JP2568859B2 - Metal traveler for spinning machines - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a traveler used for a spinning machine such as a spinning machine or a twisting machine, and more particularly to a metal traveler for a spinning machine having improved abrasion resistance at a yarn passing portion. .

[Conventional technology and its problems]

In the case of a traveler for a spinning machine, when the yarn is used under an operating condition in which the yarn passes through the yarn passing portion of the traveler at a high speed or under an operating condition in which a yarn containing a special additive is spun, the resistance of the yarn passing portion is particularly high. Abrasion was required.

Conventionally, a traveler having been subjected to a surface hardening treatment such as chrome plating or satin chrome plating on the surface of the yarn passing portion of the traveler has been used.However, by increasing the operating conditions or specializing the yarn to be spun, The thread passage part wears out early,
Due to this abrasion, fluff is generated, and there is a problem that the quality of the yarn is reduced or the yarn breaks.

In addition, there was a problem that stable spinning could not be obtained, the life of the traveler was shortened, and the trouble of replacing the traveler increased.

The present invention has been made in order to solve the above problems, and has significantly improved the abrasion resistance of the yarn passing portion, has excellent yarn quality, and performs spinning with less yarn breakage, thereby extending the life of the traveler. It is an object of the present invention to provide a metal traveler for a spinning machine.

[Means for solving the problem]

The present invention provides a satin finish by applying a satin finish to at least a yarn passing portion of the traveler circle portion which is in contact with the yarn, and has a thickness of 3 to 15 μm on the entire surface of the satin finished traveller.
With surface roughness of 10 points average roughness RZ (reference length 0.8mm)
= 1.5μ ~ 3.5μ, Vickers hardness of surface is HV1500 ~ HV
A ceramic coating layer having excellent wear resistance having 2500 is provided by a chemical vapor deposition method such as PVD, CVD, IVD, etc., and a thickness of 2 μm is formed on the surface of the ceramic coating layer and on the surface excluding the thread passage portion. A metal traveler for a spinning machine having an epoxy resin film containing a solid lubricant such as デ ン 10 μm of molybdenum disulfide and graphite was constructed.

In the above configuration, the ceramic coating layer may be formed of two different types of ceramic layers.

In addition, the thickness of the ceramic coating layer is 3μ ~ 15μ.
However, if it exceeds 15μ, the processing time becomes longer, the cost increases, and the strength of the entire traveler becomes too high, which makes it difficult to attach and detach the traveler to and from the ring, and also causes cracks, There is a problem that yarn fluff is generated, and if it is less than 3 μm, a necessary abrasion resistance cannot be obtained, and a sufficient traveler life cannot be obtained.

Further, the surface roughness was set to a ten-point average roughness RZ = 1.5μ to 3.5μ, but if it was less than 1.5μ, the coefficient of friction with the yarn increased,
There is a problem that the ceramic layer is worn out at an early stage, and if it exceeds 3.5 μm, the yarn is squeezed and damaged, causing a problem of fuzziness.

And, the thickness of the epoxy resin coating is set to 2μ to 10μ, but if it is less than 2μ, it wears out early due to friction between the traveler and the ring, damages the surface of the ring flange, shortens the life of the ring, and exceeds 10μ However, there is a problem that the processing time becomes longer and the cost becomes higher.

〔Example〕

Hereinafter, an embodiment of a metal traveler for a spinning machine according to the present invention will be described with reference to the drawings.

(Example 1) As shown in FIGS. 1 (a) and 1 (b), a traveler circle of a traveler formed as described above is formed into a vertical traveler 1 or a horizontal traveler 2 of a required shape using a hard steel wire. The entire surface of the portion is subjected to satin finish, and then subjected to a deposition process such as PVD, CVD, etc., and the entire surface including the yarn passing portion 3 that comes into contact with the yarn has a thickness of 3 μ to 15 μ and a Vickers hardness of HV 1500 to HV
A ceramic coating layer 4 of 2500 titanium carbonitride, titanium nitride, titanium carbide or the like is formed.

As shown in FIG. 2, the surface roughness of the ceramic coating layer 4 obtained as described above has a ten-point average roughness RZ of 1.96.
μ, center line average roughness RA 0.35μ, maximum roughness RMAX 2.52μ
Met.

Then, the traveler having the ceramic coating layer 4 is subjected to a quenching treatment, and thereafter an epoxy resin film 5 containing a solid lubricant such as molybdenum disulfide, graphite or the like is formed on the surface excluding the thread passage portion 3 to a thickness of 2 to 10 μm. Thus, a metal traveler for a spinning machine was formed.

In the above embodiment, the satin finish is applied to the entire surface of the traveler circle, but may be formed at least in the yarn passing portion that comes into contact with the yarn.

In addition, titanium carbonitride, titanium nitride, and titanium carbide are shown as ceramic coating layers.
A ceramic coating layer of ₂ O ₃ , ZrO ₂ , and SiC can also be used.

FIG. 3 shows the cross-sectional hardness distribution curves of the traveler A of the present invention obtained as described above and the traveler B of the conventional satin chrome plating.

In order to compare the traveler A obtained in the present invention with the conventional traveler B having a satin chrome plating, a spinning test was performed under the following conditions.

