US1875796A - Glassware forming machine - Google Patents

Description

Sept. 6,

R. G. ALLEN GLASSWARE FORMING MACHINE Filed Feb. 18, 1929 4 Sheets-Sheet 1 iillllll IIIIIII MW on Sept. 6, 1932. R. G. ALLEN 1,875,796

GLASSWARE FORMING MACHINE Filed Feb. 18, 1929 4 Sheets-Sheet 2 abbozwaq I Sept. 6, 1932. R, G ALLEN v 1,875,796

GLASSWARE FORMING MACHINE Filed Feb. 18. 1929 4 Shets-Sbeet 4 Patented Sept. 6, 1932 1 UNITED STATES PATENT OFFICE,

RUSSELL G. ALLEN, OF TOLEDO, OHIO, ASSIGNOR TO OWENS-ILLINOIS GLASS COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO OLASSWARE FORMING MACHINE Application filed February 18, 1929. Serial No. 340,686.

The present invention relates to improvements in machines for forming hollow glassware, such as bottles and jars, and more particularly to the mechanism by which the article shaping molds are moved between the several positions they assume during production of said glassware. I

An important object is to provide novel means whereby the movements of the finishing mold between the blank transfer and article discharging positions may be regulated and controlled with unusual accuracy. To this end there is provided cam actuated differential gearing, which, in the present disclosure, and for the purpose of illustration, replaces the usual serpentine track employed to raise and lower the mold carriers. 7

Another important object is to provide novel means to prevent premature opening of the finishing mold. Accordingly, the present invention embodies differential gearing for alternately opening and closing the finishing mold in time relation to vertical swinging movement thereof. Operation of this mold,

opening and closing mechanism is in part controlled by the raising and lowering mechanism and in a manner to prevent premature opening of the mold.

A further object is to provide novel mechanism for adjusting the finishing molds and their carriers vertically relative to the corresponding neck molds and blowing heads.

' This adjustment permits proper contact between the neck and finishing molds as well as the use of finishing molds of different heights.

Other objects will be apparent hereinafter.

In the drawings:'

Fig. 1 is a fragmentary sectional elevation of a mold group embodying the present invention.

Fig. 2 is a horizontal sectional view taken substantially along the line IIII of Fig. 1.

Fig. 3 is a vertical sectional view, with parts in elevation, showing the difierential gearing employed in opening and closing the mold. i

Fig. 4 is a plan view with parts in section, showing the means for actuating the differential gearing.

gearing between blank transfer and article Fig. 5 is a fragmentary rear elevation showingthe mechanism which controls raising and lowering of the mold and opening and closing thereof.

a Fig. 6 is a detail vertical sectional view of the diiferential gear'mechanism.

Fig. 7 is a diagih-mmatic illustration of the cams for actuating the mold raising and lowering and mold opening and closing mechanism. The machine shown in the accompanying drawings and embodying the preferred form of my invention includes a rotary mold carriage 10 about whose periphery is arranged a series of columns or uprights 11 arranged in pairs, each pair adapted to support dipping frames 12. A driving pinion l0 operates thru a ring gear 11 to rotate the carriage. Each dipping frame is movable vertically in opposedslideways 13 on said pairs of columns for the purpose of raising and lowering the blank mold (not shown) at regular time intervals during rotation of, the carriage 10. The dipping frame 12 is provided with a vertical hinge pin 14 upon which the blowing head 15, blank mold (not shown) and neck mold 15 are supported. A plunger 16 is supported upon the dipping frame 12 in the usual or any preferred manner The above structure and operating mechanism therefor are well known and considered not to require further description or illustration. i The finishing mold carrier 17 with which the premnt invention is particularly concerned,is adapted to be moved by differential discharging posit-ions. In the present embodiment, the carrier is mounted for vertical swinging movement upon a slide 18 (-Figs'. 1 and 6) which is substantially inverted U- shaped. An adjustable stop 19 mom of the slideways 19 in part limits upward swinging movement of the mold carrier. The slide is adjusted vertically in a pair of horizontally spaced slideways 19 suspend- 95 ed from the mold carriage. Vertical ad- 1ustment ofthe slide facilitates'changing the spaced relation between the mold carrier -17- and the blowing head 15 and neck mold 1 5 so that finishing molds 20 of different heights 100 Y may be employed, and in addition provides means permitting accurate setting of the mold relative to the blowing head and neck mold. The construction by which said vertical adjustment of the slide 18 is ssible, includes a pair of supporting rods 21 (Figs. 1 and 2) secured to the upper end of the slide and threaded thru sleeves 22 rotatably carried by arms 23 which extend for wardly from a cross bar 28 fixed to brackets 29 on the uprights 11. Worm gears 24 (Figs. 1 and 2) on the upper ends of the sleeves 22 run in mesh with worms 25 on a horizontal shaft 26 journaled in bearings 27 on said cross bar 28. A hand wheel 30 (Fig. 2) on one end of the horizontal shaft 26 provides means whereby the shaft may be manually rotated when it is desired to rotate the worm gears 24. This operation moves the supporting rods 21 vertically in a direction determined by the direction of rotation of. the hand wheel 30. Thus, the elevation of the finishing moldcarrier 17 may be easily changed and a nice adjustment obtained. Y

