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Патент USA US2130235

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Sept. 13, 1938.
M. D. HEYMAN
2,130,235
FEEDING MECHANISM
Filed June 20, 1956
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FEEDING MECHANI SM
Filed June 20, 1936
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INVENTOR
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Sept. 13, 1938.
2,130,235
M. D. HEYMAN
FEEDING MECHANISM
Filed June 20, 1956
5 Sheets-Sheet 4
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116
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INVENTOR
MOSES 0. HE YMAN
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Sept. 13, 1938.
2,130,235‘
M. D. HEYMAN ‘
FEEDING MECHANISM
Filed June 20, 1936
5 Sheets-Sheet 5
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INVENTOR
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Patented Sept. 13, was
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2,130,235
UNITED STATES PATENT OFFICE
2.130.235
resume MECHANISM
Moses D. Heyman, Hewlett, N. Y., assignm- of
one-half to Irene K. Heyman, Hewlett, N. Y.
Application June 20, 1936, Serial No. 86,275
13 Claims. (CL 161-87)
This invention relates to mechanisms for feeding relatively small irregular shaped pieces of
stock to a punch press. While the mechanism
as herein disclosed contemplates the feeding of
5 mica, it is apparent that the invention may be
employed with other types of material where
The arrangement and proportion of the parts
may be varied to suit the application of the in
vention, and these drawings together with the
following detailed speci?cation should be treated
as exemplary only.
In the drawings:
di?lculty is encountered in safely feeding such
pieces to a press.
The long felt need of a device as herein con-
Figure 1 is a front elevatienal View Of a feed
ing mechanism constructed in accordance with
this invention.
10 templated will become readily apparent when it
is understood that mica which is mined in pieces
of varying sizes, only has a commercial market
in the larger sizes, since it is only these sizes that
Figure 2 1S a top Plan View thereof, Partly in 10
Section, Showing its application to a punch Press
Figure 3 is a plan sectional view as taken sub
stentlelly along the line 3—3 01’ Figure 1~
may be safely handled in punch presses. Howl5 ever, the smaller pieces of mica, though large
enough to form certain commercial parts, cannot
Figure 4 is a side elevational view as seen from
the left of Figure 1.
Figure 5 1S a Vertical sectional View as taken
at present be safely handled since the punch
press operator can only position said small pieces
on the die of the press by hand. This manual
20 feed has proven quite dangerous, causing a considerable loss to the manufacturer in working
time, insurance compensation, etc., and to the
operator in mutilated hands, as can be well
understood.
25
The present invention therefore seeks to provide a mechanism, either in form of an attachment to a punch press or as an integrally designed portion thereof, through the medium of
which an operator may safely and rapidly feed
along the line 5-5 0! Figure 2
Figure 6 is 11 Vertical Sectional View as taken
substantially along the line 5—6 of Figure 2
30 small, irregularly shaped pieces of mica to be
_
°
Figure 7 is an elevational view of one of the 20
pneumatic or vacuum controlled valves shown in
Figure 6.
~
Figure 8 1s a fragmentary vertical sectional
view showing the means for removing scrap
material from the Vicinity 0f the die25
Figures 9 and 10 are respectively enlarged de
tailed sectional views of the transfer and remov
a1 arm Suction heads
Figure 11 1S a Semi-diagrammatic View Of a
punch press equipped with 8- feedillg meehanism 30
operated on by the press.
as contemplated in this invention.
The invention also contemplates the provision
of means, controlled by the feeding mechanism,
In greater detail, the punch press platen A
which supports the die B is usually formed with
for tripping the press in synchronous relation
35 with the movements of the feeding mechanism
a front face C‘. In the present instance this face
is utilized for the securing of a bed or frame i5 35
parts.
in ?xed relation to the punch press and hence
Another contemplated feature resides in the - t0 the die. the bed being Provided with e Verti
employment of vacuum means for effecting the eel ?ange l6 cooperating With the platen face C
transfer of the mica pieces to the press.
for this purpose
40
More speci?cally the invention contemplates a
secured to the frame l5 are means Such as a 40
device wherein the operator may place a piece plurality of tube 01‘ rod Separators '7 to which
of mice. or the like upon a replica or close simuare secured a sub-base i8. In order to insure
lation of the part produced by the press at a rigidity to the above described assembly of base
point considerably remote from the punch and
45 die thereof, means for transferring said piece of
mica to be acted upon by the punch and die, and
means for removing the ?nished mica part from
the die and for disposing of the resultant scrap
or fragment of mica to leave said die clear for the
50 reception of an oncoming mica piece.
