Textiles: manufacturing – Warp preparing or handling – Reeling or beaming
Reexamination Certificate
2001-04-27
2002-08-06
Worrell, Danny (Department: 3765)
Textiles: manufacturing
Warp preparing or handling
Reeling or beaming
Reexamination Certificate
active
06427299
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a sample warper and a warping method where feed of a conveyor belt is changed according to a count (yarn thickness) of a yarn to be warped so that there can be canceled surface undulation of finished winding of the yarn which has been wound on a warper drum to achieve flat finishing.
2. Description of the Related Art
As a conventional sample warper (W), there has been known a structure shown in
FIGS. 8-10
, disclosed in Japanese Patent No. 1529104, etc. The sample warper (W) of
FIG. 8
comprises: a warper drum (A); a single yarn introduction means
6
, rotatably mounted on one side surface of the warper drum (A) for winding a yarn on the warper drum (A); a plurality of yarn selection guides
27
associated with the yarn introduction means
6
and mounted on an end of a base (Y) supporting the warper drum (A) for moving angularly movable to project to a yarn exchanging position and retract to a standby position during yarn changing; a fixed creel (B) for supporting a plurality of bobbins (N) which are associated with the plural yarn selection guides
27
and on which the same kind or different kinds of yarns
22
are to be wound, thereby passing the yarns
22
between the yarn introduction means
6
and the yarn selection guides
27
so that the yarns are automatically changed and successively wound neatly on the warper drum (A) according to preset pattern data (yarn order).
In the sample warper (W), the plural yarn selection guides
27
receive the plural yarns
22
, respectively, so that the individual yarns
22
of the fixed creel (B) can be successively wound on the warper drum (W) in a fully controlled manner. Reference numeral
17
designates a plurality of conveyer belts movably mounted on a circumferential surface of the warper drum (A). A feed rate of the conveyor belt
17
is controlled by a conveyor belt feed means, that is, a conveyor belt feed motor later described. A plurality of parallel shedding members (a plurality of parallel shedding bars
38
a
to
38
g
) are longitudinally extending alongside of the warper drum (A).
This known sample warper (W) has a hollow shaft
1
(FIG.
9
). Driving and driven shafts
2
,
3
project centrally from opposite ends of the hollow shaft
1
. A small gear
5
fixed to a pulley
4
and a pulley
99
are loosely mounted on the driving shaft
2
, while a small gear
7
, to which a yarn introduction means
6
is fixed, is loosely mounted on the driven shaft
3
at the distal end. While the illustrated example shows only one yarn introduction means
6
, two or more yarn introduction means
6
must be disposed for a plural-winding system.
The small gears
5
,
7
are associated with each other through small gears
9
,
10
disposed at opposite ends of an associating shaft
8
extending through the hollow shaft
1
, which small gears
9
,
10
are meshed with the corresponding small gears
5
,
7
. The hollow shaft
1
is cantilevered at the driving shaft
2
, and a warper drum (A) is loosely mounted on the hollow shaft
1
on the driven shaft
3
side.
The warper drum (A) is formed of drum frames
13
,
14
having an outer periphery of like shape having alternately an arcuate portion and a straight portion; a pair of rollers
15
disposed one on the arcuate portion of each of the drum frames
13
,
14
; and horizontal beams
16
carrying the rollers
15
around which conveyor belts
17
are wound. The conveyor belts
17
are moved along a plane formed by the horizontal beams
16
.
The conveyer belts
17
are simultaneously driven to a common amount of fine movement by a drive member
21
threadedly engaged with interior screw shafts
20
of planetary gears
19
concurrently rotated by meshing with a sun gear
18
suitably driven from the exterior. A feed rate of the conveyor belt
17
may be controlled by a control unit controlling a conveyor belt moving motor
51
later described, that is, a conveyor belt feed means. The distal end of the yarn introduction means
6
is bent inwardly to provide a yarn introducing member
6
′ which is disposed adjacent to the front end of the outer periphery of the warper drum (A).
Referring to
FIG. 9
, (B) designates a fixed creel for supporting a plurality of bobbins around which different kinds (different colors or different twists) of yarns
22
are wound;
24
, a guide plate for guiding yarns
22
drawn out from the bobbins;
25
, a tension regulator for regulating the tension of the yarns
22
;
26
, a dropper ring;
30
, a guide rod for the yarns
22
; and (E), a yarn fastener having a permanent magnet mounted to a base (Y) for pressing and setting the yarns.
Referring again to
FIG. 9
reference numeral
46
designates a main motor implemented by an invertor motor for enabling, during operation of the warper, acceleration and deceleration, buffer start/stop, jogging operation and an increased winding speed.
Further in
FIG. 9
, reference numeral
47
designates a main speed change pulley;
58
, a V belt wound on and between the main speed change pulley
47
and an auxiliary speed change pulley
48
;
49
, a counter pulley which is coaxial with the auxiliary speed change pulley
48
; and
50
, a brake actuating pinion for reciprocatingly moving a rack to bring the rack into and out of engagement with a brake hole (not shown) in a brake drum (D), thus controlling the warper drum (A) as desired. Reference numeral
57
designates a belt between pulleys
4
on the driving shaft
2
;
51
, a conveyor belt moving motor (AC servo motor);
52
, a shift lever;
54
a sprocket-wheel;
55
, a chain;
56
, a chain wheel for driving the sun gear
18
;
57
,
58
, both V belts;
59
, a front cover;
59
a,
a front guide rod; and (D), the brake drum. Reference numerals
67
a,
67
b
designate sensors for detecting the passing of the slit of the slitted plate
28
.
Referring next to
FIG. 10
, reference numeral
69
designates a movement/stopping change-over lever for the conveyor belts
17
;
70
, a locking lever for locking the warper drum (A);
74
, a shedding bar adjusting lever;
75
, a shedding bar locking handle;
78
, a program setting unit;
79
, a controller;
80
, a yarn tensioning unit located centrally on the straight part
12
of the warper drum (A); and (C), a rewinder.
The controller
79
is a control unit for controlling the sample warper and may control various apparatus connected thereto in accordance with a program set by a program setting unit
78
. The basic structure and operation of the sample warper (W) are well known as by the above-mentioned Japanese Patent, etc., so their detailed description is omitted here. As the conveyor belt
17
, needless to say, there may be applied an endless conveyor belt mechanism as disclosed in Japanese Patent Laid-open Publication No. 11-315439.
As disclosed in the above Japanese Patent, feed of the conveyor belt in the sample warper of this kind is controlled by a conveyor belt feed control unit on the basis of the feed rate of the conveyor belt, namely, a feed pitch P
1
, per revolution of the yarn introduction means calculated according to data input of warping width, the number of warping yarns, and warping length (the number of warping windings).
In the above-mentioned sample warper, however, the feed rate of the conveyor belt, or the feed pitch (P), per revolution of the yarn introduction means is calculated according to the following equation (1) on the basis of the warping width, the total number of yarns to be warped and the warping length (the number of warping windings), so that it becomes the same pitch irrespective of a count (yarn thickness).
Warping width=P(feed pitch)×the number of warping windings×the total number of yarns to be warped: Q(warping density)=P(feed pitch)×the number of warping windings: Warping density (Q)=warping width÷the total number of yarns to be warped: (P)=warping density (Q)÷the number of warping windings
. . . (1)
For this reason, as shown in
FIG. 6
, when
Aihara Takatsugu
Tanaka Yoshihiro
Suzuki Warper Ltd.
Worrell Danny
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