CN108927466B

CN108927466B - Empty plate separating device

Info

Publication number: CN108927466B
Application number: CN201810479698.8A
Authority: CN
Inventors: 崔永林; 金正镐; 全亨俊
Original assignee: Myungjin Tech Co ltd; Saehan Ind Co ltd
Current assignee: Myungjin Tech Co ltd; Saehan Ind Co ltd
Priority date: 2017-05-24
Filing date: 2018-05-18
Publication date: 2020-06-09
Anticipated expiration: 2038-05-18
Also published as: CN108927466A; KR101919548B1

Abstract

The blank plate separating device according to the present invention comprises: a molding unit provided at a front end of the board holder in which a plurality of blank boards are stacked, and molding a material of the blank boards so that the blank boards are separated one by one at the board holder; and a driving unit providing a driving force to the molding unit.

Description

Empty plate separating device

Technical Field

The invention relates to a device for separating empty plates, in particular to a device for separating empty plates, which can separate the empty plates one by one when a plate bracket lifts the empty plates so as to respectively lift the empty plates.

Background

The plate for a vehicle is generally manufactured by a press molding process.

The apparatus used in such press forming process is provided with a unstacking and feeding device so as to supply an empty plate to the press device.

Specifically, the unstacking feeding device lifts empty plates one by one from a plurality of empty plates stacked in the plate holder and supplies to the press device to mold a product, but as shown in fig. 1, the case where two empty plates 2 are lifted by the unstacking feeding device FD frequently occurs. This is because the surface tension is increased by applying the anticorrosive rust preventive oil to the material of the blank sheet 2, so that the two blank sheets 2 are kept in a mutually adsorbed state.

Therefore, since the two blank plates are supplied to the punching device, the punching device punches the two blank plates 2, thereby producing inferior products, and the punching device also suffers damage or malfunction.

In order to prevent such a problem, the plate holder 3 shown in fig. 2 is provided with a magnet 4 as a separating means of the blank plate 2 in the prior art.

The magnet 4 is configured to stand on the side of the plate holder 3, and when the unstacking feeding device FD lifts the upper blank plate 2, the lower blank plate 2 is lifted with the upper blank plate 2, but cannot be lifted due to the strong magnetic attraction of the magnet 4. Thus, the blank plates 2 can be transported one by one to the punching device.

However, the conventional blank plate separation device such as the magnet 4 is limited to the blank plate 2 which can be used only for the magnetic steel plate material, and if the blank plate 2 is formed of a non-ferrous metal material or a carbon fiber composite material which is a non-magnetic material, there is a limitation that the blank plate 2 cannot be separated from each other by a magnetic force and thus cannot be used.

Patent document 1: korean granted patent publication No. 10-0764488

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a blank plate separating device capable of separating and lifting blank plates one by one when a plate holder lifts the blank plates even when the blank plates are made of a non-magnetic material.

In order to achieve the above object, an empty plate separating apparatus according to an embodiment of the present invention includes: a molding unit provided at a front end of the board holder in which a plurality of blank boards are stacked, and molding a material of the blank boards so that the blank boards are separated one by one at the board holder; and a driving unit providing a driving force to the molding unit.

Here, the molding unit as an embodiment may be provided with: an air cavity configured at the front end of the plate bracket; and a pressing member installed on the air cavity and pressing the material to form a bump on the material, so that the blank plate is provided with the bump, and the driving unit may be provided with a gas supply line connected to the air cavity and press the pressing member toward the material side by gas pressure.

In this case, the driving unit may further include an elastic member disposed in the air chamber and elastically pressing the pressing member toward the opposite side of the material to return the pressing member moved to the material side to the original position.

As an embodiment, the air chamber may be provided at one of an upper die member and a lower die member of a blanking die that makes the material into the blank plate at a front end of the plate holder, and a groove portion may be formed on a portion of the other of the upper die member and the lower die member of the blanking die that corresponds to the punching member.

