вход по аккаунту


Патент USA US3091184

код для вставки
May 2s, 1963
Filed DSO. 23, 1960
4 Sheets-Sheet l
May 28, 1963
Filed Dec. 25, 1960
4 Sheets-Sheet 2
May 2s, 1963
Filed Deo. 23, 1960
4 Sheets-Sheet 3
May 28, 1963
Filed Dec. 25, 1960
4 sheets-sheet 4
Patented May 28, 1963
of rapidly marking small irregularly shaped articles in a
precise and sharply defined manner.
Bertrand G. Harvey, Keene, NH., assigner to Marken!
Other objects an advantages of the invention will be
seen as the following description 'of a preferred embodi
Machine Company, Keene, NH., a corporation of New
ment thereof progresses in conjunction with the drawings,
in which:
FIG. l is a plan view of the printing apparatus accord
ing tc a preferred embodiment of the invention;
Filed Dec. 23, 1960, Ser. No. 78,122
11 Claims. (Cl. lill-41)
This invention relates to printing apparatus and more
particularly to apparatus for placing indicia on small
FIG. 2 is a side elevational view of fthe printing ap
paratus of FIG. l;
FIG. 3 is a Side elevational view of the printing ap
of FIG. l, similar to FIG. 2, showing certain of
In the printing of small articles, such as electrical com
the elements in a second position;
ponents (resistors and capacitors, for example) and simi
FIG. 4 is a sectional view along the line 4~-4 of FIG. 2
lar items, it is imperative that the marking placed on the
the inking plate, a portion of the drive mecha
article during the printing operation be sharply delineated
nism, and certain other elements of the apparatus;
so that it properly serves the intended function. These
FIG. 5 is a sectional view along the line S-S of FIG. 2
articles are frequently irregular in shape and often have
showing the main drive linkage of the apparatus of FIG. l;
wire leads or similar parts `associated therewith which
FIG. 6 is a view of the printer actuating mechanism
makes the continuous end-to-end feeding thereof difiicult
if not impossible. Additionally, due to the irregular sur 20 of the app-aratus, this view being of the opposite side of
the machine from that of the views in FIGS. 2 and 3;
face of such articles, direct printing from type often results
articles in a rapid, eiiicient and accurate manner.
FIGS. 7-10 are diagrammatic views of the mechanism
Accordingly an object of this invention is to provide
associated with the printing apparatus for transferring
an improved apparatus for placing indicia on irregularly
25 ink from the type to the offset head.
shaped articles such as electrical components.
With reference to FIGS. l and 2 the printing apparatus
Another object of this invention is to provide an im
in an incomplete or distorted marking.
proved printing apparatus capable of accurately printing
electrical components such as resistors and capacitors,
capsules and similar small articles in a rapid and eñicient
there shown has a base lll which is adapted to be sup
ported by leveling screws 12, 14, 16 on a suitable surface.
Mounted yon the base is a bracket 18 which supports a
30 drive sha-ft 2@ to which is attached an eccentric crank 22.
This crank 22 is secured to a pitman arm 24 by means of
In the apparatus of the invention the article to be im
a bolt 26. The pitman arm 24 is attached tot a cross head
printed is positioned by suitable means beneath a printing
>2S which is securely fastened to the square shaft 39. This
lhead element in a stationary location during the printing
square shaft is supported for reciprocating movement in
operation and the printing head carrying ink or other
members 32, 34.
printing medium disposed in the desired form contacts 35 guide
Mounted on the forward end of the square shaft is the
the article to transfer the printing medium to the article
type head or printing die 36 which carries the printing
surface in the printing operation. It is essential that there
type. An inking plate 38 is mounted above the printing
be no lateral motion of the printing head relative to the
article during the printing operation and, similarly, no
die 36. An extension 40 secured to the rear end of the
»lateral motion to the printing head relative to the printing 40 shaft extends laterally and has a link member 4Z, pivotally
die which carries the indicia and to which the printing
medium is being applied so that a sharp impression that is
secured thereto by pin `44, which supports the round
shaft 46. This round shaft has at its forward end a cou
pling y4S which is secured to the inking mechanism ac
tuating link Sil by means of a bolt 52, also shown in FIG.
not smeared, blurred or otherwise detiective is transferred
to the article.
