US1949894A - Glassware forming machine - Google Patents

Description

March 6, 1 934.

J. P. BENOIT El AL GLASSWARE FORMING MACHINE Filed Sept. 18, 1931 a Sheets-Sheet 1 March 6, 1934.

J. 'P. BENOIT El AL g 4 94 GLASSWARE FORMING MACHINE Filed Sept. 18, 1931 a Sheets-Sheet 2 March 6, 1934. J, R BENQIT r AL 1,949,894

GLASSWARE FORMING MACHINE Filed Sept. 18, 1931 3 Sheets-Sheet 3 Patented Mar. 6, 1934 UNITED STATES PATENT. OFFICE 1.94am cnssswaaaroamno MACHINE Application September 18, 1931, Serial No. 563,574

The present invention relates to improvements in glassware forming machines and more particularly to mechanism for operating article holders which are commonly employed to prevent lateral 7 movement of the finished articles during opening oi the finishing molds.

In modern machines for blowing bottles or other hollow articles, more especially the well known Owens type, it has been and generally speaking is now the practice to seat holding disks on the bottles just prior to the timethe finishing molds are to be openedior the purpose of discharging the finished bottles. In order that the blown articles may be more or-less fully set before they are discharged, devices have been designed and operated for applying cooling air to the interior oi the articles during a major portion of their movement from the final blowing position to'the discharging position. In some instances, 2o conduits have been provided in the article holding disks and connected to a suitable source of supply for cooling air, these disks being seated upon the finished articles a considerable distance in advance of the point at which they are,

ordinarily brought into contact with said articles. Such operative engagement of the holding disks with the finished articles has been obtained heretofore by mechanism under the control of a cam or track extending from the blowing position to the discharging position. Because of the necessity oi lowering the finishing mold units to clear the revolving pot or other supply tank for molten glass, and, generally conform to the shape of the track which raises and lowers the finishing molds, said cam or track is made up of a great many curved sections which must be oi exceptionally accurate formation in order to maintain the holding disks in proper position on the finished articles.

An object of the present invention is the provision of novel means. individual to the mold groups for effecting movement of the article holding disks relative to the molds, said means eliminating the necessity for using a long cam or track such as referred to above. 4

Another object is the provision oi adjustable means individual to the article holding disks for predetermining and regulably controlling the point at which they initially contact with the articles in the finishing molds.

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

In the drawings:

Fig. 1 is a side elevational view of a finishing mold unit'embodying our improved mechanism tions 01' the article holders.

"the cam mechanism shifted to the extreme op- 19 Claims. (01. 49-14) for operating the article holders, the latter being disposed in an inoperative position.

Fig. 2 is a view similar to Fig. 1 showing the article holders in operative position.

Fig. 3 is a plan view.

Figs. 4 to 7 inclusive, are diagrammatic side elevations showing the several successive posi- Fig. 4 shows the position'oi' the holders at the time the usual final blowing operation is completed. Fig. 5 shows 06 the mold substantially in its lowermostposition and the article holders seated on the necks oi the finished articles. Fig. 6 shows the finishing mold substantially in discharging position and the usual knock-out" cam holding the diskaonthe articles in the mold. Fig. 7 shows the holders out of contact with the articles and the mold in discharging position having Just passed beyond the knock-out cam.

Fig. 8 is a diagrammatic plan view indicating 76 substantially the path of travel oi the finishing molds and article holders. Fig. 9 is a sectional elevation view showing the cam and lever mechanism for moving the article holders.

Fig. 10 is a rear elevation of said cam mechanism looking in the direction 0! the arrow shown in Fig. 9." Fig. 11 is a fragmentary side elevation showing 88 posite position from that indicated in Fig. 9.

Fig. 12 is a sectional elevational view taken substantially along the line XII-XII o1 Fig. 9.

