JPH03213529A - Empty bobbin-supplying device in spinning machine - Google Patents

Abstract

PURPOSE:To rapidly supply an empty bobbin to an autdoffer on a working carriage by allowing the carriage to travel to a spinning unit requiring a doffing operation, carrying the empty bobbin with a conveyor and delivering the empty bobbin to the working carriage on which a bobbin exchange is performed. CONSTITUTION:An empty bobbin B is discharged from an empty bobbin stock room 4 on a conveyor 5 disposed along many spinning units disposed in parallel and carried with the conveyor. When a package is filled in a spinning unit U and a doffing operation is required, a working carriage 1 travels to the spinning unit U, stops at the place and is subjected to the doffing operation. An empty bobbin B is simultaneously carried with the conveyor 5 and supplied to an autodoffer 2 of the working carriage 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Field of Industrial Application] The present invention relates to a device for supplying empty bobbins to a work cart in a spinning machine.

[Conventional technology]

The empty bobbin supply device for an air spinning machine in which many spinning units each having an air injection nozzle for twisting the drafted fiber bundle are installed in parallel, winds the seed yarn into an empty bobbin stocker at one end of the machine. The attached bobbins are stocked in advance, and a work cart equipped with an automatic doffer and yarn splicing device goes to the stocker to pick up the bobbins, grips one bobbin there, and then the work cart sends it to the spinning unit that requests doffing. A device that travels to a location where bobbin replacement and thread splicing work is performed (Japanese Patent Application Laid-Open No. 64-26741)
(see Publication No. 1) is known.

[Problem to be solved by the invention]

With conventional empty bobbin supply devices, it takes a considerable amount of time for the work cart to pick up the empty bobbin from the empty bobbin stocker and return to the spinning unit where doffing is requested. There is a problem that depending on various conditions such as yarn type, two-briar type, etc., the doffing operation is delayed and the operating rate of the spinning unit is significantly reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide an empty bobbin supply device for a spinning machine that can quickly supply empty bobbins to an auto-docker loaded on a work cart.

8. Structure of the Invention [Means for Solving the Problem] In order to achieve the above object, the empty bobbin supply device in the spinning machine of the present invention includes a conveyor 5 that conveys the empty bobbin B discharged from the empty bobbin stocker 4. is installed along a large number of spinning units U, and while the work cart 1 equipped with the auto doffer 2 stops at the spinning unit U that requested doffing and replaces the bobbin, empty bobbins B are transferred from the conveyor 5. This is to be delivered to the work cart 1.

[For production]

In the empty bobbin supply device for a spinning machine configured as described above, when a package becomes full in a certain spinning unit U and there is a request for doffing, the work cart 1 travels to that spinning unit U. Stop there and replace the bobbin. In the meantime, the empty bobbin B is conveyed by the conveyor 5, delivered to the work cart 1, and replenished.

〔Example〕

Examples will be described with reference to the drawings.

FIG. 1 shows a spinning device that employs the empty bobbin supply device of the present invention. This spinning device has a large number of spinning units U arranged in a line between a prime mover box and a pro-a box, and a work cart 1 equipped with an auto doffer 2 and a yarn splicing device 3 is installed along each spinning unit U. It is something that runs. Reference numeral 4 denotes an empty bobbin stocker for storing empty bobbins B to be supplied to the autodoffer 2. A conveyor 5 runs endlessly along each spinning unit U, and has the function of conveying empty bobbins B discharged from the empty bobbin stocker 4 to the position of the auto-docker 2.

The spinning unit U includes a draft device, an air injection nozzle, a nip roller that pulls out the spun yarn produced by the nozzle,
It consists of a slab catcher that detects a large part of the spun yarn, and a winding section that winds the yarn while traversing it around the package P. In addition, two air injection holes having mutually opposite rotation directions are provided in the air injection nozzle.

Next, the empty bobbin supply device in this spinning apparatus will be explained with reference to FIGS. 2 to 5.

In FIG. 2, numeral 6 denotes a full tube lamp provided for each spinning unit, which lights up when a predetermined amount of yarn is wound around the package P of that spinning unit. This is what is called a doffing request signal. The one within the dashed line in FIG.
The light emitted from the bobbin stocker 4 is received by the light receiver 7, and the signal is converted into an electric signal and sent through the sequencer 8 again as an optical signal from the light emitter 9 to the light receiver 10 on the empty bobbin stocker 4 side. be. Figure 3 shows work trolley 1.
The positional relationship between the light emitter 9 on the autodoffer 2 side and the light receiver 10 on the empty bobbin stocker 4 side, which are installed in the auto docker 2, is shown.

