CN102787402A - Intermittent overfeeding composite spinning device with single inclined plane groove and method - Google Patents

Abstract

The invention relates to a single-slope groove intermittent overfeed composite spinning device, process and application. The device mainly includes bridging rollers, speed-regulating rollers, holding roller pairs, upper yarn guide hooks, three-position electromagnetic switches, trigger levers, Bottom guide hook and front top roller with single slope groove. The process of intermittent overfeeding compound spinning is that the filament bundle or yarn passes through the upper yarn guide hook, and after passing through the holding roller pair to obtain overfeeding, the lower yarn guide hook is controlled by a three-position electromagnetic switch to make it pull on the front upper roller. The single-slope notch area and the nip area on both sides are randomly or periodically transposed and introduced. After exiting the front roller nip, it converges with the short fiber strands under the action of twisting to form intermittent overfeed wrapping. composite yarn. The method is unique, easy to implement, and the corresponding device is simple and easy to install, and can be used for wrapping compound spinning of intermittent gradual change and sudden overfeed change of ring spinning frame.

Description

Intermittent overfeed compound spinning device and technology of single slope groove

technical field

The invention relates to a composite spinning device for intermittent gradual change and sudden change overfeeding conversion wrapping in the field of ring spinning and a process using the composite spinning device.

Background technique

Wrapped yarn fabrics have better appearance, feel and comfort, so this kind of fabrics are more popular in the market. Since the fancy effect of wrapped yarn depends on the overfeeding of filament bundles or yarns, traditional wrapped yarns are all underfed, that is, the filament bundles are under tension, so they are spun on traditional ring spinning machines. The key technology for making this type of wrapped composite yarn lies in the overfeeding method and device of filament bundle or yarn.

There are related studies on wrapping composite yarns at home and abroad. The usual method is to introduce the filament yarn through the yarn guide rod into the middle roller or front roller, and merge with the short fiber strands before entering the front roller. Composite yarn is formed after twisting. For example, in Fan Yonghui's patented wrap spinning technology (patent application number: 200910035434.4), which is suitable for spinning ultra-high count yarns, it is introduced that two filaments are fed from the rear of the nip of the front roller, and are arranged in parallel on both sides of the draft beard. It is fed into the nip of the front roller together with it, and twisted into a wrapped yarn, which is an under-fed composite spinning yarn. Another example is Zhao Huanchen’s patented short fiber wrapping composite yarn production method and device (patent application number: 200510044026.7), which introduces that there are two kinds of raw materials drawn by the rollers in the drafting zone, and the short fiber strands are drawn from the nip of the front roller at a certain distance. Output, one twisted to become the core yarn, the other is in the state of free fiber on the surface of the transfer top roller, through the action of the air-flow boundary layer, wrapping with the core yarn at the groove of the wrapping roller to form a wrapped yarn , is also under-feeding compound spinning. There is also Zhao Huanchen's patented short fiber wrapping composite spinning device (patent application number: 200520085218.8) which is equipped with a wrapping device on the ring spinning machine yarn, including transfer rollers, wrapping rollers and link bars, to spin and wrap yarn. Although some of these devices are simple in mechanism and easy to operate, due to the high tension when the filament yarn is fed, it is impossible to realize overfeeding.

Contents of the invention

An object of the present invention is to provide a composite spinning device, through which the composite spinning device can solve the variable wrapping effect of the long/short two-axis wrapped composite yarn, and can make the production of medium and long filament bundles It can stabilize the tension and provide the fancy effect of intermittent wrapping of short fiber strands, so as to obtain the special appearance style of wrapped composite yarn and improve its quality. Another object of the present invention is to provide a composite spinning process using the above composite spinning device.

In order to achieve the above object, the principle of the present invention is to use the driving force of the front roller on the traditional ring spinning frame to drive the bridging roller and the speed-regulating roller, so that the linear speed of the holding roller is greater than that of the front roller, and at the same time the filament bundle or yarn The thread is introduced into the single inclined notch area of the front top roller and one of the nip areas on both sides through the left and right transposition of the lower yarn guide hook, so as to realize the transformation of overfeed and equal feed and the sudden change and gradual change of overfeed and equal feed. And form intermittent overfeed wrapping composite spinning.