The illustrated embodiment of the invention is shown in conjunction with a finishing mold unit oi conventional form and a "knock-out mechanism which to a considerable extent is 0! well known construction. Brieiiy stated, the finishing mold unit includes a sectional mold 15 mounted upon a finishing mold carrier 16 and connected through arms 17 and toggle links 18 to a slide block 19 which is actuated by cam mechanism (not shown) at regular time intervals for the purpose of alternately opening and closing said mold. The mold carrier is mounted ior vertical swinging movement about the horizontal trun nions 16", as is customary. roller so mounted on the lower side of the fin ring mold carrier 16 is continuously in engagen with 'a semen tine track 21 (Figs. 1, 2, and oh is of ordinary iorm and extends about ertioai aids or rotation of the finishing is shaped to control the'positionoi the its senior at all times, Between the no iii i 8) the sepentine track is si finishing mold 15 to assume various angular positions, certain of which are shown in Figs. 4, 5, 6, and '7. Figure 6 depicts the position of the mold just before it reaches the article discharg-.

ing position C. It will be noted (Fig. 5) that the finishing mold carrier assumes a nearly vertical position for a period of time during its travel between positions A and C, this being necessary in order to avoid striking the revolving pot 22 or other container for the supplylbody of molten glass.

The article holding means or knock-out mechanism, as it is commonly referred to, is for the greater part disclosed in Patent No. 1,319,098 to La France, dated October 21, 1919, to which reference may be had for details of construction. Generally speaking the mechanism in'so far as common practice is concerned, includes a bracket 23 attached to the finishing mold carrier 16 and" supporting at its outer end an elongated tubular housing 24 through which a rock shaft 25 extends. A knock-out arm 26 is mounted on the upper end of the rock shaft 25 and at its outer end supports article holding disks 2'7 which may be of conventional form. Conduits 28 extending through the disks 27 communicate with a passageway 29 in said arm 26, said passageway in turn being connected to a pipe 30 leading to a source of supply of air under pressure (not shown). A coil spring, not illustrated herein but disclosed in said patent (wherein it is not enclosed in the housing as-in the present case), is arranged within the tubular housing 24 for the purpose of yieldingly holding the rock shaft and knock-out arm in their inoperative positions.

A cam roll 31 carried by the rock shaft 25 ex-- tends into a spiral slot 32 in said housing. Thus it will be seen that reciprocation of the rock shaft 25 is accompanied by oscillative movement of the disks 2'? about the axis of said rock shaft. These two movements are necessary in order that in one position the disks may be firmly seated upon the upper ends of the articles in the finishing molds, while in'another position said disks are so located that they will not interfere with normal periodic cooperation between said finishing mold and other parts of the machine, or discharge of the finished articles from said mold. A cam roll 33 secured to the lower end of the rock shaft 25 is adapted for operative engagement with the knock-out cam 34, (Figs. 2, 6, and 8) for a short period of time in advance of and adjacent the article discharging position C. This cam 34 (Figs. 2 and 6) holds the knockout disks 27 firmly engaged with the finished articles after the mechanism constituting the present invention has ceased to perform its function of holding said disks engaged with the articles and during the time that the finishing mold is opening. The foregoing sets forth generally the conventional form of finishing mold and knock-out mechanism" with which the present invention is particularly concerned.

As brought out heretofore it is frequently desirable to introduce cooling air into the finished articles for varying periods of time prior to their discharge from the finishing mold sothat the glass will be more or less firmly set at the time they are ejected from the mold. In order that such application of air may be obtained and for the purpose of avoiding the necessity for using a knock-out cam or track (in addition to that ordinarily employed), mechanism which will now I be describedis employed. To be effective, a cam,

capable of performing the function of the mechanism to be now described would necessarily correspond substantially in length and shape to the serpentine track between positions A and C. A push rod 35'is mounted upon the tubular housing 24 for movement lengthwise thereof and has its lower end suitably connected to a collar 36which is rotatably mounted upon the lower end of the rock shaft 25. The upper end of the push rod 35 is slidinglymounted in a guide 37 on said tubular housing 24. A sprocket chain 38 or equivalent connector is secured at one end to said push rod 35, runs over a small sprocket 39 on the housing 24 and is then carried to the inner end of the finishing mold carrier 16 where it is attached to mechanism which periodically pulls the chain for the purpose of moving said push rod and thereby operating the rock shaft 25 and article holding disk 27 thereon. i

