CN1112082A - Yarn winding machine - Google Patents

Abstract

A yarn winding machine includes: a pair of bobbin holders on which bobbins are mounted; a pair of support arms mounted on the frame and rotatably supporting the bobbin holders; The friction roller of the wire package; the detection device for detecting the rotation speed of the bobbin, which includes: a magnetic element, fixed on a predetermined position on the circumference of one of the bobbin holders, and an annular channel when the bobbin holder rotates. It also includes a detection element fixed to one of the supporting arms, which is arranged opposite to the annular channel of the magnetic element to detect its magnetic force lines and send out signals corresponding to the normal and abnormal rotation speeds of the bobbin.

Description

The present invention relates to a frictional contact driven yarn winding machine provided in a yarn drafting and false twisting device, in particular to a device suitable for detecting the number of revolutions of a bobbin to determine whether the rotation of the bobbin is in normal condition.

The present invention also relates to a friction contact driven yarn winding machine arranged in a yarn drafting and false twisting device, and in particular to a device for detecting abnormally wound yarn on a friction roller, wherein the friction roller is adapted to cooperate with The bobbin and yarn package are in frictional contact to rotate the bobbin and the yarn package wound on the bobbin.

As in the prior art yarn winding machines used to wind processed yarns in yarn drafting and false twisting machines, so far in various machines typified by frictional contact driven yarn winding machines, Said yarn winding machine comprises a pair of bobbin holders holding bobbins, a pair of bobbin holder rocker arms rotatably mounted on a stationary frame structure and having respective free ends which are connected to each other. coaxially rotatably supporting the bobbin holder, and further comprising a friction roller driven to rotate, the bobbin holder rocker swinging between a first angular position and a second angular position, wherein, in the first angular position, the bobbin The frictional contact is maintained with the friction roller so that the yarn is wound thereon until the yarn is completely wound on the bobbin into a full yarn package. In the second angular position, however, the yarn package is out of frictional contact with the friction roller.

The bobbin with the thus wound full yarn package is then replaced by a new bobbin in a doffing operation which is carried out by the package doffing device. In recent years, a number of package doffing machines have been developed, all of which are designed to operate automatically to carry out this doffing process.

In conventional package doffing equipment, the difficulty is often encountered that all the yarn packages continuously doffed by the package doffing equipment cannot be processed when the size of some yarn packages exceeds the limit of its predetermined size. Continuously put into a cardboard box. Sometimes excessively large yarn packages cause failure of the braking system, which is fitted in the package doffer and operates synchronously with the doffer, as a result, if the braking system brakes the doffer before The coil is easily damaged if it is dropped into the package receiver.

In order to overcome these shortcomings of common package doffing equipment, another equipment has been proposed, which is suitable for detecting the rotation of the bobbin and package, so as to prevent the package from being produced on the bobbin beyond its predetermined size limit. . As devices for detecting the rotation conditions of bobbins and packages, a pair of switches and an optical sensor have been proposed, the former is expensive, the latter has a problem of low reliability caused by degraded detection accuracy, and Deteriorated detection accuracy is caused by dust and dew adhering to the photosensor switch gear.

This type of universal yarn winding machine consists of a friction roller adapted to be in frictional contact with the bobbin and the package so that the yarn is wound on the bobbin to form a package consisting of a predetermined length of yarn. In this type of yarn winding machine, a bobbin first comes into frictional contact with a friction roller, is driven to rotate by the friction roller, and is then placed on the head end of the advancing yarn fed by the yarn drafting and false twisting equipment. After being captured by an annular groove formed in the longitudinal end of the bobbin, the yarn is reciprocated laterally by a yarn traverse guide, and the yarn is wound on the bobbin. The head end of the traversing yarn caused by some reasons is not caught by the annular groove in the general yarn winding machine, so the end of the traversing yarn is wound on the friction roller through the bobbin and the friction roller rather than on the bobbin. In this case, it is necessary to quickly find out such an abnormal situation in order to restore the winding process to a normal situation. Especially in the case where the yarn is continuously wound on a friction roller to form a non-abnormal yarn package, such a yarn package may cause certain troubles, namely, not only the adjacent parts of the yarn winding machine and the The element is damaged and the motor driving the friction roller stops suddenly due to its overload.

On the other hand, general-purpose yarn winding machines sometimes encounter such a situation that if the yarn winding machine vibrates and shocks due to some external force applied to the yarn winding machine, the yarn winds abnormally. On the friction roller, the yarn package is immediately out of frictional contact with the friction roller. This causes the motor of the friction roller to stop suddenly due to its overload (for a similar reason to the foregoing). The sudden stop of the above-mentioned motor causes the production efficiency of the yarn package to decrease.

It will be appreciated that the aforementioned drawbacks prevent the package doffing equipment of this type of yarn winding machine from performing a fully automated doffing operation, including the annular groove used to hook the end of the yarn on the bobbin. The yarn hooking step on the groove so that the head end of the yarn is caught by the annular groove of the bobbin, the yarn winding step used to wind the yarn on the bobbin to form a yarn package, and the yarn winding step used to wind the yarn on the bobbin The bobbin changing step where the yarn package is unloaded from the bobbin creel and the full yarn package is replaced with a subsequent empty bobbin.

The present invention seeks to provide an improved yarn winding machine which overcomes the above-mentioned drawbacks of said general prior art yarn winding machines.

It is therefore a first object of the present invention to provide a yarn winding machine which is inexpensive and suitable for a fully automated doffing process.

A second object of the present invention is to provide a yarn winding machine in which detection accuracy does not rapidly decrease even under the severe environment in which the yarn winding machine is located.

A third object of the present invention is to provide a yarn winding machine of the friction-driven type designed to reliably detect bobbin rotation conditions.

A fourth object of the present invention is to provide a yarn winding machine adapted to detect bobbin rotation conditions thereby preventing a package from being formed on the bobbin beyond its predetermined size limit.

A fifth object of the present invention is to provide a yarn winding machine suitable for detecting abnormal operation of the brake system caused by an abnormal rotation condition of the bobbin, so that the package never falls from the package before the brake system stops The roll equipment is put into the package receiver.

A sixth object of the present invention is to provide a yarn winding machine designed to rapidly detect an abnormal rotation condition of the bobbin by calculating the radius of the yarn package from the bobbin rotation speed and the yarn winding speed, thereby eliminating Trouble in subsequent processes such as packaging of yarn packages.

A seventh object of the present invention is to provide a yarn winding machine that enables the operator to quickly perceive that the yarn has been wound on the friction roller, thereby not causing damage to the mechanical parts and elements of the yarn winding machine, At the same time, it is possible to prevent a reduction in the productivity of the yarn package.

An eighth object of the present invention is to provide a yarn winding machine suitable for separating the yarn abnormally wound on the friction roller from the yarn on the yarn traveling path, so that mechanical parts of the yarn winding machine will not be damaged. and component damage.

