US1395232A - Magazine and sheet-withdrawing mechanism therefor - Google Patents

Description

A. L. KRONQUEST. A MAGAZINE AND SHEET WITHDRAWING MECHANISM THEREFOR.

APPLICATION FILED JULY 3.19I9.

1,395,232. Patented 001;. 25, 1921.

3 SHEETSSHEET l.

A. L. KRONQUEST. MAGAZINE AND SHEET WITHDRIAWING MECHANISM THEREFOR. APPLICATION FILED JULY 3,1919.

1,395,232. Patented Oct. 25, 1921.

3 SHEETSSHEET 2.

A. L, KBONQUEST. MAGAZINE AND SHEET WITHDRAWING MECHANISM THEREFOR.

APPLICATION FILED JULY 3. I919.

Patented 00$ 25, 11921.

3 SHEETSSHEET 3 ALFRED L. KRONQUEST, OE CHICAGO,

COMEANY, INC., 01? SYRACUSE, NEW YORK,

ILLINOIS, ASSIGNOR TO CONTINENTAL CAN A CORPORATION OF NEW YORK.

MAGAZINE AND SHEET-WITHDRAWING MECHANISM THEREFOR.

Application filed July 3,

T 0 all whom it may concern:

Be it known that I, ALFRED L. Knononns'r, a citizen of the United States, residing at Uhicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Ma' azines and Sheet- Withdrawing Mechanism lherefor, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in magazines and sheet withdrawing mechanism therefor, and more particularly to a magazineused for stacking sheet, metal blanks, from which can bodies are to be formed.

An object of the invention is to provide a magazine construction, wherein the retarding friction which holds the sheets from being withdrawn too easily from the bottom of the magazine is substantially uniform regardless of the number of sheets stacked in the magazine.

A further object of the invention is to provide a withdrawing means for the magazine which is so timed as to move slowly during the first part of the sheet withdrawing movement, so as to permit the separation of the lowermost sheet from the one next'above, and thus insure the withdrawing of one sheet at a time from the magazine.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

In the drawings which show by way of illustration one embodiment of the invention Figure 1 is a sectional View through a machine having the improvements embodied therein, said section being taken transversely of the magazine;

Fig. 2 is a side view of a machine embodying the improvements, the parts being broken away to show the operating cam for the sheet withdrawing devices;

Fig. 3 is a sectional view through one of the withdrawing devices and through the supportin table and showing the operating cam in si e view;

Fig. 4 is a sectional view on an enlarged scale through the sheet withdrawing device, said section being taken at right angles to the section shown in Fig. 3.

The invention consists'broadly in a magazine for supporting sheets which are piled Specification of Letters Patent.

- timed and operated and 7 in the drawings.

Patented 0013.25, 1921.

1919. Serial No. 308,474.

number of sheets stacked in the magazine.

inclined faces sub- In other words, these stack above a given stantially support the point in the magazine, so that the pressure against the lowermost sheet is that of the sheets at the bottom of the stack only. Supporting fingers are also associated with the magazine at the bottom thereof, which operate to bend the sheet sharplyas it is withdrawn, so as to aid in the breaking up of the holding suction between two sheets which lie flat against each other. The sheet is withdrawn by suction devices which are ,so as to .move rather slowly during the first part of the movement for withdrawing the sheet and this gives ample time for air to pass between the sheets and break up any vacuum between the sheets and thus insure that one sheet withdrawn from the magazine at a time.

Referring now in detail to the drawings,

only will be the inventionresides more particularly in a magazine which consists of side plates 1 and 2. The side plate 1 is carried by a pair 0 brackets 3-3 which in turn are bolted to a supporting table 4. This side plate 2 is carried by a pair of brackets 5-5 which also is bolted to the table 4. The sheets are stacked in this magazine and are withdrawn therefrom by a pair of suckers, indicated at 6 These suckers move vertically into contact with the lowermost sheet in the magazine and then by. a downward movement withdraw the sheet from they magazine, placing it on the table 4 where suitable devices engage the sheet and move the same edgewise to the machine in which said blank is to be used. The magazine is preferably designed for stacking sheets of tin plate hich are to be cut into blanks to form can bodies, or for stacking, he blanks after they have been out which are to be withdrawn and used for forming can bodies. The essentia feature of the improvement consists in a construction of the magazine and the withdrawin devices which will insure the removing of one sheet at a time from the bottom of the stacked pile or sheets of blanks.

