JPH0524252B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a roving bobbin, which is used as a pre-device for removing residual roving from a roving bobbin that is wound on a roving frame and unwound on a fine spinning machine. The present invention relates to a device for introducing remaining roving yarn.

Prior Art The process of drawing and twisting a sliver using a roving frame to create roving (so-called sash), winding it onto a roving bobbin using a flyer mechanism, and then transporting and feeding it to a spinning frame is , is an important process in a spinning factory.

Recently, so-called bobbins have been introduced, in which the roving bobbins are unwound by the spinning machines and become empty bobbins, and are continuously sent back to the roving machines while hanging in a row on bobbin hangers. Conveying devices are being widely used and are contributing to labor savings in spinning factories.

However, the roving bobbin unwound by the spinning machine is subjected to so-called "shinotsuri" with some roving remaining on the bobbin in order to reduce the chance of yarn breakage in the spinning machine. There is a situation in which it cannot be reused in the roving frame as it is. Therefore, there is a need for a device that can efficiently remove the residual roving yarn remaining on the roving bobbin in the intermediate path of the bobbin conveying device, and the applicant has decided to address this request in advance. As a possible device, we proposed a new residual roving removal device using a flocked belt (Japanese Patent Laid-Open No. 62-90337).

This device divides the roving bobbin, which is rotatably suspended from a bobbin hanger and is being transported, into an appropriate number of processing units, and presses the peripheral wall of the roving bobbin against the traveling flocking belt for each processing unit. This is a device that attempts to remove the remaining roving yarn wound on the roving bobbin by unwinding it using a flocked belt, and removes the roving yarn that is still suspended from the bobbin hanger. A series of residual roving removal operations can be performed on the
It does not require the process of unhooking and reattaching the roving bobbin, and therefore can be conveniently used by being incorporated into the intermediate path of the bobbin conveying device.

Problems to be Solved by the Invention According to this prior art, the remaining roving on the roving bobbin is exposed by the bristles planted on the surface of the flocked belt, and the ends of the roving are Since it is unrolled and removed in order from
In cases where the ends of the remaining rovings on the roving bobbin are intricately intertwined and attached to the upper layer of the remaining rovings, the flocking belt alone may sometimes fail to pull out the remaining rovings. There was a problem that this occurred. A roving bobbin that has failed to be picked out in this way cannot be reused in the roving machine as it is, so it is necessary to further pass through a manual residual roving removal process, for example. As a result, there is a risk that the operating rate of the entire equipment in the factory will be greatly reduced.

SUMMARY OF THE INVENTION In view of the problems of the prior art, an object of the present invention is to rotate the roving bobbin and blow air onto it immediately before the roving bobbin is conveyed into the residual roving removal device to prevent the roving from becoming entangled. A device for removing residual roving yarn from a roving bobbin, which can minimize the risk of failure in leading the remaining roving yarn in the residual roving removing device by unraveling the yarn ends of the residual roving yarns attached. Our goal is to provide the following.

Means for Solving the Problems The present invention has a configuration in which a belt device is rotatably suspended from a bobbin hanger and disposed along the conveyance path of the roving bobbin being conveyed. The belt device includes a flat belt that contacts the upper end of the roving bobbin that is being conveyed and rotates the roving bobbin in a direction to unwind the remaining roving yarn, and an air nozzle that is arranged parallel to the roving bobbin. The gist is that air is blown in a direction opposite to the rotation of the roving bobbin over almost the entire length of the roving bobbin.

Function: According to this configuration, when the roving bobbin having the remaining roving yarn is suspended from the bobbin hanger and conveyed to the position of the belt device, the roving bobbin is attached to the upper end. It rotates under the rotational force of the contacting flat belt. On the other hand, almost the entire length of the roving bobbin is blown with air from an air nozzle, so the remaining roving on the roving bobbin is unraveled by the air, and the ends of the thread are lifted up. He is unwound and meddled with. Therefore, in the subsequent residual roving removal device, the flocking belt can reliably perform the feeding and removal of the residual rovings.