Accordingly, another object of the invention is to pro 45 5. The link '56 is pívotally mounted on the upstanding
flange 54 which is secured to the base 'lll and is formed
vide a compact, rapid and eiiicient printing apparatus for
dog-leg shape. At the knee of the link Sti is a pivot pin
the placing of indicia on small articles in which the print
56 t-o which is secured a pair of arms 58 which `supports
ing head is operated in a manner to avoid possibility o-f
an inking roll 66. These arms and the roller are biased
lateral motion during printing medium transfer operations.
In accordance with the invention there is provided ap- " downwardly by the springs 62. At the outer end of the
link 59 is another pivot pin 64 which is adapted to slide
paratus including an offset printing head or other suitable
:in slot 66 of the ink reservoir ratchet drive member 68.
transfer element which carries a printing medium from a
A screw 7i) and nut 72 are provided to adjust the amount
printing die or other suitable indicia carrying element to
of travel of pin 64 in slot 66.
_the article to be imprinted and places the printing medium
A transfer roll 74 is :supported in a pair of arms 76
on that article in a printing operation. The apparatus is 55
pivotally attach to the upstanding support mem
arranged to provide an initial, straightline relative move
bers ‘78 by means of the bolt and nut assembly S0. A11
ment between the offset head and printing die; and the
ink reservoir 82 is also mounted on the support members
offset head, after it is separated from the printing die, is
78 and has a cooperating reservoir roll 84 which is driven
rotated into the proper and stationary position for the
printing operation. The printing operation is then per 60 by the notched arm 86 and a toothed ratchet member 88
Kfor transfer of ink from the reservoir via roll 84 to the
formed, again with a substantially straight line movement,
roll 74. A spring 96, connected between a pin 92 on
so that‘through the two printing medium transfer opera
one of the support members 78 and pin 94 on link 68, acts
tions a sharply defined indicia is placed on the article.
to pull the linkage of arms 76, 63 and S6 yforward as far
In the preferred embodiment of the invention the printing
apparatus includes a single drive unit which controls (l) 65 as possible as limited by the position of link 50 and the
pin 64 that it carries relative to the slot 66 and the ad
the coordinated operations of transferring ink from a
justing ybolt 70 therein. The several rolls, ink reservoir
reservoir to a printing die via an inking plate so that a
and inking plate are also shown in FIG. 4.
smooth layer of ink of uniform thickness is placed on the
Forwardly of the ink reservoir support members 78
die, and (2) the motion of the offset head between the
immediately in front of and below the surface 96 of
printing die and the article to be imprinted. The ap
the ink tran-sfer plate 38 are positioned a pair of quadrant
paratus of
surfaces 98 which act as guides for the support arms '58
designed with a common drive element, that is capable
of roll 60.
Clamping means 100, associated with the
printing die, permits easy removal and changing of the
type as desired.
Also secured to coupling means 48 at.the forward end
of shaft 46 is a friction drive block 102 which has a base
portion `104 anda cap portion 106. The cap portion is
secured to the base portion by means of screws 108, 110,
each of which has a spring 112 positioned between the
the ydrive block 102 it is permitted to slide through that
block so that it `does not impede additional desired opera
tion of the printing apparatus.
