KR20140055385A

KR20140055385A - Device for spoon or fork

Info

Publication number: KR20140055385A
Application number: KR1020120122104A
Authority: KR
Inventors: 허남훈; 김은숙
Original assignee: 허남훈; 김은숙
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2014-05-09

Abstract

The present invention relates to a spoon or fork manufacturing apparatus, and more particularly, to a spoon manufacturing apparatus comprising a bowl for containing food and a neck formed integrally with the bowl, A first outer punch for punching the plate so that outer shapes of half of the bobbin portion and the neck portion of the neck portion are formed in opposite directions on both sides of the punching hole and a pair of outer punches spaced apart from the first outer punch by a predetermined distance, A second outer punch for punching the spoon material plate so that the other half of the outer shape of the neck portion is formed, and a second outer punch for pivoting the first outer punch and the second outer punch so as to bend the bowl portion formed by the first outer punch and the second outer punch, The bending punch and the second bending punch, and the ends of the neck portion where the bowl portion is bent by the first bending punch and the second bending punch, respectively An upper mold having a first cutting punch and a second cutting punch which are cut from a spoon material plate; A first and a second discharge hole are formed at positions corresponding to the first and second outer punches of the upper mold, and are recessed downward at positions corresponding to the first and second bending punches First and second cutting punch insertion holes are formed at positions corresponding to the first and second cutting punches, and the first and second cutting punch insertion holes are formed at positions corresponding to the first and second cutting punches, And a lower mold having first and second discharge holes through which the neck and the neck are respectively discharged, thereby improving the productivity and reducing waste of the material.

Description

Device for spoon or fork < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spoon or fork manufacturing apparatus, and more particularly, to a spoon or fork manufacturing apparatus capable of improving productivity by automating a manufacturing process and reducing waste of materials.

In general, a spoon is a tool made to be able to put food into the mouth by eating at the time of eating. The structure includes a bowl portion formed to be depressed downward to contain food and a neck portion formed integrally with the bowl portion Neck portion and a knob portion connected to the neck portion.

In addition, the fork is widely used in western countries, and is often used for taking food taken by knives or for wrapping a kind of face such as spaghetti. The fork is a fork knife having a plurality of fork- A knock portion formed integrally with the fork blade portion, and a knob portion connected to the neck portion.

Such spoon or fork is usually manufactured using wood, synthetic resin, metal material or the like. Especially, spoon or fork of metal is mainly used in home or restaurant.

In a conventional method for manufacturing such a metal spoon or fork, a steel plate with a predetermined thickness is punched out and then subjected to a subsequent process such as polishing. Since the spoon or fork produced by punching the press is one by one, There is a problem that the waste of the iron plate for manufacturing the fork or the spoon as well as the waste is considerable, resulting in a large raw material value.

The present invention has been conceived to solve the problems of the prior art described above, and it is an object of the present invention to provide a spoon or fork which is capable of simultaneously producing two spoons or forks at a time by punching an upper mold, And a spoon or a fork can be used to manufacture a spoon or a fork, thereby reducing the waste of the material.

In order to solve the above-mentioned problems, the spoon manufacturing apparatus according to the present invention is a device for manufacturing a spoon including a bowl portion for containing food and a neck portion formed integrally with the bowl portion, A first outer punch which is formed by punching the punching holes so that the outer shape half of the bevel portion and the neck portion are formed in the opposite directions on both sides of the punching hole and a first outer punch which is spaced apart from the first outer punch by a predetermined distance, A second outer punch for punching the spoon material plate so as to form a remaining half of the outer shape of the first outer punch and the second outer punch, and a bending part formed by the first outer punch and the second outer punch, A second bending punch, and an end of the neck portion where the bowl portion is bent by the first bending punch and the second bending punch, From a cutting punch provided with a first and a second cutting punches for cutting the upper mold and; A first and a second discharge hole are formed at positions corresponding to the first and second outer punches of the upper mold, and are recessed downward at positions corresponding to the first and second bending punches First and second cutting punch insertion holes are formed at positions corresponding to the first and second cutting punches, and the first and second cutting punch insertion holes are formed at positions corresponding to the first and second cutting punches, And first and second discharge holes through which the neck portion is discharged, respectively.

Here, an intermediate mold is further provided between the upper mold and the lower mold, The first and second outer punch holes are formed in the intermediate mold, and the first and second outer punch holes are formed in the intermediate mold. The first and second bending punches pass through the first and second bending punches, respectively. A through hole is formed, and first and second cut punch through holes through which the first and second cut punches are respectively passed are formed.

