US1885302A - Glass working apparatus - Google Patents

Description

Nov. 1, 1932.

E. E. suck GLASS WORKING APPARATUS 6 Sheets-Sheet 1 Filed March 24. 192? v llll ' INVENT w a.

Nov. 1, 1932. 5 5, SLICK 4 1,885,302

GLASS WORKING APPARATUS Filed March 24. 1927 I e Sheets-She et 2 Nov. 11,1932. E. E. SLlCK GLASS WORKING APPARATUS Filed March 24. 1921' a Sheets-Sheet 3 NOV. 1, E E SLICK GLASS WORKING APPARATUS Filed March 24. 192 6 Sheets-Sheet 4 NOV. 1, 1932.. SUCK 1,885,302

GLASS WORKING APPARATUS I 7 Filed March 24, 192 6 Sheets-Sheet 5 55 v J I I v i;l (J1 v \[WI WI IL/HIWI 28 I V IMJ Wd LM ZM, MZZMHM Nov. 1, 1932. E E. SLICK 1,885,302

I I GLASS WORKING APPARATUS Filed March 24, 192' 6 Sheets-Sheet 6 W gf/ENTQB A; .W

Patented Nov. 1; 1932 PATENT or ice EDWIN E. SLICK, OF PITTSBURGH, PENNSYLVANIA i GLASS WORKING APPARATUS I Application filed March 24, 1927. Serial No. 177,919.

The present invention relates broadly to the art of glass working and more particularly to an apparatus adapted to operate upon successive gathers or charges of glass to effect a shaping thereof. Certain features of the invention are useful in connectlon with the handling ofmaterials other than glass, and it will therefore be understood that if desired, the apparatus may be utilized with such materials.

It is customary in the art to which the present invention relates, to provide glass working apparatus Comprising a relatively movable mold carrier and shaping elements adapted to'elfect a shaping operation either by pressing, blowing, or both. It is one of the objects of'the present invention to provide an improved apparatus embodying such relatively movable mechanisms and effective 29 for producing in rapid successiomarticles of the desired characteristics.

Another object of the present invention is to provide super-imposed carriers of difi'erent one of the carriers supporting the molds and the other of the carriers supporting the shaping elements, the carriers being so arranged that at predetermined time intervals the molds and elements may travel in the same path irrespective of the eccentric relationship of the carriers.

Still another object of the present invention is to provide a plurality of shaping elements adapted to be brought into use successively with successive molds, the shaping elements being fewer in number than the dimensions and movable about difierent axes,

such as plungers, blow heads or the like, and is not used as a term of limitation.

In the accompanying drawings, there are shown for purposes of illustration only, certain preferred embodiments of the present invention, it being understood that the drawingsdo not define the limits of my invention as changes in the construction and operation disclosed therein may be made 'without departing either from the spirit of the invention. or the scope of my broader claims. In the drawings: Fig. 1 is a top plan view of one form of apparatus constructed in accordance with s the present invention;

Fig. 2 is a side elevation of the apparatus shown in Fig. 1; 1

Fig. 3 is a detail elevational view illustrating the operation of one form of delivery mechanism for the glass;

Fig. 4 is a vertical sectional view on the line IV-IV of Fig. 1 looking in-the direc tion of the arrows;

Fig. 5 is a top plan view on an enlarged scale illustrating the shear mechanism, its operating means, and the relationship of the superimposed carriers;

Fig. 6 is a partial top plan view of the carrier for the shaping elements;

7 is a view partlyin plan and partly in section, illustrating the cooperation of the shaping elements and molds.

Fig. 8 is a top plan view of the inner control cam for the shaping elements;

Fig. 9 is a side elevation of the cam shown in Fig. 8;

Fig. 10 is a side elevation of the outer control cam looking toward the inner face thereof;

Fig. 11 is a top plan view of the shears showing the same closed for shearing;

Fig. 12 is a view similar to Fig. 11 showing the shears innormal open position;

Fig. 13 is a sectional view along the line XIII-XIII of Fig. 11;

Fig. 14 is a detail sectional view illustrating a modified form of discharge for the formed articles; andf Fig. 15 is a detail view partly in. section wardly therefrom, is a; pedestal 4 through which extends a central shaft 5. Rotatably mounted with respect to the pedestal and shaft, is a carrier in the form of a table 6, which table is provided on its upper surface with a plurality of molds 7 of such construction and contour as to effect the desired shaping operation on the plastic material delivered thereto. Secured to the carrier 6 in any desired manner is a ring gear 8 herein illustrated as meshing with a pinion 9 driven from a worm wheel 10 in the gear housing 11. The worm wheel is in turn driven by a worm 12 through the frictional driving connection 13 including a'gear 14 meshing with the pinion 15 on the armature shaft of asuitable motor 16. By reason of this construction, it will be apparent that as the motor is operated the table will be turned at the desired speed, it being apparent that a variable speed motor may be utilized to insure a speed range in the movement of the carrier.

lso secured to the base 2 and projecting upwardly therefrom is a bracket 17 carrying a roller 18 in such position as to underlie the periphery of the carrier 6 and maintain the same in the desired plane while the plastic material is being shaped in the molds.