According to a first aspect of the invention there is provided a yarn winding machine for winding yarn on a bobbin to form a yarn package on the bobbin, comprising a stationary frame structure with support arms and a bobbin holder, The bobbin holder has its own axis of rotation and is supported on the support arm, its own axis of rotation extending towards the support arm, a bobbin having an axis of rotation when the bobbin is held by the bobbin holder and the axis of rotation of the bobbin holder Coaxial, a friction roller whose axis of rotation is parallel to the axis of rotation of the bobbin holder and maintains frictional contact with the yarn wound on the bobbin until the yarn forms a full yarn package, the bobbin holder and friction roller move separately In order to move the bobbin and the bobbin holder relative to the friction roller to a winding position and a package release position, in the winding position, the bobbin is in friction contact with the friction roller and the bobbin is driven to rotate by the friction roller so that The yarn is wound on the bobbin, and the yarn package is out of contact with the friction roller at the package release position, so that the yarn package is released from the bobbin holder. The yarn winding machine also includes a detection bobbin A bobbin rotation number detection device with a rotation number, the rotation number detection device includes a magnetic element, which is fastened to a predetermined position on the circumferential portion of the bobbin holder and has an annular passage, on which the magnetic element Rotating with the rotation of the bobbin holder, it also includes a detection element, which is fixedly mounted on the support arm and opposite to the annular channel of the magnetic element to detect the magnetic force lines of the magnetic element and send out a signal corresponding to the rotation number of the bobbin.

According to a second aspect of the present invention, there is provided a yarn winding machine for winding yarn on a bobbin to form a yarn package thereon, comprising a static out frame structure with a pair of oscillating support arms, the a pair of support arms spaced apart from each other and having their own swing axes, a pair of bobbin holders having their own axes of rotation, each bobbin holder being rotatably supported on each swing support arm with its own axis of rotation swinging toward The support arm extends, a bobbin having an axis of rotation coaxial with the axis of rotation of the bobbin holder when the bobbin is held by the bobbin holder, a friction roller whose axis of rotation is parallel to the axis of rotation of the bobbin and The yarn on the tube is in frictional contact until the yarn forms a full yarn package, a swing support arm swings about its swing axis to move the bobbin relative to the friction roller with the bobbin holder to a winding position and a package In the disengagement position, the bobbin is in frictional contact with the friction roller at the winding position and is driven to rotate by the friction roller so that the yarn is wound on the bobbin, while at the package disengagement position the yarn package is out of contact with the friction roller so that To disengage the yarn package from the bobbin holder, the winding machine also includes a bobbin rotation detection device for detecting the bobbin rotation to send a signal corresponding to the rotation, and a braking device for when The bobbin is separated from the friction roller by the swing support arm so that the bobbin holder is selectively braked when it is out of contact with the friction roller, and the bobbin holder moving device is used to move the bobbin holder towards and away from each other relative to the bobbin. The bobbin holding position and the bobbin disengaging position, in which the bobbin is held by the bobbin holder, the longitudinal ends of the bobbin are respectively engaged with the bobbin holder, and in the bobbin disengaging position, the bobbin The tube is disengaged from the bobbin holder, the longitudinal ends of the bobbin are respectively disengaged from the bobbin holder, and the brake condition determination device is used to check the brake condition of the brake device based on the output signal from the bobbin rotation number detection device to determining whether the bobbins are stopped within a predetermined period of time after the bobbin holder is braked by the braking means, the package release control means for controlling the bobbin tube moving means based on an output signal from the braking condition determining means In order to selectively disengage the bobbin from the bobbin holder when the swing support arm swings to the package disengagement position of the swing support arm.

According to a third aspect of the present invention, there is provided a yarn winding machine for winding yarn on bobbins to form yarn packages thereon, comprising a stationary frame structure with support arms, a bobbin holder , which has its own axis of rotation and is supported on the support arm, its own axis of rotation extending towards the support arm, the bobbin having the axis of rotation being coaxial with the axis of rotation of the bobbin holder when the bobbin is held by the bobbin holder, a friction roller having an axis of rotation parallel to the axis of rotation of the bobbin holder and in frictional contact with the yarn wound on the bobbin until the yarn forms a full yarn package, said bobbin holder and friction roller moving separately To make the bobbin move relative to the friction roller and the bobbin holder to a winding position and a package disengagement position, in the winding position the bobbin is in friction contact with the friction roller and is driven by the friction roller to rotate so that the yarn is wound On it, while in the package disengagement position, the yarn package is out of frictional contact with the friction roller to release the yarn package from the bobbin holder, the yarn winding machine includes detection of abnormal yarn winding on the friction roller The detection device on the detection device includes: a light projector located near the friction roller, which projects light onto the circumferential surface of the friction roller, a light receiver located near the friction roller and the light projector, which receives light from the light projector light projected and reflected by the yarn wound on the rubbing roller, and determining means for determining whether the yarn is wound on the rubbing roller according to the amount of light received by the light receiver, when a predetermined amount of yarn is wound on the rubbing roller An abnormal condition is signaled when on.

Objects and advantages of the present invention will become more apparent when described in conjunction with the accompanying drawings.

Figure 1 is a partial sectional view of a bobbin holder forming part of a first embodiment of a yarn winding machine according to the invention, one of a pair of support arms and a detection circuit,

Figure 2 is a schematic side view of a first embodiment of a yarn winding machine,

Figure 3 is a partial side view of one of the support arms shown in Figure 1,

Figure 4 is an enlarged front view of another support arm forming part of the first embodiment of the yarn winding machine,

Figure 5 is a side view of another support arm shown in Figure 4,

Figure 6 is a schematic side view of a second embodiment of a yarn winding machine according to the invention,

Figure 7 is a schematic side view of a third embodiment of a yarn winding machine according to the invention,

Figure 8 is a schematic plan view of a friction roller, a light projector and a light receiver forming part of the yarn winding machine shown in Figure 7,

Figure 9 is a schematic plan view of a friction roller, a light projector and a light reception forming part of a fourth embodiment of a yarn winding machine according to the invention.

A first embodiment of the yarn winding machine of the present invention, which is designed as one of many yarn winding machines provided in a yarn drafting and false twisting device, will now be described in detail with reference to the accompanying drawings.

The yarn winding machine, shown in Figures 1-5, is adapted to wind yarn onto bobbins and comprises a stationary frame structure 1 with a pair of oscillating support arms 2 and 3 spaced apart from each other, with its own rotating A pair of bobbin holders 5 and 6 on the axis. Each bobbin holder 5 and 6 is supported on each swing support arm 2 and 3 via a rotating shaft 7, and the bobbin holder 5 and 6 its own axis of rotation extends toward the swing support 2 and 3 and rotates around its own axis. The bobbin holders 5 and 6 are adapted to move selectively toward and away from each other with respect to the bobbin 11 to a bobbin holding position and a bobbin release position in which the bobbin 11 is held by the bobbin holders 5 and 6 Hold, the longitudinal ends 11a and 11b of the bobbin 11 are respectively engaged with the bobbin holders 5 and 6, and the bobbin 11 is disengaged from the bobbin holders 5 and 6 at the bobbin release position, and the longitudinal ends of the bobbin 11 11a and 11b are disengaged from bobbin holders 5 and 6, respectively. The bobbin 11 is indicated by a dotted line, and its axis of rotation is coaxial with the axis of rotation of the bobbin holders 5 and 6 when held by the bobbin holders 5 and 6 .

