KR101234741B1 - hot blow forming apparatus, mold for hot blow forming and hot blow forming method - Google Patents
hot blow forming apparatus, mold for hot blow forming and hot blow forming method Download PDFInfo
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- KR101234741B1 KR101234741B1 KR1020100097134A KR20100097134A KR101234741B1 KR 101234741 B1 KR101234741 B1 KR 101234741B1 KR 1020100097134 A KR1020100097134 A KR 1020100097134A KR 20100097134 A KR20100097134 A KR 20100097134A KR 101234741 B1 KR101234741 B1 KR 101234741B1
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- mold part
- mold
- inner groove
- molding
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A warm gas forming apparatus and a warm gas forming method are provided. According to a warm gas forming apparatus according to an embodiment of the present invention, a first mold part including an inner groove corresponding to a shape of a molding and a material inlet around the inner groove is provided. The second mold part is coupled to the first mold part with the molding material interposed therebetween. The gas supply part supplies gas to the groove through the second mold part to pressurize the shaped material.
Description
The present invention relates to a molding apparatus using a mold, and more particularly to a warm gas molding apparatus and a molding method using the same.
Press molding of metal sheets is a plastic processing method that is widely used for manufacturing parts such as automobile parts, machines, electronic devices, etc., because of their high productivity and high precision processing. According to the recent trend of lighter weight of the material, aluminum, magnesium, and the like, which are in the spotlight, have difficulty in forming. In order to improve the moldability of such a hardly forming plate, a warm gas forming method is used in which a plate is heated and then molded into a high-pressure gas.
However, even when the degree of molding is somewhat large even under the conventional warm gas molding method, the difficulty of molding is difficult because the stretching of the refractory forming plate is limited. In particular, when forming a tailor rolled blank (TRB) material whose thickness is not constant, it is more difficult to form the gas pressure due to the outflow of gas due to the plate thickness difference. Accordingly, one object of the present invention is to provide a warm gas forming apparatus and a warm gas forming method using the same, which can improve the formability of not only steel sheet but also TRB sheet and the refractory forming material. These tasks are presented by way of example, and the scope of the present invention is not limited by these tasks.
The warm gas forming apparatus of one embodiment of the present invention is provided. A first mold portion is provided that includes an inner groove corresponding to the shape of the molding and a material inlet around the inner groove. The second mold part is coupled to the first mold part with the molding material interposed therebetween. The gas supply part supplies gas to the groove through the second mold part to pressurize the shaped material.
In one example of the apparatus, the material inlet may include an inclined surface for separating the molding material onto the material inlet. Further, the inclined surface of the material inlet may be formed to be inclined inward so that the separation distance between the molded material and the inclined surface increases toward the inner groove direction.
In another example of the apparatus, a sealing unit may be further provided disposed between the first mold portion and the second mold portion outside the material inlet portion to seal the gas supplied from the gas supply portion.
In another example of the apparatus, the sealing unit comprises: a protrusion on any one of the first mold portion and the second mold portion; And a recess formed on the other one of the first mold part and the second mold part and coupled with the protrusion to have a margin between the protrusion to allow additional plastic flow of the molding.
The metal mold | die for warm gas molding which concerns on one form of this invention is provided. A first mold portion is provided comprising an inner groove corresponding to the shape of the molding and a material inlet with an inclined surface around the inner groove. The second mold part is coupled to the first mold part with the molding material interposed therebetween, and includes a gas inlet through which gas for pressurizing the molding material is supplied.
A warm gas forming method of one embodiment of the present invention is provided. Preheat the workpiece. The shaped material is mounted in a mold including an inner groove corresponding to a shape of a molding to be formed from the molded material and a material inlet around the inner groove. The molded object is pressurized into the inner groove while supplying gas to the inner groove of the mold to allow stretching of the molded material from the material inlet into the inner groove.
According to the warm gas forming apparatus or the warm gas forming method according to the embodiments of the present invention, by placing the material inlet around the inner groove to allow the molded material to be further stretched from around the inner groove into the inner groove, Only in the inner groove can prevent excessive stretching.
In addition, according to the warm gas forming apparatus or the warm gas forming method according to the embodiments of the present invention, by arranging the margin in the sealing unit, the relationship between the shape or the thickness distribution of the molding material when the first mold portion and the second mold portion are combined Material flow can be used to prevent gas leakage.
