close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2100847

код для вставки
Nov. 30, 1937.
M_ E. HALsTl-:AD
DIE STRUCTURE
Filed sept. 24, 195e
n\
2,100,847
Patented` Nov. 30, 1.937
2,100,847
UNITED STATES PATENT OFFICE
2,100,847pk
DIE STRUCTURE
Merle E. Halstead, Owego, N1 Y.
Application September 24, 1936,»Serial No. 102,384/
12 Claims. .(Cl. 164-29)
This invention relates to cutting and punching ting' apparatus at the- correct height above the
dies. Although applicable to various dies in dif
die holder of the machine, possesses the neces
ferent industries, the invention is primarily in
sary strength„an'd' will not warp or deteriorate in
tended for use in the shoe industry, where a spe
use, but which by virtuel of novel features of its
5 cial diiîiculty in die equipment is encountered.
construtcion is much lighter than corresponding 5
Common decorations> on shoes include pinked die structures of the prior art. The inertia of
edges, and rows of holesY punched in the top layer ' my improved die structure is, therefore, less, and
of leather along seams by which adjacent uppers the manual labor of sliding the die back and
are joined. If the rearward edge'or throat of the forth >between loading and cutting positions for
10 vamp is to be pinked or decorated Vwith a row each shoevl upper decorated is so much reduced '
of holes> on a particular style of shoe having that operators of less physical endurance can be
graded uppers, it is necessary for the- manu
facturer to have a diiferent die for every size
15
of shoe.
For another style of shoe a new setk of dies
is necessary, and since dies are expensive the
employed tov run the machines in which the die is
used;
Another object of the invention is to provide
improved means for holding the stripper plate 15
on the base of the die. Other objects, features
capital investment required for decorating shoes
and advantages of the invention will appear or
becomes excessive, particularly in the case of
women’s shoes where variety is demanded and
it is customary to make only a limited quantity
of the same style.
It is an object ofv this invention to provide a>
die structure in which inexpensive, interchange
able parts make it possible to change the’ contour
be pointed «out as the speciñcation proceeds.
In the accompanying drawing, forming part
of the cutting apparatus to correspond to the
th'e lines 2--2 and 3-3, respectively, of Fig. l; 25
shape of any size or style of shoe upper. 'I‘he
expression “cutting apparatus” is used herein as
a generic term to describe a knife blade, such as
used for pinking, or a series of punches for mak
ing decorative holes, or a combination of a blade
and punches.
According to one feature of the invention, the
cutting apparatus; insteadr of being set in a per
manently fixed organization in the die structure
3S is retained by holders which are detachably held
hereof:
20
Fig. l is atop plan View, with one-half of the
stripper plate`> broken away, showing a die em
bodying the invention;
Figs; 2 and 3 are sectional views taken along
and
Fig. 4 is an enlarged detail View of a portion
of the' cutter- chain.
The die illustrated comprises a base II on
which cutter holding slides or plates I3 and I4
are held. These cutter holders I3 and I 4 have
confronting edges with a contour similar to that
of the‘piece to'be decorated, and they are spaced »
to form a channel I5" in which ñexible cutting
apparatus is placed and held to the desired 35
on a base and which can be maintained in a
contour.
different relation for use with other styles or sizes
The cutting apparatus shown in the drawing
includes a limber pinking blade Il constructed
of steel ribbon stockof such thinness that it re
quires-'lateral support in order to withstand the 40
cutting force. Such a blade having a thickness
of .005-.015 inch- cuts effectively without sharp
ening, and when corrugated for its full height
of vshoes by interchanging the cutting-apparatus
holders for others of different shape.
The ad
40 vantage of such an organization is that the eX
pensive parts of the die can be used for decorat
ing uppers of diiîerent sizes and shapes, and the
manufacturer needV replace only the inexpensive
holders of thecutting apparatus when changing
45 -to
a different style of. shoe.
ì
`
The preferred embodiment of the invention
employs the ribbon blade cutter disclosed in my
Patent No. 2,078,569, dated April 27, 1937, and/or
the chain of punches disclosed in my applica
50. -tion Serial No. 102,383, filed September 24, 1936,
but in its broad aspects the invention is not lim
ited to, die structures using the cutting appa
ratus of said patent and application.