The support arms 2 and 3 are designed to oscillate about their oscillating axes so that the bobbin 11 moves together with the bobbin holders 5 and 6 relative to the friction roller 20 whose axis of rotation is parallel to the axis of rotation of the bobbin holders 5 and 6 . The friction roller 20 is in frictional contact with the yarn 12 wound on the bobbin 11 until the yarn 12 forms a full yarn package 10 . When the yarn 12 forms the yarn package 10, the bobbin holders 5 and 6 are moved by the swing support arms 2 and 3 to move the bobbin 11 relative to the friction roller 20 together with the bobbin holders 5 and 6 to the winding position and The package release position, in the winding position, the bobbin 11 is in frictional contact with the friction roller 20 and is driven to rotate by the friction roller 20 so that the yarn 12 is wound on it, and in the package release position, the yarn package 10 breaks away from the frictional contact with the friction roller 20 so that the yarn package 10 is disengaged from the bobbin holders 5 and 6, and the swing support arms 2 and 3 are provided by the support arm swing device not shown in the figure to be compatible with the general support arm swing device Swivel to the yarn winding position and the package disengagement position in a similar manner.

The yarn winding machine also includes a bobbin holder moving device 15 for selectively moving the bobbin holders 5 and 6 towards and away from each other with respect to the bobbin 11, as shown in Figure 5, the bobbin holder moving device 15 has an inclined Arm 31, bobbin holder rocker arm 32 and finger 34, wherein the inclined arm 31 has an end 31a adapted to support the bobbin holder 6, the bobbin holder rocker arm 32 is held by the cradle shaft 36 forming part of the stationary support structure 1 Connected to the pendulum support arm 2 for rotation about the cradle axis 36 relative to the stationary frame structure 1, the finger 34 is rollingly supported on the other end 31b of the tilt arm 31, which is supported at its longitudinal middle portion 31c by the barrel The tube stand rocker arm 32 is supported for tilting about a pivot pin 33 forming part of the tube stand rocker arm 32 . The fingers 34 are adapted to rollably engage the movable cam portion 16 forming part of the stationary frame structure 1 and to tilt the tilting arm 31 about the pivot pin 33 so that when the swinging support arms 2 and 3 rotate around the stationary frame structure 1 When its swing shaft swings, the bobbin holders 2 and 3 move towards and away from each other through the swing support arms 2 and 3 so as to move to the bobbin holding position and the bobbin disengaging position.

The yarn winding machine also comprises a friction roller 20 having an axis of rotation parallel to the axis of rotation of the bobbin 11 .

The yarn winding machine further includes a bobbin rotation number detection device 40 for detecting the number of rotations of the bobbin 11 . The revolution detection device 40 includes a magnetic member 41 fastened to a predetermined position on a circumferential portion of one of the bobbin holders 5 and 6 and an annular passage on a bobbin holder on which the magnetic member 41 It rotates with the rotation of the bobbin holders 5 and 6 and includes a detection element 42, which is installed on one of the swing support arms 2 and 3 and is opposite to the annular passage of the magnetic element 41 to detect the magnetic line of force of the magnetic element 41 and output the same Signal corresponding to the number of revolutions of the bobbin 11 in order to be able to determine the normal and abnormal rotational conditions of the bobbin 11, the magnetic element 41 is embedded in one of the bobbin holders 5 and 6, and the detection element 42 is embedded in one of the swing support arms 2 and 3 Among them, one of the swing support arms 2 and 3 is opposite to and spaced apart from one of the bobbin holders 5 and 6.

The detection element 42 is composed of a Hall effect element, which is well known in the prior art. When the magnetic element 41 is opposite to the Hall effect element to detect the magnetic field lines of the magnetic element 41, the detection element 42 sends out a voltage signal The signal thus generated by the detection element 41 is sent to a detection circuit 50 which is replaced by an abnormal braking detection circuit. The detection circuit 50 may be constituted by a series of circuits including a power supply circuit, an amplifying circuit, a calculation circuit with a timer, and a logic circuit (not shown in the figure), and periodic signals are processed by the above-mentioned series of circuits to ensure A large number of rotation pulses corresponding to the number of revolutions of the bobbin holders 5 and 6 are generated within a certain time frame from the start of the winding operation of the yarn winding machine by a pulse counter forming part of the above-mentioned detection circuit 50 and are totally monitored accurately. , so that the number of revolutions of the bobbin 11 within a certain time range can be calculated, for example, how many revolutions per minute (r.p.m).

The bobbin revolution detection device 40 may have a plurality of magnets which are angularly spaced apart from each other and which rotate one of the bobbin holders 5 and 6 on an annular path spaced from and opposite to the detection element 42 .

Yarn winding machine also comprises the braking device that is used for braking bobbin frame 5 and 6, and as shown in Figure 3 to 5, braking device 60 has the first brake 61 that is used for braking bobbin frame 5 and uses Used to brake the second brake 61' of the bobbin holder 6.

The brake 61 comprises an annular brake cylinder, not shown, which is fastened to the inner peripheral surface of the bobbin holder 5 opposite to the swing support arm 2, a pair of brake arms 62 and 63, which are anchored Pins 64 are supported opposite each other on the swing support arm 2 and have respectively rough-machined brake pad portions 62a and 63a, a pair of toggle links 65 and 66, each having a pivotal connection via a pivot pin 67. To one end on the free end of each brake arm 62 and 63, a link 68 is pivotally connected at one end to the other end of toggle links 65 and 66 via a pivot pin 69. , a rocker arm 70 has a middle part supported on the swing support arm 2 through a pivot pin 71 and an end part pivotally connected to the other end part of the connecting rod 68 through a pivot pin 72, a The finger 73 is rotatably supported on the other end of the rocker arm 70 and rotates about its own axis relative to the rocker arm 70. A stationary cam 1a forming part of the stationary frame structure 1 is engaged with the finger 73 to make the finger 73 rotatable. The finger 73 receives the outer contour of the stationary cam 1a and rocks the rocker arm 70 when the swing support arms 2 and 3 swing towards the yarn winding position of the swing support arms 2 and 3 and away from this position, and also includes elastic push means 74, It is used to elastically push the rocker arm 70 so that the finger 73 engages with the stationary cam 1a through the rocker arm 70 .

Brake arms 62 and 63 can swing to a brake position and a disengagement position, and in this brake position, brake arms 62 and 63 are in frictional contact with the annular brake cylinder, and in disengagement position brake arm 62 and 63 are out of frictional contact with the annular brake cylinder, and the rocker arm 70 can be rocked to make the brake arms 62 and 63 swing to the braking position and the disengaging position through the connecting rod 68 and the toggle links 65 and 66. According to the present invention, the elastic device can be constituted by a helical coil spring. The yarn winding machine also includes a package stocker 80 for stopping and holding the full yarn package 10 doffed from the yarn winding machine.

