US1731606A - Fiber-dish machine - Google Patents

Description

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G. A. BELL ET AL 1,71%,606

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Patented Oct. 15, 1929 UNITED STATES PATENT orrica GEORGE A. BELL AND JOHN H. CARSON, OF MARION, INDIANA, ASSIGNORS TO INDIANA FIBRE PRODUCTS COMPANY, OF MARION,

INDIANA, A CORPORATION FIBER-DISH ma'cnma Application filed March 8, 1926. Serial 1T0. 93,352.

This invention pertains to a paper pie plate or dish making machine.

The object of the invention is to provide a machine wherein the stock in the form of an endless paper sheet is automatically and periodically fed into the machine, from which the blanks are cut, after which they drop into position tobe stamped by a suitable die for dishing them and then drop onto a conveyor belt which conveys the completedarticle from the machine.

One feature of the invention resides in the automatic means for feeding the paper into the machine whereby it will be fed to the proper extent and'thefi stopped sufiiciently long for the shears to cut out the proper blanks.

Another feature of the invention resides in the arrangement of the shears whereby they are staggered with relation to each other so as'to eliminate any waste stock, and are providedwith means for overcoming the usual vacuum and forcing the blank from the shears so it will readily drop into position to be stamped into shape.

Another feature of the invention resides in the mechanism for operating the dies and the means for feeding the paper blanks thereto and discharging them therefrom onto a conveyor belt, the paper stock being properly heated'by the dies so that they can readily conform to the shaping thereof.

Other features of the invention will be hereinafter more fully set forth and described.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims.

Fig. 1 is a front elevation of the machine.

Fig. 2 is the same as Fig. 1 showing parts thereof removed so as to illustrate the positioning of the shears and dies and the means for guiding the blanks from the shears to the dies. Fig. 3 is a side elevation of the machine illustratingits position at the time that the paper is being fed to the shears and 4: is the same as Fig. 3 showing the position of the machine upon the feeding of the paper being stopped, the shears operating to cut the blank and the dies being in position to supporting mechanism.

receive the blank. Fig. 5 is a section taken on the line 5-5 of Fig. 1 illustrating the relative position of the dies and shears. Fig. 6 is the same as Fig. 5 illustrating the position of the machine after the shears have cut the stock, the dies being shown in operative position for dishing the blank. Fig. 7 is a detailed view showing the feeding mechanism. Fig. 8' is a detailed view showing the blank Fig. 9 is a detailed view showing the male ilpechanism therefor taken on the line 9.-9 of ig. 1. In the drawings there is shown a machine having side frames 10 with a power drive pulley 11 which is keyed to the shaft 12, said shaft being rotatably mounted in suitable bearings'in the side frames side frames there is a substantially vertically mounted face plate 13 which is provided with staggered circular openings 14 for receiving the shearing plungers 15, whereby acircular blank-will be cut from the stock upon the shear being forced into said opening. As will be noted herein, the' circular shears with their respective openings are positioned in staggered relation on and so spaced with respect to each other that all available stock will be used in the cutting process, 1. e., cutting of the stock being stag gered in the usual manner which would not be possible if the shears were in the same horizontal plane.

The aper stock 16 is pulled off of the usual roll or mating and inoistening table and onto the table 17. The stock being normally curly, due to having straightened by means of a plurality of rollers 17, 17 and 17. Roller 17 is stationary as well as the roller 17, whereas the roller 17" is mounted on a lever 17, which is pivotally mounted on the frame at 17.", the opposite devices and actua g 10. Between the the face of the machinev been contained in the roll, is 1 ends of the lever 17 being connected with an arm 17' which is adjustably supported by a bracket 17, whereby the position of the roller 17 'with respect to the rollers 17 and 17 will cause the paper to pass around the bend for takin the curl therefrom and straightening it. T e stock then passes between the roller 18 and feed roller 19. The roller 19 is mount riphery ed on the shaft uponwhich the control ratchet 21 is keyed having the ratchet teeth 22, there being shown herein three sets of teeth. Pivotally mounted on the shaft 20 there is a bell crank lever 23 having a spring actuated pawl 24 adapted to engage said teeth, the opposite end of the bell crank lever 23 being pivotally connected with the link 25 whieh in turn is connected to the upper end of the arm 26. p The lower end of said arm is pivotally mounted on the shaft 27 Between the ends of the arm there is a projecting portion having a cam engaging roller 28 in position to be engaged and operated by the cam 29 keyed to the shaft 12. By means of this arrangement, as the shaft 12 is rotated the cam 29 will cause such action with the pawl 24 as to rotate the shaft 20 one-third revolution and feed that amount of stock in the machine which is equal to one-third of the peof the feed roller 19, or slightly more than the diameter of the blank to be cut. Thereafter the feeding of the paper will be arrested while the pawl 24 is brought into engagement with the succeeding ratchet tooth so as to give ample time for the shears to operate for cutting the blank.

