Textiles: manufacturing – Warp preparing or handling – Reeling or beaming
Reexamination Certificate
2000-10-17
2004-01-06
Vanatta, A. (Department: 3765)
Textiles: manufacturing
Warp preparing or handling
Reeling or beaming
Reexamination Certificate
active
06671937
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to generally to an electronically controlled sample warper having a plurality of yarn introduction means for winding yarns on a warper drum to automatically exchange yarns and wind the yarns on a warper drum in accordance with a preset pattern data (yarn order), and more particularly to an electronically controlled sample warper which enables a combined use of a fixed creel and a rotary creel, a warping method, and a rotary creel suitable for use in the warper.
2. Description of the Related Art
As a conventionally used electronically controlled sample warper, there is known a structure disclosed, for example, in Japanese Patent Publication No. 64-8736, as illustrated in
FIGS. 34-38
. This known electronically controlled sample warper W
20
has a hollow shaft
1
(FIG.
34
). 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 warn 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, later described.
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.
As illustrated in
FIG. 35
, the warper drum A is formed of drum frames
13
,
14
having an outer periphery of like shape having alternately an arcuate portion
11
and a straight portion
12
; a pair of rollers
15
disposed one on the arcuate portion
11
of each of the drum frames
13
,
14
; and horizontal beams
16
carrying the rollers around which conveyor belts
17
(
FIG. 34
) 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. 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 again to
FIG. 34
, B designates a fixed creel for supporting a plurality of bobbins around which different kinds (different color or different twisting) 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.
Further in
FIG. 34
, reference numeral
27
designates a yarn selection guide unit having a plurality of yarn selection guides
27
a
-
27
j
(
FIG. 38
) for selecting and guiding the yarns
22
according to instructions from a program setting unit
78
(FIG.
37
).
28
designates a slitted plate which generates pulses in response to the rotation of the pulley
4
to actuate a plurality of rotary solenoids
29
arranged corresponding to the yarn selection guides
27
a
-
27
j
. The yarn selection guides
27
a
-
27
j
are mounted to their respective associated rotary solenoids
29
such that they are pivotally moved to advance to an operative position (yarn exchange position) when the rotary solenoids
29
are turned on, and they are pivotally moved in the opposite direction to restore to a standby position (yarn accommodating position) when the rotary solenoids
29
are turned off.
Referring next to
FIG. 36
, reference numerals
33
,
34
and
38
designate shedding bars for jointly forming a shed of the yarns
22
, where the bars
33
,
38
are upper shedding bars, and the remaining bar
34
is a lower shedding bar.
35
and
37
designate cut shedding bars for separating the shedding down yarns into lower-side yarns and upper-side yarns, where one of the bars
35
is a cut shedding up bar, and the other bar
37
is cut shedding down bar. It should be noted that in
FIG. 37
, the illustration of the upper shedding bar
38
is omitted.
Reference numeral
39
designates a yarn stopper mounted on the dram frame
13
for stopping a yarn immediately under the broken yarn being shedded (FIG.
35
). A rewinder C is composed of a skeleton
40
, a pair of rollers
41
,
42
, a zigzag-shaped comb
43
, a roller
44
and a beam
45
for a woven fabric (FIGS.
35
and
36
).
Referring next to
FIG. 34
, reference numeral
46
designates a main motor which may be 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. 34
, 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 rotational speed of the warper drum A as desired.
57
designates a V belt between the pulleys
4
on the driving shaft
2
;
51
, a 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 yarn introduction cover; 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
.
The slitted plate
28
is set to rotate synchronously with the yarn introduction means
6
, so that the rotation of the yarn introduction means
6
is also sensed by the sensors
67
a
,
67
b
by detecting the rotation of the slit of the slitted plate
28
. These sensors
67
a
,
67
b
actually comprise three sensors which are arranged at an angular space of about 120 (only two of them are illustrated in the figure).
Referring next to
FIG. 37
, reference numeral
69
designates a movement/stopping change-over lever for the conveyor belt
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 S, a stopper plate disposed on the base Y corresponding to the yarn selection guide unit
27
.
The foregoing electronically controlled sample warper, which has been developed by the present applicant, is favorably accepted as being capable of automatic pattern warping through electronic control.
However, since the conventional electronically controlled sample warper as described above employs an ordinary general-purpose motor as a main motor, there are still several problems to solve. First, it is impossible to increase and/or decrease the rotating speed during operation. Miscatching and mischanging inevitably occur during exchange of yarns. Yarns are susceptible to breakage. In addition, the conventional electronically controlled sample warper is not capable of performing buffer start/stop, jogging operation and so on, so that there have been room for improvement in terms of operation efficiency.
In addition, with respect to a warp density setting method and a mechanism employed thereby, a moving speed of conveyor b
Arent Fox Kintner Plotkin & Kahn
Suzuki Warper Ltd.
Vanatta A.
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