The apparatus is in the position shown in FIG. 6 at this
time with the square bar 30 and the structure mounted
thereon being moved rearwardly. A portion of this
structure is the cross head 28 and the arm 146 on which
is mounted the pivoted cam follower finger 144. This
head of the screw and the cap 106. A rod 114 is adapted
finger is forward of the roller 142 in its foremost posl
to be received between the base 104 and cap,1(}6 and to 10 tion and as it moves rearwardly it contacts the roller
be driven thereby. (A view of the structure also appears
142 and as it is fixed in posi-tion against the stop 150
in FIG. 4.) Mountedon the rod are two stop members
it forces the roller 142 up pivoting the printing yoke
116, y1‘18 -adjustably secured thereto by means of set
about the pivot points 134, 136 and causing the offset
screws 120. This drive rod 114 has its forward end bent
head to lower to transfer the ink carried on its face _to
outwardly at a right angle and is connected to link 122 15 the article 160 in a printing operation. As soon as the
which is secured to a shaft 124 on which the offset print
finger 144 passes the roller 142 the spring 140 acts to
ing head 126 is mounted. This shaft and offset head as
pivot the yoke upwardly and lifts the offset head in a com
sembly are supported by a yoke 128 through which the
pletion of theprinting operation.. The cam follower is
Yshaft 124 passes and is secured in the yoke by means of
Ypositioned such that the offset head has rotated to its
a suitable cap 130. A biasing spring 132 is .provided to 20 vertical position and becomes stationary before the fol
assist proper positioning of the offset head '126. A lug
lower contacts roller 142. In other words, on the com‘
148 positioned on the yoke cooperates with stop »mem
Vmencement of the rearward movement of the crosshead
bers 116, 118.
28 (but after the short lost motion delay) the oñî'set head
The offset head yoke 128 is'pivotally mounted on the
is rapidly rotated downward to the vertical position and
printing unit support members 78 by bolts 134, 136. A 25 subsequently, after it had Ibeen properly positioned (asV
yoke arm -138 extends rearwardly of the pivot point and
determined by the location of stop 116), the finger 144
is biased ydownwardly ‘by a spring 140 that is secured be
contacts roller 142 to perform the printing operation. In
tween the end of that arm and the base 10, as best seen
this manner the offset head is not being rotated at that time
in FIG. 6. Also positioned adjacent the rear end of the
and a perfect printed impression results.
. yoke arm. 138 is a roller '142. This roller 142 cooperates 30
with a cam follower in the form of a pivoted finger 144
which is mounted on an arm 146 that is secured to and
extends forwardly from the cross head 28. This cam
At the same time the link 50 is being pivoted in a coun
terclockwise direction by the rotation of the crank 22.
This pivoting movement starts the inking roll 60 down
wardly across the inking plate as the plate is being brought
follower finger 144 is normally biased against stop 150
rearwardly by the main drive rod 30. The roll 60 is
by a spring 152 which is connected between the finger 144 35 maintained in contact with the plate as mentioned above
fand the arm 146.
by the biasing springs 6-2. As the link 50 continues to
It is 4believed that the functioning of this machine may
Yrotate in a counterclockwise direction the links 68, 76, 86
be .best understood by a step by step description of the
move forward under the influence of spring 90 withlinks
operation thereof. In FIG. 2 apparatus is shown with
76 and 86 pivoting about the fixed point 80. This forces
Ythe offset head 126 disposed in horizontal position against
the link 86 forwardly in a cocking operation preparatory
the type 1'54 mounted in the printing die 36 (as indicated
to its engagement Ewith the tooth wheel 86 to drive the
in FIG. 7). The transfer roll 74 is in contact with the
reservoir roll 84. At ‘the same time the link 76 carrying
reservoir roll 84 and the inking roll l60 is at the upper end
roll 74 is pivoted downwardly toward the surface of plate
of the .surface 96 of plate 38. As the crank 22 lrotates
96. As mentioned above during this interval of 180°
`in a clockwise direction as shown in FIG. 2 the pitman
rotation of crank i22 the plate and type head move to
arm starts to move rearwardly, drawing the crosshead 28
their Irearmost positions. As the plate 38 moves rear
and shaft 30 with it. This causes the printing die 36 and
wardly it is rotated by contact of its notched disc 162
type 154 to move away vfrom the offset head 126, from the
with the arm 164 that is mounted on the upstanding ñange
position shown in FIG. 7 to the position shown in FIG. 8.
