CN112301476A

CN112301476A - Twisting device and twisting machine using same

Info

Publication number: CN112301476A
Application number: CN201910691635.3A
Authority: CN
Inventors: 王宝定
Original assignee: Shaoxing Yifang Machinery Manufacturing Co ltd
Current assignee: Shaoxing Yifang Machinery Manufacturing Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2021-02-02

Abstract

A twisting device comprises a twister and a bracket. The twister comprises an initial twister, a rotary twister and a yarn winding device, wherein a plurality of strands fed into the twister are twisted by the initial twister, then bent to pass through the rotary twister, rotated and twisted, and then wound on the yarn winding device, and then unwound from the yarn winding device, folded, returned to the rotary twister, bent once again, twisted and output to the collecting and winding device. Compared with the traditional two-for-one twister and the traditional ring spinning frame, the twisting machine using the twisting device can finish the two procedures of doubling and twisting of the two-for-one twister or the two procedures of spinning and spooling of the ring spinning frame in one twisting machine, thereby greatly saving the field, equipment, power consumption and manpower required by the traditional two-for-one twister and the traditional ring spinning frame.

Description

Twisting device and twisting machine using same

Technical Field

The invention belongs to the field of textile equipment, and particularly relates to a Twisting device (English is 'Twisting device') and a Twisting machine (Twisting machine) using the Twisting device.

Background

The textile industry typically requires twisting of single-strand yarns to wind and twist two or more single-strand yarns into a yarn prior to spinning with the yarns. In the spinning process, the sliver (strand, yarn, thread) is twisted or axially wound around its axis to obtain "twist" or wrapping, which is called "twisting". The twisting can make the fibers or the monofilaments cohere and intertwined with each other without loosening or slipping, and has certain physical and mechanical properties (such as strength, elongation, elasticity and the like) and appearance characteristics (such as luster, hairiness, hand feeling and the like). At present, the main twisting equipment mainly comprises a two-for-one twister and a ring spinning frame. The name of the two-for-one twister is derived from that a spindle (English is "spindle") twisting device can realize the twisting effect of one-for-two twisting for the fed parallel multi-strand, besides the spindle twisting device, the two-for-one twister also comprises a collection winding device which actively draws, collects and winds the multi-strand twisted and output by the spindle twisting device into a multi-strand bobbin, the collection winding device usually comprises a Roller (English is "Roller", Chinese is interpreted as "Roller") which continuously rotates or comprises a pair of rollers which are tightly attached and rotate oppositely, and the rollers are usually called as "winding rollers" in the textile industry. The ring spinning frame adopts a spindle twisting device which is different from a two-for-one twister and can only realize the twisting effect of one-for-one twisting, and the spindle twisting device of the ring spinning frame, which comprises a spindle for driving a central quill of a cop to continuously rotate, a steel wire ring for drawing raw material roving to continuously rotate and twist and a rotating track steel collar of the steel wire ring, is used for twisting the raw material roving into spun yarn and winding the spun yarn into a cop, and then a plurality of cops are connected on a winder to form a final product cheese.

As shown in the drawing (a) of fig. 1, the conventional twisting process performed by the two-for-one twister is divided into two processes of "doubling" and "twisting", wherein the left side of a right arrow in the drawing (a) of fig. 1 shows the process of "doubling" and the right side of the arrow shows the process of "twisting". As shown in the drawing by the "doubling" process on the left side of the arrow, doubling is to merge the single threads 2 from the different single bobbins 1 into parallel multi-thread strands 3 and wind them into parallel multi-thread bobbins 4. The principle is very simple, all the single wires 2 only need to pass through a common channel and then are directly wound into parallel multi-strand bobbins 4, and the parallel multi-strand bobbins 4 produced after doubling are used as raw materials of the next twisting process. As shown in the twisting process on the right side of the arrow in fig. 1 (a), the parallel multi-strand wires 3 on the parallel multi-strand bobbin 4 are usually unwound from the parallel multi-strand bobbin 4 to be fed into the spindle twisting device of the two-for-one twister for rotary twisting to generate twisted multi-strand wires 5, and the twisted multi-strand wires 5 with the "twist" are drawn out from the spindle twisting device by the winding roller 12 and then wound into the twisted multi-strand bobbin 6 to complete the twisting process. The part indicated by reference numeral 7 and its lead-in and arrow in the (a) drawing of fig. 1 is the spindle and the spindle twisting device of the two-for-one twister, and the black arc solid arrow in the drawing indicates that the spindle 7 will rotate ceaselessly during twisting. In addition, the drawing (a) of fig. 1 shows, with reference numeral 13, the traversing yarn guide device commonly provided in twisting machines for forming yarn bobbins of regular shape, the arrows in the two winding rollers 12 of the winding device in the drawing (a) of fig. 1 indicate the rotating directions of the two winding rollers 12 rotating in opposite directions, in fact, the two winding rollers 12 are the power sources for unwinding the whole multi-strand yarn from the parallel multi-strand bobbin 4 and continuously advancing through the spindle twisting device, in reality, a continuously rotating roller is often used directly as the winding device for drawing out and winding the multi-strand yarn in the spindle twisting device of the two-for-one twisting machine onto the bobbin tightly fitted on the roller, and the multi-strand yarn is often passed through a gathering 14 shown in the left part of a vertical chain line in fig. 2 (hereinafter referred to as "left side drawing of fig. 2") between the traversing yarn guide device 13 and the spindle twisting device, the thread-collecting loop 14 is also often referred to in reality as a "thread-guide". The double arrow next to the traversing guide 13 in the (first) drawing of figure 1 indicates that the traversing guide 13 draws the twisted strands back and forth along the axis of the twisted multi-strand bobbin 6 in a regular movement back and forth. In fact, the doubling process on the left side of the drawing (a) of fig. 1 is also provided with the winding device and the traverse guide device, and is omitted for the sake of brevity. The left side of fig. 2 shows the principle of the spindle twisting device of the two-for-one twister applying a rotary twist to the parallel strands 3. As shown in the left side of fig. 2, the parallel stranded bobbins 4 are inserted on a cylindrical hollow spindle 7 in a hollow spindle 701 of a spindle device, the cylindrical hollow spindle 7 is communicated with an opening at the bottom center of the hollow spindle 701, the hollow spindle 701 is sleeved on a twisting disc 8 below the hollow spindle 701 through the opening at the bottom center of the hollow spindle 701, parallel stranded wires 3 unwound from the parallel stranded bobbins 4 firstly enter the inside of the hollow spindle 7 from above, then downwards and then bend to enter a horizontal transverse channel 802 inside the twisting disc 8, wherein the so-called "transverse channel" as shown in the left side of fig. 2 means that an included angle exists between the transverse channel 802 and the inner channel of the hollow spindle 7, and the included angle is generally a right angle of 90 degrees; the twisting disk 8 has a coaxial transmission shaft 803 at the center below the bottom as shown in the left side of figure 2, the twisting disk 8 is arranged on the twisting disk bracket 11 and can freely rotate around the axis of the twisting disk, the transmission shaft 803 is attached to the transmission belt 10 (also called "tangential belt") and is driven by the friction transmission of the transmission belt 10 (the moving direction of the tangential belt is shown by the lowest black solid straight arrow in the left side of fig. 2) to rotate so as to drive the twisting disk 8 to rotate continuously (as shown by the black solid arc arrows on both sides of the twisting disk 8 in the left side of fig. 2), and the rotation axis of the twisting disk 8 and the axis of the inner channel of the hollow spindle 7 are generally in the same straight line direction, as shown by the vertical chain line in the enlarged region at the upper right corner of the left side of fig. 2; as shown in the left side of fig. 2, the strands fed out from the traverse channel 802 inside the twisting disk 8 will be pulled upward by the collecting and winding device, represented by a pair of winding rollers 12, above the spindle twisting device (as shown by the single-line arrow at the top in the left side of fig. 2), and the traverse guide 13 and the twisting multi-strand bobbin 6 forming the bobbin with regular outer shape shown in the (first) diagram of fig. 1 are omitted for the sake of saving space above the left side diagram of fig. 2. As shown in the left side of fig. 2 and referring to fig. 1 (a), because the collecting and winding device represented by a winding roller 12 above the spindle twisting device pulls the strands, the strands are pulled axially everywhere, and because the transverse channel 802 in the twisting disk 8 is not in the same straight direction as the internal channel of the hollow spindle 7, the strands will be bent when being re-bent from the inside of the hollow spindle 7 from top to bottom into the transverse channel 802 in the twisting disk 8 and will be tightly attached to the bend 801 in the twisting disk 8, because the resultant force of the axial pulling force of the strands on both sides of the bend 801 will press the position of the bend 801, and thus the bending position 801 of the twisting disk will generate corresponding reaction force to the strands, which is equivalent to that the bend 801 will generate a radial clamping force to the strands, in fact, for any section of stranded wire with axial tension, the bending can generate clamping effect on the stranded wire at the bending position. At the same time, as the twisting disk 8 is continuously rotated around the axial lead of the internal channel of the hollow spindle 7 and the axial lead of the twisting disk 8 under the driving of the lower driving belt 10, the rotation of the twisting disk 8 can twist the multi-strand wires unwound from the parallel multi-strand bobbin 4 to generate a twist, and in fact, the twisting process is equivalent to pinching the multi-strand wires at the bend 801 with fingers and rotating the multi-strand wires around the axial direction of the multi-strand wires to form the twist; as shown in the left side of fig. 2, the twisted yarn passes around the position of the bend 801 and then enters the transverse passage 802 of the twisting disk 8, so that the twisted yarn is twisted from the position of the bend 801 to the position before the collection and winding device represented by the pair of winding rollers 12 along with the rotation of the twisting disk 8, thereby realizing the function of "one turn and two twists". In order to distinguish the strands twisted before and after the position of the bend 801, the left side of fig. 2 is marked with the reference numeral 501, which is named as "front twisted strand" in the present specification, and the strands twisted again after the position of the bend 801 are marked with the reference numeral 502, which is named as "rear twisted strand" in the present specification. As shown in the left side of fig. 2, the rear twisted multi-strand wires 502 (a part of the rear twisted multi-strand wires 502 in the left side of fig. 2 is schematically shown by the chain double-dashed lines without the spiral line pattern, and the single-line arc arrow in the chain double-dashed lines indicates that the rear twisted multi-strand wires 502 are pulled upward while rotating) output from the transverse channel 802 of the twisting disk 8 will rotate around the rotation axis of the twisting disk 8 (i.e., the axis of the hollow spindle 7), so as to generate a convolution, which is called "balloon", shown by the single-line arc arrow in the middle of the left side of fig. 2 from the outlet of the transverse channel 802 of the twisting disk 8 to the current collecting ring 14 before the winding device, and the balloon 9 surrounds the whole parallel multi-strand bobbin 4 and the hollow spindle 701 in the container thereof around the rotation axis of the twisting disk 8. The drawing (c) of fig. 1 shows the twisting principle of the spindle twisting device of the aforementioned two-for-one twisting machine in a concise and abstract form, and the drawing (c) and the drawing (t) and drawing (e) of fig. 1 both refer to two yarns forming a multi-ply yarn by a hollow yarn and a solid thick yarn. As shown in the drawing (c) of fig. 1, after being unwound from the bobbin indicated by the lead line with reference number 4, one strand of multi-strand is bent to generate a radial clamping force to the multi-strand and is drawn to the collection winding device indicated by the lead line with reference number 12, two twisted multi-strand segments of front twisted multi-strand 501 and rear twisted multi-strand are generated along with the rotation of the bent part of the multi-strand, the rotation track of the multi-strand bent part 801 is indicated by the dotted oval and the arrow on the dotted oval and the hollow arc arrow in the drawing (c), comparing the twisting effect of the multiple strands on the left and right sides of a horizontal arrow in the drawing (c), it can be seen that the twisting directions of the multiple strands before and after the bend 801 are consistent, so that one rotation of the bend 801 can apply two turns to the multiple strands unwound from the bobbin and drawn between the collecting and winding devices illustrated by a pair of winding rollers 12. Referring to the left side of fig. 2, since the back twisted multi-strand 502 rotates to generate the aforementioned balloon 9 in reality, the reference numeral 9 is attached to the back of the reference numeral 502 in the (c) diagram to show the balloon formed in reality.

