US1699569A - Transfer mechanism - Google Patents

Description

0. o. PETITJEAN TRANSFER MECHANISM Jan. 22, 1929.

Filed May 19. 1924 2 Sheets-Sheet Ulaford 0.1 6 g7 BY I @M eaw,

Jan. 22, 1929. 1,699,569

c. o. PETITJEAN TRANSFER MECHANISM Filed May 19. 1924 2 Sheets-Sheet 2 L I Ul zford aRiiZ 'ean,

Patented Jan. 22, 1929.

UNITED STATES PATENT OFFICE.

CLIFFORD O. PETITJEAN, OF WATERBURY,

CONNECTICUT, ASSIGNOR' TO THE WATER BURY FARREL FOUNDRY AND MACHINE COMPANY, OF WATERBURY, CONNECT- ICUT, A CORPORATION OF CONNECTICUT.

TRANSFER MECHANISM.

Application filed May 19,

This invention relates to mechanism used in connection with heading, upsetting machines, or the like, to transfer blanks from one part of the machine to another, as one of the sequence of operations thereon.

it is the object of this invention, among other things, to provide a device of this character without projecting arms or. similar parts which are apt to become crystallized and breakoii' and will operate at high speeds without aifecting its certainty of operation or disengagement of its parts, andto associate therewith mechanism that will positively clear the path of movement of both the punches and the blank.

Among other aims and objects of the invention may be recited the provision of such a device, with a view to compactness, in which the number of parts are few, the construction simple, the cost of production small, but efficiency and operation high, as well as to be adapted for independent attachment to machines of various styles and sizes, without requiring substantial alteration or modification therein.

My new and improved mechanism, as

shown herein, is applied to heading, upsetting machines, or the like, but it may be used with other types of machines.

To these, and other ends, my invention consists in the transfer mechanism having certain details of construction and combinations of parts, as will be hereinafter described and more particularly pointed out in the claims.

Referring to the drawings, in which like numerals of reference designate like parts in the several figures;

Figure 1 is an elevation of my new and improved mechanism as applied to a head--.

ing, upsetting machine, or the like, a portion of which is shown in section;

Figure 2 is a plan view thereof, the parts in section being taken generally upon line 2 2 of Figure 1;

Figure 3 is an end elevation thereof; and

Figures 4 and 5 are elevations of the cam studs.

In thedrawings I have only illustrated so much of the header, upsetting machine, or the like as is essential to show the associa- 1924. Serial No. 714,397.

which is secured a die 11, and a cutter die (not. shown) having an opening 14 therein,

and mounted therein, so as to have a reciprocatory movement is a cutter slide 12 having a cutter 13 connected with the inner'end thereof. i

As the cutter 13 moves across the face of the cutter die, a portion of the wire rod, or the like, that is advanced through the opening 14, is out from the projecting end and forms the blank 15. This blank is now carried inwardly with the cutter until its axis is substantially concentric with that of the opening in the die 11. I

All of the above described mechanism is old and well known in the art and requires no further detail description herein.

While I have shown one form of cutter 18, any other form or shape of cutter may be substituted within my invention. The blank 15, after being cut off at the opening 14 is held in proper relation with the cutter 13, while being carried to the die 11, and my invention in part relates to the type of mechanism for so holding the blank.

The numeral 16 designates a bar that is pivoted by the bolt 17 or the like, to the bracket 18 secured to and movable with the cutter slide 12 between the guide plates 19. This bar is held against lateral movement by the brackets 37' and 38 fixed to the body 16 upon opposite sides thereof. Atthe inner end of this bar is a forked head 20 between the ears of which, pivotally secured by a stud 21, or the like, is the finger block 22, which is limited at the extreme of its moveinents by a stud 23, that projects through ure 2) and is secured in its adjusted positions by the clamp lever 27 the corner 31 of which contacts with the finger below the pintle 26 and the screw 28 above the pintle 26. This finger is, therefore, held in the recess 30 by mechanism having contact therewith and open at two points relatively distant from each other, thereby insuring a readily releasable but rigid attachment of the finger to the block.

