KR101349823B1 - Forming and deep drawing apparatus using of ultrasonic vibration - Google Patents

Abstract

The present invention relates to a forming device using ultrasonic vibration which makes a lubricant unnecessary by generating vibration in the direction parallel to the forward and backward progressing directions of a punch for minimizing the friction during a deep drawing process; which has excellent formability; and which comprises: a punch capable of pressing a processed object; a die capable of supporting a part of one side of the processed object; a holder supporting a part of the other side of the processed object; a vibration plate which is disposed in between the die and the processed object and which delivers ultrasonic vibration to the processed object; and a vibration generating unit applying the ultrasonic vibration to the vibration plate.

Description

Forming apparatus using ultrasonic vibration and deep drawing apparatus using ultrasonic vibration {Forming and deep drawing apparatus using of ultrasonic vibration}

The present invention relates to a molding apparatus using ultrasonic vibrations and a deep drawing apparatus using ultrasonic vibrations, and more particularly, to generate vibrations in a direction parallel to the forward and backward direction of the punch to minimize friction during deep drawing processing, thereby eliminating the need for lubricants. The present invention relates to a molding apparatus using ultrasonic vibration and a deep drawing apparatus using ultrasonic vibration capable of improving the formability of a material.

In general, in order to manufacture a plate shaped article of a specific shape using a metal plate, first, the raw material is dissolved to make a plate through slab casting and hot / cold rolling. Then, the plate is cut to a predetermined size, and the cut plate is deep drawn using a vertical mold.

In general, in sheet metal processing, the external force acts to generate tensile stress and produces a product with a bottom. It is used a lot to produce.

During such deep drawing processing, the edge of the workpiece may be wrinkled by compressive stress while the workpiece is closed by lowering the punch, and an appropriate vertical load may be applied by using a holder to prevent this. This can prevent the formation of wrinkles. At this time, the holder causes friction with the plate, which is the workpiece, in order to reduce such friction, conventionally, lubricating oil was used.

Conventional methods using such lubricants require a lubricating oil washing process to remove the lubricating oil, and in a high temperature and high pressure environment, the lubricating oil is difficult to be evenly applied to the workpiece, thereby preventing the appearance of the product from being clean.

The idea of the present invention is to solve this problem, by generating ultrasonic vibrations oscillating in the direction parallel to the forward and backward direction of the punch, minimizing the friction force during deep drawing process, no lubricant is required, and improves the formability of the material Various types of products can be processed, the appearance of the product can be cleaned, productivity can be improved by reducing the production time and production cost of the product, and the molding cost can be easily reduced with low force, thus reducing the manufacturing cost of the device. The present invention provides a molding apparatus using ultrasonic vibration and a deep drawing apparatus using ultrasonic vibration. However, these problems are illustrative, and thus the scope of the present invention is not limited thereto.

According to an aspect of the present invention for solving the above problems, a molding apparatus using ultrasonic vibration includes a punch capable of pressing a workpiece; A die capable of supporting a portion of one side of the workpiece; A holder for supporting a portion of the other surface of the workpiece; A diaphragm installed between the die and the workpiece and transmitting ultrasonic vibrations to the workpiece; And a vibration generating device for applying ultrasonic vibration to the diaphragm.

In addition, according to the spirit of the present invention, the die and the diaphragm may be integrally formed.

In addition, according to the spirit of the present invention, the vibration generating device, a transducer for converting the electrical energy of the oscillator (generator) into ultrasonic vibration energy using a piezoelectric element; A booster installed in the support body and transmitting the vibration energy; And a horn installed between the booster and the diaphragm to amplify the amplitude of ultrasonic vibration by using resonance.

In addition, according to the spirit of the present invention, the diaphragm may be installed at right angles to the forward and backward direction of the punch.

In addition, according to the spirit of the present invention, the vibration generating device may be installed so as to be connected to at least one corner of the diaphragm, respectively, and to vibrate in a direction parallel to the forward and backward directions of the punch.

In addition, according to the spirit of the present invention, the vibration generating device, a vibrator cooler having a refrigerant supply pipe is installed on one side, the refrigerant discharge pipe is installed on the other side so as to surround the vibrator, and cool the vibrator using a refrigerant; It may further include.

In addition, according to the spirit of the present invention, the refrigerant may be made by selecting at least one of air, gas, inert gas, cooling water, oil, and combinations thereof.

In addition, according to the spirit of the present invention, the die and the diaphragm may be installed to be spaced apart from each other at a fine interval.