25 The finishing mold carrier 17 is adapted to be swung vertically about a horizontal axis extending'across the slide 18, to thereby move the finishing mold 20 between blank transfer and article discharging positions. According to thepresent disclosure, such movement of the mold carrier is effected while the mold carriage 10 rotates. Obviously, the principle involved and a major portion of the mechanism may well be embodied in a non rotating type of machine. ing the finishing mold carrier 17 (Fig. 6) so that it may swing vertically, as above stated, arms 17 are provided at its inner end and are mounted on horizontal coeaxial shafts 36 and 38. The shaft 36 extends thru one of the shaft openings and is keyed in anopening 37 in one arm of the slide 18 so th at it does not rotate. The finishing mold carrier 17 is adapted to oscillate on this shaft 36 (Fig. 6). The other shaft 38 is axially aligned with the shaft 36, but spaced a short distance therefrom, and extends thru the bearing opening 35 in the other arm 17 and thence into an opening 39 in the adjacent-arm of the slide 18. This shaft 38 is keyed in the shaft opening 35 so that it oscillates with the finishing mold carrier17. (lounterweights 40 on said carrier balance the latter to a greator or loss extent on the supporting shafts 36 and 38 and thereby minimize the strain on the lifting and lowering mechanism to be now described.

Mechanism for alternately raising and lowering the finishing mold carrier 17 (Figs. 4, 5 and 6) includes cam actuated diflerential gearing which is in part arranged between the ad acent ends of the shafts 36 and 38. This differential gearing includes a housing H comprising a pair of end plates '45 ro-- tatably mounted on adjacent ends of the In supportcarries a bevel gear segment 51 running in mesh with a pinion 52 at the upper end of a shaft 53 journaled in a bearing 54 on one arm of the slide 18. The lower end of the shaft 53 is journaled in a bearing 55 on one of the guide members 19, said bearing comprising a pair of vertically spaced arms between which a spur gear 56 is disposed. This spur gear is splined to the shaft 53 to allow vertical adjustment of the slide 18 relative to the bearing 55 without interfering with the driving connection between said gear 56 and the remaining mechanism. A rack bar 57 (Figs. 4, 5 and 6) runs in mesh with the gear or pinion 56 and extends horizontally inward thru a guideway 58. A slide block 59 is connected to the inner end of the rack bar and carries a cam roll 60 which runs in a continuous cam 61, the latter being shaped to impart a reciprocating movement to the rack bar at proper timeinterval-s. A yielding connection 162 is provided between the rack bar 7 57 and slide block 59 as a precaution against breaking or undue straining of the mechanisms in the event abnormal conditions arise.

by means of an angular portion 62 in thecam 61. This movement of the rack bar rotates the gear 56 which inv turn imparts rotary movement to the shaft 53 and pinion 52. The pinion 52 rotates the gear segment 51 and thru the pinions 48 imparts rotary movement to the gear or pinion 49 carried by the shaft 38. In this manner the mold carrier 17 is swung downwardly from a blank transfer position to an article discharging position. The mold carrier is returned to its horizontal or blank transfer position by reversing the .rotation of the gear 56, such reversal being caused by the cam roll 60 moving thru the angular ortion 62 of the cam 61 (Fig. 7). The di erential gearing provides means whereby the mold carrier 17 moves about its axis twice the angular distance traveled by the gear housing H. Thus, for example, the housing H need only be moved thru an angle of 30 in order to obtain a 60 movement of the mold carrier 17.

