JPH0610367U - Thread - Google Patents

Abstract

(57) [Abstract] [Purpose] A cost reduction is achieved even when using a high-priced material for a yarn path used in a textile machine to prevent damage and breakage of the yarn during use. [Structure] A yarn path base portion 3 which is a sliding contact portion with a yarn in a substantially drum-shaped yarn path is made of alumina ceramics without micropores, and both ends of the yarn path base portion 3 are simply made of ceramics. By fixing the guide portion, it is possible to manufacture at a low cost even if the yarn path is enlarged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a yarn path used in all textile machines such as yarn making, spinning, weaving machines, and knitting machines.

[0002]

[Prior art]

 Conventionally, yarn paths used in textile machines such as spinning and knitting machines are made of metal or ceramics.

The surface of the metal yarn path is plated with chrome, but the use of the plated layer causes the metal surface of the rough surface of the yarn path itself to be exposed, which causes the thread and the thread path to slide. They had the drawbacks of rubbing, rubbing, and thread wear, damage, and breakage.

Further, in the ceramic yarn path, the ceramic itself is dense, but since there are micropores of several micron to several tens of microns, the micropores and the thread make sliding contact with each other, causing friction and abrasion, The yarn had the drawback of being worn, damaged or broken.

Therefore, in order to solve the above-mentioned drawbacks, a high-quality alumina ceramics yarn path having no fine pores on the surface has been developed. However, the raw material of the thread path is expensive, and a special forming / firing process is performed. However, the manufacturing cost becomes high, and a large yarn path is very expensive.

[0006]

[Problems to be solved by the device]

 The present invention is a composite of an expensive and high-quality alumina ceramic yarn path base portion and an inexpensive ceramic yarn path guide portion, so that the yarn due to friction and abrasion between the yarn path and the yarn when the textile machine is used. The purpose of the present invention is to provide a yarn path that prevents damage and cutting of the yarn and makes it possible to manufacture large-sized ones at low cost.

[0007]

[Means for Solving the Problems]

 The present invention is based on the above-mentioned conventional technology, and in view of the problems of the yarn being damaged or cut by friction and rubbing between the yarn path and the thread, and the cost increase due to the large size, the yarn in the substantially drum-shaped yarn path. By forming the yarn path base portion, which is in sliding contact with the yarn path, from alumina ceramics without micropores, friction and rubbing between the yarn path and the yarn are prevented, and both ends of the yarn path base portion are By fixing a general ceramics yarn path guide to the section, the expensive alumina ceramics yarn path base is set to the minimum necessary size, and the above-mentioned drawbacks should be solved. It was done.

[0008]

[Action]

 According to the present invention, the thread and the thread that have passed through the guide groove of the yarn path are slidably in contact with the smooth sliding surface without the fine holes in the guide groove valleys, and while vibrating in the loose state. Even if the traveling yarn and thread are momentarily contacted with the outer peripheral taper surface of the yarn guide section, they are not obstructed by the seam between the yarn guide base section and the yarn guide section, and naturally on the valley side sliding contact surface. Slip down and proceed.

[0009]

【Example】

 An embodiment of the present invention will now be described with reference to the drawings. 1 is a yarn path according to the present invention, and the yarn path 1 is a substantially drum shape in which a widened V-shaped guide groove 2 is provided in the central portion. The shape of the roller body is made of alumina ceramics at the center, and the flat drum-shaped yarn path base portion 3 is provided, and both end surfaces of the yarn path base portion 3 are made of general ceramics having a flat truncated cone shape. The yarn guides 4 and 4a are fixed, and the yarn guide 1 is used for all textile machines such as yarn making, spinning, weaving and knitting machines, and guides and guides yarns and yarns. is there.

The yarn path base portion 3 has a flat drum shape having a sliding contact surface 5 which is a trough of the guide groove 2 and tapered surfaces 6 and 6a continuously formed on both sides of the sliding contact surface 5. The through hole 7 is provided in the central portion, narrow circumferential surfaces are formed at both ends, and both ends are formed as fitting portions 8 and 8a. A fine powder of pure alumina (99.8% by weight after sintering) is formed into the above-mentioned shape, and the formed body is sintered into alumina ceramics having no pores in the following manufacturing process.

The molded body is charged into a muffle furnace and filled with an inert gas, and then hydrogen gas is replaced and filled for firing, or the molded body vacuum-sealed in a capsule is charged into a high-pressure container. At the same time, a gas such as argon is introduced into the high-pressure container, and hot isostatic pressing is performed to sinter under high temperature and high pressure, or the compact is pre-sintered to a state without pores, By subjecting such a pre-sintered body to hot isostatic pressing, micropore defects are removed to increase the density.

As shown in FIG. 2, the structure of the yarn path base portion 3 obtained as described above is transformed into aluminum ceramics without micropores, and then the surface of the yarn path base portion 3 is subjected to polishing treatment. As a result, a structure without micropores appears on the surface, and the openings on the surface of the yarn guide base portion 3 are removed to lubricate.

The yarn path guide portions 4, 4a form guide grooves 2 by the outer peripheral taper surfaces 9, 9a, the sliding contact surface 5 of the yarn path base portion 3 and the tapered surfaces 6, 6a. Protrusions 10 and 10a are provided on the peripheral edge of the inner end face of 4a, and the insides of the protrusions 10 and 10a form fitting recesses 11 and 11a of the fitting portions 8 and 8a. The top end portion projects slightly inward to form step portions 12, 12a between the taper surfaces 6, 6a of the yarn path base portion 3 in the guide groove 2 and the outer peripheral taper surfaces 9, 9a of the yarn path guide portions 4, 4a. ing.