The lower mold is provided with a plurality of supporters on the left and right along the entry direction of the spoon material plate, an insertion groove is formed on the outer side surface of the supporter, and the left and right ends of the spoon material plate are disposed on the left and right. Respectively.

The upper mold has a material punching rod for passing through the intermediate mold to form a through hole in a spoon material plate on both sides of an inlet portion into which the spoon material plate enters, And the fixing pins are inserted through the intermediate mold so that the fixing pins are inserted into the through holes when the upper mold is punched.

Further, the upper mold has chip cutting punches on both sides of the end, the intermediate mold has a chip cutting punch insertion hole into which the chip cutting punch is inserted, and at the same time, when the upper mold is punching, A chip cutting punch inlet hole into which the cutting punch is inserted is formed, and both ends of the spoon material plate passed through the first and second cutting punches are cut by punching.

Further, a support box is further provided on the lower side of the lower mold, The support includes a bottom plate; A wall vertically installed on an upper surface of the bottom plate; And an upper plate installed at an upper end of the wall and having first and second communication holes and first and second guide holes communicating with the first and second discharge holes and the first and second discharge holes of the lower mold.

The present invention also relates to a fork manufacturing apparatus including a fork blade portion formed with a plurality of fork blades for taking food and a neck portion formed integrally with the fork blade portion, A plurality of fork punches for punching the portions between the fork blades in the fork material plate and a plurality of fork punches for punching the portions between the fork blades in the fork blades, A second outer punch for punching the material plate to form a fork blade portion excluding the end of the fork blade portion and an end portion of the neck portion and a remaining outer shape half of the neck portion; and a second outer punch for separating the fork blade portion from the fork material plate by cutting the end of the fork blade portion A cutting punch for cutting the fork blade part from the fork material plate; It generated a bending punch, and a punch is provided with a separate upper die to cut the additional day fork by the bending punch and end of the bent neck portion; A first and a second discharge hole are formed at positions corresponding to the first and second outer punches of the upper mold, and a fork blade punch hole is formed at a position corresponding to the fork blade punch A cutting punch hole is formed at a position corresponding to the cutting punch, a bending portion is formed concave downward at a position corresponding to the bending punch, a separation punch hole is formed at a position corresponding to the separation punch, And a lower mold having a fork part separated from the fork material plate by a punch and a discharge hole for discharging the neck part.

Here, an intermediate mold is further provided between the upper mold and the lower mold, A first and a second outer punch passing holes through which the first and second outer punches of the upper mold are respectively passed are formed in the intermediate mold, a fork blade punch through hole through which the fork blade punch passes is formed, A cutting punch through hole through which the bending punch passes is formed, and a separate punch passing hole through which the separating punch is passed is formed.

The lower metal mold is provided with a plurality of supporters on the left and right along the entry direction of the fork material plate, an insertion groove is formed on the outer side surface of the supporter, and the left and right ends of the supporter Respectively.

The upper mold is provided with a material punching rod penetrating through the intermediate mold to form a through hole in the fork material plate at the center of the entrance portion into which the fork material plate enters, A fixing pin is provided to penetrate the intermediate mold, and the fixing pin is inserted into the through hole when the upper mold is punched.

Further, the upper mold has chip cutting punches on both sides of the end, the intermediate mold has a chip cutting punch insertion hole into which the chip cutting punch is inserted, and at the same time, when the upper mold is punching, A chip cutting punch inlet hole into which the cutting punch is inserted is formed, and both ends of the fork material plate passed through the separating punch are cut by punching.

In addition, a support pin inserted between the fork blades is formed in the bending punch of the upper mold, and a bending portion of the lower mold is formed with a support pin hole into which the support pin is inserted.

The spoon or fork manufacturing apparatus according to the present invention configured as described above is formed by punching the first outer punch and the second outer punch provided on the upper mold so that the spoon or the fork is facing one to the other, Each time the workpiece passes through the mold, punching of the upper mold produces two spoons or forks, which improves the productivity, thereby lowering the manufacturing cost of the spoon or fork.

Since the spoon is formed one by one so as to face the opposite sides of the first outer punch and the second outer punch, and the fork is formed one by one so as to face the opposite sides of the first outer punch and the second outer punch, Almost all parts except for both ends of plate or fork material plate can be used to manufacture spoon or fork, which has the advantage of reducing waste of material.