In addition, the molding apparatus using ultrasonic vibration in accordance with the spirit of the present invention, is installed in the holder or punch, easy replacement of the heating body, the cartridge heater (cartridge heater) for heating the workpiece; may further include a have.

In addition, the molding apparatus using the ultrasonic vibration according to the spirit of the present invention, a cartridge heater is installed on the die, easy to replace the heating body, and heat the workpiece.

In addition, the molding apparatus using the ultrasonic vibration according to the spirit of the present invention may further include a knock-out cylinder (knock-out cylinder) is installed that separates the processed workpiece from the die.

On the other hand, the deep drawing device using ultrasonic vibration in accordance with the idea of the present invention for solving the above problems, a punch capable of pressing the workpiece; A die capable of supporting a portion of one side of the workpiece; A holder for supporting a portion of the other surface of the workpiece; A diaphragm installed between the die and the workpiece and transmitting ultrasonic vibrations to the workpiece; And a vibration generating device for applying ultrasonic vibration to the diaphragm.

On the other hand, the deep drawing device using ultrasonic vibration in accordance with the idea of the present invention for solving the above problems, a punch capable of pressing the workpiece; A die capable of supporting a portion of one side of the workpiece; A holder for supporting a portion of the other surface of the workpiece; And a vibration generating device for applying ultrasonic vibration to the holder.

The molding apparatus using the ultrasonic vibration and the deep drawing apparatus using the ultrasonic vibration in accordance with the spirit of the present invention, by reducing the friction between the holder and the workpiece, no lubricant is required, can process various types of products, the appearance of the product clean The present invention provides a molding apparatus using ultrasonic vibration, which can improve the productivity and reduce the manufacturing cost of the apparatus. However, such a problem is exemplary, and the scope of the present invention is not limited by these effects.

1 is a partial cross-sectional view showing a molding apparatus using ultrasonic vibration in accordance with some preferred embodiments of the present invention.
FIG. 2 is a partial cross-sectional view showing a workpiece processing state of the molding apparatus using the ultrasonic vibration of FIG. 1.
3 is a side view of a molding apparatus using ultrasonic vibration in accordance with some preferred embodiments of the present invention.
4 is a perspective view of FIG.
5 is a photograph of a workpiece showing the effect of the molding apparatus using ultrasonic vibration in accordance with some preferred embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, the first member, part, region, layer or portion, which will be discussed below, may refer to the second member, component, region, layer or portion without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the device faces in the other direction (rotated 90 degrees relative to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

Hereinafter, a molding apparatus using ultrasonic vibration according to some exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial cross-sectional view showing a molding apparatus 100 using ultrasonic vibration in accordance with some preferred embodiments of the present invention, Figure 2 is a processing of the workpiece (1) of the molding apparatus 100 using the ultrasonic vibration of Figure 1 3 is a side view of FIG. 1, and FIG. 4 is a perspective view of FIG. 1.

1 to 4, the molding apparatus 100 using ultrasonic vibration according to some preferred embodiments of the present invention, the die 10, the holder 41, the punch 30 and , The diaphragm 20 and the vibration generating device 22 may be included.

Here, the die 10 may support a portion of one surface of the workpiece 1, that is, a portion of the lower surface of the workpiece 1 in the drawing, and the punch 30 may be inserted into the center of the die 10. Punch holes can be formed.

In addition, the holder 41 is capable of supporting a part of the other surface of the workpiece 1, that is, a part of the upper surface of the workpiece 1 in the drawing, and by lowering the punch 30 The edge of the workpiece 1 may be crimped while the workpiece 1 is closed, and the holder 41 may impose an appropriate vertical load on the workpiece 1. It can serve to prevent the formation of wrinkles.

In addition, the punch 30 is capable of pressing the workpiece 1, and although not illustrated, the punch 30 may press the workpiece 1 connected to a press device and supported by the die 10. Device.

Here, although the molding apparatus 100 using ultrasonic vibration according to some embodiments of the present invention illustrates a deep drawing for forming a plate-shaped workpiece 1 in a cup form, other drawing and extrusion It is possible to be applied in all kinds of molding processes that vary the shape of the punch 30 and the die 10, such as blanking.

In addition, the diaphragm 20 is provided between the die 10 and the work 1, and is a plate material that transmits ultrasonic vibration to the work 1.