The twisting principle of the conventional ring spinning frame is shown in the drawing (B) of FIG. 1. In the "spun yarn" step of twisting the roving in the ring spinning frame shown on the left side of the right horizontal arrow in the figure to generate the spun yarn, the roving 3 'is unwound from the roving bobbin 4' by the traction of the pair of winding rollers 12, and is continuously rotated along the ring 16 by the traction of the traveler 15 to twist the roving positioned between the traveler 15 and the winding roller 12 to form the spun yarn 5', and the spun yarn 5' is wound on the cop 17 to form a cop while being rotationally pulled by the traveler 15, and the cop 17 is also called a "bobbin". Then, the spun yarn wound on a plurality of fine cop yarns is connected together and wound into a thick and big bobbin yarn 6' of the final finished spun yarn through a winding process shown on the right side of a right horizontal arrow in a drawing (B). The spooling process is required because the more spun yarn wound on the rotating quill 17, the more power consumption required to drive the quill 17 to rotate, and the more uniform the twist applied to the spun yarn 5', because the outer diameter of the quill 17 becomes larger after the multi-layer spun yarn is wound on the quill 17, which results in a decrease in the linear speed of winding the spun yarn under the same rotation angular speed. Note that the multi-strand yarn (here, the roving yarn 5') fed from the winding roller 12 to the traveler 15 is bent at the traveler 15, and the multi-strand yarn is subjected to a radial clamping force at the bent portion of the traveler 15 by the winding pulling force of the multi-strand yarn formed by the self-rotation of the quill 17, which is the same as the radial clamping force at the bent portion 801 of the multi-strand yarn in the aforementioned two-for-one twister. The principle of the rotary twisting of the ring spinning frame is equivalent to that the roving yarn at the position where the bead ring 15 is pinched by fingers rotates around the multi-strand yarn clamping output port of the winding roller 12, so that the multi-strand yarn output from the winding roller 12 is twisted to form spun yarn, and the number of twists applied to the roving yarn in unit time is related to the rotating speed of the bead ring and the output speed of the roving yarn of the winding roller 12. The (t) drawing and (c) drawing of fig. 1 show the twisting principle of ring spinning with two rolls of single-strand bobbin 1 as raw material, wherein there are two arc-shaped arrows in the (t) drawing, one arc-shaped arrow below indicates the rotating direction of the steel wire ring 15 along the steel collar 16, one arc-shaped arrow above indicates the winding rotating direction of the quill 17, it can be seen from the (t) drawing that the multi-strand is actually clamped by the steel wire ring 15 and pulled to rotate around the clamping output port of the winding roller 12, so that the twisting operation is performed to form the twisted multi-strand 5, and the twisted multi-strand 5 is then wound and collected on the quill 17, and it is noted that the twisting principle of the roving in the ring spinning device shown in the (b) drawing is consistent with the twisting principle of the multi-strand shown in the (t) drawing. As shown in the drawing, the principle of ring spinning twisting is actually equivalent to that a multi-strand winding and conveying device represented by a pair of winding rollers 12 pinches the upper ends of the multi-strands, the lower ends of the multi-strands are wound on a bobbin of cop, the cop continuously rotates around a multi-strand clamping output port of the winding and conveying device to generate twist, meanwhile, the bobbin of the cop rotates to wind the twisted multi-strands on the bobbin, and when the cop 17 rotates for one circle, the steel wire ring 15 also pulls the roving to rotate for one circle along the steel collar 16 and applies one twist to the roving, so that the ring spinning frame can realize the twisting effect of one-turn-one-twist on the roving or the multi-strands. The cop indicated by the reference numbers "15, 17" and the lead thereof in the (penta) drawing indicates that the cop represents the action of the steel wire ring 15 and the quill 17 in the (delta) drawing, the dotted ellipse in the (penta) drawing and the arrow and the arc arrow thereon indicate the rotating direction of the cheese, and the reference number 16 in the drawing indicates the rotating track of the cop, namely the rotating track of the steel collar 16 guiding the steel wire ring 15 in the (delta) drawing.

The two traditional twisting devices of the two-for-one twister and the ring spinning frame are really ingenious as shown in fig. 1, but the defects are obvious, namely, the two traditional twisting devices and the ring spinning frame both need two different processes, for example, the two-for-one twister needs two processes of doubling and twisting, the ring spinning frame needs a spinning process and a spooling process, the different processes mean energy consumption of different fields, production devices and two places, and if the final twisted multi-strand bobbin can be directly generated from single-strand yarn in one step or half of the field and power can be saved from roving to the final finished bobbin yarn in one step, the economic benefit can be greatly improved.

Disclosure of Invention

In order to solve the defects of the conventional twisting equipment including the two-for-one twister and the ring spinning frame pointed out in the section of the background art, the twisting device and the twisting machine using the twisting device provided by the invention can combine two processes required by the conventional two-for-one twister and the ring spinning frame into a whole, and directly produce finished twisted multi-strand bobbins or cone yarns from multi-strand single-ply or roving yarns in one go.

Specifically, the twisting device provided by the invention can be used for twisting and outputting the fed multiple strands as in other prior art schemes disclosed at present, and comprises a twister for twisting the multiple strands and a bracket for mounting the twister. Compared with other disclosed technical solutions, the twisting device provided by the present invention is characterized in that the twister comprises an initial twister which can clamp the multiple strands fed into the twisting device and twist the multiple strands by continuous rotation. The twister also comprises a rotary twister which can bend and rotate the multi-strand wires so as to twist the multi-strand wires, and the twister also comprises a yarn winding device, wherein the multi-strand wires output after being twisted by the initial twister firstly enter the rotary twister, and the multi-strand wires are wound on the yarn winding device after being twisted by the rotary twister. The yarn winder can rotate continuously, the rotating direction of the yarn winder is consistent with the rotating direction of the rotating twister, but the rotating angular speeds of the yarn winder and the rotating twister are different, so that the yarn winder can pull out and wind the stranded yarn from the rotating twister on the yarn winder or the rotating twister can pull out and wind the stranded yarn on the yarn winder. In the present invention, the twisted yarn wound around the yarn winder is unwound from the yarn winder and folded back to the rotary twister, and the twisted yarn folded back to the rotary twister is rotated together with the rotary twister and is output after being bent at least once. In fact, the twisting of the multi-strand yarn according to the present invention can be divided into two stages, the first stage is that the multi-strand yarn is wound on the yarn winding device after the initial twisting device and the rotary twisting device perform two twisting processes on the multi-strand yarn, and the yarn winding device is equivalent to the quill 17 in the ring spinning frame described in the section of the aforementioned background art and fig. 1; in the second stage, the multiple strands are unwound from the yarn winder, folded back to the rotary twister, rotated and output along with the rotary twister after being bent for one time, and the second stage is equivalent to the twisting process of one-turn two-twist of the two-for-one twister.

The invention preferably uses an embodiment in which the rotary twister and the winder are rotated together in the same direction by means of a differential gear and a differential speed at the angular speed is ensured between the two. Preferably, the yarn winder is further positioned outside the rotary twister, the twisted multiple strands are wound on the yarn winder from the outside of the yarn winding position of the yarn winder, and the differential transmission device is positioned inside the rotary twister.

As a preferred further embodiment, the rotary twister comprises a hollow rotating shaft which is installed on the bracket and can be driven to rotate freely, the rotary twister further comprises a hollow rotating drum which is fastened with the rotating shaft into a whole, and the stranded wires fed into the rotary twister are bent after passing through the hollow interior of the rotating shaft, penetrate out of the rotating shaft and then enter a yarn guide channel on the wall of the rotating drum; the multiple strands penetrate out of the yarn guide channel and then are wound on the yarn winder. Because the difference of angular speed exists between the rotary twister and the yarn winder, the multi-strand yarn before the yarn winder can be subjected to axial pulling force, as in the background technology, the multi-strand yarn with the axial pulling force can generate radial clamping effect on the multi-strand yarn when being bent once, the twisting effect of single twisting of the multi-strand yarn can be realized like a ring spinning frame by combining the rotation of the rotating shaft of the rotary twister, a differential transmission device can be accommodated in the hollow rotating drum of the rotary twister, and the multi-strand yarn can be conveniently wound on the yarn winder from the exterior of a subsequent yarn winder after entering the drum wall of the rotating drum with enlarged size from the rotating shaft. The yarn winding device comprises a hollow center shaft positioned on the axis of rotation of the yarn winding device and a yarn winding barrel capable of freely rotating around the center shaft, wherein multiple strands penetrating out of a yarn guide channel of the rotary drum are wound on the yarn winding barrel, the yarn winding barrel is actually a core component of the yarn winding device, the hollow center shaft is provided with a hollow inner channel which is axially through and through which the multiple strands can pass, the multiple strands wound on the yarn winding barrel enter the hollow inner channel of the center shaft after being unwound and then are folded back to the rotary twister through the hollow inner channel, and the multiple strands folded back to the rotary twister enter the hollow inner part of the rotary shaft and are output after at least one bending.

As a further preferable implementation when the above embodiment is implemented, in the present invention, a hollow channel axially penetrating through the entire rotating shaft is provided in the rotating shaft axis direction of the hollow rotating shaft, and the stranded wire fed into the rotary twister is first threaded into the hollow channel; a yarn guide block is fixedly inserted on the shaft body of the rotating shaft, two channels for the multiple strands to pass through are arranged in the yarn guide block, an opening at one end of a first channel is in butt joint with the hollow channel of the rotating shaft, the multiple strands fed into the rotary twister are bent and then output to the outside of the rotating shaft from an opening at the other end of the first channel to enter the yarn guide channel of the rotating drum; the middle shaft is provided with a yarn channel which axially penetrates through the whole middle shaft, the yarn channel is a hollow inner channel which is axially penetrated and can be used for the multiple strands to pass through, one end of the yarn channel is opened and is right opposite to one end of the hollow channel of the rotating shaft, and the multiple strands unwound from the winding drum enter the hollow channel of the rotating shaft through the yarn channel in a turning-back mode. One end opening of a second channel in the two channels for the multiple strands to pass through of the yarn guide block is butted with the hollow channel of the rotating shaft so that the multiple strands folded back to the rotating shaft can penetrate into the second channel, and the multiple strands penetrating into the second channel are bent at least once and then output out of the rotating shaft from the other end opening of the second channel so as to be output from the twisting device.

