JPS6290332A - Automatic doffing device - Google Patents

Abstract

PURPOSE:A doffing device capable of carrying out doffing of full bobbins, feeding of empty bobbins, threading, etc., by equipping a truck traveling along a stand of a spinning machine with a full bobbin spindle detecting means, a doffing means and a threading means. CONSTITUTION:A truck 13 traveling along in the longer direction of a stand of a spinning machine is equipped with full bobbin detecting means (e.g., a detector for detecting lightening of a lamp 29 when a given amount of yarn is wound around a bobbin 50 and a cradle 8 to support it reaches a given position 30, means 24-28 to dough a full package 51, a means to feed empty bobbins and means 33 to thread an empty bobbin attached to he cradle with yarn and to form bunch and tail.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic doffing device for a spinning machine that directly winds yarn spun from a yarn forming device.

Generally, in a spinning machine in which a large number of spun knits are installed in parallel, once a preset amount of yarn has been wound, the yarn is moved along the longitudinal direction of the spinning machine. At the same time, a pre-prepared bobbin is supplied to the doffing device (in the 0th stage) to the bobbin supply device p. J
It is something that When the bobbin is fed to the winding section,
The suction nozzle of the splicing cart installed in parallel with the doffing device sucks the yarn spun from a yarn forming device such as an air injection nozzle and the I-thread yarn pulled out from the bobbin, and splices the yarn. The yarn is conveyed to a device and spliced, and the winding section is started to wind the yarn spun from the yarn formation 'JA stomach onto a bobbin.

An I/j #t4 machine equipped with a doffing device having such a configuration is described in, for example, Japanese Patent Laid-Open No. 15524/1983.

However, in such a doffing device, it is necessary to prepare a bobbin for winding the yarn, and also a winding machine for winding the yarn around the empty bobbin and a splicing device for splicing the yarn. is necessary.

Further, there is a problem that the thread quality of the thread wound on the bobbin and the thread wound on the bobbin is different, which causes uneven dyeing and uneven weaving in the post-processing culm.

The present invention solves the above-mentioned problems and provides a doffing device that can reliably perform operations such as doffing a full package, feeding an empty bobbin, threading, bunching, and forming a tail using a compact device. This is what we provide.

(Means for Solving the Problems) That is, the present invention provides a spinning machine that can run freely along the longitudinal direction of a spinning machine that directly winds yarn spun from a plurality of yarn forming devices onto each winding device. A trolley provided with a means for detecting a full package, a means for doffing a full package, a means for supplying an empty bobbin, a means for threading the spun yarn on the empty bobbin, bunching, and To provide an automatic doffing device equipped with a means for forming a tail.

(Example) The configuration of an automatic doffing device of the present invention will be explained based on the drawings.

1 is a gear end, and 2 is an A end.

3 is a machine stand installed between the gear end 1 and the A end 20. 4 is F [1 in I・11-ra, 1′! It is a device from/to a canter roller, a back [1-ra, etc.], and is adapted to draft the kl&IiH bundle supplied thereto. Reference numeral 5 denotes a yarn forming device composed of a suction or false twisting nozzle, a co-rotating rotor, or the like, and is adapted to form a spun yarn from a fiber bundle. Reference numeral 6 denotes a drawer row, which is composed of a driving rotary eye and a nip shorter than the nip [1-ra], and is configured to convey the yarn spun from the yarn forming device 5 at a predetermined speed. It has become. Reference numeral 7 denotes a rotating drum having a thread guide groove on its outer circumferential surface, which traverses the thread and rotates the bobbin 50. 8 is a cradle rotatably mounted with a holder 9 which has a thread locking portion 9' and holds a bobbin 50, and when it rotates about a shaft 10, the holder 9 is first held by a pressure mechanism. The attached bobbin 50 is brought into contact with the rotating drum 7 with a predetermined blood pressure. Reference numeral 11 denotes a separation mechanism disposed near the rotating drum 7;
and the package to separate the package from the rotating drum. 12 is a rail installed along the machine base 3, on which the doffing device 13 runs. 15 is a frame forming the doffing device 13, wheels 14 are attached to the lower end of the frame, and the frame is driven by a drive device (not shown) and stopped at a predetermined position. - 16 is a first needle thread suction pipe, which is rotatably mounted on the frame 15 and is adapted to suck the thread spun from the thread forming device 5; Also, the first needle thread suction pipe 1
6 is provided with a slit 16' along the longitudinal direction of the pipe, and the yarn sucked into the pipe moves in a direction perpendicular to the longitudinal direction of the pipe and exits the pipe through the slit 16'. It looks like this.