Extending between the upper end of the shaft 5 and the upper end of a supporting rod 19 carried by the bracket 17, is a cross head 20. Suitably mounted within this cross head is a shaft 21 constructed to cooperate at its intermediate portion'with an inner cam 22 and at its lower portion with a second carrier 23. -It will be noted that the carrier 23 is of much smaller diameter than the carrier 6 and that it is rotatable about the axis of the, shaft 21 eccentrically disposed relative to the shaft 5. I I

The secondary carrier 23 is rovided with an upper flange 24 and a lower ange 25. The

upper flange 24 is formed with a series of equidistantly spaced elongated openings 26 through which openings project bushings 27 having mounted therein lunger heads 28. These plunger heads are sliaped at their upper ends to roll against the peripheral face 29 of the inner cam 22, and are formed with an enlargement 30 suitably beveled to effectively cooperate with the upstanding flange 31 on the inner cam. This flange as will be apparent more particularly from Figs. 8 and 9 of the drawings, has a broken away portion 32 which permits the plunger heads 28 to drop downwardly when. this point is cam around which it travels until it drops from the end 34: into'the depression 32. Ad-

jacent the depression 32 the inner cam 22 has a peripheral portion 35 formed about the longitudinal axis of the shaft 5 as a center.

Carried by the cross head 20 and projecting downwardly from the lower side thereof,

in such position as to lie substantially opposite the peripheral portion 35 of the inner cam 22, is an outer cam 36. This outer cam has an inner face 37 curved about the axis of the shaft 5 as a center, and therefore lying in concentric relationshipto the peripheral portion 35 on the inner cam 22. The path between the cams is symmetrically disposed with respect to the center line of the molds 7 whereby during the rotation of the carrier 6, the molds successively pass below the cam path formed by these cams and in line therewith. It is during this period that the plunger heads 28 are permitted to low-er and bring the shaping elements carried thereby into cooperative relation with the plastic material in the respective molds. During the maintenance of this cooperative relationship,

the parts continuously travel, such a travel fined by the upper earrier and travel in the.

path determined by the cams, which path is concentric with the path of travel of the molds 7. i

The operation of the apparatus is such that the main carrier rotates in the direction of the arrow of Figs. 1 and 7 while the second carrier 23 rotates'in the direction of the arrow B of these figures. During this rotation, the plunger heads 28 being in contact with the outer periphery 29 of the inner cam 22 and the enlargements 30 on the plunger heads being in travelling contact with the cam surface 31, the plunger heads are continuously rotated during this travel. lVhen they reach the point 34, they are permitted to drop down.

Thereafter, they remain in their lowered position until the enlarged portions 30 of the heads 28 engage the lifting portion 38 of the outer cam 36. Continued rotation of the respective carriers causes the enlargements 30 I T than would otherwise be the case.

In order to insure proper continued registration or cooperative relation of the respective carriers such that the proper relationship is always maintained therebetweeri, the lower flange is preferably-shaped in the form of a star wheel as will be clearly ap-. parent from Fig. 1, thereby providing a series of teeth 39 with intervening recesses 40.

a press machine, and therefore'these elements are in the form of press heads 41. Each press head, as illustrated in detail in Fig.4, has an upstanding stem 42 fitting in a suitable recess in its corresponding plunger head 28, the parts being held in assembled relation by a bolt 42a. Surrounding each of the stems 42 and shaped to embrace its cooperating press head 41, is a movable mold part 43 comprising a downwardly projecting flange 4:4; adapted to fit over the upper end of each of the molds 7 and thereby define a confining cavity for the glass article G being formed. Each mold part 43 is preferably urged downwardly bymeans of a compression spring 45, these springs being operative as will be clearly apparent from the drawings for permitting a relative movement between the press heads 41 and the mold parts 43.

lVith the plunger heads in their lowered positions, the mold parts 43 are in the cooperative relation illustrated in section in Fig. i with respect to the molds 7. The travel of the carriers brings the plunger heads successively under a pressure roller 45a having trunnions 46 mounted in bearings =17 which are urged downwardly by springs 48. 'By reason of this construction, as the plunger heads pass beneath the pressure roller, the press heads are urged downwardly to exert the desired pressure on the plastic material within the mold cavities formed by the molds 7 and the mold parts-43.

