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Патент USA US2405128

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Aug. 6, 1946.
1_, G. BERQUlsT
v
2,405,128
FORMING MACHINE
Filed April 8, 1944
5 Shee’cs--Shfmïl l
Aug- 6, 1946.
L. G. BERQUlsT
2,405,128
FORMING MACHINE
Filed April 8, 1944
5 Sheets-Sheet 2 '
Aug. 6, 1946.
L. G. BERQUls-r
2,405,128
FORMING MACHINE
Filed April 8, 1944
5 Sheets-Sheet 3
Aug- 6, 1945-
L. G. BERQUIST
2,405,128
FORMING MACHINE
Filed April 8, 1944
I
ZZ
5 Sheets-Sheet 4
Àug. 6, 1946.
-
L, G. BERQUgST
’
.2,405,128
FORMING MACEENE
Filed April 8, 1944
5 Sheets-Sheet 5
Patented Aug. 6, 1946
2,405,128
UNITED STATES PATENT OFFICE
2,405,128
FORMING MACHINE
Leonard G. Berqulst, Niles, Mich., assigner to Na
tional-Standard Company, a corporation of
Michigan
Application April 8, 1944, Serial‘No. 530,204
9 Claims. (Cl. 153-28)
1
This invention relates to forming machines for
shaping a continuous strip of metal, and more
particularly to a machine wherein a strip of
metal is drawn between forming rolls, and may
subsequently be h‘elically wound and soldered to
form a flexible tube.
The primary object oi’ the present invention
is to provide an improved forming machine
wherein the space between the coacting rolls
can be regulated very accurately by individual ad 10
justing means, and the machine may be opened
up to receive a new strip of metal without dis
turbingthe individual adjusting means.
The invention is illustrated in a preferred em
bodiment in the accompanying drawings in 15
which
Figure 1 is a side elevational view of a ma
chine embodying the invention; Fig. 2, a tcp
plan view of the same; Fig. 3, a fragmentary
Z
again as far as it can go, the forming rolls will
be returned to operative position Without dis
turbing their individual adjustment.
As will be seen in Fig. 6, each of the auxiliary
carriers or yokes I2 is adjustably secured to the
carrier II by means of a machine screw 24, ex
tending through an enlarged clearance slot 25. A
threaded stud 26 is secured to the auxiliary car
rier I2 by means of a pin 21. The stud extends
through an arm 28 of the carrier II, and is pro
vided with a pair of nuts 29 and 30, which en
able the auxiliary carrier to be adjusted up and
down on the carrier Il with a high degree of
accuracy, when the bolt 24 is loosened.
As will be understood from Figs. 3 and 5, the
forming rolls are each provided with ball bear
ings 3I and the upper and lower rolls are com
plementary to each other, so that a metal strip
advancing from right to left as viewed in Fig. 1,
will gradually be shaped into the form shown in
Fig. 5, as it leaves the machine. In that shape
the metal strip is ready to be wound helically
and soldered to itself to form a metal flexible
tube. The machine is provided at its entry end
with an upper flat guide roll 32, which is carried
sectional view taken as indicated at line 3-3 of 20
Fig. 1; Fig. 4, an end elevational view of the entry
side of the machine; Fig. 5, a fragmentary sec
tional view taken as indicated at line 5-5 of Fig.
l; Fig. 6, a vertical sectional view taken as indi
cated at line 6--6 of Fig. l; Fig. 7, a fragmentary 25
by the main carrier I I so as to move up and down
elevational View showing a modified construction;
therewith. A lower guide roll 33 is journalled on
and Fig. 8, a side elevational view showing an
the main frame. The machine is also provided
other modified constrution.
with a pair of lateral guide rolls 34 and 35, which
In the embodiment illustrated in Figs. 1_6, a
main frame 9 is provided with an upwardly ex 30 are grooved to engage and bend one edge of the
metal strip down and the other edge up before
tending standard ID on which are slidably mount
the strip reaches the horizontal grooved guide
ed a series of main carriers I I. An auxiliary car
rolls 3S. The guide roll brackets are adjustable
rier I2 ls secured to each of the main carriers II,
on the machine by means of nuts 3l to accommo
and afford bearings for upper forming rolls I3
which are complementary to lower forming rolls 35 date different widths of strips.