A specific technical solution of the present invention is to provide a single-slope trough intermittent overfeed composite spinning device, which is characterized in that: it includes bridge rollers, and the bridge rollers are respectively connected to the speed-regulating rollers and the front top rollers of the ring spinning machine. Contact, the front top roller transmits power to the speed-regulating roller through the bridging roller, and the speed-regulating roller drives the gripping roller pair to rotate. The inclined notch area and the first nip area and the second nip area located on both sides of the single inclined notch area. After the filament bundle or yarn passes through the upper yarn guide hook that can move left and right, it is wound around the holding roller first. The upper roller of the pair, then winds around the lower roller of the holding roller pair, and intermittently feeds into the single-slope notch area, the first jaw area or the second jaw area through the lower yarn guide hook that moves synchronously with the upper yarn guide hook Any one of them, and then, the long filament bundle or the yarn exiting the front roller nip and the short fiber strands synchronously exiting the front roller nip are gathered and twisted to form an intermittent gradient and sudden change overfeeding transformed wrapping composite yarn.

Preferably, the upper yarn guide hook and the lower yarn guide hook are arranged on a trigger lever, and the trigger lever is connected to a three-position electromagnetic switch, and the three-position electromagnetic switch can randomly or periodically trigger positive opening or negative opening, or off to control the left, middle and right transposition of the trigger lever, thereby realizing that the lower yarn guide hook and the upper yarn guide hook are randomly or periodically exchanged in the single slope notch area (I), the second Any one of a jaw area or the second jaw area; when the three-position electromagnetic switch is normally closed, the filament bundle or the yarn is in the single-slope notch region, and the filament bundle Or the yarn is not clamped by the front roller nip to form an overfeed output convergence, and the slope of the single-slope notch area is close to the first nip area, and the vertical step is close to the second In the nip area, the more you move up the slope, the stronger the clamping effect of the front roller nip is, and it is gradually transformed into an output without overfeeding; when the positive closing start or the negative closing start, the filament The bundle or the yarn is in the first jaw area or the second jaw area, and the filament bundle or the yarn is clamped by the front roller jaw to form an equivalent normal output; The transposition between the single-slope notch area and the second jaw area changes abruptly because it is a vertical step, and the transposition between the single-slope notch area and the first jaw area changes gradually because it is a slope, and the The convergence angle of the filament bundle or the yarn passing through the first jaw region and the short fiber strands is the same as that of the filament bundle or the yarn passing through the second jaw region and the short fiber strands. The convergence angles when the strips are converged are different, and the wrapping angles for the short fiber strands are also different.

Preferably, different transfer speed ratios are adjusted by complementary changes in the diameters of the bridging rollers and the speed regulating rollers.

Preferably, the speed regulating roller is coaxially connected with the lower roller of the pair of gripping rollers, and the diameter of the speed regulating roller is smaller than that of the lower roller, so as to ensure that the surface linear velocity of the pair of gripping rollers is greater than that of the front roller. The surface linear speed of the top roller.

Another technical solution of the present invention is to provide a composite spinning process using the above-mentioned single-slope groove intermittent overfeed composite spinning device, characterized in that:

In the first step, the filament bundle or yarn passes through the upper yarn guide hook, first winds around the upper roller of the holding roller pair, and then winds around the lower roller of the holding roller pair to obtain a stable tension and from the holding roller pair Output of overfeeding amount on the lower side of the lower roller;

In the second step, the filament bundle or yarn output by overfeeding is intermittently fed into one of the single-slope notch area, the first nip area or the second nip area of the front top roller through the lower yarn guide hook, and the filament When the bundle or yarn passes through the single-slope notch area, it is not clamped by the front roller jaws, forming an overfeed output convergence. The stronger the clamping effect, it will gradually transform into an output without overfeeding; when the filament bundle or yarn passes through the first jaw area or the second jaw area, it will be clamped by the front roller jaws to form an equal amount of feed. The normal output; because the three-position electromagnetic switch can randomly or periodically trigger the positive open, or negative open, or close to control the left, middle, and right transposition of the trigger lever, so that the filament bundle or yarn can be rotated on a single slope Between the notch area and the first jaw area or between the single-slope notch area and the second jaw area, when the position is changed between the single-slope notch area and the first jaw area, the overfeed output convergence is realized Gradual change between the output with no overfeeding amount, and when the position is changed between the single slope notch area and the second jaw area, the sudden change between the overfeeding amount output convergence and the output without overfeeding amount is realized; then, Convergence and twisting of long filament bundles or yarns out of the front roller nip and short fiber strands synchronously out of the front roller nip, and the convergence angle of the filament bundle or yarn when it converges with the short fiber strands through the first nip area and the filament The convergence angles of the bundles or yarns are different when they converge with the short fiber strands through the second jaw area, and the wrapping angles of the short fiber strands are also different, finally forming a wrapping composite of intermittent gradual change and abrupt overfeeding transformation yarn.

