JPH05125625A - Ring for spinning machine - Google Patents

Abstract

PURPOSE:To obtain a spinning ring coated with a composite film and excellent in lubrication properties and abrasion resistance by forming a hard-metal deposit layer having micro-depressions on the ring flange surface, coating the surface with a high-lubrication (containing lubricating substance) synthetic resin film and filling the micro-depressions with the above-mentioned resin. CONSTITUTION:A hard-metal deposit layer 3 of chromium, etc., having micro- depressions 4 is formed on the ring flange surface 2 where, at least, a traveler is allowed to slide. On the surface of the resultant deposit layer 3, a high- lubrication synthetic resin coating film or a lubricating substance-containing synthetic resin coating film 6 (preferably molybdenum disulfide particle 5- containing epoxy resin coating film) is formed and the micro-depressions 4 on the above-mentioned hard-metal deposit surface are filled with the above- mentioned synthetic resin, thus obtaining the objective spinning ring coated with a composite film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning machine ring used in a spinning machine, a twisting machine or the like.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
The case-hardening steel rings that are commonly used in spinning and twisting machines lack the wear resistance to travelers under the harsh operating conditions of today's spinning mills. A method of nitriding the surface of the ring or forming a diffusion layer of intermetallic carbide is also adopted, but the cured layer has low chewing property and is easily peeled off, and the traveler is unsuitable for seizing and stabilizing the seizure early. It had the drawback of not being able to operate.

Therefore, as a means for improving wear resistance to travelers for the purpose of eliminating these causes, it has been considered that the ring is plated with chromium, but chromium plating is extremely high, but Has a drawback that the spinning tension becomes extremely high in the early stage of spinning and that many yarn breakages occur, and there are cracks on the plating surface, which causes peeling wear and abnormal ring. It had the drawback of causing wear.

[0004]

The present invention has been made to solve the above-mentioned problems, and at least a ring flange surface on which a traveler slides is provided with a hard metal plating layer having fine recesses on the surface. By forming a lubricating synthetic resin film or a synthetic resin film containing a lubricating substance on the surface, a composite film is formed by filling the minute recesses on the hard metal plating surface with the lubricating synthetic resin. By doing so, it is possible to provide an optimal spinning ring for spinning and twisting in high speed and high production.

[0005]

The spinning ring of the present invention forms a chromium plating layer having a very high hardness on the surface of the ring and a composite film of a self-lubricating molygden disulfide-containing epoxy resin or a PTFE resin having excellent lubricity. By doing so, the initial familiarity with the traveler becomes good, and since it has lubricity and wear resistance, it is possible to maintain a stable spinning state for a long time even under high spinning speed spinning conditions.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, after cutting a low carbon steel containing C: 0.15% into a predetermined ring 1 shape, carburizing and tempering is performed on at least the flange surface 2 of the ring. Then, a hard chrome plating layer 3 having a thickness of 50 μ is applied, and minute recesses 4 are provided on the chrome-plated surface by an electrochemical, chemical, or mechanical method as shown in FIG.

Further, an epoxy resin coating 6 containing 65% of molybdenum disulfide 5 is formed on the surface of the hard chromium plating layer having the minute recesses 4 so as to have a thickness of 5 μ,
A ring for a spinning machine was obtained in which a microscopic recess on the plating surface was filled with an epoxy resin containing molybdenum disulfide to form a composite coating.

The hard chrome plating layer to be formed preferably has a thickness in the range of 10 to 100 μm.
If it is less than μ, sufficient abrasion resistance cannot be obtained, and if it exceeds 100 μ, peeling of the plating layer is likely to occur due to impact.

The thickness of the synthetic resin coating such as epoxy or PTFE is preferably 1 to 20 μm, and if it is less than 1 μm, a sufficient lubrication effect cannot be obtained, and if it exceeds 20 μm, peeling is rather likely, which is not preferable.

Further, the content of molybdenum disulfide, which is a lubricating substance added to the synthetic resin, is preferably 40 to 85%.
If it is less than 0%, the lubricating effect is lowered, and if it exceeds 85%, the strength of the synthetic resin coating itself is lowered. In addition to molybdenum disulfide, a lubricating powder such as carbon or graphite can be used.

[0011]

As described above, according to the present invention, since the lubricant layer is formed on the frictional sliding portion between the ring and the traveler with the above structure, the initial familiarity of the ring with the traveler is greatly improved and the life of the ring is improved. Extend. Further, since a hard chrome plating layer is formed on the base, the life is further extended, and long-term use becomes possible. Further, since the above-mentioned hard metal plating surface is provided with minute recesses and is filled with a synthetic resin containing a lubricating substance, the lubricating effect is maintained for a long period of time even after the lubricating synthetic resin film is lost by friction with the traveler. It Therefore, it is an invention having excellent effects such as less yarn breakage than the initial stage, a low average yarn breakage level in the long term, and the possibility of being used under high rotation and high speed spinning conditions.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a ring for a spinning machine showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is an enlarged cross-sectional view of an essential part of a composite coating formed on the surface of the spinning ring of the present invention.

[Explanation of symbols]

 1 Ring for spinning machine 2 Flange surface 3 Hard chrome plating layer 4 Minute recesses 5 Molybdenum disulfide particles 6 Epoxy resin coating

Claims (4)

[Claims] 1. A plating layer of a hard metal having minute recesses is formed on at least a ring flange surface on which a traveler slides, and a lubricating synthetic resin film or a synthetic resin containing a lubricating substance is formed on the surface of the plating layer. A ring for a spinning machine, which is characterized in that a coating is provided and a minute coating on the surface of the hard metal plating is formed with a composite coating filled with the synthetic resin. 2. The ring for a spinning machine according to claim 1, wherein the plating metal is chromium. 3. The ring for a spinning machine according to claim 1, wherein the synthetic resin film is an epoxy resin containing molybdenum disulfide. 4. The ring for a spinning machine according to claim 1, wherein the synthetic resin coating is a PTFE resin.