KR20090098156A - Scrap ejecting apparatus of press mold - Google Patents

Abstract

A scrap ejecting apparatus of a press is provided to prevent scrap from being caught between the blades of a scrap cutter as the scrap is ejected by the expansion of an elastic kicker. A scrap ejecting apparatus of a press comprises a cylinder unit(21) and an elastic kicker(31). The cylinder unit is composed of a housing(27), a return spring(29), and a piston rod(23). One side of circumferential surface of the housing is connected to one outer side of a bottom mold via a mounting holder(25). The inside of the housing is segmented into a gas chamber(C1) and a spring chamber(C2) by a piston(33). The housing has a gas flow hole(35) on one upper side of the circumferential surface. The return spring is inserted into the spring chamber of the housing and supports the piston elastically. The bottom of the piston rod is connected to the central part of the piston inside the housing, and the top corresponds to a trim steel of a top mold. The elastic kicker is formed in a bag shape in order to correspond to the lower part of scrap. The elastic kicker is mounted on the one upper side of the cylinder unit housing and connected to the inside of the housing through the gas flow hole to be expanded and contracted by gas flow.

Description

Scrap take out device for press {SCRAP EJECTING APPARATUS OF PRESS MOLD}

The present invention relates to a scrap takeout device for a press, and more particularly, by forcibly extracting scrap generated during trim molding by using an elastic kicker that expands and contracts using an internal gas flow of a cylinder interlocked with an upper die. The present invention relates to a scrap takeout device for presses that prevent scraps from being caught in the press.

In general, 2 to 30,000 parts are assembled through several assembly processes until the automobile manufacturer produces the automobile.

In particular, the car body is the first step in the automobile manufacturing process. After producing product panels through various kinds of press devices, the car body is moved to a car body factory, where each part of the product panels is assembled to form a white body (BIW) body. .

In order to form the material panel into the product panel as described above, after pressing the molding process in a certain form through various press equipments, cutting, pressing in the pressing process such as trimming, piercing and flanging, Hole processing, bending, etc. will be processed.

In this press process, as shown in Figure 1, in the production of the body panel, during the trim molding operation by cutting the material panel using a trim press device to produce the body panel and at the same time take out the scrap generated at this time In order to facilitate the scrap, the lower mold 101 and the upper mold 103 are provided with the lower mold and the upper mold scrap cutters 105 and 107, respectively, and are cut out into several pieces.

However, according to the conventional trim press apparatus as described above, as shown in FIG. 2, the scrap 100 cut between the scrap cutters 105 facing each other on the lower mold 101 occurs. When a plurality of cut scraps 100 are pinched, the blades of the scrap cutters 105 and 107 may be broken, or the lower mold 101 or the upper mold 103 may be damaged.

As such, in order to prevent the scrap 100 from being caught between the lower mold scrap cutter 105, a spring plunger (not shown) is conventionally installed on one side of the upper mold 103 to lower the end of the scrap by the compression force of the spring. While pressing in the direction induces the extraction of scrap, this also has a problem that the output is insufficient and the effectiveness is low because it is difficult to select the optimum position on the installation.

Therefore, the present invention has been invented to solve the problems of the prior art as described above, an object of the present invention is to provide an elastic kicker that expands and contracts using an inner gas flow of a cylinder unit interlocking with an upper mold between a scrap cutter on a lower mold. The present invention provides a press scrap take-out apparatus for forcibly removing scraps generated during trim molding of a material panel by a trim press device to the outside of the scrap cutter by the elastic kicker.

In order to realize the object as described above, the scrap take-out apparatus for presses according to the present invention includes a trim press including a lower mold and an upper mold scrap cutter mounted on the lower mold and the upper mold, respectively. In the scrap take-out device for presses to take out the scrap cut back by each scrap cutter of the device in conjunction with the mold operation to the outside from the lower die scrap cutter,

A housing is mounted upwardly through a mounting holder on an outer side of the lower die between the lower die scrap cutters so that the tip of the piston rod corresponds to the upper die trim steel on the upper die, and a restoring spring is configured to support the piston upward. unit; Is formed in the shape of a bag of elastic material to correspond to the lower surface of the scrap is mounted on the upper side of the housing of the cylinder unit, is connected to the inside of the housing through the gas flow port is elastic to expand or contract by the inflow and outflow of gas in the housing It is characterized by consisting of a kicker.

