Single axis applicator
11628659 · 2023-04-18
Assignee
Inventors
Cpc classification
B32B37/0046
PERFORMING OPERATIONS; TRANSPORTING
B32B37/0076
PERFORMING OPERATIONS; TRANSPORTING
B32B37/16
PERFORMING OPERATIONS; TRANSPORTING
B32B37/12
PERFORMING OPERATIONS; TRANSPORTING
B05C5/0216
PERFORMING OPERATIONS; TRANSPORTING
B32B38/185
PERFORMING OPERATIONS; TRANSPORTING
International classification
B32B37/00
PERFORMING OPERATIONS; TRANSPORTING
B05C5/02
PERFORMING OPERATIONS; TRANSPORTING
B32B37/12
PERFORMING OPERATIONS; TRANSPORTING
B32B37/16
PERFORMING OPERATIONS; TRANSPORTING
B32B38/18
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A single axis application unit for processing a glass workpiece includes a workpiece supporting table, an applicator movable on a traveler shiftable along a first linear axis and a central suction unit that is activateable to grip the glass workpiece that travels along a second linear axis oriented generally perpendicular to the first linear axis. A central suction unit brake selectively secures the central suction unit both rotationally and translationally. The central suction unit is freely moveable both translationally and rotationally when the central suction unit brake is released. A mid-peripheral suction unit is located at a fixed location remote from the central suction unit and selectively activateable to grip the glass workpiece to hold the glass workpiece in a fixed orientation. A corner suction gripper is movable with the applicator parallel to the first linear axis, and is selectively activateable to grip the glass workpiece.
Claims
1. A method of processing a glass workpiece, comprising: placing the glass workpiece in a substantially vertical orientation against a supporting structure such that the glass workpiece is supported along at least one edge thereof; applying adhesive material to an edge of the glass workpiece along a first linear axis oriented parallel to and outwardly of at least one edge of the supporting structure; gripping the glass workpiece centrally with a central suction unit that travels along a second linear axis oriented generally perpendicular to the first linear axis; moving the central suction unit freely both translationally and rotationally within a perimeter of the supporting structure at least part of the time; selectively gripping the glass workpiece at a fixed location remote from a central portion of the glass workpiece to secure the glass workpiece in a desired orientation; gripping the glass workpiece proximate a corner of the glass workpiece with a corner suction gripper; translating the corner suction gripper linearly parallel to the first linear axis; and releasing the corner suction gripper.
2. The method as claimed in claim 1, further comprising selectively securing a central suction unit brake to immobilize the central suction unit both rotationally and translationally and selectively releasing the central suction unit brake to make the central suction freely movable both translationally and rotationally.
3. The method as claimed in claim 1, further comprising applying spacer material by application of an insulated glass unit spacer applicator.
4. The method as claimed in claim 1, further comprising applying the spacer material by application of a spacer clamp, a spacer corner notcher and a spacer cutter coupled to and movable with the insulated glass unit spacer applicator.
5. The method as claimed in claim 3, further comprising applying the spacer material by application of a corner gripper backer block that is selectively shiftable between a downwardly bearing position and an upward retracted position.
6. The method as claimed in claim 3, further comprising applying the spacer material by application of a corner press block that is selectively shiftable from a retracted position to a spacer corner pressing position.
7. The method as claimed in claim 3, further comprising applying the spacer material by application of a spacer clamp coupled to a spacer clamp traveler, the spacer clamp being operably shiftable linearly between an advanced position and a retracted position.
8. The method as claimed in claim 1, further comprising abutting the workpiece against an alignment fence coupled to the applicator and oriented generally parallel to and outwardly of the edge of the workpiece supporting structure.
9. The method as claimed in claim 1, further comprising: a applying the adhesive material by use of a first directional edge sensor and a second directional edge sensor coupled to the applicator; sensing a location of a first edge of the glass workpiece and sensing a location of a second edge of the glass workpiece.
10. The method as claimed in claim 1, further comprising applying a secondary edge sealant.
11. The method as claimed in claim 10, further comprising applying the secondary edge sealant by application of a metering pump, a dispensing nozzle and a depth sensor.
12. The method as claimed in claim 11, further comprising applying the secondary edge sealant by application of a ski and a dispensing orifice defined by the dispensing nozzle.
13. The method as claimed in claim 1, further comprising supporting the glass workpiece via a weight compensation unit that provides an upward force on the central suction unit to at least partially compensate for a weight of the glass workpiece.
14. The method as claimed in claim 13, further comprising operating the weight compensation unit further by application of a pneumatic cylinder coupled to a regulator.
15. The method as claimed in claim 14, further comprising controlling the regulator by a computer or milliamp input to adjust air pressure in response to the weight of the glass workpiece.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Subject matter hereof may be more completely understood in consideration of the following detailed description of various embodiments in connection with the accompanying figures, in which:
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(16) While various embodiments are amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the claimed inventions to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter as defined by the claims.
DETAILED DESCRIPTION OF THE DRAWINGS
(17) Referring to
(18) Traveler 12 generally supports applicator 20. Applicator 20 generally includes structure that applies adhesive material to a workpiece such as an insulated glass unit or glass pane (not shown). Applied adhesive material can be, for example, adhesively adherent spacer or adhesive secondary edge sealant.
(19) In one example embodiment, table 16 is sized to accommodate glass panes (not shown) or insulated glass units (not shown) ranging in size from approximately 12×12 inches to 60×60 inches.
(20) Applicator 20 generally includes applicator head 22. Applicator head 22 in one example embodiment generally includes spacer feed system 24 and spacer attachment system 26. Spacer feed system 24 generally includes applicator feed slide 28, applicator feed cylinder 30 and spacer clamp 32. Applicator feed slide 28 is supported slidable and operately coupled to applicator feed cylinder 30 to move spacer clamp 32. Spacer clamp 32 is supported by spacer clamp traveler 34.
(21) Spacer attachment system 26 generally includes spacer roller 36 and corner press block 38. Spacer roller 36 is sized to press spacer material against a glass workpiece (not shown).
(22) Spacer roller 36 is raised and lowered by spacer roller cylinder 40. Corner press block 38 is raised and lowered by corner press block cylinder 42. Applicator head 22 also supports waste vacuum intake 44.
(23) Traveler 12 also supports first direction edge sensor 46, second direction edge sensor 48 and stepper motor 50. First direction edge sensor 46 is adapted to identify a first end of rack 14 while second direction edge sensor 48 is adapted to identify a second end of rack 14. Traveler 12 is operably engaged to rack 14 so that stepper motor 50 may move traveler 12 back and forth along rack 14.
(24) Traveler 12 also supports corner suction gripper 52 and corner gripper backer block 54. Corner suction gripper 52 is a suction cup like device coupled to a selectively activateable vacuum source. Corner gripper backer block 54 is located above a glass workpiece and is adapted to apply pressure downwardly thereon. Corner suction gripper 52 is coupled to corner suction gripper cylinder 56. Corner suction gripper cylinder 56 acts vertically to raise and lower corner suction gripper 52.
(25) Applicator head 22 also includes spacer corner notcher 58 and spacer cutter 60. Spacer corner notcher 58 is adapted to notch an inner corner of a spacer to provide clearance for the spacer being bent ninety degrees at a corner. Spacer cutter 60 is adapted to sever the spacer completely.
(26) Table 16 generally includes air table top 62 and blower 64. Air table top 62 is operably coupled to blower 64 and is pierced by a plurality of openings (not shown). Air table top 62 and blower 64 are generally conventional and are similar to those known in the art.
(27) Table 16 also supports central suction gripper 66 and off center suction gripper 68. Central suction gripper 66 is slidably coupled to slide 70 and travels within central slot 72. Central slot 72 can be an opening cut in table 16. Central suction gripper 66, according to an example embodiment of the invention, may also include axial brake 74 and rotational brake 76. Axial brake 74 can be applied to arrest the movement of central suction gripper 66 relative to slide 70, rotational brake 76 can be applied to arrest the rotational movement of central suction gripper 66. Central suction gripper 66 is generally passive in its rotational and translational movement relative to slide 70. However, according to an example embodiment of the invention, central suction gripper 66 may also be coupled to a locating unit (not shown). Central suction gripper 66 is adapted to grip a glass workpiece as controlled to do so.
(28) Single axis applicator 10 also includes, according to one example embodiment of the invention, spacer supply drum 78. Spacer supply drum 78 generally includes spacer drum 80, adapted to hold a spool of spacer material, base 82 to support spacer drum 80 and outfeed guide 84. Spacer supply drum 78 may be free standing and positioned adjacent the device or may be incorporated into single axis applicator 10.
(29) According to another embodiment of the invention, applicator 20 may further include workpiece fence 86. Workpiece fence 86 may also include fence abutment sensor 88. Fence abutment sensor 88 according to an example embodiment, is shiftable between an extended position and a retracted abutment sensing position.
(30) According to another embodiment of the invention, central suction gripper 66 further includes a biasing or drive mechanism 90 that may assist in positioning central suction gripper 66 to assist in loading, squaring or turning the workpiece. For example, in the case of a workpiece having a high aspect ratio, when a long side of the workpiece is abutted against workpiece fence 86 at the applicator side of table 16, it may be beneficial to assist starting of rotational movement of the workpiece by application of a small force on central suction gripper 66 axially away from workpiece fence 86. This force is applied by biasing or drive mechanism 90. A force axially toward workpiece fence 86 may be useful in squaring the workpiece against workpiece fence 86. A force applied to central suction gripper 66 to position it in the rough center of the workpiece may be useful when initially loading the workpiece onto the table 16.
(31) According to another embodiment of the invention, corner suction gripper 52 includes rotational encoder 92 that senses the rotational movement of corner suction gripper 52 as the workpiece is turned. Output from rotational encoder 92 can be used to sense when the workpiece has turned nearly ninety degrees and to control speed of movement of corner suction gripper 52 as the workpiece approaches contact with workpiece fence 86 at the end of the turning event. Alternately, a rotational encoder 92 can be coupled with central suction gripper 66.
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(33) High volume metering pump 150 in an example embodiment, is a positive displacement gear metering pump. Other types of metering pumps may be used as well.
(34) For example, in one embodiment of the invention, a fifteen gallon per minute pump is utilized so that it operates at thirty to fifty rpm instead of its maximum capacity of approximately two hundred rpm. High volume metering pump 150 is coupled to sealant supply 130 in which sealant is supplied under pressure to high volume metering pump 150. High volume metering pump 150 is also coupled to dispensing nozzle 152. Electrically or pneumatically controlled dispensing valves 161 may be interposed between high volume metering pump 150 and dispensing nozzle 152.
(35) In one example embodiment, dispensing nozzle 152 generally includes body 164, which defines dispensing orifice 166, ski 168 and quick change coupling 170. Dispensing nozzle 152 will be further described below.
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(38) IGU contact surface 182, according to one embodiment of the invention, is mirror polished to present a very smooth surface. As can be seen in
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(51) The glass workpiece is abutted against workpiece fence 86. In doing so, fence abutment sensor 88 is pressed inward until it is even with workpiece fence 86.
(52) Applicator 20 is then activated. First direction edge sensor 46 senses an edge of the glass workpiece. First direction edge sensor 46 is located a known distance from a first end of the spacer material as applied. The position of applicator 20 is adjusted so that the output of applicator 20 is at the desired location near a first corner of the glass workpiece. Traveler 12 then begins from its start position and travels to its end position while applicator 20 applies an adhesive spacer or edge sealant to the glass workpiece. Second direction edge sensor 48 identifies the second edge of the glass workpiece. Second direction edge sensor 48 is a known distance from the output of applicator 20 and thus applicator 20 travels to a precise location at the second edge of the glass workpiece. Traveler 12 and applicator 20, then are moved to locate corner suction gripper 52 proximate a corner of the glass workpiece. Corner suction gripper 52 is engaged to the glass workpiece by suction and corner gripper backer block 54 is moved into contact with the glass workpiece thus gripping the glass workpiece between corner suction gripper 52 and corner gripper backer block 54.
(53) Traveler 12 along with applicator 20 then moves in a returned direction to its starting point, in doing so, corner suction gripper 52 is moved linearly while the glass workpiece pivots about central suction gripper 66. While traveler 12 and applicator 20 are moving in a return direction, central suction gripper 66 is free to move linearly and rotationally because rotational brake 76 and axial brake 74 are released.
(54) At the same time, fence abutment sensor 88 is extended relative to workpiece fence 86. As the glass workpiece turns, it comes into contact with fence abutment sensor 88 pressing fence abutment sensor 88 until it is even with workpiece fence 86. At this point, traveler 12 along with applicator 20 stops moving and a second edge of the glass workpiece is now parallel with and abutting workpiece fence 86. The second edge of the glass workpiece is also parallel with linear edge 18. Axial brake 74 and rotational brake 76 are activated to secure central suction gripper 66 against rotation. Further, off center suction gripper 68 is activated to grip the glass workpiece at an off center location. The combined action of axial brake 74, rotational brake 76 and off center suction gripper 68 serves to secure the glass workpiece in a fixed orientation with its edge parallel to the travel of traveler 12 and applicator 20.
(55) In the case in which applicator 20 is a spacer applicator, applicator head 22 advances, for example, to the right front corner of the glass workpiece. Spacer material is applied to the glass workpiece and pressed against the glass workpiece by spacer roller 36 as applicator head 22 travels along the glass workpiece. When applicator head 22 reaches the left front corner, spacer corner notcher 58 is activated to make a corner notch in the spacer material. Spacer feed system 24 is activated to create slack in the spacer material which is still attached to the piece of spacer material that is secured along a first edge of the glass workpiece. Corner suction gripper 52 is activated and corner gripper backer block 54 is activated. Applicator head 22 then returns to the right hand position while taking the corner of the glass workpiece with it. The glass workpiece pivots on central suction gripper 66 which is free to rotate and translate. Prior to return of applicator head 22 to the original position, off center suction gripper 68 is deactivated and axial brake 74 and rotational brake 76 are deactivated.
(56) When fence abutment sensor 88 is pressed inward by the glass workpiece and senses that the glass workpiece is firmly against workpiece fence 86, off center suction gripper 68, axial brake 74 and rotational brake 76 are reactivated.
(57) If Table 16 is an air table, blower 64 is activated to blow air through air table top 62 while the glass workpiece is rotated. After the glass rotation, applicator feed slide 28 and applicator feed cylinder 30 are actuated to apply spacer material to the second side of the glass workpiece, corner press block 38 is lowered to secure the spacer at the corner and spacer roller 36 is activated to press the spacer material against the glass workpiece.
(58) The process is repeated until the fourth corner of the glass workpiece is reached. Then spacer cutter 60 is activated to sever the spacer material from its roll and corner press block 38 is activated to press the spacer material firmly against the glass workpiece. When the glass workpiece has spacer material applied to all four edges, central suction gripper 66 is deactivated, off center suction gripper 68 is deactivated, blower 64 is activated, if an air table is used, and the glass workpiece is manually slid off the table.
(59) In the event that applicator 20 is a sealant dispenser 126, a similar cycle is used. In this event, the glass workpiece is an insulated glass unit with two panes of glass and spacer material already applied between the two panes of glass. The glass workpiece is located on the table and abutted against workpiece fence 86 activating fence abutment sensor 88. Central suction gripper 66 is activated. Off center suction gripper 68 is activated. Blower 64 is deactivated, if an air table is used. Once the dispensing nozzle 152 is in position against the glass workpiece, depth sensor 154 judges the depth of the space into which the sealant materials to be dispensed. Dam 156 is advanced to abut a corner of the insulated glass unit. High volume metering pump is activated to dispense sealant material via dispensing orifice 166. Once the corner area is filled dam 156 is retracted. Ski 168 is in contact with the edge of the insulated glass unit and sealant material is dispensed and smoothed by ski 168 as it moves along the edge of the insulated glass unit. When sealant dispenser 126 reaches the second end of the side of the insulated glass unit, high volume metering pump 150 is deactivated and sealant stops exiting dispensing nozzle 152. Central suction gripper 66 remains secured to the insulated glass unit while off center suction gripper 68 is deactivated and axial brake 74, rotational brake 76 are deactivated. Corner suction gripper 52 is activated and sealant dispenser 126 returns to its start position along with traveler 12. The operation continues in this way turning the insulated glass unit as each side is completed as discussed above.
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(61) In operation, vertical single axis applicator 190 operates similarly to the other embodiments described herein. A glass workpiece (not shown) is placed on the table in a nearly vertical orientation. Central suction gripper 66 and off center suction gripper 68 are actuated to grip the glass workpiece. Optionally, blower 64 is actuated to provide negative pressure to air table top 62 to further support the glass workpiece.
(62) The present invention may be embodied in other specific forms without departing from the spirit of the essential attributes thereof; therefore, the illustrated embodiments should be considered in all respects as illustrative and not restrictive, reference being made to the appended claims rather than to the foregoing description to indicate the scope of the invention.
(63) Various embodiments of systems, devices, and methods have been described herein. These embodiments are given only by way of example and are not intended to limit the scope of the claimed inventions. It should be appreciated, moreover, that the various features of the embodiments that have been described may be combined in various ways to produce numerous additional embodiments. Moreover, while various materials, dimensions, shapes, configurations and locations, etc. have been described for use with disclosed embodiments, others besides those disclosed may be utilized without exceeding the scope of the claimed inventions.
(64) Persons of ordinary skill in the relevant arts will recognize that the subject matter hereof may comprise fewer features than illustrated in any individual embodiment described above. The embodiments described herein are not meant to be an exhaustive presentation of the ways in which the various features of the subject matter hereof may be combined. Accordingly, the embodiments are not mutually exclusive combinations of features; rather, the various embodiments can comprise a combination of different individual features selected from different individual embodiments, as understood by persons of ordinary skill in the art. Moreover, elements described with respect to one embodiment can be implemented in other embodiments even when not described in such embodiments unless otherwise noted.
(65) Although a dependent claim may refer in the claims to a specific combination with one or more other claims, other embodiments can also include a combination of the dependent claim with the subject matter of each other dependent claim or a combination of one or more features with other dependent or independent claims. Such combinations are proposed herein unless it is stated that a specific combination is not intended.
(66) Any incorporation by reference of documents above is limited such that no subject matter is incorporated that is contrary to the explicit disclosure herein. Any incorporation by reference of documents above is further limited such that no claims included in the documents are incorporated by reference herein. Any incorporation by reference of documents above is yet further limited such that any definitions provided in the documents are not incorporated by reference herein unless expressly included herein.
(67) For purposes of interpreting the claims, it is expressly intended that the provisions of 35 U.S.C. § 112(f) are not to be invoked unless the specific terms “means for” or “step for” are recited in a claim.