The mechanism for pulling the sprocket chain 38, as indicated heretofore, is brought into operation by the downward swinging movement of the finishing mold carrier, said mechanism being brought into operation after the finishing mold has moved downward only a few degrees so that the article holding disks will be engaged with the upper open ends of the articles in the molds at the earliest possible moment. This mechanism functions to retain the article holding disks seated upon the bottles while the mold is travelling from position A (Fig. 3) to the knock-out cam 34 which is arranged just ahead of the bottle discharging position C, said cam then performing the function which had previously been performed by the chain mechanism. Specifically, the construction of the mechanism for actuating the chain 38 is substantially as follows. A circular attaching plate 40 or base plate, is secured to one of the trunnions 16* with its axis aligned with the center about which the mold carrier swings. A substantially semi-circular bearing plate 41 is 115 carried by the base plate 40 having its bearing surface disposed at right angles to the face of said base plate. This bearing plate 41 is arranged on the forward edge of the attaching or base plate 40 and adjacent each end is provided with a radial opening 42, in each of which openings a spring pressed detent 43 is located. Coil springs 44 exert a constant outward pressure on the detents 43 which pressure may be regulated by adjustable screw plugs 45. These detents are adapted to yieldingly hold a cam 46 in either of two predetermined and adjustable positions as will be apparent presently. A

This cam 46 is of segmental form and extends outwardly from and at right angles to a holder 130 47 with which it may be integrally formed. The holder 4'! is substantially coextensive with the semi-circular bearing plate 41 and is slidingly mounted thereon for oscillation about the axis of the base plate 40 and incidentally the axis of. 155 the trunnions 16. Sliding connection between the holder 4'? and bearing plate 41 includes interlocking ribs 48 on said holder and bearing plate and a retaining plate 49 which is separably connected to the holder 4'7 by screws'50 and takes 140 over the adjacent margin of the bearing plate 41. Recesses 51 on the inner surface of the holder 47 are adapted for engagement one at a time with thespring pressed detents 43.

The upper end of the cam 46 terminates short 145 of the upper end of the holder 47 and has an angular portion 52 which merges into the outer surface of the holder. An adjustable end block 53 is attached by means of a screw 54 to the lower end of the cam 46. An end block 55 is adjustably 150 mounted on the upper end of the cam holder 47 .by means of a screw or bolt 56. Both of these blocks are capable of adjustment toward and away from each other so that the mechanism may be set to handle articles of different heights. A lever 5'7 is mounted upon a hinge pin 58 which in turn is journaled in a bearing 59 on a bracket 60 attached to the finishing mold carrier 16. A cam roll 61 is mounted upon the upper and inner end of the lever 57 for engagement with the cam 46 and upper end block 55. A collar 62 carried by said hinge pin 58 periodically engages the lower end block 53 for a purpose which will be apparent presently. The end of the lever 57 opposite the roll 61 is connected the sprocket chain 38 and includes a curved finger63, the lower surface of which is adapted for engagement with the upper side of the sprocket chain 38 as indicated, in Fig. 2 for the purpose of properly positioning said chain.

In operation, it will be assumed that the mold.

