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Nov. 22, 1949
‘
A. F. DYSON
’
2,489,125
APPARATUS FOR CRIMPING 0R CORRUGATING
STRIP OR SHEET MATERIAL
Filed Dec. 19, 1946
3 Sheets-Sheet l
HETHUK FEEDER/CK D/so/v
jygwénlg
Nov. 22, 1949
A. F. DYSON
APPARATUS FOR CRIMPING OR CORRUGATING
2,489,125
STRIP OR SHEET MATERIAL
Filed Dec. 19, 1946
' 3 Sheets-Sheet 2
5mg
wh
M9160)»: I
HEW/a2 FEEDER/CK 0X50”
W
Nov. 22, 1949
A. F. DYSON
APPARKTUS FOR CRIMPING OR CORRUGATING
‘
2,489,125
STRIP OR SHEET MATERIAL
Filed Dec. 19, 1945
'
w.“
5 Sheets-Sheet 5
Patented Nov. 22, 1949
2,489,125
UNI TED :STATES PATIENT LOFiFlI'TCE]
APPARATUS FOR. 'CRIMPING OR CORRUGAT
ING" STRIP ‘OR; SHEET MATERIAL
l Arthur; Frederick Dyson, Leeds, England, assignot'
to. Imperial. Chemical Industries Limited,.a .core
j. poration of ' GreatBritain
»'App,lication Decemberl 19, 1946,‘ ‘Serial No; 7172220
.In‘rGreat‘Britain December 21, 19.45
2 Claims.
.1.
This invention relates to an improved machine
‘for crimping or corrugating strip‘orfsheet mate
rialand is. applicable with particular advantage
to the manufacture of corrugated elements of the
kind employed. in secondary surface heat ex- 1
change. devices.
According to the present invention we provide
an improved machine of the kind referred to
“the term'“closed position” of a jaw member .is
meant‘ the position of that member after ithas
moved the full ‘extent of ‘its travel toward‘ the
other jaw member.
It will be seen, therefore, that the two. sets of
forming blades are adapted for intermittent
mating engagement by the reciprocating to and
fro movement of the aforesaid jaws, and succes
comprising a pair. of complementary jawv mem
sive mating engagements‘ being displaced one
bers each provided with a set of parallel forming x ’
pitch forwardly and backwardly, alternately, by
blades separated by slots in' which are located
the transverse reciprocating movement of a jaw
and forming one half. of. each. corrugation.
Preferably the jaw members. are actuated by
means of a camshaft and co-operating rocker
ejector bars. Each jaw member is adapted to
reciprocate or move to and froin a “longitudinal”
direction (hereinafter de?ned) between “open”
and “closed” positions (also hereinafter de?ned), ‘
whereby the sets of parallel forming blades mate,
one set with the other, when both members are
‘in their closed positions. ‘Said jaw members‘ are
also adapted to reciprocate'relative to each other
arms, the» said camshaft being mounted paral
lel to the said jaw members. Preferably also
Itheto and fro. reciprocating movement of the
jaws is effected by a cam or cams on the cam.
shaft, which same cam or cams operates ‘the
in a “transverse” direction (hereinafter de?ned) 20 rocker arm or arms which effect the transverse
by an amount equal to one blade ‘pitch. The
reciprocating movement.
ejector bars are incapable of movement in the
One embodiment or our invention is illustrated
direction of said‘ longitudinal reciprocation and
by way of example .in the accompanying draw
ings in which
4-25
jaw member is in the'open‘ position the edges of
Figure 1 is a‘ front elevation of a machine con
its blades are substantially ?ush with the edges
.structed in accordance with the invention.
of the ejector bars. The movementsof saidi jaw
Figure 2 is a cross-sectional- view of the ma
members are so coordinated that transverse
chine looking in 'theldirection of arrows A—A in
‘movement of a jaw-‘member inv the direction of‘
Figure 1.
‘feed of the materialliee. forwardly)‘ takes‘place
Figures 3, 4,5, 5a., 6. and.‘ 6a arefdiagrammatic
with that member ‘in the closed'position and with
sectional views showing “the various positions of
‘the other jaw member in the open ‘position.
the jaws during one ‘revolution of the camshaft.
‘Transverse movement of a jaw member-"in the
Referring to Figures 1 and 2 of the drawings,
are positioned so that-when their cooperating
‘direction opposite» to'the- feed of the material
which illustrate .a desirable practical embodi
(i. e. rearwardly) takes ‘place with ‘that member ‘
ment of the invention, two upstanding side guide
in the open position and with the other jaw
members I are secured in spaced reia'tion to a
\member in theclosed position. In both cases,
base plate’ 2. Vertical sliding members 3 are‘ 10
the crimped sheet material remains gripped by
catedin slots 4 provided in the side guide mem
the blades of the jaw member that is in closed» bers I, the uppermost portion of. the said sliding
‘position until said relative transverse movement
members being provided with transverse slots 5
is completed, and is positively advanced by-each
in which slots. is mounted the upper jaw hous
forward stroke of the transversely reciprocating
ing ‘8. The upper‘ jaw member 7 comprises a
member. The jaw ‘members reciprocate alter
set of parallel forminglblades 8 each separated
nately in the aforesaid longitudinal direction,
by an intermediate spacing plate 9 the said
one member moving while theother member is
.blades and spacing plates being interposed be
stationary in its closed‘ position.
