EP2292345B1 - Die ejector for deep drawing - Google Patents

Die ejector for deep drawing Download PDF

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Publication number
EP2292345B1
EP2292345B1 EP10382212.8A EP10382212A EP2292345B1 EP 2292345 B1 EP2292345 B1 EP 2292345B1 EP 10382212 A EP10382212 A EP 10382212A EP 2292345 B1 EP2292345 B1 EP 2292345B1
Authority
EP
European Patent Office
Prior art keywords
die
graphical element
deep drawing
ejectors
deep
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10382212.8A
Other languages
German (de)
French (fr)
Other versions
EP2292345A1 (en
Inventor
Enrique Sanchez Casadevall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrias Samart SA
Original Assignee
Industrias Samart SA
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Filing date
Publication date
Application filed by Industrias Samart SA filed Critical Industrias Samart SA
Publication of EP2292345A1 publication Critical patent/EP2292345A1/en
Application granted granted Critical
Publication of EP2292345B1 publication Critical patent/EP2292345B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02—Ejecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies

Definitions

  • the invention relates to a die ejector for deep drawing press according to the preamble of claim 1, providing the function for which they are intended with novelty features and advantages which improve those already known on the market for the same purpose.
  • the object of the invention is focused on die ejectors for deep drawing by means of pressure, especially dies of the type intended, suitably positioned in a compression element, for deep drawing license plates and/or similar elements, which incorporate a series of thickened portions or flanges which substantially improve the effectiveness thereof.
  • both parts of the die must be separated, for which one of them has the so-called ejectors, formed by elements or bodies made of polyurethane which facilitate said operation, preventing both parts of the die from being adhered or hooked to the plate during the application of the pressure.
  • these ejectors are located in the area perimetric to the cavity or flanges, i.e., externally to the graphical element, causing the drawback that, when the press applies pressure thereon, there are marks in the plate around the graphical elements, which are obviously anti-aesthetic.
  • the applicant himself is the proprietor or a utility model with number U200600425, which relates to die ejectors for deep drawing press, in which said ejectors are formed by small independent elements suitable for being incorporated or inserted inside the hollow area created especially for such purpose in the central area of the male part of the die, adapting to the different shapes that said graphical element has in each case, which elements furthermore have at their upper part a flange or lug intended to absorb the pressure exerted by the press.
  • the objective of the present invention is therefore to develop a new type of improved ejectors which solve the drawbacks described above in a practical manner, allowing a much quicker and simpler placement thereof in the die and improving the effectiveness at the time of removing the plate after the deep drawing operation.
  • the ejectors proposed with the present invention are formed from a body made of polyurethane, rubber or any other elastic material which, adopting the configuration of the graphical element to be deep drawn to allow the placement thereof in the hollow of said graphical element in the female part of the die, have on their upper surface a plurality of longitudinal flanges separated from one another, preferably in an equidistant manner, and preferably identical, which are always arranged with the same orientation and in a horizontal position, i.e., parallel with respect to the horizontal axis of the graphical element to be deep drawn.
  • said flanges consist of elevations on the ejector part, all of them arranged in same horizontal direction, they facilitate to a great extent the extraction of the license plate, because since the latter is generally a rectangular landscape plate, more long than wide, it can be extracted in the same direction of the mentioned flanges, the time invested in such operation being advantageously reduced, which logically affects the final cost of the product. Furthermore, even though the plate to be deep drawn presents any other configuration, knowing the horizontal orientation of the mentioned flanges of the ejectors, the operator will speed up the operation of extracting the plates to a great extent.
  • the described improved die ejectors for deep drawing press therefore represent an innovative structure with structural and constitutive features unknown up until now for such purpose, which reasons, added to their practical usefulness, provide them with sufficient grounds for obtaining the exclusivity privilege which is sought.
  • the ejectors in question are formed from a body (1) made of polyurethane, rubber or any other elastic material which, adopting the configuration of the graphical element (2) to be deep drawn, is incorporated in the hollow of said graphical element in the female part (3) of the die, which normally consists of said female part and another male part (4) in which the same graphical element (2) is made inversely in relief.
  • a plurality of longitudinal flanges (5) in the upper surface of said body (1) is contemplated, which flanges are arranged separated from one another, preferably in an equidistant manner, all of them preferably being identical in shape and size and arranged such that all of them have the same orientation, said orientation being horizontal, i.e., parallel with respect to the horizontal axis (2a) of the graphical element (2) to be deep drawn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Description

