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Патент USA US3084889

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April 9, 1963
w. J. CALDWELL
3,084,879
APPARATUS FOR TAPING COILS
Filed Oct. 24, 1958
19 Sheets-Sheet 2
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WASHINGTON J. CALDWELL“
BY
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ATTORNEYS
April 9, 1963‘
w. J. CALDWELL
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APPARATUS FOR TAPING COILS
Filed Oct. 24, 1958
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April 9, 1963
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April 9, 1963
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APPARATUS FOR TAPING COILS
Filed 001.. 24, 1958
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April 9, 1963
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April 9, 1963
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WASHINGTON J. CALDWELL
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Filed Octv 24, 1958
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April 9, 1963
w. J. CALDWELL
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APPARATUS FOR TAPING COILS
Filed Oct. 24, 1958
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April 9, 1963
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April 9, 1963
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Filed Oct. 24, 1958
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April 9, 1963
w. J. CALDWELL
3,084,879
APPARATUS FOR TAPING COILS
Filed Oct. 24, 1958
19 Sheets-Sheet 19
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INVENTOR.
WASHINGTON J. CALDWELL
BY
ATTORNEYS
3,084,879
United States Patent 0 rice
Patented Apr. 9, 1963
1
3,884,879
APPARATUS FOR TAPING- COILS
Washington .I. Caldwell, Toledo, Ohio, assignor to The
Electric Auto-Lite Company, Toledo, Ohio, a corpo
ration of Ohio
Filed Oct. 24, 1958, Ser. No. 769,386
14 Claims. (Cl. 242-6)
It is a further object of this invention to provide a meth
ed and a machine for taping electric coils of toroidal, non
circular shape, wherein the tape is applied in an even
layer with uniform overlap, and wherein the tape is ap
plied in close proximity to the terminal leads.
Other objects and advantages of this invention relating
to’ the arrangement, operation and function of the related
elements of the structure, to various details of construc
tion, to combinations of parts and to economies of manu
ticularly to machines for positioning flexible insulating 10 facture will be apparent to those skilled in the art upon
consideration of the following description and appended
tapes on coils of non-circular conformation for the pur
claims, reference being had to the accompanying drawings
pose of insulating these coils for use in electrical devices
forming a part of this speci?cation wherein like refer
such as motors and generators or the like.
ence
characters designate parts in the several views.
The problem of insulating coils for use with electrical
Referring to the drawings:
instrumentalities, particularly when the coils have a non 15
FIGURE 1 is. an elevational view of the machine as a
circular conformation for use with the pole shoes of elec
whole.
tric starting motors in the automotive ?eld, has long been
FIGURE 1A is a perspective view of a coil on which
a problem with manufacturers of equipment of this type.
the machine is adapted to wind tape as an insulation layer.
For many years a cotton tape has been utilized for this
FIGURE 2 is a front elevational view of the machine.
purpose, and even though the operation has been partially
FIGURE 3 is a sideelevational view of the machine
mechanized, manual manipulation of the coil was neces
taken opposite from the view shown in FIGURE 1.
sary by an operator and a very high degree of manual
FIGURE 4 is a plan'view of the machine partly in
skill and dexterity was necessary to place an even layer
section.
.
I
of cotton insulating tape on coils of this type. Often
FIGURE 5 is a rear elevational view of the machine.
training periods of six months or more were necessary 25
FIGURE 6 is an elevational view partly in section of
to give an operator the degree of skill necessary to obtain
the winding element.
‘
\
an acceptable insulating layer on coils with a fair degree
‘FIGURE 7 is an elevational view of a portion of the
of speed, so that the cost was maintained at acceptable
This invention relates to taping machines, more par
levels.
This operation also required a high degree of
concentration, so that the job was tiring to an operator
winlding element showing the beginning of the winding
cyc e.
with the result that the job was unpopular in production
lines and the workers would quit the job as quickly as
possible to acquire a new job on production lines where
the degree of skill and the need for concentrated effort
- FIGURE 8 is a view similar to FIGURE 7 illustrating
this undesirable situation by using a liquid type of insula
tion which could be applied by a dipping step and sub
sequently baked and hardened. This solution was partially‘
. FIGURE 14 is a view similar to FIGURE 12.
a more advanced phase of the winding cycle.
FIGURE 9 is an elevational view taken along the line
9—9 of FIGUREG.
FIGURES l0 and 11 are views of a portion of the wind
was not so burdensome. This had the end result that 35
ing mechanism.
v
the labor turnover in taping jobs was large and most of
‘ FIGURE 12 is an elevational view taken along the
the operators were not working at this job sufficiently
line_12—12 ofv FIGURE 13.
long to acquire the necessary skill, so that the results were
,' FIGURE 13 is a plan view of the coil holding mecha
not satisfactory and far too costly.
nism.
An attempt has been made in the industry to obviate
FIGURE 15 is a plan view similar to FIGURE 13.
FIGURE 16 is a plan view partly in section of the coil
holding mechanism.
successful, but still Was too expensive, due to the high
FIGURE 17 is an elevational view partly in section
initial cost of the materials, and also due to the many 45
showing one of the vertical spindles on the coil holding
rejects arising from uneven application of the insulating
materials.
FIGURES 18 and 19 are plan views partly in section of
The present invention contemplates the provision of a
the mechanism driving the coil holding device.
machine which substantially mechanizes the taping step
FIGURE 20 is an elevational view partly in section
using the cotton tape as insulating material. The machine 50
taken along the line 20—~20‘ of FIGURE 19.
of the type disclosed removes the operation of taping
mechanism.
coils from a highly skilled manipulation, so that an opera
tor, after a very short period of training, can apply the
insulating tape to coils with uniform results and at a
.
,
.
FIGURE 21 is an elevational view taken along the line
21—-21 of FIGURE 1‘.
FIGURES 22, 23 and 24 are elevational views of the
speed which substantially lowers the cost of the insulating 55 mechanism cooperating with the tape for the purpose of
gripping its free end.
step. At the same time, the use of the machine obviates
FIGURES 25, 26 and 27 are elevational views of the
the labor problem by making the taping job on the pro
mechanism operating the device shown in FIGURES 22,
duction lines one that requires a much lower degree of
skill and concentration, so that an average operator can
23 and 24 as shown in its varying positions.
perform it successfully with a reasonable amount of effort. 60 FIGURE 28 is an elevational view of a machine ele
The job becomes one of loading and unloading coils to
ment taken along the line 28—28 of FIGURE 25.
and from the machine, with the cotton tape being auto
FIGURE 29 is an elevational view in section of a ma
matically positioned on the coil by the machine. The
chine element taken along the line 29—29 of FIGURE 26.
use of the machine, which places an even layer of cotton
FIGURE 30 is an elevational view partly in section
tape on each coil, uniformly from coil to coil, saves a 65 taken along the line 3(l‘-—30 of FIGURE 25 .
considerable amount of tape to thereby further reduce
FIGURE 31 is an elevational view of a locking element
the cost, not to mention a better and more uniform insula
taken along the line 31—31 of FIGURE 25.
tion for the coils.
FIGURE 32 is a plan view partly in section of the main
It is, therefore, a principal object of this invention to
provide a machine which automatically wraps a ?exible 70 driving mechanism.
FIGURE 33 is an elevational view of the device shown
insulating tape about a toroidal coil which is non-circular
in FIGURE 32.
in conformation.
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