Preferably, the overfeeding amount refers to the ratio of the linear speed of the pair of gripping rollers to the surface linear speed of the front top roller, and its value is greater than 1.0 and less than or equal to 2.5.

Preferably, the upper yarn guide hook can move back and forth and up and down to adjust the wrapping angle of the filament bundle or the yarn on the holding roller to the upper roller.

Preferably, the filament bundle or the yarn is wound 1-2 times on the upper yarn guide hook to increase the holding effect and stabilize the tension.

Another technical solution of the present invention is to provide an application of the above-mentioned composite spinning process, which is characterized in that it is used for intermittent gradual change and sudden change overfeeding transformation wrapping of short fiber strands on the ring spinning frame. yarn.

Another technical solution of the present invention is to provide an application of the above-mentioned single-slope groove intermittent overfeed composite spinning device, which is characterized in that: it is used for intermittent gradual change and sudden change of short fiber strands on the ring spinning frame Composite spinning with overfeed and transformation wrapping.

In the present invention, the overfeeding mechanism is driven by the rotation of the front roller to introduce the long tow of the outer shaft system or the overfeed yarn is output at the notch of the front roller, and converges and twists together with the short fiber strands output from the jaws of the front roller. After synthesis, it becomes a two-component overfeed wrapping composite yarn, which truly realizes the composite spinning in which the outer shaft filament bundle or yarn can intermittently change the overfeed amount and the wrapping effect on short fibers, which not only facilitates wrapping Composite yarn production, and easy to install and adjust.

The characteristics of the present invention are: ① the present invention realizes the overfeeding of filaments or yarns through simple, lightweight, effective contact transfer and speed-changing roller groups; , so that the tension and overfeeding of the filament bundle or yarn can be effectively and stably controlled; Surface, as well as the adjacent nip area, can effectively and conveniently realize the gradual change and sudden change of the filament bundle or yarn when switching between zones, as well as the overfeeding and equal feeding changes between zones, so as to realize random or periodic Special wrapping style with intermittent overfeeding and wrapping angle change; ④The tightness of wrapping, pitch and the output angle of filament bundle or yarn, that is, the convergence angle, can be convenient due to the realization of overfeeding and the different positions of the three zones. Adjust and change in order to achieve the overall effect and quality of overfeed wrapping; ⑤The wrapping composite spinning method is practical and effective, without disassembling the original spinning frame roller, and the production adjustment is convenient.

Description of drawings

Figure 1 is a schematic diagram of a single inclined groove intermittent overfeeding composite spinning device and process principle;

Figure 2 is a top view of the single inclined groove intermittent overfeeding composite spinning device and process principle;

In the figure: 1-bridge roller; 2-speed regulating roller; 3-holding roller pair; 4-upper guide hook; 5-front upper roller; 6-three-position electromagnetic switch; 7-trigger lever; 8-down guide Yarn hook; 9-short fiber strands; 10-long tow or yarn; 11-intermittent wrapping compound yarn; 12-front roller jaw; 13-front bottom roller; 14-middle roller; 15-back roller .

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

The following embodiments all adopt the single-slope groove intermittent overfeed compound spinning device shown in Figure 1 and Figure 2, including bridge roller 1, bridge roller 1 transfers the rotation of front top roller 5 to speed-regulating roller 2, and bridge bridge The diameters of the roller 1 and the speed regulating roller 2 can be changed complementary to adjust different transmission speed ratios. The speed regulating roller 2 is coaxially connected with the lower roller of the holding roller pair 3, and can transmit the rotation of the bridging roller 1 to the holding roller pair 3. The diameter of the speed regulating roller 2 is less than the diameter of the grip roller pair 3 lower rollers, to ensure that the surface linear velocity of the grip roller pair 3 is greater than the front top roller 5 surface linear velocity.