Here, the diaphragm 20, the die 10 and the diaphragm 20 may be installed to be spaced apart from each other at a fine interval (S) so as to be vibrated irrespective of the die 10.

Alternatively, the diaphragm 20 may be formed integrally with the die 10.

In addition, the vibration generator 22 applies ultrasonic vibration to the diaphragm 20, and includes a vibrator 22-3, a booster 22-2, a booster, and a horn 22-1. It may include a horn.

Here, the vibrator 22-3 is a device that converts electrical energy of an oscillator into ultrasonic vibration energy by using a piezoelectric element. The vibration energy does not necessarily have ultrasonic waves, but may have various types of wavelengths.

In addition, the booster 22-2 is a device installed on the support body 50 to transmit vibration energy to the horn 22-1.

The horn 22-1 is provided between the booster 22-2 and the diaphragm 20, and is an apparatus that amplifies the amplitude of ultrasonic vibration by using resonance. The horn 22-1 is not necessarily conical, but may be manufactured in various forms such as a cylinder, an elliptic cylinder, a polygonal cylinder, and a polyhedron, which can amplify the amplitude.

Here, the support body 50 may be formed with a through window (50a) on one side so as to visually check the pressing state of the punch (30).

On the other hand, the diaphragm 20 may be installed at right angles to the forward and backward direction of the punch 30, the horn 22-1, may be connected to the four corners of the diaphragm 20, respectively, It may be installed in a direction parallel to the forward and backward direction of the punch 30.

Here, the vibration generating device 22, in order to improve the vibration intensity of the ultrasonic wave, may be installed in connection with the diaphragm 20 in various numbers, such as at least one, two, three, four, four or more. And, even if not necessarily parallel to the forward and backward direction of the punch 30, for example, it may be provided at a specific angle or may be provided perpendicular to the forward and backward direction of the punch 30.

On the other hand, the vibration generating device 22, the refrigerant supply pipe 61 is provided on one side so as to surround the vibrator (22-3) to cool the vibrator (22-3) using a refrigerant, the other side The refrigerant discharge pipe 62 may further include a vibrator cooler 60 is installed.

Here, the refrigerant may be configured to form an air-cooled cooler using air which is generally easy to use. In addition, various refrigerants, inert gases, cooling water, oil, and the like may be applied as the refrigerant.

In addition, as shown in Figures 1 and 2, it is also possible to further install a separate vibration generating device 80 for applying ultrasonic vibration to the holder (41). Here, the vibration generating device 80 may have the same configuration as the vibration generating device 22 described above, a detailed description thereof will be omitted.

Accordingly, the workpiece 1 receives vibrations from the vibration generating devices 22 and 80 respectively installed on both sides of the workpiece 41 and the workpiece 1 or the die 10 and the workpiece. It is possible to minimize the friction generated in (1).

On the other hand, as shown in Figures 1 to 4, the molding apparatus 100 using the ultrasonic vibration according to some embodiments of the present invention, the holder 41, the punch 30 or the die 10 And a knockout pin installed in the die 10 for easy replacement of the heating body, separating the cartridge heater 42 for heating the workpiece 1 and the finished workpiece 1 from the die 10. The knock-out cylinder 70 may further include a knock-out cylinder 70.

Here, as shown in FIG. 3, the cartridge heater 42 may be removably inserted into a rod-shaped heating body in the cartridge hole H, and a wide variety of heating bodies may be applied.

Therefore, referring to the operation of the molding apparatus 100 using ultrasonic vibration according to some of the silencing examples of the present invention, as shown in FIG. 1, for example, at four corners of the diaphragm 20, for example. Ultrasonic vibrations generated by each of the four vibration generating devices 22 installed are transmitted to the diaphragm 20 spaced apart from the die 10 at a minute interval S so that the diaphragm 20 causes the punch 30. Ultrasonic vibration may be performed while the device is moved back and forth in a direction parallel to the forward and backward direction of the waveguide.

Subsequently, as shown in FIG. 2, when the punch 30 presses the workpiece 1 ultrasonically vibrated by the diaphragm 20, the workpiece 1 is punched by the diaphragm 20. Ultrasonic oscillation in the same direction as the forward direction of 30 results in minimizing the frictional force between the holder 41 and the workpiece 1 or the die 10 and the workpiece 1 so that the punch 30 It can be easily pinched and stretched easily.

At this time, since the diaphragm 20 is separated by the fine spacing S and the die 10 firmly fixed to one side of the support body 50, the machining proceeds regardless of the die 10. It can be freely ultrasonic vibration while the ultrasonic vibration can be transmitted as it is to the workpiece (1).