The supporting standards for. the side plates 1 and 2 are located adjacent the ends of the plates, so as to give ample room for the moving of the sheets edgewise from beneath the stack when the sheet has been de osited on the table 4. The side plate 1 is ormed with a cut-away or recess section 8. Located in this recess and extending from end to end of the magazine is a facing plate 9. Said facing plate 9 is formed with notches or grooves 10, which are V-shape in cross section. These notches or grooves 10 are located closely adjacent each other, so as to form substantially V-shaped projections between the notches or grooves. The facing plate is secured to the side plate 1 by bolts 1111. The extreme upper inner face of the side plate 1 is curved, as indicated at 12, to facilitate the placing of the sheets in the magazine. The side plate 2 is provided with a similar recess 8, in which is placed a sheet.

similarly constructed facing plate 9, and said plate is held by suitable bolts 11-11. The facing plate carried by the side plate 2 is formed with notches 10 which are also similar in construction to the notches 10 in the plate 9, which is carried by the side plate 1. Adjacent the lower edge of the facing plate 9 is an inclinedretaining bar 13 which is bolted to the side plates by means of bolts These retaining bars incline toward each other from top to bottom so as to perform an increasing frictional grip upon the The notches or grooves 10-10 in the opposed facing plates are disposed so that a groove for one plate is directly opposite a projection in' the other plate.

The.sheets of metal are indicated at S in the drawings. Said sheets are stacked in the ma azine so as to form a vertical stack. The sidi plates 1 and 2 are capable of being adjusted and are set so that the distance from a projection to the bottom of an opposed grooveis practically the width of a, sheet. Therefore, as the sheets pass down through the magazine, the sheets will be side of the magazine is free at the other and this insures that the stacked-sheets will by their own weight pass down through the magazine, but at the same time the weight of the stack is carried largely by the inclined faces forming the notches or grooves 10. The. retaining bars 13 are" similarly inclined -1.a95,2sa

cured to the side plates by means of bolts. 16. These fingers lie in the path of the sheets and are of suflicient length so as to insure that the sheet must be sharply bent,

as indicated in Fig. 1 of the drawings, as

it is withdrawn from the magazine. Preferably, at one end of the magazine is a guiding standard 16*, which serves to line up the sheets in an endwise direction. The other end of the magazine may be left open or may be provided with a similar guiding standard, if desired.

The sheets are withdrawn from the magazine, as above noted, by suckers 6 and 7. These suckers are similar in construction. Each sucker is in the form of a rubber cup which is secured to the up er end of the vertically sliding shaft 17. ounted on the underface of the table 4 is a bracket 18, carrying a depending sleeve 19. This shaft 17 which is rotated by any suitable means and said shaft is provided with a disk 27 in which is formed a cam groove 28. Mounted on the shaft 24 is an upwardly projecting arm 29 which carries a roller 30 which runs in the groove 28. As this shaft 26 rotates, the arm 29 will be oscillatedand this in turn will oscillate the shaft 24 and raise and lower the arm 22 which moves the shaft 17 up and down and thus brings the rubber sucker cups into contact with the sheets. The shaft 24 is provided with an arm 22 for each sucker, while there is only one arm 29 for oscillating the shaft 24.

The vertical shaft 17, carrying the sucker cups 6, is formed with a central passage 31. The rubber cup 6 is secured to the shaft by means of a screw 32 having a central opening in line with the passage 31. The shaft also has an inclined passage 33, which leads from the central passage 31 to the-outer face of the shaft. The sleeve 19 in which the shaft 17 reciprocates, is formed with a chamber 34 to which a pipe 35 is connected and this pipe 35 leads to a suitable source of suction. Below the chamber 34 is an opening 36. When the shaft 17 is moved upwardly the passages contained therein are brought into connection with the chamber 34 and through the vacuum creating means, said with the opening 36 and this breaks the suction and releases the suction cup from the sheet. The suction cup moves into the recess in the table out of the way of the sheet and the sheet is then moved edgewise. by suitable feeding devices.

The cam groove 28 is shaped so that the section 37 which operates to lower the suckers will move said suckers first downwardly rather slowly so as to give ample time for the air to pass between the lowermost sheet which is being withdrawn and the sheet next above, so as to break up any clinging suction between the sheets. This suction grip of one sheet on the next sheet above is also further broken up by means of the retaining fingers 15, which causes the sheet to be sharply bent as it is withdrawn from the magazine. This, together with the construction of the magazine, which places of parts may a substantlally uniform pressure on the lowermost sheet regardless of the number of sheets stacked in the magazine, insures that one sheet at a time shall be withdrawn from the magazine and placed on thetable 4:.