The shears 15 are mounted on their respective cutting blocks 30 which in turn are secured to a common carrying block 31 slidably mounted in the frame 32. The block 31 is connected with the rod 33 through the rearwardly extending projection 34. The rod 33 extends across the machine from-one side to the other, having its ends supported in the sliding plates 34 and connected with the arm 35, the projection 34 being slidable in the fixedguides 36 mounted on each side of the machine. The forward end of the arm is enlarged so as to embrace the cam 37 which is keyed to the shaft 12. By reason of this arrangement, upon rotation of the shaft 12, the sliding block 31 isreciprocated in its frame 32 and the shears 15 are caused to move forwardly into the openings 14 of the plate 13. As will be noted in Figs. 5 and 6 the paper passing in between the rear surface of the plate 13 and the shears will have circular blanks cut therefrom, the scrap falling downwardly and deflecting rearwardly so as to be discharged from the machine.

Uponthe blanks being cut by the recip: rocating cutting action of the shears, in order to overcome the vacuum and prevent the paper from being drawn back through the dies so that the blanks will drop in their respective guides, there is a plunger 41 mounted in the face of each shear so as to seat therein and not engage the paper ahead of the cutting action of the shears, but upon the return of the shear from cutting action will be caused to move outwardly with respect to the shear and retaina fixed position with respect to the face plate 13, where by the blanks will bc'prevented from returning with the shear and will drop by gravity along the forward or front surface of the face plate 13. The mechanism for.

actuating the plungers 41 comprise the stem 42 upon which the plunger is mounted, which extends rearwardly through the blocks 31 and 30 ,so as to be slidable therein. Said stem has a head 43 and a compression spring 44 surrounding the same between the head and block 31 whereby it will normally be maintained in closed position as shown. in Fig. 5. The block 31 carries a plurality of rearwardly extending ears 45 upon each of which there is a fulcrurned arm 46. The arms 46 are each provided with a head 47. in position to engage the respective heads 43 of the pins 42. The opposite ends of the arms 46 are pivotally connected wit-l1 their respective rods 43 which are securely anchored to the frame of the machine. It will be noted that in normal position the spring 44 will maintain the plunger 41 seated in the shear.

Said plunger will remain,

seated therein as the shear is moved outwardly so as to cut the stock. Upon the shear reaching its furthermost movement, the plunger, by reason of the action of the fulcrumed arm 46, will be forced outwardly from the face thereof against the severed blank so as to completely separate it from the shear, break the vacuum and permit it to drop down on the outside of the face plate, as shown in Fig. 6.

Mounted on the front of the face plate 13 there are a plurality of guide flanges 5O arranged in vertical position for guiding the blanks downwardly after they are cut, into position to be received by the die. Properly positioned at the lower end of the flanges 50 and intermediate the same there are a plurality of sto pins 51 slidably extending through a suitable opening in the face plate for engaging and arresting the downward movement of the severed blanks 52. The upperstop pins 51 extend through the face plate directly above the die block and the lower stop pins 53 extend therethrough immediately below said die block. .The pins 51 and lever 55 having an arm 56 connected to and actuated by the rod 57 which in turn is connected with the lever 58 fulcrumed on the side of the machine at 59 and having its opposite ends provided with a roller 60 movable in the cam 61 which is mounted i 53 are slidably mounted in a suitable framework 54 and are connected with thethe sliding frame 62 .is provided forced forwardly through the I shears to their in roper position for stamping by the die.

Surrounding 'the plungers and intermediate thereof and behind theface plate 13 there is a stripper. plate 13, which in normal position lies flush with the face of the plunger-s 15. Said late is supported in connection with the' locks 30 and 31 by a plurality of springs 13". Said stripper plate is resiliently forced against the remainder of the sheet after the blanks have been punched therefrom for pushing scrap paper forward from around the punches and supporting it in position during the shearing or punching action, as shown in Fig. 6, but relieving the same, as shown in Fig. 5, for permit-ting the sheet to pass on through the machine. The springs 13 are employed to compensate for sheets of varying thickness, whereby variations of thickness of said sheets will not affect the punching action of the sheets or plungers. The spring mounting of the stripper plate will in the same manner accomplish this for multiple sheets, the same through a machine simultaneously.

