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1. 发明专利

CA1062223A MACHINE FOR ADVANCING STRIP MATERIAL THROUGH A UTILIZATION APPARATUS 未知
公开(公告)号：CA1062223A
公开(公告)日：1979-09-11
申请号：CA264850
申请日：1976-11-04
申请人： CHESNUT ENG
发明人： CHESNUT W RICHARD , CALLIGARO DANIEL
IPC分类号： B65H20/04 , B65H23/06 , B65H23/188
摘要： MACHINE FOR ADVANCING STRIP MATERIAL THROUGH A UTILIZATION APPARATUS A machine for providing strip material from a reel of the strip material to a utilization apparatus, such as a hot-foil stamping press, is disclosed. The various component parts of the machine are secured to a support means. Included is a reel carrier, which may be readily adjusted to accommodate reels of different widths, and which may include a coil spring in frictional engagement with a pulley attached to the axial core of the reel, which serves to apply a controlled drag and restoring torque to the reel. An optional elastic band in frictional engagement with the peripheral surface of the reel of strip material provides an additional drag torque which decreases as the strip materal is consumed from the reel, thereby resulting in a substantially constant tensile force applied to the strip material. The strip material is in frictional engagement with a motordriven metering roll, which serves to pull the strip material from the reel and to advance the strip material through the utilization apparatus. To assure positive frictional contact between the strip material and the metering roll, a nip roll may be placed in frictional engagement with the metering roll, and the strip material passed between and in frictional engagement with both the metering roll and the nip roll. To cushion the tensile stresses in the strip material resultin from intermittent operation of the metering roll, a spring-loaded cushion bar may be provided intermediate the reel of strip material and the metering roll. The spring-loaded cushion bar also contributes to maintaining,within predetermined limits, the tension of the strip material between the reel of strip material and the metering roll. One or more dashpots may be provided to absorb energy from the motion of the cushion bar, and thereby to dampen 1. its excursions. The dashpots may take the form of double-acting air cylinders, with adjustable flow control valves provided at the ports of such cylinders so as to permit independent adjustment of the damping forces associated with each direction of motion of the spring-loaded cushion bar. A stripper mechanism may also be provided to assist in releasing the strip material from within the utilization apparatus by applying a predetermined impulse of tension to the strip material. One form of the stripper consists of two fixed bars and a movable bar; the strip material is arranged to pass through the fixed bars and the movable bar in such a way that translation of the movable bar, in a direction perpendicular to its axis, alters the length of the strip material passing through the arrangement of bars. Means, such as one or more air-operated cylinders, is provided for causing translation of the movable bar, which thereby applies a predetermined impulse of tension to the strip material within the utilization apparatus so as to cause release of the strip material within the utilization apparatus. The air cylinders are typically connected through a solenoid valve to a source of pressurized air. The solenoid valve is energized, so as to actuate the air cylinders, at the appropriate times immediately prior to advancing the strip material. To insure that the movable bar remains parallel to the fixed bars during translation, a rack and pinion mechanism may be utilized at each end of the movable bar. The strip material passes from the stripper through the utilization apparatus to a means for receiving spent strip material The metering roll is driven by an electric motor, which nay be, for example, a digital stepping motor. One technique for mechanically coupling the electric motor to the metering roll 2. involves the use of pulleys and a timing belt. An electronic control means is provided for supplying electrical power to the electric motor so as to energize the motor to cause rotation of its shaft through a predetermined program sequence of advancing the strip material. Alternatively, a dc motor may be utilized with a shaft encoder, which serves to generate an electrica

2. 发明专利

CA1080611A ROTARY DIE LOCK STRUCTURE 未知
公开(公告)号：CA1080611A
公开(公告)日：1980-07-01
申请号：CA314673
申请日：1978-10-30
申请人： CHESNUT ENG
发明人： CHESNUT W RICHARD
IPC分类号： B21D28/14 , B26D7/26 , B26F1/44 , B41F27/12 , B30B15/02
摘要： ROTARY DIE LOCK STRUCTURE A rotary die is disclosed to include a roller having a transversely extending channel with bores formed therein, a die sheet wrapped around the roller and having a pair of its edges extending into the channel, the die sheet having shoulders formed on its edges, and locking means disposed within the channel and cooperating with the shoulders on the die sheet to cause tightening of the die sheet around the surface of the roller in response to the tightening of the locking means through the use of bolts securing the locking means to the tapped bores formed in the transverse channel.

3. 发明专利

AT150367T 未知
公开(公告)号：AT150367T
公开(公告)日：1997-04-15
申请号：AT91909111
申请日：1991-04-25
申请人： CHESNUT ENG
发明人： BRESSLER DAVID E , CALIGARO DANIEL , CHESNUT W RICHARD
IPC分类号： B41C1/045 , B41N1/12 , B41N1/22 , B41N10/00 , G03F7/038 , B41F3/38 , C08G59/18 , C08G59/40 , C08G59/68

4. 发明专利

CA2041201A1 ROTOGRAVURE PRINTING MEDIA AND METHODS OF MANUFACTURING A ROTOGRAVURE PRINTING DEVICE EMPLOYING THE MEDIA 未知
公开(公告)号：CA2041201A1
公开(公告)日：1991-10-27
申请号：CA2041201
申请日：1991-04-25
申请人： CHESNUT W R ENGINEERING INC
发明人： BRESSLER DAVID E , CHESNUT W RICHARD , CALIGARO DANIEL
IPC分类号： B41C1/045 , B41N1/12 , B41N1/22 , B41N10/00 , G03F7/038 , C08G8/28 , B41C1/00 , B41D7/04 , C08G59/00 , C08L61/14 , C08L63/00
摘要： A printing medium or image carrier for application to a printing apparatus or substrate which comprises a plastic composition which is applied to a printing substrate to form a plastic coating covering the substrate, which plastic coating is engraved to provide a printing medium. Preferred plastic compositions are those including epoxide resins such as cycloaliphatic epoxide resins, reaction products of epichlorohydrin and bisphenol A, bisphenol A epoxy resins modified with cresol novolac(s), epoxy-novolac resins, and epoxy-novolac based vinyl esters. The present invention provides for an effective rotogravure printing medium without the use and/or disposal of hazardous chemicals.

5. 发明专利

DK0526567T3 未知
公开(公告)号：DK0526567T3
公开(公告)日：1997-09-15
申请号：DK91909111
申请日：1991-04-25
申请人： CHESNUT ENG
发明人： BRESSLER DAVID E , CALIGARO DANIEL , CHESNUT W RICHARD
IPC分类号： B41C1/045 , B41N1/12 , B41N1/22 , B41N10/00 , G03F7/038 , B41F3/38 , C08G59/18 , C08G59/40 , C08G59/68

6. 发明专利

ES2101744T3 未知
公开(公告)号：ES2101744T3
公开(公告)日：1997-07-16
申请号：ES91909111
申请日：1991-04-25
申请人： CHESNUT ENG
发明人： BRESSLER DAVID E , CALIGARO DANIEL , CHESNUT W RICHARD
IPC分类号： B41C1/045 , B41N1/12 , B41N1/22 , B41N10/00 , G03F7/038 , B41F3/38 , C08G59/18 , C08G59/40 , C08G59/68

7. 发明专利

DE2852521A1 未知
公开(公告)号：DE2852521A1
公开(公告)日：1979-06-21
申请号：DE2852521
申请日：1978-12-05
申请人： CHESNUT ENG
发明人： CHESNUT W RICHARD
IPC分类号： B21D28/14 , B26D7/26 , B26F1/44 , B41F27/12 , B26F1/42

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