In addition, the workpiece 1 of FIG. 2 may be heated by the heaters 42 and 11, and the vibrator 22-3 of the vibration generator 22 uses the vibrator cooler 60. By cooling, the vibrator 22-3 can be protected from a high temperature environment.

Subsequently, the user visually determines the progress of the punch 30 through the through window 50a, or operates the knockout cylinder 70 using a separate sensor to finish the workpiece ( 1) can be separated from the die 10.

5 is a photograph of a workpiece showing the effect of the molding apparatus using ultrasonic vibration in accordance with some preferred embodiments of the present invention.

Therefore, as shown in Fig. 5, when the drawing ratio (DR = D / d, where D is the diameter of the material, d is the diameter of the punch) is 2.34, the workpiece picture formed without the ultrasonic vibration applied In the case of (a), a fracture occurred in which the workpiece was torn, but no damage occurred in the case of the workpiece (b) to which ultrasonic vibration was applied using the molding apparatus using the ultrasonic vibration of the present invention. I could confirm the note.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1: Workpiece
10: die
20: punch
30: diaphragm
22, 80: vibration generating device
22-1: Horn
22-2: Booster
22-3: oscillator
50: support body
50a: through-window
60: oscillator cooler
61: refrigerant supply pipe
62: refrigerant discharge pipe
S: fine spacing
41: holder
42: cartridge heater
70: knockout cylinder
71: knockout pin
H; Cartridge hole

Claims (13)

A punch capable of pressing the work piece;
A die capable of supporting a portion of one side of the workpiece;
A holder for supporting a portion of the other surface of the workpiece;
A diaphragm installed between the die and the workpiece, the vibration plate transmitting ultrasonic vibration to the workpiece and spaced apart from each other at minute intervals so as to vibrate regardless of the die; And
A vibration generating device for applying ultrasonic vibration to the diaphragm;
Lt; / RTI >
The vibration generating device,
A transducer for converting electrical energy of a generator into ultrasonic vibration energy using a piezoelectric element;
A booster installed in the support body and transmitting the vibration energy;
A horn installed between the booster and the diaphragm and amplifying the amplitude of ultrasonic vibration using resonance; And
A vibrator cooler surrounding the vibrator and having a coolant supply pipe installed at one side to cool the vibrator using a coolant, and a coolant discharge pipe installed at the other side;
Forming apparatus comprising an ultrasonic vibration. delete delete The method of claim 1,
The diaphragm is formed by forming an ultrasonic vibration perpendicular to the forward and backward direction of the punch. The method of claim 1,
The vibration generating device is connected to at least one corner of the diaphragm, each forming apparatus using ultrasonic vibration is installed so that the vibration is made in a direction parallel to the forward and backward direction of the punch. delete The method of claim 1,
And the coolant is selected from at least one of air, gas, inert gas, cooling water, oil, and a combination thereof. delete The method of claim 1,
A cartridge heater installed in the holder or punch, for easy replacement of the heating body, and for heating the workpiece;
Molding apparatus using ultrasonic vibration further comprising. The method of claim 1,
A cartridge heater installed on the die and for easily replacing a heating element and heating the workpiece;
Molding apparatus using ultrasonic vibration further comprising. The method of claim 1,
A knock-out cylinder having a knock-out pin for separating the processed workpiece from the die;
Molding apparatus using ultrasonic vibration further comprising. A punch capable of pressing the work piece;
A die capable of supporting a portion of one side of the workpiece;
A holder for supporting a portion of the other surface of the workpiece;
A diaphragm installed between the die and the workpiece, the vibration plate transmitting ultrasonic vibration to the workpiece and spaced apart from each other at minute intervals so as to vibrate regardless of the die; And
A vibration generating device for applying ultrasonic vibration to the diaphragm;
Lt; / RTI >
The vibration generating device,
A transducer for converting electrical energy of a generator into ultrasonic vibration energy using a piezoelectric element;
A booster installed in the support body and transmitting the vibration energy;
A horn installed between the booster and the diaphragm and amplifying the amplitude of ultrasonic vibration using resonance; And
A vibrator cooler surrounding the vibrator and having a coolant supply pipe installed at one side to cool the vibrator using a coolant, and a coolant discharge pipe installed at the other side;
Deep drawing device using an ultrasonic vibration comprising a. delete

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