US1904958A - Glassware forming machine - Google Patents

Description

April 18, 1933. D SOUBIER 1,904,958

GLAS SWARE FORMING MACHINE Filed March 25, 1930 4 Sheets-Sheet 1 40 v as as 57 April 1933- I D. SOUBIER 1,904,958

GLASS WARE FORMING MACHINE Filed March 25, 1930 4 Sheets-Sheet 2 April 18, 193:; D, SOUB I 1,904,958

GLASSWARE FORMING MACHINE Filed March 26, 1930 4 Sheets-Sheet 3 April 18, 1933- L. D. SOUBIER 1,904,958v

GLASSWARE FORMING MACHINE Filed March 26, 1930 v 4 Sheets-Sheet '4 102 .9 ill Patented Apr. 18, 1933' I UNITED STATES" PATENT OFFICE LEONARD D. SOUBIEE, OI EOLEDO, OHIO, ASBIGNOR T OWENS-ILLINOIS GLASS COMPANY, A COBZEORATION OF OHIO GLASSWABE FORMING MACHINE Application filed larch 26, 1930. Serial No. 438,941.

The present invention relates to improvements in glassware forming machines and particularly to machines in which articles of glassware are partially formed in molds on one table and then transferred to finishing I molds mounted on a support separate from .said table, for final shaping.

An object of the present invention is the provision of an improved machine of the 13 above character, wherein the finishing molds are mounted on an endless chain or the like carrier which moves the finishin molds in succession past blank transfer, b owing and discharge stations. To this end, an endless chain is arranged to move in a horizontal plane in timed relation to movements of an annular series of blank forming units disposed in proximity to and brought. in succession to the blank transfer station. Both the endless chain carrying the finishing molds and the blank forming units move continuously, thereby providing for maximum production of glassware and reduction of wear and strain on the operating mechanism.

Another object is the provision in a machine of the above character, of novel means for transferring blanks from blank forming g units to finishing mold units in which the molds are mounted on an endless chain or similar carrier. To this end the blank forming units include neck molds adapted to move into position over and in register with the finishing molds and travel therewith a sufiicient distance to allow transfer of blanks or parisons suspended from the neck molds, to the finishing molds, without distortion.

Other objects will be apparent hereinafter.

In the drawings:

Fig. 1 is a plan view diagrammatically il lustrating my invention.

Fig. 2 is a vertical sectional elevation showing the blank mold and finishing mold at the blank transfer station. 7

Fig. 3 is a plan view showing one of the blank mold tables and a portion of the finish: ing mold unit.

Fig. 4 is a fragmentary sectional view taken substantially alongthe line IVIV of Fig. 5.

Fig. 5 is a fragmentary plan view of one end of the finishing mold unit.

Fig. 6 is a front elevation of one of the finishing mold groups or heads.

Fig. 7 is a sectional elevation taken \along the line VII-VII of Fig. 6.

Fig. 8 is a detail sectional view, showing the valve mechanism for controlling the supply of air under pressure.

Fig. 9 is a vertical sectional view of one of the blowing heads which co-operates with the finishing molds in expanding the blanks or parisons.

, In more or less general terms, the illustrated embodiment of my invention includes an annular series of blank forming units rotating continuously about a vertical axis past charge gathering and blank transfer stations. Each unit comprises a partible body blank mold and a partible neck mold, preferably,

but not necessarily, of the type employing suction or .vacuum in obtaining mold charges from a supply body of molten glass. Any conventional or preferred means may be employed to operate these molds and other mechanism associated therewith, so that said molds ather charges of molten glass at the chargmg station and then transfer the glass, in the form of blanks or parisons, to partible finishing molds at said transfer station. The finishing molds are mounted on an endless chain trained over a pair of horizontally spaced sprockets and moving continuously in a substantially horizontal plane. The blank transfer station is arranged ad- ;acent one sprocket and the article dischargmg station in proximity to the other sprocket. Accordingly, blanks are placed in the finishing molds at the transfer station, and while traveling to the discharging station are expanded to their final shapes. The finishin molds then open and eject the finished articles. p

