US2669455A - Sheet delivering apparatus - Google Patents

Description

Feb. 16, 1954 A. J. HORY SHEET DELIVERING APPARATUS Filed June 19, 1948 3 Sheets-Sheet 1 Fl SJ.

INVENTOR. ALBERT J.HO RY 14. max

ATTORNEYS Feb. 16, 1954 Filed June 19, 1948 A. J. HORY SHEET DELIVERING APPARATUS 3 SheetsSheet 2 A LBERT J. HORY ATTO RNEYS Feb. 16, 1954 A. HORY 2,669,455

SHEET DELIVERING APPARATUS Filed June 19, 1948 3 Sheets-Sheet 3 lllllllllllllIlllllliiilllllllllll! imgiimlguu' INVENTOR. ALBERT d. HORY ATIORNEYS Patented Feb. 16, 1954 UNITED STATES PATENT OFFICE SHEET DELIVERING APPARATUS Albert J. Hory, Detroit, Mich.

Application June 19, 1948, Serial No. 34,080

1 Claim. 1

The present invention relates to means for handling sheets of paper or the like in feeding such sheets to and removing them from presses,

I specifically engraving presses.

Among the objects of the invention is to provide a Simple, relatively inexpensive, efficient means for lifting a single sheet of paper from a stock pile, placing it in proper position in a press and, after the impression has been made, lifting it from the press and depositing it at a suitable location, and, in the case of engravin presses, turning it face or ink-side up.

Another object is the provision of means of the type indicated which is actuated from a suitable portion of the press mechanism so that it is actuated in exact synchronism with the press.

Other objects will readily occur to those skilled in the art upon reference to the followin description and the accompanying drawing in which Fig. 1 is a perspective view showing the device mounted in position to tend a press, a portion of the latter being shown.

Fig. 2 is a view of the mechanism, from the left of Fig. 1, parts being omitted for clarity.

Fig. 3 is an end View of the complete mechanism.

Fig. i is an enlarged elevation of the valve mechanism.

Fig. 5 is a sectional view of the valve.

Fig. 6 is a View in elevation of the paper stock magazine and mean for positioning said stock therein.

As indicated in the drawings, the structure comprises broadly mechanism including arms carrying suction cups which pick up a single sheet of paper from a suitably located pile of stock and convey it to its proper location in a press and then release it to receive the impression. It also comprises other arms carrying suction cups which pick up the impressed sheet and carry it to a suitable location where the sheet is released, during which operation the sheet is reversed.

In Fig. i a portion of a conventional press is shown at A, this including among other mechanism a suitable rotary element B (Fig. 3) by which the present device is actuated. Located in front of the press A and fixed thereto in any suitable fashion is a table ID serving as a support for the feed mechanism about to be described.

Referring to Fig. 1, a stock of paper is shown at II with single sheet IIA in the press and the sheet handling members in the positions these occupy immediately after the press has made the impression. The feeder fingers I 2 are in position to pick up a fresh sheet and the takeoff fingers I3 are in position to remove the impressed sheet from the press.

In Fig. 2, the fingers are at the other extremes of their motions; that is, the fingers I2 are in the position of delivering a sheet to the press while the fingers I3 are in the position in which they release an impressed sheet.

As shown best in Figs. 2 and 3, the mechanism for causing the desired operation of the fingers I2 and I3 comprises a shaft 20, to an end of which is fixed a crank arm 211A connected to a pitman 20B actuable from a suitable rotary member B forming part of the press mechanism.

The attachment of pitman 203 to the arm 20A is preferably through a suitable adjustable memher 290 and the attachment of arm 20A to shaft 20 is also an adjustable clamp device so that the radial position of the arm on the shaft and the length of stroke of the arm may be accurately adjusted.

Carried on the shaft 20 and adjustably fixed thereto is a second arm 2i which, as shown in full lines in Fig. 3, extends upwardly and then forwardly, being sufficiently long in this forwardly extendin portion to reach to a point near the press.

This arm 2I at its end is connected to a shaft 22, the latter being rotatable in the end of the arm and carrying the fingers l2. Shaft 22 is fixed at one end to one end of a link 23 and this link, at its other end is hinged to a second link 23A which in turn is hinged to the end of a swinging arm 24 hinged, as at 24A to table If). The position of the hinge 24A and the length of the several links and arm is such that, in the full line position of Fig. 3 the ends of fingers I2 are close to the plunger of the press A.

The shaft Ell also has fixed thereto a bevel gear as meshing with a suitable mating gear on a shaft 3| arranged at right angles to shaft 20. This shaft 3| carries an arm 32, similar to arm 2|, which is connected at its outer end to a shaft 32A upon which are carried the fingers iii, the shaft 32A being rotatable with respect to the arm.

This shaft 32A is fixed to the end of a link 323, which at its other end is hinged to a swing ing arm 32C, in turn hinged as at 33 to the table It], the link fingers and arm 320 being of such lengths as to allow the fingers to reach the position shown in Fig. 1.

It will be noted that the hinge point 33 is shown as a circular member since it is desirable to provide at this point a suitable coil spring to counterbalance the weight of arm 32 and attached parts. Such springs are well. known and hence no detailed construction is shown.

The bevel gearing 30 should be so arranged that the arms 2I and 32 move forward and back alternately. The fingers l2 and I3 are tubular and provided at their forward ends with suction cups I2A and ISA and to the rearward end of each finger is attached a flexible tube 35 leading to a header 36 shown branched and mounted upon a suitable elevated support 66A. From the header 36 a tube 31 leads to a valve 38 shown in detail in Figs. 4 and 5.