tween a parallel angular member In and a com
By the term “longitudinal” is meant a direc
plementary clamping piece H, the complete jaw
tion in the plane of the forming blades at right
member being adjustably secured to the jaw
angles to their edges. By the term “transverse”‘-il¢f housing 6 by means of bolts l2 and nuts i3, the
is meant a direction‘ at right angles to the plane
said bolts passing through elongated holes pro
of the blades. By the term"‘open'position”= of a
vided in' the jawmember which holes ‘have their
‘jaw member is meant the position of that mem
major axes in‘ the/vertical plane. ‘Three ad
ber after it has‘ moved the‘ full extent of its
justing ’ screws I4 together with locknuts [5
‘travel away from the other" jaw "member. By"!55 'are provided in the top portioniof the jaw hous
2,489,125
ing 6, the said screws extending downwardly
through the housing and communicating with
the upper jaw member ‘I to facilitate vertical
adjustment of the said member. The lower jaw
housing I6 is substantially of channel section
with the extremities of the ?anges extending so
camshaft. The cams 5I are disposed between the
cam plates 30 and the cam blocks 32 so that
when the camshaft is rotated the cams co
that they are received in locating slots I7 and
I8 provided in the vertical sliding member 3.
The lower jaw member I9 comprises a set of
parallel forming blades 20 each separated by an
operate with the said cam plates and cam blocks
thereby reciprocating the upper and lower jaw
members in the vertical plane. Located trans
versely across the machine and intermediate
the upper and lower jaw housings are two ejector
guide members 52 which are secured to the in
nermost face of the side guide members I by
intermediate spacing plate 2I the said blades and
spacing plates being interposed between a paral
means of bolts 53. Pivoted at one end of each
ejector guide member is a rocker arm 54 which
lel angular member 22 and a complementary
is free to rotate about a pivot pin 55, the said
pin extending through the ejector guide member
clamping piece 23‘, the complete jaw member
being secured to the jaw housing I6 by means 15 52 and the side guide member I and being secured
by a nut 56. The lower portion of the rocker
of bolts 24 and nuts 25. Ejector. bars 26 and 21
arm is provided with a forked end 51 which end
receives a roller 58 secured in place by a pin 59.
respectively by the complementary forming
The roller 58 operates with the cam 5| thereby
blades and intermediate spacing plates by which 20 rotating the rocker arm, the opposite end of
which co-operates with an adjustable tappet 60
the aforesaid slots between the blades are pro
screwed into the side of the upper jaw housing
vided, the arrangement being such that the
6 to move the latter in the horizontal plane by
ejector bars 26 are incapable of movement in a
an amount corresponding to one pitch of the
vertical plane but can move horizontally with
the upper jaw member ‘I; while the ejector bars 25 jaw member. A horizontal quick-return mecha
nism is provided for the upper jaw housing 6
21 are incapable of movement. Located on the
comprising a connecting bar 6| extending across
underside of the lower jaw housing adjacent
and being secured to shouldered studs 62 screwed
to the side guide members I are two cam plates
36 detachably secured by means of Allen screws 30 into the vertical sliding members 3. A further
are accommodated in parallel slots 28 and 29
formed in the upper and lower jaw members
3|.
Two cam blocks 32 which project inwardly
two bolts 63 are passed through holes 64 provided
in the connecting bar, the said bolts being
threaded through double concentric compression
the vertical sliding members 3. A return spring
springs 65 and 66 before being screwed and
'I I, as shown in Figs. 3 through 6, is provided be
tween the lower face of slide 3 and base plate 2 35 locked into the upper jaw housing 6 by means
are secured by bolts ‘Ill to the lower portion of
to urge the slide into its upper position, corre
sponding with the open position of upper jaw ‘I.
Two studs 33 are screwed into the underside of
of l'ocknuts 61. Located on the studs 62 adja
cent the connecting bar 6| are spacer sleeves 68
which are clamped against the connecting bar
and the latter against the shoulder of the studs
the lower jaw housing I6 so that they extend
downwardly, the said studs being spaced widely 4.0 62 by means of wing nuts 69 thereby compress
ing the springs 65 and 66. When it is required to
apart and to one side of the centre-line of the
inspect or clean the jaw member blades the up
jaw housing. Secured to the ends of the studs
per jaw member ‘I, when in its open position,
33» by means of nuts 34 are crank arms 35 to
can be moved in the horizontal plane clear of
tending downwardly and being located on the 45 the lower jaw member I9 by slackening the wing
nuts 69 thereby releasing the compressive load
vertical centre-line of the machine by virtue
on the springs 65 and 66.
