JPH036610Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention overlaps two yarns pulled out from a bobbin package in a yarn feeding section of a drawing machine, false twister, or drawing false twister. The present invention relates to an improvement in a device that injects compressed air into the combined yarns to entangle and splice the yarns.

(Prior Art) Generally, a stretching machine, a false twisting machine, a stretching false twisting machine, etc. are operated continuously from the viewpoint of productivity and the like. Therefore, it is necessary to supply yarn continuously, and it is necessary to prepare a plurality of bobbin package cages for one processing weight, and pull out the tail thread of the package cage and the head thread of other package cages to splice the threads. This allows continuous yarn supply.

When performing the above-mentioned splicing operation, a device is used that has a high splicing strength and can make the spliced area small.The device is configured with a thin device that injects compressed air orthogonally to the hole that supports the yarn. An intertwining nozzle with a hole drilled therein, and a pair of yarns that are installed close to both sides of the nozzle, and that the ends of the two yarns are inserted into the holes of the nozzle from both sides and held in an overlapping state. It is composed of a strip holding part.

A yarn splicing device with such a configuration is, for example,
It is described in Japanese Patent Application Laid-open No. 61-1534 or Japanese Patent Application Laid-Open No. 57-81068.

(Problem to be solved by the invention) In the above-mentioned yarn splicing device, the two yarns are aligned and positioned at the intertwined portion, and then compressed air is jetted to perform the intertwining treatment and splice the yarn. The thickness is
It becomes approximately 1.5 times or twice the thread thickness. Therefore,
When false twisting is applied using a false twisting device, the number of twists at the yarn seam decreases, resulting in uneven twisting.
In addition, since the yarn seam is thicker than the thread, there are problems such as uneven weaving and uneven dyeing.

(Purpose) An object of the present invention is to provide a yarn splicing device in which the thickness of the yarn seam portion is approximately the thickness of one thread.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the yarn splicing device of the present invention includes an entangling nozzle in which a compressed air injection hole is bored perpendicularly to a groove that supports the yarn; a pair of thread clamping parts installed close to both sides of the nozzle, which insert the two thread end parts into the grooves of the nozzle from both sides and sandwich them in an overlapping state; and a bracket to which these parts are attached. In the yarn splicing device, the yarn clamping portion has a support surface at an upper end;
It has a support shaft attached to the bracket so as to rotate with its axis perpendicular to the bracket, a press surface facing the support surface, and a press piece attached so as to move and rotate in a direction perpendicular to the bracket. At the same time, the pair of yarn clamping parts are configured to simultaneously rotate in opposite directions.

(Example) The configuration of the yarn splicing device of the present invention will be explained based on the drawings.

Reference numeral 1 denotes a bracket, which is adapted to be attached to a machine frame (not shown) of a yarn splicing carriage. Reference numeral 2 designates an entangling nozzle, which has a thread support groove 2a and a small hole 2b for compressed air injection so as to communicate orthogonally with the groove 2a. A compressed air supply pipe 3 is connected to the end of the pore 2b. Reference numeral 4 denotes a bearing on which the support shafts 5 and 8 are rotatably mounted, and is fixed to the bracket 1. An arm 6 and a gear 7 are fixed to the lower end of the support shaft 5. A gear 9 is fixed to the support shaft 8 and meshes with the gear 7 described above, so that when the arm 6 is rotated, the gears 9 rotate in opposite directions. 10 is an air cylinder, and an arm 1 is attached to the end of the rod 10a.
1 is fixed and is adapted to be moved along the guide wall 1a of the bracket 1. Reference numerals 12 and 13 denote presser pieces, which are rotatably mounted on the arm 11 so as to face the above-mentioned support shafts 5 and 8, respectively. When the arm 11 is lowered, the lower surfaces of the presser pieces 12 and 13 come into contact with the end surfaces of the support shafts 5 and 8, so as to clamp the yarn.

The yarn splicing operation by the above-mentioned yarn splicing device will be explained.