This valve consists of a body or housing 38A in which fits a cylindrical member 33B having a diametrical passage 38C to which is connected a branch passage 38D. The valve body is also provided with openings or passages 33E and 38F diametrically opposite each other and to one of which, 38F, is connected the tube 37 leading to header 36. To the other passage 38E is connected a suction pump (not shown).

The valve body is also provided with another passage 38H opening to the atmosphere and so arranged that when the member 3613 is partially rotated to bring the branch passage 3813 into registry with passage 38F, the other end of passage 380 will register with the opening 3311 and thereby relieve suction on the fingers.

The valve member 363 is oscillated from the position shown in Fig. suction position to the position just described by the means shown in Figs. 3 to 4.

As shown in Fig. 3, the shaft 35 carries a large gear 80 meshing with a smaller gear 60A fixed to a short shaft 4!. Also fixed to shaft M is a gear 403 meshing with a somewhat smaller gear 900 fixed to a shaft 12 mounted for rotation in axial alignment with the valve member 3613. Upon the sa ine shaft 62 is fixed a chuck 68 within which is a cylindrical block 66A held in adjusted radial location by a set screw 6313.

This block 63A carries a pin 'M extending toward the valve 36 and a second pin 16A is mounted in the edge of the chuck 03. These two pins coact with a radially extending pin 65 fixed to the hub 38K of valve member 683 and as the chuck 43 is oscillated, cause the valve member to be moved from its one position to the other, overrun being prevented by the spring pressed ball 46 carried by valve body 38A coasting with suitable notches in the member 38B.

By suitable operation of the valve 38, the suction cups IZA and WA are simultaneously activated and deactivated.

Since the path of movement of the feed fingers i2 is quite accurately determined and since the depth of the pile of stock is constantly decreasing during the operation of the press and feed means, means is provided to maintain the location of the top sheet in the stock pile. This means is shown in detail in Figs. 2, 3 and 6.

In these figures, the stock magazine is shown as consisting of a slanting base or support 50 carrying a slide 50A, the paper stock being placed on edge on the base 50 and against the slide 50A. To this slide is connected a pair of tapes 503 (shown in Fig. 2, hanging detached) extending substantially parallel to the base 50 over pulleys or rollers 50C, and then downwardly to wrap around a shaft 5i upon which is fixed a pair of ratchet wheels MA and 52, the former 5IA, coacting with a suitable pawl 5H3 carried by a post 5IC fixed to the table '10. This ratchet wheel and pawl combination serves to maintain the shaft 51 against reverse movement.

The positive movement of shaft 5i and consequent forward movement of the slide 50A and stock is caused by the mechanism shown in detail in Figs. 2 and 6.

In these figures, the shaft 20 is shown as having fixed thereto a sprocket 55 driving through chain 55A a second sprocket 56 upon the hub of which is a projecting radial pin 56A, this second sprocket being loosely mounted on shaft 5|. Adjacent this sprocket 56 and also loosely mounted on shaft 5| is a cup-shaped member 51 adapted to cover the ratchet wheel 52, a small portion of the cup being cut away as shown in Fig. 6 at 51A to expose a few of the ratchet teeth.

This member 51' is positioned radially of shaft 5| in accordance with the thickness of the stockpile by means of a pivoted arm 58 one end of whichcontacts the top of the stockpile through the cross member 5813 and the other of which is connected through a link 58A to an arm 58B fixed to the member 51, a spring 58C suitably anchored, being arranged to bias the linkage toward stock contacting position.

Arranged alongside of ratchet wheel 5|B is a large gear 60 loosely carried on shaft 5| and meshing with a smaller gear 60A fixed to shaft 20.

The gear 66 carries on one face a pawl 603 located over the ratchet wheel 52 and adapted to coact therewith to produce a positive movement of shaft 51. The pawl 60B, however, is allowed to act on wheel 52 or prevented from doing so by the position of member 51 and, as stated above, this position is determined by the amount of stock in the magazine.

As the stock is used from the top of the pile, the linkage 56 will move the member 5? counterclockwise so that the pawl 69B can drop upon wheel 52 and move it forward. The pawl 60B is released from the wheel by the action of the pin 56A striking another pin 61 carried by member 51.

I claim:

In paper handling means for engraving presses, an oscillatable arm having suspended therefrom at its free end one end of a link, a laterally extending rod fixed to said link, a second oscillatable arm arranged below and hinged to the other end of said link, means for oscillating said second arm, suction cups carried by said rod and in fixed relation thereto, said arms and link being so arranged that, at one end of the oscillation of the second arm, the first arm and link are in extended relation and at the other end of said oscillation the link is approximately parallel to and below the first arm, and means for producing a partial vacuum in said cups during said extended relation and for breaking said vacuum at the other end of said oscillation.

ALBERT J. I-IORY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 406,059 Orser July 2, 1889 648,066 Eulluck Apr. 2 1, 1900 794,146 Ericson July 4, 1905 876,987 Molinar Jan. 21, 1908 1,886,282 Low Nov. 1, 1932 1,963,694 Davidson June 19, 1934 2,145,916 Belluche et al 1- Feb. 7, 1939 2,177,787 Root Oct. 31, 1939 2,262,109 Miller Nov. 11, 1941 2,318,165 Kluge May l, 1943 2,444,504 Grogan July 6, 1948 2,520,322 Mestre Aug. 29, 1950 FOREIGN PATENTS Number Country Date 602,489 Germany Sept. 11, 1934

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