Another object of the invention is to provide
55«an: improved die structure’which holds the cut
is so limber“ that it can be bent around sharp
curves'ìnclu'cling abrupt right angle bends. This
blade is disclosed in myy Patent No, 2,078,569,
dated‘April 27, 1937.
The cutting apparatus includes also a flexible
chain I9 madeup of blocks 2I, 22 having over
lapping lugs' connected by pivot pins 23, as
shown in Fig. 4. A tubular punch 25 is secured
to each of the blocks 2|, and two similar, but
smaller punches 2B are'secured to each of the
blocks 22. The punchings which enter the tubu
lar punches arevdischarged through passages 28 55
2
:21,100,847
opening through the sides of the blocks, as shown
in Fig. 3. The detailed construction of such a
chain of punches is shown in my copending ap
shaping the knife I1 and chain I9 to the contour'
of the edge to be decorated.
The material which is to be punched and
plication Serial No. 102,383.
pinked is supported above the cutting apparatus
The knife I1 and chain I9 rest on the base II
and are held firmly in the channel between the
by a stripper plate 5I. Studs 52 extend down ‘DI
ward from the stripper plate into openings 53
(Fig. 2) in the base II. A bushing 55 surround
holding plates I3 and i4 by clamping the hold
ing plates in a manner hereinafter explained.
The plates I3 and i4 are constructed of ply
10 wood.
The edge of the holding plate I3 and the
rearward faces of the blocks of chain I9 provide
the lateral support for the knife I1. The holding
ing each of the studs 52 has a recess 5S and is
held at a definite level in the opening 53 by a clip
51, the ends of which extend through the re
cess 56. 'I'he clips extend through holes in the
plywood 34 just below the metal plate 32, and
plate i4 has channels 39 in its bottom face for _y >are held firmly in the base by friction. When
the escape of punchings from the passages 28.
these clips 51 are inserted in the base as far as
The base Il is of laminated construction.
That illustrated includes a metal base plate 32
on which rest the knife I1, chain I9, and holding
plates I3 and i4. The die structure by which the
cutting apparatus is supported must be of such
thickness that the cutting apparatus is located
in correct operating position when the die struc
ture is resting on the die holder of the machine
with which the invention is to be used.
By combining the relatively thin metal base
25 plate 32 with plywood 34,'which makes a lami
the length of the holes will permit, their mid
portions extend beyond the side of the base so
that they can be hooked or gripped firmly when
they are to be withdrawn.
A spring 50 surrounding each of the studs 52
is compressed between the stripper plate 5 and
the bushing 55. A screw 62 threaded intothe
lower end of the stud 52 limits the upward move
ment of the stud, and since the bushings 55 are
held at definite levels by the clips 51, the springs
' 50 hold the stripper plate ata definite level with
nated wooden base under the metal base plate 32,
the cutting apparatus can be held at the desired
height, and the weight of the die structure can
be kept low. Wear of the bottom face of the
30 plywood would change the thickness of the die
structure, but such wear is prevented by provid
the top of the plate slightly higher than the cut
ting edges of the punches 25 and flexible
ing a metal surface or runners 35 on the bottom
plates I3 and I4, though not necessarily of the
of the base II. Flat head, countersunk screws
31 threading into the runners 35 clamp the edges
35 of the plywood between metal laminations of
the base.
'
.
Undercut guides 39 are fastened to the base
plate 32 along two parallel sides by screws 49.
'I‘he cutter holding plates I3 and I4 have projec
40 tions 4! extending into the undercut channels of
the guides 39 so that the plates I3 and I4 are
dovetail slides held on the underlying base by
the guides 39.
A stop 43 extends across the base between the
This stop 43
limits the movement of the holding plate I3 in a
rearward direction. A clamping member 45 is
45 guides 39 at their rearward ends.
drawn against the front edge of the holding
plate I 4 by screws 45 that threadV into nuts 41
50 embedded in the plywood 34. There is a recess
49 in the front edge of the base II for punchings
in the channels 39 to drop through. Without
this recessthe escape of punchings from the
channels 3i! would be'blocked by the clamping
55
member 45.
