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Патент USA US3098444

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July 23, DEVICE
1963 FOR THE
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RQLLBRS IR RM'ARY
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Filed April 19. 1m
United States Patent 9
IC€
3,098,434
Patented July 23, 1963
1
2:
3,098,434
and which,’ at the'same time, serves as rn'eans'for apply-vv
DEVICE FOR THE ADJUSTMENT 0R “CORRELAT
ING” OF THE ENGRAVED ROLLERS IN ROTARY
PRINTING MACHlNES
ing the roller against the‘cylinder with the appropriate
Jean Lime, .Mulhouse, France, assignor to S'ociete Alsa
cienne tie Constructions Mecaniques, Mulhouse, France,
ings which show, by way of nomlirnitative example, one
form of embodiment of the invention. In‘these drawings:
pressure.
The invention is illustrated in the accompanying draw;
a company of France
FIGURE 1 is a diagrammatic‘side view of the essential
elements of a rotary printing machine provided with cor
Filed Apr. 19, 1960, Ser. No. 23,175 Claims priority, application France Apr. 24, 1959 ‘
9 Claims. (Cl. 101-178)
The present invention relates to an improvement in
rotaryv printing machines or similar mechanisms of the
type wherein rollers, for example engraved rollers, are '
in contact with a central freely mounted- cylinder and'are
relating means according to’the present invention, and
10
FIGURE 2 is a view on'a larger scale showing a detail
of FIGURE 1.
The rotary printing machine for printing textile fabrics
or similar articles shown in the drawings comprises a
frame 1 on which is pivotally mounted a horizontal shaft
each fast with a toothed wheel in mesh with a central 15 2 which carries a central cylinderv3 mounted freely on said
driving toothed rim co-axial with the said cylinder.
shaft. Engraved printing rollers 4 are distributed about
This improvement is concerned with the readjustment
the periphery of the cylinder and are given the task of
(commonly referred to as “correlating”) of the relative ‘
positions of the peripheries of the various rollers, more
particularly with a view to ensuring the correct registering,
on a textile fabric or other material, of the motifs printed
by the various rollers.
Up to the present day, this correlating work has been
printing on the fabric 5 which is applied against thesaid
cylinder with interposition of an intermediate cloth 6
known as a backing. The engraved rollers are rotated by
a device which comprises a central toothed rim 7 fast
with the shaft 2 and in mesh with individual toothed wheels
8 fast respectively ‘with the engraved rollers 4. The pitch ‘
effected by angular oifsetting of the peripheries of the
circle diameter of the toothed rim 7 differs from the diam
rollers relatively to their driving pinions by means of 25 eter of the cylinder 3, and, consequently, the pitch circle
mechanisms which were fairly complicated.
diameter of each toothed wheel 8 differs from the diam
eter of the engraved rollers.
The invention has as its object to provide a much
simpler device wherein the periphery of the rollers is no
Each engraved roller 4 is fast with a shaft 11 each end
longer offset relatively to their driving pinions, and which
of which is journalled in'a bearing 12 ?xed at one end of
permits the same results to be obtained.
30 an arm which is given the general reference numeral 13
and is constituted by a pneumatic jack whose cylinder is
According to the invention, individual adjustment means
are provided which make is possible to displace the
indicated at 14, the piston at 15 and the piston rod at 16.
The end of the jack cylinder which corresponds to the ‘
geometric axis of each roller parallel to itself on a theoreti
cal cylindrical surface co-axial with the cylinder, in such
other end of the arm thus formed can pivot on the frame 1
a manner that the roller remains in contact with the 35 about a pin 17 parallel to the shaft,.situated as near as pos
cylinder, the pitch circle diameter of the toothed rim
being different from the diameter of the central cylinder,
sible to the latter and substantially in the plane which con
tains both the axis of the roller 4 and the axis of the cen- '
tral cylinder 3.
either owing to the construction form of the machine in any
case or owing to the mechanisms being deliberately ar
The arm 13 is supported, in such a manner that its '
ranged in this way, so that the aforesaid displacement 40 angular position can be modi?ed slightly, by means of an
of the roller is accompanied by a sliding of its periphery
on the periphery of the cylinder.
In this way it is possible'to effect the successive correla
tion of each of the rollers, by acting on ‘the individual
adjustable-length device which is given the general refer
ence numeral 21 and which can pivot at one of its ends '
about a pin 22 parallel to the axis of the central cylinder ‘
and ?xed relatively to the frame and whose other end
adjustment means corresponding thereto in the requisite 45 carries a sleeve 23 which can slide freely on the rod' 16 of
sense and to the requisite degree.
the jack piston as illustrated, or can swivel freely relatively
In one form of embodiment, each roller is supported at
to the said rod.
least at one of its ends by an arm which can pivot on the
The sleeve 23 can rotate freely lon one end of a nod
machine frame about an axis parallel to the axis of the
said roller, and the-aforesaid individual adjustment means
24 and is retained in the axial sense ‘thereon by a tangen
tial pin 20 lodged in an annular groove 19 of the rod 24.