On the basis of the foregoing preferred embodiment, as a preferred embodiment of the differential transmission device, in the present invention, a central shaft fixing member that does not rotate with the bobbin by using magnetic force at a spacing is fixedly installed at a position of the central shaft outside the bobbin; a driving gear capable of driving the differential transmission device is fastened on the rotating shaft, and the driving gear is coaxial with the rotating shaft and rotates along with the rotating shaft. The differential transmission device comprises a first transmission gear meshed with a driving gear extending into the rotary drum, and further comprises a second transmission gear coaxially and fixedly integrated with the first transmission gear, and further comprises a gear mounting disc used for mounting the first transmission gear and the second transmission gear, and the gear mounting disc is fastened on the middle shaft. The yarn winding device further comprises a driven gear which is fixedly connected with the yarn winding barrel into a whole, the rotating axis of the driven gear is superposed with the rotating axis of the yarn winding device, and the driven gear is meshed with the second transmission gear. Therefore, the driving gear integrated with the rotating shaft is transmitted to the driven gear integrated with the yarn winding barrel through the variable speed of the two transmission gears, and the rotation angular speed difference of the rotary twister and the yarn winding device rotating in the same direction can be set through adjusting the gear ratio of the gears meshed with each other. The reason why the middle shaft is fixed by the middle shaft fixing member so as not to rotate with the winding bobbin is that in the present embodiment, two gear positions of the differential transmission device are indirectly fixed by the middle shaft, and the middle shaft fixing member using the air-separating magnetic force is shown in the left side of fig. 2 because a conventional fixing mechanism tends to interfere with the multi-strand output from the twisting device of the similar two-for-one twister, and because the multi-strand output from the twisting device of the similar two-for-one twister rotates around the twisting device as shown in the air ring 9 of the left side of fig. 2, a space for the multi-strand to rotate continuously and completely around the middle shaft can be created by attracting and fixing the middle shaft by the air-separating magnetic force. Of course, other embodiments of the differential transmission are possible and certainly there is room for further improvement.

In the specific implementation of the initial twister, it is preferable that the initial twister and the rotary twister rotate simultaneously through a mechanical linkage, and the mechanical linkage may adopt a gear mechanism or a synchronous belt.

In addition, in the initial twister, it is preferable that the initial twister which grips the strands fed to the twisting device and applies twisting to the strands by continuous rotation has a rotation direction opposite to that of the rotary twister, so that the twisting effect of the strands between the initial twister and the rotary twister can be increased. Of course, the user of the twisting device provided by the invention can set the rotation direction of the initial twister to be consistent with the rotation direction of the rotary twister according to the performance specification of specific products.

The initial twister is preferably embodied in such a way that the effect of clamping the strands is achieved by bending the strands, since the mechanical mechanism for bending the strands and thereby generating the clamping force is the simplest.

When the rotation directions of the initial twister and the rotary twister are set to be opposite, as an alternative embodiment, the initial twister comprises a driving turntable which rotates along with the initial twister; the rotary twister includes a driving turntable to be driven to rotate by the driving turntable. In this embodiment, the driving turntable can drive the rotary twister to rotate continuously to perform twisting operation on the multi-strand wires, and only the driving turntable needs to be fastened on the rotary twister. In specific implementation, the driving turntable and the driving turntable are connected through a complete circle of transmission belt, the transmission belt is tightly wound on the driving turntable and the driving turntable at the same time, the transmission belt between the driving turntable and the driving turntable is also tightly wound on a pair of reversing turntables, so that when the driving turntable rotates along with the initial twister, the driving turntable is driven to rotate through the pair of reversing turntables and the transmission belt, so as to drive the rotating twister to rotate continuously, and the rotating direction of the rotating twister is opposite to the rotating direction of the initial twister.

Finally, the invention also provides a twisting machine, which uses the twisting device, and the twisting machine using the twisting device can conveniently integrate the doubling process and the twisting process, and only needs to be provided with a winding and conveying device for conveying the multiple strands to the twisting device and a collecting and winding device for drawing and collecting the twisted multiple strands from the twisting device.

In summary, the twisting device and the twisting machine provided by the invention can perfectly inherit the twisting principle of a mature two-for-one twisting machine and a mature ring spinning machine and combine the twisting machine and the ring spinning machine into a whole, and can conveniently integrate two processes required by the traditional two-for-one twisting machine and the ring spinning machine into one twisting machine to finish the two processes at one time, successfully utilize a single twisting machine to realize the production target of two separate processes of the traditional two-for-one twisting machine and the ring spinning machine in one step, save the field, and also save the consumption of power energy and the corresponding labor cost.

Drawings

FIG. 1 shows two processes of doubling and twisting for producing twisted multi-ply yarn by using a two-for-one twister, two processes of spinning and spooling for generating spun yarn by twisting roving by using a ring spinning frame, and twisting principles thereof; the figure has five subgraphs of (A), (B), (C), (D) and (E), and one horizontal dotted line and two vertical dotted lines in the figure are used for separating the subgraphs. The drawing shows the schematic diagram of two processes of doubling and twisting for producing twisted multi-strand yarn by using a two-for-one twister, the drawing shows the schematic diagram of two processes of spinning and spooling for generating spun yarn by twisting the roving by using a ring spinning frame, the drawing shows the schematic diagram of the twisting principle for realizing the two-for-one twisting effect of one-for-two twisting by using a spindle twisting device of the two-for-one twister, and the drawing shows the twisting principle for demonstrating the twisting and winding collecting effects of the spindle twisting device of the ring spinning frame and the twisting principle of one-for-one twisting of the twisting device of the ring spinning frame by using two multi-strand yarns. It is noted that in understanding the twisting principle of the (c), (d) and (e) diagrams, the rotation speed of the winding roller 12 can be imagined as zero, i.e. its action is simplified to correspond to a simple gripping action by fingers pinching the strands and a radial clamping action of the strands as described above.

Fig. 2 shows a cut-away view of a spindle twisting device of a two-for-one twister and a schematic view of the spindle twisting device for achieving one-turn two-twist effect, which is detailed in the background section above (fig. 2 left side view); the right part of the vertical dash-dotted line (hereinafter referred to as the right part of fig. 2) shows two technical solutions for clamping and twisting the multi-strand, which are actually two different embodiments from the initial twister in the twisting device shown in fig. 3, 5 and 6. Note that the right-hand side of FIG. 2 is oriented vertically for space-saving purposes, and the reader is directed to view the right-hand side of FIG. 2 horizontally with reference to the reference numerals of the right-hand side of FIG. 2. The upper and lower sides of a horizontal dotted line in the right drawing of fig. 2 are the parting lines of the two specific implementations. As shown in the figure below the horizontal chain line in the right side of FIG. 2, the initial twister 23 for clamping and twisting the strands by rotation comprises a hollow main shaft 2303, a friction drive wheel 2305 fitted around the main shaft 2303 and engaged with the belt 10, a twist turntable 2301 fitted around the main shaft 2303, and an initial twister support 2307, the strands fed to the initial twister are passed through the hollow portion of the main shaft 2303 and then output after being wound one turn on a rotary shaft 2309 extending across the middle portion of the twist turntable 2301, the rotary shaft 2309 is provided with a rolling bearing 2310 at the mounting portion of the twist turntable 2301 so that the rotary shaft 2309 does not substantially interfere with the running of the strands toward the take-up device, as described above, since the strands have an axial tension at the position where they are continuously pulled by the take-up device, and in the present invention, since the strands output from the initial twister to the rotary twister will be continuously wound around the winding yarn Therefore, an axial pulling force exists everywhere before the multi-strand is wound on the yarn winder, otherwise the multi-strand is not pulled and wound on the yarn winder. Due to the axial tension, the strands wound around the rotating shaft 2309 are tightened against the rotating shaft 2309 and produce a clamping effect on the strands, and the rotating shaft 2309 continues to rotate with the main shaft 2303 and the twisting turntable 2301 driven by the driving belt 10 as shown by the hollow arc arrow, so that the twisting of the strands is achieved by this embodiment of the initial twister. As shown in the upper diagram of the horizontal chain line in the right side of fig. 2, another embodiment of the initial twister also includes a hollow main shaft 2303, a friction driving wheel 2305 fastened to the hollow main shaft and a twisting turntable 2301 fastened to the rotary shaft 2303 and an initial twister support 2307, which is different from the embodiment shown below the horizontal chain line in that the purpose of simply clamping the multi-strand is achieved directly by a pair of elastic clamping rollers 2311, note that two chain lines except the middle one in the right side of fig. 2 indicate the rotating shaft axes of the main shaft 2303 and the twisting turntable 2301 thereon in the two embodiments of the initial twister, and that a pair of elastic clamping rollers 2311 is also provided with rolling bearings 2310 in the embodiment shown above the horizontal chain line in the right side of fig. 2, the multiple strands are not substantially prevented from being pulled by the collecting and winding device, and only the multiple strands in the initial twister are subjected to rotary twisting. As mentioned above, the multi-strand wires wound in front of the yarn winder have axial tension everywhere, so the initial twister can also completely adopt the method of bending the multi-strand wires as shown in the subsequent fig. 3, 5 and 6 to achieve the effect of clamping the multi-strand wires and twisting the multi-strand wires by combining rotation, and as for the direction of the rotation twisting, the direction of the rotation twisting can be changed by changing the traveling direction of the driving belt 10 in the right side diagram of fig. 2, so the invention can design and set different process parameters according to specific production process conditions so as to effectively twist the multi-strand wires. Furthermore, the multiple strands are illustrated with reference numeral 5 in the right-hand drawing of fig. 2.

Figure 3 shows a schematic view of the profile and cross section of an exemplary embodiment of a twisting device according to the present invention; fig. 4 is an enlarged schematic view of the portion of the differential transmission 22 in fig. 3. A vertical dashed line in fig. 3 separates the outline and cross-sectional views of the twister, and the lowest part of fig. 3 shows an optimized version of the roller of the yarn winder 20 with elastic material, taking advantage of the space occupied by the picture, and is advantageous for comparison with the above conventional embodiment. Note that fig. 3 and 5 actually illustrate all the components of the twister of a twisting apparatus and the bracket 1804 of the twister provided by the present invention. Fig. 4 shows the differential drive 22 in a cross-sectional representation in a greatly enlarged manner. The components of the core of the present invention, such as the rotary twister 19 and the yarn winder 20, have a background filling display effect in the reference numerals in the figure, and the reference numerals of some components included in the important components are also shown by semi-surrounding lines with leads if the positions are concentrated in one place. As can be seen from fig. 3 and fig. 5, in the present embodiment, the rotating axes of the winder 20 and the rotary twister 19 are coincident, so as to facilitate the transmission of the differential transmission device 22 and the passing of the multiple strands, the rotating axis of the winder 20 is the axis of the central shaft 21, and the rotating axis of the rotary twister 19 is the axis of the core assembly rotating shaft 18. As shown in figure 3 and with reference to figures 5 and 6, in this embodiment the support 1804 of the twisting means is horizontally U-shaped, the lower U-shaped arm of the support 1804 in fact supporting the initial twister of this embodiment, which is identified by reference numeral 24 in figure 6 with the parts exploded; the upper U-shaped arm of the bracket 1804 supports the rotary twister 19 and the winder 20. To reduce friction between the initial twister and the rotary twister 19 and the bracket 1804, the U-shaped upper and lower arms are supported by rolling bearings 1805. As shown in this figure and as can be seen from fig. 5 and 6, in the present embodiment, the initial twister and the rotary twister 19 are connected by a transmission belt 1812 with a circular cross section and synchronously and reversely rotate by a pair of reversing turntables 1811 hinged on the bracket 1804, but it is also possible to adopt a mechanism such as a gear train mechanism or a synchronous belt mechanism, or even adopt two sets of driving mechanisms to respectively drive the initial twister and the rotary twister 19. As shown in fig. 3 in conjunction with fig. 5 and 6, the initial twister includes a driving turntable 1809, the driving turntable 1809 has a driving turntable driving shaft 180902 at its center, which is fastened to the driving turntable driving shaft 1809 and inserted into the bracket 1804, and the driving friction wheel 1802 sleeved on the driving turntable driving shaft 180902 is driven by the driving belt 10 with reference number 10 to rotate continuously. The driving turntable 1809 and the driving turntable driving shaft 180902 are both hollow for the passing of multiple strands, the side surface of the multiple strand lead-in head 1813 tightly sleeved at one end of the driving turntable driving shaft 180902 is provided with a multiple strand lead-in hole 181302, and the multiple strands are bent from the multiple strand lead-in hole 181302, enter the driving turntable driving shaft, then pass through the center of the driving turntable 1809 and input into the rotary twister 19 above. As shown in FIG. 3 in conjunction with FIGS. 5 and 6, the rotary twister 19 includes a hollow driving turntable 1810 and a hollow driving turntable driving shaft 181002 located at the center thereof and fastened therewith, the driving turntable 1810 and the rotary drum 1901, the turntable 1904 and the turntable fixing bracket 1905 of the rotary twister 19 are fastened together in this embodiment, a hollow rotating shaft 18 is inserted and fastened in the center of the driving turntable 1810, the driving turntable driving shaft 181002, the turntable 1904 and the turntable fixing bracket 1905 and extends into the rotary drum 1901, in this embodiment, the edges of the driving turntable 1809 and the driving turntable 1810 and the pair of reversing turntables 1811 hinged on the bracket 1804 are concave semi-circles to just receive and limit the driving belt 1812 with a circular cross section, and for this embodiment, the initial twister is driven to rotate only by the driving belt with reference number 1812 and the turntable 1809, The driving turntable 1810 and the pair of reverse turners 1811 indirectly drive the rotary twister 19 to rotate continuously, and in turn drive the winder 20 to rotate together with the rotary twister 19 and the initial twister through a set of differential transmission devices 22 located inside the rotating drum 1901. Finally, note that the bracket 1804 and the magnetically attractive ring bracket, designated 210302, are not fully shown in this figure for space saving purposes, and both will be secured to a twisting machine that uses the twisting mechanism provided by the present invention.

