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Mold with an on-board counter or monitor
| Details |
Inventors: Starkey, Glenn;
Assignee: D & L Incorporated (Wauconda, IL)
Primary Examiner: Heitbrink; Tim
Assistant Examiner:
Attorney, Agent or Firm: Fitch, Even, Tabin & Flannery
An injection plastic mold is provided with its own on-board monitor or counter, which is actuated with each opening and closing cycle of the mold to maintain a count of the operating cycles performed. This count is maintained with the mold, whether the mold is on the press or a storage rack. The counter or monitor is relatively inexpensive and unobtrusive and is capable of withstanding harsh temperatures and shock that are encountered in an injection molding environment. The counter or stroke monitor may be either a mechanical counter or an electrical counter which is incorporated into a mold half to remain with the mold when it is stored away from a molding machine, when operated during an initial set-up operation, and when operated during a production run. Whether an on-board mechanical counter or an on-board electrical counter, the counter is hermetically sealed against the intrusion of damaging liquids or chemicals and is mounted in a protective housing to protect against shock, etc. An actuating mechanism is associated with the counter with the counter and its actuating mechanism secured to one of the mold halves so that the actuating mechanism causes the counter to advance and register a count with each molding cycle. |
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DETAILED DESCRIPTION In accordance with the present invention, an injection plastic mold is provided with its own electrical monitor or counter and battery, which is actuated with each opening and closing cycle of the mold to maintain a count of the operating cycles performed.
This count is maintained with the mold, whether the mold is on the press or a storage rack.
The counter or monitor must be relatively inexpensive and unobtrusive and capable of withstanding harsh temperatures and shock that are encountered in an injection molding environment.
By incorporating electrical batteries into the counter, the cycle and other information is retain when the mold is removed from the press and stored on a storage shelf.
The preferred electrical monitor includes an actuator which is engagable by another part of the press upon opening and closing the press to provide a count of the number of cycles of the press.
Preferably, the electrical monitor also includes a clock to time a molding cycle and a means to provide an average production cycle time for the molder.
It is preferred that the particular electrical monitor also have the capability of having a date or calendar means so that the date of usage of the mold is also stored in memory.
Thus, the mold monitor may be interrogated to provide the dates on which the mold was in production and the production cycles for this usage period so that the history may be readily known particularly, when the mold is replaced in the press in just-in-time manufacturing to produce parts on an as-needed basis.
The monitor also may have a settable counter switch that is set to a predetermined count at which maintenance should be done.
When the mold has been cycled through to the previously set count, an alarm or indicator is operated to alert the operator that it is time to perform mold maintenance.
In accordance with another aspect of the invention, the preferred monitor also is programmable to the extent that the mold serial number and/or part name, part number or other identifying factors with respect to a particular part may be acquired from the monitor
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