JPH0329338Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a yarn splicing cart equipped with an air splicer pneumatic yarn splicing device that travels along with a spinning device.

〓Conventional technology〓 A spinning machine is usually equipped with a splicing device mounted on a movable splicing cart, and when a slub catcher detects an abnormal yarn and cuts the yarn during spinning. When the yarn splicing cart moves to the position of the weight, the yarn splicing device splices the yarn. There are various types of yarn splicing devices installed on yarn splicing carts, but they untwist the ends of the broken yarn by spraying air, and then spray air to the two untwisted yarn ends to create fibers. In the case of an air splicer (for example, JP-A-58-78960), which performs yarn splicing by causing entanglement and twisting of the
It is necessary to receive a supply of pressurized air necessary for twisting. However, the pressurized air required by an air splicer has a higher pressure than the pressurized air used for suction pipes for yarn guides, etc., so the compressor that generates this high pressure air is used for low pressure air used for suction pipes etc. Since there is a problem in mounting the pressurized air generator on the trolley together with the compressor because the trolley itself becomes too large, the compressor is not installed on the splicing trolley and is installed on the spinning machine from a separately prepared compressor. Normally, pressurized air is supplied to the upper line pipe, and the air splicer is made operable by connecting the line pipe to the pressurized air pipe on the splicing cart. In that case, the line pipe and the pressurized air piping on the yarn splicing truck are connected via line pipe branch pipes prepared at each scheduled stop position of the yarn splicing truck. The connection between the line pipe branch pipe and the pressurized air pipe on the splicing trolley is automatically made, and at the same time or afterwards, the branch pipe stop valve is released and pressurized air is supplied to the air splicer. .

As mentioned above, in the case of an air splicer that is connected to a line pipe branch pipe at the trolley stop position and operates by receiving a supply of pressurized air, there may be a temporary drop in the air pressure supplied to the line pipe, and the line pipe may If there is air leakage due to a poor connection with the branch pipe, the air supplied to the air splicer will not reach a predetermined pressure, and the air splicer will not perform its function to its full potential.
Naturally, the thread splicing becomes incomplete, resulting in not only a defective seam but also a thread splicing failure. Furthermore, if incomplete seams continue to be formed, the fully wound package will naturally become a defective package.

〓Problem to be solved by the invention〓 Therefore, the purpose of the present invention is to prevent incomplete yarn splicing due to the above causes from causing trouble in subsequent processes or from causing defective woven fabrics. It's about doing.

〓Means for solving the problem〓 A yarn splicing cart equipped with an air splicer that travels along with a spinning machine stand made up of multiple units consisting of a draft device, a slab catcher, a winding device, etc. , a pressurized air pressure detection device is attached to the pressurized air piping on the yarn splicing cart that receives pressurized air from a line pipe installed on the spinning machine base and supplies pressurized air to the air splicer. A solenoid valve that opens only when the pressure detection device detects a predetermined air pressure was attached to the pressurized air piping between the pressure detection device and the air splicer.

〓Effect〓 When using the trolley of the present invention, the pressure detection device detects that the pressure air pressure emitted by the splicer toward the yarn end during yarn splicing is within the range of suitable air pressure determined by the yarn being spun. The solenoid valve operating conditions are set so that the solenoid valve installed in the pressurized air piping to the splicer opens only when the air pressure is present, and closes when the air pressure falls below the preferred air pressure. As a result, when the air pressure becomes insufficient for proper operation of the air splicer, the solenoid valve closes, the air splicer ceases to operate, and no splicing is performed.

〓Example〓 Hereinafter, an example of the yarn splicing cart of the present invention will be described with reference to the drawings.

A spinning machine 2 equipped with a splicing cart 1 according to the present invention has a plurality of units such as a draft device 4, a slab catcher 5, a winding device 6, etc. arranged in parallel in the machine machine longitudinal direction on a spinning machine machine base 3. It is a normal air spinning machine.

The splicing cart 1 is supported by rails 7 on a spinning machine platform 3, and is movable in the longitudinal direction of the spinning machine platform. The yarn splicing cart 1 is equipped with an air splicer 8, a suction pipe 9 for suctioning the yarn end on the draft device 4 side, and a suction mouth 11 for suctioning the yarn end on the package cage 10 side, which are different from those of the conventional yarn splicing cart. There is nothing particularly different. Note that the suction pipe 9 is placed at the position shown by the chain line when the truck 1 moves. Air splicer 8
The operating pressurized air pipe 12 extends in the direction of the spinning machine stand 3 of the spinning machine 2 via a solenoid valve 13, and a connecting fitting 14 is attached to the tip thereof. Also,
The connecting fitting 14 mounting portion of the pipe 12 is movable in the direction of the spinning machine stand 3 by a cam mechanism (not shown).

On the spinning machine stand 3, after the yarn splicing cart 1 has stopped at a predetermined unit position, the connection fitting 14 is placed at a position where it comes into contact when it moves in the direction of the spinning machine stand 3, for each unit as shown in FIG. There is a branch pipe 16 which has a connecting fitting 15 with a valve body similar to the above-mentioned valve body at its tip, and the other end of the branch pipe 16 is connected to a line pipe 17 for supplying pressurized air.

