KR20140118295A - Hot stamping forming apparatus - Google Patents

Abstract

The present invention is to provide a hot stamping forming apparatus including: a lower mold where a material is mounted; an upper mold arranged on an upper part of a mounting part; and a heating part installed in at least either the lower mold and the upper mold, and heating the material by providing ultrasonic waves to the mounted material.

Description

[0001] HOT STAMPING FORMING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot stamping molding apparatus, and more particularly, to a hot stamping molding apparatus capable of improving moldability on a surface of a work.

Generally, the hot stamping molding method is advantageous in that it can easily form a steel sheet material at a high temperature, which is excellent in moldability, and is mainly used for a structural part (for example, a bumper beam, a door beam, Filler, etc.).

Since the forming region of the steel sheet material may be a partial region, it is important to heat only the region required for forming.

A prior art related to the present invention is Korean Registered Patent No. 10-11308610000 (registered on March 20, 2012), which discloses a technique for a hot stamping molding apparatus having a heating furnace for heating a blank .

SUMMARY OF THE INVENTION An object of the present invention is to provide a hot stamping molding apparatus capable of reducing the coefficient of friction and improving moldability during material heating processing.

In a preferred aspect of the present invention, the present invention provides a mold comprising: a lower mold on which a material is seated; An upper mold disposed at an upper portion of the seating portion; And a heating unit installed in at least one of the lower mold and the upper mold to heat the material by providing ultrasonic waves to the material placed on the lower mold.

It is preferable that the heating unit is disposed at positions facing each other at a plurality of positions of the lower mold and the upper mold.

The heating unit may include a first ultrasonic wave generating source disposed at a plurality of positions of the lower mold and generating a first ultrasonic wave by the material, a second ultrasonic wave generating unit disposed at a position facing the first ultrasonic wave generating source at a plurality of positions of the upper mold, And a second ultrasonic wave generating source for generating a second ultrasonic wave as a material.

The lower mold includes a seat portion on which the workpiece is seated, and one or a plurality of molding blocks disposed on a side portion of the seat portion and elevated and lowered to mold the workpiece.

The first ultrasonic heating source is preferably installed in the molding block.

The lower mold and the upper mold preferably form a gap from the surface of the work.

The hot stamping molding apparatus further includes a heating control unit.

The heating control unit includes a thickness measuring unit for measuring a thickness value of the workpiece, a temperature measuring unit for measuring a temperature value of the workpiece to be heated, an operation unit for operating the heating unit so as to achieve predetermined ultrasonic intensity according to the measured thickness value, And a control unit for controlling the operation of the heating unit so that the measured temperature value is within a predetermined reference temperature range.

Further, the hot stamping molding apparatus preferably includes a mobile unit.

The moving unit includes a first moving unit installed on the lower mold for moving the first ultrasonic wave generating source, a second moving unit installed on the upper mold for moving the second ultrasonic wave generating source, And a control unit for controlling the driving of the first moving unit and the second moving unit so as to be positioned in the set heating object area to control the positions of the first ultrasonic generating source and the second ultrasonic generating source And a control unit.

The present invention has an effect of preventing the generation of an oxide film on the surface of a material during a heating process by providing an ultrasonic wave to the material to heat the material and effectively reducing the coefficient of friction and improving the moldability during molding .

In addition, the present invention has an effect of efficiently heat-treating a material having various thicknesses by variably controlling the supply intensity of ultrasonic waves according to the thickness of the material.

1 is a view showing a hot stamping forming apparatus according to the present invention.
FIG. 2 is a view showing a gap between the upper mold and the lower mold according to the present invention. FIG.
Fig. 3 is a view showing an example in which the heating control unit according to the present invention is installed.
4 is a flow chart showing the operation of the heating control unit according to the invention.
5 is a view showing an example in which a mobile unit according to the present invention is installed.

Hereinafter, a hot stamping forming apparatus according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a view showing a hot stamping forming apparatus according to the present invention, and FIG. 2 is a view showing a gap between a material and an upper mold according to the present invention.

Referring to FIG. 1, the hot stamping forming apparatus of the present invention comprises a lower mold 100, an upper mold 200, and a heating unit 300.

The lower mold 100 includes a seating part 110 and a molding block 120.

A steel sheet material 10 molded as a part of a vehicle is seated on the upper end of the seating part 110.

The molding block 120 is positioned on both sides of the seating part 110.

The molding block 120 includes a molding member 121 for press-molding the material 10 and a lifting member 122 for lifting the molding member 121 by receiving power from the outside.

The elevating member 122 may be an elevating cylinder, and the elevating cylinder may be hydraulic or pneumatic.

An upper mold 200 is disposed on the upper portion of the lower mold 100 so as to face each other.

The heating unit 300 according to the present invention is installed in at least one of the upper mold 200 and the lower mold 100.

In the present invention, the heating unit 300 is installed in the upper mold 200 and the lower mold 100, respectively.

The configuration of the heating unit 300 according to the present invention will be described.

The heating unit 300 includes a first ultrasonic wave generator 310 and a second ultrasonic wave generator 320.