The accompanying drawings, which, though
and sub-base, adjustable supports in the form of
jacks such as shown at 19 may be interposed be- 45
tween the bottom of the sub-base and the floor
upon which the press is supported. These jacks
may also serve to afford accurate vertical posi
tioning of the mentioned base assembly which,
when thus positioned is ?xedly bolted to the press 50
platen.
considerably detailed and illustrating a feeding
Upon the base I5 and supported in journals 29,
‘mechanism as at present contemplated, are intended only as an example of a preferred man-
there is carried a cam shaft 2| upon which is
mounted the loose drive pulley 22 having a clutch
55 ner of accomplishing the purposes of invention,
member 23. Upon an extension 24 of the cam 56
2
shaft that is slidably keyed as at 25 a ‘cams mediate point 85 of the removal arm 53. A third
member 26, having engagement with the clutch arm 81- is also provided on the sleeve 58, and to
member 23, and provided with a spool 21. - In the‘ this arm’ there is pivoted a pilot rod 53 upon which
groove of the spool are arranged pins 28 carried on is strung a coil spring 83 positioned between a
a fork 23, preferably pivoted as at 30 to a bracket shoulder 13 on the pilot rod and a ?xed abutment
’
'
mounted upon the ?oor. A spring 8| serves to_ 1|.
From the foregoing it can be seen that the cam I
maintain the clutch members in disengaged rela-.
tion and they are maintained in engaged relation
by the depressing of a foot pedal 32 which,
10 through a connection such as the cable 33, is de
signed to force the clutch fork 23 to urge the
clutch member 26 against the spring 3| to engage
the clutch member 23.
The pulley 22 may be driven from an overhead
15 shaft and the ?ywheel D of the punch press is
similarly driven. However it may be arranged to
provide a belt 34 between the pulley 22 and ?y~
wheel D so that the feeding mechanism is driven
from the press.
20
Above the bed or frame |5 there is mounted a
rotatable table 35, this table being mounted upon
a spacer 35 to which is also amxed a ratchet wheel
31. The table and spacer are preferably affixed to
each other as by means of bolts 38 and together
25 are arranged to rotate about a ?xed hollow sleeve
33 carried by the bed. The table is arranged to be
intermittently rotated by means of a cam 43 on
the cam shaft 2|. Upon each revolution of said
cam shaft, a roller 42 on a slide 43 is engaged by
30 said cam. ‘The slide also carries a spring ten
sioned dog 44 having engagement with the teeth
of the ratchet wheel 31. Spring means such as
shown at 45 serves to retain the roller 42 against
the contour of the cam 40.
35
The table 35 is provided, adjacent its peripheral
edge, with a plurality of stock receiving stations
46, and it is desired in the present instance to
form these stations as replicas or close simula
tions of the ultimate part produced in the die of
40 the punch press. These may either be painted on
the table or applied to the surface thereof in any
suitable manner.
As illustrated, the number of stations is com
mensurate with the number of teeth on the
45 ratchet wheel and hence each reciprocation of the
slide 44 will cause an advancement of the table a
distance equivalent to a spacing between two sta
tions.
'
A transfer arm 4‘! is mounted for oscillation
50 upon the bed I5 and is oscillated about its center
by the following mechanism driven by a crank 48
on the cam shaft 2|.
The crank 48 is connected by means of a link 43
to a reciprocatory slide 53, said slide being pro
vided with a cam 5| which engages a cam roll upon
an arm 52 ?xed on a sleeve 53-forming the vertical
portion of the transfer arm 41. To insure contact
of the cam follower against the cam 5| at all
times, another arm 54 on the sleeve 53 is connect
ed to a pilot rod 55 upon which is positioned a coil
spring 56 located between an abutment 51 upon
said pilot rod and a ?xedabutment 58. Hence,
the cam 5| serves to move the arm 4‘!v against the
spring in one direction and the spring 51 serves
to move the arm as controlled‘by the cam in the
other direction.