1 is an exploded perspective view of a spoon manufacturing apparatus according to the present invention;
2 is a sectional view of a spoon manufacturing apparatus according to the present invention.
FIGS. 3A through 3J are views showing a spoon produced using the spoon manufacturing apparatus according to the present invention. FIG.
4 is an exploded perspective view of a fork manufacturing apparatus according to the present invention.
5 is a sectional view of a fork production apparatus according to the present invention.
6A to 6N are views showing a state in which a fork is produced by using the apparatus for manufacturing a fork according to the present invention.
7 is a view showing a fork produced by the fork manufacturing apparatus according to the present invention.

Hereinafter, an embodiment of a spoon manufacturing apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 3J of the accompanying drawings.

FIG. 1 is an exploded perspective view of a spoon manufacturing apparatus according to the present invention, FIG. 2 is a sectional view of the spoon manufacturing apparatus according to the present invention, FIGS. 3a to 3j show a spoon manufacturing apparatus using the spoon manufacturing apparatus according to the present invention FIG.

A spoon manufacturing apparatus according to the present invention is an apparatus for manufacturing a spoon by punching or cutting a spoon material plate M made of a steel material. The apparatus includes an upper mold 100, an intermediate mold 100 disposed below the upper mold 100, A lower mold 300 disposed on the lower side of the intermediate mold 200 and a support box 400 disposed on the lower side of the lower mold 300. Here, the spoon material plate M enters between the intermediate mold 200 and the lower mold 300, and a punching operation or a cutting operation is performed by the upper mold 100 to produce a spoon.

The upper mold 100 has three steel panels in close contact with each other and includes a first outer punch 110, a second outer punch 120, a first bending punch 130, A bending punch 140, a first cutting punch 150 and a second cutting punch 160 are provided.

The first outer punch 110 punches a spoon material plate M entering between the intermediate mold 200 and the lower mold 300 to form a half of the outer shape of the spoon. More specifically, the spoon includes a bowl portion S1 that is formed to be recessed to receive food, a neck portion S2 that is integrally formed with the bowl portion S1, The punching hole is formed by punching the first outer punch 110 when the first outer punch 110 is punched. The punching hole is formed by punching the first outer punch 110, The outer shape half of the neck portion S1 and the neck portion S2 are formed in opposite directions on both sides, respectively. That is, the outer shape half of the bowl portion S1 and the neck portion S2 is formed on the front side of the punching hole formed by the punching of the first outer punch 110, and the bowl portion S1 and the neck portion Half of the outer shape of the second lens S2 is formed. At this time, if the bowl portion S1 is looking to the left side in front of the punching hole and the neck portion S2 is looking to the right side, the bowl portion S1 is looking to the right side behind the punching hole and the neck portion S2 I look to the left. The reason why the bowl portion S1 and the neck portion S2 are viewed in opposite directions on both sides of the punching hole is to minimize the loss of the spoon material plate M. [

The second outer shape punch 120 is spaced apart from the first outer shape punch 110 by a predetermined distance and punches a spoon material plate M punched by the first outer shape punch 110. Half of the outer shape of the bowl S1 and the neck S2 is formed by the first outer punch 110 and the other half is formed by the second outer punch 120. [ That is, the second outer punch 120 forms the outer shape half of the remaining portion S1 and the neck S2 not formed by the first outer punch 110. At this time, the end of the neck portion S2 is not cut by the second outer shape punch 120 but remains attached to the spoon material plate M as it is.

The first bending punch 130 is for forming the bobbin S1 to be convex downward so as to contain food. When the spoon material plate M is punched by the first outer punch 110 and the second outer punch 120, two flat portions of the bowl S1 and two neck portions S2 are formed in opposite directions. Among the two bobbin portions S1 and S2, the first bending punch 130 is formed so that the rear bore S1 is downwardly depressed. Accordingly, the first bending punch 130 is convex downward.

Like the first bending punch 130, the second bending punch 140 convexly downwardly forms the bore portion S1 so as to contain food. The second bending punch 130 has a predetermined distance from the first bending punch 130, Respectively. The first bending punch 130 is formed with a depressed lower portion S1 on the back of the spoon material plate M and the second bending punch 140 is formed on the front side of the spoon material plate M, The bottom portion S1 is formed to be depressed downward. Accordingly, the second bending punch 140 is formed to be convex downward similarly to the first bending punch 130.