It will be apparent to those skilled in the art, that the plastic material may be delivered to the molds in any desired manner,

either by hand orby means of a suitable feeder. In the embodiment of the invention illustrated in the accompanying drawings, there is disclosed a portion of a glass furnace F having a suitable outlet opening through This precludes possiwhich the glass gasindiated in Figs. 3, 13

and 15, is adapted to issue'inthe form of either a continuous or intermittent stream.

Suitably located adjacent the discharge orifices of the furnace is'suitable severing means for the glass adapted to form charges C therefrom as indicated in the figuresof the drawings referred to. .These severing means may comprise shear blades 49 having V- shaped cutting portions 50 so arranged as to effect the "conclusion of the'shearing operation at substantially the center line of the stream of plastic material. The shear blades may be piyotally connected by a pin 51 which also forms a pivotal mounting for the blades. This pivotal mounting is so located that the shearing ends of the blades are relatively long while the opposite ends 52 are relatively short, The ends 52 may be provided with pins 53 projecting therefrom in such manner as to engage cam slots 54 in a cross head 55. The cross head is mounted for reciprocation in a suitable guide-way 56, and is adapted to be operated by the piston rod 57 connected to a suitable piston 58 in a fluid pressure cylinder 59., This fluid pressure cylinder may be provided with suitable connections 60 and 61 in the opposite ends thereof adapted to. al I ternately serve as inlets and exhaust ports. These connections lead to opposite sides of a four-way valve 62 as illustrated in section in Fig. 5 The valve is provided with an inlet 63 and with an exhaust 64. lVith the parts in the position of Fig. 5, fluidunder pressure will be admitted to the connection 61 to effeet movement of the piston to the right as viewed in the drawings, the parts being shown in Fig. 5 as having just completed this travel. The next quarter movement of Ashe valve will be effective for passing fluid under pressure from the inlet 63 to the connection 60 while permitting the connection 61 to exhaust. The valve is adapted tobe operated to effect 90 movements thereof by -means of a. stem 65, Fig. 6 carrying a starwheel 66 at its lower end adapted to be engaged by projectionsfi? on the secondary carrier 23. These projections 67 are preferably formed on'a ring 68 which is adj ustably held in position by a set screw 69, whereby the ring 68 may be moved circumferentially of the secondary carrier'to slightly change the relationship between the projections 67 thereon and the shaping elements. Such an adjustment is desirable inasmuch as it permits the time of shearing to be varied with respect to the position of the carriers, and thereby accuratelycontrol the time of delivery of the sheared charges.

These charges may be delivered to the molds 7 in any desired manner, different embodimentsof delivery chutes being illi trated respectively in Figs. 3 and 15. In Fig. 3 there is shown achute 70 having a pivotal mounting 71 adjacent its upper end whereby it is adapted to swing from the dotted line the projection 72 and cause the chute 70 to temporarily move at. an instantaneous speed equal to the speed of travel of thecarr'ier and with the discharge of the chute in line with a mold cavity. With such a construction, proper delivery of the glass to the molds, is

. insured.

With the form of the invention of Fig. 15, the chute 7 0 has a pivotal mounting 71' at its upper end and an adjustable connection 7 4 at its lpwer end whereby it is held in predeter-.

purpose inFigs. 4 and 14 respectively. Re-

.ferring to-Fig. 4, it will be noted that each of the molds 7 has a movable portion 5 projecting downwardly below the carrier 6 in such manner as to engage a cam 76 fixedly mounted on a racket Z7 projecting upwardly from the has 2. This cam tends to raise the plungers and thereby lift the formed. articles G out of the cavities in the molds 7. In this position they may be mechanically engaged by a suitable transfer device 7 8 which may be actuated by the lugs 73 before referred to to effect movement from the full line position of Fig. i to the dotted line position.

With certain types of ware, however, I have found it desirable to utilize an off-take device of the character shown in Fig. 14 and comprising an air blast nozzle 78 adapted to subject the formed ware to a blast of air effective for lifting the same as indicated diagrammatically in Fig. 14 and effect discharge through a suitable trough 79.