Accordingly, by using the warm gas forming apparatus or the warm gas forming method according to the embodiments of the present invention, it is possible to stably mold the formed material including not only steel but also the refractory lightweight material, such as aluminum or magnesium. In addition, the moldability can also be improved for the TRB sheet.
1 is a schematic perspective view showing a warm gas forming apparatus according to an embodiment of the present invention;
2 is a cross-sectional view of the warm gas forming apparatus of FIG. 1;
3 is a cross-sectional view showing a warm gas forming apparatus according to another embodiment of the present invention;
4 is a schematic flowchart showing a warm gas forming method according to an embodiment of the present invention;
5 and 6 are cross-sectional views showing a warm gas forming method according to an embodiment of the present invention; And
7 is a view schematically showing a sealing shape according to the plate thickness when forming the TRB sheet.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. In the drawings, the components may be exaggerated or reduced in size for convenience of description.
In embodiments of the present invention, the warm gas forming or warm gas forming apparatus may be referred to as a hot gas forming or hot gas forming apparatus. In addition, in embodiments of the present invention, the warm gas forming apparatus may substantially mean a mold or may mean a molding apparatus in a broader sense including such a mold.
1 is a schematic perspective view showing a warm gas forming apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the warm gas forming apparatus of FIG. 1.
1 and 2, the
The
In addition, the
For example, the
The
In this embodiment, the
The
The
The
The protrusion 128 and the recess 118 may be disposed to face each other near edges of the
The recessed portion 118 may be formed to spread more widely than the protrusion 128 so as to define a margin (see 119 of FIG. 5) therebetween when engaged with the protrusion 128. That is, the protrusions 128 and the recesses 118 may not be coupled to fit together, but may be coupled so that the
Optionally, the
In this embodiment, the coupling structure of the
According to the above-described warm gas forming apparatus, by injecting a high-
Accordingly, by using the above-described warm gas forming apparatus, it is possible to stably mold the molded
Such a TRB sheet may be thickened at a portion where structural rigidity is required, and relatively thin at a portion where structural rigidity is relatively less required. Accordingly, the TRB sheet material can be used for parts that require safety (structural rigidity) and weight reduction, such as automotive center pillars.
3 is a cross-sectional view showing a warm gas forming apparatus according to another embodiment of the present invention. The warm gas forming apparatus according to this embodiment is a modification of some of the configuration in the warm gas forming apparatus of FIG. 2, and thus duplicated description is omitted in the two embodiments.
Referring to FIG. 3, the
Accordingly, during molding of the molded
4 is a schematic flowchart showing a warm gas forming method according to an embodiment of the present invention. 5 and 6 are cross-sectional views showing a warm gas forming method according to an embodiment of the present invention.
4 and 5, first, the molding
In this coupling step, the
In particular, when the molded
As shown in FIG. 7, it can be seen that the 2 mm plate (a) and the 1 mm plate (b) are equally compressed to have a thickness of 1 mm to be combined with the sealing unit 130. In this case, it can be seen that the amount of plastic flow that is pushed into the receiving
4 and 6, the
In this forming step, the molding
The molded article formed in the above manner may be used as a TRB part having a constant thickness as well as a part having a constant thickness. For example, the TRB part may comprise a vehicle center pillar.
The foregoing description of specific embodiments of the invention has been presented for purposes of illustration and description. Therefore, the present invention is not limited to the above embodiments, and various modifications and changes can be made by those skilled in the art within the technical spirit of the present invention in combination with the above embodiments. Do.
50: molding material 60: gas
110: first mold 112: inner groove
114: material inlet 116: slope
117: clearance angle 118; Concave portion
120: second mold 124: gas supply unit
126: gas inlet 128: protrusion
130: sealing unit
Claims (12)
A second mold part coupled to the first mold part with a molding material therebetween; And
A gas supply part supplying gas to the groove through the second mold part to pressurize the molding material,
The material inlet is provided to space the molded material onto the material inlet, and includes an inclined surface that allows the molded material to be additionally drawn into the inner groove when molding the molded material.