54. ’I'he position of these elements after the eccentric
Sectional views of the connection between a portion of 504 22 has rotated 180° is shown in FIG. I3. It Will be noted
the offset head rotating linkage .including round shaft 46,
that the transfer roll 74 is in contact 'with the forward
link 42 and pin «44, illustrating the two positions thereof,
end of the plate surface 96 and therinking roll 60 has
are shown in FIGS. 9 and 10. As will be seen from those
been driven down across the .plate surface 96 and along
the quadrant guides 98 across the type face in an opera
:figures there is an elongated slot I156 in the link member
42 in which the pin 44 slides. This arrangement provides 55 tion which transfers ink from the plate surface 96 to the
face of the type 154. The advancing lever 86 is in con
a lost motion connection so that no force is imparted to
tact with a notch on the reservoir roll 88l preparatory forY
the offset hea-d rotating mechanism until the type 154 has
an advancing action for feeding ink from the reservoir.
been withdrawn fromA the resilient printing surface 158
The pin 64 has moved through the slot 66 after roll 74
carried by the offset head 126. In this way there is no
contacted the plate 32. The notched plate ring has en
smearing or blurring of the ink that has been deposited
gaged the arm 164 and rotated the plate through a few
on the surface 158 by the type 154 as those two members
degrees. Finally, the shaft 114 is slid lthrough the'fric
tion block assembly 102 a distance as determined by the
156 the rod 114 is pulled rearwardly by shaft 46 through
the friction clamp connection 102. The link 122 rotates 65 movement of the link 50 and the position Yof stops 116,
the offset head through shaft 126 from the horizontal
At this time the offset head 126 is in perpendicular posi
position (with the stop 1|18 against the lug 148 (FIG. 2))
tion over the article 160.
to the vertical position (Where the stop 116 contacts lug
As the crank 22 continues to rotate the crosshead 28 Y
148 >(FIG. 3)). In the latter position the offset head has
move apart. As soon as pin 44 contacts the end of slot
been rotated 90° to a position exactly above the article 70 starts to move forward again and the offset head 126
(after the lost motion delay introduced -by the movement
j160 to be- imprinted. (It will be understood of course
of pin 44 in the -slot 156) is immediately rotated by shaft
that the article may bermoved into proper .position by
114 90° in a counterclockwise direction to a horizontal
any suitable means, for example, by a conveyor belt).
preparatory to contact with the printing die 36.
The rod 114 is prevented from moving further after stop
time »the crosshead 28 and shaft 30 move
116 contacts lug 148 but due to the friction connection of 75
forward, carrying the printing die 36 and the plate 38».
As the cross head 2S moves forward the follower 14A»l
(shown in FIG. 6) on the offset head actuating mecha
nism slides past the roll 142 without moving the offset
head yoke as the follower is permitted to pivot by spring
152. The springs 140 and 152 are proportioned so as t0
Y 4. -The‘apparatus as claimed in >claim l wherein said
offset head is supported on a yoke mounted for pivoting
movement, and said yoke includes an arm portion carry
ing a cam surface and said third means includes a cam
follower adapted to engage said cam surface for pivoting
said yoke to transfer printing medium from said offset
prevent any downward movement of the yoke 128 at
to the article to be printed.
this time.
‘5. Apparatus for printing indicia on small irregularly
As this structure is moving forward the link 50 is being
shaped articles comprising an ink reservoir, a printing die
pivoted in a clockwise direction to withdraw the inking
roll along the quadrant guides 98 and across the plate 10 having an indicia conñguration thereon, reciprocable drive
means to move said printing die during the transfer of ink
surface so that it finally is positioned at the upper end
from said reservoir to said die, an offset head adapted to
of the plate surface 96 in the position shown in FIG. 2.
receive an ink impression from said printing die when said
The clockwise rotation of link 50' also moves the pin 64
offset head is in a first position, means connected to said
through the elongated slot 66 but otherwise does not effect
the position of link 68 or its attached members 76, 87, 15 reciprocable drive means to rotate said offset head 90°
to a second position in alignment with the surface of the
due to the forward biasing eñect of spring 90, until the
article to be imprinted, and means to move said offset
end of the slot, as controlled by the position of bolt 70,
head toward the article to transfer an ink configuration
is reached. When the pin 64 contacts the end of bolt
to the article in a printing operation, said reciprocable
70, the attached links are moved against the force of
spring 90 to pivot the transfer roll 74 upwardly about 20 drive means being means arranged to withdraw said print
ing die from contact with said offset head prior to opera
the pivot point 80 and to pull the latch member 86 rear
tion of said offset head rotating means.
wardly, advancing the roll 84 to make a desired quantity
6. The apparatus as claimed in claim 5 and further
of ink available from the ink reservoir 82 for transfer via
a common mechanical drive source for Idriving
roll 74 to the plate surface in the neXt operation.