The removal arm 53 which is carried on a sleeve
53 within the sleeve 33 is also mounted for oscilla
tion as by the following mechanism. The slide
50 is provided with another cam 5| which is en
gaged by a cam follower on the end of an arm 82
?xed on a vertically mounted sleeve 83. This
sleeve is also formed with an arm 64 substantially
parallel to the arm 52 and a link connection 55 is
75 made between the end of the arm 54 and an inter
8| serves to move the removal arm 53 against the
spring in one direction, and the spring serves to
urge the removal arm 53 as controlled by the cam
in the other direction.
,
10'
_
The arm 41 is also arranged, in addition to its
oscillatory movement, for vertical movement.
This is accomplished through the medium of a
cam 12 carried by the slide 53 engaging a roller on 15
one arm 13 of a bell crank lever pivoted at ‘I4, the
other arm of said lever being forked asat ‘I5 and
provided with inwardly inreaching pins 15 for
engagement with a spool 11, said spool .being
mounted for vertical movement upon a vertical 20
sleeve 18. Upon this sleeve is also mounted the
transfer arm sleeve 53. The upper end of the
?xed sleeve 18 is provided with an abutment ‘l3,
and between said abutment and the sleeve 53
there is arranged a coil spring 80. Hence, it will 25
be seen that the arm 41 is not only arranged for
oscillation around the ?xed sleeve 18 but may be
moved vertically in both directions as controlled
by the cam 12 and the spring 80.
The removal arm 53 is also mounted for verti
cal reciprocation. The cam 8| on the cam shaft
2| is arranged to engage a roll 82 on a push rod
83 mounted for vertical but non-rotational move
ment in the bed I5. ‘This push rod is provided
with a lower end 84 adapted for engagement by 35
an adjustable screw 85 on one end 88 of a bell
crank lever pivoted at 81 and forked as at 88, said
forked end being provided with inreaching pins
83 engageable in a spool 33 carried on the end of
the vertically movable sleeve 50. Between said 40
spool 30 and abutment 3| there is arranged a coil
spring 32. It is apparent from the above that the
cam 8| serves to raise the sleeve 80, and hence
the removal arm 53 against the spring 32, said
spring serves to lower said arm under the control 45
of said cam.
It should be understood that the movements
of the two arms 41 and 53 are arranged in a cer
tain preferred synchronous relation which is sub
stantially as follows.
50
Starting with the arm 41 in the position shown
in Figure 2, said arm first moves down to con
tact a piece of stock at that station to lift said
stock in a manner later to be described; it is then
moved upwardly with said stock and is rocked so 55
said stock is centered upon the die B. When in
this position it is again moved downwardly to de
posit the stock upon the die and then moved up
wardly and swung back to its initial position.
During the latter part of the motion of the arm 60
41, the arm 53 which has removed a ?nished piece
of work from the die, starts from its position
shown in Figure 2 to swing towards the die and
then down to pick up a ?nished piece of work.
It then moves up and across to the right where 65
the work which it carries is dropped. During the
period when both of said arms are remote from
the die, that is when the arm 41 is moving to
wards the table and the arm 53 is starting to
wards the die, the punch press is arranged to 70
operate upon the piece deposited by the arm 41
and the punch of said die is arranged to return
to its elevated condition before the removal arm
53 arrives to remove the ?nished work. It will be
noted therefore that it is desired to have the cam 75
..... a “AMA
3
2,180,985
shaft which controlsv the movements of the arms
47 and 59, also controls the punch press which
is of the one revolution type. For this purpose a
cam 93 is provided on the cam shaft 2!, said cam
having a lug arranged, upon each revolution of
the cam shaft, to depress a lever 96 pivoted at 85
to the punch press and connected to the press
clutch release rod 93. Upon said release, in the
usual manner the press will perform its single
10 cycle of operation, that is, a depression and ele
vation of the punch member.