It will be understood that suitable means, not shown, but such as customarily provided in the art for delivering air for cooling purposes to theinolds and to the plastic. material therein, may be provided at suitable points.

.While the particular construction of'the severing means constitutes no important part of the present invention, the mechanism herein shown possesses desirable characteristics, and is specifically claimed in my copending application Serial No. 266,601 filed April 2, 1928. By reason of the construction shown, a complete shearing cycle comprising a closing, shearing, and opening movement is effected by a single stroke of the piston 58.

The return stroke in each case effectsa similar complete cycle. This insures a much more rapid shearing operation than has heretofore been obtained with apparatus in which a movement of the piston in one direction was relied upon for accomplishing the closing movement of the shears and the shearing operation, while a stroke in the opposite direction was relied upon to open the shears.

The present invention lends itself to the rapid formation of articles from plastic material while insuring accuracy of registration of the parts at all time. A high speed of production isobtained by reason of the use of continuously movable carriers whereby the time ordinarily lostwhere an intermittent rotation is necessitated, is saved and devoted to suitable shaping operations.

Other advantages of the present invention arise from the provision of a plurality of car riers mounted in superimposed relationship and of diflerent diameters where the axes of the respective carriers are eccentric one with respect to the other and compensating means is provided to permit the parts of the respective carriers to travel in a common path during a part of their travel.

Further advantages arise from the provision of cooperating shaping elements carried by superimposed carriers of different diameters eccentrically mounted and constructed to permit cooperative relation of the shaping elements of the respective carriers during movement thereof.

Still further advantages arise from the provision of shaping elements adapted to move vertically during rotational movement thereof in combination with lifting means on one cam for effecting the lifting of the shapj inv elements and means on another cam for maintaining the elements in lifted position.

Still further advantages of the invention paths having different radii of curvature during different portions of the cycle in combination with means for effecting rotation of the shaping elements to insure uniformity of wear thereof. I claim:

1. In a plastic shaping apparatus, a plurality of rotatable carriers, one of said carriers being of smaller diameter than the other and vertically off-set relatively thereto, said carriers being rotatable about stationary eccentric axes, shaping elements on the respective carriers, and means for causing the shaping elements on the carrier ofsmaller diameter to periodically travel concentrically to the path of travel of the elements on the carrier of larger diameter.

2. In a plastic shaping apparatus, a plurality of rotatable carriers, one of said carriers being of smaller diameter than the other and vertically oiI-set relatively thereto, said tive carriers, and means for causing the shaping elements onthe carrier of smaller diameter to periodically travel concentrically to the path of travel of the elements on the carrier of larger diameter, one of said carriers being driven by the. other.

3. In a plastic shaping apparatus, a plurality of carriers movable about separate axes and axially superimposed, a plurality of shapingelements on each of the respective carriers, and means for moving one of the carriers by the other only through the medium of the shaping elements on one of said carriers.

4. In a plastic shaping apparatus, a carrier of maj or diameter having a plurality of shaping glementsthereon, a carrier of minor diameter vertically spaced with respect to said first mentioned carrier and having shaping elements thereon, each carrier having a single axis only about which it is movable and means periodically operable for causing the shaping elements of the respective. carriers to travel in a common path.

5. In a plastic shaping apparatus, a carrier of major diameter having a plurality of shaping elements thereon, a carrier'of minor diameter vertically spaced with respect to said first mentioned carrier and having shaping elements thereon, each carrier having a single axis only about which it is movable and means periodically operablefor causing the shaping elements of the respective carriers to travel in a common path, said means comprising stationarily mounted means adapted to temporarily change the path of travel of the elements on at least one of said carriers.

6. In a plastic shaping apparatus, a carrier-cf major diameter having a plurality of shaping elements thereon, a carrier of minor diameter vertically spaced with respect to said first mentioned carrier and having shaping elements thereon, and means periodically operable for causing the shaping elements of l the respective carriers to travel in a common path, said means comprising a cam path cooperatlng wlth the elements on the carrier or 'minor diameter for changing the path of travel of such elements.

7. In a plastic shaping apparatus, a main carrier, a secondary carrier above the same, eccentrically disposed stationary axes about which the carriers rotate, shaping elements mounted on ,each of said carriers, the shaping elements of one of the carriers being movable radially thereto and means for periodically causing said shaping elements to move in a common path.

8. In a plastic shaping apparatus, a main carrier, a secondary carrier above the same, eccentrically disposed stationary axes about which the carriers rotate, shaping elements mounted on each of said carriers, the shaping tive for changing the path of travel of the I shaping elements of the secondary carrier to cause it to conform to'the-path of travel of the elements on the main carrier.

