Title of Invention

PUSHOUT MECHANISM FOR TRANSFERRING BOTTLES FROM A DEADPLATE OF AN I.S. MACHINE TO A CONVEYOR

Abstract

A pushout mechanism for transferring bottles from a deadplate of an I.S. machine to a conveyor having a finger assembly including inner and outer pockets and pivotally mounted motor means secured to the finger assembly for linearly displacing the finger assembly between retracted and advanced positions and rotatively displacing the finger assembly between deadplate and conveyor positions so that bottles deposited on a deadplate can be transferred by rotating an advanced finger assembly from the deadplate position to the conveyor location, to the conveyor with the axis of each bottle on the bottle center line of the conveyor, comprising each of said inner and outer pockets including air directing means (22) for directing air to hold a bottle located within the pocket against the pocket, first pressurized air supply means including a first control valve (34, 40, 42) for supplying pressurized air to the air directing means of the inner pocket, second pressurized air supply means including a second control valve (34, 44, 48) for supplying pressurized air to the air directing means of the outer pocket, and control means (36) for opening said first control valve when the outer pocket is located over the deadplate and turning off said first control valve at a first time when the bottle in the outer pocket is on the conveyor, and for opening said second control valve when the inner pocket is located over the deadplate and turning off said second control valve at a second time when the bottle in the inner pocket is on the conveyor.

Full Text

FORM 2 THE PATENTS ACT 1970 [39 OF 1970] COMPLETE SPECIFICATION [See Section 10] of An I.S MACHNE TO A CONVEYOR EMHART GLASS S.A., a Swiss corporation having a place of business at Gewerbestrasse 11, CH-6330 Cham, Switzerland, The following specification particularly describes and ascertain the nature of the invention and the manner in which it is to be performed:- The present invention relates to a pushout mechanism for transferring bottles from a deadplate of an I.S. machine to a conveyor. The present invention relates to I.S. {individual section) machines for forming bottles from gobs of molten glass and more specifically to a 10 pushout mechanism, which will be used in each individual section. BACKGROUND OF THE INVENTION 15 Following the formation of a bottle in the blow station of a section of an I.S. machine, blow molds separate to release the formed bottle and a takeout device transfers the bottle to a deadplate where the bottle momentarily sits while it is cooled by air 20 which flows up through holes in the deadplate. After it has been sufficiently cooled, a pushout mechanism pushes the bottle in a 90° arc off of the deadplate onto a moving conveyor. U.S patents numbered 5,733,354 and 5,527,372 25 disclose a state of the art pushout mechanism. In the disclosed pushout mechanism, which includes an arm defining three pockets, three bottles are transferred from a deadplate to the moving conveyor. Each bottle is captured by an associated pocket, which has a rear 30 wall or finger, and air is jetted from each of the three associated fingers to hold a bottle against each pocket. In operation, pressurized air is supplied to an air cylinder, to which the arm is attached, to advance the arm from a retracted position to an 35 advanced position over the deadplate and this cylinder advance air is simultaneously and concurrently supplied to the conduits leading to openings in each finger which are designed to jet the air outwardly. When the pockets have been displaced to.a location where the first bottle is located on the bottle centerline of the conveyor, the cylinder advance air (and hence the jetted air) is turned off. When the rotation of the pushout is completed, cylinder retract air is turned on to retract the arm to a remote position so that it can be rotated displaced back to its start position. OBJECT OF THE INVENTION It is an object of the present invention to provide a pushout mechanism, which will provide the ability to better control the transfer of the bottle to the conveyor. Other objects and advantages of the present invention will become apparent from the following portion of this specification and. from the accompany-ing drawings, which illustrate in accordance with the mandate of the patent statutes a presently preferred embodiment incorporating the principles of the invention. According to the present invention there is provided a pushout mechanism for transferring bottles from a deadplate of an I.S. machine to a conveyor having a finger assembly including inner and outer pockets and pivotally mounted motor means secured to the finger assembly for linearly displacing the finger assembly between retracted and advanced positions and rotatively displacing the finger assembly between deadplate and conveyor positions so that bottles deposited on a deadplate can be transferred by rotating an advanced finger assembly from the deadplate position to the conveyor location, to the conveyor with the axis of each bottle on the bottle center line of the conveyor, comprising each of said inner and outer pockets including air directing means (22) for directing air to hold a bottle located within the pocket against the pocket, first pressurized air supply means including a first control valve for supplying pressurized air to the air directing means of the inner pocket, second pressurized air supply means including a second control valve for supplying pressurized air to the air directing means of the outer pocket, and control means for opening said first control valve when the outer pocket is located over the deadplate and turning off said first control valve at a first time when the bottle in the outer pocket is on the conveyor, and for opening said second control valve when the inner pocket is located over the deadplate and turning off said second control valve at a second time when the bottle in the inner pocket is on the conveyor. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS Figure 1 is a schematic drawing of a pushout mechanism made in accordance with the teaching of the present invention; and Figure 2 is a timing chart illustrating one mode for operating the pushout mechanism shown in figure 1. BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT A pushout mechanism 10 is used to push glass bottles (not shown), formed in a section of an I.S. machine, from a deadplate 12 onto a conveyor 14. The pushout mechanism has a finger assembly 16 -4- defined by a side wall 18 and fingers 20 which extend perpendicular to the side wall to define bottle receiving pockets. As shown, the pushout is configured for triple gob operation and accordingly 5 has three bottle receiving pockets. Pocket No.l, is the rearmost (the pocket at the left end) and pockets numbered 2 and 3 are the next successive pockets. Each finger, proximate its lower outside J corner has a formed exit port 22 so that pressurized 10 air can be jetted 24 to pull a bottle into its associated corner. The sidewall 18 is attached to a pair of rods 26 integral with a piston 28 displace-able within a pneumatic cylinder 30. The pneumatic cylinder is mounted for' rotation about a vertical 15 axis from a pickup location at the deadplate to a deposit location at the conveyor. The rods are axially displaceable between a retracted position remote from the bottles to an advanced position. As can be seen from figure 1, there are four 20 air lines from a source of pressurized air 32 (while ■ a common source is illustrated, discrete sources could be provided so that different pressures would be available). Passage of air through each air line is controlled by a suitable on/off valve 34 which 25 will be operated by a control 36. Retract air and advance air will advance the piston to the deadplate and retract air will retract the piston from the conveyor. Pocket #1 Air will be delivered through a suitable conduit 40 in one of the rods to a conduit 30 42 in the finger assembly which communicates with the jet in the first pocket finger. Pocket #2&3 Air will be delivered through a suitable conduit 44 in the other one of the rods to a conduit 46 in the finger assembly which communicates with the jet in 35 the second pocket and to a conduit 48 in the finger assembly which communicates with the jet in the 5 third pocket finger. The jetted air pulls bottles located in the associated pockets into the corner of the pockets. Figure 2 illustrates a cycle of operation for 5 the pushout mechanism. At the beginning of the cycle, the cylinder is retracted and is located proximate the deadplate. Pocket air to pockets 1 2 and 3 is off. Three bottles, that have been "released by the blow molds of a section, will be 10 gripped by a takeout (not shown) and transferred to a position over the deadplate where they will be held momentarily a very short distance above the deadplate while cooling air blows upwardly through the holes in the deadplate. When the bottles have 15 been cooled sufficiently, the bottles are released and drop onto the deadplate. At about this same time, Cylinder Advance Air is turned on to advance the cylinder, and hence the finger assembly, to an advanced location over the deadplate with a bottle 20 located centrally in each pocket. After the finger assembly has been displaced to the advanced position, Pocket Air #1 and Pocket Air #2&3 are turned on to pull the bottles into firm engagement with the corners of the pockets and then the 25 cylinder is rotated (usually with an electronic motor which displaces the finger assembly in accordance with a desired profile) to the deposit location where the bottles are over the conveyor. As can be seen from this timing chart, Pocket Air 30 #2&3 is turned off before Pocket Air #1 and while the cylinder is rotating to the final deposit location. The time when Pocket Air #2&3 is turned off is set to correspond to the time when the bottle in pocket number 3 (the outer pocket) has reached 35 the bottle center line on the conveyor. The bottle in pocket number 2, will accordingly be released 6 WE CLAIM: 1. A pushout mechanism for transferring bottles from a deadplate of an I.S. machine to a conveyor having a finger assembly including inner and outer pockets and pivotally mounted motor means secured to the finger assembly for linearly displacing the finger assembly between retracted and advanced positions and rotatively displacing the finger assembly between deadplate and conveyor positions so that bottles deposited on a deadplate can be transferred by rotating an advanced finger assembly from the deadplate position to the conveyor location, to the conveyor with the axis of each bottle on the bottle center line of the conveyor, comprising each of said inner and outer pockets including air directing means (22) for directing air to hold a bottle located within the pocket against the pocket, first pressurized air supply means including a first control valve (34, 40, 42) for supplying pressurized air to the air directing means of the inner pocket, second pressurized air supply means including a second control valve (34, 44, 48) for supplying pressurized air to the air directing means of the outer pocket, and control means (36) for opening said first control valve when the outer pocket is located over the deadplate and turning off said first control valve at a first time when the bottle in the outer pocket is on the conveyor, and for opening said second control valve when the inner pocket is located over the deadplate and turning off said second control valve at a second time when the bottle in the inner pocket is on the conveyor. -8- 2. A pushout mechanism as claimed in claim 1, wherein said first time corresponds to the time when the bottle in the outer pocket reaches the conveyor bottle center line and wherein said second time corresponds to the time when the bottle in the inner pocket reaches the conveyor bottle center line. 3. A pushout mechanism as claimed in claim 1, wherein said finger assembly comprises an inner, second and an outer pocket, said second pocket includes air directing means (22) for directing air to hold a bottle located within the center pocket against the center pocket, and second pressurized air supply means further comprises means (46) for supplying pressurized air to the air directing means of the center pocket. 4. A pushout mechanism for transferring bottles from deadplate of an I.S. machine substantially as herein before described with reference to the accompanying drawings. Dated this 22nd day of January, 2001/-) (RANJNA MEHTA DUTT) OF REMFRY & SAGAR ATTORNEY FOR THE APPLICANTS

Documents:

69-mum-2001-cancelled pages(28-03-2006).pdf

69-mum-2001-claims(granted)-(22-01-2001).doc

69-mum-2001-claims(granted)-(22-01-2001).pdf

69-mum-2001-correspondence(27-03-2006).pdf

69-mum-2001-correspondence(ipo)-(30-06-2005).pdf

69-mum-2001-drawing(22-01-2001).pdf

69-mum-2001-form 1(22-01-2001).pdf

69-mum-2001-form 18(24-01-2005).pdf

69-mum-2001-form 2(granted)-(22-01-2001).doc

69-mum-2001-form 2(granted)-(22-01-2001).pdf

69-mum-2001-form 3(18-04-2001).pdf

69-mum-2001-form 3(22-01-2001).pdf

69-mum-2001-form 3(28-03-2006).pdf

69-mum-2001-form 4(20-12-2005).pdf

69-mum-2001-form 5(22-01-2001).pdf

69-mum-2001-petition under rule 137(28-03-2006).pdf

69-mum-2001-petition under rule 138(28-03-2006).pdf

69-mum-2001-power of authority(04-04-2001).pdf

69-mum-2001-power of authority(28-03-2006).pdf

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