The foregoing is descriptive of the mechanical
features of the mechanism, and it is apparent
therefrom that considerable changes in design
may be effected without departing from the prin
ciples of the invention as contemplated.
In the present instance it is preferred to employ
been applied through the connection IN to‘ the
chamber I05 will now be applied to said passages
and to all the connections previously mentioned
so that a work-piece which is in contact with the
?tting II ‘I will be held thereagainst bythe lack
of pressure in the mentioned passages and con
nections, and by the atmospheric pressure which
is normally exerted on the outer face of said work
piece.
Thus it can be seen that under the control of
the cam H8, suction is applied to the ?tting
II‘! when the removal arm is moved down over
vacuum means for the purpose of effecting the
the die to pick up a ?nished work piece there
from, and the design of the cam H8 is such that
the suction will be maintained until said arm
has swung to the position shown in the broken
lines of Figure 2 where the suction is broken to
permit the piece to fall away from said ?tting.
transfer of the stock to the die and the ?nished
work from the die to a point of disposal.
If it is found, however, that said piece might be
inclined to stick, simple means may be utilized 29
While outside means for providing vacuum or
suction might be employed, it is preferred, in the
present instance, to provide a vacuum pump 91
driven by an electric motor 98, both said pump
and said motor being preferably supported upon
and carried by the sub-base I3. The suction pro
vided by the pump 97 is preferably applied
through a ?lter chamber 93 connected to said
pump as at I00. A connection IIII is made from
30 said filter chamber to the upper part of a vacuum
control valve body I02 and a similar connection
I03 is made to another vacuum control valve
' body ms.
Both of these valve bodies are substantially
35 similar in construction and therefore a descrip
tion of one would suit the other. The suction on
the line IOI is therefore applied in the chamber
‘for either jogging said arm or for brushing the
piece therefrom.
_
In the manner above described, suction may
also be applied to the head I24 of the transfer
arm 47 but in this instance the suction is applied
through the connection I03 and is controlled by
the valve mechanism I04 through the medium
of the cam I25 on the cam shaft'ZI.
To insure that the die is free of all the scrap
or waste pieces resulting from the punching
operation after the removal of the punching, it
is desired to provide means for removing said
pieces and a preferred manner of accomplishing
this is shown in Figures 2 and 8. The cam shaft
2| is provided with a cam I26 which rocks a lever 35
I2? pivoted at I28 to a valve body I29 fastened
to the wall It of the bed I5. The lever I2'I is
I05 of the valve body I02, and hence upon the up
provided with an adjustable screw I20 engageable
per face I 06 of a piston valve I 01 held by said suc . against a. valve stem I3I carrying a valve I32
cooperating with a,valve seat I33 in the body I29. 40
40 tion and by a coil spring i08 against seat I09.
Further serving to retain said valve in its elevated A chamber I34 on one side of the valve I30 is
position against the seat I09, it is preferred to connected to a source of air pressure supplying
freely admit atmospheric pressure to the inner
hollow portion of said valve as through the pas
sage ! Ill.
The valve I0? is provided with a series of cir
cumferentially arranged ports III which, when
the valve is in elevated position, communicate the
mentioned atmospheric pressure through the pas
50 sages I I2 to a piping connection I I3 which is con
nected to the hollow of the vertical sleeve 60
upon which is carried the removal arm 59. A
connection II 0 is made between said sleeve 60
and the chamber H5 in the suction head N6 of
said removal arm.
-
To said head may be applied a ?tting i I‘! de
signed to suit the shape and size of the work-piece
to be handled.
It is apparent from the above that with the
(30 valve I01 in the elevated position, atmospheric
pressure will enter through the port or passage
M0 to ?ll the passages H2, connection II 3, sleeve
60, connection. I M, and ?tting Hi. In order to
apply suction through the mentioned passages
- and connections, the valve I01 is depressed
through the medium of a cam H8 on the cam
shaft 2|, said cam acting upon a roller II 9 on a
pivoted arm I20 bracketed as at IN to the
vacuum control valve body I02. The arm 20
engages a valve stem I22 which, passing through
a stuffing box I23, engages the top of the valve
IOI to depress it as shown in the dotted lines
of Figure '7. The ports III will be cut off from
the passages II2 to seal said passages against
atmospheric pressure and the suction which has
air to said chamber through conduit I35. At the
other side of the valve I3I there is arranged an
other chamber I36 to which is connected a ?tting
I31 having an elongated nozzle portion I38 which
is directed towards and across the top face of
the die. A coil spring I39 is arranged in the
chamber I34 for maintaining the valve I3I upon
its seat.
