KR20200033528A - Molding device for forming subway window frame - Google Patents

Abstract

The present invention relates to a press mold device for bending an edge of a hole formed to install a glass window in a window frame of a subway. The present invention provides a mold device of a new structure and a new method, which bends the edge of a hole of a workpiece by using a combination of a lower die, an upper punch vertically operating, and a lower slide die vertically operating to be linked to the upper punch when bending the edge of the hole formed in the workpiece. Therefore, the mold device can ensure excellent bending quality and improve the durability and life span of the mold device, and also can bend a product in which the height of a window frame flange exceeds 40 mm without a problem, which broadens the range of standard and specifications of a window frame that can be manufactured, so as to efficiently manufacture various window frames.

Description

Molding device for train window frame molding {MOLDING DEVICE FOR FORMING SUBWAY WINDOW FRAME}

The present invention relates to a mold apparatus for molding a window frame for trains, and more particularly, to a press mold apparatus for bending an edge portion of a hole that is formed to install a glass window on a window frame of a train.

In general, a punching press is a mold device that produces a plate-shaped product through which a scrap of a specific shape is penetrated by applying a shearing force to a predetermined portion of a thin plate-shaped product through a punching operation to take out scraps excluded from the processed material.

In the punching press, a lower die having a punched hole for inserting and fixing scraps is usually inserted into the punching hole of the lower die, and a punching punch punching the work material fixed to the lower die by front-rear operation is installed. It consists of a structure comprising a punch.

Such a punching press generally performs work while allowing the processing material to pass intermittently between the lower die and the upper punch, and the upper punch descends while the processing material is stopped, thereby applying a shearing force to a predetermined portion of the processing material to punch the hole. It is molded into a desired shape by pushing it inside, and the scrap produced by this molding process is discharged to the outside through a punching hole, while performing a forming process of bending the edge portion of a pre-processed hole by 90 °. do.

However, most of the punching presses in the prior art have a method of processing a hole or bending a hole edge by using a shearing force or a pressing force of an upper punch that moves up and down in a state in which a processing material is fixed on a fixed lower die. In the case of bending the edge, there is a difficulty in securing bending quality such as wrinkles in the bending portion or bending at an angle of 90 °.

In addition, most conventional punching presses use a method of bending the processing material at a time by using the pressing force of the upper punch, so a high-capacity press equipment must be used, and the upper punch as well as the lower die are concentrated. There is a disadvantage that the durability of the mold device is reduced and the life is shortened, such as the wear and damage of the punch and the lower die.

Particularly, in a conventional mold apparatus for forming a window frame for a train, wrinkles when the bending width (the height of the window frame flange after bending molding) exceeds 40 mm due to limitations such as structural characteristics of the upper punch and the lower die and an operating method. When molding defects are generated such as this occurs or the corners are crying, and eventually, a window frame flange height exceeding 40 mm is required, after bending below 40 mm, an auxiliary material is added to the window frame, such as insufficient height, to be used. There are disadvantages in terms of production efficiency.

Korean Patent Publication No. 10-1999-001538 Korean Patent Publication No. 10-2004-0090207 Korean Patent Publication No. 10-2006-0054696 Korean Patent Registration No. 10-0674651

Therefore, the present invention has been devised in view of this point, and when forming the edge of a hole formed in a work material, an upper punch operating up and down and a lower slide die operating up and down in conjunction with the upper punch at this time, and a lower section By using a combination of dies to implement a new structure and method of mold device to bend the hole edge of the processed material, excellent bending quality can be secured, durability and life of the mold device can be improved, and the window frame flange The purpose of the present invention is to provide a mold apparatus for molding a window frame for trains that can efficiently manufacture various window frames by widening the width of specifications and specifications that can be manufactured, such as bending molding even products with a height exceeding 40 mm.

In order to achieve the above object, the mold apparatus for molding a train window frame provided by the present invention has the following features.

The mold device for molding the window frame of a train is a mold device that is installed in a press facility and bends an edge portion of a hole formed to install a glass window on a window frame of a train, and consists of a square frame structure having a die hole in the center. An upper punch that operates up and down, a lower die of a square block structure fixed to the press installation while forming a pair of upper and lower punches, and is fitted in an outer circumferential surface of the lower die and installed in a vertically slidable structure, and an upper punch and It is made of a structure that includes a lower slide die of a square frame structure that holds the processed material together from above and below and moves downwards to allow bending molding for the processed material.