The second brake 61' of the braking device 60 has an additional rocker arm 76, which is oscillatingly supported on the longitudinal middle portion 31c of the tilting arm 31 and is connected to the rocker arm 70 similar to the rocker arm 70 of the first brake 61 by a connecting rod 77. On the arm 70', a finger 78 rollingly supported on the other end of the additional rocker arm 76, a static upper cam 1c, which forms part of the stationary frame structure 1 and engages with the finger 78 to receive the finger 78. The outer profile of the stationary cam 1c and swings the rocker arm 70' and the additional rocker arm 76 when the swing support arms 2 and 3 are swung towards and away from the yarn winding position of the swing support arms 2 and 3, also with elastic push means 79 , used to elastically push the additional rocker arm 76 so that the finger 78 engages with the stationary cam 1c of the stationary frame structure 1 through the additional rocker arm 76 . The second brake 61 ′ also comprises a series of members driven by the rocker arm 70 ′ in a similar manner to the series of members 62 - 68 of the first brake 61 of the braking device 60 . More particularly, the series of components of the aforementioned second brake 61' has an annular brake cylinder, not shown in the figure, which is fixedly installed on the inner peripheral surface of the bobbin holder 6 opposite to the swing support arm 3. , a pair of brake arms 62' and 63' supported on the swing support arm 3 by an anchor pin 64' and facing each other, a pair of toggle links 65' and 66', each having a pivotable Groundly connected to one end on the free end of each brake arm 62' and 63', a link 68', which has a pivot on the other end connected to toggle links 65' and 66' One end pivots and the other end is pivotally connected to rocker arm 70'.

The aforementioned braking device 60 is designed to brake the bobbin holders 5 and 6 when the yarn package 10 moves together with the bobbin holders 5 and 6 so as to be out of contact with the friction roller 20 . The braking condition of the braking device 60 is detected by the detection circuit 50 according to the output signal from the detection element 41. In particular, the number of rotation pulses counted by the pulse counter of the detection circuit 50 is delivered to the braking condition determination device, not shown. In the figure, it forms a part of the detection circuit 50 to detect the braking condition of the brake device 60 based on the output signal from the bobbin revolution detection device 40 so as to determine whether the bobbin holders 5 and 6 are braked by the brake device 60. Whether the bobbin 11 stops within a predetermined time range after starting. When the bobbin 11 is stopped within a predetermined time range after the bobbin holders 5 and 6 are braked by the braking device 60, a braking normal signal is output from the brake condition determination means, and when the bobbin holders 5 and 6 If the bobbin 11 is not stopped within a predetermined time range after being braked by the brake device 60, a brake abnormality signal is output from the brake condition determination device, and the brake normal and abnormal signals are respectively input into the package release control device. , which is not shown in the drawings, it forms part of the control circuit of the yarn winding machine. The package release control device is adapted to control the bobbin holder moving device 15 so that when the swing support arms 2 and 3 leave the friction roller 20 and swing to the package release position of the swing support arms 2 and 3, the package with a full yarn The bobbin 11 loaded with 10 can be selectively disengaged from the bobbin holders 5 and 6. In this embodiment, the bobbin holder moving device 15 is controlled by the package release control device, so that when the bobbin holder 5 and the 6. The bobbin holders 5 and 6 are moved to the bobbin release position when the bobbin 11 is stopped within a predetermined time frame after being braked by the braking device 60.

The operation of the first embodiment of the thus constructed yarn winding machine according to the invention will now be described hereinafter.

When the pivoting support arms 2 and 3 are pivoted in the direction of arrow B in FIG. 2 , the empty bobbins 11 held by the bobbin holders 5 and 6 first come into frictional contact with the friction roller 20 . Under these conditions, the empty bobbin 11 is driven to rotate by the friction roller 20, the bobbin holders 5 and 6 rotate simultaneously with the bobbin 11 so that the yarn 12 is wound on the bobbin 11, fastened to the bobbin holder 5 The magnetic element 41 at a predetermined position on the circumferential portion rotates on the annular passage of the magnetic element 41 to periodically pass over the detection element 42, and whenever the magnetic element 41 passes over the detection element 42, the magnetic force lines of the magnetic element 41 begin to affect the detection element 42 and detected by the detection element 42, the magnetic line of force of the magnetic element 41 that affects the detection element 42 fluctuates with the distance between the magnetic element 41 and the detection element 42 so that the detection element 42 produces a peak detection signal during one revolution of the bobbin holder 5 , and then the driven detection circuit 50 determines whether the peak detection signal exceeds a predetermined value. When the peak detection signal exceeds a predetermined value, the detection circuit 50 generates a rotation signal corresponding to one revolution of the bobbin holder, and when the peak detection signal does not exceed the predetermined value on the contrary, the detection circuit 50 does not generate a rotation equivalent to one rotation of the bobbin holder Pulses, rotation pulses corresponding to the number of revolutions of the bobbin holder 5 are counted by the pulse counter of the detection circuit 50 at predetermined time intervals.

According to the present invention, the number of revolutions of the bobbin holder 5 can be accurately detected by the detection element 42 constituted as above and counted by the pulse counter of the detection circuit 50, even if the detection element 42 is in such a state affected by fine fiber dust and dew. The same can be true in poor quality environments. A more favorable result is that the detection element 42 is constituted by a Hall effect element, because each peak detection signal is generated every moment when the magnetic element 41 is opposed to the Hall effect element so that the Hall effect element detects the magnetic field lines of the magnetic element 41 a voltage value. Furthermore, the bobbin rotation speed detection device 40 for detecting the rotation speed of the bobbin 11 configured according to the present invention can also be manufactured at low cost.

The yarn 12 is wound continuously on the bobbin 11 to form a yarn package 10 until the diameter of the package on the bobbin 11 reaches a predetermined diameter determined by the full yarn package 10 and a predetermined rotation with the bobbin holder 5. The number is equivalent. When the full yarn package 10 completed on the bobbin 11 is detected by the detection circuit 50 and the number of revolutions of the bobbin holder 5 reaches a predetermined value, the yarn 12 is removed from the full yarn package by a yarn cutter not shown in the figure. Cut off on the thread package 10, then the swing support arms 2 and 3 swing in the direction shown by arrow A in Fig. 2 so that the full yarn package 10 is removed from the friction roller 20 until the full yarn package 10 reaches the non-winding position. In this non-winding zone, the rocker arm 70 swings in the direction shown by arrow C in FIG. As a result, the brake arms 62 and 63 come into frictional contact with the brake cylinders on the inner peripheral portion of the bobbin holder 5, so that the bobbin holder 5 is braked until the bobbin 11 and the full yarn package 10 stop. At the same time, the bobbin 6 is braked by the second brake 61 ′ of the braking device 60 in a similar manner to the bobbin holder 5 .