An inclined plane groove is opened on the front top roller 5, thereby forming a single-slope notch area I located in the middle and the first nip area II and the second side of the single-slope notch area I on the front top roller 5. Two jaw area III. The filament bundle or yarn 10 in the single slope notch area I is not clamped by the front roller jaw 12; the filament bundle or yarn 10 in the first jaw area II or the second jaw area III is clamped Roller jaw 12 is clamped. The slope of the single bevel notch area I is close to the first jaw area II, and the slope direction of the first jaw area II is separated from the slope direction of the single bevel notch area I; the vertical step of the single bevel notch area I is close to the second jaw area III, that is, the second jaw area III is separated from the vertical plane of the single-slope notch area I. The more the filament bundle or yarn 10 moves up the slope, the stronger the clamping effect of the front roller nip 12 is, and it gradually transforms into an output without overfeeding

After the filament bundle or yarn 10 passes through the upper yarn guide hook 4 that can move left and right, it first winds around the upper roller of the warp holding roller pair 3, then winds around the lower roller of the warp holding roller pair 3, and passes through the upper yarn guide hook 4. The synchronously moving lower yarn guide hook 8 intermittently feeds into any one of the single-slope notch area I, the first jaw area II or the second jaw area III.

The upper yarn guide hook 4 and the lower yarn guide hook 8 are arranged on the trigger lever 7, the trigger lever 7 is connected to the three-position electromagnetic switch 6, and the three-position electromagnetic switch 6 can randomly or periodically trigger positive opening, or negative opening, or Close to control the left, middle and right transposition of the trigger lever 7, so as to realize that the lower yarn guide hook 8 and the upper yarn guide hook 4 are randomly or periodically changed to the single-slope notch area I, the first jaw area II or the second jaw area. Any one of jaw zone III. When the three-position electromagnetic switch 6 is normally closed, the filament bundle or yarn 10 is in the single-slope notch area I, and the filament bundle or yarn 10 is not clamped by the front roller jaw 12, forming an overfeed output convergence. Although the filament bundle or yarn 10 is output by the overfeeding amount of the holding roller pair 3, it can only be output in the same amount due to the limitation of the clamping of the front roller jaw 12, and the excess amount is accumulated, waiting for the release output in the notch area . Therefore, when positive closing start or negative closing start, long filament bundle or yarn 10 are in the first jaw area II or the second jaw area III, and long filament bundle or yarn 10 are caught by front roller jaw 12. clamped to form an equal amount of normal output. The transposition between the single-slope notch area I and the second jaw area III changes suddenly because it is a vertical step, and the transposition between the single-slope notch area I and the first jaw area II changes gradually because it is a slope. And long tow or yarn 10 when converging angle and long tow or yarn 10 when the first jaw area II and short fiber bar 9 converge through the first jaw area II and short fiber bar 9 converge Converging angles are different, and the wrapping angles of short fiber strands 9 are also different. Then, the filament bundle or yarn 10 exits the front roller nip 12 and the short fiber sliver 9 synchronously exiting the front roller nip 12 converges and twists to form the wrapping composite yarn 11 of intermittent gradual change and sudden change overfeeding.

The present invention also provides a composite spinning process using the above-mentioned single-slope groove intermittent overfeed composite spinning device, the steps of which are as follows:

In the first step, the filament bundle or yarn 10 passes through the upper yarn guide hook 4, first winds around the upper roller of the holding roller pair 3, and then winds around the lower roller of the holding roller pair 3 to obtain a stable tension and move from the holding roller The lower side of the lower roller of the holding roller pair 3 is overfeed output. The upper yarn guide hook 4 can move back and forth and up and down to adjust the enveloping angle of the filament bundle or yarn 10 on the upper roller pair 3 of the holding rollers. The filament bundle or yarn 10 is wound 1-2 circles on the upper yarn guide hook 4 to increase the holding effect and stabilize the tension.

Due to the winding of the filament bundle or the yarn 10 on the holding roller pair 3 and the winding of the roller under the holding roller pair 3, and the clamping of the holding roller pair 3, the filament bundle or the yarn 10 The tension is more stable and the overfeed amount fluctuates less. The overfeed amount refers to the ratio of the linear speed of the gripping roller pair 3 to the surface linear speed of the front top roller 5, and its value is greater than 1.0 and less than or equal to 2.5.