F or purposes hereinafter described, if desired, a knock off rod 32, preferably of spring material, may be secured substantially par allel with the finger 29, and by the same means, in which case, the holding means will contact with the knock off rod and the latter with the finger 29. Of course any other means of securing this knock off rod may be substituted if preferred.

As stated in the foregoing, the ejecting finger 32 is formed of spring or yielding material and is adapted to move with the holding member 29 to engage the preceding completed blank to eject the same from the path of the punch. Consequently this finger, upon engagement with the blank, will have energy stored therein and when the energy is released and expended, the completed blank will be forcibly ejected.

The finger block 22 is moved on its pivot mounting in one direction by the plunger 33 within an opening 34 in the head 20, against which is a spring 35, the tension thereof being varied by a screw 36, or the like.

Pivotally mounted on the bracket 38 by the pintle 39 is the latch 40 against one face of which is the plunger 41, moved in one direction by the spring 42, the tension of which holds against the latch is the position substantially as shown in Figure 1. Fixed in this latch, near one end, and projecting inwardly is the cam stud 43 having two cam surfaces 45 and 46, and a base portion 47 that lies within a recess 48 in the latch to prevent relative rotation of the stud 43. i

Fixedin the bar 16 by a pin or key, or the like, isa cam stud 50 having a head portion 51 provided with substantially parallel cam faces 52 and 53. These cam studs 43 and 50 are arranged so that the head portion of one projects into the path of the head portion of the other, substantially as shown in Figure 2.

In vlligure 1 the several parts are in the relative positions occupied by them after the blank 15 is transferred into register with the,

opening in the die 11, at which time the finger 29 is in contact with the blank and holds the same rigidly in the cutter 13 by the tension of the spring 35 against the finger block 22. When so positioned the punch (not shown) engages the blank and projects it into the opening in the die 11. When the blank enters the die the cutter 13 is withdrawn to receive the wire rod for another blank. During this withdrawal of the cutter bar 12 the bar 16 moves therewith and the cam face 53 on the cam stud 50 rides against, and on, the

cam face 54 of the cam stud 43, thereby rocking the bar 16 upon its pivot mounting 17 and lifting the head 20 away from the cutter slide 12. This raises the finger 29 over the blank 15 where it remains until after the cam face 53 has passed over the top of the cam 45, when the spring 55, which is secured at one end to a part connected with the cutter slide 12 and at the other end to'a part connectedwith the head 20 returns it to its position parallel to the cutter slide, at which time the cam stud 50 has passed beyond the cam stud 43.

V hen the cutter 13 is about ready to receive the end of the wire rod from which the blank is cut, the finger 29 contacts with the eccentric stop 56 and rocks the block 22 upon the pivot mounting against the tension of the spring 35,

which leaves anopen space between the lower 1 end of the finger and the cutter sufficient to permit the rod to readily pass therebetween. This stop mechanism is of the usual form.

As the cutter slide 12 moves toward the die 11-, thecam face 52 upon the cam stud 50 engages the cam face 45 of the cam stud 43. and lifts the latch against the tensionof the-spring 42. After the cam stud 50 is passed beyond the cam stud 43, the spring 42 returns the latch to its former position and the operations are repeated as before, and, thus providing for a parallel movement of the bar 16 and cutter slide 12, while the blank is within the cutter 13.

As the knock off rod 32 precedes the finger 29 when the cutter slide approaches the die 11, it will engage and assist gravity in knock inga blank to one side of the dies as it is ejected therefrom, thus insuring an unobstructed path for the next succeeding blank and the punch as it advances to project the blank into the die.