The pressing member may be formed in a plurality of pieces so that the raised portions are formed on one side portion and the other side portion of the material, and the pressing members having different positions may be alternately operated on the blank plates sequentially formed in the punching die so as to block the raised portions provided on the blank plates stacked on the plate holder from overlapping with each other.

In this case, the raised portion may be provided in a removed portion of the blank plate, which is a portion removed after the blank plate is cut or punched out of the material.

Further, according to another aspect of the present invention, there may be provided a blank separating device including: a molding unit provided at a front end of the board bracket on which a plurality of blank boards are stacked, and molding a material of the blank boards to form edge protrusions or edge grooves so that the blank boards are separated one by one at the board bracket; a driving unit providing a driving force to the molding unit; and a blocking unit provided on the panel bracket and configured to be selectively positioned on a rising path of the edge protrusion or the edge groove when the empty panel on the panel bracket rises.

Here, the molding unit may be provided with: an air cavity configured at the front end of the plate bracket; and a cutting member installed on the air cavity and cutting the material to form the edge protrusion or the edge groove on the material such that the blank plate is provided with the edge protrusion or the edge groove, and the driving unit may be provided with a gas supply line, connected to the air cavity, and move the cutting member toward the material side using a gas pressure to perform a press cutting operation.

At this time, the air cavity may be provided at one of an upper die member and a lower die member of a blanking die for making the material into the blank plate at a front end of the plate holder, and the cutting member may be configured in plurality so as to form the edge protrusion or the edge groove at one side portion and the other side portion of the material, respectively.

Specifically, the cutting means may be operated so as to form edge protrusions or edge grooves at different positions on the material of each of the blank plates sequentially formed in the blanking die, so as to be able to block the edge protrusions or edge grooves respectively provided at the plurality of blank plates stacked on the plate holder from overlapping with each other.

More specifically, the air cavity is provided with a first cavity and a second cavity at a side portion of the blanking die, and the cutting member is provided with: a first cutter installed on the first chamber, the first cutter formed at an end of the material side being shaped like Contraband' on a plane to have a first open portion at one side; and a second cutter installed in the second cavity, a second blade formed at an end of the material side being formed on a plane

The shape is as follows. And a die blade formed at an end of the material side of the blanking die is a non-sealing structure to form a die opening portion, a first blade of the first cutter is disposed opposite to the first opening portion and the die opening portion, a second blade of the second cutter is disposed at the die opening portion to form a disposition structure blocking the first opening portion of the first cutter, and when the first cutter of the cutting member on one side operates and the second cutter does not operate, the second cutter of the cutting member on the other side operates and the first cutter does not operate.

And, the blocking unit may be provided with: a cylinder member mounted on a support pillar standing on the plate holder; and a blocking member connected to the cylinder link of the cylinder member, and movable toward the edge projection or the edge groove by the cylinder member, so that an ascending path of the edge projection or the edge groove can be arranged.

In addition, the edge protrusion or the edge groove may be provided at a removed portion of the blank plate, which is a portion removed after the blank plate is cut or punched out of the material.

According to the blank plate separating apparatus of the present invention, since the forming unit for forming the material of the blank plate is configured before the material becomes the blank plate, when the blank plate is lifted up by the plate holder for carrying, the blank plates can be separated one by one, and particularly, there is an effect that not only the iron material used for the magnetic body but also the non-iron metal material or the carbon fiber composite material used for the non-magnetic body can be used.

Drawings

Fig. 1 is a diagram showing two blank plates raised in a plate holder.

Fig. 2 is a view showing that only one empty plate is lifted by a magnet of the empty plate separating apparatus according to the related art.

Fig. 3 is a view showing a blank plate manufacturing apparatus including a blank plate separating device according to an embodiment of the present invention, which shapes a material into a blank plate.

Fig. 4 is a view showing a blanking die provided with the blank separating apparatus of fig. 3.

Fig. 5 and 6 are a side view and a plan view sequentially showing a plurality of blank plates formed by the blanking die.

