JPH01282370A - Weft preparing device in shuttle-less weaving machine - Google Patents

Abstract

PURPOSE:To facilitate weft preparing operation by equipping a first switch to control a cutting blade at a position apart a given length from the tip of a main nozzle, driving of a stopping member and operation of a blow nozzle in an interlocking way and a second switch to link and to regulate both means of winding of weft and taking up of weft. CONSTITUTION:When mistake of weft feed occurs, a first switch S1 is operated, a stopping member 10 is moved to a release position, a solenoid valve is opened, compressed air is jetted from a blow nozzle 12, weft Y is reeled from a length measuring drum 5 and guided through a main nozzle 2 to a weft taking up means. Then the first switch S1 is reoperated, the stopping member 10 is transferred to an engaging position, a second switch S2 is operated, a yarn winding pipe 8 is rotated and the weft Y is wound. Further a motor 16 is driven, the weft Y connected to the main nozzle 2 is stretched and the weft is automatically cut by a cutting blade 23 at a given position from the tip of the main nozzle 2 so that the weft Y on the length measuring drum 5 is automatically discharged and length of the weft from the tip of the main nozzle 2 is always of suitable length for weft feed.

Description

[Detailed Description of the Invention] [Industrial Application Field J] The present invention relates to a weft preparation device for shuttleless looms such as air jet looms and water jet looms. a weft length measuring and storage device having a driven thread winding tube; and a weft handler V which acts to pull and handle the weft from the side of the warp opening in a state where the defective weft that has been inserted incorrectly is connected to the main nozzle. a blow nozzle disposed near the tip outlet of the main nozzle for guiding the weft threads connected to the main nozzle to the weft take-up means; and a weft processing device having
The present invention relates to a weft preparation device for one machine.

[Conventional technology] Shuttleless looms can achieve much higher productivity than shuttled looms, so there has been a noticeable trend in their adoption in recent years. The machine is equipped with a weft processing device that automatically removes the incorrectly inserted weft (hereinafter referred to as defective weft) from the warp opening when a weft insertion error occurs. On the other hand, as a weft length measuring and storage device that measures and temporarily stores a predetermined length of weft required for each weft insertion, a thread winding tube rotates along the drum surface on a length measuring drum that is in a stationary state. proposed a device in which the weft thread supplied from the weft bobbin was wound and the drawing of the weft thread wound around the circumferential surface of the length measuring ram was controlled by a locking body operated by an electromagnetic actuator (
For example, Japanese Unexamined Patent Publication No. 57-29640, Utility Model Application No. 62-1
06976), has also been implemented. If a yarn feeding error occurs in a shuttleless loom equipped with this type of weft length measuring and storage device, the weft wound on the length measuring drum is unwound and then re-wound by a predetermined amount using the yarn winding tube. At the same time, it is necessary to carry out a weft preparation work in which the tip of the weft protrudes a certain length from the tip of the main nozzle. In addition to the yarn feeding error vI, there is also the necessity of performing weft yarn preparation work when starting the operation of the loom. Conventionally, this weft yarn preparation work involves moving the locking body to the release position, unwinding the weft wound on the measuring drum, and then blowing the weft connected to the main nozzle from a blow nozzle installed near the main nozzle tip outlet. The weft threads were blown up by the airflow and cut by hand.

In a shuttleless loom with a multi-color weft insertion function, not only is it necessary to perform the weft preparation work for each color, but also if a weft insertion error occurs during machine operation, wefts other than the weft insertion error must be performed. It is necessary to perform weft preparation work for other weft threads, and it takes time to restart the machine. To solve this problem, Japanese Patent Application Laid-Open No. 62-231055 introduces multicolor weft insertion! ! When a weft insertion error occurs in the fluid injection type aW1, the machine is stopped with the currently inserted weft connected from the main nozzle to the woven fabric. Fluid is injected from all the main nozzles that are not inserted into the weft, and the weft yarns in the weft storage device are ejected toward the warp opening, and then all the weft yarns connected from the tip of each main nozzle to the warp opening are moved to the tip side of the main nozzle to weft the weft yarns. A method is disclosed in which, after being captured simultaneously by a removal device, the weft yarn is forcibly pulled out from the warp opening and the remaining yarns in all the weft storage devices are removed, and then the weft yarn is wound in a layered manner.