In the second step, the filament bundle or yarn 10 outputted by overfeeding is intermittently fed into the single-slope notch area I, the first nip area II or the second nip area III of the front top roller 5 through the lower yarn guide hook 8 One of them, when the filament bundle or the yarn 10 is not clamped by the front roller jaws 12 through the single-slope notch area I, the overfeed output converges, and the more it moves to the slope of the single-incline notch area I , the stronger the clamping effect of the front roller jaws 12, it will gradually be converted into an output without overfeeding; when the filament bundle or yarn 10 passes through the first jaw area II or the second jaw area III, Clamped by the front roller jaw 12, an equal amount of normal output is formed; since the three-position electromagnetic switch 6 can randomly or periodically trigger positive opening, negative opening, or closing to control the trigger lever 7 left, Middle and right transpositions, so that the filament bundle or yarn 10 can be transposed between the single-slope notch area I and the first jaw area II or between the single-slope notch area I and the second jaw area III, single When changing positions between the slope notch area I and the first jaw area II, the gradual change between the output convergence of the overfeeding amount and the output without overfeeding amount is realized, while the single slope notch area I and the second jaw area III When transposition between, realize the sudden change between the overfeeding amount output convergence and the output without overfeeding amount; then, the long tow or yarn 10 exits the front roller nip 12 and the short fiber strands synchronously exiting the front roller nip 12 9 converging and twisting, the converging angle of long filament or yarn 10 and the long filament bundle or yarn 10 when passing through the first jaw area II and short fiber strands 9 through the second jaw area III and short fiber strands 9. The convergence angles during convergence are different, and the wrapping angles of the short fiber strands 9 are also different, finally forming the wrapping composite yarn 11 of intermittent gradual change and abrupt overfeeding transformation.

The following specific examples 1 to 3 are for different fibers and their linear densities, that is, selecting different filaments, different roving slivers and different composite spinning process parameters, that is, the tension of the filaments and the feeding angle, spindle speed, front Roller speed, overfeed amount. Carry out the spinning by the single-slope intermittent type overfeeding composite spinning method of the present invention, and spin into two-component intermittent type gradual change and mutation overfeeding wrapped composite yarn.

The hairiness of the composite yarn is measured by the single-side hairiness counting method. The hairiness index (F) of the obtained smooth composite yarn refers to the cumulative number of hairiness (roots/m) that protrudes from one side of the yarn per unit length and exceeds a certain length. F＝A+Be ^-Cl , l is the set extension length of hairiness (mm), A, B, C are test constants; breaking strength

(P), considering the difference in fiber thickness, the index indicating the fiber’s ability to resist external damage, unit (cN/tex); elongation at break ε=(LL ₀ )/L ₀ =ΔL/L ₀ , where L ₀ is the original L is the length of the sample at tensile fracture, ΔL is the absolute elongation value, and the elongation at break indicates the elongation and deformation capacity of the material when it breaks.

Example 1

Using the single-slope intermittent overfeed composite spinning method of the present invention, after the cotton yarn is overfed according to the above-mentioned method, it is combined with kapok fiber strands to perform intermittent gradual change and sudden change overfeed conversion to form a two-component intermittent overfeed composite spinning method. The specific process parameters of the feeding type wrapped composite yarn are shown in the table below. The wrapped composite yarn of the two-component intermittent overfeeding type spun has the appearance of obvious variable wrapping effect, as shown in Fig. 2 III → I of the wrapped composite yarn 11 of the yarn forming part of gradual change and sudden change overfeeding transformation , I→II and II→I correspond to abrupt transformation, gradual transformation and gradual transformation, wherein I, II, and III are the effects of feeding and wrapping in areas I, II, and III. The yarn-making rate is very high, which means that there is little fiber loss such as flying flowers, crumbs, and end breaks; the end-break rate is extremely low due to the continuity and protection of filaments at the time of thousand spindles, which means that the spinnability of yarn processing is good and High processing efficiency, as listed in the table below.