and knock-out operating mechanism are initialla positioned as indicated in Figs. 1, 4, and 9, and the mold carriage (not shown) rotating in a clockwise direction along the path diagrammatically shown in Fig. 8. Substantially at the position A the mold carrier, due to the contour of the serpentine track 21 begins to swing downward about the horizontal axis of the trunnions 16". Such downward movement brings the cam r011 61 (Fig. 9) on the lever 57 into engagement with the angular portion 52 of the cam 46. Immediately the lever is rocked about its pivot and such rocking pulls the sprocket chain 38 toward the trunnion with the result that the rock shaft 25 (Fig. 1) is lowered and at the same time given a rotary motion which brings the article holding disks into contact with the upper ends of the bottles or other articles in the finishing mold. Continued downward swinging of the finishing mold carrier 16, which is necessary in order to prevent the mold from striking the revolving pct 22 (Fig. 8) causes the collar 62 (Figs. 3 and 12) to contact with the lower end block 53 (Figs. 9 and 11) and through it move the cam 46 and its holder 4'? to the position indicated in Figs. 5 and 11. It is understood that the pressure of the collar 62 against the lower end block 53 is sufficient to cause retraction of the lower spring pressed detent 51 so that the position of the cam 46 may be changed as just pointed out. The various elements operate as set forth until the finishing mold is in proximity to the article discharging position C and the roller 33 at the lower end of the rock shaft 25 moves into engagement with the knock-out cam 34. This cam 34 is positioned to engage said roller 33 when the finishing mold is moved upward to the level (Figs. 6 and 7) at which the bottles or other articles are to be discharged from said mold. Such upward movement of the mold carrier, of course, correspondingly raises the lever 57 so that when the mold is at the discharging level the cam roll 61 on the lever has moved into engagement with the angular portion 52 of the cam 46. Thus considerable slack is placed in the sprocket cha n and the entire control of the operation of the article holding disks is transferred to the knock-out cam 34 which operates in the usual well known manner. After the article discharging operation has been completed the finishing mold carrier will again move to the horizontal position shown in Fig. l preparatory to enclosing additional blanks or parisons and while moving to this position, will cause engagement between the cam roll 61 and the upper end block 55 (Fig. 9). Continued upward travel of the mold carrier will result in the return of the cam 46 to its original position as indicated in Figs. 1, 4, and 9.

It will be understood from the above that changing the position of the cam 46 in the manner described is necessary in order that control of the movement of the article holding disks at the article holding position C may be transferred from 1 the chain mechanism to the cam 34. In this connection it is to be noted that if the angular portion 52 of the cam 46 could not move downwardly during downward travel of the finishing mold carrier, it would be impossible to remove the disks from engagement with the articles in the mold until the latter had reached substantially the position shown inFlgs. 1 and 4, this position being that in which blanks or parisons are nclosed in, the finishing molds and too high to permit satisfactory ejection of the finished articles.

Modifications may be resorted to within the spirit and scope of the appended claims.

What we claim is:

1. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, supporting means for the disk including a tubular housing mounted on the mold carrier in proximity to the mold, a shaft mounted for oscillation and reciprocation in said housing, means whereby reciprocation of the shaft imparts an oscillatory movement thereto, a segmental cam about the center of which said mold carrier is adapted to be tilted, a lever pivoted to thejmold carrier and adapted to be rocked by said cam during tilting movement of the carrier, means providing connection between said lever and shaft whereby the latter is actuated to operatively position the article engaging disk, means so supporting said cam that it is free to oscillate within predetermined limits, and means whereby relative movement between said lever and cam imparts an oscillatory movement to the latter.

2. In combination; a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, supporting means for the disk including a tubular housing mounted on the mold carrier in proximity to the mold, a shaft mounted for oscillation and reciprocation in said housing, means whereby reciprocation of the shaft imparts an oscillatory movement thereto. a segmental cam about the center of which said mold carrier is adapted to be tilted, a holder for said cam, a stationary bearing plate upon which said holder is mounted for oscillatory move' ment about said center, automatic means for yieldingly retaining said holder and cam at either end of its path of oscillation, a lever pivoted to the mold carrier and adapted for movement with the latter relative to the cam, said cam adapted to rock the lever; means whereby movement of the lever beyond a predetermined point at which the cam rocks said lever oscillates said cam, and meansproviding connection between said lever and shaft whereby the latter is actuated tooperatively position the article engaging disk.

3. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, mechanism for periodically seating the disk upon an article in the finishing mold. said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted. a holder for said cam, a stationary bearing plate upon which the holder and cam are mounted for oscillatory movement about said center, automatic means adapted to yieldingly retain the holder and cam at either end of their path of oscillation, said cam having an angular portion spaced from one end of the holder, a lever pivoted to the mold carrier and adapted to be rocked by contact with said angular portion of the cam, means whereby downward movement of the lever a predetermined distance beyond said angular portion changes the location of the latter, and means actuated by rocking of the lever to operate the article engaging disk. I

4. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, mechanism for periodically seating the disk upon an article in the finishing mold, said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted, a holder for said cam, a stationary bearing plate upon which the holder and cam are mounted for oscillatory movement about said center, automatic means adapted to yieldingly retain the holder and cam at either endof their path of oscillation, said cam having an angular portion spaced from one end of the holder, a lever pivoted to the mold carrier and adapted to be rocked by contact with said angular portion of the cam, adjustable end blocks arranged at relatively remote ends of the cam and holder, -means whereby downward movement or the lever with the mold carrier a predetermined distance beyond said angular portion of the cam moves said angular portion downwardly, means whereby upward movement of said lever with the carrier beyond a predetermined point returns said cam to its original position, and means whereby rocking of said lever actuates the article engaging disk.

5. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, mechanism for seating the disk upon an article in the finishing mold, said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted, means supporting said cam for limited oscillatory movement about said center, a lever pivoted to the mold carrier and adapted to be rocked by said cam at a predetermined point in the downward movement of the mold carrier, automatic means for moving the cam after it has initally rocked said lever to thereby change the point at which said lever will be rocked during upward movement of the carrier, and means actuated by rocking of said lever for controlling the movements of the article engaging disk.

6. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, mechanism for seating the disk upon an article in, the finishing mold, said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted, means supporting said cam for limited oscillatory movement about said center, a lever pivoted to the mold carrier and adaptedto be rocked by said cam at a predetermined point in the downward movement oil-the mold carrier, automatic means for moving the cam after it has initially rocked said lever to thereby change the point at which said lever will be rocked during upward movement of the carrier, and means actuated by rocking of said lever for controlling the movements of the article engaging disk, said cam moving means including adjustable end blocks disposed in the path of travel of the lever with the mold carrier.

7. In combination, a tiltable finishing mold carrier, a partible finishing mold thereon, article holding means. individual to the mold including an article engaging disk, mechanism for seating the disk upon an article in the finishing mold, said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted, means supporting said cam for limited oscillatory movement about said center,

a lever pivoted to the mold carrier and adapted to be rocked by said cam at a predetermined point in the downward movement 6f the mold carrier, automatic means for moving the camafter it has initially rocked said lever to thereby change the point at which said lever will be rocked during upward movement of the carrier, means actuated by rocking of said lever for controlling the movements of the article engaging disk, and

automatic means yieldingly retaining said cam in either of its two operating positions.

8. In combination, a tiltable finishing mold car rier, a partible finishing mold thereon, article holding means individual to the mold including an article engaging disk, mechanism for seating the disk upon an article in the finishing mold, said mechanism including a segmental cam about the center of which said mold carrier is adapted to be tilted, means supporting said cam for limited oscillatory movement about said center, a lever pivoted to the mold carrier and adapted to be rocked by said cam at a predetermined point in the downward movement of the mold carrier, automatic means for moving the cam after it has initially rocked said lever tothereby change the point at which said lever will be rocked during upward movement of the carrier, means actuated by rocking of said lever for controlling the movements of the article engaging disk, and spring pressed detents arranged to yieldingly retain the cam in either of its two operating positions.

9. In a machine for forming glass articles, the combination of a finishing mold carrier, 9. partible finishing"- mold thereon, an article holding device,

meansvfor swinging the mold carrier and the mold thereon up and down, a cam, mechanism actuated by the cam during said downward movement for causing operative engagement of said holding device with an article in the mold when the mold carrier reaches a predetermined position during its downward swing, and automatic means for shifting the cam and causing said mechanism to release said article holding device from the control of said mechanism before the mold carrier has reached said predetermined position during its upward swing.