    Object of the Invention
  • The invention relates to a die ejector for deep drawing press according to the preamble of claim 1, providing the function for which they are intended with novelty features and advantages which improve those already known on the market for the same purpose.
  • More particularly, the object of the invention is focused on die ejectors for deep drawing by means of pressure, especially dies of the type intended, suitably positioned in a compression element, for deep drawing license plates and/or similar elements, which incorporate a series of thickened portions or flanges which substantially improve the effectiveness thereof.
    • Background of the Invention
  • As is known, once the license plate or similar element to be made has been deep drawn, both parts of the die must be separated, for which one of them has the so-called ejectors, formed by elements or bodies made of polyurethane which facilitate said operation, preventing both parts of the die from being adhered or hooked to the plate during the application of the pressure.
  • In conventional dies, these ejectors are located in the area perimetric to the cavity or flanges, i.e., externally to the graphical element, causing the drawback that, when the press applies pressure thereon, there are marks in the plate around the graphical elements, which are obviously anti-aesthetic.
  • To solve said problems, the applicant himself is the proprietor or a utility model with number U200600425, which relates to die ejectors for deep drawing press, in which said ejectors are formed by small independent elements suitable for being incorporated or inserted inside the hollow area created especially for such purpose in the central area of the male part of the die, adapting to the different shapes that said graphical element has in each case, which elements furthermore have at their upper part a flange or lug intended to absorb the pressure exerted by the press.
  • Although said solution improves the effectiveness of conventional ejectors, it still has certain aspects which can be improved, especially those relating to the complexity and laboriousness required to place such ejectors, since they are individual elements which are positioned according to the shape of each graphical element, and in addition, upon being arranged in different orientations, according to the form of said graphical element, they do not always allow lifting the plate with the same ease.
  • Concerning the state of the art, the existence of the following documents must further be discussed as being the most relevant in relation to the object of the present invention:
    • Patent FR2191952A1 (HALFON PIERRE [FR]) 8 February 1974 (08-02-1974), relating to a process for manufacturing deep drawn plates used for signs, which discloses the use of ejectors to facilitate the uncoupling of the plate, said ejectors being formed by a part made of an elastic material consisting of a body adopting the configuration of the graphical element to be deep drawn.
    • Patent FR2541914A1 (ESSARAUTO 2000 [FR]) 7 September 1984 (07-09-1984), relating to a tool for embossing numbers and letters on plates, especially for making license plates, in which like the previous case, the ejectors consist of a body made of an elastic material adopting the configuration of the graphical element to be deep drawn.
    • Patent FR2636867A1 (BORNAREL GUY [FR]) 30 March 1990 (30-03-1990) relates to a deep drawing and cutting tool with elastic ejectors. In this case, the ejectors also consist of a body made of an elastic material adopting the configuration of the graphical element to be deep drawn which is placed in the female part of the die, having in this case a perimetric flange therein. Other ejectors are further contemplated in the male part which are formed by respective strips with several flanges, but which are placed in the male part outside the graphical element. They are specifically fixed in respective grooves provided for such purpose above and below said graphical element.
  • The objective of the present invention is therefore to develop a new type of improved ejectors which solve the drawbacks described above in a practical manner, allowing a much quicker and simpler placement thereof in the die and improving the effectiveness at the time of removing the plate after the deep drawing operation.
    • Description of the Invention
  • This objective is achieved by a die ejector for deep drawing press according to the present invention as defined in claim 1.
  • Specifically, the ejectors proposed with the present invention are formed from a body made of polyurethane, rubber or any other elastic material which, adopting the configuration of the graphical element to be deep drawn to allow the placement thereof in the hollow of said graphical element in the female part of the die, have on their upper surface a plurality of longitudinal flanges separated from one another, preferably in an equidistant manner, and preferably identical, which are always arranged with the same orientation and in a horizontal position, i.e., parallel with respect to the horizontal axis of the graphical element to be deep drawn.
  • Thus, since said flanges consist of elevations on the ejector part, all of them arranged in same horizontal direction, they facilitate to a great extent the extraction of the license plate, because since the latter is generally a rectangular landscape plate, more long than wide, it can be extracted in the same direction of the mentioned flanges, the time invested in such operation being advantageously reduced, which logically affects the final cost of the product. Furthermore, even though the plate to be deep drawn presents any other configuration, knowing the horizontal orientation of the mentioned flanges of the ejectors, the operator will speed up the operation of extracting the plates to a great extent.
  • The described improved die ejectors for deep drawing press therefore represent an innovative structure with structural and constitutive features unknown up until now for such purpose, which reasons, added to their practical usefulness, provide them with sufficient grounds for obtaining the exclusivity privilege which is sought.
    • Description of the Drawings
  • To complement the description which is being made and for the purpose of aiding to better understand the features of the invention, a set of drawings is attached to the present specification as an integral part thereof, in which the following has been depicted with an illustrative character:
    • Figure 1 shows a plan view of the two parts, male and female, of a deep drawing die, in which female part there has been incorporated an ejector of the type forming the object of the present invention, the configuration and elements that it has being observed.
    Preferred Embodiment of the Invention
  • In view of the sole Figure 1 described, and according to the numbers adopted therein, a preferred embodiment of the invention can be observed.
  • Thus, as observed in said Figure 1, the ejectors in question are formed from a body (1) made of polyurethane, rubber or any other elastic material which, adopting the configuration of the graphical element (2) to be deep drawn, is incorporated in the hollow of said graphical element in the female part (3) of the die, which normally consists of said female part and another male part (4) in which the same graphical element (2) is made inversely in relief.
  • The incorporation of a plurality of longitudinal flanges (5) in the upper surface of said body (1) is contemplated, which flanges are arranged separated from one another, preferably in an equidistant manner, all of them preferably being identical in shape and size and arranged such that all of them have the same orientation, said orientation being horizontal, i.e., parallel with respect to the horizontal axis (2a) of the graphical element (2) to be deep drawn.