The first cutting punch 150 is a punching blade that cuts the end of the neck S2 where the bobbin S1 is bent by the first bending punch 130 from the spoon material plate M. [ In detail, the first bending punch 130 bends the bowl S1 located behind the spoon blank M, and at this time, the neck portion S2 formed integrally with the bowl S1 ) Is attached to the spoon material plate (M). The first cutting punch 150 separates the end of the neck portion S2 formed integrally with the bobbin portion S1 bent by the first bending punch 130 from the spoon material plate M. [

The second cutting punch 160 is spaced apart from the first cutting punch 150 by a predetermined distance. The second cutting punch 160 may be disposed at a position spaced apart from the first cutting punch 150 by the second bending punch 140, And cutting the end from the spoon material plate (M). In detail, the second bending punch 140 bends the bowl portion S1 in front of the spoon material plate M, and at this time, the neck portion S2 formed integrally with the bowl portion S1 ) Is attached to the spoon material plate (M). The second cutting punch 160 separates the end of the neck portion S2 formed integrally with the bobbin portion S1 bent by the second bending punch 140 from the spoon material plate M. [

The upper mold 100 is provided with a material plate punching rod 170, a plurality of fixing pins 180, and two chip cutting punches 190.

The material plate punching rods 170 are punching blades in the form of thin rods passing through the intermediate mold 200 and are formed on both sides of an inlet portion into which the spoon material plate M enters. The material sheet punching rod 170 is punched out of the upper mold 100 and the through holes M1 are formed on both sides of the inlet portion of the spoon material plate M entering between the intermediate mold 200 and the lower mold 300. [ .

When the upper mold 100 punches the spoon material plate M, the fixing pin 180 passes through the intermediate mold 200 and has an end fixed to the through hole M1. (180) is inserted. More specifically, when the spoon material plate M enters the space between the intermediate mold 200 and the lower mold 300 by a predetermined distance, the upper mold 100 punches downward to form a material plate punching rod The upper mold 100 is punched downward when the spoon material plate M enters the spoon material plate M in a further forward manner after the through hole M1 is formed in the spoon material plate M, The fixing pin 180 provided on the side of the plate punching rod 170 is inserted into the through hole M1 formed in the spoon material plate M. [ When the first outer punch 110 or the second outer punch 120 or the like punches the spoon material plate M, the fixing pin 180 is first inserted into the through hole M1 immediately before or immediately before punching Thereby preventing the spoon material plate (M) from moving due to the punching pressure.

The chip cutting punches 190 are provided on both sides of the ends of the upper mold 100 and are disposed at both ends of the spoon material plate M passing through the first cutting punch 150 and the second cutting punch 160 Is cut out by punching. Since the chip cutting punch 190 penetrates the intermediate mold 200 to cut the spoon blank M, the intermediate mold 200 is provided with a chip cutting punch insertion hole And a chip cutting punch inlet hole 360 into which the chip cutting punch 190 enters when the upper mold 100 is punched is formed in the lower mold 300. [ More specifically, the spoon material plate M is sequentially punched by the first and second outer punches 110 and 120, the first and second bending punches 130 and 140, and the first and second cutting punches 150 and 160 A part is left in the form of a chip at both ends when it is discharged to the outside of the intermediate mold 200 and the lower mold 300. The chip cutting punch 190 is for cutting chips attached to both ends.

The intermediate mold 200 is connected to a lower side of the upper mold 100 by a predetermined distance and two steel panels are vertically adhered to each other. The first and second outer punches 110 and 120, The first and second bending punch passing holes 230 and 240 through which the first and second bending punches 130 and 140 are passed and the first and second bending punch passing holes 230 and 240 through which the first and second cutting punches 150 and 160 pass, 2 cutting punch passing holes 250 and 260 and a chip cutting punch inserting hole 270 through which the chip cutting punch 190 passes are formed.

The first and second outer punch passing holes 210 and 220 correspond to the first and second outer punches 110 and 120 of the upper mold 100 and are spaces into which the first and second outer punches 110 and 120 are inserted.

The first and second bending punch passing holes 230 and 240 correspond to the first and second bending punches 130 and 140 of the upper mold 100 and are spaces into which the first and second bending punches 130 and 140 are inserted.

The first and second cutting punch passing holes 250 and 260 correspond to the first and second cutting punches 150 and 160 of the upper mold 100 and are spaces into which the first and second cutting punches 150 and 160 are inserted.