Whenever a length of metal strip is used up,
I4 journalled in yokes I5, which are rigidly se
the operator must open up the machine to admit
cured to the main frame by means of bolts I5.
a new strip. This is done by unscrewing each or"
As will best be understood from Fig. 6, a series
the clamping screws 2I and threading the strip
of hollow upwardly extending tapped liner pins
I1 are secured to the main frame by means of 40 through the guide rolls and between the coacting
forming rolls. The forming rolls may then be
set screws I8. Each of the carriers Il is bored
brought back into properly adjusted relation by
t0 make a, sliding connection With one of the
merely turning each of the clamping screws until
pins I'l. A compression spring I9 rests on the top
the carrier travels down as far as it can go.
of each liner pin I'l and bears against a bushing
In the modiñcation shown in Fig. '7, the appa
20 which makes a, tight pressed iit with the up
ratus is similar, except that the clamping screws
per end of the bore in the carrier. A clamping
2I have been replaced by a toggle mechanism.
screw 2I, having a handle 22 has a shouldel` 23
The main frame is provided with an upwardly
to bear against the bushing, and its threaded
extending arm 38, on which is pivoted at 39 a
lower shank extends into the tapped opening in
the liner pin I'I. Thus it will be understood that 50 lever 40. The lever is pivoted at 4I to a pitman
42, which is pivotally connected at 43 to a shaft
when the clamping screw is unscrewed, the spring
44 to raise and lower the carrier II. rl‘he mech
I9 will urge the carrier II upwardly and sufli
anism is self locking, and to open the rolls it is
cient space may be provided between the form
merely necessary to move the arm 40 to the posi
ing rolls I3 and I4 to permit a ilat strip of metal
to be inserted. When the screw is turned down 55 tion indicated by the dotted line.
2,405,128
4
3
In Fig. 8, is shown somewhat diagrammatically,
another modiñcation wherein one set of forming
rolls is journalled in the bottom frame 45, and
the other set is journalled in the top frame 45,
which is hinged to the lower frame at 41. At the
entry side of the machine is a clamping arm 48,
which is provided with a link 49, pivotally secured
to the top frame at 50, so that when the arm 48
is thrown downwardly about a bearing socket 5I,
the rolls will be drawn into operative position.
The top frame may be released by swinging the
arm 48 to the position shown by dotted lines to
admit a new strip of metal. The top forming rolls
are individually adjustable. It will be understood
that the clamping latch and hinge are positioned
out of the line of travel of the strip. If preferred.
the hinge and latch may be replaced by screws,
urges said carrier away from ñxed position on
said pin, and a manually operable clamping screw
is threaded into the liner pin to draw the carrier
to ñxed position.
4. A machine as speciiied in claim 1, in which
the main carrier is slidably mounted on the frame
and the means for moving the main carrier in
cludes a manually operable toggle mechanism.
5. In a machine for forming a continuous strip
of metal: a frame; a plurality of lower forming
rolls journalled in said frame; a main carrier
slidably mounted on the frame above each of said
lower rolls;
an auxiliary carrier adjustably
mounted on each of said main carriers; an upper
forming roll journalled in each of said auxiliary
carriers, said roll being complementary to the
companion lower forming roll to shape a strip of
metal drawn between said rolls; and means for
moving said main carriers to and from a ñxed
The foregoing detailed description is given for 20 position, said means opening the space between
clearness of understanding only, and no unneces
the upper and lower rolls.
6. A forming machine comprising: a plurality
sary limitations should be understood therefrom,
of forming rolls journalled in a fixed frame; a
for some modifications will be obvious to those
plurality of complementary forming rolls jour
skilled in the art.
25 nalled in said frame t0 coact with said first men
I claim:
tioned rolls and progressively shape a strip of
l. In a machine for forming a continuous strip
of metal: a frame; a forming roll journalled in
metal drawn between said rolls, said complemen
tary rolls having individual adjusting means for
said frame; a main carrier mounted on said
regulating the operating space between rolls; and
frame; an auxiliary carrier secured to said main
carrier; a second forming roll journalled in said 30 means for opening the space between the coact
cams, or
some other conventional clamping
means.
auxiliary carrier to coact with the ñrst mentioned
roll in shaping a strip of metal drawn between
said rolls; means for accurately adjusting the
position of the auxiliary carrier on the main car
rier; and means for moving the main carrier
bodily to and from a ñxed position on the frame
without disturbing the adjustment between car
riers.
ing rolls without disturbing the individual ad
justing means.
'7. A' machine as speciñed in claim 6, in which
the means for opening the space between coact
ing pairs of rolls includes manually operable
clamping screws.
8. A machine as specified in claim 6, in which
the means for opening the space between coact
ing pairs of rolls includes a toggle lever mecha
2. A machine as specified in claim l, in which
the main carrier is slidably mounted on the frame 40 nism for each complementary forming roll.
and the means for moving the main carrier in
9. A machine as speciñed in claim 6, including
cludes a manually operable clamping screw.
two pairs of guide rolls, at one end of the frame,
3. A machine as specified in claim 1, in which
to direct the metal strip into the ñrst pair of
forming rolls.
the main carrier is slidably mounted on a hollow
tapped liner pin secured to the frame, a spring 45
LEONARD G. BERQUIST.
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