[Problem to be Solved by the Invention 1] When performing weft yarn preparation work, if the weft yarns connected to the main nozzle are manually cut, the length from the main nozzle tip will not only be uneven, but also fabric defects are likely to occur. ,It takes time and effort. In particular, this inconvenience becomes more noticeable in a loom having a multi-color weft inserting function. On the other hand, in the method disclosed in Japanese Patent Application Laid-Open No. 62-231055, the weft is self-cut by the weft removal device, but the weft stored in the weft storage device is injected into the warp opening by a main nozzle at one end. Therefore, there is a problem in that the ejected weft threads tend to get caught in the warp threads, making it difficult to remove the weft threads.

The present invention has been made in view of the above-mentioned problems, and its purpose is to automatically discharge the weft yarn on the weft length measuring and storage device by using the weft yarn processing device equipped on the J1 machine, and to A shuttleless sk that can self-help cut the weft at a predetermined length protruding from the tip.
An object of the present invention is to provide a weft yarn preparation device in i.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a weft length measuring and storage device having a locking body actuated by an electric signal and a thread winding tube driven by an electric motor; A weft take-off means acts to pull out the weft from the side of the warp opening while the defective weft that has been inserted is connected to the main nozzle, and an outlet at the tip of the main nozzle to guide the weft connected to the main nozzle to the weft take-off means. A cutting blade fixed at a predetermined position capable of engaging with the weft thread connected from the main nozzle to the weft thread take-up means; , a first drive unit that interlocks and drives a drive device that operates the locking body and a solenoid valve that operates the pro nozzle;
and a second switch for driving the electric motor and the driving device for the weft yarn taking-off means in conjunction with each other.

[Operation] When the device of the present invention operates the first switch to move the locking body to the release position, the engagement state between the weft wound around the measuring drum and the locking body is released. At the same time, the solenoid valve is released and compressed air is injected from the blow nozzle.
The weft yarn unwound from the length measuring drum is guided to the weft yarn take-up means through the main nozzle. Next, the first switch is operated again to place the locking body in the engagement position, and then the second switch is operated to rotate the yarn winding tube and start winding the weft yarn. is driven to take off the weft thread connected to the main nozzle, and at this time, the weft thread on the length measuring drum engages with the locking body to be pulled out from the length measuring drum, and the weft thread is connected from the tip of the main nozzle to the weft thread take-up means. The weft is pressed against the cutting blade and automatically cut at a predetermined position from the tip of the main nozzle.

[Example 1] An example embodying the present invention will be described below with reference to Fig. 1.2. As shown in Fig. 1, a main nozzle 2 for inserting the weft is fixed to one end of the slay 1, and a reed 3 having a function of guiding the weft Y is installed in front of the main nozzle 2. There is. Weft yarn Y supplied from weft length measuring and storage device 4
is guided into the main nozzle 2, and is inserted into the weft guide passage (not shown) of the reed 3 together with the fluid jetted from the main nozzle 2 in synchronization with the weft insertion timing.

The weft length measuring and storage device 4 is driven by an electric motor 6 which is independent from the motor for driving the length measuring drum 5.1 and which measures the weft Y supplied from the yarn feeding bobbin 7. The yarn winding tube 8 is provided to be wound on the long drum 5, and a locking body 10 is actuated by a solenoid 9 as a driving device to control the withdrawal of the weft yarn Y wound on the length measuring drum 5. The electric motor 6 and the solenoid 9 are driven in synchronization with the operation of the m machine by a control signal from the control device 11.
J Siri is controlled. Further, the weft length measuring storage device 4 includes a locking body release button S1 as a first switch for operating the solenoid 9 independently of the operation of the loom, and an electric motor 6.
A winding button $2 is provided as a second switch for driving the machine independently of the operation of the machine.

A blow nozzle 12 is mounted on the sleigh 1 below near the tip outlet of the main nozzle 2, and above the blow nozzle 12, an inlet part faces the spout 12a of the blow nozzle 12, and an outlet part 13a opens to the side. A guide pipe 13 is provided that extends in the same direction. Further, when the slay 1 is stopped at a crank angle of approximately 180°, a suction vibrator 15 that generates a suction action by the drive of the blower motor 14 is located above the slay 1, and its inlet portion 15a is connected to the outlet portion of the guide pipe 13.
It is disposed facing 3a. Guide pipe 1
A drive roller 17 driven by a motor 16 is provided between the outlet portion 13a of the suction pipe 15 and the inlet portion 15a of the suction pipe 15.
A pressure roller 19 is disposed and is movable between an active position where it is pressed against the drive roller 17 by an air cylinder 18 and a retreat position where it is spaced apart from the drive roller 17. The blow nozzle 12 is connected to a pressure air supply tank 21 via a solenoid valve 20, and the air cylinder 18 is connected to a pressure air supply tank 21 via a solenoid valve 20.
2 to a pressurized air supply tank 21.

