US2396988A - Mechanism for removing blanks from magazines and transferring the blanks to mandrels - Google Patents

Description

March 19, E94.

J. CUTLER MECHANISM FOR REMOVING- BLAHKS MAGAZINES AND TRANSFERRING- THE BLANKS T0 MANDREES Original Filed July 10, 1943 5 Shaets-$heet 1 J. CUTLER MECHANISM FOR REMOVING BLANKS FROM MAGAZINES AND TRANSFERRING THE BLANKS ,TO MANDRELS Original Filed July 10, 1943 5 Sheets-Sheet 2.

,Jac0$ Cu? Zen J. CUTLER HANISM FOR REMOVING BLANKS FROM MAGAZINES THE BLANKS T0 MANDRELS Original Filed July 10, 1943 5 Sheets-Sheet E AND TRANSFERRING March 19, 1946. J. CUTLER 3 MECHANISM FOR REMOVING BLANKS FROM MAGAZINES AND TRANSFERRING THE BLANKS TO MANDRELS Original Filed July 10, 1943 5 Sheets-Sheet 4 @cozw 871122 wflg -fi. J. CUTLER 2,396,988

MECHANISM FOR REMOVING BLANKS FROM MAGAZINES 7 AND TRANSFEHRING THE BLANKS TO MANDRELS 7 Original Fi1ed-Ju1y 10, 1943 5 Sheets-Sheet 5 Patented Mar. 19, 1946 MECHANISM FOR, REMOVING BLANKSFROM MAGAZINES AND TRANSFERRING THE BLANKS T MANDRELS w Jacob Cutler, Mattapan, Mass. Original application July 10. 1943, Serial No. 494,239. Divided and this application November 13, 1944, SeriaI'ND. 563,244

Claims. (01. 271e 4) My present invention relates to mechanisms for removing blanks from a magazine in which they are stacked and carrying them to and placing them on a mandrel on which the blanks are formed into jackets.

More specifically the present invention lies in a blank transferring mechanism that is particularly adapted for use in the cone jacket forming machine which constitutes the subject matter of my original application filed July 10, 1943, Serial No. 494,239, of which application the present one is a division.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends, the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following detailed description and then be specifically ointed out in the appended claims, reference being had to the'accompanying drawings, in which:

Fig. 1 is a top plan view of a machine in which my invention is embodied, the machine being the; disclosed in my original application aforesai Fig. 2 is a side elevation of so much of the machine as particularly relates to the present application, the remaining parts of the machine being omitted. r

' letters of reference indicate like parts in 'all the figures, the same reference numbers and letters'.have beenused as are used on like parts of the machine disclosed in my original application aforesaid. V

In general, the machine of my original application (in'w'hich machine the present invention is especially useful) embodies a supporting frame, a drive motor, a'vacuum pump, a magazine for the jacket blanks, a, means to apply adhesive to the-blanks as they are taken from the magazine, a conveying means to take the blanks from the magazine and convey them to the mandrel on which they are formed, a means to fold the blanksabout the-mandrel and cause the adhesiveto function, and a mechanism for stripping the blanks from the mandrel and discharging them from; the machine.

The subject matter of the present application involves only the mechanisms that take the blanks from the magazine, carry them to a position beneath the mandrel and raise the'blanks into contact with the mandrel.

The frame of the machine comprises vertical corner angle bars 1, bottom side and end angle bars 2, top angle bars 3, intermediate side angle bars 4, vertical supports 5 and horizontal supports 6, 6 6 6, and 6 Fig. 3 is a similar view looking at the side opposite that of Fig. 2.

Fig. 4 is an enlarged detail plan view of the blank-carrying fork member and the blank-lift ing member. 1

Fig. 5 is an enlarged detail vertical section on about the line 5-5 of Fig. 1, parts being omitted. V Fig. 6 is a cross section on the line 6-6 of Fig. 5, showing the position of the blank lifter at its lowest position.

Fig. 7 is a view similar to Fig. 6 showing the blank lifter on its upward course and having reached the position shown in Fig. 5.

Fig; 8 is a view similar to Figs. 6 and 7, showing theposition of the parts when the lifter has brought the blank to the mandrel, at which time the blank-carrying fork will have been withdrawn from embracing the lifter.

Fig. "9 is an enlarged detailed vertical section of the valve device which controls the vacuum actions. V

Figs. 10 to 13 inclusive are detail views of the various cam elements that effect the operation of the various parts of the present invention.

f In the drawings in which like numerals and Mounted on the support 6 is a driving electric motor 1 and a vacuum pump II. The motor I has a. drive pulley 9 and a smaller drive pulley l0 secured to its shaft 8 (see Fig. 3), while the pump shaft 12 carries-a large driven pulley l3. Theqpulleys 9 andl3 are connected by a beltl4, thereby constituting a reduction speed drive for the pump." The small pulley I0 is connected by a belt IT to a large pulley l6 on a stub shaft l5.

vThe pulley ids-secured. to the stub shaft 15 as is also a pinion l8 which meshes with a master gear 20 on a cam-shaft-lll," v