The cylinder unit is the outer peripheral surface side is fastened to one side of the lower portion of the lower mold by the mounting holder, the interior is partitioned into a gas chamber and the spring chamber by a piston, the outer peripheral surface one side of the housing in which the gas flow port is formed; A restoring spring formed of a coil spring and inserted into a spring chamber inside the housing to support the piston with elastic force; A lower end is connected to the center of the piston in the interior of the housing, the upper end is a piston rod installed through the housing from the outside to correspond to the upper trim steel; characterized in that consisting of.

Here, the filling nipple for filling the gas is integrally formed on the other upper side of the outer peripheral surface of the housing.

A guide plate for limiting the expansion direction of the elastic kicker is integrally mounted on one side of an upper surface of the housing on which the elastic kicker is mounted.

The guide plate is characterized in that formed in a conical circular plate.

As described above, according to the present invention, the scrap take-out apparatus for presses includes an elastic kicker that expands and contracts between scrap cutters by using an internal gas flow of a cylinder linked to an upper mold at a lower mold side of a trim press apparatus. After the trim molding, the generated scrap is forcibly taken out by the expansion force of the elastic kicker to prevent the scrap from being caught between the scrap cutters, thereby preventing the blade cutter from being broken and the mold from being broken. have.

Hereinafter, with reference to the accompanying drawings, the preferred configuration and operation of the present invention in more detail, as follows.

3 is a side cross-sectional view of a trim press to which a scrap takeout device is applied according to an embodiment of the present invention, and FIG. 4 is an enlarged cross-sectional view of a scrap takeout device for press according to an embodiment of the present invention.

First, referring to the configuration of a trim press device to which the scrap scraping device 10 is applied according to an embodiment of the present invention, a lower mold 1 for forming a lower shape of a product panel is disposed at the lower portion, and the lower mold ( In the upper part of 1), the upper die 3 is mounted on a slider (not shown) that operates up and down.

A lower portion of the upper die 3 is mounted with a cushion pad 7 between the upper die 3 and a cushion spring 5 to regulate the panel 20 together with the lower die 1.

The lower mold 1 is provided with a lower mold trim steel 9 along its outer side, and an upper mold trim steel 11 is installed below the upper mold 3 in correspondence with the lower mold trim steel 9 to provide the slider. In accordance with the lowering operation of the lower mold trim steel (9), the edge of the panel 20, which is regulated between the lower mold (1) and the cushion pad (7) is trimmed.

In addition, a lower mold scrap cutter 13 and an upper mold scrap cutter 15 are mounted on the lower mold 1 and the upper mold 3 to the outside of the lower mold trim steel 9 and the upper mold trim steel 11, respectively. The edge of the panel 20, which is regulated between the lower mold 1 and the cushion pad 7, is cut, and at the same time, the cut scrap 17 is divided into several pieces of scrap and cut.

In the trim press apparatus having such a configuration, the scrap 17 which is cut again by the scrap cutters 13 and 15 is taken out from between the lower mold scrap cutters 13 in cooperation with a mold operation. According to the scrap taking out device 10 is configured.

As shown in FIG. 4, the scrap ejection apparatus 10 includes the upper and lower scrap cutters 13 between the lower die scrap cutters 13 so that the tip of the piston rod 23 corresponds to the upper die trim steel 11 on the upper die 3. The cylinder unit 21 is provided on the outer side of the lower mold 1, the housing 27 is mounted upward through the mounting holder 25, and formed in the shape of a bag of elastic material so as to correspond to the lower surface of the scrap 17. The elastic kicker 31 is mounted on one side of the upper portion of the housing 27 of the cylinder unit 21.

That is, the specific configuration of the cylinder unit 21, the cylinder unit 21 is largely divided into the housing 27, the restoring spring 29 and the piston rod 23.