The blower motor 14, motor 16, solenoid valve 20.22
is driven and controlled based on the signal from the control device 11 when a weft insertion error occurs, and the weft yarn Y for one pick is injected from the main nozzle 2 during the inertial rotation of the machine after the weft insertion error occurs, and is passed through the guide pipe 13. The defective weft yarns are guided to the suction pipe 15 and are pulled out from within the warp opening by the action of the double eyelets 17 and 19. The driving roller 17, the pressing roller 19, etc. constitute a weft take-off means.

A cutting blade 23 is fixed at a predetermined position where it can engage with the weft yarn Y extending from the main nozzle 2 through the guide pipe 13 to the suction vibrator 15. Further, the solenoid valve 20 that controls the operation of the blow nozzle 12 and the blower motor 14 can be driven independently of the operation of the machine by operating the locking body release button S1. In addition, the motor 16 and the solenoid valve 2
2 can be driven in conjunction with the electric motor 6 by operating the winding button S2 independently of the operation of the machine.

A cutter 24 is provided at a position corresponding to the side of the fabric facing the main nozzle 2, which is operated every time the weft is inserted.

When a weft insertion error occurs, the cutting operation of the cutter 24 is prevented by the action of the air cylinder 26, which is activated based on the weft insertion error detection signal from the feeler 25 disposed on the side opposite to the main nozzle of the slay 1, and the woven fabric is The defective weft threads woven into the front of the weave are bound and connected to the main nozzle 2 side.

Next, a description will be given of the effect of the apparatus configured as described above. If you want to discard the weft yarn Y wound around the measuring drum 5 after a yarn feeding error or to prepare the weft yarn at the start of machine operation and wind it normally, turn on the locking body release button S1. state. When the locking body release button S1 is turned on, the solenoid 9 is activated, the locking body 10 is moved to the retracted position, and the engagement between the locking body 10 and the weft Y is released. Solenoid valve 2 is activated by turning on locking body release button S1.
0 is in a dehydration state, air is injected from the blow nozzle 12, and the blower motor 14 is driven to generate a suction airflow in the suction vibrator 15.

As a result, the weft Y wound around the length measuring drum 5 is guided into the suction vibrator 15 via the weft vibrator 13, resulting in the state shown in FIG. 2(a). Next, when the locking body release button S1 is turned off, the solenoid 9 is activated, the locking body 10 is placed in the engagement position, and the solenoid valve 20 is closed. At this time, the blower motor 14 is kept in a driven state, and the suction action of the suction vibrator 15 is maintained.

Next, when the winding button S2 is turned on, the electric motor 6 is driven and the thread winding tube 8 starts winding the weft Y anew. At the same time, the solenoid valve 22 enters the wftlI state, the air cylinder 18 is operated to protrude, and the pressure roller 19 is placed in an operating position where it is pressed against the drive roller 17, and both eyes-ra 1
The weft Y is held between 7 and 19. When the winding of the weft yarn Y of a predetermined length is completed by the yarn winding tube 8, the electric motor 6 is stopped by the winding completion signal, and the motor 16 is driven to rotate the driving roller 17 and the pressing roller 19. The weft Y is taken off. Since the weft yarn Y wound around the length measuring drum 5 is restricted from being pulled out by the action of the locking body 10, the weft yarn Y that passes through the main nozzle 2 and the guide vibrator 13 and reaches the double eye-ra 17.19 is cut by the cutting blade 23. As shown in Fig. 2(b), the main nozzle 2
is cut at a predetermined position from the tip. The cut weft yarn is taken up by the two-way racks 17 and 19, and is suctioned and removed by the suction vibrator 15. In other words, the weft yarn Y from the length measuring drum 5 through the main nozzle 2 and guide vibrator 13 to between the drive roller 17 and the pressing roller 19 is cut by being pressed against the cutting blade 23 in a tensioned state. , the length of the weft yarn flying out from the tip of the main nozzle 2 is always the appropriate length for weft insertion.