Thus it will be seen that the invention provides a com 25 said offset head rotating means and said die reciprocating
means and wherein said rotating means includes a lost
pact and eñicient apparatus which includes coordinated
motion connection, comprising a link having an elongated
means driven by a single mechanical element for trans
ferring a printing medium from a reservoir via an ink
ing plate to a printing die and an offset head mounted for
slot therein and a pin driven by said common mechanical
drive source disposed in said slot such that rotation of
rotation which picks up printing medium from the print 30 the offset head is delayed until the printing die is out of
contact with the offset head.
ing die in sharply delineated form, rotates through 90°
7. The apparatus as claimed in claim 5 and further
and then is actuated to place the printing medium on the
including a yoke apparatus for pivotally supporting said
articles, irregularly shaped or otherwise, to be imprinted
offset head, a cam surface on said yoke and wherein said
in a printing operation. While a preferred embodiment
of the invention has been shown and described, changes 35 common drive means includes a main crosshead and a
ca-m follower finger adapted to cooperate with said cam
therein will be obvious to those skilled in the art and there
surface for pivoting said yoke to carry said offset head
fore it will be understood that the invention is not in
toward said article in a printing operation, said finger
tended to be limited thereto or to details thereof and
being positioned to contact said cam surface and pivot
departures may be made therefrom within the spirit and
40 said yoke when said offset head rotating means is sta
scope of the invention as defined in the claims.
tionary with said head in said second position in align
I claim:
ment with the article to be printed immediately prepara
l. Apparatus for printing indicia on small, irregularly
shaped articles comprising a printing medium reservoir,
a printing die having an indicia configuration, an offset
tory to the printing operation.
8. Apparatus for printing indicia on small articles com
printing head mounted adjacent said printing die, means 45 prising an ink reservoir, an indicia carrying head, a trans
fer head, means to transfer ink from said reservoir to said
to transfer printing «medium from said reservoir to said
indicia carrying head, and drive means including first
printing die in a smooth layer, and drive means including
means to rotate said transfer head between a first .posi
first means to rotate said offset head between a ñrst posi
tion adjacent said indicia carrying head and a second posi
tion in alignment with said printing die and a second po
sition in alignment with the article to be imprinted, sec 50 tion adjacent the article to be printed, second means to
move said transfer head and said indicia carrying head
ond means operative when said offset head is in said ñrst
relative to one another to transfer a configuration of ink
position to move said printing die in straight line motion
from said indicia carrying head to said transfer head when
toward said offset head to transfer printing medium from
said transfer head is in said ñrst position, and third means
said printing die to said offset head and third means to
move said offset head towards the article when said offset 55 to move said transfer head to contact the article in a
printing action when said transfer head is in said second
head is in said second position for application of the print
position, said first, second and third means being mechani
ing medium carried by said offset head to the article to
cally operated by a single drive unit, said first means in
cluding an arm on said transfer head, a drive rod con
2. The apparatus as claimed in claim 1 wherein said
first means includes a drive rod having a pair of adjust 60 nected to said arm, a pair of adjustable stops mounted ou
said drive rod to control the movement of said drive rod,
able stops mounted thereon and a friction block coupling
and a friction block clamping means associated with said
means associated with said drive rod arranged to be recip
drive rod arranged to be reciprocated by said drive unit,
rocated by said drive means biased so that said drive rod
said clamping means being biased so that said drive rod
is permitted to slide relative to said friction block cou
pling means when said stop members inhibit motion »of 65 is permitted to slide relative to said friction block when
said stop members inhibit motion of said drive rod, so
said drive rod.
