JPH0253532B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a residual yarn removing device for a spinning machine bobbin.

[Conventional technology]

In a spinning factory, in order to streamline transportation, a rail is attached to the machine from the roving machine, and roving bobbins are attached to the bobbin magazine, and on the line where the roving bobbins are conveyed all at once to the spinning machine. When the bobbin is returned to the roving machine, some roving remains on the bobbin.

This is because the bobbin is automatically fed and transported.
Since the rovings are changed all at once, there is approximately 20 to 40g of roving remaining per thread. This is called residual thread.

Conventionally, the remaining thread on the bobbin was manually loaded into the bobbin case, the direction was automatically aligned in the case, and the remaining thread was stripped from the end while turning the bobbin, or one person held the bobbin one by one. I used the suction port to pull out the remaining threads.

[Problem to be solved by the invention]

In the conventional residual yarn removal method described above, when removing the residual yarn, other parts come into direct contact with the bobbin, which may damage the bobbin or leave roving.
This also required work such as complete manual extraction. In recent years, spinning machines have become longer and longer than conventional
The number of spindles has increased from 400 spindles to 480 to 960 spindles, and when these roving threads are changed all at once, a large amount of bobbin is moved at once, and the amount of thread remaining is proportional to that, making it possible to remove a large amount of thread in a short time. It is required to be processed.

In addition, with the conventional method, the remaining yarn had to be disposed of near the roving machine, and for this purpose, the empty bobbin had to be transported to the roving machine using a separate trolley, resulting in time loss and transportation time. It was a waste of time and effort.

The present invention was proposed in view of the above-mentioned problems of the conventional residual yarn removing device, and its purpose is to remove the bobbin while the bobbin is suspended on the conveyance rail in the middle of the bobbin conveyance line. It is an object of the present invention to provide a device that can remove residual yarn from a bobbin without contacting the bobbin, and can rationally carry out the residual yarn removal process of this type of bobbin in a short period of time.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a plurality of bobbins that are installed at a position directly below the middle of a conveyor rail and whose lower ends are communicated with a suction chamber, corresponding to a plurality of bobbins that are conveyed in a suspended state on a conveyor rail. and an elevating intake nozzle, which has a cylindrical shape and has an inner diameter larger than the outer diameter of the bobbin, and is installed in each fixed intake outer cylinder so that it can be raised and lowered via an elevating means. It is something that

[Effect]

When the bobbin from which the remaining threads are to be removed is suspended on the transport rail and reaches the remaining thread removal position, the elevating suction nozzle is raised by the elevating means while sucking air, swallowing the bobbin from its lower end, and lifting the bobbin to its upper end. It rises to the vicinity and sucks up the remaining thread remaining on the bobbin. Next, the elevating suction nozzle descends to complete one cycle of residual yarn removal work.
The empty bobbin is sent to the spinning frame on the conveyor rail, and the next bobbin is sent from the spinning frame.
The remaining yarn is removed in the same manner as above, and the same operation is repeated one after another.

〔Example〕

FIG. 1 is a front view of the apparatus of the present invention, FIG. 2 is a side view, and FIG. 3 is an enlarged longitudinal sectional front view of a part of the apparatus of FIG. 1. In these figures, 1 is a conveyor rail, 2 is a bobbin, 3 is a fixed intake outer cylinder, 4 is a suction chamber, 5 is an elevating intake nozzle, 6
indicates the means of elevating.

The transport rail 1 is installed above the machine between the spinning frame and the roving frame, and is configured to suspend and transport the bobbin 2 via the bobbin magazine 7.

The bobbin magazine 7 has a gripping tool 7d on the frame 7a that grips a plurality of bobbins 2 (the drawing shows a case of five bobbins in two rows, but the invention is not limited to this) at its upper end. A truck 7d is provided on this frame 7a via a support rod 7c, and this truck 7d
is made to run along the conveyor rail 1.

The fixed intake outer cylinder 3 is installed at a position directly below the transport rail 1 midway to correspond to the plurality of bobbins 2 that are transported in a suspended state on the transport rail 1 via the bobbin magazine 7, and the lower end is connected to the suction chamber. It is connected to 4.

Inside each fixed intake outer cylinder 3, there is an elevating intake nozzle 5.
is installed so that it can be raised and lowered.

Each elevating intake nozzle 5 has its upper end connected to an elevating body 8.
The elevating body 8 is movable up and down along the elevating guide 8a with respect to the suction chamber 4 and the fixed intake outer cylinder 3 by elevating means 6 such as an air cylinder.

The elevating intake nozzle 5 has a cylindrical shape with a larger diameter than the outer diameter of the bobbin 2, and is longer than the bobbin 2.

