JPS5889565A - Method and device for splicing yarn by means of pressure gas splicing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for splicing a first yarn and a second yarn by pressure splicing. Pressurized air is often used as the pressurized gas.

In this type of device, the working process from receiving each batch to the final splicing is carried out automatically.

Particularly in the case of thin threads and threads with a particular fiber structure, the mutual stickiness of the fibers may not be sufficient to achieve a satisfactory splicing by an automatic splicer. For this reason, joining by splicing is often achieved only after the third or fourth splicing step.

Since manual tin livery, it has been known to spray glue-containing liquids into pressurized air in an atomizer manner.

However, such measures impart excessive adhesion to the threads, leading to sticking of the tin live and eventually failure of the tin live due to corrosion. For automatic splicers, therefore, no means are available for supplying glue-containing liquids in an atomizer manner.

The object of the present invention is to improve the quality of spliced yarn seams, extend the application of automatic splicing machines to thinner yarns and yarns with special fiber structures, and reduce the number of splicing steps per splicing operation. and also to improve the efficiency of textile machines in which the pressure gas splining device is used.

According to the present invention, this problem is solved in a method of splicing a first yarn and a second yarn by pressure gas splicing. (b) Substances that lubricate mechanical parts and prevent corrosion of mechanical parts; Substances listed in (a) and (CI) above. The problem is solved by supplying a metered suspension containing the gas to the pressure gas before it enters the splining chamber.

When splicing a specific yarn having a specific fiber structure, a predetermined amount of suspension must be metered and supplied into the pressurized gas for each stringing process. For this reason, there must be no excess or deficiency of suspension at the splicing site. The suspension should have properties that improve the above-mentioned fiber processing properties and prevent fiber adhesion. This requirement significantly limits the range of suspensions that can be used. Furthermore, the suspension must lubricate the mechanical parts and prevent corrosion of the mechanical parts.

This is also of great importance in automatic splicing equipment.

These requirements are ideally met by using suspensions containing hydrosyl silicate, oil and water as suspensions. Good results are achieved when water containing 0.2 to 0.8% hydrosyl silicate and 0.03% to 0.5% oil is used as a suspension.

According to another embodiment of the invention, the metered amount of suspension is transferred into the gas flow channel leading to the splicing chamber and is entrained in portions and finely distributed by the pressure gas flow.

This method is not carried out in the form of an atomizer, where the amount of additive added depends on the strength and duration of the pressure gas flow, but only a metered amount of additive is always transferred into the gas flow path. be. This can be done before the gas flow starts, but it is also possible to do it during the gas flow.

The device according to claim 5 for carrying out the method according to the invention is characterized in that the gas flow channel leading to the splicing chamber is at least 100 mL for suspensions having the above-mentioned properties. It consists in having one metering device. Embodiments of the device according to the invention are set out in claims 6 to 10.

Dosing devices themselves are generally known. For example, electrically, mechanically, hydraulically or otherwise operated metering valves are known. Metering valves are also known which are controlled by pressure impulses of the medium to be metered, which are fed into the supply conduit.

The metered quantity is always independent of the type of control and the duration of the control process.

According to one embodiment of the invention, the metering device has a suspension discharge element that is exposed to the gas flow.

This member is placed in the center of the flow, for example.
It can be a dish-shaped discharge member that can be closed by a valve. The metering device can be connected, for example, to a storage tank for suspensions. A pump can also be connected to the connecting conduit, which pump can also be switched. By switching the pump to 1 connection, pressure is applied in the line leading to the metering device, which causes the metering device itself to react and discharge the metered suspension into the gas flow path. . This metered suspension discharge always takes place only once per pressure increase.

A separate release element or a separate metering device can be provided for the oil-containing component of the suspension; this ensures that the suspension does not have stability over time; This is particularly advantageous in cases where stirring may be required.

Further advantages of the invention can be obtained if the pressure gas metering valve is arranged upstream of the metering device. In this case, it is thus possible to arrange two control devices common for the pressure gas metering valve and the suspension metering device or pump.