The swing angles of the swing support arms 2 and 3, which swing in the direction shown by arrow A to move the full yarn package 10 away from the friction roller 20 to the non-winding area, are detected by a limit switch not shown. The signal of the limit switch is then supplied to the detection circuit 50, which is then activated to determine whether the peak detection signal exceeds a predetermined value and counts rotation pulses corresponding to the number of revolutions of the bobbin holder 5 within a predetermined time interval. When the number of rotation pulses counted by the pulse counter of the detection circuit 50 is determined by the detection circuit 50 not to exceed a predetermined value within a predetermined time interval so as to generate a normal braking signal, the detection circuit 50 judges that the braking device 60 is normally operated. In particular, when the bobbin holders 5 and 6 are braked by the braking device 60 under normal braking conditions, the number of revolutions of the yarn package 10 within a predetermined time interval is determined by the braking device 60 against the bobbin holder 5. and 6, under these conditions, the detection circuit 50 detects the number of rotation pulses counted by the pulse counter of the detection circuit 50 within a predetermined time interval, so that when the number of rotation pulses counted by the pulse counter does not exceed the predetermined number, that is, in this embodiment In the example, a normal brake signal is generated when it is zero. When a normal braking signal is generated, the detection circuit 50 judges that the braking device 60 is operating normally. The normal braking signal of the detection circuit 50 is input to the above-mentioned control circuit of the yarn winding machine so that the full yarn package 10 is doffed to a package stocker 80 and waits until the full yarn package 10 is delivered to the subsequent process . When the full yarn package 10 is doffed towards the package stacker 80, the swing support arms 2 and 3 swing towards the package release position, and the bobbin holder moving device 15 tilts the tilting arm 31, so that the full yarn package Pack 10 is disengaged from bobbin holders 5 and 6.

If, on the other hand, the braking device 60 fails for some reason and the bobbin holder 5 is not braked by the braking device 60 before the full yarn package 10 is doffed and guided by the package stocker 80, In this case, the detection circuit 50 generates an abnormality when the number of rotation pulses counted by the pulse counter of the detection circuit 50 during a certain period of time for normal braking is respectively confirmed to exceed a predetermined value such as zero within a predetermined time interval. brake signal. At this time, it is judged by the detection circuit 50 that the braking device 60 is operating abnormally. In this case, the abnormal braking signal of the detection circuit 50 is input into the control circuit forming part of the yarn winding machine so that the full yarn package 10 is not doffed onto the package stocker 80 . In other words, when the bobbin 11 does not stop within a predetermined time frame after the bobbin holders 5 and 6 are braked by the braking device 60, the bobbin with the full yarn package 10 does not come off the bobbin holders 5 and 6. open. Therefore, the full yarn package 10 is never loosened or damaged, and the operator can immediately feel the abnormal condition of the braking device 60 due to the sudden alarm.

According to the present invention as described above, the yarn winding mechanism is simple in structure and low in production cost. The yarn winding machine can detect the rotation condition of the bobbin holder with high accuracy and reliability even under the bad environment of the yarn winding machine such as fine dust and dew, thereby preventing the package from being formed on the bobbin beyond the predetermined size limit. In addition, the yarn winding machine according to the present invention is constructed so as to detect abnormal operation of the braking device 60 due to abnormal rotation conditions of the bobbin holders 5 and 6, so that before the packages are stopped by the braking device 60 A full yarn package 10 is never dropped into the package stocker 80 from the package doffing device of the yarn winding machine. Therefore, the yarn winding machine according to the present invention is capable of automatic doffing operation so as to automatically move and doff the full yarn package 10 to the non-winding zone where the yarn package is detached from the friction roller 20. Frictional contact, with a follow-up empty bobbin 11 to replace a package 10 of full yarn.

A second embodiment of the yarn winding machine of the present invention will now be described in detail with reference to the accompanying drawings.

A second embodiment of a yarn winding machine according to the invention is shown in FIG. 6 . The yarn winding machine also includes a calculation circuit 91, which is used to calculate the rotating speed of the bobbin holder 5 according to the output signal from the detection element 42, and is used to detect the yarn winding speed of the yarn 12 wound on the bobbin 11. A winding speed detection circuit 92 and a yarn package diameter detection circuit 93 are used to calculate the diameter of the yarn package 10 according to the rotating speed calculated by the calculation circuit 91 and the yarn winding speed detected by the winding speed detection circuit 92 , so that the yarn package diameter signal is output when the diameter of the yarn package 10 formed on the bobbin 11 exceeds a predetermined range of the yarn package diameter. Each of the above-mentioned circuits 91-93 has a power supply circuit, an amplification circuit, a calculation circuit with a timer and a counter, and a logic circuit, which will not be described below.

In this embodiment of the yarn winding machine according to the present invention, the rotation speed calculation circuit 91 calculates the rotation speed of the bobbin holder 5 ie the rotation speed of the bobbin 11 and the yarn package 10 according to the output signal from the detection element 42 . Then, the data related to the traveling speed of the yarn 12 is input to the winding speed detection circuit 92 from a control circuit forming a part of the yarn drafting and false twisting apparatus so that the winding speed detection circuit 92 detects the yarn wound on the bobbin 11. Yarn winding speed for line 12. Then, the yarn package diameter detection circuit 93 calculates the diameter of the yarn package 10 based on the rotation speed calculated by the calculation circuit 91 and the yarn winding speed calculated by the winding speed detection circuit 92 . The diameter of the yarn package 10 is calculated by the yarn package diameter detecting circuit 93 according to the calculated length of the yarn when the bobbin 11 rotates once.

Generally, when the yarn 12 is wound on the bobbin 11 at predetermined time intervals and wound to a predetermined yarn length, the tension strength fluctuates, thereby causing the yarn package 10 to be unevenly formed on the bobbin 11 . For this reason, the yarn winding machine according to the present invention is designed with a yarn winding device diameter detection circuit 93, which is used to calculate the yarn volume according to the rotation speed calculated by the calculation circuit 91 and the winding speed detection circuit 92. The winding speed calculates the diameter of the yarn package 10. The upper speed calculation circuit 91, the winding speed detection circuit 92 and the yarn package diameter detection circuit 93 constitute the entire yarn package diameter detection device 90.

When it is thus determined by the yarn package diameter detecting device 90 that the diameter of the yarn package 10 is still within its predetermined range, the leading end of the yarn 12 is cut by a suitable yarn cutter (not shown). If, on the other hand, it is determined by the yarn package diameter detection device 90 that the diameter of the yarn package 10 exceeds its predetermined range, the yarn package abnormal signal is output to the control circuit of the yarn winding machine to generate an alarm or similar signals. Therefore, the yarn package 10 that is determined to be irregular is found before the package 10 is contained in the carton, thereby overcoming the troubles that tend to be caused in the process of having the yarn package 10 contained in the carton.

The yarn winding machine according to the second embodiment of the present invention is so designed that by calculating the diameter of the yarn package 10 according to the rotation speed of the bobbin 11 and the winding speed of the yarn 12, the abnormal rotation condition of the bobbin 11 is rapidly detected. , As a result, troubles can be easily eliminated in subsequent processes such as the packaging process of the full yarn package 10.

A third embodiment of the yarn winding machine according to the present invention will be described in detail below with reference to the accompanying drawings.

The yarn winding machine shown in Figs. 6 and 7 has detection means for detecting the yarn wound on the friction roller.