The ridges 10 and 10a are formed such that their outer peripheral surfaces are continuously formed integrally with the outer peripheral tapered surfaces 9 and 9a of the yarn guide portions 4 and 4a, and their inner peripheral surfaces are vertical surfaces, and their top ends are rounded. It is chamfered.

Numerals 13 and 13a are counterbores provided at the centers of the outer end surfaces of the yarn path guide portions 4 and 4a. Throughholes 14 and 14a are provided at the central portions of the counterbore 13 and 13a, and the throughholes 14 and 14a are provided. 14a and the through hole 7 of the yarn path base portion 3 communicate with each other to form an insertion hole 15 continuously.

Then, the fitting portions 8 and 8a at both ends of the yarn path base portion 3 are fitted into the fitting recesses 11 and 11a of the yarn path guide portions 4 and 4a, and the yarn path base portion 3 and the yarn path guide portion are 4 or 4a are bonded or fixed, or the bolt 16 is inserted into the insertion hole 15 and the yarn path base portion 3 and the yarn guide portions 4, 4a are tightened and fixed by the nuts 17 and 17a to integrate the yarn path 1. ing.

Next, the operation of the yarn path according to the present invention will be described. The yarn path 1 is formed by inserting the bolt 16 as a support shaft in the textile machine into the insertion hole 15 and tightening the nuts 17 and 17a. When the thread and the thread are passed through the guide groove 2 of the thread path 1 while the thread and the thread are attached in a freely rotatable or fixed state, the thread and the thread do not have fine holes in the valley portion of the guide groove 2 and the surface slides. Sliding contact with a large number of sliding contact surfaces 5 advances without being damaged or cut.

Further, the yarn and the yarn which are loosened during the traveling, or the yarn and the yarn which are traveling while vibrating in a loose state are momentarily driven by the outer peripheral tapered surfaces 9 and 9a of the yarn guideways 4 and 4a. However, the tension and the like then return and the threads and the thread are prevented from being damaged or cut by being hindered by the seam of the thread path base 3 and the thread guides 4 and 4a. It slides down from the top end portions of 10 and 10a to the sliding contact surface 5 of the valley portion through the taper surfaces 6 and 6a of the yarn path base portion 3, and advances while slidingly contacting the sliding contact surface 5.

[0019]

[Effect of device]

 In short, according to the present invention, in a substantially drum-shaped yarn path around which the expanded V-shaped guide groove 2 is provided, the central portion is the alumina ceramics yarn path base portion 3 having no fine holes. When the yarn path 1 is used in a textile machine, the thread guide parts 4 and 4a made of ceramics having a truncated cone shape are integrally fixed to both end faces of the yarn path base part 3. Since is not porous like the conventional yarn path, it is possible to prevent damage or cutting of the yarn or the yarn due to friction or abrasion.

Further, since the yarn path 1 of the present invention is a composite of the expensive yarn path base portion 3 made of alumina ceramics and the inexpensive yarn path guide portions 4 and 4a made of ceramics, it is made of a single material of alumina ceramics. It can be manufactured at a lower cost than that of the conventional one, so that even if the size is increased, the yarn path base portion 3 made of alumina ceramics can be set to the minimum necessary size, and therefore the manufacturing cost can be reduced. Since both are heat resistant materials, they can withstand use at high temperatures.

Further, the fitting portions 8 and 8a formed at both ends of the yarn path base portion 3 are integrated by fitting them into the fitting concave portions 11 and 11a formed at the inner end surfaces of the yarn path guide portions 4 and 4a. Since it is fixed and step portions 12 and 12a are formed between the taper surfaces 6 and 6a of the yarn path base portion 3 and the outer peripheral taper surfaces 9 and 9a of the yarn path guide portions 4 and 4a, the slackened state advances while vibrating. For yarns and yarns, for example, if the seam portion of the yarn path base portion 3 and the yarn path guide portions 4 and 4a is simply integrated in a plane, the gap between the seam portions or the solidification protruding from the gap. It has a drawback that the yarn and the thread that progress to the adhesive in the existing state are caught and the possibility of damage and cutting becomes great.

However, in the yarn path 1 of the present invention, the outer peripheral taper surfaces 9 and 9a of the yarn path guide portions 4 and 4a are contacted for a moment, and thereafter, from the outer peripheral taper surfaces 9 and 9a to the sliding contact surface 5 on the valley side. Since it slides down naturally and progresses, it is possible to prevent damage and breakage of yarns and yarns caused by the seam of the yarn path base part 3 and the yarn path guide parts 4 and 4a. It is a thing.

[Brief description of drawings]

FIG. 1 is a sectional view of a yarn path according to the present invention.

FIG. 2 is a diagram showing a structure of a yarn path base portion.

[Explanation of symbols]

 2 guide groove 3 yarn path base portion 4, 4a yarn path guide portion 6, 6a taper surface 8, 8a fitting portion 9, 9a outer peripheral taper surface 11, 11a fitting concave portion 12, 12a step portion

Claims (2)

[Scope of utility model registration request] 1. In a substantially drum-shaped yarn path around which an expanded V-shaped guide groove is provided, a central portion is made of an alumina ceramics yarn path base portion having no fine holes, and the yarn path base portion is formed. A yarn path that is integrally fixed to both end surfaces of a truncated cone-shaped ceramic yarn path guide portion. 2. The taper surfaces of the yarn path base portion are integrally fixed by fitting the fitting portions formed at both ends of the yarn path base portion into the fitting concave portions formed at the inner end surface of the yarn path guide portion. The yarn path according to claim 1, wherein a step portion is formed between the outer peripheral tapered surfaces of the yarn path guide portion.