Fig. 5 is a schematic diagram illustrating the effect of the exemplary embodiment of the present invention in twisting operation and outputting the multiple strands fed therein, on the basis of fig. 3, and in fact, this diagram is identical to the view of fig. 3, i.e. the diagram additionally illustrates the multiple strands fed in this embodiment in the specific production process, and it is suggested that this diagram is observed in comparison with fig. 3, and the black bold solid lines in this diagram refer to the multiple strands. Moreover, the figure also shows a series of complete production process flows from the doubling of single-strand yarn to the winding and collection of twisted multi-strand yarn on the basis of fig. 3, and actually shows the whole production process flow of the twisting machine using the twisting device provided by the invention, and it can be seen from the figure that the twisting machine using the twisting device provided by the invention can combine the two processes of the traditional two-for-one twister and the ring spinning frame into one process and complete the process on one single twisting machine in one step as described above, and only needs to be equipped with the single-strand yarn collecting ring 14 for doubling and the winding and conveying device represented by a pair of winding rollers 12 for inputting multi-strand yarn or roving shown at the lower part in the figure, and the collecting and winding device represented by the winding roller 12 for drawing and collecting the twisted multi-strand yarn shown at the upper part in the figure, and the matching devices such as the transverse yarn guiding device 13, and the like, can produce the twisted multi-strand yarn from a plurality of bobbins 1 directly in place in one step The bobbin 6 is a final product, or a spun yarn bobbin is produced directly from a roving bobbin in one go. The initial twister is driven to rotate continuously when a transmission belt 10 slides along the direction of the black solid line arrow against a friction transmission wheel 1802 of the initial twister, and then the rotary twister 19 is driven to rotate synchronously and reversely by the transmission belt 1812 and four rotating discs, and the winder 20 including the core part of the winder barrel 2001 and the rotary twister 19 rotate synchronously and continuously under the drive of a differential speed conventional device 22. In fig. 5, a hollow curved arrow at the upper arm of the U-shape of the support 1804 indicates the rotation direction of the rotary twister 19 and the winder 20, and arrows at the driving turntable 1809, the driving turntable 1810, the pair of reversing turntables 1811 and the driving belt 1812 indicate the respective rotation or traveling directions. The hollow curved arrow below the strand lead-in 1813 of the initial twister indicates the direction of rotation of said initial twister under the action of the belt 10. Note that the direction of rotation of the initial twister, the rotary twister and the package would all be reversed if the direction of travel of the belt 10 were changed.

Fig. 6 shows a schematic step-by-step disassembly of an exemplary embodiment of the present invention. The left side of the figure shows an effect diagram of the twisting device of the embodiment when the twisting device is split into several main core components, the further split effect diagram of each core component is shown as a diagram in a circle surrounded by dotted lines indicated by arc arrows in the figure, the upper right corner of the figure also shows technical features of the rotating shaft 18 and the yarn guide block 1801 fastened and inserted thereon in an enlarged manner in a perspective view, and the middle part at the lowest part of the figure shows some technical features of the middle shaft fixing part 2102 and the magnetic attraction ring 2103 matched with the middle shaft fixing part by using spacing magnetic force to fix the middle shaft 21 in an enlarged manner by using a blank area in the figure.

[ list of reference numerals ]

1. A single-strand bobbin; 2: a single strand; 3: parallel stranded wires; 3': roving; 4: parallel multi-strand bobbins; 4': a roving bobbin; 5: twisting the multiple strands; 5': spinning; 501: pre-twisting the multiple strands; 502: twisting the multiple strands; 6: twisting a plurality of bobbins; 6': spinning cone yarn; 7: a spindle; 701: a hollow ingot can; 8: twisting the disc; 801: bending; 802: a transverse channel; 803: a drive shaft; 9: a balloon; 10: a transmission belt; 11: a twisting disk support; 12: a winding roller; 13: a traverse yarn guide; 14: a wire collecting ring; 15: a bead ring; 16: a ring; 17: a quill; 18: a rotating shaft; 19: rotating the twister; 20: a yarn winder; 21: a middle shaft; 22: a differential transmission; 1801: a yarn guide block; 180101: a first channel; 180102: a second channel; 1802: a transmission friction wheel; 1803: driving a gear: 1804: a support; 1805: a rolling bearing; 1808: a hollow channel; 1809: a driving turntable; 180902: a driving turntable driving shaft; 1810: driving the turntable; 181002: a drive shaft for driving the turntable; 1811: a reversing turntable; 1812: a transmission belt; 1813: a strand lead-in head; 181302: a strand lead-in hole; 1901: a rotating drum; 1902: a hollow top cover; 1903: a yarn guide channel; 190301: a vertical channel; 190302: a transverse channel; 1904: a rotary table: 1905: a turntable fixing frame; 2001: a yarn winding drum; 2002: a top cover; 2003: a bottom cover; 200301: a driven gear; 2004: a roller; 200402: a roller bracket; 200403: an elastic band; 2102: a middle shaft fixing part; 210202: a porcelain ring; 2103: a magnetic attraction ring; 210302: a magnetic attraction ring holder; 2104: a magnet; 2105: a rolling bearing; 2106: a needle bearing; 2107: an axial milling structure; 2108: a yarn channel; 2201: a first drive gear; 2202 a second transmission gear; 2203: a gear mounting plate; 2204: a planar thrust bearing; 23: an initial twister; 2301: a twisting turntable; 2303: a main shaft; 2305: a friction drive wheel; 2307: an initial twister mount; 2309: a rotating shaft; 2310: a rolling bearing; 2311: clamping the roller; 24: an initial twister.

Detailed Description

The present invention will be described in detail below with reference to a specific exemplary embodiment in conjunction with the contents of the foregoing "background of the invention", "summary of the invention" and "brief description of the drawings".

Specifically, as shown in fig. 5 and referring to fig. 1, the exemplary embodiment of a twisting device provided by the present invention can perform twisting operation on the multi-strand fed therein and then output the twisted multi-strand as in other prior art solutions disclosed so far. As shown in fig. 3 and 5 and referring to fig. 6, the twisting device includes a twister for performing a twisting operation on the multiple strands and a bracket 1804 to which the twister is mounted. Compared with other disclosed technical solutions, as shown in fig. 3 and fig. 5 and fig. 6, the twisting device provided by the present invention is characterized in that the twister comprises an initial twister which can clamp the multiple strands fed into the twisting device and apply twisting to the multiple strands by continuous rotation, the initial twister in this embodiment is the assembly mounted on the lower U-shaped arm of the bracket 1804, the twister further comprises a rotary twister 19 which bends and rotates the strands to impart twist to the strands, in this embodiment as shown in figure 5 and described with reference to figures 3 and 6 the strands enter the rotary twister 19 and are first bent at the first passage 180101 of the yarn guide 1801 on the spindle 18, while in operation the initial twister and the rotary twister 19 are rotated synchronously by the drive belt 10. The twister further comprises a winder 20. The multi-strand output after being twisted by the initial twister as shown in fig. 5 first enters the rotary twister 19, and the multi-strand is wound on the yarn winder 20 after being twisted by the rotary twister 19. In the present invention, as shown in fig. 5, the winder 20 can be rotated continuously, and the rotating direction of the winder 20 is the same as that of the rotary twister 19 but the rotational angular velocities of the two are different so as to ensure that the winder 20 can pull the strands out of the rotary twister 19 and wind the strands on the winder 20 or that the rotary twister 19 can pull the strands out of itself and wind the strands on the winder 19. For the present embodiment as shown in fig. 4, when the angular velocity of the rotary twister 19 in the clockwise dimension indicated by the arc-shaped arrow in fig. 4 is slightly smaller than the angular velocity of the winder 20 rotating in the same direction therewith, the winder 20 pulls the strands out of the rotary twister 19 and winds them on itself; the strands can also be wound onto the winder 20 if the rotational angular velocity of the winder 20 is smaller than the same rotational angular velocity of the rotary twister 19, in which case the strands will be actively wound onto the winder 20 by the rotary twister 19. In the specific operation of this embodiment, the initial fastening friction force required for winding the multi-strand yarn onto the yarn winder 20 can be obtained by winding the multi-strand yarn onto the yarn winder 20 for a plurality of turns at the production initialization stage of the twisting device and the twisting machine so that the multi-strand yarn is tightly attached to the yarn winder 20 without slipping easily. In the present invention, the strands wound around the yarn winder 20 as shown in fig. 5 are unwound from the yarn winder 20 and folded back to the rotary twister 19, and the strands folded back to the rotary twister 19 are rotated together with the rotary twister 20 and are output after being bent at least once. The yarn winding position of the yarn winder 20 of the present embodiment shown in fig. 5 and 3 has a slope to facilitate the automatic upward arrangement of the multi-strand loops for subsequent unwinding, and of course, the multi-strand loops can be surely unwound from the yarn winder 20 even if they are stacked and formed into multiple layers as long as the subsequent tension is sufficiently large. As shown in fig. 5 and combined with fig. 3 and 6, it can be seen that the multi-strand yarn folded back to the rotary twister 19 in this embodiment is bent at the second passage 180102 of the yarn guide block 1801 in the rotating shaft 18 and then drawn around the rotating disc 1904 of the rotary twister 19 and output to the winding device represented by the upper pair of winding rollers 12 in fig. 4, and then regularly wound on the final finished twisted multi-strand bobbin 6 in cooperation with the traverse yarn guide device 13. In fact, the twisting of the multi-strand yarn according to the present invention can be divided into two stages, the first stage is that the multi-strand yarn is wound on the yarn winding device 20 after the initial twisting device and the two twisting operations of the rotary twisting device 19 are performed on the multi-strand yarn, in this stage, the yarn winding device 20 is equivalent to the cop 17 in the ring spinning frame described in the section of the aforementioned background art and fig. 1; the second stage is that the multi-strand yarn is unwound from the yarn winder 20 and is folded back and returned to the rotary twister 19, and then is output with the rotary twister 19 in a rotating way, in this stage, the yarn winder 20 and the multi-strand yarn wound thereon are equivalent to the parallel multi-strand bobbin 4 in the spindle twisting device of the two-for-one twister shown in the left side diagram of fig. 2. In fact, the multiple strands are subjected to a twisting process of "one-for-two twisting" in the second stage of the two-for-one twister described in the background section and in the left side of fig. 1 and 2. Furthermore, the initial twister can be used to bend the multi-strand wire under axial tension as mentioned in the background section above, and then clamp the multi-strand wire at the bend, or can be used to directly clamp the multi-strand wire by using a pair of rubber rollers tightly attached together as shown in the upper part of the right side of fig. 2, or can be used in a winding clamping manner as shown in the lower part of the right side of fig. 2, or even in other clamping manners.

