Textiles: fiber preparation – Working – Carding
Reexamination Certificate
1999-03-05
2001-02-20
Worrell, Danny (Department: 3741)
Textiles: fiber preparation
Working
Carding
C019S110000, C019S113000
Reexamination Certificate
active
06189184
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims the priority of German Application No. 198 09 330.6 filed Mar. 5, 1998.
BACKGROUND OF THE INVENTION
This invention relates to a carding machine which has at least one stationary carding segment cooperating with a roll (for example, the main carding cylinder) of the carding machine. The stationary carding segment has a carrier on which two carding elements are mounted which are situated serially as viewed in the direction of roll rotation. The clothing of the carding elements and the clothing of the roll cooperate with one another. The stationary carding segment is adjustable relative to the roll with which it cooperates. In a known arrangement of the above-outlined type, as disclosed in published European Application 0 144 607, a carding plate mounted on a carrier has at least two tooth fields which are arranged fixedly relative to one another. The carding plate may be adjusted as a whole so that the tooth fields do not need any individual adjustment. The tooth points of a tooth field may be arranged along an imaginary cylindrical surface whose radius approximately corresponds to that of the carding cylinder. As a result, the clothing of the stationary carding plate, on the one hand, and the cylinder clothing, on the other hand, are arranged parallel to one another. In case the distance between the facing clothings is increased or reduced, the ratio of the radii of curvature along which the clothings are arranged changes. As a disadvantageous result, the curvatures along which the clothing points are arranged change with respect to one another such that different distances between the facing clothings will appear. It is thus a drawback that the carding clearance changes such that the carding operation and the quality of the carded product are adversely affected. A purposeful adjustment to a desired carding gap cannot be effected by the known device.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved adjustable stationary carding segment of the above-outlined type from which the discussed disadvantages are eliminated and which, in particular, makes possible an accurate setting and an adjustment of the distances of facing clothings in a simple manner.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the carding machine includes a machine frame; a fiber processing roll carrying a roll clothing and having a rotary axis; and a stationary carding segment including a carrier mounted on the machine frame; and two carding elements affixed to the carrier and arranged serially as viewed circumferentially of the roll. Each carding element has an element clothing for cooperating with the roll clothing. The carding segment further has a mechanism for turning the carding elements as a unit about a turning axis extending parallel to the rotary axis of the roll for adjusting a distance of the element clothings from the roll clothing.
By providing for a rotatability of both carding elements jointly about an axis of rotation, desired distances between the facing carding clothings may be set in a simple manner. Since the two carding elements are rigidly interconnected, an exact adjustment of the two clothings of the carding elements relative to the cylinder clothing is possible. Particularly in case of planar clothing surfaces of the two carding elements, it is feasible to arrange both carding surfaces at the same distance from, and approximately tangentially to, the clothing surface of the cylinder; as a result, the carding gap has a substantially uniform width. This is particularly the case when the clothings of the carding elements are short. The device according to the invention also makes a setting of a desired flaring or tapering course of the carding gap feasible in a simple manner. The distances between the facing carding clothings may be set in a simple and purposeful manner according to the invention.
While it is known from published European Application 152 053 to adjust a distance between the clothings of the carding elements, on the one hand, and the cylinder clothing, on the other hand, the individual adjustment of each carding element, however, is structurally complex and the carding clearance lacks uniformity.
The invention has the following additional advantageous features:
The carding elements are mounted inside the carrier and are rotatable together.
The carding elements are rotatable together with the carrier.
The carding elements are rotatable relative to a securing surface.
The carrier is rotatably mounted.
The rotary axis passes through a midpoint between the carding elements.
The rotary axis is situated in the end region of one of the carding elements.
An adjusting device is provided at one end of the carrier.
The adjusting device has at least one setscrew.
The carrier is associated with a rotary joint.
The rotary joint has, at the carrier, a movable bent surface which is in engagement with a stationary bent surface.
The rotary joint is aligned with the longitudinal central axis of the carrier.
At least one setscrew passes through an opening in the carrier.
The setscrew engages a stationary counter support.
The contacting end of the setscrew is spherical.
The setscrew has a counternut.
The carrier is, at both ends, mounted on a stationary counter support by means of a securing element, for example, securing screws.
One of the securing screws sets the distance between the carrier and the counter support.
The carrier and/or the carding elements may be immobilized.
At least one stationary carding element structured according to the invention is arranged in the pre-carding zone between the licker-in and the rearward sprocket supporting the traveling flats.
At least one stationary carding segment structured according to the invention is disposed in the post-carding zone between the doffer and the frontal sprocket which supports the traveling flats.
At least one stationary carding segment structured according to the invention is disposed in the lower carding region between the doffer and the licker-in.
In case only stationary flats elements are associated with the carding cylinder, a plurality of stationary carding segments structured according to the invention are disposed along the carding cylinder.
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Leder Armin
Pferdmenges Gerd
Kelemen Gabor J.
Trutzschler GmbH & Co. KG
Venable
Welch Gary L.
Worrell Danny
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