Textiles: spinning – twisting – and twining – Apparatus and processes – Elements
Reexamination Certificate
2001-10-12
2003-05-27
Calvert, John J. (Department: 3765)
Textiles: spinning, twisting, and twining
Apparatus and processes
Elements
Reexamination Certificate
active
06568164
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
The invention relates to a spinning ring for use in ring spinning machines and ring twisting machines, and a method of manufacturing the same.
2. Description of the Prior Art
Conventionally, a spinning ring used in ring spinning machines has been known, in which a cylindrical-shaped blank stock is subjected to cutting work to form a ring flange portion and a mount portion integrally, as well as one which is described in, for example, Japanese Patent Publication No. 16208/1965, and formed as a whole from a sheet steel with a view to automation of manufacturing process, enhanced accuracy, cost reduction, lightening or the like, and one which is described in, for example, Japanese Patent Publication No. 47768/1994, and in which a ring flange portion slidingly contacting with a ring traveller is formed from ceramics and fittingly secured to a neck portion of a ring body for enhanced wear resistance.
FIG. 20
shows a spinning ring
1300
described in the above Japanese Patent Publication No. 16208/1965. In this example, an integrated spinning ring
1300
consisting of a ring flange portion
1301
and a mount portion
1302
is formed by punching a disk from a band steel with the use of a punching type press device, and pressing the disk with the use of a press and a rotating spindle. The spinning ring
1300
is fitted into a ring holder and mounted to a ring spinning machine.
Also,
FIG. 21
shows a spinning ring
1400
described in the above Japanese Patent Publication No. 47768/1994. In this example, a ring flange portion
1401
being slidingly contacted with a ring traveller is formed from ceramics to be provided at an underside thereof with a recess or a stepped portion, and fitted into a ring neck portion
1403
of a ring body
1402
, which is formed from carbon steel, light alloy or plastic, to be bonded and fixed by means of an adhesive.
The above-mentioned conventional spinning ring formed from a cylindrical-shaped blank stock by means of cutting work is difficult to obtain accuracy on a ring flange portion adapted to slidingly contact with a ring traveller, and the ring flange portion is not easy to be enhanced in wear resistance while material cost is suppressed. In contrast, in the case of forming a spinning ring from a sheet steel as described in the above Japanese Patent Publication No. 16208/1965 and securing to a ring body a ring flange portion, which is formed from a separate material, as described in the above Japanese Patent Publication No. 47768/1994, it is relatively easy to obtain accuracy on a ring flange portion and to enhance the wear resistance in the ring flange portion.
Since an integrally formed spinning ring as described in the above Japanese Patent Publication No. 16208/1965, however, is complex in manufacturing process itself for automation to lead to high manufacture cost, and formed by bending of a sheet steel such that a ring flange portion for engagement with a ring traveller has a free end at an end of an underside thereof, there is caused a problem that when the ring traveller runs sliding on the ring flange portion, the ring flange portion causes fine vibrations to lead to abnormal vibrations in both the ring traveller and the ring flange portion, resulting in shortening of service life and frequent occurrence of yarn breakage to lower productivity.
Also, in the case of the spinning ring described in the above Japanese Patent Publication No. 47768/1994, in which the ring flange portion adapted to slidingly contact with a ring traveller is formed as a whole from a separate material and fittingly secured to a neck portion on a ring body side, a fitting portion where the ring flange portion and the neck portion fit together is small in contact area, and so there is caused a problem that load or shock applied at the time of mounting and dismounting of a ring traveller and vibrations or shock at the time of running of the ring traveller will release fitting of the ring flange portion and the neck portion to permit the ring flange portion to rotate on the neck portion upon running of a ring traveller and to cause the ring flange portion to separate from the neck portion, resulting in incapability of spinning.
OBJECT AND SUMMARY OF THE INVENTION
The invention has been thought of for the purposes of solving the above-mentioned problem, and has its object to provide a spinning ring, in which a ring flange portion can be enhanced in accuracy and wear resistance, and there is not involved a problem that fine vibrations possibly generated on the ring flange portion at the time of running of a ring traveller cause a ring traveller and the ring flange portion to undergo abnormal wear to be shortened in service life and yarn breakage is frequently generated to decrease productivity, and which is free of rotation of the ring flange portion upon the running of a ring traveller resulted from falling-off of the ring flange portion, which results from load and shock applied at the time of attaching and detaching of the ring traveller and of incapability of spinning caused by falling-off of the ring flange portion, and a method of manufacturing the same.
Based on the knowledge that in a spinning ring comprising a ring flange portion making a track for running of a ring traveller in a sliding contact condition and a mount portion mounted on a ring rail or a ring holder, formation of the spinning ring through fitting and securing of a plurality of members is advantageous in enhancing the ring flange portion in accuracy and wear resistance and that with respect to formation of the spinning ring through fitting and securing of a plurality of members, since dimensional and configurational accuracies are specifically demanded for a running surface of the traveller on an inner peripheral side of the ring flange portion, strength in fitting and securing is easy to ensure when a portion on the inner peripheral side for forming the running surface of the traveller is a separate member or when the portion on the inner peripheral side for forming the running surface of the traveller is a separate member and a portion on an outer peripheral side for forming the running surface of the traveller is formed from a member integral with the mount portion rather than when the entire ring flange portion, the invention provides a spinning ring, in which the ring flange portion is divided into two inner and outer sections, and consists of an inner flange and an outer flange, and the inner flange is fitted onto and secured to an inner peripheral side of the outer flange to be made integral therewith, and a method of manufacturing the same.
Thus the spinning ring according to the invention is one provided with a ring flange portion, which permits a ring traveller to run thereon in a sliding contact condition, the ring flange portion composed of an inner flange and an outer flange, the inner flange being formed with a running surface of the traveller, which is formed by folding back an inner peripheral portion of a doughnut-shaped disk blank toward an outer peripheral side of the blank to be disposed on an folded-back, inner peripheral side of the blank and adapted to slidingly contact with a foot portion of a ring traveller, and with a fitting portion, which is disposed on the outer peripheral side of the blank to fit onto the outer flange, the outer flange being formed integral with a mount portion, which is mounted to a ring rail or a ring holder through a neck portion, and being provided on an inner peripheral side thereof with a fitting portion, which is adapted to be fitted onto the inner flange, and on an outer peripheral side thereof with an engaging portion, which is adapted to engage with the foot portion of the ring traveller, the inner flange and the outer flange fitting together and being integrated together by a securing means.
A doughnut-shaped disk blank making the inner flange is preferably formed by punching a band-shaped or coiled sheet material such as sheet steel, alloy steel sheet or the like, and the outer flange is fo
Hamaguchi Masamichi
Kobayashi Naohumi
Kusakari Ryohei
Nariyama Yoshihumi
Browdy and Neimark , P.L.L.C.
Calvert John J.
Hurley Shaun R
Kanai Juyo Kogyo Co. Ltd.
LandOfFree
Spinning ring for a ring spinning machine and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spinning ring for a ring spinning machine and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spinning ring for a ring spinning machine and method of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3002702