In Figs. 6 and 7, reference numeral 101 denotes a yarn made of, for example, a synthetic fiber which is false-twisted and fed by a yarn drafting and false-twisting machine (not shown in the drawings). The shown yarn 101 is wound on a bobbin 102 by a winding machine after being guided by a guide rod 104 . The yarn winding machine comprises a stationary frame structure 110 with a pair of oscillating support arms 111 spaced apart from each other, a pair of bobbin holders 115 which rotate about their own axes and are each supported on each oscillating support arm 111. On, its own rotation axis extends towards the swing support arm 111, the bobbin holder moving device, not shown, is used to selectively move the bobbin holder 115 toward and apart from each other, and a friction roller 120, which has a 102 is an axis of rotation and has a peripheral surface 121 for frictional contact with the yarn 101 wound on the bobbin 102 .

The swing support arm 111 is designed to swing around its swing axis so that the bobbin 102 moves with the bobbin holder 102 relative to the friction roller 120 to a yarn winding position and a package disengagement position. position, the bobbin 102 is in frictional contact with the friction roller 120 and is driven to rotate by the friction roller 120 so that the yarn 101 is wound on it until the yarn 12 forms a full yarn package 103, and at the package release position , the bobbin 102 is out of frictional contact with the friction roller 120 so that the yarn package 103 is disengaged from the bobbin holder 111 . The swing support arm 111 is swung by the support arm swing device 116 to the yarn winding position and the package unwinding position in a manner similar to the general support arm swing device.

The bobbin holder 115 is selectively movable towards and away from each other with respect to the bobbin 102 to a bobbin holding position and a bobbin release position in which the bobbin 102 is held by the bobbin holder 115 and the bobbin The longitudinal ends of the tubes 102 are respectively engaged with the bobbin holders 115, and in the bobbin release position, the bobbins 102 are disengaged from the bobbin holders 115, and the longitudinal ends of the bobbins 102 are respectively disengaged from the bobbins 115. The bobbin 102 has an axis of rotation which is coaxial with the axis of rotation of the bobbin holder 115 when the bobbin 102 is held by the bobbin holder 115 . The friction roller 120 is designed to be driven by a drive motor 125 .

Between friction roller 120 and guide bar 104, be provided with a yarn traverse guide bar 127, this guide bar 127 is shown in a first position shown in solid line in Fig. 8 and a second position shown in dotted line in Fig. 8 The yarn 101 traverses between the first and second positions before being wound on the bobbin 102 and after being guided by the guide rod 104. The yarn traversing guide bar has a seam guide portion 127a with which the yarn 101 passing over the guide bar 104 engages.

The yarn winding machine also includes a detection device 130 for detecting that the yarn is abnormally wound on the friction roller 120 . The detection device 130 includes a light projector 131 positioned near the rubbing roller 120 to project light on the circumferential surface 121 of the rubbing roller 120, and a light receiver 132 positioned near the rubbing roller 120 and the light projector 131 to receive light. From the light projected by the light projector 131 and reflected by the yarn 101 wound on the friction roller 120, a control circuit 135 of the yarn winding machine and determining means, which form a part of the control circuit 135, so that according to the light receiver The amount of light received by 132 determines whether yarn 101 is wound on rubbing roller 120 or not.

The surface color of the rubbing roller 120 is not likely to reflect light from the surface 121 of the rubbing roller 120 . The yarn winding machine according to the present invention may include a rubbing roller 120 whose black surface is less likely to reflect light from the surface 121 of the rubbing roller 120 . The light projector 131 and the receiver 132 are housed in a common container 133 which is located in the vicinity of the rubbing roller 120 and is electrically connected to a detection circuit 134 forming part of a control circuit 135 . The detection circuit 134 is configured to output an electric signal so that light is projected on the circumferential surface 121 of the friction roller 120 and received by the light as the light is projected by the light projector 131 and reflected by the yarn 101 wound around the friction roller 120. The device 132 receives and inputs an electrical signal. The detection circuit 134 is designed to be connected with the determination device, and the determination device determines whether the yarn 101 is wound on the friction roller 120 according to the amount of light received by the light receiver 132 . The reason why the rubbing roller 120 is processed to have a black surface is that light is not easily reflected by the surface of the rubbing roller 120 to make it impossible to input electrical signals generated with light received by the light receiver 132 . In the case where the amount of light received by the light receiver 132 exceeds a predetermined value, effectively an electrical signal is not input to the detection circuit 134, and if the amount of light received by the light receiver 132 exceeds a predetermined value, an electrical signal is instead input. to the detection circuit 134 to generate an abnormal condition signal. The abnormal condition signal is input into the determining means of the control circuit 135 to determine normal and abnormal winding conditions. For this reason, the determination means of the control circuit 135 is provided to determine whether the yarn 101 is abnormally wound or not wound on the rubbing roller 120 according to the amount of light received by the light receiver 132 . According to the present embodiment of the yarn winding machine of the present invention, many coils of yarn are wound on the rubbing roller 120, and the predetermined value of the amount of light received by the light receiver 132 is set, which does not require the light receiver 132 to be sensitive to the receiver 132. The degree to which only one turn on the rubbing roller 120 is highly sensitive.

The yarn winding machine also includes a yarn cutter, not shown in the figure, adapted to cut the yarn 101 at a predetermined position on a traveling channel of the yarn 101, and the yarn 101 is fed into the bobbin through the traveling channel In 102, also comprise yarn cutter operating device, it forms a part of control circuit 135 and is used for operating the yarn cutter according to the abnormal condition signal from the determination device that forms part of detection circuit 134, so that when yarn 101 is abnormally wound on friction When the roller 120 is on the front end of the yarn 101, the yarn 101 that is abnormally wound on the rubbing roller 120 is cut off.

Yarn winding machines often encounter such a problem that the operator does not hook the front end of the yarn 101 onto the bobbin 102 before the yarn 101 starts winding on the bobbin 102, thus causing the front end of the yarn 101 to be very tight. It is possible to travel through the friction roller 120 and the bobbin 102 so as to wind on the friction roller 120 instead of the bobbin 102, since the yarn winding machine is not operated so that the leading end of the yarn is automatically hooked on the bobbin 102 to produce Similar question. In another case, if the yarn winding machine vibrates and impacts due to some external force applied to the yarn winding machine, it is likely that the yarn package 103 will immediately lose frictional contact with the friction roller 120, causing the yarn The wire 101 is wound on a rubbing roller 120 . The yarn 101 is initially wound directly on the rubbing roller 120 in a coarse mesh form shown by dotted lines in FIG. 8 , and then wound in a dense mesh form as the bobbin 102 rotates at a high speed. Finally, there may be a large number of yarn packages wound on the friction roller 120, which may cause the motor 125 for the friction roller 120 to stop due to its overload or cause the yarn package on the friction roller 120 to be disconnected from the adjacent friction roller 120. some parts collide.

