KR20140050821A

KR20140050821A - Stick release system in hot forging press apparatus

Info

Publication number: KR20140050821A
Application number: KR1020120117106A
Authority: KR
Inventors: 조일우
Original assignee: 주식회사 제이앤에이취프레스
Priority date: 2012-10-22
Filing date: 2012-10-22
Publication date: 2014-04-30

Abstract

Disclosed is a stick releasing system and, more specifically, to a stick releasing system of a hot forcing press apparatus. The hot forcing press apparatus comprises: a bed; a frame coupled with the bed; a crank shaft coupled with the frame; a connecting rod coupled with the crank shaft; and a slide moving upward and downward according to the movement of the connecting rod. The stick releasing system includes: a controlling eccentric shaft coupled to the connecting rod on a slide side; a controlling screw coupled to a screw nut; a controlling lever transferring a controlling screw motion to the motion of the controlling eccentric shaft by being coupled with the controlling eccentric shaft and the screw nut; and a hydraulic system which is connected with one end of the controlling screw and which makes the controlling screw move by oil pressure.

Description

Technical Field [0001] The present invention relates to a stick release system for a hot forging press apparatus,

Disclosed herein are a stick release system, and more particularly, to a stick release system of a hot forged press apparatus.

Forging process is a processing method for forming a desired shape product while minimizing the loss of material, and the basic core parts of the automobile, ship, and aircraft industry can be mass produced, and its application range is gradually increasing. In particular, the plastic processing industry is an optimal process for producing high-quality, high-quality parts that can be upgraded in product quality and difficult to substitute for other manufacturing processes. Recently, existing processes have been advanced and combined with processing technology and new technologies. Technology development and practical use are rapidly spreading in accordance with the trend of high-function and high value-added products.

Forging is a metal working method of forming a material into a desired shape by applying a compressive load by a mechanical method. In general, forging is performed at a temperature higher than the temperature at which recrystallization progresses in the material, Forging at a lower temperature is called cold forging.

The hot forging is to heat the steel to a high temperature of 1000 ° C to 1250 ° C to reduce the deformation resistance so that it can be easily deformed with a small force to facilitate molding, And it is one of the most commonly used forging methods because it has the advantage of being able to make the molding of complicated shape with high productivity because it is fast in production speed. A typical apparatus used for hot forging includes a feed conveyor supplying a forging material called a billet, a conveying device for continuously conveying the material to be fed from the feed conveyor to the upper and lower molds of the forging press, and a forging press And a discharge conveyor for discharging the molded product.

The cold forging is capable of forming a net shape, thereby greatly improving the material utilization rate, eliminating the post-cutting process, and reducing the resources and energy. In addition, since it is possible to suppress the occurrence of environmentally harmful elements due to heating of materials, and it is possible to produce high-precision parts in the case of automobile parts in an environmentally friendly process, production of various kinds of small quantities is mainly made.

In this specification, a stick releasing system of a hot forging press apparatus capable of releasing a stick simply by using hydraulic pressure is disclosed.

The unsticking system of the hot forging press apparatus disclosed in this specification includes a bed, a frame to be coupled with a bed, a crank shaft to be coupled to the frame, a connecting rod to be coupled to the crank shaft, The stick releasing system includes a control eccentric shaft fastened to a connecting rod on a slide side, an adjusting screw engaged with a screw nut, A control lever coupled to the control eccentric shaft and the screw nut to transmit the movement of the control screw to the movement of the control shaft, and a hydraulic system connected to one end of the control screw to enable movement of the control screw by hydraulic pressure. One end of the adjusting screw coupled to the overload shaft may have a joint structure, and the overload shaft may be coupled through the overload piston and the cylinder cover.

Here, the hydraulic system includes an overload rod, which is connected to one end of the control screw, an overload piston to which movement of the overload shaft is transmitted, a cylinder cover that covers the cylinder, which is a moving space of the overload piston, and a hydraulic pressure supply unit, .

Meanwhile, the stick releasing system of the hot forging press apparatus may further include a slide adjusting device connected to the other end of the adjusting screw and adjusting the slide by a hydraulic motor.

According to the inventions disclosed in this specification, there is an effect that the stick can be released simply by using the hydraulic pressure.