In particular, a primary tapered surface of a shape widening outward from the top to the bottom may be formed on the circumferential surface of the upper portion of the lower die. The second tapered surface having a relatively small angle compared to the primary tapered surface may be formed as it goes outward.

Here, a punch tapered surface having the same angle as the secondary tapered surface on the lower die may be formed on the inner surface of the lower end of the upper punch.

Further, it is preferable that the lower slide die is elastically supported by a slide pin installed in a structure that can be moved up and down on the lower die side, so that it can be returned to an initial position when the slide pin is raised.

The mold apparatus for molding a train window frame provided by the present invention has the following effects.

First, by applying a vertical and downward linking operation relationship between the upper punch and the lower slide die, and adopting a clamping process, a primary bending process, and a secondary bending process, by providing a mold device for bending and forming a processed material, processing material It is possible to prevent defects such as wrinkles in the bending portion of the bend and to secure an excellent bending quality, such as bending at an angle of exactly 90 °.

Second, by adopting a method of bending and forming the processed material in two bending processes using the upper punch and the lower slide die and the taper structure of the lower die, it is possible to perform the bending process efficiently with only a small amount of press equipment. In particular, it is possible to improve the durability of the mold apparatus, such as being able to completely eliminate the phenomenon that the load is concentrated on the upper punch, the lower slide die and the lower die, and at the same time, can extend the life.

Third, by adopting a method of sequentially performing the clamping process, the primary bending process, and the secondary bending process sequentially as well as the up and down linkage operation mechanism between the upper punch and the lower slide die, the bending width of the processed material exceeds 40 mm Even if it is, it is possible to completely solve the problem of molding defects such as wrinkles or corners, so that products with a window frame flange height exceeding 40 mm can be molded without problems, making it possible to manufacture window frame specifications and specifications. It has the effect of making various window frames efficiently by widening the width.

1 and 2 is a perspective view showing a mold apparatus for molding a window frame according to an embodiment of the present invention
Figure 3 is a plan view showing a mold apparatus for molding a train window frame according to an embodiment of the present invention
Figure 4 is a cross-sectional view taken along line AA of Figure 3
Figure 5 is a cross-sectional view taken along line BB of Figure 3
Figure 6 is a cross-sectional view taken along line CC of Figure 3
7 is a cross-sectional view taken along line DD of FIG. 3;
8 is a cross-sectional view taken along line EE of FIG. 3;
9A to 9C are cross-sectional views showing an operating state of a mold apparatus for molding a train window frame according to an embodiment of the present invention

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

1 and 2 is a perspective view showing a mold apparatus for molding a train window frame according to an embodiment of the present invention, Figure 3 is a plan view showing a mold apparatus for molding a train window frame according to an embodiment of the present invention, Figures 4 to 8 is a cross-sectional view showing a mold apparatus for molding a train window frame according to an embodiment of the present invention.

As shown in Figures 1 to 8, the train window frame molding mold apparatus is installed in a known press equipment to bend the edge portion of the hole formed to install a glass window on the train window frame, a mold device for bending, processing material It is a mold device that can increase the efficiency of the bending process and secure the bending quality through a combination of an upper punch, a lower slide die, and a lower die having a tapered surface, while holding the hole rim of the hole together.

To this end, the mold apparatus for molding the window frame of the train includes an upper punch 11 that is installed on the upper movable side of a press facility (not shown) and moves down and holds the processing material.

The upper punch 11 has a die hole 10 in the center for penetration of the lower die 12, and is made in a block shape of a square frame structure in which a plurality of reinforcing ribs are formed, and the upper punch 11 made in this way ) Is assembled on the movable side of the press equipment using the upper side of the punch.

Here, the structure for assembling the upper punch 11 to the movable side of the press equipment may be adopted without particular limitation as long as it is a structure commonly known in the art.

On the inner surface of the lower end of the upper punch 11, that is, the inner surface of the lower end of the die hole 10, a punch pressing portion 18 is formed to protrude as a portion that substantially presses the processing material toward the lower die 12 side. At this time, the punch pressing portion 18 protrudes relatively inward than the inner surface of the die hole 10.

Accordingly, a bending operation for the processing material can be performed only with the punch pressing portion 18 in a state where the processing material does not contact the inner surface of the die hole 10.