The first ultrasonic generator 310 is installed in the molding block 120 included in the lower mold 100.

The first ultrasonic generator 310 is installed to be exposed to the upper part of the molding member 121 of the molding block 120.

The first ultrasonic wave generator 310 provides a first ultrasonic wave from the lower part of the workpiece 10 toward the workpiece.

The second ultrasonic wave generator 320 is installed at the lower end of the upper mold 200.

The second ultrasonic wave generator 320 is disposed at a position opposite to the first ultrasonic wave generator 310 at the lower end of the upper mold 200.

The second ultrasonic wave generator 320 provides a second ultrasonic wave from the upper part of the workpiece 10 toward the workpiece 10.

Therefore, the medium portion exposed to the first and second ultrasonic waves, that is, the corresponding portion of the workpiece 10, can be heated to a certain temperature.

Here, as shown in FIG. 2, a material is disposed between the first and second ultrasound generating sources 310 and 320.

The upper and lower surfaces of the workpiece 10 form a predetermined gap G1 and G2 with the first and second ultrasonic wave generators 310 and 320, respectively. That is, the material 10 is disposed in a non-contact manner with the heating unit 300.

The operation of the hot stamping forming apparatus of the present invention will be described with the above-described structure.

Referring to FIG. 1, a steel sheet material 10 for automobile parts processing is seated on a lower mold 100.

Preferably, the workpiece 10 is seated in the seating portion 110 and the pair of molding blocks 120 are lowered on both sides of the seating portion 110 and are waiting.

Then, the upper mold 200 is positioned on the upper side of the workpiece 10.

Here, the second ultrasonic wave generator 320 installed at the lower end of the upper mold 200 and the upper surface of the workpiece 10 form a first gap G1.

Next, each of the molding blocks 120 is caused to flow upward by the driving of the elevating member 122.

A first gap G2 formed between the first ultrasonic generator 310 and the lower surface of the workpiece 10 is formed on the upper end of each of the molding members 121, It is preferable that the molded member 121 is lifted so as to form the first gap G1.

Therefore, the upper mold 200 and the molding block 120 including the first and second ultrasonic wave generators 310 and 320 form a predetermined gap G1 and G2 with the workpiece 10 to make no contact.

In this state, each of the first and second ultrasonic wave generators 310 and 320 generates and transmits the first and second ultrasonic waves in the heating region of the material 10.

Therefore, the material 10 can be heated to a predetermined temperature due to the first and second ultrasonic waves.

The heating temperature may be proportional to the first and second ultrasonic generation times under the heat treatment conditions.

Next, when the heating process is completed as described above, the molding block 120 can be raised to perform molding for the heated portion.

Through the above-described structure and operation, the embodiment according to the present invention can prevent generation of an oxide film on the surface of a workpiece during heat treatment by providing the workpiece with ultrasonic waves in a non-contact manner by providing ultrasonic waves to the workpiece, It is possible to efficiently reduce the moldability during molding.

Fig. 3 is a view showing an example in which a heating control unit according to the present invention is installed, and Fig. 4 is a flowchart showing driving of a heating control unit according to the present invention.

Referring to Figs. 3 and 4, the hot stamping forming apparatus of the present invention may further include a heating control unit 400. Fig.

The heating control unit 400 mainly includes a thickness measuring unit 410, a temperature measuring unit 420, and a controller 430.

The thickness measuring unit 410 may measure the thickness of the workpiece 10 mounted on the seating part 110. The thickness measuring part 410 may be installed on the upper mold 200 or the lower mold 100. [

For example, an image of a frame is acquired from the side of the material 10, and the boundaries of the upper and lower surfaces of the material 10 are calculated through image processing in the acquired image.

Next, the thickness value of the workpiece 10 is calculated through the boundary between the top and bottom surfaces of the calculated workpiece 10, and the calculated thickness value is transmitted to the controller 430.

The temperature measuring unit 420 may be a noncontact type temperature sensor and is installed in the upper mold 200 or the lower mold 100. The temperature measuring unit 420 measures a temperature value of a heating area of the heated material 10, Lt; / RTI >

The controller 430 receives the thickness value of the workpiece 10 measured by the thickness measuring unit 410.

The controller 430 sets the intensity of the first and second ultrasonic waves corresponding to the thickness values of the received material 10.

The controller 430 controls the operation of the first and second ultrasound generating sources 310 and 320 so as to achieve the intensity of the first and second ultrasound waves.

Therefore, the heating region of the workpiece 10 is heated due to the generation of the first and second ultrasonic waves.

Next, the temperature measuring unit 420 measures the temperature value in the heating region of the workpiece 10 in real time and transmits the measured temperature value to the controller 430.

The controller 430 may control the operation of the first and second ultrasound generating sources 310 and 320 to vary the intensity of the first and second ultrasound waves so that the measured temperature value is included in a preset reference temperature range.

The embodiment according to the present invention can efficiently heat-treat a material having various thicknesses by variably controlling the supply intensity of ultrasonic waves according to the thickness of the material.

5 is a view showing an example in which a mobile unit according to the present invention is installed.