Example 2

Using the single-slope intermittent overfeed composite spinning method of the present invention, after the polyester filament is overfed according to the above method, the composite spinning of the intermittent gradual change and sudden change overfeed transformation with the cotton fiber sliver is formed to form a two-component For intermittent overfeed wrapping composite yarn, the specific process parameters are shown in the table below. The wrapped composite yarn of the two-component intermittent overfeeding type spun has the appearance of obvious variable wrapping effect, as shown in Fig. 2 III → I of the wrapped composite yarn 11 of the yarn forming part of gradual change and sudden change overfeeding transformation , I→II and II→I correspond to abrupt transformation, gradual transformation and gradual transformation, wherein I, II, and III are the effects of feeding and wrapping in areas I, II, and III. The yarn-making rate is very high, which means that there is little fiber loss such as flying flowers, crumbs, and end breaks; the end-break rate is extremely low due to the continuity and protection of filaments at the time of thousand spindles, which means that the spinnability of yarn processing is good and High processing efficiency, as listed in the table below.

Example 3

Using the single-slope intermittent overfeeding composite spinning method of the present invention, after nylon filaments are overfed according to the above method, they are compositely spun with wool fiber strands for intermittent gradual change and abrupt overfeeding transformation to form a two-component For intermittent overfeed wrapping composite yarn, the specific process parameters are shown in the table below. The wrapped composite yarn of the two-component intermittent overfeeding type spun has the appearance of obvious variable wrapping effect, as shown in Fig. 2 III → I of the wrapped composite yarn 11 of the yarn forming part of gradual change and sudden change overfeeding transformation , I→II and II→I correspond to abrupt transformation, gradual transformation and gradual transformation, wherein I, II, and III are the effects of feeding and wrapping in areas I, II, and III. The yarn-making rate is very high, which means that there is little fiber loss such as flying flowers, crumbs, and end breaks; the end-break rate is extremely low due to the continuity and protection of filaments at the time of thousand spindles, which means that the spinnability of yarn processing is good and High processing efficiency, as listed in the table below.

Process parameters of single-slope intermittent overfeed composite spinning with different appearance effects

Claims (10)

1. single surface groove batch (-type) overfeeding composite spinning device; It is characterized in that: comprise bridge joint roller (1); Bridge joint roller (1) contacts with the front upper roller (5) of speed governing roller (2) and ring spinner respectively; Front upper roller (5) is given speed governing roller (2) through bridge joint roller (1) with transmission of power; Drive nip roiler to (3) rotation by speed governing roller (2), on front upper roller (5), have a surface groove, thereby go up the first jaw district (II) and the second jaw district (III) that forms the monocline face notch district (I) in the middle part of being positioned at and be positioned at these both sides, monocline face notch district (I) at front upper roller (5); Endless tow or yarn (10) are behind the last twizzle (4) of ability move left and right; Elder generation's pile warp nip roiler is to the top roll of (3), and the pile warp nip roiler is to the lower roll of (3) again, and warp feeds any in monocline face notch district (I), the first jaw district (II) or the second jaw district (III) off and on the synchronization-moving twizzle (8) down of last twizzle (4); Then, endless tow or yarn (10) go out front roller nip (12) and the enveloped composite yarn (11) that converges gradual change of twisting formation batch (-type) and the conversion of sudden change overfeeding with the staple fibre yarn (9) of walking out of front roller nip (12).

2. a kind of single surface groove batch (-type) overfeeding composite spinning device as claimed in claim 1; It is characterized in that: said upward twizzle (4) and said twizzle (8) down are located on the frizzen (7); Frizzen (7) connects three-position electromagnetic switch (6); Three-position electromagnetic switch (6) can be at random or is triggered periodically that forward is opened or negative sense is opened or closed and controls the transposition of frizzen (7) left, center, right, thus realize said twizzle (8) down with said on replace at random or periodically in said monocline face notch district (I), the said first jaw district (II) or the said second jaw district (III) any one of twizzle (4); This three-position electromagnetic switch (6) is when normality is closed; Said endless tow or said yarn (10) are in said monocline face notch district (I); Said endless tow or said yarn (10) form overfeed ratio output and converge, and the slope in said monocline face notch district (I) are near the said first jaw districts (II) not by said front roller nip (12) clamping; Perpendicular steps is near the said second jaw district (III); On the slope, move, strong more by the clamping action of said front roller nip (12), gradate output into no overfeed ratio; When closed startup of forward or the closed startup of negative sense; Said endless tow or said yarn (10) are in the said first jaw district (II) or the second jaw district (III); Said endless tow or said yarn (10) are formed the normal output of equivalent by said front roller nip (12) clamping; The transposition in said monocline face notch district (I) and the said second jaw district (III) is because be perpendicular steps and suddenling change; The transposition in said monocline face notch district (I) and the said first jaw district (II) is because be slope and gradual change; And said endless tow or said yarn (10) are different with the convergence angle of said staple fibre yarn (9) when converging with said endless tow or said yarn (10) the warp second jaw district (III) with the convergence angle of said staple fibre yarn (9) when converging through the first jaw district (II), to the looping angle of said staple fibre yarn (9) also difference.