As shown in fig. 3 and 5 and with reference to fig. 1 and 2 in combination with the above description, it can be seen that in the present invention, the rotary twister 19 actually performs a twisting operation of one-turn single-twist on the fed multi-strand according to the twisting principle of the ring spinning frame, because the rotary twister 19 bends and rotates the fed multi-strand as in the ring spinning frame as shown in fig. 4, and because the axial tension exists at multiple places due to the difference in rotation speed between the rotary twister 19 and the subsequent winder 20 and the operation of tensioning the multi-strand when the winding operation is initiated in combination with the twister, the bending of the multi-strand in the rotary twister 19 generates a clamping effect on the bending of the multi-strand, and as the rotary twister 19 continuously rotates as if the multi-strand is continuously pinched by hand, as shown in fig. 5 and referring to (t) and (t) diagrams of fig. 1, the rotary twister 19 twists one end of the strands starting from the strand clamp of the initial twister, and the strand fed to the strand clamp of the initial twister from the winding and feeding device represented by the pair of winding rollers 12 below fig. 5 is rotated by the initial twister, and the direction of rotation of the initial twister and the rotary twister can be set to be the same direction or opposite direction according to the characteristic requirements of the final fabric, and in this embodiment, the direction of rotation is opposite as shown in fig. 3, 5 and 6. In this embodiment, the multi-strand clamping position of the initial twister is the bending position of the multi-strand introducing hole 181302 of the multi-strand introducing head 1813 as shown in fig. 5, but two other clamping methods or other methods shown in the right side view of fig. 2 may be used as described above. In the embodiment shown in fig. 5, the bending point of the multi-strand yarn at the rotary twister 19 is the first channel 180101 of the yarn guide block 1801 on the rotating shaft 18 indicated by 180101. After the rotational twisting of one turn of a single twist by the rotary twister 19 as shown in fig. 5, the multi-strand can be pulled out of the rotary twister 19 and wound on the winder 20 due to the difference in rotational angular velocity between the winder 20 and the rotary twister 19 as described above. The winder 20, which winds multiple strands at the same time as shown in fig. 5, actually corresponds to a bobbin, i.e. to the parallel multiple bobbins 4 located inside the hollow spindle 701 in the left side view of fig. 2. In the present invention, as shown in fig. 5, the twisted yarn is wound around the yarn winder 20, unwound from the yarn winder 20, folded back to the rotary twister 19, and rotated together with the same and then output. In the present embodiment, as shown in fig. 5 and referring to fig. 3 and 6, the multi-strand unwound from the yarn winder 20 first reaches up to the upper end of a central shaft 21 shown in fig. 5, then bends from the upper end of the central shaft 21 and returns to the rotating shaft 18 included in the rotary twister 19 through the yarn passage 2108 which is hollow inside, then bends again in the second passage 180102 of the yarn guide block 1801 on the rotating shaft 18 and outputs to the rotating shaft 18 and the outside of the rotary twister 19, and then is pulled out of the twisting device by the collecting and winding device represented by a pair of winding rollers 12 and finally wound into the final product represented by a twisted multi-strand bobbin 6. Comparing fig. 5 with the left side diagrams of fig. 1 and 2, it can be seen that the rotary twister 19 actually performs the twisting effect of one-to-two twisting as a two-for-one twister, and the strands output from the rotary twister 19 also form a balloon as shown by reference numeral 9 in the left side diagram of fig. 2 along with the rotation of the rotary twister 19, and the strands constantly maintain the power for unwinding from the winder 20 and axial tension at the folds as shown by reference numeral 180102 due to the continuous traction of the collecting and winding device represented by the pair of winding rollers 12 shown in fig. 4. As shown in fig. 5 and referring to the left side of fig. 2, the yarn winder 20 in this embodiment is actually equivalent to the parallel multi-strand bobbins 4 placed in the hollow spindle tank 701 in fig. 2, the bending position of the second passage 180102 in this embodiment in fig. 4 is equivalent to the bending position 801 in fig. 2, the turntable 1904 in this embodiment in fig. 4, which is fastened to the rotating shaft 18, is equivalent to the twisting disk 8 in fig. 2, and the strand output from the bottom of the turntable 1904 in this embodiment to the line concentration ring 14 in fig. 4 continuously rotates along with the rotating shaft 18 and the turntable 1904 fastened thereto and the turntable holder 1905 and the driving turntable 1810 for assisting in fixing the turntable 1904, thereby forming an air ring which can apply twist back to the multi-strand like the air ring 9 shown in the left side of fig. 2. Compared with a two-for-one twister and a ring spinning frame, the twisting device and the twisting machine provided by the invention can finish doubling, twisting, collecting and winding to obtain final cost bobbin yarn in one step, namely, doubling yarn from a single-strand bobbin 1 is realized by one device in one process, and then twisting is carried out to obtain final product twisting multi-strand bobbin yarn. And the spinning and winding processes of the ring spinning frame can be completely realized in one step, and the final finished product cone yarn can be directly produced from the roving.

In order to accurately control the difference between the rotating speed of the rotary twister and the rotating speed of the yarn winder and avoid using a high-price servo motor or a stepping motor, the present invention preferably adopts a differential transmission device 22 between the rotary twister 19 and the yarn winder 20 to enable the two to rotate together in the same direction and ensure that there is a differential speed in angular velocity between the two, and the embodiment shown in fig. 3, 4 and 5 adopts the differential transmission device 22 which realizes variable speed transmission by two pairs of gear transmissions. The present invention relates to a differential transmission device, which is a very mature practical technology in the field of mechanical profession, and can achieve a corresponding transmission ratio by changing the gear ratio of two meshed gear wheels. Of course, other types of differential transmission than the differential transmission 22 featuring two pairs of meshing gears shown in fig. 3, 4 and 5 are also possible and can be applied in the present invention, after all, various types of differential transmission have already been developed for various industries. As shown in fig. 3 and 5 and referring to fig. 6, the yarn winding device 20 of the present embodiment is located outside the rotary twister 19, the strands twisted by the rotary twister 19 are wound on the yarn winding device 20 from the outside of the yarn winding portion of the yarn winding device 20, the differential transmission device 22 is located inside the rotary twister, in the present embodiment, the strands bent and outputted from the first channel 180101 of the yarn guide block 1801 of the rotating shaft 18 as shown in fig. 5 and 3 enter one yarn guide channel 1903 of the drum wall 1901 of the rotary twister 19, and the strands outputted from the yarn guide channel 1903 of the drum 1901 of the rotary twister 19 are wound on the core component yarn winding drum 2001 of the yarn winding device 20 located outside the rotary twister 19. The embodiment shown in fig. 5, 3 and 6, in which the rotary twister 19 and the yarn winder 20 are implemented as separate components, is advantageous for the convenience of manufacturing and maintenance when implementing the present invention, and it is also a straightforward and easy-to-implement practice to wind the strands from the rotary twister 19 onto the yarn winder 20 from the outside of the yarn winder 20. Considering that the differential transmission device 22 needs to avoid the adverse effect of dust, moisture and the like on the precise variable-speed transmission as much as possible, the differential transmission device 22 should be equipped with the isolation and protection measures of dust, water and the like, so that it is a good choice to dispose the differential transmission device 22 inside the rotary twister 19 and the yarn winder 40 in the embodiment shown in fig. 3 to 6, firstly, the differential transmission device 22 will be tightly attached to both to conveniently realize the variable-speed transmission, and secondly, both will be used as a natural protective barrier to isolate the differential transmission device from the external dust, moisture and the like. Referring to fig. 5, fig. 3 and fig. 4, a differential gear 22 is preferably placed inside the rotary twister 19, since the size of the rotary twister 19 tends to be larger than the winder 20, since the multi-strand is preferably wound thereon from the outside of the winder 20. Of course, the differential drive can also be located completely inside the winder or even outside both.

In the practice of the present invention, as shown in fig. 3-6, the rotary twister 19 in this embodiment will include a hollow shaft 18 mounted on a bracket 1804 and driven to rotate freely, in this embodiment, the shaft 18 is fixedly inserted into the driving turret 1810 and the driving turret drive shaft 181002 and is inserted into the bracket 1804 by the driving turret drive shaft 181002, the rotating shaft 18 is actually a core part of the rotary twister 19, and as shown in fig. 3 to 6, the rotary twister 19 further includes a hollow drum 1901 fastened to the rotating shaft 18, as shown in fig. 5 and compared with fig. 3, the twisted strands fed into the rotary twister 19 pass through the hollow interior of the rotating shaft 18 and then bend to pass through the rotating shaft 18 and then enter the yarn guide channel 1903 on the wall of the drum 1901; the multiple strands are wound on the yarn winder 20 after passing through the yarn guide channel 1903. In this embodiment, the yarn guiding channel 1903 is composed of a transverse channel 190302 and a vertical channel 190301 located at the bottom of the rotating drum 1901 as shown in fig. 3 to fig. 5, in this embodiment, the yarn guiding channel 1903 is formed by drilling holes on the bottom and the wall of the rotating drum 1901, but may also be formed by welding a bent pipe to the rotating drum 1901, or may be implemented in other manners. As mentioned above, the multi-strand fed to the rotating shaft 18 is bent once and simultaneously the rotating shaft 18 is rotated, so that the twisting effect of one-to-one twisting of the multi-strand can be achieved as a ring spinning frame, as shown in fig. 3 to 5, in this embodiment, the bending of the multi-strand in the rotating shaft 18 is achieved through the first passage 180101 and the second passage 180102 of a yarn guide block 1801 fastened on the shaft body of the rotating shaft 18, the differential transmission device 22 can be accommodated in the hollow rotating drum 1901 as shown in fig. 3, 4 and 5, and the multi-strand is conveniently wound on the yarn winder 20 from the outside of the subsequent yarn winder 20 after entering the cylindrical wall of the drum 1901 with enlarged size from the rotating shaft 18. As shown in fig. 3 to 6, the yarn winder 20 includes a hollow central shaft 21 located on the rotation axis thereof, and a yarn winding drum 2001 freely rotatable around the central shaft 21, the yarn winding drum 2001 is actually the core component of the yarn winder 20, and the multiple strands coming out from the yarn guide channel 1903 of the drum 1901 are wound on the yarn winding drum 2001; in order to achieve the twisting effect of one-turn-two-twist of the aforementioned two-for-one twister, in this embodiment, the hollow central shaft 21 has a hollow inner channel which is axially through and through which multiple strands can pass, that is, the yarn channel 2108 shown in fig. 3 and 5, after the multiple strands wound on the winding drum 2001 are unwound, as shown in fig. 4, the multiple strands enter the hollow inner channel of the central shaft 21 and are folded back to the rotary twister 19 through the hollow inner channel, the multiple strands folded back to the rotary twister 19 enter the hollow inner part of the rotating shaft 18 and are output after at least one bending occurs, and in this embodiment, the multiple strands folded back to the rotary twister 19 are output after being bent through the second channel 180102 of the yarn guide block 1801. In the present embodiment, the second passage 180102 is connected to a radial passage in the turntable mount 1905 below the turntable 1904 as shown in fig. 3 to 5, and the multiple strands are bent in the second passage 180102, and then travel along the lower part of the turntable 1904 through the radial passage and then bypass the turntable 1904 to be drawn to the collecting and winding device represented by a pair of winding rollers 12 at the upper part in fig. 4, during which the multiple strands also generally pass through a thread collecting ring 14, also referred to as a "thread guide", as shown in fig. 4. In this embodiment, the turntable 1904, the turntable fixing frame 1905, the driving turntable 1810 and the driving turntable driving shaft 181002 are all fastened to the rotating shaft 18, so that the rotating shaft 18 is driven to rotate continuously as the driving turntable 1810 is driven by the driving belt 1812. Note that since the rotary twister 19 is continuously rotated during operation, the present invention also applies a one-to-two twisting effect as in the aforementioned two-for-one twister to the strands unwound from the winder 20 and folded back to the rotary twister 19, and comparing fig. 5 with the left side of fig. 2, the winder 20 in the present invention actually corresponds to the parallel multi-strand bobbins 4 in the hollow spindle 701 of the two-for-one twister, the hollow inner channel of the central shaft 21 corresponds to the hollow inner channel of the spindle in the two-for-one twister shown in the left side of fig. 2, and the rotating shaft 18 and the rotating disc 1904 fixed thereto correspond to the twisting disc 8 in the spindle twisting device of the two-for-one twister shown in the left side of fig. 2. In practical implementation, since the strands output from the rotating shaft 18 are all pulled and collected by the collecting and winding device, as shown in fig. 5, by the pair of winding rollers 12 shown in the upper part of the drawing, the strands unwound from the yarn winder 20 are all pulled by the collecting and winding device to generate an axial pulling force everywhere, so that the strands are subjected to a radial clamping force at the bending part of the second channel 180102 of the yarn guide block 1801 when being bent and output from the rotating shaft 18 to the collecting and winding device, and in this embodiment, the strands are continuously rotated along with the rotation of the rotating shaft 18 while being clamped at the bending part of the second channel 180102 of the yarn guide block 1801 shown in fig. 5 and 4, so that the twisting effect of one-turn and two-turn of the two-for-twist machine shown in fig. 2 and 1 is achieved.