9. In a glass workingmachine, am'ain axially mounted carrier having molds thereon, a second carrier mounted on a fixed axis superimposed in an axial and otlsetdirection to the first carrier and having shaping elements thereon adapted to cooperate with said molds and normally moving in a different path, the number of molds exceeding the number of shaping elements, and means operative at predetermined points in the travel of the respective elements for causing them to move in a common path.

'10. In a plastic shaping apparatus, a carrier movable only about a single axis, a plurality of shaping means carried thereby, a second carrier eccentrically mounted relative to the first carrier and movable only about a single axis, shaping means movabl mounted on the second carrier for cooper tion with the first-named shaping means, ano

rier movable only about a single axis, a plu rality of shaping means carried thereby, a second carrier eccentrically mounted relative to the first carrier and movable only about a single axis, shaping means carried by the second carrier for cooperation with the firstnamed shaping means, and means for confining the shaping means when in material shaping relation in identical arcuate paths of substantial length.

12. In a plastic shaping apparatus, a carrier movable only about a single axis, a 1114- rality of shaping means carried thereby, a second carrier eccentrically mounted relative to the first carrier and movable only about a single axis, shaping means carried by the second carrier for cooperation with the firstnamed shaping means, and concentric guiding surfaces associated with said carriers for.

controlling the movement of the shaping means when in material shaping relation.

13. In a plastic shaping apparatus, a carrier movable only about a single am's, a plurality of shaping means carriedthereby, a second carrier eccentrically mounted relative to the first carrier and movable only about a single axis, shaping .means carried by the secondcarrier for cooperation with the firstnamed shaping :means, and concentric guiding surfacesassociated with said carriers for controlling the movement of, the shaping means when in material shaping relation, one

of said guiding surfaces constituting a camming surface.

14. In a plastic shaping apparatus, a rotatable carrier mounted on a fixed pivot, a plurality of shaping means carried thereby, a second carrier eccentrically mounted relative to the first-named carrier on a stationary pivot, shaping means carried thereby for cooperation with the first-named shaping means and movable at substantially the same peripheral speed, and means for causing the shaping means to traverse identical arcuate paths of substantial length while in material shaping relation.

- 15. In a plastic shaping apparatus, a plurality of rotatable carriers, means for imparting continuous rotation to one of the carriers about a fixed pivot, one of said carriers being of smaller diameter than the other and vertically offset relative thereto, a stationary pivot for said smaller carrier, shaping elements on the respective carriers, and means for causing the shaping elements on the carrier of smaller diameter to periodically travel along the arcuate path of travel of the elements on the carrier of larger diameter for a substantial distance.

16. In a plastic shaping machine, a continuously driven carrier having a working surface extending in substantially a horizontal plane, upwardly opening shaping elements carried thereby, a second separately supported carrier movable in a different path from that of the first-named carrier and in timed relation thereto, vertically movable shaping elementscarried by the second car rier for cooperation with the first-named shaping elements, means for supplying glass gathers to successive shaping elements on one of the carriers, means for bringing successive shaping elements on one carrier into engagement with the shaping elements on the other carrier for shaping the gathers, means for maintaining said elements in vertical alinement during their travel through a substantial distance, and means for automatically removing the shaped articles.

17 In a plastic shaping machine, a continuously driven horizontally extending car-- rier', shaping elements carried thereby, a second carrier movable in a difi'erent-and independent path than the first-named carrier and in timed relation thereto, shaping ele ments carried by the second carrier for cooperation with the first-named shaping elements, means for supplying glass gathers to successive shaping elements .on one of the carriers, means for bringing successive shapv K movable in substantially a horizontal plane, shaping elements carried thereby, a second carrier movable in a different path from that of the first-named carrier and in timed relation thereto, means for separately supporting said carriers, shaping elements carried by the second carrier for cooperation with the first named shaping elements, means for supplymg glass gathers to successive shaping elements on one of the carriers, means for bring- .ing successive shaping elements on one carrier into engagement with the shaping elements on the other carrier for shaping the gathers, means for maintaining said elements in vertical alinement during their travel through a substantial distance, and means for automatically removing the shaped articles.

In testimony whereof I have hereunto set my hand.

EDWIN E. SLICK.

ing elements on one carrier into engagement with the shapingelements on the other carrier and moving in the same arcuate path therewith for a substantial distance while shaping a gather, and means for automatically removing the shaped articles.

18. In a plastic shaping machine, a carrier

Images