Thread: Ester 40d Ring: Vertical sintered ring (STSN 140mmφ) Spindle rotation speed: 7,000rpm Traveler: BSB No.30 (Vertical traveler) As a result of the spinning test, the thread passing portion of the conventional satin chrome plated Traveler B In 2 to 3 hours, the abrasion was impossible and spinning was impossible.
No abrasion occurred even after a lapse of time, and it was confirmed to have excellent abrasion resistance.

(Example 2) As shown in FIGS. 4 (a) and 4 (b), a traveler circle of a traveler formed as described above by molding into a vertical traveler 6 or a horizontal traveler 7 of a required shape using a hard steel wire. A satin finish is applied to at least the yarn passing portion of the portion that contacts the yarn.

Next, by performing chemical vapor deposition at 450 to 900 ° C. (preferably 700 to 900 ° C.) in a gas atmosphere containing TiCl ₄ , H ₂ , CH ₄ , and N ₂ as main components, the yarn passing in contact with the yarn. A titanium carbonitride layer 8 having a thickness of 2 to 20 μm on the entire surface of the traveler including the portion 3
Then, a multilayer ceramic coating layer 10 of a titanium nitride layer 9 having a thickness of 3 μm or less is formed.

The surface hardness of the multilayer ceramic coating layer 10 is Vickers hardness HV1900 to HV2500.

Subsequently, the traveler having the ceramic coating layer 10 is subjected to a quenching treatment, and thereafter the surface excluding the yarn passing portion 3 is coated with an epoxy resin film containing a solid lubricant such as molybdenum disulfide and graphite in the same manner as in Example 1. 5 was formed to constitute a metal traveler for a spinning machine.

The metal traveler for a spinning machine shown in Example 2 has a surface hardness of HV1900 to HV2500, which is much higher than that of a conventional traveler.

Since the outermost titanium nitride layer 9 has a slightly lower hardness than the titanium carbonitride layer 8 and a low coefficient of friction, it is smooth.
Good compatibility with the ring.

In addition, since the ceramic coating layer and the base material are bonded by diffusion, it is possible to obtain a material having better adhesion than plating and physical vapor deposition.

Further, since the ceramic coating layer is treated at the above temperature, coarsening of crystal grains of the base material and decarburization are prevented.

By the way, the ceramic coating layer shown in the above-mentioned Example 2 is made of Al ₂ O ₃ , ZrO ₂ , SiO ₂ , TiO ₂ in oxide form.
_{2, In 2 O 3, ZnO} , Cr 2 O 3, SiO, TiO, MgO, BeO, ThO 2 , etc.,
As carbide, SiC, TaC, ZrC, WC , HfC, B 4 C, NbC,
Si ₃ N ₄ , TiN, nitrides such as C (diamond)
TaN, ZrN, AlN, GaN, BN, InN, etc.
It can be appropriately selected from iB ₂ , ZrB ₂ , HfB _{2 and the} like.

〔The invention's effect〕

In the present invention, at least the yarn passing portion of the traveler circle portion is subjected to a satin finish and a ceramic coating layer is formed on the entire surface of the traveler, so that the yarn passing portion has a surface roughness RZ.
Has a hard irregular surface with 1.5μ to 3.5μ and Vickers hardness of HV1500 to HV2500, and the contact with the yarn becomes point contact with the hard point with smooth surface, excellent heat dissipation effect, and furthermore friction with the yarn This is an invention that has a remarkable reduction in abrasion of the yarn passing portion due to a decrease in the coefficient as compared with the conventional traveler, and has excellent effects such as a high abrasion resistance and a long life.

[Brief description of the drawings]

FIG. 1 is a metal traveler for a spinning machine showing one embodiment of the present invention. (A) is a cross-sectional view of a vertical traveler, (b) is a partially broken front view of a horizontal traveler, and FIG. 2 is a traveler of FIG. FIG. 3 is a cross-sectional hardness distribution curve diagram of the traveler of the present invention and the conventional traveler, and FIG. 4 is a metal traveler for a spinning machine showing a different embodiment of the present invention. 1 is a sectional view of a vertical traveler, and FIG. 2B is a sectional view of a horizontal traveler. 1, 6 Vertical traveler 2, 7 Horizontal traveler 3 Thread passage section 4, 10 Ceramic coating layer 5 Epoxy resin coating 8 Titanium carbonitride layer 9 Titanium nitride layer

Claims (2)

(57) [Claims] 1. A satin finish is applied to at least a yarn passing portion of a traveler circle portion which is in contact with a yarn to form a satin finish, and a thickness of 3 to 15 μm is applied to the entire surface of the satin finish treated traveler.
A ceramic coating layer having a surface roughness of 10 point average roughness RZ = 1.5 to 3.5μ and a Vickers hardness of HV1500 to HV2500, and furthermore, the surface of the ceramic coating layer and contact with the yarn. On the surface excluding the thread passage section,
A metal traveler for a spinning machine, wherein an epoxy resin film containing a solid lubricant having a thickness of 2 to 10 [mu] is formed. 2. The metal traveler for a spinning machine according to claim 1, wherein the ceramic coating layer is formed of two different types of ceramic layers.