Therefore, when the yarn winding machine is determined to be in an abnormal condition, that is, the yarn 101 is wound on the friction roller 120, the yarn cutting operation means forming a part of the control circuit 135 operates according to the abnormal condition signal from the determining means of the detection circuit 134. The yarn cutter cuts the front end of the yarn 101 from the yarn 101 abnormally wound around the friction roller 120 . When the yarn cutter is operated to cut the yarn 101, since the leading end portion of the yarn 101 cut from the yarn wound on the friction roller cannot be wound on the friction roller, the abnormal yarn package on the friction roller cannot be changed. thick so that it does not cause damage to the mechanical parts of the yarn winding machine.

On the other hand, when the yarn winding machine is determined to be in an abnormal condition where the yarn is wound on the friction roller 120, the control circuit 135 of the yarn winding machine thus stops the driving motor 125 so as not to drive the friction roller 120. If the yarn winding machine is provided with an alarm device such as a warning light and a siren, the operator can quickly realize the fact that the yarn 101 has been wound on the friction roller 120. It can therefore be appreciated that the yarn winding machine can easily avoid the aforementioned problems.

Therefore, the determination means of the control circuit 135 determines whether the yarn 101 is abnormally wound on the friction roller 120 according to the amount of light received by the light receiver 132, and is operated by the yarn cutter when a predetermined amount of the yarn 101 is wound on the friction roller 120. The yarn cutter is operated to cut the yarn from the yarn wound on the friction roller 120 . Thus, the yarn winding machine is capable of performing an automated doffing operation comprising hooking the leading end of the yarn 101 onto an annular groove of the bobbin 102 so that the leading end of the yarn 101 is caught by the annular groove of the bobbin 102 Yarn hooking step and full yarn package 103 is disengaged from bobbin holder 115 so that a bobbin changing step with a successive empty bobbin 102 is replaced full yarn package 103.

In addition, when multiple turns of the yarn 101 , that is, a predetermined amount of the yarn 101 is wound around the friction roller, the detection device 130 is activated to generate a signal to cut the yarn 101 . As a result, detection of the yarn 101 wound around the rubbing roller 120 does not cause an erroneous operation, thus enabling the detection device 130 to be manufactured at a relatively low cost.

A fourth embodiment of the yarn winding machine of the present invention will be described below with reference to FIG. 9, in which only the main constituent elements or parts forming a part of the yarn winding machine are shown, and omitted to avoid duplication with the above description. Make up the other remaining parts of the yarn winding machine. The structural parts in Fig. 9 are denoted by the same reference numerals as the parts forming the second embodiment of the yarn winding machine shown in Figs. 6 and 7 .

The winder includes a rubbing roller 140 whose peripheral surface 141 is metal-plated so that light is reflected by the peripheral surface 141 of the rubbing roller 140 . The combination of the light projector and the receiver 130 is arranged at an angle relative to the rotational axis of the friction roller 140 in such a way that the light projected from the light projector 131 is reflected by the circumferential surface 141 of the friction roller 140 to exit the light projection Therefore, the light from the light projector 131 is not received by the light receiver 132 as shown by the solid arrow in FIG. 9 . When the predetermined number of turns of the yarn 101 is wound on the rubbing roller 140 so that the light projected from the light projector 131 is reflected and scattered by the yarn 101 wound on the circumferential surface 141 of the rubbing roller 140, thus the light projected from the light projector 131 The light can be received by the light receiver 132, as shown by the dotted arrow in FIG. 9 . Light rays scattered and reflected from the yarn 101 wound on the rubbing roller 140 result in a portion of the light being received by the light receiver 132 . In the fourth embodiment of the yarn winding machine, the light projector 131 and the light receiver 132 are arranged such that a predetermined amount of light reduced from the total amount of light projected by the light projector 131 is received by the light receiver 132 . Also, a predetermined amount of light received by the light receiver 132 is detected by the detection circuit 134 to stop the rubbing roller 140 .

In the fourth embodiment of the yarn winding machine, even if the yarn has been wound on the friction roller 140, the operator can quickly deal with the abnormal situation without damaging the mechanical parts of the yarn winding machine. Therefore, it should be understood that the yarn winding machine can easily avoid such problems in the same manner as previously described.

According to the present invention as described above, the yarn winding machine is simple in structure and low in production cost. The rotation condition of the friction roller 140 is detected by the wire winding machine with high precision and high reliability. Furthermore, the yarn winding machine according to the present invention enables the operator to quickly realize that the yarn 101 has been wound on the friction roller 140, thus causing no damage to the mechanical parts and elements of the yarn winding machine and at the same time preventing the yarn The productivity of the wire package 103 decreases.

In the foregoing various embodiments of the present invention a pair of support arms 2, 3 and 111 are provided which are pivotally mounted on a stationary frame structure 1 and 110 and which rotatably support the bobbin holders 5, 6. and 115, however, according to the present invention, the pair of support arms may be replaced by a support arm that rotatably supports a bobbin holder mounted in a cantilever fashion on a stationary frame structure.

In the foregoing description a preferred embodiment of the yarn winding machine constructed in accordance with the present invention has been described, but various modifications can be made to the invention within the spirit and scope of the invention as set forth in the following claims and fixes.

Claims (10)

