JPH02269820A - Piecing system in spinning machine - Google Patents

Abstract

PURPOSE:To remove waste threads, fly, etc., clogged in a negative-pressure type storage mechanism by equipping a truck travelling along the mount of a spinning machine with a means to inject compressed air toward the suction port of said storage mechanism. CONSTITUTION:A spinning machine is equipped with a filament-forming mechanism 2, a take-up mechanism 3, a negative-pressure type storage mechanism 4 and a winding mechanism, successively in this order, and a truck travelling along the spinning machine is fitted with a compressed air injection means 85 along with a piecing device, a upper thread suction means, a lower thread suction means, etc. Thus, waste threads and fly clogged in said storage mechanism or fly etc., adhered to a tension-imparting mechanism 5 can be removed.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is installed in a spinning machine and has a yarn forming mechanism or
The present invention relates to a device for splicing yarn sent out from a take-up mechanism and yarn pulled out from a package of a winding mechanism using splicing means.

(Prior art) Generally, in a spinning machine such as an open-end spinning machine or a binding spinning machine, when a yarn breakage occurs during the production of spun yarn, the splicing device moves to the corresponding position and the upper thread The suction means sucks the yarn sent out from the take-up mechanism and conveys it to a splicing means such as a knotter or splicer, and the bobbin thread suction means sucks the yarn from the package of the winding mechanism to take out the yarn. The yarn is conveyed to a splicing means, and these yarns are spliced by the splicing means. During the splicing operation, a spun yarn is formed by the yarn forming m top and sent out from the take-up mechanism, so for example, a negative pressure storage ellipse as described in JP-A No. 53-2633 is used. is installed to suction and store a predetermined amount of yarn.

(Problem) In the above-mentioned spinning machine, when waste yarn, fluff, etc. gets caught in the suction pipe next to the negative pressure storage m, the suction force of the negative pressure source connected to the storage mechanism alone can remove the waste yarn, etc. It is impossible to remove the threads from the inner wall of the suction tube and transport them to a dust box, etc., and the threads and fluff that were sucked in later pile up on the threads that were caught earlier and become completely clogged. The tube must be removed and cleaned, and since the suction port of the negative pressure storage mechanism is installed close to the take-up mechanism, the thread sent out from the take-up mechanism is transferred to the upper thread suction tube. There have been problems such as the suction being sucked into the negative pressure storage mechanism instead of being sucked into the yarn splicing mechanism, resulting in a poor yarn splicing success rate.

(Objective) The first object of the present invention is to make it possible to remove waste threads, fluff, etc. that are clogged within the negative pressure storage mechanism.

A second object of the present invention is to make the needle thread suction mechanism reliably suck the yarn sent out from the yarn forming mechanism or the take-up mechanism, thereby improving the yarn splicing success rate.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a yarn splicing device for a spinning machine according to the present invention includes a yarn forming mechanism, a take-up mechanism, a negative pressure storage mechanism, and a winding m oval. A trolley is movably installed along the longitudinal direction of a spinning machine machine in which yarn splicing means and thread forming mechanism or take-up mechanism are suctioned onto the trolley. an upper thread suction means for transporting the upper thread to the thread splicing means;
The winding mechanism is equipped with a bobbin thread suction means for sucking the yarn of the package and conveying it to the splicing means, and is also equipped with a compressed air injection means for jetting compressed air toward the suction port of the negative pressure storage mechanism. It has a sinusoidal structure. In addition, by attaching the compressed air injection means to the needle thread suction means, this can be carried out reliably.

(Example) The structure of one example of the textile machine of the present invention will be explained based on the drawings.

Reference numeral 1 denotes a draft mechanism installed on a machine stand 10, which is composed of a back roller 11, a middle roller 12, and a front roller 13, and stretches the staple fiber bundle to a predetermined magnification and aligns it. Further, the back roller 11 is equipped with means for separating the drive shaft from the roller and stopping the rotation. Reference numeral 2 denotes a yarn forming machine installed on the machine stand 10 adjacent to the front roller 13 of the draft t[f41, which sucks the staple fiber bundle supplied from the front roller 13 and applies a turning force. It is designed to form a bound spun yarn. As the yarn forming device 2, for example, one described in Japanese Patent Application Laid-Open No. 61-836324 can be used. Reference numeral 3 denotes a take-up mechanism installed at a predetermined interval below the yarn forming mechanism 11m2, and is composed of a drive roller 31 and a short cantilevered nip roller 32, and is configured to collect the yarn sent out from the yarn forming mechanism 2 at a predetermined distance. It is designed to be picked up at speed. At the tip of the nip roller 32, a taper 32a of 90° or less is formed.