50
In'operation and in synchronization with the
movement of the removal arm, the cam I26 acts
to unseat the valve I3I and thereby permits the
pressure in the conduit I35 to be manifested in
the form of a. jet of air emanating from the
nozzle I38. This will blow the fragments of
material'clear of the die so it is again ready to
receive a new piece of stock.
. In résumé, the operator standing in front of
the feeding mechanism with his foot upon the
pedal 32 places pieces of stock upon the replicas
‘at -the stations 46. If he ?nds that the stock
piece is too small to cover the replicas he dis-_
cards that piece and supplies another in its
place. So long as he continues to depress the
pedal 32 the cam shaft will operate to perform
its various functions and the feeding mechanism
and press will operate to produce the desired re
sults. Upon removal of his foot from the pedal
32 both the press and feeding mechanism will be
rendered inoperative, since the declutching be
tween the clutch members 23 and 26 will stop the
feeding mechanism and therefore the cam shaft.
The punch press will then be rendered inopera
tive since its trip mechanism is no longer acted 75
4
on by the cam 93.
From the foregoing it may
be seen that a foolproof, safe, and highly effi
cient device has been disclosed in its preferred
form of embodiment, and that many changes
and innovations may be incorporated in the
design without departing from the principles of
the invention as hereinafter claimed. As an
example of a change or addition which can be
made, suction may be applied at each stock
This is illustrated in Figure
5 wherein the transfer table 35 is provided with
a chamber I40 and apertures I4I connecting said
chamber with the surface of said table, and the
replicas of the parts to be formed are also aper
10 receiving station 46.
tured as at I42 to permit a low vacuum suction
to be applied to the stock placed upon said
replicas. This is accomplished through the
medium of conduits I42 connected to a chamber
I43 to which said low vacuum is applied as
through a conduit I44. Another addition which
may be incorporated is a brake or drag on the
table 35 to insure that it does not over-run its
feed.
Thus it can be seen that although the present
to said press, and means for removing said stock
from said press, said transferring means and
said removing means each comprising a mem
ber adapted to oscillate in a substantially hori
zontal plane and to reciprocate in a substantially 10
vertical plane.
6. In combination, a press having a ?xed die,
a support for receiving pieces of stock to be fed
to said die, means for intermittently rotating
said support, said support being provided with 15
stock receiving stations whereby a piece of stock
placed upon a station remote from said die is
intermittently moved towards said die, and means
for transferring a piece of stock from one of the
stations nearer to said die to said die.
20
7. In a device of the character described in
combination, a stock support comprising a sub
stantially round member having uniformly spaced
de
?ne
in
e?i
stock receiving stations, a die position beyond
the periphery of said support, means for inter 25
mittently rotating said support whereby a piece
of stock placed at a station remote from the
die is intermittently carried towards said die,
and means for transferring said stock piece to
What I claim as new and desire to secure by
said die from one of the nearer stations.
30
8. In combination with a punch press, means
disclosure has been carefully planned and
signed, only experience will determine those
re?nements which are necessarily to be
corporated to provide a device of maximum
ciency.
30
5. In combinationwith a punch press, a mem
ber having a plurality of stations each being
adapted to support a piece of stock, means for
intermittently moving said member, means for
transferring a piece of stock from said member
Letters Patent, is:
-
1. In combination, a punch press, and means
for feeding stock to said press, said means in
cluding an intermittently moving member hav
ing a plurality of circumferentially arranged sta
> tlons, for receiving irregularly shaped pieces of
stock of greater contour than the contour of the
part to be formed therefrom a likeness of the
part formed from said stock by said press at
40 each of said stations for guiding'the manual posi
tioning of said stock on said member, and means
for transferring said stock from said member to
said press.
