Power embossing apparatus

An embossing machine comprising in combination:

• first and second spaced apart die holder means for receiving embossing dies of the type designed to emboss sheet material placed therebetween;
• a base support member for fixedly holding said first die holder means;
• a ram positioned adjacent said base support member with said second die holder means secured thereto, means mounting said ram to produce a ram stroke of relatively linear movement toward and away from said first die holder means;
• electrically powered drive means including a drive motor which is energized throughout the embossing cycle;
• means operatively coupling said drive motor to said ram and including means providing for a dwell in the movement of said ram at the upper portion of the ram stroke;
• control means for energizing said drive means to produce movement of said ram and said second die holder means toward and away from said first die holder means during an embossing cycle, said control means including actuating means responsive to the positioning of sheet material between said first and second die holder means and thereupon supplying power to energize said drive motor and commence the embossing cycle, and means for de-energizing said drive motor upon completion of the embossing cycle, and when said ram is at the upper, dwell portion of the ram stroke, said means for de-energizing the drive motor including a switch in circuit with said drive motor and having an actuator member, and a switch actuating element related to the position of said ram to engage said actuator member upon completion of the embossing cycle thereby to operate said switch and interrupt the supply of power to said drive motor, thereby de-energizing and terminating the embossing cycle automatically after but a single embossing stroke, and with the ram in the upper dwell portion of said ram stroke.

An embossing machine comprising in combination:

• first and second spaced apart die holder means for receiving embossing dies of the type designed to emboss sheet material therebetween;
• a base support member for fixedly holding said first die holder means;
• a ram position adjacent said base support member with said second die holder means secured thereto, means confining said ram to relatively linear movement toward and away from said first die holder means, electrically powered drive means and means operatively coupling said drive means to said ram, control means for energizng said drive means to produce movement of said ram and said second die holder means toward and away from said first die holder means during an embossing cycle, said control means including actuating means responsive to the positioning of sheet material between said first and second die holder means and thereupon supply the power to energize said drive motor and commence the embossing cycle, and means for de-energizing said drive means upon completion of the embossing cycle, said means for de-energizing the drive means including a switch in circuit with said drive means and having an actuator member, and a switch actuating element related to the position of said ram to engage said actuator member upon completion of the embossing cycle thereby to operate said switch and interrupt the supply of power to said drive means thus de-energizing and terminating the embossing cycle automatically after but a single embossing stroke, said means for operatively coupling said drive means to said ram, including an arm pivotally secured to said base support member and having one end thereof coupled to said ram, a close loop cam surface formed in the opposite end of said arm and a cam member engageable with said close loop cam surface and rotatably connected to said drive means wherein rotation of said cam in engagement with the cam surface will produce pivoting of said arm and correspondingly, linear movement of said ram.

An embossing machine comprising in combination:

• first and second spaced apart die holder means for receiving embossing dies of the type designed to emboss sheet material placed therebetween, a base support member for fixedly holding said first die holder means, a ram positioned adjacent said base support member with said second die holder means secured thereto, means confining said ram to relatively linear movement toward and away from said first die holder means, electrically powered drive means, and means operatively coupling said drive means to said ram, control means for energizng said drive means to produce movement of said ram and said second die holder means toward and away from said first die holder means during an embossing cycle, said control means including actuating means responsive to the positioning of sheet material between said first and second die holder means and thereupon supplying power to said drive means to initiate movement from an initial starting position, said means provided for operatively coupling said drive means to said ram including an arm pivotally secured to said base support member intermediate the ends thereof, one end of said arm being operatively coupled to said ram, a closed loop cam surface formed in the opposite end of said arm, and a cam member engageable with said closed loop cam surface and connected to said drive means for rotation therewith, whereby rotation of said cam in engagement with said closed loop cam surface will produce rocking of said arm and correspondingly linear movement of said ram, said closed loop cam surface being of an elongate, oval configuration having a first dwell portion at the portion thereof corresponding to the lowermost point in the path of travel of said ram, thereby enabling the dies to apply pressure to the sheet material therebetween for a predetermined time interval so that the sheet material will flow during embossment, and a second dwell portion corresponding to the uppermost point in the path of travel of said ram to maintain said ram in said starting position at the end of the embossing cycle.