A pressure detection device 18 is attached to the pressurized air piping 12 between the solenoid valve 13 and the connecting fitting 14.
It is opened and closed by a control device 30 that operates based on an output signal.

FIG. 2 shows an example of the pressurized air piping connection mechanism. Connection fitting 15 at the tip of line pipe branch pipe 16
The connecting fitting 14 at the tip of the pressurized air pipe 12 on the splicing trolley 1 is pressed against the valve seat 21 on the inner surface of the tip of the connecting fitting 15 to create an airtight connection with the packing 20. By pushing the body 23 with the valve body abutting portion 24 located at the center of the connecting fitting 14, the valve body 23 is moved back, thereby creating a gap between the valve body 23 and the valve seat 21, and allowing pressurized air to flow. Ventilation hole 2 around the valve body contact part 24
The pressurized air is caused to flow into the pressurized air pipe 12 via 5.

Next, a yarn splicing operation when spinning is performed by the spinning machine 2 equipped with this yarn splicing cart 1 will be described. When the slab catcher 5 detects that an abnormal yarn has occurred while the sliver S is being drafted by the drafting device 4 and cuts the yarn Y, the yarn splicing cart 1 runs on the rail 7 and returns to the position of that unit. Immediately, the suction pipe 9 and the suction mouth 11 are reciprocated by a cam mechanism (not shown) to suction and guide the spinning-side yarn end and the package-side yarn end to the splicer 8. The cam mechanism further connects the connecting fitting 14 to the connecting fitting 15.
The connecting fitting 14 is connected to the connecting fitting 15 at the tip of the branch pipe 16, and the valve body 2 of the connecting fitting 15 is pushed out to the side.
3 is opened so that pressurized air can be supplied from the line pipe 17. When pressurized air flows into the pipe 12 from the line pipe 17 via the branch pipe 16, its pressure is detected by the pressure detection device 18, and when the detected pressure is within the appropriate pressure range, the control device 30 activates the solenoid valve 13. open. Note that since the appropriate pressure varies depending on the yarn to be processed, the critical value for causing the control device to open and close the solenoid valve 13 is selected by adjusting the control device 30 depending on the type of yarn.

The yarn splicing operation of the two yarn ends guided as described above by the air splicer 8 is not particularly different from that of a normal air splicer.
After the yarn ends are spliced by untwisting and twisting by the injection of pressurized air supplied through the yarn 2, spinning is restarted.

The connecting fitting 14 is a branch pipe 16 of the line pipe 17
For example, if the connection between the metal fittings 14 and the metal fittings 15 is defective, or if the air pressure inside the line pipe 17 itself decreases, etc. If the pressure of the pressurized air at the position of the detection device 18 falls below a preset value for some reason, the control device controls the solenoid valve 1.
3 to stop the operation of air splicer 8,
To prevent incomplete thread splicing. In conjunction with this operation, a separately prepared alarm device issues an alarm, such as a flashing red lamp, to notify the unit that an abnormality has occurred.

Since the above-mentioned simple ON-OFF control is performed, the pressure detection device and the electromagnetic valve control device may be simple, for example, a pressure gauge with an electric switch that can vary the operating pressure.

Furthermore, when the yarn splicing cart 1 moves to another unit and stops, if the pressure measured by the pressure detection device 18 in that unit is normal, the solenoid valve 13 in that unit will naturally open and resume normal operation. A yarn splicing operation is performed.

〓Effects of the invention〓 The yarn splicing cart of the present invention has a pressurized air pressure detection device attached to its pressurized air piping, and a solenoid valve with a control device that opens only when the pressure detection device detects a predetermined air pressure. Since it is installed in the pressurized air piping between the pressure detection device and the air splicer, the pressure of the pressurized air to be supplied to the air splicer may drop due to some reason such as the above-mentioned defective fit between the fittings. , when the air splicer was not allowed to operate properly, the splicing operation was not performed without supplying pressurized air to the air splicer, resulting in incomplete splicing due to insufficiently pressurized air injection. This prevents the thread from being sent to the package cage while the thread is being threaded.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing the usage state of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the connecting portion between the pressurized air pipe and the line pipe on the splicing cart. 1... Yarn splicing cart, 2... Spinning machine, 4... Draft device, 8... Air splicer, 12... Pressurized air piping, 13... Solenoid valve, 14, 15... Connection fittings, 16... Branch pipe, 17...line pipe, 18...pressure detection device.

Claims (1)

[Scope of utility model registration request] In a yarn splicing cart equipped with an air splicer, which runs alongside a spinning machine stand consisting of multiple units consisting of a draft device, a slab catcher, a winding device, etc., installed in the spinning machine stand. A pressure detection device for pressurized air is attached to the pressurized air piping on the splicing cart that receives pressurized air from the line pipe and supplies pressurized air to the air splicer.
A yarn splicing cart for a spinning machine, characterized in that a solenoid valve that opens only when the pressure detection device detects a predetermined air pressure is attached to a pressurized air pipe between the pressure detection device and an air splicer.