1. A yarn winding machine for winding yarn (12) on a bobbin (11) to form a yarn package (10) on said bobbin (11), comprising a A stationary mechanism (1) of the support arms (2, 3), a bobbin holder (5, 6), has its own axis of rotation and is supported on said support arms (2, 3), its own axis of rotation towards The support arms (2, 3) extend, and the bobbin (11) has an axis of rotation which is aligned with the bobbin (11) when the bobbin (11) is held by the bobbin holder (5, 6). The rotation axes of the bobbin holders (5, 6) are coaxial, and a friction roller has a rotation axis parallel to the rotation axes of the bobbin holders (5, 6) and is wound on the The yarn (12) on the bobbin (11) is in frictional contact until the yarn (12) forms a full yarn package (10), the bobbin holders (5, 6) and the friction rollers (20) are respectively moved to move the bobbins (11) relative to the friction rollers (20) together with the bobbin holders (5, 6) to a winding position and a package release position, In this winding position the bobbin (11) is in frictional contact with the friction roller (20) and is driven to rotate by the friction roller (20) so that the yarn (12) is wound thereon, and In the package release position, the yarn package is out of frictional contact with the friction roller (20) to release the yarn package (10) from the bobbin holders (5, 6) . It also includes: a bobbin rotation number detection device (40) for detecting the rotation number of the bobbin (11), and the rotation number detection device (40) includes a magnetic element (41), which is fastened to the At a predetermined position on the circumferential portion of the bobbin holder (5, 6) and has an annular passage, the magnetic element (41) moves along with the rotation of the bobbin holder (5, 6) on the annular passage Rotate, a detection element (42), fixedly mounted on the support arms (2, 3) and opposite to the annular channel of the magnetic element (41) to detect the magnetic force lines of the magnetic element (41) and A signal corresponding to the number of revolutions of the bobbin (11) is output. 2. The yarn winding machine according to claim 1, further comprising a detection circuit ( 50). 3. The yarn winding machine according to claim 1, further comprising braking means (60) for moving said yarn package (10) together with said bobbin holders (5, 6) to braking said bobbin holders (5, 6) when out of frictional contact with said friction roller (20), and comprising brake condition checking means for checking said The braking condition of the braking device (60), so that when the bobbin holder (5, 6) is braked by the braking device (60) within a predetermined time frame, the bobbin (11) is not Output a braking abnormal signal when stopped. 4. Yarn winding machine according to claim 1, further comprising calculating means for calculating the rotational speed of said bobbin holders (5, 6) based on said output signal from said detecting element (42) ( 91), a winding speed detection device (92) and a yarn package diameter detection device (93) for detecting the yarn winding speed of the yarn (12) wound on the bobbin (11) , used to calculate the diameter of the yarn package (10) according to the rotation speed calculated by the calculation device (91) and the yarn winding speed detected by the winding speed detection device (92) , outputting a yarn package diameter abnormal signal when the diameter of the yarn package (10) formed on the bobbin (11) exceeds a predetermined range of the yarn package diameter. 5. A yarn winding machine for winding yarn on a bobbin (11) to form a yarn package (10) on said bobbin (11), comprising a pair of oscillating supports A stationary frame structure (1) of arms (2, 3), the pair of oscillating support arms (2, 3) spaced from each other and with their own swing axes, a pair of bobbin holders (5, 6) with their own rotating shaft, each bobbin holder is rotatably supported on each of said swing support arms (2, 3), its own rotation axis extends towards said swing support arms (2, 3), said bobbin tube (11) has an axis of rotation coaxial with said axis of rotation of said bobbin holder (5,6) when said bobbin (11) is held by said bobbin holder (5,6), a friction a roller (20) having an axis of rotation parallel to the axis of rotation of said bobbin (11) and in frictional contact with said yarn (12) wound on said bobbin (11) until said yarn (12 ) to form a full yarn package (10), the swing support arm (2, 3) swings around its swing axis to make the bobbin (11) relative to the friction roller (20) and the bobbin holder ( 5, 6) move together to a winding position and a package release position, in which the bobbin (11) is in frictional contact with the friction roller (20) and is held by the friction roller (20) ) is driven to rotate so that the yarn (12) is wound on it, and in the package disengagement position, the full yarn package (10) is out of frictional contact with the friction roller (20) so that the said yarn package (10) is disengaged from said bobbin holder (5, 6), Also includes: a bobbin rotation number detection device (40) for detecting the rotation number of the bobbin (11) to output a signal corresponding to the rotation number of the bobbin (11), brake device (60), used to select when the bobbin (11) is out of frictional contact with the friction roller (20) by the swing support arms (2, 3) braking the bobbin holders (5, 6), bobbin holder moving means (15) for selectively moving said bobbin holders (5, 6) towards and away from each other relative to said bobbins (11) to a bobbin holding position and a bobbin release open position, in this holding position, the bobbin (11) is held by the bobbin holder (5, 6), and the longitudinal ends (11a, 11b) of the bobbin (11) are respectively connected to the bobbin The tube holders (5, 6) are engaged, and in the bobbin release position, the bobbins (11) are disengaged from the bobbin holders (5, 6), and the longitudinal ends of the bobbin tubes (11) (11a, 11b) are respectively disengaged from said bobbin holders (5, 6). braking condition determining means for checking the braking condition of the braking device (60) based on the output signal from the bobbin rotation number detecting means (40) so that the bobbin holder (5, 6) is operated by Whether the bobbin (11) stops is determined within a predetermined time range after the brake device (60) brakes. a package release control device for controlling the bobbin holder moving device (15) according to the output signal from the braking condition determination device (50), when the swing support arms (2, 3) swing away from the friction Rollers (20) selectively release said bobbins (11) from said bobbin holders (5, 6) when they reach said package release position of said oscillating support arms (2, 3). 6. Yarn winding machine as claimed in claim 5, wherein said revolution detection means (40) comprises a magnetic element (41) fastened to one of said bobbin holders (5,6) A predetermined position on the circumferential portion of the device and has an annular channel on which the magnetic element rotates with the rotation of the bobbin holder (5, 6), and a detection element, which is fastened to the On one of the supporting arms (2, 3) and opposite to the annular channel of the magnetic element (41) to detect the magnetic field lines of the magnetic element (41) and output the rotation speed of the bobbin (11) Quite a signal. 7. A yarn winding machine for winding yarn (101) on a bobbin (102) to form a yarn package (103) on said bobbin (102), comprising a A stationary frame structure (110) of the support arm (111), a bobbin holder (102) with its own axis of rotation and supported on said support arm (111) with its own axis of rotation towards said support Arm (111) extends, said bobbin (102) has an axis of rotation which is aligned with said bobbin holder (115) when said bobbin (102) is held by said bobbin holder (115) coaxial with said axis of rotation, a friction roller (120) having an axis of rotation parallel to said axis of rotation of said bobbin holder (115) and with said yarn wound on said bobbin (102) The thread (101) rubbing contact until the yarn (101) forms a full yarn package (103), the bobbin holder (102) and friction roller (120) move respectively to make the bobbin (102) Relative to the friction roller (120) moves together with the bobbin holder (102) to a winding position and a package disengagement position, in the winding position, the bobbin (102) and the friction The roller (120) is kept in frictional contact and rotated by the friction roller (120) to wind the yarn (101) thereon, while in the package disengagement position, the yarn package (103) and said friction roller (120) is out of frictional contact to release said yarn package (103) from said bobbin holder (102), The yarn winding machine includes a detection device (130) for detecting that the yarn (101) is abnormally wound on the friction roller (120), and the detection device includes: a light projector (131) located near said friction roller (120) to project light onto the peripheral surface (121) of said friction roller (120), a light receiver (132) located near the friction roller (120) and the light projector (131) to receive the light projected from the light projector (131) Said yarns (101 ) on rolls (120) reflect light. a determining device (134), configured to determine whether the yarn (101) is wound on the friction roller (120) according to the amount of light received by the light receiver (132), so that when the predetermined amount of yarn An abnormal condition signal is output when the wire (101) is wound around the friction roller (120). 8. The yarn winding machine according to claim 7, wherein the surface of said friction roller (120) is processed so as not to be easily received by said surface of said friction roller (120) towards said light The device (132) reflects light. 9. The yarn winding machine as claimed in claim 7, wherein said light receiver (132) is arranged at an angle with respect to the axis of rotation of said friction roller (140) in such a manner that, from said The light projected by the light projector (131) is reflected by the circumferential surface (141) of the friction roller (140), and its direction is away from the light receiver (132), so the light from the light projector (131) is not easy to received by the light receiver (132). 10. The yarn winding machine according to claim 7, further comprising a yarn cutter adapted to cut the yarn (101) at a predetermined position of the yarn traveling path, said yarn (101) passing through said Said channel is fed to the bobbin (102), and a yarn cutter operating device (135) is used to operate the yarn cutter according to the abnormal condition signal from said determining device (134), so that when said yarn ( 101) Cutting the front end of the yarn (101) from the yarn (101) abnormally wound on the friction roller (120 or 140) while winding on the friction roller (120 or 140).

Images