A sealing unit disposed between the first mold part and the second mold part outside the material inlet part to seal the gas supplied from the gas supply part,
The sealing unit
A protrusion on any one of the first mold part and the second mold part; And
A recess formed on the other of the first mold portion and the second mold portion, the recess being coupled with the protrusion to allow further plastic flow of the molding,
Wherein the recess has a gentler slope than the protrusion in the lateral direction so as to have a margin between the protrusion and the protrusion,
Warm gas forming device.
Mounting the molded object in a mold including an inner groove corresponding to a shape of a molding to be formed from the molded material and a material inlet around the inner groove; And
Supplying a gas to the inner groove of the mold to press and shape the molded material into the inner groove while allowing the stretching of the shaped material from the material inlet into the inner groove,
The material inlet is provided to space the molded material onto the material inlet, and includes an inclined surface that allows the molded material to be additionally drawn into the inner groove in the forming step.
Sealing the first mold part and the second mold part through a sealing unit outside the material inlet part in the mounting step,
The sealing unit
A protrusion on any one of the first mold part and the second mold part; And
A recess formed on the other of the first mold portion and the second mold portion, the recess being coupled with the protrusion to allow further plastic flow of the molding,
Wherein the recess has a gentler slope than the protrusion in the lateral direction so as to have a margin between the protrusion and the protrusion,
Warm gas forming method.
Priority Applications (1)
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KR1020100097134A KR101234741B1 (en) | 2010-10-06 | 2010-10-06 | hot blow forming apparatus, mold for hot blow forming and hot blow forming method |
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KR1020100097134A KR101234741B1 (en) | 2010-10-06 | 2010-10-06 | hot blow forming apparatus, mold for hot blow forming and hot blow forming method |
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KR20120035550A KR20120035550A (en) | 2012-04-16 |
KR101234741B1 true KR101234741B1 (en) | 2013-02-19 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119421A1 (en) * | 2014-02-07 | 2015-08-13 | 강대건 | Method and apparatus for sheet hydroforming |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102329202B1 (en) * | 2015-08-25 | 2021-11-22 | 주식회사 성우하이텍 | Forming method of shock absorber housing for vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100231075B1 (en) * | 1991-07-23 | 1999-12-01 | 로렌스 제이. 로어즈 | Method of die forming metallic sheet materials |
JP2001129618A (en) * | 1999-10-28 | 2001-05-15 | Honda Motor Co Ltd | Superplastic forming die and method for superplastic forming |
KR20020083222A (en) * | 2001-04-26 | 2002-11-02 | 현대자동차주식회사 | Hydro-forming system and method thereof |
JP2010046673A (en) * | 2008-08-19 | 2010-03-04 | Sumitomo Light Metal Ind Ltd | Method for manufacturing integrally-formed hollow article by hot blow-forming, mold and to-be-formed material used in the same method for manufacturing integrally-formed hollow article by hot blow-forming |
-
2010
- 2010-10-06 KR KR1020100097134A patent/KR101234741B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100231075B1 (en) * | 1991-07-23 | 1999-12-01 | 로렌스 제이. 로어즈 | Method of die forming metallic sheet materials |
JP2001129618A (en) * | 1999-10-28 | 2001-05-15 | Honda Motor Co Ltd | Superplastic forming die and method for superplastic forming |
KR20020083222A (en) * | 2001-04-26 | 2002-11-02 | 현대자동차주식회사 | Hydro-forming system and method thereof |
JP2010046673A (en) * | 2008-08-19 | 2010-03-04 | Sumitomo Light Metal Ind Ltd | Method for manufacturing integrally-formed hollow article by hot blow-forming, mold and to-be-formed material used in the same method for manufacturing integrally-formed hollow article by hot blow-forming |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119421A1 (en) * | 2014-02-07 | 2015-08-13 | 강대건 | Method and apparatus for sheet hydroforming |
KR20150093407A (en) * | 2014-02-07 | 2015-08-18 | 강대건 | Method and Apparatus for Sheet Hydroforming |
KR102174318B1 (en) * | 2014-02-07 | 2020-11-04 | 강대건 | Method and Apparatus for Sheet Hydroforming |
Also Published As
Publication number | Publication date |
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KR20120035550A (en) | 2012-04-16 |
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