More specifically, the machine comprises an annular series of blank forming units 15 rotatable continuously about a vertical axis past mold char g and blank transfer stations G and T respectively. These blank formin units 15, each comprising a partible body blimk mold 16 .and a cooperating neck crumed upon a horizontal hinge pin 22. 'One' arm of the bell crank lever carries a cam roll 23 which moves over. stationary cams 24 shaped to rock the bell crank lever at regular time intervals. Such rocking of the bell crank lever alternately raises and lowers the body blank mold 16 so that it may clear the rim of the furnace extension 25 (Fig. 3), dip into the molten glass in said furnace extension to gather mold charges and then, following the charging operation, resume an upright position in advance of arrival at the blank transfer station T. The body blank mold 16 is alternately opened and closed by a stationary cam 26 operating through a slide 27 and arms 28 which are suitably connected to the slide, said arms supporting the body blank mold sections. These arms are pivoted to vertical hinge pins 28 on the bell crank lever 21. The neck mold 17-is mounted for radial movement relative to the/corresponding body blank mold 16, primarily for the purpose of carrying blanks or parisons to a position radially outward from said body blank mold at the transfer station T. Such projection of the neck mold 17 forms an important part of the blank transfer operation, as will be apparent hereinafter. The neck mold is connected through arms 31 and a hinge pin 32 to a neck mold carrier 29 (Fig. 2), which is slidingly supported on a pair of guide rods 30 extending radially ofthe horizontal arm of the bell crank lever 21. Radial reciprocationof the neck mold car-i rier 29 for the purpose of alternately placing. the neck mold in register'with the body blank and finishing molds is obtained by a stationary cam 33 (Figs. 2 and 3) in which runs a cam roll 34 suitably mounted on the upper side of the neck mold carrier 29. The cam 33 (Fig. 3) is provided with a re-entrant section 35 at the blank transfer station T, which causes the neck molds 17 to travel along a straight path at said station in register I withthe latter during the blank transfer op-' eration.

Each neck mold 17'is opened at regular time intervals by mechanism including a wedge 36 mounted on the lower end "of a holder 37 and adapted to be projected downwardly between the neck mold arms 31 at times. This wedge 36 spreads the arms 31, and, as a result, opens the neck'mold 17 A spring device (not shown) yieldingly holds the neck mold closed. Such. downward movement of the holder37 and wedge 36 is obtained by a cam actuated rocker arm 38 pivoted on a bracket 39 mounted on the-neck mold carrier 29, said rocker arm beings'wung downward- 1y at regular time intervals by means of a stationary cam 40 suitably supported on the neck mold projecting cam 33. This cam 40 is so positioned that it moves the arm 38 downwardly approximately at the time the finishing molds completely close at the transfer station T. Thus, the neck mold l7 positively supports the blanks during closing of the finishing molds, A spring (not shown) lifts the wedge and holder 37 to their uppermost positions after the transfer operation, thereby allowing the neck mold to snap closed. Any preferred means (not shown) may be employed to supply vacuum and air under pressure to the body blank and neck molds for the purpose of gathering mold charges and compacting mold charges, respectively, in the molds. Additional information relative to the particular type of blank forming units illustrated in this application and described above may be had by referring to British patent to ONeill, 315,- 154, dated July 11, 1929. 1

Finishing mold units 45 in the illustrated embodiment of this machine are mounted upon an endless chain 46 trained over a pair of horizontally spaced sprockets 47 suitably supported at the upper ends of vertical shafts 48. These shafts are arranged at opposite ends of an elongated finishing mold carriage and journaled in a series of vertically spaced bearings, including a lower bearing 49 carried by the base plate 20, intermediate bearings 50 formed on a central frame 51 and upper bearings 52 carried by a top'frame 53. Continuous rotary movement is imparted to the endless chain 46 through the provision of driving connection between the rotary blank mold carriage 18 and one of said vertical shafts 48. This driving connection (Fig. 2) consists of a ring gear 54 on the b ank mold carriage 18 driving a pinion 55 fixed to the upper end of a vertical shaft 56. Gears 57 and a horizontal shaft 58 provide connection betweenthe shafts 56 and 48. The drive is such that theblank forming units 15 and finishing mold units 45 are moved in substantially the same .direction at the transfer station T as, and for thepurpose stated heretofore.

The central frame member 51 of the finishing mold carriage (Figs. 2, 4, 6 and 7) is supported on brackets 59 or legs secured to the upper side of the base 20. A continuous bearing plate 60 extends about the margin of the central frame member 51 of the finishing mold under pressure is constantly supplied to the chamber 62 by a supply pipe 63 which connected to any suitable source of supply (not shown). A cam 64 (Figs. 2 and 7) is attached to said central frame member 51, and, as will be apparent hereinafter, controls the vertical positions of the finishing mold bottom plates to be described. A cam 65 (Fig. 8) is mounted on the central frame member 10 51 just above the bearing plate 60 to actuate valve mechanism which controlsoperation of lowing heads for the finishing molds, as will be set forth'presently. The top frame 53 of the finishing mold carriage supports upper and lower cams 66 and 67, the lower, or finishing mold operating cam 67, being shaped to close the finishing molds at the transfer station T and open them just in advance of arrival at the article discharging station D, while the upper or blowing head control cam 66 alternately projects and retracts the blowing heads in timed relation to movements of the finishing molds.