It is advantageous for the metering device and/or the pump to be controlled by a contactless switch which is responsive to the movement of the yarn feeder. The pressure gas metering valve can also be controlled by a contactless switch responsive to the movement of the yarn feeder, said contactless switch having an operative connection to a switching device. The switching device itself can have an operational connection to the pressure gas metering valve and a further operational connection to the metering device and/or to the metering device. A second contactless switch of the metering device reservoir is not required in this case.

The advantages provided by the present invention are particularly recognized in the following points. That is, according to the present invention, in addition to the mechanical and pneumatic means for achieving splicing by tin rising, there is also the addition of a sprocket to enable splicing by tin rising, which was hitherto impossible. means and
Additional means are provided for improving splicing effects by tin-rising where previously processes were already possible but did not provide the necessary quality and strength.

The invention will now be explained with reference to the illustrated embodiment.

The device for joining the first thread 12 and the second thread 13 by tin-rising is designated as a whole by 11. Thread 1
3 reaches the device 11 from the feeding bobbin. The thread 12 also extends from the winding bobbin to the device 11.

The device 11 has two sheets 29, 30 mounted on a machine frame, not shown in detail, which are connected to each other by a support 31. A splicing chamber block 32 is attached to the support 31 and has a longitudinal groove 33 which can be closed by a lid 34. When the lid is open, both threads are inserted into the longitudinal groove 33. Opening edges 35 and 36 of the vertical groove 33 are rounded. Gas flow path 3
7 opens into the inner chamber of the splicing chamber block 32, which is formed by the longitudinal groove 33 and the lid 34. The gas flow passage extends to a pressure gas metering valve 39. A pressure gas tank 39a is arranged on the pressure gas inlet side of the pressure gas metering valve 39. On the -stream side of the pressure gas tank is an adjustable pressure reducer 39b. Conduit 40 connects pressure gas metering valve 3
9 can be connected to a pressure gas source.

The yarn feeder 42 has a device (not shown) for locating and holding the yarn end of the first yarn 12. Tip tightening device 5
2 is the upper side of the splicing chamber block 32 and the thin plate 29
The pre-tightening device 53 is located below the tin rising chamber block 32 and the thin plate 30. Both pre-tightening devices each consist of two parts. The tip tightening device 52 is a fixed tightening piece 5
4 and a controllable clamping body 55, which clamping body 55 is pivotable about a hinge pin 56 and has a
ζ-57, which is controlled via a cam disc (not shown) via ζ-58.

The pre-clamping device 53 has a fixed clamping piece 59 and a controllable clamping body 60, which, like the clamping device 52, is controlled by a cam disc, not shown. . The clamping piece 54 is connected to the thin plate 29 by a curved member 61.

The clamping piece 59 is connected to the thin plate 30.

The drawing further shows a pivotable double-armed yarn feeder 62, which has a pin 63 and an arm 6 attached thereto.
It consists of 4.65. The yarn feeder 62 is rotatably mounted on a shaft 66 connecting the lamella 29 to the lamella 30. A par 67 is movably connected to pin 63 for pivoting yarn feeder 62 about axis 66.

The yarn feeder 62 can be pivoted from the illustrated yarn receiving position to the yarn discharging position. The rotation plane of the arm 64 is the chamber block 3
On the upper side of 2, the pivot plane of the arm 65 is located on the lower side. In the yarn receiving position, both arms of the yarn feeder 62 are located in the optical path of both yarns 12, 13, which lie parallel after the yarn feeders 42 and 46 have swiveled into their yarn release position.

Each arm of the yarn feeder 62 has two parallel yarn receiving slits of different depths. As can be seen from the drawings, the thread receiving slit 71 of the arm 64 is deeper than the thread receiving slit 70. Similarly, the yarn receiving slit 72 of the arm 65 is deeper than the yarn receiving slit 73. These thread-receiving slits of different depths are each arranged such that the shallower slit of one arm is aligned with the deeper slit of the other arm. When the yarn feeder 62 is in the yarn receiving position, the system receiving slot is located approximately in the pivot plane of the yarn feeder 42,46.

