Plastic article or earthenware shaping or treating: apparatus – With safety feature
Patent
1995-10-03
1997-09-23
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
With safety feature
425169, 425574, 425DIG45, B29C 4584
Patent
active
056701861
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an injection molding machine provided with a display unit for displaying data such as an operation state of the machine.
2. Description of the Prior Art
A motor-driven injection molding machine using an NC unit sets various data values, interprets and monitors operation states, and displays a message for transfer of an alarm on a display unit such as a CRT. Moreover, the display unit is provided with a manual data input (MDI) so that an operator can easily set a value while viewing the screen. Therefore, a display unit set on an injection molding machine is not only important in performing injection molding operations but also is required to be easy for the operator to use.
Stand-type, built-in-type, and pendant-type display units, etc., for example, are known as existing display units used for injection molding machines.
The stand-type display unit consists of a display unit mounted on the top of a stand erected on a floor. The built-in-type display unit is designed so that its display section can be stored in the space in the base of an injection molding machine. The pendant-type display unit is disclosed, for example, in the official gazette of Japanese Patent Application KOKAI 83-107534 Laid-Open, which is designed so that the display section of the unit can be hung on the front end of a horizontally rotatable arm. With this structure, the display unit can be retracted into the space provided at the top of an injection molding machine when it is not needed and pulled out when it is needed.
However, existing display units for an injection molding machine have the following problems. For example, the stand-type display unit has a problem that the display unit requires a large space because the unit projects around the machine and is always present on a floor. Another problem is that the standing type display unit sometimes hinders the movement of the operator or the conveyance of the materials.
The pendant-type display unit has a problem that the display unit requires a large space because the unit is designed so as to protrude to the outside of an injection molding machine. Moreover, as the display section is hung, a rotary arm must be set at a higher level corresponding to the vertical dimension of the display section, and the length of the rotary arm needs to be limited so that the rotary arm, as a cantilever, remains capable of supporting a heavy display unit at its front end, and thus the distance between the operating position and retracted position for the display unit is not necessarily adequate. Furthermore, since it is necessary to prevent the display section from colliding with any of the members of the injection molding machine during rotation, the screen is inevitably required to be located at a position higher than the normal level of the eyes of an operator and so, it is inconvenient for the operator to turn its eyes from the operating panel located on the side of the injection molding machine to the display screen located almost in front or a little below the front to the display screen, and this poses a problem in view of the facility of operation.
In the case of the built-in-type display unit, the display section is installed at the base side of an injection molding machine. Therefore, there is a difference in height between the display section and the molding section, and so when an operator looks at the injection molding machine directing his eyes almost straightforward, the position of the screen is lower than the level of his eyes, and thus this is inconvenient for the operator to set data or interpret and monitor an operating state.
Also, it is possible to install the display unit inside the fixed-plate cover. However, in most instances, the fixed-plate cover has a small width. Therefore, the allowable size of a display unit for installation is limited, and thus only a small-size display unit is installable.
SUMMARY OF THE INVENTION
There is an increasing demand for large-size display units i
REFERENCES:
patent: 3728057 (1973-04-01), Grundmann et al.
patent: 4775309 (1988-10-01), Hehl
patent: 4976598 (1990-12-01), Hehl
patent: 5310332 (1994-05-01), Ito et al.
Ito Susumu
Koyama Hideki
Nishimura Koichi
Yoshida Hiroko
Fanuc Ltd.
Heitbrink Tim
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