Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Including support or guide means for disassembled element
Patent
1986-08-25
1988-07-19
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
Including support or guide means for disassembled element
100918, 425190, 425195, 72481, B29C 4506
Patent
active
047581476
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an automatic die exchanger for an injection molding machine, which can automatically exchange a die of an injection molding machine with a simple structure and a simple operation.
When an injection molding system for plastic molding is systematized for the purpose of automatization and energy savings, the control system of the injection molding machine must be improved and, at the same time, a total system of the injection molding machine and peripheral equipment must be systematized. As one of the methods for this purpose, automatic die exchange is proposed. However, a conventional automatic die exchanger consists of a die stock section using an automated warehouse or the like, a convey unit utilizing an unmanned convey vehicle and an overhead traveling crane, and a control section for controlling the die stock section and the convey unit. In exchanging a die, after the die is removed from an injection molding machine, it is conveyed to the die stock section by the convey unit and is stored therein. Thereafter another die is fetched from the die stock section, is conveyed to the injection molding machine by the convey unit, and is mounted thereon. Since systems of this type tend to be of a large scale and require a high cost, they are not widely used.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an automatic die exchanger in which the above conventional drawbacks are eliminated and which can automatically exchange a die of an injection molding machine with a simple structure and a simple operation.
In order to achieve the above object, in an automatic die exchanger for an injection molding machine of the present invention, a plurality of die placing sections are provided on a rotational table at angular intervals, a travel member capable of travelling between a die placing section and a die mounting section of the injection molding machine is provided, and a convey means is provided on the travel member. The convey means is engaged with a die, feeds the die from the die placing section to the die mounting section, and conveys the die from the die mounting section to the die placing section.
In this manner, in the automatic die exchanger of the present invention, a die which is selected by rotating the rotational table is brought to oppose the die mounting section of the injection molding machine, the convey means which is integrally movable with the travel member is engaged with the die, and the die is thus fed to or removed from the injection molding machine. Therefore, die exchange can be automatically performed without a need for a large-scale apparatus for die exchange and with a simple operation.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of an automatic die exchanger of an injection molding machine according to an embodiment of the present invention;
FIG. 2 is a plan view of the die exchanger shown in FIG. 1 from which a die convey section is removed;
FIG. 3 is a partially sectional right-side view of the die exchanger shown in FIG. 1; and
FIG. 4 is a plan view of the die convey section shown in FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIGS. 1 to 4 show an automatic die exchanger of an injection molding machine according to an embodiment of the present invention. The automatic die exchanger is provided behind the injection molding machine (only a die clamping section thereof is shown by 5a' as a die mounting section). In the automatic die exchanger, reference numeral 1 denotes a rotational table extending in a horizontal direction; 2, a rotating shaft (refer to FIG. 3) having an upper end fitted in a vertical central hole of the rotational table 1 and supporting the table 1 to be capable of rotating therewith; and 3, a machine frame obtained by assembling a plurality of frames in a substantially cubic manner. The rotating shaft 2 is supported by a support frame 3a fixed on the central portion of the bottom frame of the machine frame 3. A sprocket S1 fixed to the lower
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Fanuc Ltd.
Hoag Willard E.
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