The housing 27 is formed in a cylindrical shape and one side of the outer circumferential surface thereof is fastened to one side of the outer side of the lower mold 1 by the mounting holder 25, and the inside thereof is connected to the gas chamber C1 and the spring chamber by the piston 33. It is divided into (C2), the gas flow port 35 is formed on the upper side of the outer peripheral surface of the housing 27.

Here, the gas flow port 35 connects the elastic kicker 31 and the gas chamber C1 of the housing 27 to serve as a passage for supplying or discharging the gas in the gas chamber C1 to the elastic kicker 31. .

In addition, it is preferable that the filling nipple 37 for filling gas is integrally formed at the other upper side of the outer circumferential surface of the housing 27.

In addition, the restoring spring 29 is formed as a coil spring and is inserted into the spring chamber C2 inside the housing 27, and the piston 33 inside the housing 27 upwards using an elastic force. Support.

In addition, the lower end of the piston rod 23 is integrally connected to the center of the piston 33 in the interior of the housing 27, and the upper end of the piston rod 23 penetrates the upper part of the housing 27 from the outside. 39 is provided to correspond to the upper trim steel 11.

On the other hand, the elastic kicker 31 is installed on the upper side of the housing 27 of the cylinder unit 21 is preferably made of a rubber material, the gas chamber (C1) of the housing 27 and the gas flow port ( 35 is connected through the elastic material that can be expanded or contracted by the inflow and outflow of the gas inside the housing 27 is applicable.

And the guide plate 41 for limiting the expansion direction of the elastic kicker 31 is integrally mounted on one side of the outer surface of the housing 27 on which the elastic kicker 31 is mounted.

Here, the guide plate 41 is preferably formed of a conical circular plate.

Therefore, the operation of the scrap take-out device for presses having the configuration as described above will be described step by step along with the operation of the trim press device through FIGS. 3, 5 and 6.

First, as shown in FIG. 3, the panel 20 is inserted between the lower mold 1 and the cushion pad 7.

At this time, the scrap taking-out device 10 is in a position where the piston rod 23 of the cylinder unit 21 is raised, supporting the lower portion of the panel 20 with the contact pads 39, and at the same time the elastic kicker. As shown in the dotted line in FIG. 4, the gas 31 is supplied with the gas inside the gas chamber C1 through the gas flow port 35 to maintain the expanded state.

In this state, as shown in Fig. 5, the upper die 3 is lowered by the upper slider (not shown) to proceed with the trim operation.

That is, the trimming operation generates the scrap 17 by cutting the edge portion of the panel 20 by the operation of the upper trim steel 11 and the lower trim steel 9, and at the same time, the cut scrap 17. Is divided into several pieces of scrap 17 by the upper scrap scraper 15 and the lower scrap scraper 13 which cooperate with the operation of the upper die 3.

At this time, the scrap ejection device 10 is pressed down by the upper trim steel 11 while the piston rod 23 of the cylinder unit 21 still supports the lower portion of the scrap 17 with the contact pad 39. At the same time, the elastic kicker 31 maintains the contracted state by returning the internal gas to the gas chamber C1 through the gas flow hole 35 as shown in the solid line of FIG. 4.

That is, the scrap take-out apparatus 10 at this time is the piston 33 is lowered by the upper-shaped trim steel 11 and the restoration spring 29 is compressed, the gas chamber ( C1) The elastic kicker 31 is in a contracted state by receiving the gas inside the elastic kicker 31 as much as the volume inside thereof.

In this state, as shown in FIG. 6, when the upper die 3 is subjected to the upward return operation, the trimmed panel 20 remains on the lower die 1.

At this time, the scrap taking-out device 10 is the piston rod 23 by the elastic force of the restoring spring 29 as the piston rod 23 instantaneously ascends up the inside of the scrap 17 in the upward direction of the scrap 17 At the same time, the elastic kicker 31 is expanded rapidly by receiving the gas inside the gas chamber C1 through the gas flow port 35 as shown in the dotted line of FIG. 4.