Reference numeral 4 denotes a negative pressure storage mechanism installed below and adjacent to the take-up mechanism 3, one end of which is opened at the yarn running position, the other end of which is connected to a negative pressure duct 42, and has a substantially flat passage. The suction tube 41 has a suction tube 41. 5 is a tension applying mPs attached to the lower part of the suction pipe 41 of the negative pressure storage mechanism 4
It is composed of a tensor 51, a cutter 52, a slab catcher, etc. 6 is a fluid conveyance mechanism formed to cover the yarn forming mechanism 2 and the take-up mechanism 3;
The details are as shown in FIGS. 2 and 3. In FIG. 9, 61 is a fluid passage main body having a substantially U-shaped cross section, and a cover plate 62 is attached to the main body so that it can be opened and closed and can be attached and detached. . The thread forming mechanism 2 is formed to cover the lower circumferential surface of the thread forming mechanism 2. Further, the wall portion of the fluid passage main body 61 is opened so that the drive roller 31 of the take-up mechanism 3, the shaft of the nip roller 32, etc. are located within the passage main body 61 in a non-contact state. Further, a guide wall 61b is formed to accommodate the entire nip roller 32 and to allow the passage 61a to bypass the tip of the roller 32. In order to minimize the amount of detour of the passage 61a, it is necessary to shorten the length of the nip roller 32. Then, the fluid passage main body 61
The lower part thereof is connected to the suction port 41a of the suction pipe 41 of the above-mentioned negative pressure storage tank 4.

The above-mentioned cover plate 62 includes an upper thread suction means 82 of the thread splicing device 8.
A hole 62a is formed to serve as an insertion hole and a peephole for the suction tube 41 of the negative pressure storage device #14, and a thread threading slit is formed up to the lower end of the cover plate 62.

Further, a hole 6b is bored in the side wall near the take-up mechanism 3 to allow the atmosphere to flow in.

Passage 6 formed by the above-mentioned passage main body 61 and cover plate 62
1a needs to have a streamlined shape and a smooth surface that does not damage the yarn.

Further, the suction air flow of the negative pressure storage mechanism 4 described above is set based on the amount of inflow air in the fluid transfer device I/F 46.

7 is a winding mechanism installed below the tension applying mechanism 5, which has a groove for aS, and has a drive roller 71 attached to the line shaft via a clutch and a bobbin rotatably mounted thereon. It is composed of a cradle 72 having a pressure means for bringing the bobbin into contact with a drive roller 71 with a predetermined surface pressure, and winds up the yarn sent out from the take-up 11 mechanism 3.

The draft mechanism 1 to the winding mechanism 7 described above form one unit, and a plurality of units are installed at predetermined intervals in the longitudinal direction of the machine stand 10 to form one spinning machine.

The yarn splicing device 8 includes a guide 10a formed on the machine stand 10,
10b, a thread splicing means 82 such as a knotter or tin slicer attached to the carriage 81, an upper thread suction means 83 rotatably attached to the carriage 81, and The lower thread suction means 84 is movably housed, and the compressed air injection means 85 is movably attached to the upper thread suction means 83. The details of the compressed air injection means 85 are as shown in FIG.
This is a compressed air injection main body which is movably housed in a, and grooves are formed at both ends to which O-rings 87 for sealing are attached. The compressed air injection main body 86 has a compressed air chamber 86a formed therein and a hole 86b communicating with the outer peripheral surface thereof. As shown in FIG.
When moving to the yarn suction position of 3, the angle (θ1) with respect to the yarn running direction is 60 to 90 degrees, and the negative pressure storage device'! R
It is necessary to form the hole so that the angle (θ2) of the hole 4 with respect to the suction port is inclined by 15 to 30 degrees in the direction of the notch 32a of the nip roller 32 of the take-up mechanism 3, as shown in FIG. Reference numeral 88 denotes a joint screwed onto the air injection main body, to which a compressed air supply pipe 89 having a pressure regulating valve (not shown) and a gate valve (not shown) is connected.