Fig. 7 is a view showing that a plurality of empty plates are stacked on the plate holder of fig. 3.

Fig. 8 is a view showing a blank plate manufacturing apparatus including a blank plate separating device according to another embodiment of the present invention, which shapes a material into a blank plate.

Fig. 9 is a view showing a blanking die provided with a molding unit and a driving unit in the blank sheet separating apparatus of fig. 8.

Fig. 10a is a bottom view showing only the die blades of the blanking die of fig. 9, the first blade of the first cutter and the second blade of the second cutter in the forming unit; fig. 10b is a view showing the die opening portion of the die blade and the first opening portion of the first blade of fig. 10 a.

Fig. 11 is a plan view sequentially showing a plurality of blank plates formed by the blanking die of fig. 8.

Fig. 12 to 14 are views showing that only one empty plate is raised in the plate holder of fig. 8.

Description of reference numerals:

DR: the unwinding machine 11: material

12: a blank plate U: raised part

D: a removing part B: edge projection

100: blanking die 100 a: die blade

100 b: mold opening portion 110: upper mold member

110a groove portion 120: lower mold member

200: molding units 210, 250: air cavity

220: the punch member 251: the first chamber

252: second chamber 260: cutting member

261: first cutter 261 a: first blade

261 b: first open portion 262: second tool

262 a: second blade 300: drive unit

310: gas supply line 320: elastic component

400: the blocking unit 410: cylinder component

420: blocking member PS: plate support

PL: support column GP: guide post

FD: destacking and feeding device

Detailed Description

The following detailed description is made with reference to the accompanying exemplary drawings. When reference numerals are given to components in each drawing, the same components are denoted by the same reference numerals in other drawings, but the same reference numerals are used as much as possible. In describing the present invention, if it is considered that detailed description of related known configurations or functions will make the gist of the present invention unclear, the detailed description will be omitted.

Fig. 3 is a view showing a blank plate manufacturing apparatus including a blank plate separating device according to an embodiment of the present invention, which shapes a material to be a blank plate. Fig. 4 is a view showing a blanking die provided with the blank separating apparatus of fig. 3.

Fig. 5 and 6 are a side view and a plan view sequentially showing a plurality of blank plates molded by a punching die, and fig. 7 is a view showing a plurality of blank plates stacked on the plate holder of fig. 3.

As shown in the drawings, the blank sheet separating apparatus according to an embodiment of the present invention includes a molding unit 200 and a driving unit 300.

Here, the molding unit 200 is provided at the front end of the board support PS on which a plurality of blank plates 12 are stacked, and is configured to mold the material 11 of the blank plates 12 so that the blank plates 12 are separated one by one at the board support PS.

And, the driving unit 300 provides a driving force to the molding unit 200.

For reference, the material 11 may be wound out from the unwinding machine DR to be continuously supplied to the molding unit 200.

Specifically, the molding unit 200 may be provided with an air cavity 210 and a punch member 220.

At this time, the air chamber 210 is disposed at the front end of the board support PS.

And, the punching member 220 is installed on the air cavity 210 for punching the material 11, thereby forming a swelling U on the material 11 so that the blank plate 12 is provided with the swelling U.

For reference, the raised portion U may be configured to prevent all of the plurality of blank plates 12 from being closely overlapped when they are stacked on each other, and may be configured to have a bent structure that does not damage the plurality of blank plates 12 when they are rubbed together when they are overlapped on each other. Also, the punching member 220 is not a punching means for forming the blank plate 12 to prepare a product shape, but a structure for forming the material 11 to prepare a shape of the blank plate 12.

Also, the driving unit 300 is provided with a gas supply line 310, and the gas supply line 310 is connected to the gas chamber 210, and performs a role of performing a punching operation of the punching member 220 toward the material 11 side by gas pressure.