Claims (3)

  1. Die ejector for deep drawing press, of the type intended to facilitate the uncoupling of the plate to be deep drawn and of the female part (3) and male part (4) forming the die, formed by parts made of polyurethane, rubber or another elastic material which, being of the type formed from a body (1) adopting the configuration of the graphical element (2) to be deep drawn and suitable to be incorporated in the hollow of said graphical element provided in the female part (3) of the die, characterized in that the upper surface of said body (1) incorporates a plurality of longitudinal flanges (5), consisting of elevations on said upper surface of said body (1), which are arranged separated from one another such that all of them have the same orientation, said orientation being horizontal, i.e., parallel with respect to the horizontal axis (2a) of the graphical element (2) to be deep drawn.
  2. The improved die ejector for deep drawing press according to claim 1, characterized in that the longitudinal flanges (5) of the body (1) are arranged equidistantly from one another.
  3. The improved die ejector for deep drawing press according to claim 1, characterized in that the longitudinal flanges (5) of the body (1) are all identical in shape and size.
EP10382212.8A 2009-08-05 2010-07-30 Die ejector for deep drawing Active EP2292345B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200930352U ES1070816Y (en) 2009-08-05 2009-08-05 MATRIX EXPULSORS FOR PERFECTED PRESSURE EMBUTITIONS

Publications (2)

Publication Number Publication Date
EP2292345A1 EP2292345A1 (en) 2011-03-09
EP2292345B1 true EP2292345B1 (en) 2015-09-09

Family

ID=41202373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10382212.8A Active EP2292345B1 (en) 2009-08-05 2010-07-30 Die ejector for deep drawing

Country Status (2)

Country Link
EP (1) EP2292345B1 (en)
ES (2) ES1070816Y (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191952B1 (en) * 1972-07-12 1975-06-13 Halfon Pierre
FR2541914B1 (en) * 1983-03-02 1985-12-20 Essarauto 2000 TOOLS FOR STAMPING NUMBERS AND LETTERS ON PLATES, PARTICULARLY FOR THE MANUFACTURE OF LICENSE PLATES
US4741197A (en) * 1986-04-25 1988-05-03 Aluminum Company Of America Ejection of superplastically formed part with minimum distortion
FR2636867B3 (en) * 1988-09-27 1990-12-07 Bornarel Guy TOOL FOR STAMPING AND CUTTING WITH ELASTIC EJECTORS

Also Published As

Publication number Publication date
EP2292345A1 (en) 2011-03-09
ES1070816U (en) 2009-10-30
ES1070816Y (en) 2010-01-28
ES2554656T3 (en) 2015-12-22

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