Cooling air for application to the outer walls of the mold 20 is delivered to the hollow arms 65 by way of passageways in the arms 17 (Fig. 6), ports 101 in the side members of the slide 18 and'chambers 102 in the slideways 19. These chambers 102 may communicate with any suitable source of supply for cooling air.

The finishing mold (Fi s. 1 and 3) may be opened at any time regardless of the raising and lowering movements of the mold carrier 17 The cam formation controls this operation and determines where I the mold opens. Also the mold opening and closing mechanism is such that it positlvely prevents premature opening of the mold. Accordingly, formation 0 distorted lassware insofar as premature opening 0% the finishing molds is concerned may be avoided. The.

mold opening and closing mechanism includes a pair of mold arms (Fig. 2) fulcrumed 'to a vertical hinge pin 66 on themold carrier 17 and connected at their outer ends thru links 67 .to thefree ends of the sections of the finishing mold 20. The inner ends of the mold arms 65 are connected thru links 68 to a slide block 69 (Figs; 2, 5 and 6). This slide block is arranged in a guideway 70 in the mold carrier 17 A rack bar 71 is formed on the lower side of the slide block 69 and runs in mesh with an idler gear 72 carried by a shaft 73 journaled in bearings 7 4 on the lower side of the mold carrier 17. This idler gear 72 is actuated by differential. gearing which is carried in part by the shaft 38.

This differential gearing (Figs. 2, 3 and 5) includes a combined bevel and spurgear 75 rotatably carried by said shaft 38 and positioned so that it abuts the adjacent end plate 45 of the previously mentioned differentiat housing H. The teeth on the periphery of the gear 75 run inmesh with the idler gear 72. The bevel gear teeth 76 constantly mesh with a pinion 77. This pinion, 77 is carried by an arm 78 fixed to the aforementioned differential housing H and extending horizontally therefrom. A double bevel gear 79 (Figs. 5 and 6) is rotatably mounted on the shaft 38 and spaced from the gear 75 by a collar 80. One series of teeth on the gear 79 runs in mesh with the aforementioned pinion 77 while the other teeth are constantly in mesh with a driving pinion 81 at the upper end of a vertical shaft 82. This shaft is journaled in vertically spaced bearings 83. The lower bearingv 83 is bifurcated and its arms em brace a spur gear 84 splined to the shaft 82 and running in mesh with a rack bar 85. This rack bar 85 (Figs. 4, 5 and 6) is ieldingly connected/thru a spring device 8 to a slide-block 88 which carries a cam roll 89 running 1n a continuous stationary cam 90.

This cam 90 (Fig. 4) is formed with an angular portion 91 located at any predetermined position regardless of the location of the angular portion 62 in the cam 61, to effect opening or closing of the mold at any desired point.

When the mold is to be opened the shaft 82 (Figs. 4, 5 and-6) is rotated to thereby impart rotary movement to the double bevel gear 79 and thence by way of the pinion 77 to the combined bevel and spur gear 75 which runs in mesh with the idler gear 72. During the mold opening operation the pinion 77. i

(Fig. 5) is rotated counterclockwise and thru the gears 75 and 72 moves the slide block 69 radially inward. Such movement of the slide block in turn moves the outer ends of the mold arms 65 away from each other and thereby separates themold halves. The relative positions of the angular portions 62 and 91 ofthe cams and the pitch thereof predetermine the point at which the mold opens relative to its downward swing, and the speed at which the mold is lowered and opened, respectively. This may be varied as-required by different operating conditions.