A seal packing 3a is installed around the upper end of the fixed intake outer cylinder 3 to prevent leakage of intake air from the gap with the elevating intake nozzle 5. In addition, an annular thin-blade orifice 3 is provided at the lower part of the inner surface of the fixed intake outer cylinder 3.
b is provided, and its constriction effect generates a turbulent flow and strengthens the suction effect of the remaining yarn. For the same purpose, the communicating portion 4a between the lower end of the fixed intake outer cylinder 3 and the suction chamber 4 also forms a communication hole smaller than the inner diameter of the fixed intake outer cylinder 3.

The suction chamber 4 is connected at its lower part to an appropriate dust collector (not shown) via a suction duct 9, and is fixedly supported by pillars at four corners.

A magazine conveying device 10 is installed above the remaining yarn removal position where the fixed intake outer cylinder 3 and the elevating intake nozzle 5 are installed. As shown in FIGS. 4 to 6, this magazine conveying device 10 uses two sets of conveying belts 10c stretched between a driving pulley 10a and a driven pulley 10b, and a bobbin magazine 7.
drive pulley 1.
One of the drive pulleys 10a is connected to a motor 10d with a reduction gear, and the other drive pulley 10a is connected to a gear 1 with the same number of teeth.
The conveyor belt 10c is tensioned by a tension pulley 10f, and in order to securely clamp and convey the bobbin magazine 7, a presser plate 10g is attached to the conveyor belt 10c. They are placed opposite each other. This presser plate 10g
is the support bracket 10i via the support rod 10h.
The spring 10j is slidably supported at all times.
This is a configuration in which pressure contact force is applied.

The operation of the magazine conveyance device 10 is to carry in and position the bobbin magazine 7 moving along the conveyance rail 1 to a fixed position, and after removing the remaining yarn, carry it out. Magazine sensor (not shown) and positioning stopper 11
is installed.

Further, the bobbin magazines 7 are connected by a connecting plate (not shown), and the connection points of this connecting plate are connected by a long hole and a pin, and there is no play in the conveying direction by the length of this long hole. It is configured so that it can pass through the curved portion of the conveyance rail 1 using pins.

The device of the present invention has the above configuration, and its operation will be explained next.

The magazine conveyance device 10 clamps a part of the bobbin magazine 7 and conveys the bobbin 2 to the residual yarn removal position using friction. When the magazine sensor detects that the bobbin magazine 7 has been carried into a fixed position, it is positioned and stopped by the stopper 11, and the elevating type intake nozzle 5 is immediately raised via the elevating means 6. Suction chamber 4 is always (or
(Only when rising) Apply air intake, and the elevating suction nozzle 5 rises to swallow each bobbin 2 from below each bobbin 2, and suction removes the residual yarn remaining on each bobbin 2 so as to pull it out from the bobbin 2. . This operation absorbs the remaining yarn in almost a few seconds. Then, the elevating intake nozzle 5 descends, the stopper 11 is released, the bobbin magazine 7 from which the remaining yarn has been removed is carried out by the magazine transport device 10, the next bobbin magazine 7 is carried in, and the same operation as above is repeated. do. All of the above operations can be performed automatically. Furthermore, for products made of different fibers, the above-mentioned devices may be installed for each fiber, or one device can be used in common by replacing the lines. In this way, it is possible to install it at any position in the conveyance line, and automatic conveyance is also possible.

〔Effect of the invention〕

According to the present invention, the remaining yarn can be removed while the bobbin is suspended on the transport rail, the bobbin residual yarn can be efficiently removed in a short time, and the process can be carried out without contacting the bobbin. It does not damage the bobbin and can be installed anywhere in the conveyance line, so it has advantages such as being advantageous in terms of space.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a side view, Fig. 3 is an enlarged longitudinal sectional front view of a part of the device in Fig. 1, Fig. 4 is a plan view of the magazine conveying device, and Fig. 5 is a front view of the device of the present invention. The figure and FIG. 6 are sectional views taken along the - line and - line in FIG. 4. 1...Transportation rail, 2...Bobbin, 3...Fixed intake outer cylinder, 4...Suction chamber, 5...
Elevating intake nozzle, 6... Elevating means.

Claims (1)

[Scope of Claims] 1. A plurality of fixed air intakes are installed at a position directly below the conveyor rail in the middle of the conveyor rail, corresponding to the plurality of bobbins conveyed in a suspended state on the conveyor rail, and whose lower ends communicate with the suction chamber. It is characterized by comprising an outer cylinder and an elevating intake nozzle that is cylindrical in shape and has an inner diameter larger than the outer diameter of the bobbin, and that is installed in each fixed intake outer cylinder so that it can be raised and lowered via an elevating means. A device for removing yarn left on spinning machine bobbins.