Vibration Based Injection Molding Machine Damage Detection and Health Monitoring
First Claim
1. A detection system comprising:
- a component of an injection molding machine;
a sensor operatively coupled to said component of said injection molding machine, said sensor configured to transmit a signal representative of a movement of at least said component of said injection molding machine; and
a processor configured to convert said signal into a frequency domain signal and to determine changes in structural dynamics of said injection molding machine indicative of structural damage to said injection molding machine.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method for evaluating the structural integrity of an injection molding machine and/or a component thereof may comprise at least one sensor operatively connected to a component of the injection molding machine. The sensor may transmit a signal representative of the movement of the injection molding machine. A processor may convert this signal into a frequency domain signal and compare it against a frequency template. Changes to the structural integrity of the injection molding machine may result in changes to the system'"'"'s frequency response spectrum such as, but not limited to, amplification of certain frequency peaks, amplitude variations, changes in the damping characteristics, the shifting of the fundamental mode (i.e., the first natural frequency), shifting of higher order modes (those above the fundamental mode), or the introduction of a new frequency mode of vibration that did not exist prior to the damage of the component.
20 Citations
35 Claims
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1. A detection system comprising:
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a component of an injection molding machine; a sensor operatively coupled to said component of said injection molding machine, said sensor configured to transmit a signal representative of a movement of at least said component of said injection molding machine; and a processor configured to convert said signal into a frequency domain signal and to determine changes in structural dynamics of said injection molding machine indicative of structural damage to said injection molding machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of evaluating a structural integrity of an injection molding machine comprising:
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generating a signal representative of a movement of at least one component of said injection molding machine; and analyzing said signal to determine changes in structural dynamics of said injection molding machine indicative of structural damage to said injection molding machine. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A detection system comprising:
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a sensor configured to transmit a signal representative of a movement of at least one component of said injection molding machine; and a processor configured to analyze said signal and to determine changes in structural dynamics of said injection molding machine indicative of structural damage to said injection molding machine. - View Dependent Claims (34, 35)
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Specification