Further, the driving unit 300 may further include an elastic member 320, and the elastic member 320 may be disposed in the air cavity 210 to elastically press the pressing member 220 toward the opposite side of the material 11 so that the pressing member 220 moved to the material 11 side returns to the original position.

For reference, regardless of the elastic member 320, the driving unit 300 may be configured to remove the pressure to the pressing member 220 through a gas pressure regulation (e.g., a control regulation such as a valve regulation) of the gas supply line 310 after the pressing operation of the pressing member 220.

The blank plate 12 is provided with the raised portion U by the molding unit 200 and the driving unit 300 as described above, that is, the blank plate 12 is molded by the molding unit 200 and the driving unit 300 so that the blank plate 12 has a structure having the raised portion U before being loaded on the plate holder PS, and therefore, even if a plurality of blank plates 12 loaded on the plate holder PS are stacked, the blank plates 12 are not closely overlapped with each other, and therefore, when the blank plates 12 are raised on the plate holder PS by the unstacking feeding device FD, the blank plates 12 can be raised one by one without being closely overlapped with each other.

In addition, the air cavity 210 may be provided on one of the upper die member 110 and the lower die member 120 of the blanking die 100 for making the material 11 into the blank plate 12 at the front end of the plate holder PS.

In this manner, the molding unit 200 adopts a structure mounted on the impact mold 100 located at the front end of the board mount PS, so that a separate part for forming the air cavity 210 is not required, and thus it is more effective in terms of arrangement structure, arrangement space, and manufacturing costs.

Further, with the above configuration, the punching die 100 moves together toward the material 11 side during the punching operation, and the sufficient punching operation can be performed even if the punching member 220 performs the short-distance punching operation, so that the raised portion U is formed in the material 11, and therefore, the raised portion U can be formed smoothly and easily.

In addition, a groove portion 110a may be formed in a portion of the other one of the upper die member 110 and the lower die member 120 of the punching die 100 corresponding to the pressing member 220.

Such a groove portion 110a accommodates the bulging portion U when the punching member 220 performs a punching operation on the material 11 to form the bulging portion U, thus forming a space in which the bulging portion U can be formed.

Also, the punching member 220 may be configured in a plurality so that the swelling portions U are formed at one side portion and the other side portion of the material 11, respectively.

As shown in fig. 7, the pressing members 220 at different positions may be alternately operated to the blank plates 12 sequentially formed in the punching die 100, so as to block the raised portions U provided in the plurality of blank plates 12 stacked on the plate holders PS from overlapping each other.

As an example, as shown in fig. 5 and 6, the punching members 220 may be configured in plural, and only two punching members 220 located on the front side of the material 11 operate for one blank plate 12, and only two punching members 220 located on the rear side of the material 11 operate for the next blank plate 12, thereby forming the bulging portions U at the front and rear portions of the material 11, respectively.

The raised portion U may be provided in a removed portion D of the blank plate 12 as shown in fig. 6, and the removed portion D may be a portion (indicated by a dotted line) which is not a product after the blank plate 12 is formed from the material 11 and is removed by cutting or punching.

The blank plate 12 is supplied to a press apparatus for product forming by the unstacking feeding apparatus FD and press-formed in the press apparatus corresponding to the product shape, and in this process, since the bulging portion U is formed on the removing portion D of the blank plate 12 which is removed after cutting or punching, the shape of the product is not affected at all.

According to the empty plate separating apparatus of the embodiment of the present invention configured as described above, when the plate rack PS lifts the empty plates 12 by the unstacking feeding device FD, the empty plates 12 can be lifted one by one, and particularly, when the material 11 of the empty plates 12 is a non-ferrous metal material that is a non-magnetic body, it can be effectively used.

Fig. 8 is a view showing a blank plate manufacturing apparatus including a blank plate separating device according to another embodiment of the present invention, which shapes a material to be a blank plate. Fig. 9 is a view showing a blanking die provided with a molding unit and a driving unit in the blank sheet separating apparatus of fig. 8.