Reference numeral 17 denotes a second needle thread suction pipe, which is attached to the frame 15 so as to move in an inclined state, and is connected to the first needle thread suction pipe 16.
The yarn is sucked from the outlet of the yarn storage device 23 and transported to the yarn storage device 23 or the yarn transfer position. Reference numeral 18 denotes a thread hooking arm having a bunch-forming yarn locking portion 18', which is rotatably mounted on the frame body 15 and is connected to the pull-out roller 6 and the second arm.
The yarn running between the upper thread suction pipes 17 is hooked and engaged with the yarn locking portion 9' of the jack 9 of the cradle 8. Reference numeral 19 denotes a thread extrusion member that is movably attached to the arm 18, and the thread hook 18
′ is pushed out and removed. Reference numeral 20 denotes a lower thread suction pipe, which is rotatably attached to the frame 15 so as not to pull out the thread from the package 51. 21 is a bobbin thread scooping arm;
It is rotatably attached to the package 51 and the thread suction pipe 20 and scoops up the thread between the package 51 and the bobbin thread suction pipe 20 and conveys it to the thread splicing device 22. The yarn splicing device M 22 splices the 11 and 2 yarns from the yarn forming device 5 and the bobbin yarn pulled out from the package 51 when a yarn breakage occurs. Yarn storage device 23
is connected to a suction device (not shown) to suck the yarn and apply a constant tension during the splicing operation. 24 is the cradle operation arm\, and the cradle 8
is pushed down to separate the package from the rotating drum, and the cradle 8 is pushed outward in the longitudinal direction of the bobbin 50 to open it and the bobbin 50 can be attached or detached. Reference numeral 25 denotes a drive roller for the package 51 mounted on the frame 26, which contacts the package 51 during the yarn splicing operation and rotates in the opposite direction to pull out the yarn for splicing.
After the yarn is spliced, the package 50 is rotated at high speed to wind up the yarn accumulated during the splicing.

Reference numeral 27 denotes a chuck attached to the cylinder 280 rotor, which grips an empty bobbin and conveys and supplies it to the holder 9 of the cradle 8. The cylinder 28 is attached to a frame 26 on which a drive roller 25 is mounted and is rotatable. Further, the chuck 27 can be configured to grip the bobbin by forcibly opening and closing its claws using a driving device, or can be configured to grip the bobbin by two thin plates using elastic force.

Reference numeral 29 denotes a first lamp, which is turned on based on a full winding signal or a thread trimming signal.

30.31 is a first unit attached to a predetermined position of the frame body 15;
This is a second detector, and when it detects lighting of the first lamp 29, it sends an activation signal to a control device (not shown). Further, when the first detector 30 is activated, the brake is applied to decelerate the vehicle, and when the second detector 31 is activated, the drive device is controlled so as to instantly stop the vehicle at a predetermined position. There is.

Reference numeral 32 denotes a second lamp attached to the frame 15, which is used when replacing the full package 51 with an empty bobbin 50 and restarting yarn winding, or when winding the yarn immediately after yarn breakage. When restarting, the light is turned on based on a signal that activates the draft device 4 and yarn forming device 5 to start spinning yarn. A third detector 33 is installed on the machine base 3, and when it detects the lighting of the lamp 320, it sends a signal to the III till device (not shown) to start the draft device 4, yarn forming device 5, etc. 34 is a bobbin supply box for storing a plurality of empty bobbins 50, and is installed below the frame 26. 35 is a receptacle for the package 51 installed below the cradle 8. It is a stand.

Note that the lower thread suction pipe 20, lower thread scoop-V arm 21, thread splicing device M22, yarn storage device 23, drive roller 25, etc. used for the thread splicing operation can be installed as appropriate.

-F Doffing operation using the automatic doffing device configured as described above will be explained.

When a preset amount of yarn is wound onto the bobbin 50 of the cradle 8 and the yarn is fully wound, a control device (not shown)
A full wind signal is transmitted from the first lamp 29, and the first lamp 29 is turned on. At the same time, the draft device 4 and the yarn forming device 5 are stopped to stop spinning the yarn, and at the same time, the separation mechanism 11 is activated to separate the full package 51 from the rotating drum 7 and the winding operation is stopped. (Figure 4-1). The automatic doffing device 13, which is running periodically in this state, moves to the position of the full weight, and when the first detector 30 detects the lighting of the first lamp 29, it is decelerated, and then the second When detected by the detector 31, it is stopped at a predetermined doffing position.

In this state, the doffing operation is started.

First, a doffing operation start signal is sent from a control device (not shown), and the cradle operating arm 24 is activated to come into contact with and push down the cradle 8 (FIG. 4-2). When the cradle 8 is moved to the doffing position and covered, one side of the cradle is moved outward in the longitudinal direction of the bobbin, the full package 51 is removed from the holder 9, and the receiver is dropped onto the stand 35 (Figure 4-3). . On the other hand, during the running operation of the automatic doffing device F713, the cylinder 28 is activated and the doffing rod is projected, and the empty bobbin 50 in the bobbin supply box 34 is gripped by the chuck 27. Therefore, when the package 51 is taken out, the frame 26 is activated and the cylinder 28 is rotated from a vertical position to a substantially horizontal position that supplies the bobbin, and the cylinder 28 is activated and the rod is protruded. The bobbin 50 held by the hook 27 is placed in the cradle 8
The boulder is moved to the 9th position (Fig. 4-4). Next, the cradle operating arm 24 is operated to move the cradle 8 inward in the longitudinal direction of the bobbin, and when the empty bobbin 50 is held by the holder-10-9, the cylinder 28
is activated, the chuck 27 is retracted and returned to the standby position, and the frame 26 is rotated to move the cylinder 28 to the vertical position. When the chuck 27 retreats during this operation, since the bobbin 50 is held by the holder 9, the chuck 27 opens outward and the bobbin 50, which has been gripped by elastic force, is released from the chuck 27.