2. In combination, a punch press, means for
feeding stock to said press, and means for re
moving the part formed from said stock from
said press, said stock feeding means including
an intermittently moving member provided with
a plurality of stations, for receiving irregularly
shaped pieces of stock of greater contour than
the contour of the part to be formed therefrom
and a likeness of the mentioned formed part at
each station for guiding the positioning of said
stock thereon.
3. In combination with a punch and die, an in
termittently rotating member, uniformly spaced
stations on said member, for receiving irregu
larly shaped pieces of stock of greater contour
than the contour of the part to be formed there
60 from a likeness of the piece produced by said
punch and die at each station for guiding the
position of said stock thereon, means for trans
ferring said stock from said member to said die,
and means for removing a formed part from
'said
die.
65
4. In combination with a punch and die, an
for driving the press, a separately driven shaft,
a stock support, means on said shaft for inter
mittently moving said support, a. plurality of
stock receiving stations on said support, means
driven by said shaft for transferring said stock
from said stations successively to said press,
means also driven from said shaft for remov
ing parts formed in said press from said stock,
and means controlled from said shaft for cou
pling the driving means of the press to operate
said press synchronously with the movements -
of the support, the transferring means, and the
removing means.
9. In combination, a press having a punch and
die, a support for receiving pieces of stock to be 45
fed to said die, means for intermittently moving
said support, said support being provided with
stock receiving stations whereby a piece of stock
placed upon a station remote from said die is
intermittently moved towards said die, means for 50
transferring a piece of stock from one of the
stations nearer to said die to said die, and means
for removing from the press the part formed by
said punchin said die.
10. In combination, a press having a punch
and die, a support for receiving pieces of stock
to be fed to said die, means for intermittently
moving said support, said support being provided
with stock receiving stations whereby a piece of
stock placed upon a station remote from said die
is intermittently moved towards said die, means
for transferring a piece of stock from one of the
stations nearer to said die to said die, means for
intermittently moving member, uniformly spaced
removing from the press the part formed by said
punch in said die, and means for clearing said
die of the remainder of the stock from which said
stock receiving stations on said member, a like
part is formed.
ness of the piece produced by said punch and die
at each station for guiding the positioning of said
stock thereon, means for transferring said stock
11. In combination, a press having a punch
and die, a support for receiving pieces of stock
to be fed to said die, means for intermittently
from said member to said die, means for re
moving a formed piece from said die, and means
for clearing the die of fragments of stock from
moving said support, said support being provided
75 which said piece is formed.
40
with stock receiving stations whereby a piece of
stock placed upon a station remote from said die
is intermittently moved towards said die, means 75
5
2,180,235
for transferring a piece of stock from one of the
stations nearer to said die to said die, means for
removing from the press the part formed by said
punch in said die, and means for clearing the die
of the remainder of the stock from which said
part is formed, said last mentioned means com
prising a nozzle, means for supplying air under
pressure to said nozzle, and valve means syn
chronously operable with the transferring and
10 removing means for supplying a jet of air from
said nozzle to the vicinity of the die.
12. In combination, a press having a punch
and die, a support for receiving pieces of stock
to be fed to said die, means for intermittently
15
moving said support, said support being provided
with stock receiving stations whereby a piece of
stock placed upon a station remote from said die
is intermittently moved towards said die, and
means for transferring a piece of stock from one‘
of the stations nearer to said die to said die, said
means comprising an arm having a head adapted
to engage said stock, and means’ for applying
suction to said head during engagement thereof
with the stock.
13. In combination, a press having a punch
and die, a support for receiving pieces of stock
to be fed to said die, means for intermittently 5
moving said support, said support being provided
with stock receiving stations whereby a piece of
stock placed'upon a station remote from said die
is intermittently moved towards said die, means
for transferring a piece of stock from one of the 10
stations nearer to said die to said die, and means
for removing from the press the ‘part formed
by said punch in said die, said transferring means
and said removing means each comprising an
arm having a head, means for synchronously 15
moving said arms, and meansfor applying suc
tion to each head during the transferring and
removing movements of the respective arms, and
means for breaking said suction at the end of
said movements.
’
MOSES D. HEYMAN.
20
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