At the empty bobbin stocker 4 to which the light receiver 10 that receives the optical signal belongs, the optical signal is converted into an electrical signal and transmitted to the air cylinder 16 via the amplifier 14 and sequencer 15, as shown in FIG. By the action of the air cylinder 16, one empty bobbin B stocked in the bobbin guide 18 is pushed out toward the conveyor 5 by the pusher 17. As shown in FIGS. 2 and 3, this empty bobbin B is conveyed to the conveyor 5 and headed toward the auto-deliverer 2. Then, the empty bobbin B that has reached the auto-dropper 2 is caught by a bobbin catcher 11 of the auto-dropper 2 facing above the conveyor 5, and its progress is prevented.

Next, the configuration of the auto transferr 2 will be explained with reference to FIG. 5.

When the bobbin catcher 11 electrically detects that the empty bobbin B has come into contact with it, it is swung by the drive of the motor 12 and shakes off the empty bobbin B from the conveyor 5 into the bobbin magazine 19.

At the same time, the chuck car 2 is located at the front end of the bobbin magazine 19 and is already chucking the empty bobbin B on the front side.
1 rotates toward you and drops the empty bobbin B.

When the operation is finished and Chutka 21 returns to its old position,
The bobbin pusher 20 rotates around the shaft at the lower end,
Another empty bobbin B is pushed into the chucker 21 and held there.

On the other hand, when the doffing request signal is issued, the full package P supported by the cradle 28 on the side of the spinning unit U is moved by the opener supported by the shaft that moves and rotates in the axial direction.
22, it is removed from the cradle 28. That is, the opener 22 is rotated forward, comes into contact with the inside of the cradle handle 29 extending above the cradle 28, and then moves outward to release the support.

After the package is dropped from the cradle 28 in this manner, the empty bobbin B dropped from the chucker 21 as described above is supplied.

In addition, in parallel with the bobbin exchange, the suction pipe 22 sucks and grasps the spun yarn that continues to be spun and retreats downward, while the hooker 22 present at the tip of the guide lever 24
Then, the yarn is hooked onto the guide 27 on the spinning unit U side.

Subsequently, the guide lever 24 rotates downward to remove the thread from the guide 27 and guide the thread to the side of the bobbin holder held in the cradle 28. At this time, the air cylinder 25 located at the tip of the guide lever 24 and holding the hooker 26 works to hook the thread to a hook formed on the outer periphery of the bobbin holder.

Thereafter, the yarn is guided by the traverse guide 31, the bobbin is driven by the friction roller 30, and winding is started.

Therefore, with such an empty bobbin supply device, it is possible to save time for picking up an empty bobbin every time doffing is performed. Furthermore, when such an automatic dosing method is adopted, there is no need to prepare a seed thread in an empty bobbin as in the conventional method.

C.9 Effects of the invention Since this invention is configured as explained above,
This produces the effects described below.

In other words, since the work cart stops at the spinning unit that has requested doffing and replenishes empty bobbins while changing the tube, empty bobbins can be quickly supplied to the spinning unit that has requested doffing, and spinning The operating efficiency of the machine will be greatly increased.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a spinning machine that employs the empty bobbin supply device of the present invention, and FIG. 2 is a conceptual diagram showing the relationship between the full tube lamp on the spinning unit side, the auto docker, and the light receiver on the empty bobbin stocker side. FIG. 3 is a schematic diagram showing the relationship between the work cart, the empty bobbin stocker, and the conveyor, FIG. 4 is an explanatory diagram of the operation of the empty bobbin stocker, and FIG. 5 is a perspective view of a portion centered on the auto-docker. 1-111---Work trolley, 2---Auto docker, 4 Empty hoin stocker, 5- Conveyor,
B, U---1---spinning unit

Claims (1)

[Claims] 1. A conveyor 5 for conveying empty bobbins B discharged from the empty bobbin stocker 4 is installed along a large number of spinning units U installed together, and a work cart 1 equipped with an auto doffer 2 carries a doffing request to the spinning unit U. This empty bobbin supply device in a spinning machine transfers an empty bobbin B from a conveyor 5 to a work cart 1 while the spinning machine stops to replace the bobbin.