1 is a view for explaining the concept of a hot forging press apparatus disclosed in this specification.
2 is a view for explaining a stick release system of the hot forging press apparatus disclosed in this specification.
3 is a detailed view of the hydraulic system of the unlocking system disclosed in this specification.
Fig. 4 is a view for explaining the configuration of the slide adjusting device shown in Fig. 2. Fig.
FIG. 5 is a view similar to FIG. 2, showing the operation of the crankshaft 502 as the control screw 501 moves.
6 is a view for showing the operation of the joint unit shown in FIG.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. It is also to be understood that all conditional terms and examples recited in this specification are, in principle, expressly intended for the purpose of enabling the inventive concept to be understood and are not to be construed as limited to such specifically recited embodiments and conditions do.

It is also to be understood that the detailed description, as well as the principles, aspects and embodiments of the invention, as well as specific embodiments thereof, are intended to cover structural and functional equivalents thereof. It is also to be understood that such equivalents include all elements contemplated to perform the same function irrespective of the currently known equivalents as well as the equivalents to be developed in the future, i.e., the structure. It should be understood, however, that the invention as defined by the appended claims is not necessarily limited in its scope to the use of any means capable of providing the functionality as the functions provided by the various listed means are combined and combined with the manner in which the claims require. Should be understood as equivalent to

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: . In the following description, a detailed description of known technologies related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily blurred. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining the concept of a hot forging press apparatus disclosed in this specification.

1, a hot forging press apparatus includes a bed 101, a frame 102 fastened to the bed 101, a tie rod system 104 fastened to the frame 102, A slide 103, a crank shaft 106, a connecting rod 105, and the like. When the crankshaft 106 mounted on the frame 102 is rotated by the operation of a motor (not shown), the hot forging press apparatus moves the slide 103 downward in the direction of the bed 101, ) Is forged. That is, the upper mold is mounted on the side of the slide 103, the lower mold is mounted on the side of the bed 101, and as the slide 103 descends by the operation of the crankshaft 106, And is subjected to a large pressure applied to the forged part of the disposed metal material.

Meanwhile, a stick phenomenon may occur during the operation of the hot forging press apparatus. In the stick phenomenon, the crankshaft 106 and the upper mold and the lower mold are fixed to each other during the operation of the press apparatus, so that the crankshaft 106 can not rotate any longer and extreme pressure is generated between the molds or between the forged product and the mold. This is caused, for example, in the case where a malfunction of the press apparatus occurs or the thickness of the forged article is thicker than the distance between the upper mold mounted on the slide 103 and the lower mold mounted on the bed 101, or the like. If such a stick phenomenon occurs, excessive overload is applied to a motor for operating the crankshaft 106, and the motor is damaged. In addition, as described above, it may be necessary to precisely adjust the interval between the slide 103 and the bed 101 side in accordance with conditions such as the thickness of the forged item, and in such a case, it is necessary to adjust the slide 103 . Hereinafter, the stick release system for releasing the stick will be described in detail.

2 is a view for explaining a stick release system of the hot forging press apparatus disclosed in this specification.

2, the hot forging press apparatus disclosed in this specification comprises a bed 101, a frame 102 to be coupled to the bed 101, a crankshaft (not shown) A connecting rod 105 to be coupled to the crankshaft 106 and a slide 103 to move up and down according to the movement of the connecting rod 105. The unlocking system of the hot forging press apparatus includes an adjusting eccentric shaft 204 fastened to the connecting rod 203 on the slide 202 side, an adjusting screw 207 fastened to the screw nut 205, an adjusting eccentric shaft 204 And an adjusting lever 206 which is coupled with the screw nut 205 and transmits the motion of the adjusting screw 207 to the motion of the adjusting eccentric shaft 204 and the adjusting screw 207, And a hydraulic system 208 that allows movement of the piston 207.

That is, when the adjusting screw 207 is moved by the hydraulic system 208, the screw nut 205 fastened to the adjusting screw 207 moves, and the movement of the screw nut 205 is controlled by the adjusting lever 206, (204). As the adjustment eccentric shaft 204 is moved, the connecting rod 203 moves, and the slide 202 moves according to the movement of the connecting rod 203. By doing so, the slide (202) and the mold (not shown) can be separated from each other.

A detailed description of the hydraulic system 208 connected to one end of the adjusting screw 207 will be described later.