Each arm of the yarn feeder has a controllable yarn cutting device, in this case a yarn cutting device 74 is assigned to arm 64 and a yarn cutting device 75 is assigned to arm 65. Each thread cutting device consists of two scissor-like cooperating cutters. One of the cutters is in each case connected to the associated arm, and the other cutter, in each case on the side of the splicing chamber block 32, is mounted pivotably about an axis 66. For example, a cutter 76 of a thread cutting device 74 is coupled to the arm 64;
In contrast, the cutter 77 of the same thread cutting device is pivotably mounted. The cutter 78 of the thread cutting device 75 is connected to the arm 65, whereas the cutter 79 of the same thread cutting device 75 is pivotably mounted. The cutter 77 is pressed against the cutter 76 by a coil spring.

The cutter 79 is also connected to the cutter 78 by the coil spring 81.
is being invaded by The coil spring 81 is supported by a disk 82 attached to the shaft 66. The other coil spring, which is not shown in the drawing, is supported by a pivot arm 83 which is rotatably mounted on the shaft 66 and which supports the lid 34 of the splicing chamber block 32. The M34 has inserts 84.85 made of sealing material, which are brought into contact with the lines 86.87 of the flute 33 during closure of the lid, so that pressurized air and the individual fibers are laterally removed from the splicing chamber 32. This prevents them from escaping. The yarn feeder 62, the yarn cutting device 74, 75 and the pivot arm 83 of the lid 34 not only have one common pivot axis 66;
- Can be rotated together. For this purpose, the pivot arm 83 supports, at its rear end, A-89, which abuts against the pin 63 under the action of a spring. Both cutters 76 and 78 are connected to the arm 64 or 65, whereas the pivotable cutters 77 and 79 are carried together during the pivoting of the yarn feeder 62 under the action of coil springs 80,81. be done. This entrainment of cutters 77 and 79 is limited by adjustable stones 891.92. This adjustability of the strut knob ξ- is achieved by tightening screw 103,
109. This makes it possible to precisely adjust the point in time at which the thread end is cut off to match the point in time at which pressurized air enters or blows in. Now, when the yarn feeder 62 is pivoted to the left, the yarn cutting devices 74 and 75 are closed together, and at this time the lever 10a of the cutter 77 and the similar lever 107 of the cutter 79 are separated from the pin 63.

The thread cutting device is then closed like scissors. Yarn feeder 62
When the thread is pivoted back to the thread receiving position, the pin 63 is brought into contact with the threads 106, 107. As a result, the thread cutting device opens again into a scissor-like manner when a further pivoting takes place. The thread cutting devices 74 and 75 are arranged in each case at the thread receiving slot in which the thread end to be cut off is located, i.e. at the thread receiving slot 7 in the arm 64.
1 and the thread receiving slit 72 in the arm 65, it is arranged to be actuated.

The pressure gas metering valve 39 can be controlled by a contactless switch 93 which is responsive to the movement of the yarn feeder 62 and whose position can be adjusted by means of a tightening screw 110 at the support 31 and by a limit switch 94. can be adjusted and controlled by For this purpose, parts 39.93 and 94 are connected to an electrical switching device 95. The adjustability of the contactless switch 93 makes it possible to precisely adjust the gas injection start point in relation to the position of the yarn feeder 62 and the gas injection end point in relation to the position of the yarn cutting device and the tip cutting point. make it possible to The drawing shows a non-contact switch 93.
A lead 96 extending to the pressure gas metering valve 39 and a lead 97 extending to the pressure gas metering valve 39 are shown. The limit switch 94 has two switches 98 and 99 for adjusting the blowing time and an indicator 100 for indicating the adjusted blowing time.

As can be seen from the drawings, some parts of the device 11 have special thread guiding contours. This can be seen, for example, in the suction slit nozzle 45° end clamping device 52.53 of the yarn feeder 42 and the thin plate 29.30.