'The' cam-shaft I9 is journalled in suitable bearings 2| that are mounted on supports 22 which are carried by the side bars 2 of the frame.

secured to the bars 4 is a transverse angle bar 23, there being another such bar 23 mounted below and secured to the supports 22. Secured, at suitably spaced intervals, to the bars 23 are vertical supports 24 for the pivots 255 of the several cam levers shown in detail in Figs. 10 tol3inclusivel The operating cams V Referring now particularly to Figs. 2, 3 andlO to 13 inclusive, it will be seen that the several cams comprisesplitclamps that carry the various cam rollers. Fig. 10 shows thejacket blank carrier advancing cam 31, the blank carrier retracting cam 39 and the respective arms 38 and 40 of the lever M which cooperate with the cams 31 and v 39, respectively. Fig. 11 shows the vacuumicontrolcam 44- and its" lever 45. Fig. 12 shows tlie cam42and its lever 43 which serve to effect the raising and lowering of the jacket blank carrier when the carrier is beneath the magazine. Fig. 13 shows thecam 29andits lever which eifect the raising and lowering of the device which lifts the blanks to and partly about" the mandrel.

The blank transfertmechanism,

Slidably mounted on rigid guide rods BIL-is a carriage 9I (Fig. l) which carries a bracket 89.- Oil pads 92 are located on the rods 90 between furcationsof thesliding-carriage 9| andslide 0 with it along the rods to lubricate the bearing surfaces=- 93 is a back-stop for the. carriage and'is "secured to the frame adjustably.

Vertically, slidably mounted in suitable bearingsin-thebracket 89 (Figs. .3, 4 and 5) is a 26 rod 95 to the top of which.- is rigidly secured an oflset bracket 98,- to which theblank removing ancl carrying forked member (or transfer member) 99 is rigidly fastened, as-at I00. The rod 7 95; between the upper and lower bearings 94, 30 carries a spring 91-and a spring-tension-adjusting collar-:96.- The shaft or rod 95 is held from turning on its axis'bymeans of an arm258 whose end'isslidable in avertically slotted stud 2-56'that is-secured to the bracket 89 (Fig. 3). 3

Thejack'et blanks transfer member 99 includes converging arms IOI- having along their upper faces-longitudinal grooved portions .102. Ducts I0-4," I05 are formed in the member99 and communicate with ports I03 in. the grooved portions 49 I-'02-- (Fig. '4). The duct I05-is connected to a flexible duct I0! bymeans of a nipple I06. The duct-I01 is connected-to the suctionregulating valve I25 that communicates withthesuction pu "II-via nttii'ig m, flexible duct-I24, rigid 'duct123, suction control valve II9, and'flexible duct I22 (Figs.2and 3) PBrackets I08; secured-to'the frame of the machinegcarry a rock shaft 109 and an arm III]; A connecting rod H4 connects arm IIO with {cam} lever 43 (Figs. 2 and" 12) Secured to the shaft-I09 is 'a lever or rocker arm III having a beveled' edge -II2. The lever -III lles'in. the plane in which the rod 95 is moved by the carriage 9| so that when the carriage is its 5 retracted or back position the rod 95 will have ridden up onto the end of lever Ill (Fig. .3).

'A spring II3 connects the rear end of lever III with the frame of the machine and constantly tends to-urge the lever III to lower :its beveled 69 end. a

- The sliding carriage9l also-hasa slotted lu II5'to which is pivoted one" end of. a link IIB, the other end of which is pivoted to the cam lever 4 I.- 1 J The suction control value.

The suction control (on and off) valve I I9 has its stem I20 linked to a leveraI I8. One end of the lever I I8 is pivoted to a bracket 1, while the other end thereof is joined by a spring I32, constituting ayieldable connection, to they conf nectingrod-HI -th at ioin sto-cam lever 45. The valve II 9 is of a special fkind inorder to effect properly the timely action of the suction short time, namely only while head I33 is taking means. This valve comprises a casing having a valve seat 259 for controlling the main passage. The neck 262 of the valve has an annular groove 263 from which leads a port 266 to the nipple 261 to which the flexible duct I43 connects.

' The stem 260 of the'valveh'a's the valve plug 26I which cooperates with the -seate259. The stem also has a bore 264 entering its lower end. Ports 265 efiect communication between the bore 264 and the groove 263 when the plug 26I is seated, i. c. When the stem 260 is pressed down by the lever IIBfthereby cutting 01f the suction to the fork fingers WI and the mandrel and establishing suction in the pipe I40.

The valve stem-260 is held down only for a a blank off the blank transfer member 99 (Fig. 7) and elevating it to the mandrel 10. As soon as pipe I40 contacts the mandrel and is depressed to the bottom of the groove I39, valve II9 returns tonormal position i. e., with passage via seat 259 open and passage via 264, 263, and 266 closed.

Located for up and down movement beneath the operative part of the mandrel I0 is a grooved folding head I33 that is carriedby a vertically reciprocatable rod I35. ,The rodv I35 is mounted in a bearing boss I34 (Fig. :3) depending irom theplate 48 and is pivoted at its lower end to a lever I36 thatis fulcrumed. in

a second boss I44, also depending from the'plate 48. The lever I36 is connected, by a connecting rod I31, with cam lever 30 (Fig. 13).