When the empty bobbin 50 is held in the holder 9 by the above operation, the cradle operating arm 24 and the separation mechanism 1
1 returns to the standby position, the empty bobbin 50 comes into contact with the rotating drum 7 (FIGS. 4-5), and the doffing operation is completed.

Next, I will explain the operation of the thread hook.

The full package 51 is doffed by each of the above-mentioned operations,
When the empty bobbin 50 is supplied, the second lamp 32 is turned on based on the yarn winding start signal, and when this is detected by the third detector 33, the draft device H4, yarn forming device 5, etc. are started. As the yarn is spun, the first needle thread suction pipe 16 and the second needle thread suction pipe 17 are operated to
The suction port of the first yarn suction pipe 16 is moved to the spinning section of the yarn forming device 5, and the suction port of the second needle thread suction pipe 17 is moved to the outlet section of the ff1l needle thread suction pipe 16, and the spun yarn is Aspirate the stripes (Figure 5-1). Subsequently, when the second needle thread suction pipe 17 that has sucked the yarn is rotated to the yarn passing position,
The yarn passes through the slit 16' of the first upper thread suction pipe 16 and moves out of the pie 1, and is moved to the yarn transfer position while being brought into contact with the drive roller 6. . The yarn that came into contact with the above-mentioned drive rotating roller is the second thread.
By moving the single yarn suction pipe 17 in an inclined state, the yarn is nipped between the nip rollers (FIG. 5-2). Then, when the second needle thread suction pipe 17 moves to the yarn passing position, the arm 18 rotates and the thread hook is positioned between the suction port of the second needle thread suction pipe 17 and the pull-out roller 6. is held and conveyed to the holder 9 of the cradle 8, and hooked on the thread hook catcher claw 9' (Figures 5-3 and 6-1). When the bobbin 50 is rotated in this state, the yarn is stopped by the yarn lock NS"l.
The thread is wound around the end of the bobbin 50 with the thread path regulated by 8' to form a bunch (Figs. 5-4 and 6).
2), the thread on the side being sucked by the second needle thread suction pipe 17 is cut. Next, the yarn pushing member 19 is operated to release the yarn engaged with the yarn locking member 18' (FIGS. 5-5 and 6-3). Then, the yarn moves toward the center of the bobbin due to its own tension, forming a tail, and then engages with the yarn guide groove of the rotating drum 7 and is wound up while being traversed (Figures 5-6). . After releasing the thread, the arm 18 of the thread hook returns to the special position, and the thread hook ends its operation.

(Effects of the Invention) As described above, the present invention provides a trolley provided movably along the longitudinal direction of a spinning machine machine for directly winding yarn spun from a plurality of yarn forming devices onto each winding device. a means for detecting a full weight, a means for doffing a full package, a means for supplying an empty bobbin, and a means for threading the spun yarn onto the empty bobbin to form a bunch and a tail. (The following effects can be achieved.)

(1) The first step is to move the doffing device to a predetermined position.
Operations such as doffing of packages, feeding of empty bobbins, and threading can be performed.

(2) Since there is no need to prepare a bobbin with the thread wound around it in advance, a winder for winding the thread is not necessary.

(3) Since yarn splicing work is not required in the doffing operation, the doffing work time can be shortened.

(4) Since the yarn forming the bunch and tail is the same as the winding yarn, post-processing can be performed without uneven dyeing or uneven weaving in the culm.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing one embodiment of a spinning machine equipped with a doffing device of the present invention. FIG. 2 is an enlarged view taken along arrow 7 in FIG. 1. FIG. 3 is a view taken along the Y arrow in FIG. 2. FIG. 4 is a schematic diagram showing the doffing operation. FIG. 5 is a schematic diagram showing the operation of the thread hook. FIG. 6 is a schematic diagram showing details of the operation of the thread hook. 3: Machine base 4 Drafting device 5: Yarn forming device 6: Pulling roller 7: Rotating drum 8: Cradle 9: Holder 11: Separating mechanism 13: Doffing device d 15: Frame 16: First needle thread suction Pipe 17: 2nd-1 yarn suction pipe 18: Yarn hook is arm 19: Yarn extrusion member 26: Frame 27: Chuck 28 Niji cylinder 29: First lamp 30: First detector 31: Second detector 32 : 2nd lamp 33: 3rd detector 34: Bobbin supply box 35: Applicant for the receiver Toshi Co., Ltd. Toray Engineering Co., Ltd.

Claims (1)

[Claims] A means for detecting a full spindle is provided on a cart movable along the longitudinal direction of a spinning machine machine that directly winds yarn spun from a plurality of yarn forming devices onto each winding device. means for doffing the rolled package; and means for supplying empty bobbins;
An automatic doffing device characterized by being equipped with means for threading the spun yarn onto the empty bobbin to form bunches and tails.