The other end of the rod 24 is journalled in a bore 25a
of an externally screwthreaded socket 25 screwed into
a boss 26 ‘fast with a member 27 constituting the main
are designed and arranged so as to effect a modi?cation
of the angular position of the said arm relatively to the
machine frame.
When the pivoting axis of the arm does not coincide
part of the device 21.
The said rod ‘24 comprises a
with the axis of the cylinder and is, therefore, spaced from 55 screwthreaded portion '28 which screws into a support 29
which is made fast with the member 27 by straps 31. It
the axis of the cylinder at a distance smaller or greater
than the radius of the said cylinder, the said arm is '
will now be appreciated that, if one rotates the screw 28, '
designed and arranged in such a manner that its length
the assembly 21 is made to lengthen or shorten, so that
can vary as a function of its angular position so that the
the arm 13 is made to pivot. During this movement,
conditions of engagement of roller and cylinder are ful 60 the axis of the roller 4 is displaced over a theoretical
?lled.
cylindrical surface co-axial with the cylinder 3, and of
-In one particular constructional arrangement, the arm
course the toothed wheel 8, ‘in mesh with the toothed
in question, which carries each roller, is made in the form
of a jack which constitutes an assembly of variable length
rim 7, rolls without sliding on the said rim, whilst the
surface of the roller 4 slides over the surface of the
3,098,434
3
4
central cylinder 3, by a certain amount corresponding
each adjustment means comprises an arm supporting a
printing roller at least at one end, said arm being pivoted
on the frame of the machine about an axis parallel to
to the di?erence between the pitch circle diameter of the
toothed wheel 8 and the diameter of the roller 4.
It will, therefore, be seen that by modifying the length
of the assembly 21 it is possible at ‘will to regulate the
setting of the relative position of the periphery of the
engraved roller 4 relatively to the positions of the other
the axis of the said roller, whereby a modi?cation of the
angular position of said arm with respect to the frame
of the machine can be effected.
‘3. A printing machine according to claim 2, wherein
engraved rollers and thus to ensure convenient correla
the pivoting axis of said arm is non-coincident with the
tion of the rollers in the desired arrangement.
axis of the cylinder, and the length of said arm can ‘be
In order to control the rotational movement of the 10 varied in dependence lon its angular position whereby
screw 28, in the present example there is provided a
Worm wheel 33 slidably ?xed on the rod 24 and meshing
with a worm 34 which is journalled in two bearings 35,
the conditions for engagement between the roller and
the cylinder are ful?lled.
4. A printing machine according to claim 3, wherein
36 fast with the member 27. The worm can be rotated
each of the said arms is constructed in the form of a
by means of an adjusting wheel 37 by means of any suit 15 jack which constitutes an ‘assembly of variable length and
able connection, for example a transmission comprising
which is also used at the same time for biasing the roller
rods 38 and universal joints 40.
Fixed positioning of the worm wheel 33 in the axial
sense is ensured by a tubular piece 41 screwed on to
against the cylinder.
5. In a rotary printing machine including a frame, a
backing cylinder journaled on said frame, a plurality of
the socket 25 and locked by a lock-nut 42. The piece 41 20 printing rolls spaced about the periphery of said backing
holds the wheel 33 against the support 29. When the
cylinder to print a strip material passed around the back
worm 34 is rotated, the worm wheel 33 rotates on itself
without being displaced axially since it is retained axially
between the piece, 41 and the support 29, whilst the rod
ing cylinder, and a plurality of cylinder and piston units
pivotably mounted on said frame and connected to the
printing rolls to yieldably urge the same towards said
24 can slide in the hub of the worm wheel and in the
backing cylinder, a driving gear disposed coaxially with
socket 25, whereas its threaded portion 28 is screwed
' said backing cylinder, a driven pinion secured on the
more or less far into the support 29 and the arm 13 is
displaced by a corresponding amount.