Mounted below the face plate 13 and in alignment therewith there are female die blocks 60 secured upon the frame "54, said female blocks being so sha ed as to receive and permit the blank to e dished therein. The male die blocks 61 are mounted in pairs. as shown in Fig.9, and are supported on slidably mounted in the side frame 63 which is rigidly secured to the machine. Each die block has a rearwardly extending stud 64; about which the compression spring 65 extends, said spring being mounted between the cross frame 62 and the bar. 66 which is slidably mounted on the stud. The bar 66, intermediate each of the studs for the respective pair of (lies with a depression for receiving the lower end of the rocker arm 67 so that wherein the lower end of the rocker arm is medium of the cross bar 66, the male die will be brought into engagement with the female die by reason of the pressure exerted upon the compression spring 65. This will act to equalize the movement and action of the dies so that no undue strain will be imparted thereto.

The rocker arm 67 is fulcrumed on the shaft 2?,and at its upper end is provided with a roller 68 adapted to engage the cam 69 which is keyed to the shaft 12. The movement ot the rocker arm is so timed that it will cause the dies to engage and press the blank into dish shape at the same time that the shears operate to cut a. set of new blanks whereby the operation of the machine is continuous. There are illustrated herein four shears and four dies, the guide plate 50 guiding the blanks cut by each of the respective dies, there being wherein it may be desired to pass -including means for always some of blanks indicated at 52 waiting to be received by the die after the finished dish 70 has been stamped and discharged therefrom onto the conveyor belt 71. i

compression spring 7'5 which acts to return I the male dies after having been actuated by the rocker arm 67 It is essential that the dies be heated so as to impart heat to the stock being stamped therein, and to that end there are provided suitable gas burners 7 6 positioned to throw flames on the backs of the female and male dies for heating the same. However, as it is detrimental to have the heat applied to the dies carried to the shears because of the expansion and contraction thereof, the die support frame 54: is provided with a water cooling jacket 7 7. This prevents the greater portion of heat from passing to that portion" of the frame carrying the shears.

As shown in Fig. 1, the shaft 20 upon which the paper feed roll 19 is mounted, is 'provided with a brake drum of the usual character; about which the brake band 81 is mounted so as to exert a constant friction restistance to the movement of the shaft which may be overcome onlyby the actuation of the pawl 24 upon the ratchet wheel 21. This will cause the feeding of the paper to be instantly arrested and held against further movement upon the stopping of the forward movement of the pawl. Thus there will be no free play or coasting of the feeding apparatus and accordingly a more posi tive action.

The invention claimed is:

1. A machine of the character ,described feeding a paper strip into the machine, a plurality of blank cutting shears positioned in staggered relation to each other on said machine. a forming die associated with and spaced from each of said shears, means for guiding the blanks cut by each of said shears to its respective die, and means for actuating said shears and dies in timed relation to each other.

2. A machine of the character described including means'for feeding a paper strip into the machine, a plurality of shears mounted in said machine for cutting a plurality of blanks from the paper strip, a shaping and forming die mounted in said machine associated with and spaced from each of said timed relation with each other.

3. A machine of the character described including means for feeding a paper strip into themachine, a plurality of shears for cutting blanks from said strip, said shears being formed in staggered relation with respect to each other so as to partially Overlap and thereby minimize waste, a forming and shaping die on said machine associated .with and spaced from each of said shears,

means for causing the blanks to pass from the shears to their respective dies, and means for actuating said shears and dies in timed relation with each other.

4-. A machine of the character described including a substantially vertical face plate, a plurality of shears mounted on said machine and associated with said face plate for cutting blanks from a paper strip fed therein, a forming and shaping die for each shear mounted below their respective shears in position to receive said blanks as they are dropped therefrom, means mounted on said face plate for guiding said blanks from the shears to their respective dies, and means for actuating said shears and dies in timed relation with each other.

5. A machine of the character described including a substantially vertical face plate, means for feeding a paper strip into said machine along the rear surface of said face plate, a plurality of shears mounted in the rear of said face plate in staggered relation to each other for cutting blanks from .said paper and forcing said blanks through suitable openings in said face plate to the forward surface thereof, a die associated with said face plate for each of said shears and positioned below the same, a plurality of guide members for guiding the. blanks down the forward surface of said face plate to their respective dies, and means for actuating said shears and dies in timed relation to each other.

6. A machine of the character described including means for feeding a paper strip into the machine, a blankcutting shear mounted on said machine, a female die for receiving a blank cut by said shear, means for actuating said shear and die in timed relation to each other, said die havinga normally protruding plunger slidably mounted therein provided with a head seatable in the surface thereof, a male die having a plunger slidable therein and provided with a head normally projecting therefrom and seatable in the surface thereof, said plunger heads being so positioned as to receive and grip a blank therebetween and maintain it in position between the members of said die until they are operated to form and shape the same and thereafter to cause the formed blank to be ejected from the female die.