Th groove I38 in the head I33 conforms to the shape of the mandrel I0. The head has a bore I39 intersecting the groove I38, through which bore a pipe I49 projects. The pipe I40 is held with its upper or free end located on a level preferably slightly below the level of; the top of the head, by means .of a spring l4ll and a stop collar MI. The lower end .ofthe pipe I40'is connected to a flexible duct I43 (Figs. 2 and.3) which in turn connects to and is controlled bythevalvel I9. a 4 v The blank magazine 67 is fixedly held .by a bracket 68 which in part also carries the slotted guides I5 and the mandrel ;l0,- the latter also being supported on the cross. bar -5 I. The magazine 61 is provided with leaf springs 253'and a finger 268 for holding the packof blanks from falling out of the magazine an dfor this purposethe springs 253 have their lower ends 251 bent inwardly (Fig.5). v r

Operation Assumethe parts to be in the position shown in Figs. 1, 2 and 3. At this timethefblankltransferring mechanism is in its retracted position, the fork 99 lying directly beneath themag'azine. 61.?

Cam 42 is just about to engage lever-'43 (Fig. 12) to cause lever I II .to. lift'iodj Jand the jacket-transferring member 99in order to gather a jacket. blank fromthe magazine- Continued operation of the machine. causesthemem'ber .99 to be raised up to the magazine .(see dotted. lines, Fig. 5); causes valve II9 toopenbyspring -I'2I, allowing pump I I to produce a suction'i'n'grooves I02of the transfer fork, thereby .to draw. down the bottom blank-from the magazine. Asysoon as the blank has adhered to the arms I0 I ofthe I0. Asithe carriage advances, takingwithitthe blank, the head 'I 33 -rern ains at itslowerposition so that it will be str addled'by the fork when the fork reaches its farthest advanced position (Fig.

As soon as the fork 99 reaches the position shown in Fig. 4, the head I33 rises and the jacket is lifted from the fork arms I0 I'.

It should be understood that suction is maintained in the fork fingers from the time the fork takes a blank from the bottom of the stack in the magazine and carries it to the head I33 until the head takes up the blank. As soon as the head has lifted the blank from the fork lill the carriage 89 returns to the position shown in Figs. 1, 2 and 3, thus completing a cycle of operation.

While I have shown a practical and preferred embodiment of'my invention I wish it understood that changes in the construction may be made without departing from the spirit of the invention within the scope of the appended claims.

From the foregoing description taken in connection with the accompanying drawings it is thought the complete construction, operation and advantages of my invention will be clear to those skilled in the art to which it appertains.

What I claim is:

1. In a jacket forming machine wherein is provided a magazine for stacked blanks and a distant mandrel to which blanks are to be transferred, the improvement which includes: a supporting frame; a carriage horizontally reciprocatably mounted on said frame; a vertically movable blank transferring member mounted on and carried by said carriage and positioned to lie directly under and spaced from the magazine when said carriage is at one extremity of its path of movement and to lie under and spaced from said mandrel when the carriage is at the other extremity of its path of movement, means for advancing and retracting said carriage; and means for raising and lowering said blank transferring member while the carriage is retracted; and means to cause the bottom blank to adhere to the blank transferring member when said member is raised to withdraw a blank from the magazine and hold the blank while it is being transferred to the mandrel. I

2. The machine of claim 1 in which said means for raising and lowering said blank transferring member includes a pivoted rocker fixedly located on said supporting frame, a vertically slidable rod mounted on said carriage, on which said blank transfer member is mounted, said rod engaging said pivoted rocker when the carriage is in its retracted position, and cam means for actuating said rocker to raise and lower said rod at timed intervals.

3. In a jacket forming machine wherein is provided a magazine for stacked blanks and a distant mandrel to which the blanks are to be transferred and applied, the improvement which includes; a supporting frame; a rectilinearly reciprocatable carriage mounted on the frame to pass under the magazine and the mandrel; a vertically reciprocatable blank transfer member mounted on said frame and including a forked member having grooves in the upper face of the arms of the fork and havinglsuction ducts connecting with said grooves; means for moving said carriage back and. forth to bring said forked member alternately beneath the magazine and the mandrel; means to raise and lower said transfer member when it is beneath the magazine; and means operable between the forked member arms when the same is beneath the mandrel for lifting the blank from said forked member and placing it against the mandrel.

4. The machine of claim 3 wherein said blanklifting means includes a grooved head, a vertically movable rod on which said head is mounted, a spring-loaded suction pipe projecting through a hole in said head and into the groove thereof for holding the blank as the blank is lifted from the forked member and until the blank reaches the mandrel.

5. The machine of claim 3 wherein said blanklifting means includes a reciprocating head operable between the arms of said forked member while said forked member is beneath the mandrel, and suction means cooperative with said head for holding the blank on said head while it is rising to the mandrel; and means for timing the suction means of said forked member and that of said head so as to cause the suction means of said head to act as soon as that of said forked member ceases to act while beneath the mandrel.

JACOB CUTLER.

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