'
By removing the screw 45, the clamping mem
ber 45 can be taken off and the, cutter holding
plates i3 and I4 can then be slid forward and
removed from the die structure.k Other plates
60 which form a different contour channel for hold
ing the cutting apparatus can be inserted in
place of the plates I3 and I4. If the knife I1 is
to be used without the chain I9, a narrower
channel is required, since the edge of the forward
65 cutter holding slide has to clamp the ribbon
knife against the rearward slide. -
'I‘he plywood cutter-holding slides can be
made with a jig or band saw to a contour corre
sponding to the shape of the piece to be pinked
70 or decorated. The same knife I1 and chain I9
can be used Vwith slides having different contour
edges. The invention makes it possible for a
manufacturer to decorate a wide variety of
shapes and styles of shoe uppers with one base
II and interchangeable cutter-holder slides for
blade I1.
.
The stripper plate 5I has a slot 54 over the
cutting apparatus, the slot being, of course, the
same in contour as the channel between the
same width.
'
The shoe upper, or other sheet, to be decorated-v
is positioned with respect to the cutting appa
ratus by pushing the edge of the sheet against
formation studs 56. These studs extend through
slots 66e in the stripper plate and are bent-up
portions of springs 61 connected to the stripper
plate by rivets 58 which are located at a distance 40
from the formation studs 66 in order to permit
the springs 61 to bend and the formation studs
to move down flush with theV top surface of the
material being cut when the die is in use.
Whenever other cutter holder slides are in
terchanged with the holders I3 and I4 to ob
tain a different shape of channel for the cutting
apparatus, it is necessary to change to a new
stripper plate having a channel corresponding
to that between the cutter-holder slides. The 50
clips 51 are withdrawn and the stripper plate
can then be lifted clear of the base. A new strip
per plate is placed in position with its bushings
55 in the openings 53 and the clips 51 are again
inserted.
55
The stripper plate is of thin metal and is an
inexpensive part of the die. The cutter-holder
slides I3 and I4 are even less expensive and it
will be apparent, therefore, that this invention
greatly reduces the cost of equipment necessary 60
for cutting and punching different sizes and
styles of shoe uppers. The same cutting appa
ratus is used for all sizes and styles. There isA
no expensive setting of punches or cutters in
fixed organizations useful for decorating an edge 65
of only one contour.
The die structure of this invention is not
limited to the particular embodiment which has
been illustrated and described, and features of
the invention may be used without others.
70
I claim:
l. A cutting die comprising a flexible cutter, a
base supporting the flexible cutter, complemen
tary members on the base on opposite sides of
the cutter shaped to form a channel of permanent
3
2,100,847
contour for holding the flexible cutter to the de
sired outline to be cut, and means detachably se
curing the holding members in position so that
said members are readily interchangeable with
others of different contour.
2. A die structure including a base, guides se
cured to and extending along two sides of the
base, two cutter holders held in position on the
base by the guides, said holders having confront
10 ing edge faces shaped to the contour of the cut
to be made, and a clamp for moving the cutter
holders toward one another to clamp cutting ap
paratus between said confronting edge faces.
3. In a die structure, a base, cutter holders
having spaced edges forming a channel for hold
ing the cutter apparatus, retaining means for
keeping the cutter holders on the base and for
preventing lateral displacement of them on the
base, and clamping means adapted to move the
20 cutter holders together to reduce the width of
the channel which they form.
4. Apparatus for punching a series of deco
rative holes along the edge of a shoe upper or
other work, said apparatus comprising a plurality
25 of punching devices, a supporting base on which
the punching devices rest, two plates fastened to
the base and having cooperating edge faces be
tween which the punching devices are held to
maintain them on a line having the contour de
30 sired, and a channel between the base and one of
the plates for the escape of punchings.