of the said crank arms. A further two bolts 31
The sequence of operations performed by the
located intermediate the bolts 36 are screwed
machine during each revolution of the cam
into the base plate 2 and locked in position by
means of locknuts 368 so that they project up 50 shaft are hereafter described with reference to
Figures 3-6 of the drawings.
wardly. Threaded over the bolts 36 and 31 is
When inserting a new length of material A
a clamping bar 33 which is supported against
the upper jaw member ‘I will be in the open po
the underhead of the bolts 3'] by compression
sition while the lower jaw member I9 is in its
springs 45 which springs are threaded over the
closed position (see Fig. 3). During rotation
bolts 36 and extend between the underhead and
of the camshaft through 90°, the upper jaw
the underside of the clamping bar. The side
member ‘I closes thereby forming one half of a
guide members I are provided with holes M which
corrugation as shown in Fig. 4. During rota
holes are counterbored to provide housings 42
tion to the 180° position the upper jaw member
for the ball bearings 43, the said guide members
I being so positioned on the base plate 2 that
1 remains closed whilst the lower jaw member I9
the bearings 43 are in alignment so as to receive
opens to free the blades of this jaw from mesh
ing engagement with the blades of upper jaw 'I
and support the camshaft 44. Cover plates 45
(Fig. 5). During further rotation of the cam
and 66 are ?tted over the housings 42 and are
shaft to the 270° position, the rocker arms 54
secured to circular facings 41 provided on the
follow the contour of the cams 5| and allow the
outermost side of the guide members I by means
upper jaw member ‘I, with the aid of the double
of setscrews 45. The cover plate 46 is provided
concentric compression springs 65 and 66 to
with a central hole 49 through which passes the
move along transversely by an amount corre
camshaft extension 56 to which extension is
keyed a driving gear or pulley (not shown). 70 sponding to one pitch at the same time pulling
the material A along by a similar amount, as
The camshaft is provided with two cams 5I each
seen in Fig. 5a. Both jaw members are closed
located adjacent the vertical sliding member 3,
when the camshaft has rotated through 270°,
the said sliding member being provided with an
having formed one complete corrugation. Dur
elongated hole to enable it to move upwardly
which are screwed bolts 36, the said bolts ex
and downwardly without interfering with the 75 ing the completion of the revolution the upper
5
2,489,125
jaw member 1 opens leaving the material A
nesting in the lower jaw member 19 (Fig. 6a),
ejector members, one set for each set of form
ing blades, means stationarily supporting said
whilst the rocker arm 54 in following the con
tour of the cam 5| pushes the upper jaw mem
ejector members within said slots in such posi
tion that when their cooperating jaw member
is in its open position the outer edges of its blades
are substantially flush with said ejector mem
ber to its original position thereby compressing
the springs 65 and 56 against the connecting
bers, said ejector members being incapable of
bar 6|. The material A remains gripped in the
transverse movement relative to their respec
jaw 19, because of its abutment against the
tively cooperating jaw members; and actuating
ejector bar 26. Thus after each succeeding half
mechanism adapted and arranged to eifect the
corrugation is formed, the ejector or stripper
reciprocating to-and-fro movement of said jaw
bars 26 or 2'1, respectively, prevent the mate—
members and, while one of the jaw members is in
rial A from being withdrawn from that jaw
open position, to e?ect relative transverse move
which remains in the closed position While the
ment between the jaw members alternately in
other jaw is opening. The foregoing sequence
of operations are repeated during each subse 15 opposite directions with consequent displace
ment of successive mating engagements of said
quent revolution of the camshaft.
sets of blades forwardly and backwardly, alter
Whilst I have illustrated and described by
nately,
by an amount equal to one blade pitch.
way of example one construction of my inven
2. A machine as claimed in claim 1, in which
tion it will be understood that the details may
be varied without departing from the nature of 20 said actuating mechanism comprises unitary ro
tary cam means, and separate driving connec
the invention, as for example, the jaw members
tions between said cam means and said jaw mem
may conveniently be constructed from the solid
bers, together with cooperating return springs,
bar instead of using a series of parallel plates.
all adapted and arranged both to eiifect the
I claim:
reciprocating to-and-fro movement of said jaw
1. A machine of the kind described comprising
members and also the reciprocating transverse
a pair of complementary jaw members, means
relative
movement between them.
supporting said jaw members for reciprocating
movement of each, in alternating succession,
toward and away from the other into closed and
open positions, while permitting relative trans
verse movement between said members when
either is in open position, a set of parallel form
ARTHUR FREDERICK DYSON.
REFERENCES CITED
The following references are of record in the
ing blades carried by each jaw and separated
?le of this patent:
by slots, the pitch of the blades being the same
FOREIGN PATENTS
in both sets and the sets being adapted and 35
arranged for mating engagement when both said
Country
Number
jaw members are in closed position; sets of
17,219
Date
Great Britain _____ __ Aug‘. 6, 1904
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