Fig. 10a is a bottom view showing only the die blades of the blanking die of fig. 9, the first blade of the first cutter and the second blade of the second cutter in the forming unit; fig. 10b is a view showing the die opening portion of the die blade and the first opening portion of the first blade of fig. 10 a. Fig. 11 is a plan view sequentially showing a plurality of blank plates formed by the blanking die of fig. 8.

Fig. 12 to 14 are views showing only one empty plate being lifted in the plate holder of fig. 8.

Referring to the drawings, an empty plate separating apparatus according to another embodiment of the present invention includes a molding unit 200, a driving unit 300, and a blocking unit 400.

The driving unit 300 is configured to provide a driving force to the molding unit 200.

Specifically, the molding unit 200 may be provided with an air cavity 250 and a cutting member 260.

At this time, the air chamber 250 is disposed at the front end of the board support PS.

And, a cutting member 260 is installed on the air cavity 250 for cutting the material 11 to form an edge protrusion B or an edge groove (not shown) so that the blank plate 12 is provided with the edge protrusion B or the edge groove.

For reference, the edge protrusion B or the edge groove may be configured to be blocked by a blocking unit 400 described later when the blank plate 12 is lifted, or may be configured to allow the blocking unit 400 to pass therethrough, and a specific structural shape thereof is not limited in the present invention.

And, the driving unit 300 is provided with a gas supply line 310, the gas supply line 310 is connected to the gas chamber 210, and the pressing member 220 is pressed toward the material 11 side by the gas pressure.

Further, the driving unit 300 may further include an elastic member 320, and the elastic member 320 is disposed in the air chamber 250 and elastically presses the cutting member 260 toward the opposite side of the material 11 to return the cutting member 260 moved to the material 11 side to the original position.

For reference, the driving unit 300 may be configured to remove the pressure to the cutting member 260 through the gas pressure adjustment (e.g., a control adjustment such as a valve adjustment) of the gas supply line 310 after the cutting operation of the cutting member 260, regardless of the elastic member 320.

In addition, the air cavity 250 may be provided on one of the upper and lower die

members

110 and 120 of the blanking die 100 for making the blank plate 12 from the material 11 at the front end of the plate holder PS.

Accordingly, the molding unit 200 adopts a structure mounted on the impact mold 100 located at the front end of the board mount PS, so that a separate component for forming the air cavity 250 is not required, and thus it is more effective in terms of arrangement structure, arrangement space, and manufacturing costs.

Further, with the above configuration, when the punching die 100 performs the punching operation, the cutting member 260 is moved toward the material 11, and even if the cutting member 260 performs the punching operation for a short distance, a sufficient punching operation for forming the edge projection B or the edge groove in the material 11 can be performed, and therefore the edge projection B or the edge groove can be smoothly and easily formed.

For reference, a supporting portion may be formed on a portion of the other one of the upper die member 110 and the lower die member 120 of the blanking die 100 corresponding to the cutting member 260 to support the material 11, as a matter of course.

In addition, the cutting member 260 may be constructed in a plurality such that the edge protrusion B or the edge groove is formed at one side and the other side of the material 11, respectively.

Also, as shown in fig. 12, the cutting member 260 operates to differently form the position of the edge protrusion B or the edge groove to each material 11 of each blank plate 12 sequentially manufactured in the blanking die 100, thereby blocking the edge protrusions B or the edge grooves respectively provided at the plurality of blank plates 12 stacked in the plate holder PS from overlapping each other.

As such, the air cavity 250 and the cutting member 260 are specifically described with reference to fig. 9 and 10.

The air cavity 250 may have a first cavity 251 and a second cavity 252 at a side portion of the blanking die 100, and the cutting member 260 may have a first cutter 261 and a second cutter 262.

Here, the first cutter 261 is installed in the first cavity 251, and the first blade 261a formed at the end of the material 11 side is formed in an "Contraband" shape on a plane so as to have a first open portion 261b at one side.

