Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Reexamination Certificate
2000-09-07
2002-07-09
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
C425S577000, C425SDIG005
Reexamination Certificate
active
06416316
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to apparatuses and methods for molding resin products such as console boxes provided in vehicle passenger compartments, and, more particularly, to apparatuses and methods for molding resin products such as console boxes having a flange.
Generally, a shift lever is provided between a vehicle driver seat and an adjacent passenger seat for altering the vehicle speed. A console box is located behind the shift lever for accommodating, for example, music tapes or CD's. The console box is an integral body formed of synthetic resin and has an upper opening that is covered by a lid. The console box is opened and closed with the lid. A flat portion having a predetermined dimension is formed along the upper opening for supporting the lid.
FIGS. 13 and 14
each show examples of prior art console boxes. As shown in
FIG. 13
, a console box
71
has an outer side plate
72
and an inner side plate
73
and is formed as an integral body. The integral body is molded using a pair of molds that are vertically separated from each other. The console box
71
has a bent portion
74
formed between the outer side plate
72
and the inner side plate
73
. The bent portion
74
supports a lid (not shown) with which the console box
71
is opened and closed.
As shown in
FIG. 14
, a console box
81
includes an upper section
82
and a lower section
83
, which are separately molded. The upper section
82
is welded to the lower section
83
at a coupling portion
84
. The console box
81
includes an inward flange
85
formed along an upper end of the upper section
82
to face the interior of the box
81
. The flange
85
supports a lid (not shown) with which the console box
81
is opened and closed.
The console box
71
of
FIG. 13
has a double-walled structure having the outer side plate
72
and the inner side plate
73
. This structure reduces the capacity of the console box
71
. Further, since the console box
71
has the inner side plate
73
and the outer side plate
72
, a relatively large amount of resin material is required for forming the console box
71
. This increases costs.
In contrast, the console box
81
of
FIG. 14
has a relatively large capacity. However, since the console box
81
includes the inward flange
85
, it is impossible to form the console box
81
as an integral body molded with a pair of molds that are vertically separated from each other. Instead, to form the console box
81
, the upper section
82
and the lower section
83
must be molded independently. The molded upper and lower sections
82
,
83
are then welded to each other. That is, three independent steps are needed for forming the console box
81
. This complicates the procedure for forming the console box
81
and increases costs.
SUMMARY OF THE INVENTION
Accordingly, to solve the above problems, it is an objective of the present invention to provide an apparatus and a method for molding resin products by which a resin product having a relatively large capacity is formed efficiently and inexpensively.
To achieve the above objective, the present invention provides an apparatus for molding a resin product having a bottom plate, a pair of side plates, and a pair of flanges. The side plates are formed integrally with the bottom plate to extend from opposite sides of the bottom plate, and each flange is formed integrally with the associated side plate to extend inward from an upper end of the side plate. The apparatus includes a pair of inner slidable cores for shaping an upper side of the bottom plate, an inner side of each side plate, and a lower side of each flange. The apparatus also includes an intermediate core provided between the inner slidable cores for restricting a position of each inner slidable core at a predetermined position. The apparatus further includes a sliding mechanism for sliding each inner slidable core to a position spaced from the resin product while moving the inner slidable core and the intermediate core relative to each other in a vertical direction with respect to a molding position.
Other aspects and advantages of the invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
REFERENCES:
patent: 3905740 (1975-09-01), Lovejoy
patent: 5403179 (1995-04-01), Ramsey
patent: 5925303 (1999-07-01), Scheliga
patent: 7-24845 (1995-01-01), None
patent: 7-223244 (1995-08-01), None
patent: 11-77698 (1999-03-01), None
Kidera Tadamasa
Nakao Koji
Suzuki Kazuo
Yokoyama Hidenori
Heitbrink Tim
Pillsbury & Winthrop LLP
Toyoda Gosei Co,., Ltd.
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