Molding method, mold for molding, molded product, and molding machine
A technology of molded products and molding machines, which can be applied to household appliances, other household appliances, applications, etc., and can solve problems such as increased mold costs, increased number of pieces, and complex mold structures.
Inactive Publication Date: 2006-08-30
SUMITOMO HEAVY IND LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
In this way, in order to prevent the molten resin 142 from leaking out from the gap of the parting surface, it is necessary to install special components or use structural components, so the number of components of the mold increases, and the structure of the mold becomes smaller. Complicated, resulting in higher mold costs
Method used
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Embodiment Construction
[0046] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Among them, the method of the present invention is applicable to various devices and applications, but in this embodiment, for the convenience of description, the case where it is applied to an injection molding machine will be described.
[0047] image 3 It is a schematic diagram showing the configuration of the injection molding machine according to the first embodiment of the present invention.
[0048] In the figure, 30 represents an injection device, which has a heating cylinder 31, an injection nozzle 32 disposed at the front end of the heating cylinder 31, a screw 33 disposed inside the heating cylinder 31, and a screw 33 installed on the heating cylinder 31. The upper material supply hopper 34. Here, the screw 33 rotates inside the heating cylinder 31 and advances and retreats (moves in the left-right direction in the figure) by a driving means ...
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Abstract
Before completion of a mold closing step of a mold apparatus, a movable member of one mold is pressed against the other mold, the movable member partially defining a cavity of the mold apparatus; charging a molding material into the cavity of the mold apparatus is started; and after completion of the mold closing step, a mold clamping step of the mold apparatus is performed so as to produce a molded product. The movable member, which partially constitutes a mold, is operated in the mold closing step so as to prevent leakage, through a clearance between parting faces, of a molding material which has begun to be charged into a cavity of the mold before completion of the mold closing step, whereby, even when the mold has a simple structure using no special component members, a molded product having a shape resembling that of a three-dimensional, deep-bottomed, concave container having a thin side wall can be produced in short time.
Description
technical field [0001] The present invention relates to a molding method, a molding die, a molded product, and a molding machine. Background technique [0002] In conventional resin molding machines such as injection molding machines, resin heated and melted in a heating cylinder is injected using high pressure, filled into the cavity of a mold unit, and the resin is cooled and solidified in the cavity, In this way, a molded product is formed. For this reason, the mold device is composed of a fixed mold and a movable mold, and the movable mold is advanced or retreated by the mold clamping device, thereby approaching or leaving the fixed mold, so that the opening and closing of the mold can be realized, that is, the mold can be realized Mold closing, mold clamping, and mold opening (for example, refer to JP-A-6-293043). [0003] Then, in order to make the molded article having a three-dimensional shape and having a shape such as a deep-bottomed concave container whose side ...
Claims
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IPC IPC(8): B29C45/56B29L23/20B29C45/26B29C45/40B29C45/44
CPCB29L2031/712B29K2105/253B29C45/2608B29L2031/7132B29C45/261B29C2045/5615B29C2045/4078B29C45/44B29C45/561B29C45/40B29C45/17B29C45/56
Inventor 泷川直树
Owner SUMITOMO HEAVY IND LTD