As a preferred embodiment, as shown in fig. 3 to fig. 6, in this embodiment, a hollow passage 1808 penetrating the entire rotating shaft axially is formed in the rotating axis direction of the hollow rotating shaft 18, and the stranded wires fed to the rotary twister 19 first pass through the hollow passage 1808; a yarn guide block 1801 is fixedly inserted on the shaft body of the rotating shaft 18, two channels for multiple strands to pass through are arranged in the yarn guide block 1801, as shown in fig. 3, 4 and 5, an opening at one end of a first channel 180101 is butted with the hollow channel 1808 of the rotating shaft 18, the multiple strands fed into the twisting device are bent and then output from an opening at the other end of the first channel 180101 to the outside of the rotating shaft 18 to enter the yarn guide channel 1903 of the rotating drum 1901, in this embodiment, the multiple strands output from the rotating shaft 18 as shown in fig. 3 to 6 firstly enter a transverse channel 190302 drilled at the bottom of the rotating drum 1901, then are bent upwards to enter a vertical channel 190301 drilled in the yarn guide channel 1903 on the cylindrical wall of the rotating drum 1901, and finally leave the rotating drum 1901 and the rotating twister 19 from an opening at the uppermost end of the vertical channel 190301. In addition, in this embodiment, as shown in fig. 3 and 4, the middle shaft 21 is also processed to form a yarn passage 2108 axially penetrating the whole middle shaft, an end of the yarn passage 2108 is opened opposite to an end of the hollow passage 1808 of the rotating shaft 18, and the strands unwound from the bobbin 2001 are folded back into the hollow passage 1808 of the rotating shaft 18 through the yarn passage 2108. As shown in fig. 3 to 6, an opening of one end of a second channel 180102 of the two channels for multiple strands of the yarn guide block 1801 is butted against the hollow channel 1808 of the rotating shaft 18 so as to allow the multiple strands folded back to the rotating shaft 18 to penetrate into the second channel 180102, and as shown in fig. 5, the multiple strands penetrating into the second channel 180102 are bent at least once therein and then output from the opening of the other end of the second channel 180102 to the outside of the rotating shaft 18 so as to output from the twisting device. Note that, in this embodiment, as shown in fig. 3 to 6, the detachable yarn guide block 1801 is used to implement two times of bending of the multiple strands, which is based on the consideration that two bending channels for processing the multiple strands and a multiple strand passing channel for processing the spindle 18 at one time, that is, the hollow channel 1808, are used, and of course, such exemplary embodiment as shown in fig. 3 to 6 is only a preferred embodiment of the present invention, and other ideas and technical solutions, such as using a bent pipe inserted with two bends into the spindle 18 to pass through the multiple strands, are also feasible and are also based on the basic idea of the technical solution of the present invention.

On the basis of the foregoing preferred implementation, as a preferred embodiment of the differential transmission device, in the present invention, as shown in fig. 3 to 6, a middle shaft fixing member 2102 which does not rotate with the winding bobbin 2001 by using separated magnetic force is tightly installed on the position of the middle shaft 21 outside the winding bobbin 2001, in this embodiment, the middle shaft fixing member 2102 is a cone with magnets 2104 fastened on four sides, the cone-shaped middle shaft fixing member 2102 may be made of a non-magnetic material such as an aluminum magnesium alloy, as shown in fig. 3 to 6, a hollow magnetic attraction ring 2103 is matched with the middle shaft fixing member 2102, and the magnets 2104 attracted to the corresponding magnets on the middle shaft fixing member 2102 are tightly fastened and embedded on the inner annular wall of the magnetic attraction ring 2103. As mentioned above and referring to fig. 5, since the rotary twister 19 of the twisting apparatus provided by the present invention continuously rotates during operation, the strands output from the rotary twister 19 continuously rotate, so that a balloon as shown by balloon 9 in the left side of fig. 2 is formed, in this embodiment, the strands output from the core component rotating shaft 18 of the rotary twister 19 to the winding roller 12 of the winding apparatus pass around the edge of the turntable 1904 and then are folded upward, and then pass through a whole circle gap between the central shaft fixing member 2102 and the magnetic attraction ring 2013 to pass through a thread collecting ring 14 to a pair of winding rollers 12 constituting the collecting and winding apparatus, it is obvious that as the rotating disc 1904 fastened to the rotating shaft 18 rotates synchronously with the rotating shaft 18, the segment of the multi-strand wire between the rotating disc 1904 and the wire-collecting ring 14 will rotate continuously around the axis of the rotating shaft 18 and the central shaft 21 to form an air ring. It can also be seen from fig. 5 that if the central shaft fixing member 2102 does not use the air-separating magnetic force to fix the central shaft 21, the air ring cannot be formed, and the rotary twister 19 of the twisting apparatus provided by the present invention cannot achieve the effect of one-turn and two-turn as in a two-for-one twister. Note that fig. 3 and 4 do not show the complete magnetically attractive ring support 210302 and the support 1804 of the twisting device, and in reality, these two components are fastened to the frame of the twisting machine using the twisting device provided by the present invention, so as to save space in the drawings of the specification and to fully exhibit the technical features reflecting the core content of the present invention, the redundant parts of the magnetically attractive ring support 210302 and the support 1804 are removed by the double wavy dotted line and the display of the whole twisting machine using the twisting device provided by the present invention is omitted. In addition, in this embodiment, as shown in fig. 3, 5 and 6, in order to reduce the resistance of the multi-strand bent yarn unwound from the yarn winder 20 penetrating into the hollow conical central shaft fixing member 2102, in this embodiment, a ceramic ring 210202 with a smooth inner wall is embedded at the upper end opening of the central shaft fixing member 2102; in order to reduce the friction between the bobbin 2001 which is continuously rotated and the center shaft 21 and the friction between the bobbin 2001 and the hollow top cover 1902 of the drum 1901, in the present embodiment, as shown in fig. 3, 4 and 5, rolling bearings 2105 are provided at both the top cover 2002 and the bottom cover 2003 of the bobbin 2001 which close the openings at the upper and lower ends of the bobbin 2001 to prevent the entry of dust, dust and fine yarn. As shown in fig. 5 and referring to fig. 3 and 6, the initial twister 24 of the present embodiment mounted on the twisting machine, having a friction drive wheel 1802 secured thereto thereunder, will provide a drive belt 10 which is closely fitted to the friction drive wheel 1802 and continuously travels in one direction, so that the friction drive wheel 1802 and therefore the whole initial twister 24 will also rotate continuously, as shown in fig. 4, under the reverse driving of a complete turn of the belt, designated by the reference numeral 1812, and of a pair of reversing disks 1811 hinged on the support 1804, the rotary twister 19 will also rotate synchronously with the initial twister 24, in the present embodiment, the rotation directions of the two are just opposite, but it is needless to say that the initial twister 24 and the rotary twister 19 can be driven by two sets of driving devices independently and the rotation directions can be set to be the same according to the requirements of the product characteristics. The multiple solid bold arrows in fig. 5 indicate the direction of travel or rotation of the circular cross-section drive belt 1812, drive turntable 1810, motive turntable 1809 and pair of reversing turntables 1811, respectively, associated with the linkage of the initial twister with the rotary twister 19, and the two hollow arcuate arrows in fig. 5 indicate the direction of rotation of the initial twister and the rotary twister 19, respectively. In this embodiment, in order to realize the differential transmission device, as shown in fig. 3 to 6, a driving gear 1803 capable of driving the differential transmission device 22 is fastened to a portion of the upper end of the rotating shaft 18 extending into the drum 1901, and the driving gear 1803 is coaxial with the rotating shaft 18 and rotates together with the rotating shaft 18; in this embodiment, the differential drive 22 is located inside the assembly drum 1901 of the rotary twister 19 as shown in FIGS. 3-6, the differential transmission 22 includes a first transmission gear 2201 engaged with a drive gear 1803 extending into the drum 1901, the differential transmission 22 further includes a second transmission gear 2202 coaxially fastened to the first transmission gear 2201 as shown in fig. 3 to 6, the differential gear 22 further includes a gear mounting plate 2203 for mounting the first and second transmission gears 2201 and 2202, the gear mounting plate 2203 is fastened to the central shaft 21 in this embodiment so as not to rotate with the rotary twister 19 and the winder 20, in this embodiment, the gear mounting plate 2203 is sleeved on the middle shaft 21 by its hollow portion as shown in fig. 3 to 6; as shown in fig. 6 and referring to fig. 3 to 5, in this embodiment, the central axle 21 has an axial flat-milled structure 2107 thereon, and the axial flat-milled structure 2107 can be used as a spline-like structure to fasten the gear mounting plate 2203 sleeved thereon so that it cannot rotate, only the gear mounting plate 2203 is sleeved in the hollow portion of the central axle 21 and has a structure corresponding to the axial flat-milled structure 2107, which is not further described in the prior art of machinery. As shown in fig. 3 to 6, in the present embodiment, the yarn winder 20 further includes a driven gear 200301 fastened to the yarn winding drum 2001, the driven gear 200301 is fastened to a bottom cover 2003 of the yarn winding drum 2001 in the present embodiment, the bottom cover 2003 of the yarn winding drum 2001 is fastened to the yarn winding drum 2001 in the present embodiment, a rotation axis of the driven gear 200301 coincides with a rotation axis of the yarn winder 20, and the driven gear 200301 is engaged with the second transmission gear 2202. In this way, as shown in fig. 3 to fig. 6, the differential transmission device 22 drives the core component of the yarn winder 20 to rotate in the same direction around the yarn winding drum 2001 by the driving gear 1803, the first and second transmission gears, and the driven gear 200301 fastened with the yarn winding drum 2001 through the rotation of the rotating shaft 18, and for this embodiment, it is only necessary to adjust the gear ratios of the driving gear 1803, the first and second transmission gears, and the driven gear 200301 to realize different transmission ratios, that is, to realize that the differential speed between the rotating speeds of the rotary twister 19 and the yarn winder 20 rotating in the same direction and the rotating angular speed of either one of them is slightly faster. As shown in fig. 3 to 6, in this embodiment, in order to improve the transmission efficiency of the differential transmission device 22 as much as possible, a flat thrust bearing 2204 is further disposed between the second transmission gear 2202 and the gear mounting plate 2203, and a needle bearing 2106 for reducing friction between the middle shaft 21 of the driving gear 2203 extending into the end of the rotating shaft 18 and the driving gear 2203 is disposed therebetween. The differential transmission 22 of the present embodiment shown in fig. 3 to 6 also uses three sets of transmission gears uniformly distributed around the rotation axis of the rotary twister 19 and the winder 20, and such uniform arrangement is favorable for the stability of transmission. The hollow top cover 1902 provided to the drum 1901 in this embodiment is primarily intended to protect the entire set of differential drives 22 within the drum 1901 from dust, moisture and fine air-suspended yarn in the workshop. Referring to fig. 3, 5 and 6, in this embodiment, the central shaft 21 is fixed by the central shaft fixing member 2102 so as not to rotate with the bobbin 2001 because in this embodiment, two transmission gear positions of the differential transmission 22 are fixed indirectly by the central shaft 21 through the gear mounting plate 2203, and the central shaft fixing member 2102 using the air-separating magnetic force is as described above and as shown in the left side of fig. 2, because the conventional fixing mechanism tends to interfere with the multi-strand output from the twisting device of the similar two-for-one twister, because the multi-strand output from the twisting device of the similar two-for-one twister rotates around the twisting device as shown in the balloon 9 of the left side of fig. 2, the air-separating magnetic force is used to attract and fix the central shaft 21, so that a space for the multi-strand to rotate continuously and circularly without obstacle can be created around the central shaft 21, this space is, for the purposes of this embodiment, the full turn of the gap between the magnetically attractive ring 2103 and the central shaft anchor 2102 as shown in figures 3 and 5. Of course, there are also possible implementations of the differential gear 22.