7. A machine of the character described ineluding means for feeding a paper strip into the machine, a blank cutting shear mounted on said machine, a female die for receiving a blank cut by said shear, means for actuating said shear and die in timed relation to each other, said die having a normally protruding plunger slidably mounted therein provided with a head seatable in the surface thereof, a male die having a plunger slidable therein and provided with a head normally projecting therefrom and seatable in the surface thereof, said plunger heads being so positioned as to receive and grip a blank there between and maintain it in position between the members of said die until they are operated to form and shape the same and thereafter to cause the formed blank to be ejected from the female die, and means associated with said die for supporting said blank in position to be gripped by said plun'gers when in one position, and when in the other position to support the incoming blank and hold it out of engagement therewith until the ejection of the preceding blank.

8. A machine of the character described including means for feeding a strip of paper into the machine, a blank cutting shear mounted on said machine for cutting blanks from said strip of paper, means for forming and shaping the blanks, a cam shaft, means for rotating said cam shaft, a cam on said,

shaft for actuating said cutting means, a rocker arm mounted on said machine for actuating said forming means, a cam on said cam shaft for actuating said rocker arm, means for controlling the intermittent feeding of the paper sheet to the machine whereby'it will be arrested in its feeding during the cutting operation thereof, and a cam on said cam shaft for controlling said feed control means whereby the feeding, cutting and forming means will be actuated in timed relation with each other.

9. A machine of the character described in cluding means for feeding a paper sheet into the machine, a plurality of blank cutting shears mounted on said machine for cuttting blanks therefrom, means associated With said blank cutting shears for receiving the blanks directly therefrom, shaping and forming the same, means for heating said shaping and forming means for assisting in the forming of the paper, and a water jacket positioned intermediate said shaping and forming means and said cutting means for preventing the greater part of the heat from reaching said cutting means.

10. A machine of the character described including means for feeding a paper strip into the machine, a plurality of cutting shears positioned in staggered relation to each other for cutting blanks from the sheet of material and permitting them to drop therefrom, a forming and shaping die mounted on said machine for each of said shears and positioned below the same for receiving the paper blanks dropped therefrom, guide members mounted on said machine for guiding the blanks from the shears to their respective dies, means associated with said dies for receiving and positioning the blanks preparatory to being pressed therein, and means for actuating said shears and dies in timed relation with each other.

11. A machine of the character described including means for feeding a paper strip into the machine, a plurality of blank cutting shears mounted on said machine, means for actuating said shears for cutting blanks from said strip, a forming die associated with and spaced below each of said shears, and a plurality of trough-like guides connecting said dies with their respective shears for. guiding the blanks cut by said shears to their associated dies.' t

' 12. A machine of the character described including a substantially vertical face plate,

a plurality of shears mounted on said ma chine and associated with said face plate for cutting blanks from a paper strip fed therein, a forming and shaping die for each shear mounted below their respective shears in position to receive said blanks as' they are dropped therefrom, means for guiding said blanks to their respective dies, and means for supporting said blanks and withholding them from their respective dies until the blank being formed therein has been discharged.

13. A machine of the character described including a substantially vertical face plate, a plurality of shears mounted on said machine and associated with said faceplate for cutting blanks from a paper strip fed therein, a forming and shaping die for each shear mounted below their respective shears in position to receive said blanks as they are dropped therefrom, means for guiding said blanks to their respective dies, and means for supporting said blank in position to be engaged and formed by its respective die when in one position, and when in another position permit the formed blank to be discharged therefrom while supporting and withholding from said die the next succeeding blank.

14. A machine of the character described including means for feeding a paper strip into the machine, a plurality of blank cutting 5 shears mounted on said machine in position toengage and cut blanks from said strip, a plurality of forming dies associated therewith for engaging and forming said blanks, means for discharging said formed blanks therefrom, and means associated with said feeding means for engaging and bending the paper strip and causing it to pass out of line with said cutting shears and dies whereby the normal curl of the strip will be removed so as to permit it to enter said machine and be engaged by said "dies in a substantially flattened condition. v Q 15. A machine of the character described including means for feeding a paper strip into shears whereby the normal curl of the paper will be removed therefrom so as to permit it to enter the machine and be engaged by said shears in a substantially flattened condition.

In witness whereof, we have hereunto affixed our signatures.

GEORGE A. BELL. JOHN H. CARSON.

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