Each finishing mold unit (Figs. 2 and 35 4) includes a artible finishing mold 68 connected throug hinge pin 70 rising from the base 71 of the finishing mold carrier '61. mold carrier is connected through a yoke 72 and vertical hinge pin 73 to the endless sprocket chain 46. A roller 74 mounted on the lower end of the hinge pin 73 constantly rides upon a track 75, or bearing plate, cooperating with an adjacent part 74" in preventing horizontal movement of the finishing mold carrier 61 in a direction transverse to the normal path of travel. Alternate opening and closing of the finishing mold 68 is obtained by means includin a slide 76 mounted in slideways or guides 7 formed on" the adjacent faces of upstanding arms 78 which are carried by the base 71 and comprise part of the finishing mold carrier. This slide 76 is connected at one end through links 79 to the finishing mold arms 69, and at its other end carries a cam roll 80 running in the cam 67. This cam 67 (Figs. 3 and 5) is provided with an angular portion 81, at the transfer station T (Fig. 3), which moves the slide 76 outwardly during substantially the first half of the transfer'period, thereby closing the finishing mold about a blank while it is still positively supported by a. neck mold 17. This cam 67 need, and in fact does, extend only a short distance beyond the transfer station T, because the corresponding blowing head, to be described presently, functions to positively hold the finishing mold closed during the blowing operation. Adjacent to and a short distance in advance of the article ejecting station D, the cam 67 is provided with an angular portion 82 (Fig. 5) which reverses the movement of the finishing mold opening and closing slide 76 so that the 65 finishing mold 68 is opened, leaving the mold arms- 69 to a vertical This finishing finished article standing upright on the bottoz; plate ready to be e ected at said station.

ottom plate 83 (Fig. 4) is provided for each finishing mold 68 to close the lowerend of the mold and shape the bottoms of the articles of glassware. This bottom plate includes a holder 84 in which the bottom plate is adj ustably supported. The holder 84 (Fig. 4

4) is pivoted to a horizontal hinge pin 85 on a bracket 86 which is carried by the base 71 of the finishing mold carrier, said holder being operativelyconnected to a rocker arm 87 by a I c011 spring 88. This rocker arm 87 carries a latter at the transfer station T and allows said bottom plate to tilt at the article ejecting station D for the purpose of discharging the finished articles.

After a blank has been transferred to a finishing mold 68 at the station T and the finishing mold completely closed aboutv the blank, a blowing head 90 is brought into operative position relative to the finishing mold, primarily'for the purpose of introducing air under pressure into the finishing mold to expand the blank to its final shape and secondarily, to positively hold the finishing mold closed during the final blowing operation. The blowing head 90 comprises a piston motor 91 mounted on the outer end of a slide 92 which is slidingly supported in guideways 93 just above the finishing mold opening slide 76. A cam roll 94 at the inner end of the blowing head slide 92 runs in the cam 66' (Figs. 2 and 5), said cam shaped to alternately project and retract the blowing head at regular time intervals. A differential piston motor 95 is mountedin the cylinder of the piston motor 91 and carries a sleeve 96 which projects through the lower open end of said cylinder. The lower end of the sleeve 96 (Fig. 9) is formed with a beveled surface 97 adapted to contact with a similar surface comprising one wall of a channel 98 in the upper end of the corresponding finishing mold 68. Downward projection of the sleeve 96 into engagement with the finishing mold, so that said beveled surfaces contact with each other, positively holds the finishing mold 68 against premature opening under pressure of blowing air. employed in expanding the articles to their final shape.

Means for alternately raising and lowering the sleeve 96 and regulating the supply of air under pressure through said sleeve into the corresponding finishing mold includes a pipe 99 communicating by way of a port 100, with the piston motor cylinder at -a point below the differential piston 95.

The other end of the pipe 99 communicates 45 pipe 110 is suitably connected to the pipe 102 side of the differential piston 95 and normally holds the latter in its uppermost position whereby the sleeve 96 is almost completely enclosed within the piston motor cylinder.

- mold.