Therefore, when the needle thread suction means 83 moves to the thread suction position below the take-up mechanism 3, the hole 86b of the compressed air injection main body 86
The compressed air is injected from the passage 61a of the fluid passage main body 61.
It sucks the threads that are conveyed through it.

If the above-mentioned compressed air injection means 85 is movably attached to the upper thread suction means 83, the injection direction, injection position, etc. of the compressed air can be freely changed, but there is no need to change these. For example, it is configured to be fixed to the needle thread suction means 83.

The above-mentioned draft machine #11, take-up mechanism 3, winding mechanism 7,
The yarn splicing device 8 and the like are controlled by a control device including an operation setting input circuit, a memory circuit, a comparison calculation circuit, an operation command circuit, etc., or a microcomputer.

If yarn breakage occurs during yarn formation or winding operations in the above-mentioned spinning machine, the rotation of the back roller 11 of the draft mechanism 1 is stopped based on a signal from a control device (not shown), and the yarn formation is stopped. At the same time as the feeding of the yarn from the mechanism 2 is stopped, the clutch (not shown) of the drive roller 71 of the winding mechanism 7 is activated to disconnect it from the line shaft, and the rotation of the package 100 is stopped. The yarn splicing device 8 moves to the corresponding unit position and starts the yarn splicing operation. First, the needle thread suction means 83 operates to apply negative pressure to the suction tube 83, and the compressed air injection means 85 operates to supply compressed air from the compressed air supply tube 88 into the compressed air injection main body 86. It is ejected from the hole 86a. When the suction tube 83 rotates from the standby position to the yarn suction position in this state, the compressed air jetted from the hole 86a removes the fluff attached to the tensor 51 of the tension applying mechanism 5 or the cutter 52, etc. , blow away waste threads, etc. Then, the tip of the suction tube 83a is inserted into the hole 62a of the cover plate 62, creating a negative pressure storage device' as shown in FIG. T44 suction tube 41
When moving to the suction position upstream of the suction port 41a, the compressed air injected from the hole 86a causes the negative pressure storage device 4 to
The fluff, waste threads, etc. in the suction 7f41 of the 114 are blown away and sucked into the duct 42. At this time, the suction port of the negative pressure storage mechanism 4 is cut off from the passage 61a by the compressed air injected from the compressed air injection means 85, and the suction pipe 41 of the negative pressure storage mechanism 4 is injected with compressed air. The compressed air injected from the means 85, the air suctioned from the hole 62a of the cover plate 62, and a part of the air in the passage 61a are suctioned, and most of the air in the passage 61a is absorbed by the suction pipe of the upper thread suction means 83. 83a
is attracted to.

Next, the draft mechanism 1 operates to draw the staple fiber bundle to a preset fs rate and supply it to the aligned yarn forming mechanism 2, and the bound spun yarn formed in the yarn forming mechanism 2 is air-filled. Spinning with the flow. At this time, since a suction force is applied to the passage 61a of the fluid transport mechanism 6 by the upper thread suction means 83, the air ejected from the yarn forming mechanism 2 and the outer peripheral surface of the yarn forming mechanism 2 and the fluid The air sucked from the gap in the conveying mechanism 6 becomes an air flow in the passage 61a and moves in the same direction as the running direction of the yarn, and the upper thread suction means 83
is being sucked into the suction tube 83a. Therefore, the yarn sent out from the yarn forming mechanism 2 is conveyed by the air flow within the passage 61 toward the suction port of the suction tube 83a of the needle thread suction means 83 and is sucked.

After the yarn suction operation is completed, the hole 86 of the compressed air injection main body 86
The injection of compressed air from a is stopped, and the upper thread suction means 83 rotates to convey the yarn to the splicing means 82.

