JPS5824530B2 - How to operate bundled spun yarn manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for stopping the operation of each spindle of a bundled spun yarn manufacturing apparatus all at once while the set yarns are still connected, and restarting the operation.

BACKGROUND OF THE INVENTION Apparatuses for producing so-called bound spun yarns from stable fiber bundles such as rovings or slivers, in which the center layer is untwisted and the surface layer fibers are wound helically around the center layer, are already known.

This bundled spun yarn production device generally includes a drafting device that drafts the staple raw material, makes some fibers open-end, and sends them out in the form of a ribbon, a pneumatic device that converges the sent-out fibers, and a swirling action on the fiber bundle. It has a fluid plate twisting device, a thread take-up device, and a winding device.

In addition, since the yarn forming action is performed at high speed in this bundled spun yarn manufacturing device, a yarn breakage detector is installed between the device and the winding device via the fluid plate, and a device that stops the supply of raw materials when the yarn breaks. It is better to set it up.

When using such tied spun yarn manufacturing equipment, if you simply stop the equipment all at once to change workers, maintain machinery on holidays, or eliminate trouble, it will cause problems when restarting operation. It becomes necessary to thread each spindle.

An object of the present invention is to provide an operating method for efficiently restarting the apparatus for producing bound spun yarn as described above when the apparatus is temporarily stopped.

This invention will be explained with reference to the drawings.

FIG. 1 is a schematic side view illustrating the overall configuration of a bound spun yarn manufacturing apparatus according to the present invention, and FIG. 2 is a sequence diagram illustrating the configuration of the present invention.

The draft device 2 is for drafting the staple fiber raw material 1, and is composed of a roller and an apron.

The apron device 2a also serves as the front part of the drafting device 2, and opens toward the tip to form a wedge-shaped space, which collects the fibers on the outside in the width direction of the fiber group that is drafted and sent out in a ribbon-like state. Transport with open end.

The pneumatic device 3 is connected to a pneumatic duct 5 via a rubber tube 4, and sucks in the fiber group sent out from the draft device 2 and converges it.

The rubber tube holding device 6 is sometimes used to temporarily stop the pneumatic device.

The fluid plate device 7 gives a swirling action to the fiber bundle by the action of a pressure fluid, such as compressed air, supplied from a pressure pipe 8.

A valve 9 such as a solenoid valve is installed between the piping 8 and the temporary twisting device 7, if necessary.

A yarn guide 10 is provided between the take-off device 11 and the temporary twisting device 7, if necessary.

Furthermore, the yarn breakage detection device 13 is not limited to being provided after the take-off device 11, but may be provided before the take-off device.

The winding device 12 winds up the yarn sent out from the winding device 11 into buckets.

Although the raw material supply stop device 14 is illustrated as one that operates a solenoid in response to a signal from the thread breakage detection device 13 to nip the staple raw material 1 and stop the raw material supply, other devices such as a draft device may be used.

It is also possible to configure the back roller to be stopped for each weight using an electromagnetic clutch or the like.

In addition to the contact type limit switch, other known devices may be used as the thread breakage detector.

The signal from the yarn breakage detector can also be used to open and close the solenoid valve 9 to stop the supply of pressurized fluid from the fluid plate to the device in the event of a yarn breakage.

- This invention operates a machine as follows.

When stopping the machine while spinning is being performed on each spindle, first, the yarn breakage detector and raw material supply stop device are made inoperative even if the yarn becomes slack.

To do this, for example, a limit switch-type thread breakage detector that conducts current when the thread breaks, and a solenoid that performs an operation to nip the raw material when current is passed, are connected via a relay with an A contact to set the limit of the device. All you have to do is cut off the power supply to the switch.

Next, the draft device, take-up device, and winding device are interlocked and stopped simultaneously.

This can be done by turning off the motors that drive these devices.

The temporary twisting device and pneumatic device are stopped last.

The stop operation is done by the draft device and take-up device. This may be done at the same time as confirming that the winding device has stopped, or may be done after an appropriate period of time.

In practice, the fluid supply from the fluid plate to the device and the fan that operates the pneumatic device are stopped.

The order of stopping both of these may be at the same time, or may be slightly different from each other.

In this manner, the operation of the entire machine is stopped with the thread still connected from the raw material to the winding.

When restarting a machine that has stopped operating under such conditions, first ensure that the thread breakage detector and raw material supply stop device do not operate even if the thread becomes slack, and then ensure that the fluid plate does not operate the machine. Activation of the fluid supply and pneumatic device is started, followed by the simultaneous activation of the draft device, take-off device and winding device in conjunction.

Finally, power is connected to, for example, a limit switch, a solenoid, etc. so that the thread breakage detector and the raw material supply stop device operate.

With the above operations, the machine can be restarted without thread breakage.

Operations such as operating switches on the machine control panel and opening the main fluid valves that satisfy the above sequence may be performed automatically using a timer or the like, or may be performed sequentially manually. be.

According to the present invention, a multi-spindle bundled spun yarn manufacturing apparatus having a drafting device, a pneumatic device, a fluid plate pulling device, a take-up device, two winding devices, a yarn breakage detector, and a raw material supply stop device is provided so that the yarn does not break. It is possible to stop and restart the machine at any time.

Therefore, there is no need to manually thread each weight each time the machine is stopped or started, which is useful for saving labor and improving productivity.

[Brief explanation of drawings]

Figure 1 is a schematic side view of the bundled spun yarn manufacturing device, and Figure 2 is
This is a sequence diagram. 1. Nistable fiber raw material, 2. Nidraft device, 3-5:
Pneumatic device, 7: Fluid plate device, 8: Pressure fluid piping, 11: Taking device, 12: Winding device, 13: Yarn breakage detector, 14: Raw material supply stop device.

Claims (1)

[Claims] 1. Draft device, pneumatic device, temporary twisting device. During the operation of the bundled spun yarn manufacturing apparatus, which consists of two take-up devices, a yarn breakage detector, and a raw material supply stop device that is activated by the signal from the detector, the raw material supply is first stopped by the signal from the yarn breakage detector. Make the device inoperative, then stop the draft device, take-up device, and winding device at the same time, and at the same time as or after this stop, stop the temporary twisting device and pneumatic device, and restart the operation of the bundled spun yarn manufacturing device. A method of operating a bundled spun yarn manufacturing apparatus, which is characterized by temporarily stopping the apparatus. 2. Draft device, pneumatic device, temporary twisting device. During the operation of the bundled spun yarn manufacturing apparatus, which consists of two take-up devices, a yarn breakage detector, and a raw material supply stop device activated by the signal from the detector, first, the raw material supply stop is activated by the signal from the yarn breakage detector. The device is put into an inoperative state, and then the draft device, take-up device, and winding device are stopped at the same time, and at the same time as or after this stop, the temporary twisting device and the pneumatic device are stopped in a temporarily suspended state. When restarting spinning of the manufacturing equipment, the temporary twisting device and pneumatic device are activated while the raw material supply stop device, which is activated by the signal from the yarn breakage detector, is inactive, and the draft device, take-up device, and winding device are activated. A bundled spun yarn manufacturing device characterized in that the device is operated simultaneously with or after the temporary twisting device and the pneumatic device are activated, and then the raw material supply stop device is activated by a signal from a yarn breakage detector. how to drive.