10. In a machine for forming glass articles, the combination 01' a finishing mold carrier mounted to swing up and down, a partible finishing mold thereon, an article holding device, mechanism operated by the downward swinging movement of the mold carrier to move said holding device into position to engage an article in the mold, and

separate means brought into activity for retaining said holding device in engagement with said article when the mold carrier is swung upward.

11. In a machine for forming glass articles, the combination of a finishing mold carrier mounted to swing up and down about a horizontal axis, a partible finishing mold on the carrier, an article holding device mounted on the carrier and movable into and out of position to engage an article in the mold, a cam, mechanism actuated by said cam during the downward movement of the carrier to move said holding device into engagement with an article in the mold, a second cam operable to retain said holding device in operative .poSition when the mold carrier reaches a predetermined position during its upward swing, and automatic means to shift said first mentioned cam into position to permit the control of the holding device by said second cam.

12. In a machine for forming glass articles, the combination of a mold carrier, a mold thereon, an article holding device on said carrier movable into and out of position to hold a molded article, said carrier mounted to swing up and down about a horizontal axis, a cam, means actuated by said cam during the downward swinging movement of the mold carrier to bring the said holding device to said article holding position, a second cam operable to retain said holding device in article holding position, and automatic means for shitting said first mentioned cam into position to permit the control of said holding device by said second mentioned cam when the mold carrier is swung upward.

13. In a machine for .forming glass articles, the combination of a traveling mold carrier, a mold thereon, an article holding device mounted on the carrier and movable into and out of position to engage an article formed in said mold, a cam mounted to travel with said carrier, mechanism actuated by said cam for moving the article holding device into article holding position, a stationary cam, and mechanism operated thereby for moving said article holding device.

14. In a machine for forming glass articles,

the combination of a traveling mold carrier, a

mold thereon, an article holding device mounted on the carrier and movable into and out of position to engage an article formed in said mold, a cam mounted to travel with said carrier, mechanism actuated by said cam for moving the article holding device into article holding position, a stationary cam, mechanism operated thereby for moving said article holding device, and automatic means for shifting said first mentioned cam- 16. In a machine for forming glass articles, the. combination of a traveling mold carrier, a mold thereon, an article holding device, a cam mounted to travel with the mold carrier, mechanism providing operating connections between said cam and holding device, a stationary cam, means controlled by said stationary cam and including part of said operating connections, for actuating said holding device when the mold carrier reaches a predetermined point during its travel, and automatic means for shifting said first mentioned cam and thereby taking the holding device out of its control during the time the holding device is under the control of said second cam.

17. In a machine for forming glass articles, the combination of a traveling mold carrier mounted to swing up and down about a horizontal axis, a partible mold on said carrier, an article holding device mounted on said carrier, a cam traveling with said carrier, mechanism actuated by said cam for moving the holding device into position to engage an article in the mold, a stationary cam, and means controlled by the stationary cam for actuating said article holding device.

18. In a machine for'forming glass articles, the combination of a traveling mold carriage, a mold carrier mounted thereon to swing up and down about a horizontal axis, a mold on said carrier, an article holding disk, a cam mounted to travel with the mold carriage, mechanism actuated by said cam during the downward swinging movement of the mold carrier for moving the disk into position to engage an article in the mold, a stationary cam, means whereby said stationary cam is operative to control the position of said disk dur ing a portion of the travel of the mold carriage, and means whereby the disk is taken out of the control of said first mentioned cam while under the control of said stationary cam.

19. In a machine for forming glass articles, the combination of a traveling mold carriage, a mold carrier mounted thereon to swing up and down about a horizontal axis, a mold on said carrier, an article holding disk, a cam mounted to travel with the mold carrier, mechanism actuated by said cam during the downward movement of the mold carrier to move said disk into engagement with an article in the .mold, a stationary 121 cam operable to hold the disk in article holding position when the mold carrier has been swung upward to a predetermined position, and automatic means for shifting said first mentioned cam into a position on the mold carriage in which it is operative to control said disk while the latter is under the control of said stationary cam.

JOSEPH P. BENOIT.

LEONARD n. SOUBIER. 135

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