Accordingly, the elastic kicker 31 strikes the lower surface of the scrap in the wrong direction by using the force of instantaneous expansion, so that the scrap 17 is between the lower die scrap cutter 13. It is completely pulled out without being caught.

1 is a partial perspective view of a trim press device according to the prior art.

Figure 2 is a front view of Figure 1 for explaining the problems of the prior art.

3 is a side cross-sectional view of a trim press to which a scrap extraction apparatus is applied according to an embodiment of the present invention.

Figure 4 is an enlarged cross-sectional view of the scrap take-out device for press according to the embodiment of the present invention.

5 and 6 is a step-by-step operating state diagram of the scrap taking out device according to an embodiment of the present invention.

Claims (8)

The scrap that is cut back by each scrap cutter of the trim press device including the lower mold and the upper mold scrap cutter mounted on the lower mold and the upper mold, respectively, on the lower mold trim steel on the lower mold and the upper mold trim steel on the upper mold, is linked with the mold operation. In the scrap taking out device for press to take out from between the scrap cutter, A housing is mounted upwardly through a mounting holder on an outer side of the lower die between the lower die scrap cutters so that the tip of the piston rod corresponds to the upper die trim steel on the upper die, and a restoring spring is configured to support the piston upward. unit; Is formed in the shape of a bag of elastic material to correspond to the lower surface of the scrap is mounted on the upper side of the housing of the cylinder unit, is connected to the inside of the housing through the gas flow port is elastic to expand or contract by the inflow and outflow of gas in the housing Scrap take-out apparatus for presses comprising a kicker. The method of claim 1, The cylinder unit is A housing having one outer circumferential surface fastened to one outer side of the lower mold by a mounting holder, and having a gas compartment and a spring chamber partitioned therein by a piston, and having a gas flow hole formed on an upper circumferential surface; A restoring spring formed of a coil spring and inserted into a spring chamber inside the housing to support the piston with elastic force; The lower end is connected to the center of the piston in the interior of the housing, the upper end through the housing is provided with a contact pad from the outside, the piston rod corresponding to the upper trim steel; The method according to claim 1 or 2, On the other side of the outer peripheral surface of the housing Press scrap take-out device characterized in that the filling nipple for filling the gas is integrally configured. The method according to claim 1 or 2, On one side of the outer surface of the housing on which the elastic kicker is mounted The scrap take-out apparatus for pressing, characterized in that the guide plate for limiting the expansion direction of the elastic kicker is integrally mounted. The method of claim 4, wherein The guide plate is Scrap takeout device for presses, characterized in that formed in a conical circular plate. The scrap that is cut back by each scrap cutter of the trim press device including the lower mold and the upper mold scrap cutter mounted on the lower mold and the upper mold, respectively, on the lower mold trim steel on the lower mold and the upper mold trim steel on the upper mold, is linked with the mold operation. In the scrap taking out device for press to take out from between the scrap cutter, One side of the outer circumferential surface is mounted upwardly through a mounting holder on one side of the outer side of the lower mold between the lower mold scrap cutters so that an upper portion corresponds to the upper mold trim steel on the upper die, and therein, the piston is partitioned into a gas chamber and a spring chamber by an upper piston The housing has a gas flow port is formed; A restoring spring formed of a coil spring and inserted into a spring chamber inside the housing to support the piston with elastic force; A piston rod having a lower end connected to a center of the piston inside the housing and having an upper end penetrating through the housing and having a contact pad installed at an outside thereof corresponding to the upper trim steel; It is formed in the shape of a bag of the elastic material to correspond to the lower surface of the scrap is mounted on the upper side of the housing, connected to the inside of the housing through the gas flow port to expand or contract by the inflow and outflow of gas in the housing ; And a guide plate integrally mounted on an upper side of an outer surface of the housing on which the elastic kicker is mounted to limit the expansion direction of the elastic kicker. The method of claim 6, On the other side of the outer peripheral surface of the housing Press scrap take-out device characterized in that the filling nipple for filling the gas into the gas chamber is integrally configured. The method of claim 6, The guide plate is Scrap takeout device for presses, characterized in that formed in a conical circular plate.

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