5, the present invention may further have a mobile unit 500. [

The mobile unit 500 includes first and second moving units 510 and 520, a setting unit 530, and a movement control unit 540.

The first moving part 510 is installed on the lower mold, and moves the first ultrasonic generator 310.

The first moving part 510 includes a first XY driving part 511 installed at the upper end of the forming block 120.

The first XY driver 511 is provided with a first ultrasonic generator 310. The first XY driver 511 moves the first ultrasonic generator 310 to a set position.

The second moving unit 520 is installed on the upper mold 200 to move the second ultrasonic wave generator 320.

The second moving part 520 includes a second XY driving part 512 installed at the lower end of the upper mold 200.

The second XY driver 512 is provided with a second ultrasonic wave generator 320. The second XY driver 512 moves the second ultrasonic generator 320 to a set position.

Here, the first and second moving parts 510 and 520 may be drawn out from the lower mold 100 or the upper mold 200 through a separate drawing device (not shown). The drawing device may be a cylinder operated by pneumatic or hydraulic pressure.

Then, the setting unit 530 can set a heating target area of the work 10.

The movement control unit 540 controls driving of the first moving unit 510 and the second moving unit 520 so as to be positioned in the set heating target area so that the first ultrasonic wave generator 310 and the second ultrasonic wave generator The position of the ultrasonic wave generator 320 can be controlled.

Referring to the above configuration, the workpiece 10 is seated on the seating portion 110.

And sets the heating area in the workpiece 10 through the setting unit 530. [ The heating region may be set as coordinate information.

Then, the setting unit 530 transmits coordinate information on the set heating region to the movement control unit 540. [

The movement controller 540 controls the drawing device to move the first moving part 510 to the upper end of the lower mold 100 and move the second moving part 520 to the lower end of the upper mold 200, .

The movement controller 540 moves the first and second ultrasound generating sources 310 and 320 through the first and second XY driving units 511 and 512 so as to be positioned in the heating region of the workpiece 10.

The movement controller 540 generates first and second ultrasound waves in the heating region of the workpiece 10 using the first and second ultrasound generating sources 310 and 320.

As a result, the heating region of the material 10 is heated to a certain temperature.

The control of the heating temperature after heating can be adopted and used in the embodiment described with reference to Figs. 3 to 4 described above.

Then, after heating, the first and second moving parts 510 and 520 may be drawn out to the outside through the drawing device to achieve a standby state.

The embodiment according to the present invention has an advantage that when the heating region of the work, that is, the region to be shaped is variable, the position of the heating portion can be moved to this position and the heating processing can be performed.

Although specific embodiments of the hot stamping forming apparatus of the present invention have been described above, it is apparent that various modifications can be made without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: lower mold 110: seat part
120: molding block 121: molded member
122: lifting member 200: upper mold
300: heating unit 310: first ultrasonic wave source
320: second ultrasonic wave generator 400: heating control unit
410: thickness measuring section 420: temperature measuring section
430: control unit 500: mobile device
510: first moving part 511: first XY driving part
520: second shifting unit 521: second XY driving unit
530: Setting unit 540:

Claims (7)

A lower mold on which the material is seated;
An upper mold disposed at an upper portion of the seating portion; And
And a heating unit installed in at least one of the lower mold and the upper mold and heating the material by providing ultrasonic waves to the material placed on the lower mold.
The method according to claim 1,
The heating unit includes:
At a plurality of positions of the lower mold and the upper mold,
Wherein the plurality of hot stamping molding devices are disposed at positions facing each other.
3. The method of claim 2,
The heating unit includes:
A first ultrasonic generator disposed at a plurality of positions of the lower mold and generating a first ultrasonic wave from the material;
And a second ultrasonic wave generating source disposed at a plurality of positions of the upper mold facing the first ultrasonic wave generating source and generating a second ultrasonic wave by the material.
The method of claim 3,
The lower mold,
A seating part on which the material is seated,
And one or a plurality of molding blocks which are disposed on the side of the seat portion and are lifted and lowered to mold the workpiece,
Wherein the first ultrasonic heating source is installed in the molding block.
The method of claim 3,
Wherein the lower mold and the upper mold form a gap from the surface of the work.
The method according to claim 1,
In the hot stamping forming apparatus,
Further comprising a heating control unit,
The heating control unit includes:
A thickness measuring unit for measuring a thickness value of the material;
A temperature measuring unit for measuring a temperature value of the material to be heated,
And controlling the operation of the heating unit so that the operation of the heating unit is controlled so as to achieve predetermined ultrasonic intensity according to the measured thickness value and the measured temperature value is included in a preset reference temperature range. Stamping forming device.
The method of claim 3,
The hot stamping molding apparatus includes a mobile unit,
The mobile unit includes:
A first moving unit installed on the lower mold for moving the first ultrasonic wave generating source,
A second moving unit installed on the upper mold for moving the second ultrasonic wave generating source,
A setting unit for setting a heating target area of the workpiece;
And a movement controller for controlling the driving of the first moving unit and the second moving unit to position the first ultrasonic generating source and the second ultrasonic generating source so as to be located in the set heating target area, Stamping forming device.

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