The other end of the adjusting screw 207 may be connected to a slide adjusting device 209 for adjusting the slide by a hydraulic motor. The slide adjusting device 209 is a device for accurately adjusting the distance between the slide 202 and the bed side. In this case, one end of the adjusting screw 207 is connected to the hydraulic system 208 for releasing the stick, and the other end of the adjusting screw 207 is connected to the slide adjusting device 209, Stick release and slide adjustment functions can be performed together. Since the adjustment screw 205 performs the function of moving the slide 202 through the connecting rod 203, the function of the stick release and the slide adjustment can be performed together with this configuration.

3 is a detailed view of the hydraulic system of the unlocking system disclosed in this specification.

3, the hydraulic system includes an overload shaft 302 coupled to one end 301 of the control screw, an overload piston 303 to which movement of the overload shaft 302 is transmitted, an overload piston 303, A cylinder cover 304 covering the cylinder 305 which is a moving space of the cylinder cover 304 and a hydraulic pressure supply unit (not shown) supplying the hydraulic pressure to the cylinder cover 304 (cylinder). One end 301 of the adjustment screw coupled to the overload shaft 302 may have a joint structure. With this joint structure, it is possible to facilitate the movement of the adjustment screw 207 by the slide adjustment device 209 described with reference to FIG. On the other hand, the overload shaft 302 can be coupled through the overload piston 303 and the cylinder cover 304. The hydraulic pressure supply portion can supply the hydraulic pressure to the space (cylinder) by the overload piston 303 and the cylinder cover 304. [

When the stick is generated, hydraulic pressure is applied between the overload piston 303 and the adjustment screw 207 and the screw nut 205 described in FIG. 2, thereby moving the slide 202 upward. At this time, The slide 202 and the mold are released. When the stick is released and restored, hydraulic pressure is supplied into the cylinder cover 304 to be restored.

Fig. 4 is a view for explaining the configuration of the slide adjusting device shown in Fig. 2. Fig.

4, the slide adjusting device 209 is provided with a hydraulic motor 402 for enabling the movement of the adjusting screw 401 by hydraulic pressure, a digital encoder 403 for adjusting the hydraulic motor 402, And the other end of the control screw 401 is connected to the other end of the control joint 401 and the control screw 401, A control screw joint 405 connected by a motor bracket 407 and a universal joint 406 connecting the motor joint 404 and the control screw joint 405. Such a slide adjusting device 209 can be attached to the slide 202.

FIG. 5 is a view similar to FIG. 2, showing the operation of the crankshaft 502 as the control screw 501 moves. (FIG. 5A) moving to the left and FIG. 5B moving to the right (FIG. 5B) are shown.

6 is a view for showing the operation of the joint unit shown in FIG. It has been shown that the control lever 602 moves left and right as the joint portion 602 moves up and down.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

101: Bed
102: frame
103: Slide
105: connecting rod
106: Crankshaft

Claims

A crank shaft to be coupled with the frame, a connecting rod to be coupled to the crank shaft, and a slide to move up and down according to the movement of the connecting rod. ) For a hot forging press apparatus,
The stick release system
An adjusting eccentric shaft fixed to the connecting rod on the slide side;
An adjusting screw which is fastened with a screw nut;
An adjusting lever that is coupled to the adjusting eccentric shaft and the screw nut to transmit the motion of the adjusting screw to the motion of the adjusting eccentric shaft; And
And a hydraulic system connected to one end of the adjusting screw and enabling movement of the adjusting screw by hydraulic pressure.

The method according to claim 1,
The hydraulic system
An overload shaft coupled to one end of the adjusting screw;
An overload piston to which movement of the overload axis is transmitted;
A cylinder cover covering a cylinder which is a moving space of the overload piston; And
And a hydraulic pressure supply portion for supplying hydraulic pressure to the cylinder cover.

3. The method of claim 2,
And one end of the adjusting screw coupled to the overload shaft has a joint structure.

The method of claim 3,
And the overload axis is coupled through the cylinder cover and the overload piston.

5. The method of claim 4,
Further comprising a slide adjusting device connected to the other end of the adjusting screw and adjusting the slide by a hydraulic motor.

6. The method of claim 5,
Wherein the slide adjusting device is attached to the slide.