The opening and closing movements'of the mold frame is being lifted or lowered,-not A withstanding the fact that certain. gears of said gear train, including gears 77 and 75 are rotated during the swinging movement of the mold frame. The reason for this will be apparent from the following considerations By reference to Fig. 3, it will be observed that during the downward swing, for exthe slide block 69. In other words, there must be nov relative movement of the frame 17 and gear 75. The required rotation isv imparted to the gear 75 at this time by the pinion 77 (see Fig. 5) carried on the gear casing H which, as hereinbefore explained rotates about the axis of the mold frame as thelatter swingsdown. As the gear 77 is in mesh with the now stationary gear 79 and rolls thereon it will rotate the gear 75 at double the angular speed with which the gear casing H is rotating about its axis. But as said gear casing rotates in the same direction and at only half the speed of the mold frame, as hereinbefore explained, the gear 75 will evidently rotate at the same speed as the mold frame 17 Thus, as above noted,no opening or closing movement is imparted to the mold by the swinging of the mold frame. Premature opening of the mold as it swings down- Ward to a discharging position is thus prevented.

7 When the mold reaches the point at which it is to be opened, the angular portion 91 in the cam 90 (Fig. 4) suddenly imparts such Q rack bar 85 to thereby actuate the mold close ing mechanism. a I

Modifications may be resorted to within the spirit and scope of my invention.

What I claim is: 1. In a glass forming machine, the combination of a mold carrier mounted to swing up and down about a horizontal axis, a partible mold on said carrier, means for swinging said carrier about said axis for raising an lowering the mold, mechanism for opening and closing the mold including a gear train,

I said train comprising a gear rotatable about said horizontal axis, and means cooperating with said carrier swinging means for causing said gear to rotate about said axis with the mold carrier and at the same angular velocit durin said raising and lowerlng of the mol [where y the swinging of the mold carrier about said axis will not cause opening or closing movements of the mold.

2. In combination, a mold carrier support,

, a pair of horizontally aligned shafts on the support, a mold carrier mounted onthe shafts, a partible mold on the carrier, differential gearing carried by the shafts, actuating means operating" through said gearing for 1 moving the carrier about the common axis of the shafts, means to alternately open and close the mold, said mold opening and closing means including a gear carried by one of the shafts, and means whereby operation of said differential gearing causes said last mentioned gear to rotate with the-mold carrier about said axis and thereby prevent opening and closing the mold independently of said' mold opening and closing means.

3. In combinatlon, a support, a inoldcarrier fulcrumed thereto, a partible mold 'on' said carrier, means to swing the carrier about its fulcrum,automatic cam actuated gearing arranged to alternately open and close the mold, said gearing operable to effect opening and closing movements of the mold independently of the position to which the carrier has been swun about its said fulcrum, and a cam for. actuating the gearing at regular time intervals.

4. In combination, amold carrier, a partible mold thereon, a support forthe mold carrier including, a non-rotating shaft, and a rotary shaft spaced from and axially ali ed with the other shaft, said mold carrier ed to the rotary shaft and loosely mounted on the rotary shaft, a driving gear conaxial with said driven gear, means for periodically oscillating the driving gear, and driving connections between said gears whereby the' driving connectionbetween said ears whereby the driven ear is operate by and at substantially twice the angular speed of the driving gear, means for opening the mold, and means controlled by said driving connection between the gears for securing the mold against premature opening.

6. In combination, a mold carrier a partible mold thereon, ear mechanism or alternately opening an closing the mold, a mold carrier support including a non-rotating shaft and a rotary shaft spaced from and axially aligned with the other shaft, said carrier being fixed to the rotary shaft and loosely mounted on the non-rotating shaft, additional gear mechanism in part carried by and interposed between-the adjacent ends of said shafts for oscillating the rotary shaftand thereby impart-ing corresponding movement to the mold carrier, and means controlled by 0 eration of said additional gear mechanismor holding the mold against premature opening.

7. In a las forming-machine, the combination o a rotating mold carriage, a mold carrier mounted thereon to swing up and down about ahorizontal axis, a partible mold on said carrier, a stationary cam, means actuated by' the cam' for swingin said carrier about said axis and thereby' raising and lowering the mold, mechanism for opening and closingthe mold including a stationary: cam and a gear train actuated by the cam,'said train comprising a gear rotatable about saidhorizontal axis, and means cooperating with said carrier swinging means for causing said gear to rotate about said axis with the mold carrier and at the same angular velocity during said raising and lowering of the mold,

,whereby the swinging of the mold carrier February, 1929.

the non-rotating shaft, a driven gear fixed to about said axis will not cause opening or closing movements of the mold.

Signed at Toledo, Ohio, this 15th day of RUSS-ELL G. ALLEN.

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