Accordingly, the sleeve does not interfere with horizontal movement of the blowing head relative to the finishing mold. Air under pressure is introduced into the upper end of the piston motor cylinder at regular time intervals to move the differential piston 95 downwardly and cause engagement between the sleeve 96 and the corresponding finishing Such movement of the sleeve also in part controls the application of blowing air to the interior of the finishing mold, as will be apparent presently. A supply pipe 102 (Figs. 4, 6, 7, 8 and 9) opens at one end into the upper end of the piston motor cylinder and at its other end into a chamber 103 of a valve box 104. This chamber 103 communicates with the passageway 101 containing air under pressure by way of a valved opening in one wall of said chamber. A valve 105 on a valve rod 115 (Fig. 8) normally closes said opening under influence of a coil spring 106 encircling said rod. The cam 65 referred to heretofore engages a cam roll 107 on the rod 115 at regular time intervals to unseat the valve lO5 and thereby adm1t air under pressure to the pipe 102 and thence to the upper end ofthe cylinder of the piston motor 91. Thus, the differential piston 95 is moved downwardly, causing the sleeve 96 to seat upon the corresponding finishing mold 68. Such downward movement of the piston 95 causes alignment of a port 108 in the sleeve with a port 109 in the lower end of the piston motor cylinder, resulting in flow of air under pressure into the sleeve by way of said ports from a pipe 110. This which leads to the chamber 103, as described above. Release of pressure in the upper end of the piston motor cylinder after each final blowing operation, so that the differential piston 95 may be lifted under pressure of air flowing through the pipe 99, is obtained by means of a relief pipe 111, one end of which communicates with the interior of the cylinder near the upper end of the latter, while itsother end opens into a chamber 112 in the valve box 104. This chamber 112 has a valved opening in one wall, which at times is closed by valve 113 and at other times cooperates with ports 114 (Fig. 8) in providing communication between the relief pipe 111 and the atmosphere. The valves 105 and 113 are mounted on said valve rod 115 which. carries the cam roll 107 referred to heretofore. Thus the valves open. and close in alternation under the influence of the spring 106 and cam 65"and in this manner, cause vertical reciprocation of the difierential piston motor 95, periodieally.

In operation,thebla'nk forming units 15 and finishing mold units 45 (Fig. 3) are moved continuously in the directionsindicatedby the arrows so that at the blank'transfer station T, the units move in substantially the same direction. The re-entrant section 35 of the cam 33 controlling the radial position of the I neck molds 17 at the blank transfer station T insures accurate vertical alignment of the neck and, finishing molds during the blank transfer operation so that the blanks are not in the least distorted or marred. The blanks are positively approximately the first half of the transfer operation and while so heldare enclosed by finishing molds 68 due to outward move-+1 ment of the finishingmold closing slides 7 6 the .in register with the corresponding finishing mold. Air under pressure is then introduced into the upper'end of the piston motor 91 through the pipe 1.02 'so that the sleeve 96 is lowered into engagement with the upper end of thecorres'ponding finishing mold. The valve 105 is then opened by' means of the cam 65 andair under pressure directed into the finishing mold through the pipe 110 and aligned ports 108 and 109,- causing final expansion of' the article of glassware. This final expansion of the article is followed by lifting of the blowing sleeve 96 andretraetion of the entire-blowing head 90 to a position spaced inwardly from the finishing mold. The finishing mold is'now opened by means of the cam 67' operating through the slide 76,

thereby leaving the finished article in an upright position on the bottom plate 83. At the article discharging station D, an angular portion 64 of the cam 64 allows the bottom plate 83. to tilt and thereby eject the finished article into a chute or other receiver (not shown). The finishing molds are held open until they return to the blank transfer station T where they again enclose the blanks or partially formed articles of glassware and the operation above described is repeated. While the finishing molds are open, they will of course be cooled and thereby be properly conditioned to receive other blanks for final QXPHIISIOH.

Modifications may be resortedto within held by the neck molds during;

the s irit and scope of the appended claims. at I claim is:

1. In a glassware formingmachine,the combination of a series of finishing molds moving in a closed horizontal path past a blank transferring position, means for placing blanks in the finishing molds at said positions, supporting means for the finishing molds including a continuous upwardly facing bearing plate expanding the blanks in the latter, means for supplying air under pressure to the blowing heads periodically, valve individual to the finishing molds for controlling flow of air under pressure to the blowing heads, and a cam carried by the bearing plate for actuating the valves in succession.

2. In a glassware forming machine, the combination of a series of finishing molds moving in a closed horizbntal path past a blank transferring position, means for placing blanks in the finishing molds at said positlon, supporting means for the finishing molds including a continuous upwardly facing bearing plate extending parallel with the ath of travel of the finishing molds, carriers individual to the finishing molds slidingly supported on said plate, an endless chain connecting the series of finishing mold carriers, and means for continuously moving the chain to thereby cause the finishing molds to travel in succession past said transfer position.