The air nozzle is arranged parallel to the roving bobbin, and can blow air over almost the entire length of the roving bobbin, so the attachment position of the remaining roving in the longitudinal direction of the roving bobbin can be adjusted. Even if the roving yarn is different from one bobbin to another, there is no risk that the success or failure of the air-based pick-up operation will be impaired.

It works as described above.

Embodiment A device for taking out the remaining roving yarn of a roving bobbin includes a belt device 10 and an air nozzle 20 (see FIG. 1,
Figure 2).

The roving bobbins B, B, . . . are each suspended from a bobbin hanger BH at a constant pitch, and are transported in a predetermined transport direction by a bobbin transport device CR (arrow A in FIG. 1). Here, the bobbin transport device CR includes, for example, a plurality of bobbin hangers BH, BH...
Each bobbin hanger BH can rotatably suspend the roving bobbin B, and by pushing up the roving bobbin B from below. , is a well-known device that can load and unload the roving bobbin B in one motion.

The roving bobbin B is formed by fitting an upper collar B1 and a lower collar B3 to both upper and lower ends of a bobbin body B2.
Therefore, on the roving bobbin B, an arbitrary amount of the remaining roving
remains, and the thread end X1 is attached to the bobbin body B.
on the surface of the remaining roving X wound around 2, or
It is attached to other parts of the body in an undefined form. However, it is assumed that the overall winding direction of the remaining roving yarn X is uniformly counterclockwise when viewed from above the roving bobbin B.

The belt device 10 as a whole includes a bracket 1
3, is equipped with a flat belt 11 and a drive motor 12, and is disposed along the conveyance path of the roving bobbins B, B, . That is, flat belt 1
1 is stretched between a pair of pulleys 11a, 11b whose center distance is smaller than the hanging pitch of the roving bobbins B, B..., and the drive side pulley 11a is directly connected to the shaft of the drive motor 12. There is. Further, the driven-side pulley 11b is attached to the bracket 13 via a bearing 11c, and furthermore, the distance between the axes of the pulleys 11a and 11b can be adjusted and set by a belt tensioner 14. .

The running direction of the flat belt 11 is between the roving bobbins B and B.
When the roving bobbin B comes into contact with the roving bobbin B, the remaining roving
is set so that it is rotated in the direction of unwinding (arrow x in the figure). The running position of the flat belt 11 is
The position is such that it comes into contact with the periphery of the upper collar B1 of the roving bobbins B, B, etc. that are being transported. The bracket 13 is fixed to the fixed frame F1 through bolt nuts 13a, 13a and long holes 13b, 13b, with the relative positional relationship between the flat belt 11 and the roving bobbins B, B, etc. being optimally adjusted and set. There is.

The air nozzle 20 is connected to the roving bobbins B and B during conveyance.
It is made up of a tube vertically installed in parallel to ..., and its peripheral wall is lined with nozzle holes 20a, 20a..., while at one end it has an air pipe 20b for connecting to an air source (not shown). are connected. The air nozzle 20 is attached to another fixed frame F2 via a bracket 21, and the air blown out from the air nozzle 20 is actually applied to the roving bobbin B with which the flat belt 11 of the belt device 10 is in contact. It is assumed that the spray is applied over almost the entire length of the roving bobbin B in a direction opposite to the direction of rotation of the roving bobbin B by the flat belt 11 (arrow y in FIG. 1) (arrow z in the same figure).

The remaining roving thread removal device for the roving bobbins having such a configuration is disposed immediately upstream of a remaining roving removal device (not shown), which is disposed in the middle of the transport path of the roving bobbins B, B, . . . .

First, when the drive motor 12 of the belt device 10 is driven, the flat belt 11 is moved by the pulleys 11a and 11b.
It is caused to rotate and travel in the direction of the arrow x in FIG. Therefore, when the roving bobbins B, B... are conveyed by the bobbin conveying device CR and one of them reaches the front position of the flat belt 11, the flat belt 11 is moved to the upper part of the roving bobbin B. Since the roving bobbin B contacts the peripheral edge of the collar B1, the roving bobbin B is rotated in the direction of the arrow y in the figure by the running of the flat belt 11. Here, the rotation of the roving bobbin B is started when the roving bobbin B reaches a position opposite to the driven-side pulley 11b, and the roving bobbin B is opposed to the driving-side pulley 11a. When the flat belt 11 passes through this position, the contact with the flat belt 11 is broken, and its rotation is stopped. Note that the rotation of the roving bobbin B can be performed smoothly because the bobbin hanger BH rotatably suspends the roving bobbin B.

