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Press system

a technology of press system and press plate, which is applied in the direction of forging/pressing/hammering apparatus, forging/hammering/pressing machines, and shaping tools, etc., can solve the problems of product panel bursting or being torn at a portion, reducing the marketability of molded product panels, and increasing the cost. achieve the effect of preventing a product panel from bursting or being torn

Inactive Publication Date: 2012-06-07
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a press system that prevents molded products from bursting or tearing due to differences in molding depth caused by protrusion shapes. The system includes a lower die punch, a blank holder, an upper die, and a sub blank holder unit. The sub blank holder unit compensates for differences in molding depth by holding a portion of the material panel in a protrusion shape with the upper die. The sub blank holder unit includes a mount plate, a sub blank holder, and at least one elastic member. The elastic member may be a gas-cylinder-type spring. The invention prevents product panels from bursting or tearing during press molding.

Problems solved by technology

However, the general press system has a problem in which the product panel bursts or is torn at a portion molded in a protrusion shape due to a difference in molding depth in a case of molding a material panel integrally with a protrusion shape such as a spoiler applied to a tail gate of a hatchback style vehicle or an RV vehicle.
Therefore, the general press system involves problems in which when a material panel is molded, the depth of the protrusion shape is restricted to reduce moldability, a separate additional structure should be mounted to implement the protrusion shape to increase the cost, and the marketability of the molded product panel is reduced.

Method used

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Embodiment Construction

[0035]An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.

[0036]Exemplary embodiments described in the present specification and a configuration shown in the drawings are just an exemplary embodiment of the present invention, but are not limited to the spirit and scope of the present invention. Therefore, it should be understood that there may be various equivalents and modifications capable of replacing them at the time of filing of the present application.

[0037]Also, it is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and othe...

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Abstract

Disclosed is a press system having advantages of preventing a molded product panel from bursting or being torn due to a difference in molding depth caused by a protrusion shape to improve the moldability and marketability of the product panel when press molding is performed on a material panel. An illustrative press system comprises: a lower die punch provided on a bolster and having a lower surface shape of a product panel; a blank holder provided on the outside of the lower die punch and mounted on the bolster through cushion pins; an upper die having an upper surface shape of the product panel, mounted on the slider, and pressing a material panel together with the lower die punch to mold the product panel; and a sub blank holder unit provided inside the lower die punch by performing the molding while holding a portion of the material panel to be molded into a protrusion shape together with the upper die such that a difference in molding depth is compensated when molding is performed.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to and the benefit of Korean Patent Application No. 10-2010-0123462 filed in the Korean Intellectual Property Office on Dec. 6, 2010, the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002](a) Field of the Invention[0003]The present invention relates to a press system, and more particularly, to a press system preventing a molded product panel from bursting or being torn due to a difference in molding depth caused by a protrusion shape when a material panel is molded.[0004](b) Description of the Related Art[0005]In general, a vehicle maker produces a vehicle by assembling about 20000 to 30000 components through several assembly processes.[0006]Particularly, product panels are produced through various kinds of press systems in the first stage of a vehicle manufacturing process, and is transferred to a vehicle body factory where each portion of the product panels is ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B21D22/06B21D37/10
CPCB21D24/04B21D22/06
Inventor PARK, JOO SUK
Owner HYUNDAI MOTOR CO LTD
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