3. In a glassware forming machine, a series of 'partible finishing molds arranged for continuous movement in a horizontal path, a major portion of which extends along two parallel straight lines, a continuous bearing plate supporting the molds, a tiltable bottom plate for each mold, a blowing head arranged in a plane above and 1nd1- vidual to each mold, and operatmg means individual to the mold bottom plate and blowing head for operating them in a predetermined order.

4. In a glassware forming. machine, a series of'finishing mold units movable m a closed horizontal path, a major portlon of which extends along two parallel stralght lines, a continuous bearing plate support ng said units, each unit comprising a non-tilting partible mold, a tiltable bottom plate for the mold, a blowing head individual to the mold, and operating mechanism 1nd1- vidual to the mold, bottom plate, and blowing head, for operating them in a predetermined order.

5. In a glassware forming machine, a series of finishing mold units movable in a closed horizontal path, a major portion of which extends along two parallel straight lines, a continuous bearing plate supporting said units, each unit comprising a non-tilting artible mold, a tiltable bottom .plate for t e mold, a blowing head individual to the mold, means for moving .the units in succession past blank transferring, blowing and discharging positions, means for closing the mold about a blank at the blank transferring position, means for projecting the blowing head and causing operative positioning thereof with respect to the mold at said blowing position, and means for opening the mold and tilting the bottom plate at the discharging position.

6. In a glassware forming machine, a series of finishing mold units movable in a closed horizontal path, a major portion of which extends along two parallel straight lines, a continuous bearing plate supporting said units, each unit comprising a non-tilting partible mold, a tiltable bottom plate for the mold, a blowing head individual to the mold, means for moving the units in succession past blank transferring,vblowing,

ing the mold about a blank at the blank transferring position, means forprojecting ,and discharging positions, .meansvfor clossaid blowing position, and means for open- 4 ing the mold and tiltingthe bottom plate at the dischargin position, said means for operating the mo d, blowing head, and bottom plate including a series of superposed stationary cams.

7. In a glassware forming machine, a series of finishing mold units movable along a closed path, a major portion of which extends along two parallel straight lincs past blank transferring, blowing, and article discharging positions, a continuous bearing plate supporting said units, a chamber provided in said bearing plate to contain a supply of air under pressure, each finishing mold" unit comprising a carrier slidingly supported on said plate, a finishing mold on said carrier, a tilting bottom plate individual to the mold and supported on the carrier, :1.

blowing head on the carrier, and means in- 1 carrier, a tilting bottom plate individual to the mold and supported on the carrier, a blowing head on the carrier, means including an automatically controlled valve for conducting air under pressure from said chamber to the blowing head, and cam actuated devices individual to the mold, bottom plate, and blowing head for operatively positioning them in a predetermined order.

9. In a glassware forming machine, a series of finishing mold units movable along a closed path, a major portion of which extends along two parallel straight lines past blank transferring, blowing, and article discharging positions, a continuous bearing plate supporting said units, a chamber provided in said bearing plate to contain a supply of air under pressure, each finishing mold unit comprising a carrier slidingly support ed on said plate, a finishing mold on said carrier, a tilting bottom plate individual to the mold and supported on the carrier, a blowing head on the carrier, a valve chamber provided in said carrier and coimnunicating at regular time intervals with said air chamber, conduits connecting the valve chamber and blowing head, and a cam actuated valve in said valve chamber operable at regular time intervals to establish communication between said air chamber and conduits.

10. In a glassware forming machine, a series of pa'i'tible finishing molds arranged for movementalong a closed horizontal path I a major portion of which is non-circular, a continuous bearing plate supporting the molds, a tiltable bottom plate for each mold, a blowing head arranged in a plane above the'molds, and means for operating the blowing head and bottom plate in a predetermined order.

11. In a glassware forming machine, a series of finishing mold units movable in a closed horizontal path a major portion of which is non-circular, means providing a continuous-bearing surface supporting said units, each unit including non-tilting partible molds, a tiltable bottom late for each mold, a blowing head, means or moving the units in succession past blank transferring, blowing and discharging positions, -means for enclosing a blank in a finishing mold unit at the blank transferring position, means for operatively positioning the blowing head at the blowing-position, and means for opening the mold and tilting the bottom plate at the discharging position. I

Signed at Toledo, Ohio, this 21 day of Marchl930.

' LEONARD D. SOUBIER.

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