The suckers are reciprocated so as to withdraw one sheet at a time, placing the same on the table, after which the suckers release the sheet and it is moved edgewise into the machine with which the magazine is associated. Engaging means may be employed for moving the sheet in an endwise direction for properly positioning the same relative to the delivering devices which carry the sheet forward. It will be understood that the improved magazine and sheet withdrawing means may be used in connection with various types of machines.

.It is obvious that minor changes in the details of construction and the arrangement be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described the invention,

what we claim as new and desire to secure by Letters Patent, is:

1. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of the magazine, said magazine having means at spaced intervals for assisting in supporting the stacked sheets at points above the lower end thereof, whereby the pressure of the stacked sheets on the lowermost sheet being withdrawn due .to the weight of the stack is substantially uniform.

2. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of plates on the magazine, said magazine having means extending throughout the entire height 7 thereof for engaging the stacked sheets and assisting in supporting the sheets, whereby the pressure of the stacked sheets on the lowermost-sheet being withdrawn due to the weight of the stack is substantially uniform.

3. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets fromthe bottom of the magazine, said magazine having side members formed with horizontally disposed V-shaped grooves and intermediate projections, the grooves being opposed to the projections, whereby the lower face of the V- shaped groove engages the sheets in the stack and assists in supporting the weight thereof.

4. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of the magazine, said magazine having facing the opposite sides thereof .provided with horizontally disposed V-shaped grooves forming horizontally disposed V-shaped projections between the same, the said V-shaped projections being opposed grooves, whereby the sheets as theyv pass down the magazine will be caused to follow a zig-z'ag path and rest first at one side and bottom of the magazine for sharply bending.

the sheet as it is withdrawn.

.6. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of the magazine, said magazine having facing plates on the opposite sides thereof provided with horizontally disposed V-shaped grooves forming horizontally disposed V-shaped projections between the same, the said V-shaped projections being opposed to the V-shaped grooves whereby the sheets as they pass down the magazine will be caused to follow a zig-zag path and rest first at one side and then the other in the lower faces of the V- shaped grooves, the magazine for sharply bending the sheet as it is withdrawn.

7 The combination of a magazine for supporting stacked sheets, and means for withdrawmg the sheets from the bottom of the magazine, said magazine having side plates formed with horizontally disposed V- and means at the bottom of to the V-shaped shaped grooves and intermediate V-shaped projections, said grooves atone side of sald magazine being opposed to the projections at the other side thereof, whereby the sheet'is' caused to travel in a zig-zag'path as it is lowered in the magazine, and inclined retaining plates at the lower end of the magazine for bending the sheet as it is withdrawn from the magazine.

,8. The combination of a magazine for supporting stacked sheets,and means for withdrawing the sheets from the bottom of the magazine, said magazine having side plates formed with horizontally disposed V- shaped grooves and intermdiate V-shaped projections, said grooves at one side of said magazine being opposed to the projections at the other side thereof, whereby the sheet is caused to travel in a zig-zag path-as it is lowered in the magazine, inclined retaining plates at the lower end of the magazine for bending the sheet as it is withdrawn from the magazine, and fingers at the lower end of the magazine below said inclined plates and extending inwardly beyond said inclined plates for sharply bending the sheet just as it leaves the magazine, so as to insure the separation of the lowermost sheet from the sheet next above.

9. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of the magazine, said magazine having means for assisting in supporting the stacked sheets at points above the lower end thereof, whereby the pressure of the stacked sheets on'the lowermost sheet being withdrawn due to the weight of the stack is substantially uniform, said withdrawing means including spaced suckers, a reciprocating member for each sucker, a cam for reciprocating said suckers, said cam being so shaped as to move the suckers downwardly relatively slowly in the first part of their withdrawing movement.

10. The combination of a magazine for supporting stacked sheets, and means for withdrawing the sheets from the bottom of the magazine, said magazine having facing plates on the opposite sides thereof pro vided with horizontally disposed V-shaped grooves forming horizontally disposed V- shaped projections between the same, the

. drawing movement.

In testimony whereof, I aifix my signature, in the presence of two witnesses.

ALFRED L. KRON QUEST. Witnesses: a

NELLIE T'. RYAN, J. O. TALIAFERRO.

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