To facilitate access to the die, and for other reasons, the bar 16 and adjacent parts may be moved into an inoperative position, illustrated by the broken lines in Figure 1, by merely. (lisconnecting the spring 55. c

Minor changes and alterations may be made within my invention, aside from those herein suggested, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is z I 1. In combination with a cutter bar of a header, upsetting machine or the like, a bar connected therewith and movable in. a substantially straight path in one direction with said cutter bar, means whereby said bar while moving in the opposite direction with said cutter bar will travel out of a straight path for a portion of its movement, said means comprising a latch, a separable cam member on the latch having oppositely disposed cam faces, yielding means for holding said latch in one of its positions and a separable member connected with said bar having oppositely disposed cam faces adapted to engage the cam faces of the separable cam member whereby said bar is moved upon its pivot mounting while traveling in one direction.

2. In combination with the cutter of a header, upsetting mechanism or the like, a bar connected therewith and movable in a substantially straight path in one direction with said cutter bar, means whereby said bar while moving in the opposite direction with said cutter bar will travel out of a straight path for a portion of its movement, said means comprising a latch having a separable.

I lug formed with oppositely disposed cam faces, yielding means for holding said latch in one of its positions and a second lug connected with said bar having oppositely disposed cam faces adapted to engage the cam faces of the separable lug whereby said bar is moved upon its pivot mounting while traveling in one direction.

3. In a machine of the character described, a blank cutting member, a die, means to retain the blank upon the cutting member to advance the same to a position opposite the die whereby it may be engaged by the punch, and yielding means that moves with the first named means in spaced relation thereto and in advance thereof whereby the blank last presented to the die is projected from the path of the punch after being ejected from the die.

4. In a machine of the character described, a blank cutting member, a die, means to hold the blank in engagement with the cutting member to advance the blank to a position opposite the die whereby it may be engaged by the punch, and a spring finger that moves with the first named means in spaced relation thereto, said spring finger being adapted to engage the blank last presented to the die as it is partially ejected therefrom and whereby the spring finger is flexed and will project said blank from the path of the punch when returning to its non-flexed position.

5. In a'rnachine of the character described, a stationary die, a reciprocating punch coacting with said die, a blank cutting member, means to hold the blank in engagement with the cutting member to advance the blank to a position between the die and punch, means to eject the completed blank from the die, and yielding means carried by the hold ing means that is adapted to engage the par tially ejected blank and in part move toward the holding means while in engagement with the partially ejected blank and return to its former position after the blank has cleared the die.

for a portion of its movement, said means comprising a latch, a removable cam stud with one or more cam faces fixed in the latch and projecting laterally therefrom, yielding means for holding the latch in one of its positions, a removable cam stud having one or more cam faces thereon connected with the cutter bar and projecting laterally therefrom into the path of the first mentioned cam stud, the arrangement of said cam studs being such that the engagement of a cam face on the first mentioned cam stud with the cam face of the other cam stud while the cutter bar is moving in one direction will cause one cam stud to pass over the other cam stud and thereunder while the cutter bar is moving in the other direction.

7. In combination with the cutter bar of a header, upsetting machine or the like, a bar connected therewith and movable in a substantially straight path in one direction with said cutter bar, means whereby said bar while moving in the opposite direction with the cutter bar will travel out of a straight path for a portion of its movement, said means comprising a latch, a removable cam stud with one or more cam faces fixed in the latch and projecting laterally therefrom, yielding means for holding the latch in one of its positions, a removable cam stud having one or more cam faces thereon connected with the cutter bar and projecting laterally therefrom into the path of the first mentioned cam stud, the arrangement of said cam studs being such that the engagement of a cam face on the first mentioned cam stud with the cam face of the other cam stud while the cutter bar is moving in one direction will cause one cam stud to pass over the other cam stud and thereunder while the cutter bar is moving in the other direction, one of said cam studs projecting into a recess in the part with which it is associated and by reason thereof held against relative rotation.

In testimony whereof, I have hereunto affixed my signature.

CLIFFORD O. PETITJEAN.

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