In addition, the second cutter 262 is installed in the second chamber 252, and the second blade 262a formed at the end of the material 11 side is formed on the plane

The shape is as follows.

Further, in the punching die 100, the die blade 110a formed at the end portion on the material 11 side is a non-sealing structure, so that the die opening portion 100b shown in fig. 10b is formed, the first blade 261a of the first blade 261 is disposed opposite to the first opening portion 261b and the die opening portion 100b, and the second blade 262a of the second blade 262 may be disposed at the die opening portion 100b, so that an arrangement structure blocking the first opening portion 261b of the first blade 261 is formed.

Accordingly, when the first cutter 261 operates with the blanking die 100, the die blade 100a and the first blade 261a cut the material 11 to form the edge protrusion B on the material 11, and when the second cutter 262 operates with the blanking die 100, the die blade 100a and the second blade 262a cut the material 11 to form the material 11 without the edge protrusion B as with other edge portions cut by the die blade 100 a.

Further, although not shown in the drawings, when the first blade 261 is positioned at the side of the blanking die 100 to be placed inside, and when the first blade 261 is operated together with the blanking die 100, the die blade 100a and the first blade 261a cut the material 11, thereby forming an edge groove (not shown) on the material 11.

When the cutting member 260 of the above-described structure is operated, the first cutter 261 of the cutting member 260 of one side among the plurality of cutting members 260 is operated and the second cutter 262 is not operated, and the second cutter 262 of the cutting member 260 of the other side is operated and the first cutter 261 is not operated.

Here, the cutting member 260 should operate to differently form the positions of the edge protrusions B or the edge grooves to the material 11 of each blank plate 12 sequentially manufactured in the blanking die 100 so that the edge protrusions B or the edge grooves respectively provided at the plurality of blank plates 12 stacked on the plate holder PS do not overlap each other. For this, the first cutter 261 of the cutting member 260 of one side (one of the front and rear portions of the material 11 in the drawing) and the second cutter 262 of the cutting member 260 of the other side (the other of the front and rear portions of the material 11 in the drawing) are operated behind the material 11 of the blank 12, and the second cutter 262 of the cutting member 260 of one side and the first cutter 261 of the cutting member 260 of the other side are operated on the material 11 of the next blank 12.

As shown in fig. 8, 12 to 14, the blocking unit 400 may include a cylinder member 410 and a blocking member 420.

Here, the cylinder member 410 may be mounted to a support column PL standing on the plate holder PS.

The blocking member 420 is connected to the cylinder link of the cylinder member 410, and can be disposed on the rising path of the edge projection B or the edge groove by moving the cylinder member 410 to the edge projection B or the edge groove side.

For reference, a reference symbol GP of the present invention is a guide post GP for guiding the elevation of the empty plate 12 on the plate holder PS.

The blank plate 12 is provided with the edge protrusion B or the edge groove by the above-described molding unit 200 and the driving unit 300, that is, the material 11 of the blank plate 12 is molded by the molding unit 200 and the driving unit 300, so that the blank plate 12 obtains a structure provided with the edge protrusion B or the edge groove before being loaded on the plate holder PS, and when the blank plate 12 is raised by the unstacking feeding device FD after being mounted on the plate holder PS, the edge protrusion B is blocked by the blocking unit 400, or the blank plate 12 passing through the overlapped lower edges of the edge groove is blocked, so that the blank plates 12 can be raised one by one.

The edge projection B or the edge groove is provided in a removing portion D of the blank 12, and the removing portion D is a portion that is removed by cutting or punching a portion (indicated by a dotted line) that is not to be a product after the blank 12 is formed from the material 11 shown in fig. 11.

The blank 12 is supplied to a press apparatus for product forming by the unstacking feeding device FD and press-formed in the press apparatus corresponding to the shape of the product, and in this process, since the edge protrusion B or the edge groove is formed at the removing part D of the blank 12 removed after cutting or punching, the shape of the product is not affected at all.

