guide rollers 21 is 100 mm, and the draft ratio between the metal guide roller 21 and the back roller 41 of the drawing frame 4 is 1.03. The draft parameters of the drawing frame 4 are as follows: the total draft ratio is 12.0, the draft ratio of the front roller 43 and the middle roller 45 is 1.3, the draft ratio of the front roller 43 and the middle roller 45 is 7.5, the center distance between the back roller 41 and the front roller 43 is 320 mm, the center distance between the back roller 41 and the middle roller 45 is 150 mm, and the center distance between the middle roller 45 and the pressure roller 46 is 100 mm. The upper surface of the middle roller 45 is 10 mm higher than the upper surface of the back roller 41, and the lower surface of the pressure roller 46 is level with the upper surface of the front roller 43. The output of the combing and drawing combined machine is 6 g / m, the evenness is 3.53%, and the quality of the output sliver is high.

[0060] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A process for the carding and drawing of ramie, flax tow and wool fibres, characterised in that: The application relates to a carding and drawing combined machine A plurality of wool type carding machines are arranged side by side, the surface of the delivery roller pair of the wool type carding machines is provided with a plurality of grooves, the diameter of the delivery roller is 50 mm, the groove angle of the grooves is 45 DEG, the depth of the grooves is 3-5 mm, the pitch is unequal size width, and the tooth top width is 2 mm; A delivery table is arranged in front of the plurality of wool type carding machines and is composed of a plurality of rotating metal delivery rollers, the plurality of rotating metal delivery rollers are used as the delivery table and are used for actively conveying the carded sliver, the interval of the metal delivery rollers is 50-100 mm, and the draft ratio between the metal delivery roller and the rear roller is 0.98-1.03; A plurality of guide rollers are arranged between the metal delivery rollers and correspond to the plurality of wool type carding machines and can rotate; A drawing frame is arranged on one side of the delivery table, the drawing frame comprises a rear roller pair, a middle roller, a pressure roller and a front roller pair which are arranged in sequence along a drafting path, the rear roller pair comprises a rear roller and a rear flat, and a rear nip is formed between the rear roller and the rear flat, the front roller pair comprises a front roller and a front flat, and a front nip is formed between the front roller and the front flat, the middle roller and the pressure roller rotate the sliver by rotation and make the sliver form a curved drafting path; The application further comprises the following steps: S1: the plurality of wool type carding machines output carded slivers through the delivery roller pair; S2: the plurality of carded slivers are combined on the delivery table through the corresponding guide rollers and are fed into the drawing frame; S3: in the drawing frame, the carded slivers are gripped through the rear nip, are subjected to curved drafting through the middle roller and the pressure roller, are gripped through the front nip and are output as output slivers.

2. A process for the carding and drawing of ramie, flax tow and wool fibres according to claim 1, characterized in that: The farther the guide roller is from the drawing frame, the farther the distance between the guide roller and the corresponding wool type carding machine is.

3. A process for combing and drawing of ramie, flax tow and wool fibre as claimed in claim 1 wherein: The guide roller is a double-bearing roller which can rotate.

4. A process for combing and drawing of ramie, flax tow and wool fibre as claimed in claim 1 wherein: The total draft ratio of the drawing frame is 4-16 times, the draft ratio of the middle roller and the rear roller is 1-1.6 times, the draft ratio of the front roller and the middle roller is 4-10 times, the center distance between the rear roller and the front roller is 250-320 mm, the center distance between the rear roller and the middle roller is 100-150 mm, the center distance between the middle roller and the pressure roller is 50-100 mm, the upper surface of the middle roller is 10 mm higher than the upper surface of the rear roller, and the lower surface of the pressure roller is level with the upper surface of the front roller.

5. A process for combing and drawing of ramie, flax tow and wool fibre as claimed in claim 1 wherein: The fiber sliver fed into the wool type carding machine has a weight of 6-15 g / m, 18-26 fiber slivers are fed in, the effective output length of the wool type carding machine is 25-32 mm, the feeding length is 5-12 mm, and the output carded sliver has a weight of 6-15 g / m.

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