On the other hand, from the air nozzle 20, arrow z in the figure
Air is blown out in the direction shown in , and due to contact with the flat belt 11, it is blown onto the roving bobbin B which is being conveyed while rotating. Here, since the remaining roving yarn X on the roving bobbin B is wound counterclockwise around the roving bobbin B as a whole, the air in the direction of arrow z unwinds this remaining roving yarn X. direction, and therefore the yarn end X of the remaining roving X
1 is made to float by air, and the remaining roving yarn X including the yarn end X1 is effectively unraveled,
You can intervene.

The air blown from the air nozzle 20 is blown onto the roving bobbin B over almost its entire length, and since the roving bobbin B is rotating at this time, the remaining roving on the roving bobbin B is Thread
Even if the position or shape of the yarn end X1 changes greatly, the feeding action from the roving bobbin B can be performed smoothly.

In this way, the roving bobbin B with the remaining rovings X, which has completed the unraveling and pulling out of the remaining rovings X including the yarn ends After completing the removal of the remaining roving yarn X, it may be returned to the roving machine.

In the above explanation, when the overall winding direction of the remaining roving yarn X on the roving bobbin B is reversed, the mounting positions of the belt device 10 and the air nozzle 20 are changed, and the air from the latter is The remaining roving yarn X may be sprayed in the direction of unwinding it. However, even in this case, the running direction of the flat belt 11 and the roving bobbin B at the contact position is the direction in which the remaining roving yarn X is unwound and the direction in which the roving bobbin B is rotated, and It goes without saying that the direction in which the air is blown is preferably in the direction opposite to the rotation of the roving bobbin B. Further, the running speed of the flat belt 11 can be appropriately selected so as to be able to impart a necessary and sufficient rotational speed to the roving bobbin B.
Furthermore, when the roving bobbin B is of the type lacking the upper flange B1, the flat belt 11 is the bobbin body B2.
It is sufficient to make direct contact with the upper end of the holder.

Effects of the Invention As explained above, according to the present invention, a flat belt is provided for actively rotating the roving bobbin by contacting the upper end of the roving bobbin during conveyance. In addition to disposing a belt device, an air nozzle is disposed that blows air over almost the entire length of the roving bobbin being rotated by the flat belt, and the running direction of the flat belt is
By appropriately determining the direction of air blowing from the air nozzle in relation to the winding direction of the remaining roving as a whole, the ends of the remaining roving can be reliably loosened and pulled out. If the roving bobbin is transported as it is to the remaining roving removing device, the risk of failure in picking out the thread in the device can be minimized, and therefore the operating rate of the entire device can be improved. This has an excellent effect.

In addition, since flat belts are actively driven and run in a predetermined direction, the bobbin transport is faster than a passive method in which, for example, the roving bobbin being transported is forcibly pressed against a fixed friction member. It is sufficient to occupy a short conveying distance along the device and therefore
It also has the practical effect of requiring only a small amount of air.

[Brief explanation of drawings]

1 and 2 show an embodiment, with FIG. 1 being an overall plan view and FIG. 2 being an overall front view. B...Roving bobbin, X...Remaining roving, BH...Bobbin hanger, 10...Belt device, 11...Flat belt, 20
...Air nozzle.

Claims (1)

[Claims] 1. A belt device is rotatably suspended from a bobbin hanger and disposed along the conveyance path of the roving bobbin being conveyed, and the belt device contacts the upper end of the roving bobbin being conveyed and A flat belt is provided that rotates the thread bobbin in a direction to unwind the remaining roving yarn, and an air nozzle is arranged parallel to the roving bobbin to rotate the roving bobbin over almost the entire length of the roving bobbin. This device blows air in the direction opposite to the roving bobbin.