The gas flow channel 37 has a metering device 111 for the suspension 112. There is a passage constriction 121 in the metering device 111 , the throttle cross section of which can be adjusted by means of an adjusting screw 119 . Suspension outlet 113 further exposed to gas flow
, which consists of a piece of tubing that extends into the constriction 121 . The free cross section of the suspension outlet 113 can be adjusted by means of an adjusting screw 120, which at the same time also adjusts an electromagnetic metering valve (not shown) for the suspension. Via conduit 118 metering device 111 connects pump 11
5. Pump 115 is attached to the bottom of storage tank 114 which receives suspension 112.

Pressure gas metering valve 39 is arranged upstream of metering device 111 . The switching device is connected to the metering device 111 by a line 116 and to the pump 115 by a line 117, so that the metering device 111 and/or the pump '115 can be selectively controlled by the contactless switch 93. be able to.

In the illustrated embodiment, the two-switch device 95 is adjusted in such a way that a switch pulse is selectively emitted via all three connecting conductors 97, 116, 117 when the contactless switch 93 is actuated in response. Ta. The duration of the switching pulses emitted via conductors 97 and 117 corresponds to the blowing time. One short switching pulse is emitted via conductor 116 during the blowing period.

During the flow of pressure gas, the pump 115 applies pressure to the conduit 118 and then a metered amount of suspension is fed into the flow of pressure gas.

Next, the working style of the apparatus of the present invention will be explained using a yarn splicing process as an example.

The yarns 12 and 13 reach the yarn receiving slit of the fiber device 62 by the return rotation of the feeder 42 and the cow 6. The above-mentioned thread guide profile guides the first thread 12 coming from the pay-out bobbin between the clamping piece 54 and the clamping body 55 of the end clamping device 52 and between the thread receiving slings 1 and 0 of the yarn feeder 62. It is useful for inserting it into the file 2. The second yarn is located in the yarn receiving slits 71 and 73 of the same yarn feeder.

By the way, a control transmission (not shown) moves two cam discs (also not shown).
67 is in the direction of arrow 10, and 58 is in the direction of arrow 1.
It is pulled in the direction of 05.

- During the movement of ζ-67, both arms of the yarn feeder 620 and the pivot arm 83 of the lid 34 pivot to the left in the drawing. Due to the different depths of the thread receiving slits, the threads are inserted into the longitudinal groove 33 in a state where they cross each other. Both thread cutting devices are still open. Immediately before reaching the end position, which is also the unreleased position for the yarn feeder 62, the lid 34 has already opened its insert 84°8.
5 to the edges 86 and 87 of the longitudinal groove 33 of the scouring chamber block 32.

At the same time, both end clamping devices 52,53 are closed together, whereas the cutters 77 and 79 hit the stops 91 and 92. At the same moment, the non-contact switch 93 detects the approach of the arm 65 of the yarn feeder 62. The non-contact switch 93 switches the pressure gas metering valve 39 and the pump 115 into connection via an electrical switching device 95 for the duration of the injection set by the limit switch 94 . The stored pressure gas in the splicing tank 3Qa flows into the splicing chamber 32.

At the same time, a subsequent pressure gas of regulated pressure flows in via the pressure reducer 39b. During a blowing period of, for example, 2 seconds, both arms of yarn feeder 620 pivot further to the left in the drawing.

As a result, both arms finally reach their end position. After switching to the connection of the pressure gas metering valve 39 and the pump 115, a short switch ξ gas is emitted to the metering device 111, so that the metered suspension quantity is transferred into the flowing pressure gas. reach. During this time, the thread cutting device operates, and the excess thread end is cut off and sucked out.

By adjusting the tightening force of the tip tightening device to be weak,
A subsequent withdrawal of the fluff thread, if necessary during the splicing process, must be ensured.