Particularly, the inner surface of the lower end inner surface of the upper punch 11, that is, the inner surface of the punch pressing portion 18 facing the outer circumferential surface of the lower die 12 is formed of a punch taper surface 16, wherein the punch taper surface (16) can be made in a form conformable to the secondary tapered surface 15 while having the same angle of inclination as the secondary tapered surface 15 to be described later on the lower die 12.

Accordingly, the work material can be bent while being pressed between the secondary tapered surface 15 on the lower die 12 side and the punched tapered surface 15 on the upper punch 11 side.

In addition, the mold apparatus for molding the window frame of the train is installed on the lower fixed side of the press facility (not shown), and is paired with the upper punch 11 at the time of bending molding, that is, the lower part forming one pair of upper and lower punches 11 Includes die 12.

The lower die 12 is formed in a hollow rectangular block shape with a plurality of reinforcing ribs formed inside and outside, and the inside of the lower die 12 is made of a press equipment by using the bottom side of the die. It is assembled on the fixed side.

Here, the structure for assembling the lower die 12 to the fixed side of the press equipment may be adopted without particular limitation as long as it is a structure commonly known in the art.

In particular, the lower die 12 is provided with a primary tapered surface 14 and a secondary tapered surface 15 as a structure that allows a bending operation for a material to be processed stepwise over several times.

To this end, a primary tapered surface 14 is formed around the upper circumferential surface of the lower die 12, that is, around the upper 4 surfaces of the lower die 12 formed in a square block shape, extending outward from top to bottom. It is possible to bend the primary material at a predetermined angle while being bent by the primary tapered surface 14 at this time.

Here, the angle of the primary tapered surface 14 is preferably set to about 20 to 30 ° based on the vertical line.

In addition, around the upper circumferential surface of the lower die 12, that is, the upper four surfaces of the lower die formed in the form of a square block, 2 extending from the lower end of the primary tapered surface 14 to the outside from the top to the bottom. The primary taper surface 14 is formed, and the primary bending material can be bent at an angle of 90 ° while being bent by the secondary taper surface 14 at this time.

At this time, the secondary tapered surface 14 is preferably set at a relatively small angle, for example, about 1 to 10 °, relative to the primary tapered surface 14 based on a vertical line.

Accordingly, the processing material descending together with the upper punch 11 and the lower slide die 13 to be described later is in close contact with the primary taper surface 14 and is continuously bent while being bent and primary bending, and then the secondary taper surface. (15) The second bending is molded while being in close contact with it, and in the end, the entire bending angle (90 °) is divided into two in turn to perform bending molding at a predetermined angle, so that the processed material can be accurately molded at 90 °. In addition, it is possible to minimize the load applied to the power or mold device required for bending.

In addition, the mold apparatus for molding the window frame of the train includes a lower slide die 13 as a means of clamping the processing material together with the upper punch 11 and pulling the processing material downward.

The lower slide die 13 is formed in a block shape of a square frame structure having a plurality of reinforcing ribs, and the lower slide die 13 is fitted to the outer circumferential surface of the lower die 12 and the lower die ( It is installed in a structure that can slide up and down while receiving close guidance to the vertical surface 19 of 12).

The lower slide die 13 installed in this way is adhered to the bottom surface of the processing material by using the upper surface of the die, and while holding the processing material up and down with the upper punch 11 positioned on the upper side with the processing material interposed therebetween. It will play a role in making the bending molding for the processed material.

Then, a slide pin 17 is provided as a means for up and down operation of the lower slide die 13, and the slide pin 17 is installed in a structure that can be moved up and down on the lower die 12 side. The slide pin 17 becomes able to support the lower end of the lower slide die 13 through the upper end.

Accordingly, the lower slide die 13 moves downward together by the pressing force of the upper punch 11 when the upper punch 11 is lowered, and the lower slide die 13 when the upper punch 11 is raised. ) Is the position to maintain the same level as the top of the initial position, for example, the upper end of the lower die 12, while being lifted upward by the slide pin 17 that is elastically raised by receiving the restoring force using the force of the spring (not shown) Can be returned to.

Here, the slide pin is pressed during the lowering operation of the press equipment (upper punch lowering operation), and the slide pin is connected to this during the upward operation of the press equipment (upper punching operation) and the slide pin is restored to the upper side by receiving spring force. The structure to be used may be adopted without particular limitation as long as it is a structure commonly known in the art.