[Example 2] Next, a second example will be described according to Fig. 3.4. This embodiment differs from the previous embodiment in the structure of the weft take-off means. As shown in FIG. 3, a housing cylinder 27 is connected and fixed at right angles to the suction vibrator 15 at the distal end of the suction vibrator 15 that extends to the vicinity of the outlet 13a of the guide vibrator 13. An air cylinder 28 is housed therein, and a motor 29 is fixed to the tip of the piston rod 28a. A plurality of winding claws 30 are fixed to the drive shaft 29a of the motor 29. Suction vibe 1
There is a cross-shaped slit 1 on the wall of 5 as shown in Figure 4.
5b is formed, and the winding claw 30 reciprocates within the suction vibrator 15 and the housing cylinder 27 through the slit 15b by the operation of the air cylinder 28, and when the air cylinder 28 is operated to protrude, the winding claw 30 moves back and forth within the suction vibrator 15. Placed. motor 2
A rotary encoder 31 is attached to 9.

Further, the suction vibrator 15 is provided with a sensor 32 for detecting weft threads.

In the device of this embodiment, the winding claw 30 is normally arranged in the housing cylinder 27, and when the winding button S2 is turned on, the air cylinder 28 is actuated to protrude, and the winding claw 30 is operated to protrude.
0 is placed in the working position in the suction vibrator 15, and the winding completion signal activates the heptad 29 to rotate the winding pawl 30, and the weft Y from the main nozzle 2 to the suction pipe 15 is
is wound up, and during the winding operation, the weft yarn Y is cut at a predetermined position by the cutting blade 23 in the same manner as described above.

The weft yarn Y wound around the winding claw 30 is removed from the winding claw 30 when the winding claw 30 is moved into the storage cylinder 27 by the retraction operation of the air cylinder 28, and is removed by suction by the suction pipe 15.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the weft pulling operation of the weft yarn pulling means may be started at the same time as the winding of the yarn winding tube 8 starts, instead of after the winding is completed. , locking body release button S1 and wrapping button S2
Instead of providing this on the weft length measuring and storage device 4, a mounting number may be provided on the operation panel of the control device 11. In addition, in the case of a loom having a multi-color weft insertion function, instead of providing a locking body release button S1 and a winding button S2 for each weft length measuring and storage device 4, a locking body release button S1 and a winding button S2 are provided that are common to all weft length measuring and storing devices. Equipped with a stop release button and a winding button, all weft length measuring and storage devices are equipped with a weft*
It is also possible to perform the i work at the same time.

[Effects of the Invention] As detailed above, according to the present invention, by using the weft processing device installed in the shuttleless loom, a separate motor drives the thread winding tube and operates the locking body. By operating the switch that drives the locking body and yarn winding tube of the weft yarn length storage device that uses electrical signals, the weft yarn is automatically discharged from the length measuring drum and the length from the main nozzle tip is always adjusted to the appropriate length for weft insertion. Can automatically cut gj according to length, weft standard 1a
Work becomes easier.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of an embodiment embodying the present invention, FIGS. 2(a) and (b) are front views of main parts showing the operation, and FIG. 3 is a diagram showing another example of the weft pulling means. 4 is an enlarged sectional view taken along the line A--A in FIG. 3. Main nozzle 2, weft length measuring storage device 4, length measuring drum 5,
An electric motor 6, a thread winding tube 8, a solenoid 9 as a drive device, a locking body 10, a blow nozzle 12, a motor 16 constituting a weft take-off means. Drive roller 17. Air cylinder 18. Pressing roller 19, electromagnetic valve 20, cutting blade 23, winding claw 30 as a weft take-up means, locking body release button S1 as a first switch, winding button S2 as a second switch, weft Y0 Toyo Co., Ltd. 1 Automatic #A Machine Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A weft length measuring storage device that has a locking body that is activated by an electric signal and a thread winding tube that is driven by an electric motor and winds the weft onto a length measuring drum. A blow nozzle is provided in the vicinity of the tip outlet of the main nozzle to guide the weft threads connected to the main nozzle to the weft thread pulling means. A shuttleless loom comprising a weft processing device having: a cutting blade fixed at a predetermined position capable of engaging with a weft connected from a main nozzle to the weft take-up means; a drive device for actuating the locking body; A shuttleless machine provided with a first switch that interlocks and drives an electromagnetic valve that controls the operation of a blow nozzle, and a second switch that interlocks and drives the electric motor and the drive device of the weft take-up means. A weft preparation device in a loom.