In the practice of the present invention, it is preferred that the initial twister and the rotary twister 19 are rotated simultaneously by a mechanical linkage, such as a gear mechanism or a timing belt, or a one-turn belt 1812 stretched tightly over all the turntables by using two sets of turntables and a pair of reverse turntables 1811 as shown in fig. 3 to 6. Preferably, the direction of rotation of the initial twister, which grips the strands fed to the twisting device and applies twisting to the strands by continuous rotation, is opposite to the direction of rotation of the rotary twister 19, as in the present embodiment shown in fig. 3 to 6, so that the twisting effect of the strands between the initial twister 24 and the rotary twister 19 can be increased. Of course, the user of the twisting apparatus provided by the present invention can also set the rotation direction of the initial twister 24 to be consistent with the rotation direction of the rotary twister 19 according to the performance specification of a specific product, even if two separate sets of driving mechanisms are used to drive the initial twister and the rotary twister respectively so as to precisely control the rotation direction and the rotation speed of the two. In addition, when the initial twister is implemented, it is also preferable to achieve the effect of clamping the stranded wires by bending the stranded wires, as in the embodiment shown in fig. 3 to 6. When the rotation directions of the initial twister and the rotary twister 19 are set to be opposite, as an alternative embodiment, the initial twister will include a motive rotary plate 1809 rotating together with the initial twister as shown in fig. 3 to 6, and in this embodiment, the motive rotary plate 1809 is fastened with other parts of the initial twister as shown in fig. 3 to 6; the rotary twister 19 includes a driving turntable 1810, the driving turntable 1810 is driven by the driving turntable 1809 to rotate, as shown in fig. 3 to 6, the driving turntable 1810 is fastened to the drum 1901, the rotating shaft 18, the turntable 1904, and the turntable fixing frame 1905 of the rotary twister 19, so that if the driving turntable 1810 is driven to rotate, the rotary twister will rotate continuously as shown in fig. 5, so that in this embodiment, as shown in fig. 3 to 6, the driving turntable 1810 can drive the rotary twister 19 to rotate continuously to perform twisting operation on the multi-strand wires. In practical implementation, as shown in fig. 3 to 6, the driving turntable 1809 and the driving turntable 1810 are connected by a complete circle of the transmission belt 1812, the transmission belt 1812 is tightly wound on both the driving turntable 1809 and the driving turntable 1810, and the transmission belt 1812 between the driving turntable 1809 and the driving turntable 1810 is also tightly wound on a pair of reversing turntables 1811, so that when the driving turntable 1809 rotates with the initial twister, the driving turntable 1810 is driven to rotate by a pair of the reversing turntables 1811 and the transmission belt 1812, so as to drive the rotary twister 19 to rotate continuously, and the rotation direction of the rotary twister 19 and the rotation direction of the initial twister will be opposite.

Finally, the invention also provides a twisting machine, the twisting machine using the twisting device can conveniently integrate the doubling process and the twisting process of the traditional two-for-one twisting machine together, and can also completely integrate the spinning process and the winding process of the transmission ring spinning frame into a single twisting machine for further completion. As shown in fig. 5, it is only necessary to provide a winding and conveying device for conveying the multiple strands to the twisting device and a collecting and winding device for collecting the twisted multiple strands by pulling them from the twisting device. In the embodiment shown in fig. 5, both winding devices are realized by a pair of winding rollers 12, but this is only one way of realizing that the winding devices can be completely different from the pair of winding rollers, for example, the above mentioned tightening the twisted multi-strand bobbin 6 directly on a roller can also realize the effect of pulling the multi-strand out of the twisting device and winding the multi-strand into the twisted multi-strand bobbin 6 with regular shape by cooperating with the traverse yarn guiding device 13 shown in fig. 1 and 4, which is various but not sufficient.

In practice, when the twisting machine equipped with this embodiment is used, as shown in fig. 5 and referring to fig. 3, a pair of winding rollers 12 for feeding a plurality of strands to the winding device of the twisting device is first unwound, a plurality of strands combined from two single-strand bobbins 1 is tied with one end of an elastic steel wire, the other end of the elastic steel wire is bent from below the initial twister through a plurality of strand introduction holes 181302 to extend into the initial twister 24 and up to the rotary twister 19, and then passes through the hollow passage 1808 of the rotating shaft 18, the first passage 180101 of the yarn guide block 1801, the transverse passage 190302 at the bottom of the drum 1901, and the vertical passage 190301 on the wall of the drum 1901 in sequence as shown in fig. 5, and then the whole elastic steel wire is completely drawn out from the vertical passage 190301 of the drum 1901 and a long length of the plurality of strands is drawn out; then, the strands pulled out of the drum 1901 are manually twisted by both hands in a certain degree in the rotating twisting direction of the rotary twister 19 when the twister is operated, and then the long strands are manually wound onto the winding drum 2001 tightly in the winding direction of the yarn on the winding drum 2001 when the twister is operated, and a certain tension is applied to the strands between the winding drum 2001 and the drum 1901, and the multiple strands wound on the winding drum 2001 can be stacked to a certain degree so that the strands are easily scattered and can be pulled and unwound from the winding drum 2001 by the collecting and winding device with a certain pulling tension, so that the pair of winding rollers 12 for feeding the strands to the twisting device can clamp the strands with a sufficient holding force in order to generate the tension of the strands between the winding drum 2001 and the drum 1901. The elastic steel wire is then used to guide the long strand of multi-strand wires which are not wound on the winding bobbin 2001 to pass through the gap between the magnetic attraction ring 2103 and the middle shaft fastener 2103, penetrate into the porcelain ring 210202 at the upper end of the middle shaft fastener 2103, enter the yarn channel 2108 of the middle shaft 21, then pass through the second channel 180102 of the yarn guide block 1801 of the lower rotating shaft 18, and pass out of the radial channel of the turntable fixing rack 1905 below the turntable 1904, finally pass through the gap between the magnetic attraction ring 2103 and the middle shaft fastener 2103 again, and manually pass through the line collecting ring 14 shown in fig. 4 and the pair of winding rollers 12 for collecting the twisted multi-strand wires to firmly wind the multi-strand wires on the twisting multi-strand bobbin 6. When the initial operation of the twisting machine is completed, the twisting machine can be started, the driving belt 10 starts to continuously advance to drive the initial twister to rotate after the twisting machine is started, the rotating twister 19 is driven to synchronously and continuously rotate through the driving belt 1812 with the circular cross section and the reference number 1812 and the plurality of rotating discs, the differential transmission device 22 in the rotating drum 1901 drives the yarn winder to synchronously rotate along with the rotating twister 19, and thus the whole twisting device starts to perform continuous rotating twisting operation on the multi-strand yarns. Considering that, if the single-strand wires are very easy to unwind from the single-strand bobbin 1, the multi-strand wires combined by a plurality of single-strand wires at the gathering ring 14 shown at the lower part in fig. 5 may not form an effective tightening effect at the bending point of the multi-strand inlet hole 181302 of the initial twister and at the bending point of the first channel 180101 of the yarn guide block 1801 of the rotary shaft 18, and thus generate the radial clamping force necessary for the rotary twisting, the pair of winding rollers 12 shown at the lower part in fig. 4 for feeding the multi-strand wires to the rotary shaft 18 need to adjust the clamping force to the multi-strand wires not only so as not to hinder the multi-strand winding caused by the differential speed between the yarn winder 20 and the rotary twister 19, but also to retain a slight clamping force suitable for the multi-strand wires so that the multi-strand wires running at the bending point of the multi-strand inlet hole 181302 of the initial twister and at the bending point of the first channel 180101 of the yarn guide block 1801 generate the aforementioned radial clamping force at the bending point, the clamping force between the pair of winding rollers is usually provided by a spring, so that it is easy to adjust the clamping force of the pair of winding rollers 12 for conveying the strands to the rotating shaft 18 as shown in the lower part of fig. 5, and only needs to adjust the elastic deformation amount of the spring or select springs with different specifications, in fact, the better working condition of the pair of winding rollers 12 is that the speed of the rotary conveying of the strands is only slightly lower than the speed of the differential transmission device 22 for drawing the strands to be wound on the yarn winder 20, and simultaneously the clamping force of the pair of winding rollers 12 to the strands can be adjusted to the differential transmission device 22, so as to easily draw and wind the strands to the yarn winder 20 by overcoming the clamping force of the pair of winding rollers 12, and by means of the current mature motor driving technology and the aforementioned spring force adjusting method, the rotary conveying speed of the strands of the pair of winding rollers 12 and the clamping force to the strands can be completely adjusted to the aforementioned working condition, in this way, it is ensured that the axial tension required for the rotary twisting is present at the position of the multi-strand fed into the initial twister and the rotary twister and bent therein, so as to ensure that both perform the twisting effect of one-turn single twisting on the multi-strand fed therein. Of course, even if the unwinding resistance to be overcome, which is required for the differential mechanism 22 to indirectly unwind the singles yarn from the singles bobbin 1, is sufficient to tension the multiple strands everywhere, it is possible to draw off the pair of winding rollers 12 shown below in fig. 4 completely by means of the difference in rotational speed between the winder 20 and the rotary twister 19 to achieve the drawing-in of the multiple strands. The speed of the gripping traction of the strands by the pair of winding rollers 12 as shown above in figure 4 during the operation of the twister needs to be finely adjusted so as to precisely control the speed of unwinding of the strands from the winder 20 to be approximately equal to the speed at which the differential transmission 22 winds the strands from the rotary twister 19 onto the winder 20, in this way, the turns of the multi-strand yarn wound on the yarn winder 20 can generate enough friction force through winding and pressing among the multi-strand yarns to ensure that the multi-strand yarn output from the rotary twister 19 can be smoothly wound on the yarn winder 20 without slipping, and can ensure that the pulling force required for unwinding the multi-strand yarn from the yarn winder 19 is not too large, because the pulling force required for unwinding the multi-strand yarn is larger if the number of the multi-strand coils and the number of the layers of the laminated winding wound on the yarn winder 20 are too large. In summary, in actual production, it is necessary to wind enough number of strands on the yarn winder 20 at the initialization of the twisting machine to ensure that the strands wound on the yarn winder 20 are fastened to the yarn winder 20, and then it is to be noted that the speed of pulling and collecting the twisted strands by the winding device represented by a pair of winding rollers 12 in fig. 4 is not too fast or too slow, which can ensure that the strands can be smoothly and continuously wound from the rotary twister 19 to the yarn winder 20, and can ensure that the twisted strands can be smoothly and continuously unwound from the yarn winder 20 by the winding device represented by a pair of winding rollers 12 in fig. 5, and the core winding bobbin 2001 of the yarn winder 20 is designed to have a certain slope as shown in fig. 3 to 6 and also to relatively conveniently wind the twisted strands smoothly from the yarn winder 20 The strands are unwound from the winder 20. Note that in the present invention, the yarn winder 20 corresponds to the quill 17 of the intermediate product in the ring spinning frame shown in fig. 1, and the collecting and winding device continuously draws and unwinds the multi-strand wound on the yarn winder 20 at a suitable speed is also a guarantee for ensuring the uniformity of the twisting of the multi-strand, because the multi-strand wound on the yarn winder 20 changes the size of the outer diameter thereof and thus the speed of winding the multi-strand from the rotary twister 19 to the yarn winder. In addition to acting as a power provider for unwinding the strands from the winder 20, the take-up winder represented by the pair of winding rollers 12 above fig. 5 actually returns the strands to the rotary twister 19 and outputs them onto the final product package represented by the twisted multi-strand package 6 in fig. 5. The purpose of finely or even dynamically adjusting the instantaneous speed at which the collecting and winding device pulls the strands off the winder 20 in operation of a twisting machine using a twisting device according to the invention, in combination with various sensors, is on the one hand to ensure that unwinding can take place smoothly without the strands being wound too thick in layers on the winder 20 and on the other hand to ensure that the strands are wound tightly around the winder 20 in sufficient numbers of turns or layers to ensure that the differential speed of coaxial co-rotation between the rotary twister 19 and the winder 20 produced by the differential transmission 22 pulls the strands off the rotary twister 19 and onto the winder 20. For the twisting machine using the twisting device provided by the invention, the twisting effect of the multi-strand yarn with any set degree can be realized by adjusting the transmission ratio of the differential transmission device 22, the traction collection speed of the winding device for collecting the twisted multi-strand yarn to the final product cheese represented by the twisted multi-strand bobbin 6 in fig. 5, the steering direction and the rotating speed of the initial twisting device and the rotating twisting device, and other parameters.