According to the empty plate separating apparatus of another embodiment of the present invention having the above-described structure, the PS can separate and lift the empty plates 12 one by one when the empty plates 12 are lifted by the plate holder by the unstacking feeding device 12, and particularly, can be effectively used when the material 11 of the empty plates 12 is a non-ferrous metal material and a carbon fiber composite material which are non-magnetic bodies. That is, when the material 11 of the blank plate 12 is the carbon fiber composite material, it is not affected by the magnetic force, and the shape structure such as the bulge portion cannot be manufactured without a separate thermoforming method, so that the structure of separating the blank plate 12 can be formed by a cutting molding method.

As a result, the blank plate separating apparatus according to the present invention is configured with the molding unit 200 to mold the material 11 of the blank plate 12 before the material 11 becomes the blank plate 12, and when the blank plate 12 is lifted up by the plate holder PS for transportation, the blank plates 12 can be separated one by one, and in particular, can be effectively used not only for an iron material of a magnetic body but also for a non-iron metal material of a non-magnetic body, a carbon fiber composite material.

As described above, although the present invention has been described with respect to the limited embodiments and the accompanying drawings, the present invention is not limited thereto, and various modifications and variations can be made by those skilled in the art without departing from the technical idea of the present invention and the equivalent scope of the claims.

Claims

1. An empty plate separation device comprising:

a molding unit provided at a front end of the board bracket on which a plurality of blank boards are stacked, and molding a material of the blank boards to form edge protrusions or edge grooves so that the blank boards are separated one by one at the board bracket; a driving unit providing a driving force to the molding unit; and a blocking unit provided on the panel bracket and configured to be selectively positioned on a rising path of the edge protrusion or the edge groove when the empty panel on the panel bracket rises;

the molding unit is equipped with: an air cavity configured at the front end of the plate bracket; and a cutting member installed on the air cavity and cutting the material to form the edge protrusion or the edge groove on the material so that the blank plate is provided with the edge protrusion or the edge groove, the driving unit being provided with: a gas supply line connected to the gas chamber and moving the cutting member toward the material side by gas pressure to perform a press cutting operation;

the air cavity is arranged at one of an upper die member and a lower die member of a blanking die for making the material into the blank plate at the front end of the plate bracket, and the cutting members are formed in plurality so as to form the edge protrusion or the edge groove at one side portion and the other side portion of the material respectively;

the air cavity is provided with a first cavity and a second cavity at the side part of the blanking die, and the cutting component is provided with: a first cutter installed on the first chamber, the first cutter formed at an end of the material side being shaped like 'Contraband' on a plane and having a first open portion at one side; and a second cutter installed in the second cavity, a second blade formed at an end of the material side being in an "|" shape on a plane, a die blade formed at an end of the material side of the blanking die being in a non-sealing structure to form a die opening portion, the first blade of the first cutter being disposed opposite to the first opening portion and the die opening portion, the second blade of the second cutter being disposed at the die opening portion to form an arrangement structure blocking the first opening portion of the first cutter, the second cutter of the cutting member of the other side being operated and the first cutter not being operated when the first cutter of the cutting member of one side is operated and the second cutter is not operated.

2. Blank separation device according to claim 1,

the cutting means operates to form the edge protrusion or the edge groove at different positions on the material of each of the blank plates sequentially manufactured in the blanking die so as to be able to block the edge protrusion or the edge groove provided respectively in the plurality of blank plates stacked on the plate holder from overlapping with each other.

3. Blank separation device according to claim 1,

the blocking unit is provided with:

a cylinder member mounted on a support pillar standing on the plate holder; and

and a blocking member connected to the cylinder link of the cylinder member, and configured to be disposed on an ascending path of the edge protrusion or the edge groove by moving toward the edge protrusion or the edge groove by the cylinder member.

4. Blank separation device according to claim 1,

the edge protrusion or the edge groove is provided in a removing portion of the blank plate, and the removing portion is a portion that is removed after the blank plate is made of the material and is cut.