Therefore, looking at the operating state of the mold apparatus for forming a train window frame configured as described above is as follows.

9A to 9C are cross-sectional views showing an operating state of a mold apparatus for molding a train window frame according to an embodiment of the present invention.

9A to 9C, in the state where the upper punch 10 and the lower slide die 13 and the lower die 12 are spaced up and down, the lower slide die 13 maintaining the same surface with each other And a processing material 100 serving as a train window frame material is placed on the upper surface of the lower die 12.

Next, during the lowering operation of the press equipment, the upper punch 11 is lowered, and at the same time, the processing material 100 is tightly caught between the upper punch 11 and the lower slide die 13.

Next, by the continuous lowering operation of the upper punch 11, the lower slide die 13, as well as the upper punch 11 and the processing material 100 in the lower slide die 13 is moved down, so In the process of moving, the processing material 100 is first bend-molded at a predetermined angle while being in close contact with the primary tapered surface 14 of the lower die 12.

Subsequently, the upper punch 11 and the lower slide door 12, and the processed material 100 interposed therebetween moves downward, and in the process of moving the processed material 100, the primary tapered surface ( 14) Secondary bending is molded at an angle of 90 ° while being in close contact with the secondary tapered surface 15 connected to each other.

Subsequently, after the primary bending molding and the secondary bending molding of the work material 100 are completed, the upper punch 11 and the lower slide die 13 are returned to their original positions, and the lower die 12 is from the side. By taking out the work material 100, that is, the work material 100 in which the edge portion of the hole is bent at an angle of 90 °, one cycle operation of the mold apparatus for molding a window frame is completed.

By adopting a method of dividing the entire bending angle (90 °) in two steps and performing bending forming step by step at a predetermined angle during bending forming of the processing material 100 in this way, the processing material 100 can be bent by 90 ° accurately. In addition, it is possible to minimize the load applied to the power or mold device required for bending.

And, as in the past, it is a molding method in which the processing material is pulled down and bent by an upper punch and a lower slide die, rather than bending forming by instantaneous striking of the punch, so that the height of the window frame flange exceeds 40 mm. Bending molding is also possible for products.

As described above, in the present invention, the hole edge of the processed material is bent by using a combination of an upper punch operating up and down, a lower slide die operating up and down in conjunction with the upper punch, and a lower die having a two-stage tapered surface. By providing a mold device of new structure and method, it is possible to secure excellent bending quality, improve the durability and life of the mold device, and widen the range of window frames specifications and specifications that can be produced to efficiently manufacture various window frames. .

10: die hole
11: upper punch
12: lower die
13: lower slide die
14: primary tapered surface
15: secondary tapered cotton
16: punch taper side
17: slide pin
18: punch pressing part
19: vertical plane

Claims (5)

A mold device that is installed in a press facility to bend the edge of a hole formed to install a glass window on a train window frame.
It consists of a square frame structure having a die hole (10) in the center, the upper punch (11) operating up and down during the operation of the press equipment;
A lower die 12 of a square block structure fixed to the press equipment side while forming a pair of upper and lower punches 11;
The lower die 12 is fitted to the outer circumferential surface and is installed in a structure that is slidable up and down and holds the processing material up and down together with the upper punch 11, while lowering the square frame structure that allows bending molding for the processing material to be made Slide die 13;
Mold apparatus for window frame molding, characterized in that it comprises a.
The method according to claim 1,
The upper die circumferential surface of the lower die 12, the mold device for molding a window frame, characterized in that the primary tapered surface 14 is formed to be wider outward from the top to the bottom.
The method according to claim 1 or claim 2,
On the circumferential surface of the upper end portion of the lower die 12, the secondary taper has a relatively small angle compared to the primary taper surface 14 as it continues from the lower end of the primary taper surface 14 to the outside from the top to the bottom. Molding apparatus for train window frame molding, characterized in that the tapered surface (15) is formed.
The method according to claim 1,
A mold for forming a window frame for a train, characterized in that a punch tapered surface 16 having the same angle as a secondary tapered surface 15 on the lower die 12 is formed on the inner surface of the lower end of the upper punch 11. Device.
The method according to claim 1,
The lower slide die 13 is elastically supported by the slide pin 17 installed in a structure that can be moved up and down on the lower die 12 side, so that it can be returned to the initial position when the slide pin 17 is raised. Molding device for train window frame molding, characterized in that.

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