5. A die structure comprising a laminated base
having a relatively thin metallic top plate for
supporting the cutting apparatus, metal covering
35 over at least a portion of the bottom face of said
base, a relatively light non-metallic section be
tween the top plate and metal of the bottom face,
said non-metallic section comprising the greater
part of the thickness of the base, and means
40 above the top plate for holding the cutting appa->
ratus against displacement on said plate.
greater than the thickness of said metal plate,
and means uniting the wood and metal lamina
tions into a unitary base, guides fastened to the
top of the base along two -sides of the base, said
guides having channel recesses in their confront
ing edge faces, two slides extending between the
guides and projecting into the channel recesses,
spaced edge faces on the slides defining a chan
nel for holding to a desired contour flexible cut
ting apparatus resting on the metal plate, a
clamping plate at one end of the base and ex
tending above the base and across the end face 15
of one of the slides, a screw for drawing the
clamping plate toward the base and urging one
of the slides toward the other to clamp the cut
ting apparatus in the channel between the slides,
and a member embedded in the plywood with 20
threads for holding said screw.
9. In a cutting and punching die, a laminated
base having a metallic top plate and plywood
laminations under the top plate, a stripper plate,
studs extending downward from the stripper 25
plate, a bushing freely ñtting around each of said
studs, stops at the lower ends of the studs to keep
the bushings from coming off the studs, openings
in the base into which the bushings fit, clips ex
tending through the plywood just beneath the top 30
plate and held in position by friction against the
plywood, each of said clips extending across a
shoulder on an adjacent bushing to hold the
bushing in the opening in the base, and a spring
surrounding each of the studs and compressed 35
between the bushing and the stripper plate,
10. In a cutting or punching die, a base, bush
ings detachably held in the base, a stripper plate,
studs extending downward from the stripper
plate and through the bushings, a stop at the low 40
er end of each stud to limit its upward movement
6. In a die structure, a metal supporting plate
for the cutting apparatus and means for holding
through the bushing, and a spring compressed
between the stripper plate and each of the bush
the cutting apparatus against displacement on
ings.
45 said plate, plywood laminations secured to the
under side of the metal plate and increasing the
11. Improvements in dies comprising a stripper
plate for yieldingly supporting a piece of work
thickness of the die structure to raise the level of
over cutting apparatus on a base, said stripper
the cutting apparatus when the die structure is
plate resting on springs and having studs eX
tending into bushings located in, but readily re
movable from the base.
in the cutting or perforating machine with which
50 it is intended to be used, and a metal bottom
under the plywood and adapted to keep the ply
wood out of contact with the die support of the
machine.
7. A die structure including a laminated base
55 comprising a relatively thin metal plate, ply
wood laminations under the plate, metal covering
at least a portion of the bottom face of the low
est plywood lamination, the combined thickness
of said plywood laminations being substantially
60 greater than the thickness of said metal plate,
and means uniting the wood and metal lamina
tions into a unitary base, guides fastened to the
top of the base along two sides of the base, said
guides having channel recesses in their confront
65 ing edge faces, two slides extending between the
guides and projecting into the channel recesses,
70
least a portion of the bottom face of the lowest
plywood lamination, the combined thickness of
said plywood laminations being substantially
50
12. A cutting die comprising a flexible cutter,
a base supporting the ilexible cutter, members on
the base on opposite sides of the cutter and form
ing a channel of a given shape for holding the
flexible cutter to the desired contour to be cut, r'
means detachably securing the holding members
in position so that said members are readily in
terchangeable with others of different contour, a
stripper plate above the base and having a slot
with a contour corresponding to that of the
channel which holds the flexible cutter, studs ex
tending downward from the stripper plate, a
bushing around each stud, a stop at the lower end
of each stud to limit its upward movement
through the bushing, a spring compressed be 65
tween the stripper plate and each of the bushings
and spaced edge faces on the slides deñning a
channel for holding to a desired contour flexible
for yieldably holding the stripper plate above the
base and cutter, and clips extending through the
cutting apparatus resting on the metal plate.
base and into the bushings for detachably con
8. A die structure including a laminated base
comprising a relatively thin metal plate, plywood
laminations under the plate, metal covering at
necting the bushings and the base.
MERLE E. HALSTEAD.
70
Документ
Категория
Без категории
Просмотров
0
Размер файла
578 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа