[특허]Interchangeable mold tooling

Delta Engineered Plastics

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Interchangeable mold tooling

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-045/10 B29C-033/38 B23P-011/00
미국특허분류(USC)	425/192R; 264/328.16; 029/525.01; 029/426.2
출원번호	US-0934738 (2009-03-26)
등록번호	US-8128394 (2012-03-06)
국제출원번호	PCT/US2009/038358 (2009-03-26)
§371/§102 date	20101223 (20101223)
국제공개번호	WO2009/120838 (2009-10-01)
발명자 / 주소	Desmith, Brian L. Mozer, Wilfried Zawacki, Jeffrey R.
출원인 / 주소	Delta Engineered Plastics
대리인 / 주소	Brooks Kushman P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 45

초록
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Tooling assemblies for interfacing with interchangeable molds are provided, each with a tooling body for mounting to a platen of a press of an injection molding machine and for receiving an interchangeable mold block. Interchangeable mold blocks are also provided for forming articles. A series of fasteners fasten each mold block to one of the tooling bodies. Alignment systems are oriented within a perimeter of the mold block to permit expansion of the mold block relative to the tooling body to accommodate varying rates of thermal expansion of the tooling...

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1. A tooling assembly with an interchangeable mold block, the tooling assembly comprising: a tooling body having a first surface adapted to be mounted to a platen of a press of an injection molding machine and a second surface that is opposed from the first surface and adapted for receiving an interchangeable mold block mounted thereto;a series of fasteners mounted on the second surface for fastening the mold block thereto;an alignment system having at least one first guide bar or guide groove mounted on the second surface of the tooling body for aligning the mold block to the tooling body, the alignment system being oriented at and within a perimeter of the mold block to permit expansion of the mold block relative to the tooling body to accommodate varying rates of thermal expansion of the tooling body and the mold block;the interchangeable mold block capable of forming an article, and comprising:a mold block body having a first surface adapted to be mounted to the tooling body second surface, a second surface of the mold block body that is opposed from the mold block body first surface for engaging another mold block body, and a forming surface for collectively forming an article with a forming surface of the other mold block body in a forming operation;a second series of fasteners mounted on the mold block body first surface for fastening the mold block body to the tooling body second surface; anda second alignment system having at least one second guide bar or guide groove mounted on the mold block body first surface for cooperating with the first guide bar or guide groove and aligning the mold block to the mold tooling assembly, the alignment system being oriented at and within a perimeter of the mold block body to permit expansion of the mold block body relative to the mold tooling assembly to accommodate varying rates of thermal expansion of the mold tooling assembly and the mold block body. 2. The tooling assembly of claim 1 wherein the body includes a manifold for fluid communication with the injection molding machine for receiving heated resin therefrom; and wherein the tooling assembly further comprises a series of drops extending from the second surface in fluid communication with the manifold for receiving the heated resin from the manifold and conveying the heated resin to the mold block. 3. The tooling assembly of claim 2 further comprising a series of electronically controlled valve gates oriented in the tooling body, each in fluid communication between the manifold and one of the series of drops for regulating and metering the distribution of the heated resin through the drops and consequently to the mold. 4. The tooling assembly of claim 1 wherein the alignment system further comprises centrally oriented keys or keyways. 5. The tooling assembly of claim 1 further comprising an ejection system for ejecting a molded article from the mold block. 6. The tooling assembly of claim 1 wherein the tooling body further comprises: a first plate providing the tooling body first surface;a plurality of supports mounted to the first plate;a second plate mounted to the plurality of supports spaced apart from the first plate, the second plate providing the tooling body second surface;a plurality of actuators mounted to the tooling body; andan ejection plate disposed between the first plate and the second plate and connected to the actuators to be translated by the actuators for driving an ejector in the mold block. 7. The tooling assembly of claim 6 further comprising a series of ejector shafts mounted to the ejection plate for driving the ejector in the mold block. 8. The tooling assembly of claim 6 wherein a plurality of apertures are formed through the second plate to receive ejection shafts from the mold block therethrough such that the ejection plate engages the ejections shafts for actuating the ejection shafts for ejecting a molded article from the mold block. 9. The tooling assembly of claim 1 wherein the series of fasteners further comprise a series of locking cylinder actuators for receiving and locking a corresponding series of knobs that are mounted to the mold block for fastening the mold block to the tooling body. 10. The tooling assembly of claim 1 wherein the tooling assembly body includes a manifold for fluid communication with the injection molding machine for receiving heated resin therefrom; and wherein the tooling assembly further comprises a series of drops extending from the second surface in fluid communication with the manifold for receiving the heated resin from the manifold and conveying the heated resin to the mold block; andwherein the interchangeable mold block further comprises a series of plates, each with an aperture formed therethrough, each plate oriented adjacent the forming surface for receiving one of the series of drops for receiving the heated resin between the forming surfaces of the mold blocks. 11. The tooling assembly of claim 10 wherein the tooling body is further defined as a first steel tooling body; wherein the interchangeable mold block is further defined as a first aluminum interchangeable mold block;wherein the tooling assembly further comprises:a second steel tooling body having a first surface adapted to be mounted to a second platen of the press and a second surface that is opposed from the first surface and adapted for receiving a second interchangeable mold block mounted thereto,a second series of fasteners mounted on the second tooling body second surface for fastening the second mold block thereto,a second alignment system mounted on the second tooling body second surface for aligning the second mold block to the second tooling body, the second alignment system being oriented within a perimeter of the second mold block to permit expansion of the second mold block relative to the second tooling body to accommodate varying rates of thermal expansion of the second tooling body and the second mold block, anda second aluminum interchangeable mold block for forming the article, comprising:a second mold block body having a first surface adapted to be mounted to the second tooling body second surface, a second surface of the second mold block body that is opposed from the second mold block body first surface for engaging the second surface of the first mold block body, and a forming surface for collectively forming the article with the forming surface of the first mold block body in the forming operation,a series of fasteners mounted on the second mold block body first surface for fastening the second mold block body to the second tooling body second surface, andan alignment system mounted on the second mold block body first surface for aligning the second mold block to the second mold tooling assembly, the alignment system of the second mold block being oriented within a perimeter of the second mold block body to permit expansion of the second mold block body relative to the second mold tooling assembly to accommodate varying rates of thermal expansion of the second mold tooling assembly and the second mold block body; andwherein the first and second interchangeable mold blocks are sized to form a class three to class eight commercial truck bumper fascia that is approximately eight feet in width, two feet high and three feet in depth with a thickness of about three to about seven millimeters. 12. The tooling assembly of claim 1 wherein the tooling assembly body further comprises: a first plate providing the tooling body first surface;a plurality of supports mounted to the first plate;a second plate mounted to the plurality of supports spaced apart from the first plate, the second plate providing the tooling body second surface;a plurality of actuators mounted to and extending away from the second plate; andan ejection plate disposed between the first plate and the second plate and connected to the actuators to be translated by the actuators for driving an ejector in the mold block;wherein a plurality of recesses are formed in the mold block each oriented for providing clearance for one of the actuators. 13. The tooling assembly of claim 1 wherein the second series of fasteners further comprise a series of knobs; and wherein the first series of fasteners further comprise a series of locking cylinder actuators that are sized to receive and lock the knobs thereto. 14. The tooling assembly of claim 1 further comprising: at least one ejector shaft mounted to the mold block body for translation relative to the mold block body upon actuation by an actuator on the mold tooling assembly; andat least one lifter block mounted in a recess of the mold block body and providing part of the mold block body forming surface, the at least one lifter block being connected to the at least one ejector shaft so that translation of the at least one ejector shaft translates the at least one lifter block for ejecting a molded article from the mold block body. 15. A method for assembling a mold comprising: providing a first tooling assembly with a manifold, a series of drops extending therefrom in fluid communication with the manifold, a fastener system and an alignment system having first guide bars or guide grooves;mounting the first tooling assembly to a stationary platen of a press of an injection molding machine;connecting the manifold to a source of heated resin of the injection molding machine;providing a first interchangeable mold block with a series of input apertures, a fastener system and an alignment system having second guide bars or guide grooves;aligning the first interchangeable mold block alignment system with the first tooling assembly alignment system with the first guide bars or guide grooves cooperating with the second guide bars or guide grooves at and within a perimeter of the first interchangeable mold block, thereby also aligning the first interchangeable mold block input apertures with the first tooling assembly drops;fastening the first interchangeable mold block fastener system to the first tooling assembly fastener system;providing a second tooling assembly with an ejection actuator, a fastener system and an alignment system having third guide bars or guide grooves;mounting the second tooling assembly to a movable platen of the press;providing a second interchangeable mold block with an ejector, a fastener system and an alignment system having fourth guide bars or guide grooves;aligning the second interchangeable mold block alignment system with the second tooling assembly alignment system with the third guide bars or guide grooves cooperating with the fourth guide bars or guide grooves at and within a perimeter of the second interchangeable mold block; andfastening the second interchangeable mold block fastener system to the second tooling assembly fastener system. 16. A method for molding an article comprising: assembling a mold according to the method of claim 13;actuating the movable platen of the press such that the second interchangeable mold block is in engagement with the first interchangeable mold block;inserting heated resin into the first and second interchangeable mold blocks;heating or cooling the first and second interchangeable mold blocks;actuating the movable platen of the press such that the second interchangeable mold block is out of engagement with the first interchangeable mold block; andactuating the ejection actuator to translate the ejector, thereby ejecting the molded article. 17. A method for interchanging a mold comprising: assembling a mold according to the method of claim 15;unfastening the first interchangeable mold block fastener system from the first tooling assembly fastener system;removing the first interchangeable mold block from the first tooling assembly;providing a third interchangeable mold block with a series of input apertures, a fastener system and an alignment system having fifth guide bars or guide grooves;aligning the third interchangeable mold block alignment system with the first tooling assembly alignment system with the first guide bars or guide grooves cooperating with the fifth guide bars or guide grooves at and within a perimeter of the third interchangeable mold block, thereby also aligning the third interchangeable mold block input apertures with the first tooling assembly drops;fastening the third interchangeable mold block fastener system to the first tooling assembly fastener system;unfastening the second interchangeable mold block fastener system from the second tooling assembly fastener system;removing the second interchangeable mold block from the second tooling assembly;providing a fourth interchangeable mold block with an ejector, a fastener system and an alignment system having sixth guide bars or guide grooves;aligning the fourth interchangeable mold block alignment system with the second tooling assembly alignment system with the second guide bars or guide grooves cooperating with the sixth guide bars or guide grooves at and within a perimeter of the fourth interchangeable mold block; andfastening the fourth interchangeable mold block fastener system to the second tooling assembly fastener system.

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Interchangeable mold tooling

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