By means of the cam disk, the yarn feeder 62 is moved back to its starting position without delay, by causing the gear 67 to be returned in the opposite direction to the arrow 104 and the ζ-58 to be returned in the opposite direction to the arrow 105. The pre-tightening device is opened. At the beginning of the return movement described above, the thread cutting device initially remains closed for only a limited time, ie until the pin 63 reaches the two ends ζ-106 and 107. Only after this can the cutting device be opened again. The lid 34 is also opened with a time delay and is only opened again once the pin 63 reaches the end ζ-89 of the pivot arm 83. To return the thread cutting device and completely open the lid 34, the pin 63 is pressed ? -67
This is achieved only when the object is returned to the position shown.

Yarns spliced by compressed air are
The thread receiving slit 73. of the now open tip tightening device 75° arm 65. Thread receiving slit 73 of arm 64
．． Before splicing chamber 32 opened, arm 64
The yarn receiving slit 70 and the opened tip tightening device 52 are located within the yarn receiving slit 70 and the opening end tightening device 52. However, when the operation is resumed at the yarn winding section, the yarn quickly moves to device 1 based on the winding tension.
Escape from 1.

The device 1.1 can be provided stationary or movably. The device 11 can be selectively provided at all winding stations or working stations of the textile machine or can be activated selectively and sequentially at different working stations.

The invention is not limited to the embodiments shown, but can further be implemented in various different ways.

[Brief explanation of the drawing]

The drawing is a schematic illustration of parts of an automatic pressure gas splicing apparatus according to an embodiment of the present invention.

Claims (1)

[Claims] ■ In a method of splicing a first yarn and a second yarn using a pressure gas splice song, (a) the fiber processing technical characteristics of the fibers, the agglomeration of the fibers, and the adhesion of the fibers to each other; (0) A substance that lubricates mechanical parts and prevents corrosion of mechanical parts; Contains the substances described in (a) and (b) above. A method for splicing by pressure gas splicing, characterized in that the metered suspension is supplied to a pressure gas before the pressure gas enters the splicing chamber. 2. The method for splicing yarn according to claim 1, which uses a suspension containing hydrosyl silicate, oil, and water. 3. The method for splicing yarn according to claim 2, wherein water containing 0.2 to 0.8% hydrosyl silicate and OO3 to 0.5% oil is used as a suspension. 4. Transferring the metered amount of suspension into a gas flow path leading to the splicing chamber, entraining it little by little and finely distributing it by a pressurized gas flow.
A method for splicing threads as described in any one of the paragraphs. 5. It has a splicing chamber for splicing two threads that can be inserted into the splicing chamber by pressure gas splicing, a gas flow path that opens into the splicing chamber, and a pressure gas metering device, and Distribution path (3
7) has at least one metering device (111) for the suspension (112), and the suspension has: Substances that improve twisting, adhesion between fibers, and strength as yarn, and prevent adhesion between fibers; (b) Substances that lubricate mechanical parts and prevent corrosion of mechanical parts. ) and (b) A device for splicing yarn by pressure gas splicing, characterized by containing the substance described in (b). 6. Claims in which the metering device (11], ) for suspensions has a suspension discharge element (113) exposed to a gas flow and controls said suspension discharge element (113) A device for piecing yarns according to item 5. 7. The metering device (111) for the suspension (112) is connected to the storage tank (114) for the suspension (112), and the metering device (ill) for the suspension and the storage tank (1
14) A device for splicing yarn according to any one of claims 5 or 6, wherein a pump (115) is connected between the yarn splicing device and the yarn splicing device. 8. According to any one of claims 5 to 7, in which a specific release element or a specific metering device is provided for the oil-containing component of the suspension (112). A device for splicing threads. 9 Patent claim in which a pressure gas metering valve (39) is arranged on the flow side of the metering device (111) for suspensions, and the pressure gas metering valve (39) is adjustable and controllable. A device for splicing yarn according to any one of items 5 to 8. 10 The metering device (111) and/or pump (115) for the suspension can be controlled by a non-contact switch (93) that operates in response to the movement of the yarn feeder (62); The contactless switch has an operating connection (96) extending to a switching device (95) which in turn extends to a pressure gas metering valve (39), a metering connection for suspensions. Device (111) and/or pump (115)
Device for splicing according to any one of claims 5 to 9, characterized in that it has a further working connection (116, 117) extending to.