It is noted that the above-described embodiments are not intended to limit the scope of the present invention, and that there are certainly many possible implementations and many possible modifications and improvements in the present invention, such as providing a winding device 20 with a circular recess to allow the strands to be wound on the winding device 20 without slipping easily, or applying an elastic roller 2004 to the winding drum 2001 as shown in the bottom of fig. 3 to allow the strands wound on the winding device 20 to be pressed by the roller 2004 without slipping easily. As shown in the lowermost view of fig. 3, the roller 2004 is hinged to a roller carrier 200402 and is always held against the core assembly of the yarn winder 20 by the elastic tension of an elastic band 200403, and the winding drum 2001. Another possible optimization means is to install various sensors to closely monitor the number of winding turns of the multi-strand yarn on the yarn winder 20 and dynamically control the winding collection speed of the multi-strand yarn collection winding device and dynamically control the turning direction and rotation speed of the initial twister and the rotary twister, and other possible ones such as placing a ring capable of sliding and rotating around the center shaft fixing member 2102 to reduce the friction force of the multi-strand yarn rotating around the center shaft fixing member 2102, but any modification, replacement, conventional improvement and the like made within the technical principle of the present invention are included in the intellectual protection scope of the patentees claimed in the claims of the present invention as long as they are based on the technical principle of the present invention.

Claims

1. A twisting apparatus for outputting a twisted multi-strand fed thereto, the twisting apparatus comprising a twister for twisting the multi-strand and a support (1804) for mounting the twister, the twisting apparatus being characterized in that: the twister comprises an initial twister which can clamp the multi-strand fed into the twisting device and twist the multi-strand by continuous rotation; the twister also comprises a rotary twister (19) which can bend and rotate the multi-strand wires so as to twist the multi-strand wires, and the twister also comprises a yarn winder (20), the multi-strand wires output after being twisted by the initial twister firstly enter the rotary twister (19), and the multi-strand wires are wound on the yarn winder (20) after being twisted by the rotary twister (19); the yarn winder (20) can rotate continuously, the rotating direction of the yarn winder (20) is consistent with the rotating direction of the rotating twister (19) but the rotating angular speeds of the yarn winder (20) and the rotating twister (19) are different, so that the yarn winder (20) can pull out and wind the strands from the rotating twister (19) on the yarn winder (20) or the rotating twister (19) can pull out and wind the strands from the rotating twister and the strands on the yarn winder (19); the stranded wires wound on the yarn winding device (20) are unwound from the yarn winding device (20) and folded back to the rotary twister (19), and the stranded wires folded back to the rotary twister (19) are rotated together with the rotary twister (20) and output after at least one bending.

2. A twisting apparatus according to claim 1, wherein: the rotating twister (19) and the yarn winder (20) are rotated together in the same direction through a differential transmission device, and the angular speed differential between the rotating twister and the yarn winder is ensured; the yarn winder (20) is positioned outside the rotary twister (19), the multiple strands twisted by the rotary twister (19) are wound on the yarn winder (20) from the outside of the yarn winding part of the yarn winder (20), and the differential transmission device is positioned inside the rotary twister (19).

3. A twisting apparatus according to claim 2, wherein:

the rotary twister (19) comprises a hollow rotating shaft (18) which is arranged on the bracket (1804) and can be driven to rotate freely, the rotary twister (19) also comprises a hollow rotary drum (1901) which is fastened with the rotating shaft (18) into a whole, and a plurality of strands fed into the rotary twister (19) pass through the hollow interior of the rotating shaft (18) and then are bent to pass through the rotating shaft (18) and then enter a yarn guide channel (1903) on the wall of the rotary drum (1901); the stranded wires penetrate out of the yarn guide channel (1903) and then are wound on the yarn winder (20);

the yarn winder (20) comprises a hollow center shaft (21) positioned on the axis of rotation of the yarn winder, and further comprises a yarn winding drum (2001) capable of freely rotating around the center shaft (21), wherein a plurality of strands which penetrate out of a yarn guide channel (1903) of the rotary drum (1901) are wound on the yarn winding drum (2001); the hollow center shaft (21) is provided with a hollow internal channel which is through axially and through which multiple strands can pass, the multiple strands wound on the yarn winding drum (2001) enter the hollow internal channel of the center shaft (21) after being unwound and are folded back to the rotary twister (19) through the hollow internal channel, and the multiple strands folded back to the rotary twister (19) enter the hollow interior of the rotating shaft (18) and are output after being bent for at least one time.

4. A twisting apparatus according to claim 3, wherein:

a hollow channel (1808) which penetrates through the whole rotating shaft (18) axially is arranged in the rotating shaft axis direction of the hollow rotating shaft (18), and the stranded wires fed into the rotary twister (19) firstly penetrate into the hollow channel (1808); a yarn guide block (1801) is fixedly inserted on the shaft body of the rotating shaft (18), two channels for multiple strands to pass through are arranged in the yarn guide block (1801), an opening at one end of a first channel (180101) is butted with the hollow channel (1808) of the rotating shaft (18), the multiple strands entering the rotating twister (19) are bent and then output to the outside of the rotating shaft (18) from an opening at the other end of the first channel (180101) to enter a yarn guide channel (1903) of the rotating drum (1901);

the middle shaft (21) is provided with a yarn channel (2108) which axially penetrates through the whole middle shaft (21), one end of the yarn channel (2108) is opened to be opposite to one end of the hollow channel (1808) of the rotating shaft (18), and a plurality of strands unwound from the yarn winding drum (2001) are folded back to enter the hollow channel (1808) of the rotating shaft (18) through the yarn channel (2108);

one end opening of a second channel (180102) in the two channels for the multiple strands to pass through of the yarn guide block (1801) is butted with the hollow channel (1808) of the rotating shaft (18) so that the multiple strands folded back to the rotating shaft (18) can penetrate into the second channel (180102), the multiple strands penetrating into the second channel (180102) are bent at least once therein and then output out of the rotating shaft (18) from the other end opening of the second channel (180102) so as to be output from the twisting device.

5. A twisting apparatus according to claim 3, wherein:

a middle shaft fixing part (2102) which is fixedly arranged at a position of the middle shaft (21) outside the yarn winding barrel (2001) and cannot rotate along with the yarn winding barrel by utilizing separated magnetic force; a driving gear (1803) which can drive the differential transmission device is fastened on the rotating shaft (18), and the driving gear is coaxial with the rotating shaft (18) and can rotate along with the rotating shaft (18); the differential transmission device comprises a first transmission gear (2201) meshed with a driving gear (1803) extending into the rotary drum (1901), and further comprises a second transmission gear (2202) coaxially and fixedly integrated with the first transmission gear (2201), the differential transmission device further comprises a gear mounting disc (2203) used for mounting the first transmission gear (2201) and the second transmission gear (2202), and the gear mounting disc (2203) is fastened on the middle shaft (21); the yarn winder (20) further comprises a driven gear (200301) which is fastened with the yarn winding barrel (2001) into a whole, the rotating axis line of the driven gear (200301) is overlapped with the rotating axis line of the yarn winder (20), and the driven gear (200301) is meshed with the second transmission gear (2202).

6. A twisting apparatus according to claim 1, wherein:

the initial twister and the rotary twister (19) rotate simultaneously by a mechanical linkage.

7. A twisting apparatus according to claim 1, wherein: the direction of rotation of the initial twister, which grips the strands fed to the twisting device and applies twisting to the strands by continuous rotation, is opposite to the direction of rotation of the rotary twister (19).

8. A twisting apparatus according to claim 1, wherein: the initial twister grips the strands by causing them to bend.

9. A twisting apparatus according to claim 7, wherein: said initial twister includes a motive turntable (1809) rotatable with said initial twister; the rotary twister (19) comprises a driving turntable (1810), and the driving turntable (1810) can drive the rotary twister (19) to continuously rotate so as to carry out twisting operation on the multi-strand; the driving rotary disc (1809) is connected with the driving rotary disc (1810) through a whole circle of transmission belt (1812), the transmission belt (1812) is simultaneously and tightly wound on the driving rotary disc (1809) and the driving rotary disc (1810), the transmission belt (1812) between the driving rotary disc (1809) and the driving rotary disc (1810) is also tightly wound on a pair of reversing rotary discs (1811), and when the driving rotary disc (1809) rotates along with the initial twister, the driving rotary disc (1810) is driven to rotate through the pair of reversing rotary discs (1811) and the transmission belt (1812) so as to drive the rotary twister (19) to rotate continuously.

10. A twisting machine, characterized in that the twisting machine uses a twisting device according to claim 1.