3. a kind of single surface groove batch (-type) overfeeding composite spinning device as claimed in claim 1 is characterized in that: the complementation of the diameter through said bridge joint roller (1) and said speed governing roller (2) changes regulates the different transmission rotating ratio.

4. a kind of single surface groove batch (-type) overfeeding composite spinning device as claimed in claim 1; It is characterized in that: said speed governing roller (2) links to each other to the lower roll of (3) is coaxial with said nip roiler; And the diameter of speed governing roller (2) is less than the diameter of lower roll, to guarantee that said nip roiler is to the linear resonance surface velocity of (3) linear resonance surface velocity greater than said front upper roller (5).

5. composite spinning technology that adopts single surface groove batch (-type) overfeeding composite spinning device as claimed in claim 1 is characterized in that:

The first step, endless tow or yarn (10) are through last twizzle (4), and first pile warp nip roiler is to the top roll of (3), and the pile warp nip roiler is to the lower roll of (3), to obtain stable tension and from nip roiler the lower roll downside overfeed ratio of (3) to be exported again;

Second step; The endless tow of overfeeding output or yarn (10) feed in monocline face notch district (I), the first jaw district (II) or the second jaw district (III) of front upper roller (5) off and on through twizzle (8) down, and endless tow or yarn (10) are when monocline face notch district (I), not by front roller nip (12) clamping; Forming overfeed ratio output converges; When on the slope in monocline face notch district (I), moving, strong more by the clamping action of said front roller nip (12), gradate output into no overfeed ratio; When endless tow or yarn (10) the warp first jaw district (II) or the second jaw district (III),, form the normal output of equivalent by said front roller nip (12) clamping; Because three-position electromagnetic switch (6) can be at random or periodically is toggled to opening or negative sense is opened or closed and controls frizzen (7) left, center, right and replace; Make endless tow or yarn (10) replacing between the monocline face notch district (I) and the first jaw district (II) or between the monocline face notch district (I) and the second jaw district (III); When replacing between the monocline face notch district (I) and the first jaw district (II); Realize that overfeed ratio output converges and do not have a gradual change between the output of overfeed ratio; And when replacing between the monocline face notch district (I) and the second jaw district (III), realize that overfeed ratio output converges and do not have a sudden change between the output of overfeed ratio; Then; Endless tow or yarn (10) go out front roller nip (12) and converge twisting with the staple fibre yarn (9) of walking out of front roller nip (12); Endless tow or yarn (10) are different with the convergence angle of staple fibre yarn (9) when converging through the first jaw district (II) and staple fibre yarn (9) convergence angle and endless tow or yarn (10) the warp second jaw district (III) when converging; Looping angle to said staple fibre yarn (9) is also different, finally forms the enveloped composite yarn (11) of batch (-type) gradual change and the conversion of sudden change overfeeding.

6. a kind of composite spinning technology as claimed in claim 5 is characterized in that: said overfeed ratio is meant the ratio of said nip roiler to the linear resonance surface velocity of the linear velocity of (3) and said front upper roller (5), and it is worth greater than 1.0 and smaller or equal to 2.5.

7. a kind of composite spinning technology as claimed in claim 5 is characterized in that: said go up twizzle (4) can before and after, move up and down and regulate said endless tow or said yarn (10) at the angle of contact of said nip roiler to (3) top roll.

8. the described a kind of composite spinning technology of claim 5 is characterized in that: said endless tow or said yarn (10) add around the 1-2 circle with increase effect of gripping and tension stability on the twizzle (4) on said.

9. application like the said composite spinning technology of claim 5 is characterized in that: be used on ring throstle the batch (-type) gradual change of staple fibre yarn and the composite spinning of sudden change overfeeding conversion looping.

10. the application of the described single surface groove batch (-type) overfeeding composite spinning device of claim 1 is characterized in that: be used on ring throstle the batch (-type) gradual change of staple fibre yarn and the composite spinning of sudden change overfeeding conversion looping.

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