First, the compressed air supply path to the air cylinder 10 is switched, the rod 10a is made to protrude, and the arm 11 is
At the same time, the holding pieces 12 and 13 are raised and the support shaft 5,
8 to form a gap between the two. Then, as shown in FIG. 3, two threads 15a and 15b are inserted into the support groove 2a of the nozzle 2 from both sides,
At the intertwining position, the yarn ends are aligned so that they overlap, and the yarns 15a and 15b are placed on the support shafts 5 and 8 at an angle of θ (approximately 45 degrees) with respect to the support groove 2a. (Figure 3-1). In this state, the compressed air supply path to the air cylinder 10 is switched, the rod 10a is retracted, and the presser piece 1 is removed together with the arm 11.
2 and 13 are lowered to sandwich the threads 15a and 15b. First, the arm 6 is rotated in the A direction as shown in Fig. 2, and the threads 15a and 15b located between the support shaft 5 and the support shaft 8 are pulled and cold drawn (Fig. 3-2). . Then, the threads 15a, 15
b is approximately 1/2 of the original thickness. Next, the arm 6 is returned to its original position, and a gate valve (not shown) attached to the compressed air supply pipe 3 is opened, and compressed air is injected from the small hole 2b into the support groove 2a. , intertwine the threads 15a and 15b. Through this operation, the thickness of the spliced yarn of the spliced yarn becomes approximately the same as the thickness of one yarn 15a or 15b. After this operation is completed, a gate valve (not shown) is closed to stop the injection of compressed air. Then, the compressed air supply path to the air cylinder 10 is switched, the rod 10a is made to protrude, the presser pieces 12 and 13 are raised together with the arm 11, a gap is formed between the support shafts 5 and 8, and the spliced yarn 15a is raised. , 15b from the support groove 2a to complete the splicing operation.

The unnecessary yarn ends 15a1, 1 are spliced into one yarn by the above-mentioned operation and protrude from the spliced part.
5b1 is cut with a cutter or the like.

(Effects of the invention) The yarn piecing device of the invention includes an interlacing nozzle in which a compressed air injection hole is perforated perpendicularly to the groove supporting the yarn, and two
A yarn splicing device comprising a pair of yarn clamping parts that insert the yarn ends of the book from both sides into the grooves of the nozzle and clamp them in an overlapping state, and a bracket to which these parts are attached. The clamping part has a support surface at the upper end, a support shaft that is attached to rotate with the axis perpendicular to the bracket, and a pressing surface that faces the support surface, and is movable in a direction perpendicular to the bracket. , and is formed by a pressing piece attached to rotate, and the pair of yarn clamping parts rotate in opposite directions at the same time, so that the yarn can be stretched and thinned during the entanglement process. The yarn can be spliced by twisting, and the yarn splicing portion has approximately the same thickness as one yarn. Therefore, it is possible to prevent uneven twisting from occurring at yarn joints due to the false twisting process, and also to prevent uneven weaving, uneven dyeing, etc. from occurring when fabricated.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing one embodiment of the yarn splicing device of the present invention. FIG. 2 is a schematic plan view.
FIG. 3 is a schematic diagram showing a yarn drawing operation in a yarn splicing operation. 1...Bracket, 2...Entangling nozzle, 4...
... Bearing, 5, 8 ... Support shaft, 6, 11 ... Arm, 7, 9 ... Gear, 10 ... Air cylinder, 12, 13 ... Holding piece, 2a ... Support groove,
2b...Pore.

Claims (1)

[Scope of utility model registration request] An interlacing nozzle is provided with a hole for jetting compressed air orthogonally to the groove supporting the yarn, and the entangling nozzle is installed close to both sides of the nozzle, and the ends of the two yarns are inserted into the groove of the nozzle, respectively. In a yarn splicing device comprising a pair of yarn clamping parts inserted from both sides and clamped in an overlapping state, and a bracket to which these parts are attached, the yarn clamping part has a support surface at an upper end and is attached to a bracket. It has a support shaft that is attached to rotate with its axis perpendicular to the bracket, a press surface that faces the support surface, and a press piece that is attached to move and rotate in a direction perpendicular to the bracket. A yarn splicing device characterized in that the pair of yarn nipping portions simultaneously rotate in opposite directions.