that said second and third means may be operated by
3. The apparatus as claimed in claim 2, wherein said
said- drive means at times when said first means is inop
drive rod includes a lost motion connection and is ar
be printed.
ranged so that after said offset head is positioned in align
9. Apparatus for printing indicia on small articles com
ment with said printing die by said first means, said print 70
a type head adapted to be reciprocated, a rotat
ing die is moved forward to Contact said offset head in a
able transfer head pivotally mounted on a yoke, said
printing medium transfer operation and then is moved
transfer head having a surface adapted to be positioned
away from said oifset head by said second means prior
to actuation of said first means to rotate said offset head
to said second position.
to receive an ink impression from said type head in a
75 ñrst position and to be rotated 90° to a second position
with said surface adjacent the article to =be imprinted,
ink Ifrom said reservoir to said type head, means to ro
tate> said transfer head 90° between a first position in
common drive means for reciprocating said type head and
rotating. said transfer head, said common drive means
which said resilient surface is in valignment withss'aidtype
including means for .pivoting said yoke in a printing
head and -a second position in which said resilient> sur
operation when said transfer head is in said second posi 5 face is directly above the article to be printed, Vmeans to
tion, means to .render said transfer head rotating means
reciprocate said type head toward and away from the
inoperative when said pivoting means is operative, and
first position of said transfer head to transfer an ink
means to hold said transfer head immobile against rota
configuration from said typeA head to the resilient surface
tion as said type head is being reciprocated into and out
of said transfer head when said transfer head is in said
of immediate contact with said transfer head.
10 first position, means to pivot said yoke to move said
10. Apparatus for printing indicia Von small articles
transfer head toward an a-rticle to tbe imprinted so that
comprising a type head adapted to -be reciprocated, a
said resilient surface contacts the article when said trans
rotatably mounted transfer head having a surface adapted
for head is in said second position, common drive means-„x
to -be positioned to -receive an ink impression from said
for operating said rotating means, said reciprfîcating>
type head in a first position and to :be rotated 90° to a 15 means and said pivoting means, including a .main recipro
second position with said surface adjacent the article to
be imprinted, common drive means for reciprocating
said type head and rotating said transfer head, said com
mon drive means including >an arm connected to said
transfer head, an operating rod mechanismconnected to
said arm eccentrically of the axis of rotation of said
transfer head and means to hold said transfer head im
cating element and friction drive means for operating said
transfer head rotating means adapted to enable the ím
rnobilization of said transfer head When said transfer
head is in its first position and when said transfer head
is in its second position while not inhibiting continued
‘operation’ either of said reciprocating means or said
pivoting means, said friction drive means including ad
mobile against rotation as said type head is being recipro
justable stop means for controlling the position of said
cated into and out of contact with said transfer head in
transfer‘head, and a lostV motion connection operative
cluding a lost motion link in said operating rod'mecha 25 when said transfer head is in said first position for pre
nism, said lost motion link including an elongated slot,
venting movement of said transfer head immediately be~
a driving member carried in said slot and driven by said
fore and after transfer of an ink configuration to said
Y common -drive means, said rotation immobilizing means
transfer head from said type head.
being arranged so that the transfer head rotating means
is effectively disconnected from the common drive means
References Cited in the file of this patent
when said'type head is in a position immediately adja
v cent said transfer head.
1-1. Apparatus for printing indicia on small articles
comprising an ink reservoir, -a type head, a transfer head
having a resilient surface adapted to receive a conñgura 35
tion of ink from said type Ihead and transfer that ink
configuration to an article ina printing operation, said
transfer head being mounted Ion a yoke, means to transfer
1,639,789 Y
Walters _____________ _- Aug. 23, 1927
O’Hara ____________ __ Dec. 25,v 1928
Gould et al. ________ __ July 28, 1936
Germany ___________ __ May 31,' 19-32
Без категории
Размер файла
882 Кб
Пожаловаться на содержимое документа