Each engraved roller 4 is supported at each of its ends
shaft of each printing roll and meshing with said gear
to transmit rotary motion from the gear over the print
ing roll to said backing cylinder, and longitudinal register
by an arm such as ‘13, and each arm 13 is provided with 30 adjustment means comprising a plurality of reciprocable
a supporting and adjusting device such as 21. The ad
justing devices 21 ‘of the two ends of a roller 4 are actu
ated from two hand wheels such as 37 and there is pro
vided a positive connection between the two adjusting
members supported by said frame and attached each to
one of said cylinder and piston units to impart swinging
motion to said units about their pivot on said frame as
said members are moved relative to said frame, said
devices of each roller, so as to ensure that the two roller 35 swinging motion of each one of said units displacing the
supporting arms are displaced synchronously and are
shaft of the associated printing roll along an arc of circle
constantly at the same level. In one form of embodiment,
coaxial with said driving gear to cause the driven pinion
the said positive connection is declutchable so that the
secured on said shaft to accelerate or decelerate the sur
two roller ends can be regulated individually since, in
face speed of said associated printing roll with respect
certain cases, more particularly When the engravings of 40 to the surface speed of the other printing rolls.
the printing rollers are offset, it is possible to obviate
6. A rotary printing machine according to claim 5, in
this by not making the said rollers strictly parallel.
which each of said cylinder and piston units has its cyl
The jack 14-—15 is a pneumatic jack which is used at
inder pivotally secured to said frame and its piston pro
the same time for applying the engraved printing roller
vided with a rod the outer end of which carries a bear
associated therewith against the central cylinder, with
ring for the shaft of the corresponding printing roll, said
the appropriate pressure.
longitudinal register adjustment means comprising a cas~
The angular displacements of the arms 13, intended
ing pivotally secured to said frame and housing a length
for ‘the correlating work, are in practice of small ampli
portion of said reciprocable member the outer end of
tude whilst broadly satisfying the requirements of cor
which carries a tubular member slidably mounted on said
relating adjustment.
The devices described can be used {with machines other
piston rod.
7. A rotary printing machine according to claim 6, in
than printing machines and, generally speaking, with any
which said reciprocable member has a screw threaded
machine wherein it is desired to shift angularly a roller
which is adapted to roll on another and which is driven
by a gear having the features set forth hereinbefore.
I claim:
length portion screwed through a wall of said casing,
1. A rotary printing machine for printing sheet mate
rial, comprising a central freely mounted cylinder, a plu
said reciprocable member being moved by means of a
hand operated worm located in said casing and meshing
with a worm wheel mounted on said reciprocable mem
ber to impart rotary motion thereto while permitting axial
displacement of the reciprocable member relative to said
rality of printing rollers in contact with said cylinder, a
Worm wheel.
toothed wheel fast with each roller, a central common
8. In a rotary printing machine of the type including
a freely rotatable backing cylinder and a plurality of
printing rolls mounted on axes parallel to said backing
gear wheel coaxial with said cylinder, each of said toothed
wheels meshing with said gear wheel, and ‘means for en
suring correct relative positioning, on the sheet material,
of the motifs printed by the said rollers, said means com
prising individual adjustment means to selectively move
the geometric axis‘ of each roller parallel to itself over a
theoretical cylindrical surface co-axial with said central
cylinder, so that the roller remains in contact with the
cylinder, the pitch circle diameter of the toothed gear
wheel being different from the diameter of the central cyl
inder whereby displacement of a roller is accompanied
by a sliding of its periphery over the periphery of the
central cylinder when the said individual adjustment means
are actuated.
cylinder spaced circumferentially therearound and biased
toward said backing cylinder whereby said backing cylin
der is driven by said printing rolls, common drive means
driving said printing rolls at a common peripheral speed,
means for moving the axis of at least one of said print
ing rolls parallel to itself and circumferentially of said
backing cylinder, the speed ratio between said common
drive means and said printing rolls being different than
the speed ratio between said printing rolls and said back
ing cylinder.
9. In a rotary printing machine of the type having
a backing cylinder and a plurality of printing rolls driv~
2. A printing ‘machine according to claim 1, wherein 75 mgly engaging said backing cylinder to drive said cyl
8,098,434
5
6
inder at a predetermined speed ratio with respect to said
printing rolls, common means for driving all of said print—
ing rolls, the improvement comprising means to adjust at
References Cited in the ?le of this patent
least one of said printing rolls by moving it circumfer-
UNITED STATES PATENTS
‘
k
.
entially
driving said
of said
printing
backing
rolls cylinder,
at a speedsaid
ratiocommon
differentmeans
from 5
{042"060
Kaiser
34551325‘; ''''''''''''
"""""""""""1%:
"Mas; 26’
is’ 1936
the speed ratio between said printing rolls and said backing cylinder so that upon adjustment of said one of said
printing rolls circumferentially slippage will occur be
2’870’70‘6
2:966:846,
Urban """""""""" " Jan 27’ 19,59
Lima """""""""" “ Jail 3’ 1961
tween the ‘surface of said one of said printing rolls and 10
said backing cylinder.
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