Simultaneously with this operation, the bobbin thread suction means 84 operates, and the winding mechanism 7
The yarn is suctioned from the package 100 mounted on the cradle 72 and conveyed to the splicing means 82. When each yarn is conveyed to the splicing section, the splicing means 82 is activated to splice the yarns. The above-mentioned upper thread suction means 83 and lower thread suction means 8
When each yarn is conveyed to the splicing section of the splicing means 83, the suction force disappears and each thread returns to the standby position.

In the above-described operation, the needle thread suction means 83 sucks the yarn and conveys it to the splicing means, and when the yarn is fixed to the splicing section, the yarn sent out from the take-up mechanism 3 cannot be wound. Until it starts, it is sucked into the negative pressure storage mechanism 4 and stored in a U-shape.

When the yarn splicing operation is completed, the clutch of the winding mechanism 7 is activated to connect the drive roller 71 to the line shaft and wind the yarn. The winding speed of the yarn by the winding 814117 is 2 to 3 times higher than the yarn delivery speed of the take-up a ellipse 3.
% faster, the yarn stored in the negative pressure storage mechanism 4 during the splicing operation is wound into the package 100 until it reaches a preset amount.

(Effects of the Invention) The yarn splicing device for a spinning machine of the present invention has a yarn forming mechanism, a take-up WU side, a negative pressure storage mechanism, and a winding mechanism arranged in sequence in the longitudinal direction of the spinning machine machine. A carriage is movably installed along the carriage, and the carriage is equipped with a yarn splicing means, a yarn forming mechanism or a take-up I! An upper thread suction means for suctioning the yarn sent out from the side and conveying it to the splicing means, and a lower thread suction means for suctioning the yarn of the package of the winding mechanism and conveying it to the splicing means, Since the structure is equipped with a compressed air injection means that injects compressed air toward the suction port of the negative pressure storage mechanism, the compressed air can remove waste threads, fluff, or It is possible to reliably remove fluff and the like that adhere to the tension applying mechanism each time a yarn splicing operation is performed.

Furthermore, the threads sent out from the thread forming ell mechanism or the take-up mechanism can be reliably sucked, and the success rate of thread splicing can be improved.

This can be reliably carried out by attaching the above-mentioned compressed air injection means to the needle thread suction means.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of a spinning machine according to the present invention. FIG. 2 is an enlarged schematic diagram of the second part in FIG. 1. FIG. 3 is a view along YY arrow in FIG. 2. FIG. 4 is an enlarged schematic diagram of the X portion in FIG. 2. FIG. 5 is a schematic diagram showing the state of air flow during thread suction by the needle thread suction means. 1 Nidraft a structure, 2: Yarn splicing formation t11 side, 3: Take-up mechanism, 4: Negative pressure storage mechanism, 5: Tension applying mechanism, 6: Fluid conveyance fissure, 7: Winding RtfA,
8: Yarn splicing device, 41.83a: Suction pipe, 61: Fluid passage main body, 62: l! Board, 8, trolley, 8
2: Thread splicing means, 83: Upper thread suction means, 84: Lower thread suction means, 85: Compressed air injection means, 86: Compressed air injection main body, 87: 0 ring, 88: Joint, 89
: Compressed air supply pipe, Applicant: Toray Engineering Co., Ltd. 1 Figure 5 Procedure amendment writing method> 1999 Patent Application No. 91264 Name of invention Yarn splicing device for spinning machine July 25, 1999 (shipped) 3. Insert Detailed Description of the Invention J in the specification to be amended.

Claims (1)

[Claims] 1) A cart is movably installed along the longitudinal direction of a spinning machine machine in which a yarn forming mechanism, a take-up mechanism, a negative pressure storage mechanism, and a winding mechanism are sequentially arranged. The trolley is provided with a thread splicing means, an upper thread suction means for sucking the yarn sent out from the yarn forming mechanism or the take-up mechanism and conveying it to the splicing means, and suctioning the yarn of the package of the winding mechanism. A spinning machine characterized in that the spinning machine is equipped with a bobbin suction means for transporting the bobbin thread to the splicing means, and a compressed air injection means for injecting compressed air toward the suction port of the negative pressure storage mechanism. Yarn splicing device. 2) The yarn splicing device for a spinning machine according to claim 1, characterized in that the compressed air injection means is attached to the needle thread suction means.