The chip cutting punch inserting hole 270 is a space into which the chip cutting punch 190 of the upper mold 100 is inserted as described above.

The lower mold 300 is positioned below the intermediate mold 200 by forming two panels in close contact with each other and includes first and second discharge holes 311 and 312 and first and second bending portions 321 and 322, first and second cutting punch insertion holes 331 and 332, and first and second discharge holes 341 and 342, and a plurality of supporters 350. In this lower mold 300, a chip cutting punch inlet hole 360, a rod receiving groove 370 and a pin receiving groove 380 are formed.

The first discharge hole 311 is formed at a position corresponding to the first outer punch 110 of the upper mold 100. The first outlet hole 311 is a space for inserting the end of the first outer punch 110 when the upper mold 100 is punched and at the same time by punching the first outer punch 110, (M) is discharged.

The second discharge hole 312 is formed at a position corresponding to the second outer shape punch 120 of the upper mold 100. The second outlet hole 312 is a space through which the end of the second outer punch 120 is inserted when the upper mold 100 is punched and at the same time by punching the second outer punch 120, (M) is discharged.

The first bending portion 321 is formed at a position corresponding to the first bending punch 130 of the upper mold 100 and has a concave shape downward. That is, when the upper mold 100 is punched, the first bending punch 130 convex downward is punched toward the lower first bending portion 321, so that the first bending punch 130 and the first bending punch 130, The spoon material plate M lying between the first and second springs 321 and 321 is bent to form a concave bowl portion S1.

The second bending portion 322 is formed at a position corresponding to the second bending punch 140 of the upper mold 100 and has a concave shape downward. That is, when the upper mold 100 is punched, the downwardly convex second bending punch 140 punches toward the lower second bending portion 322, so that the second bending punch 140 and the second bending punch 140, The spoon material plate M located between the first and second springs 322 is bent to form the concave shape of the bowl S1.

The first cutting punch insertion hole 331 is formed at a position corresponding to the first cutting punch 150 of the upper mold 100. The first cutting punch insertion hole 331 is a space into which the end of the first cutting punch 150 is inserted when the upper mold 100 punches.

The second cutting punch insertion hole 332 is formed at a position corresponding to the second cutting punch 160 of the upper mold 100. The second cutting punch insertion hole 332 is a space into which the end of the second cutting punch 160 is inserted when the upper mold 100 punches.

The first discharge hole 341 is a space through which the bowl portion S1 and the neck portion S2 separated from the spoon material plate M by the punching of the first cutting punch 150 are discharged. When the upper mold 100 is punched downward, the first cutting punch 150 cuts the end of the neck portion S2 attached to the spoon material plate M, so that when the neck portion S2 is cut The neck portion S2 formed integrally with the bowl portion S1 which is depressed by the punching of the first bending punch 130 is separated from the spoon material plate M. [ The neck portion S1 separated from the first bending punch 130 and the neck portion S2 separated from the spoon material plate M by the first cutting punch 150 are passed to the outside of the lower mold 300 The space for discharging is the first discharge hole 341.

The second discharge hole 342 is a space through which the bowl portion S1 and the neck portion S2 separated from the spoon material plate M by the punching of the second cutting punch 160 are discharged. When the upper mold 100 is punched downward, the second cutting punch 160 cuts the end of the neck portion S2 attached to the spoon material plate M, and when the second cutting punch 160 is cut, the second bending punch 140 The neck portion S2 formed integrally with the bowl portion S1 which is depressed by the punching of the spoon material plate M is separated from the spoon material plate M. The neck portion S2 separated from the spoon material plate M by the second cutting punch 160 and the bowl portion S1 recessed by the second bending punch 140 are passed to the outside of the lower mold 300 The space for discharging is the second discharge hole 342.

A plurality of supporters 350 are provided on left and right upper surfaces of the lower mold 300 along the direction in which the spoon material plate M enters. Insertion grooves 351 are formed in the outer surface of the supporter 350 at predetermined depths so that the left and right ends of the spoon material plate M are respectively inserted into the insertion grooves 351 of the supporters 350 arranged on the left and right. The supporter 350 is lowered when an external force is applied, and is raised by an elastic force when an external force is removed.

The chip cutting punch inlet hole 360 is a space into which the tip of the chip cutting punch 190 of the upper mold 100 is inserted as described above.

The rod receiving groove 370 receives the end of the material plate punching rod 170 penetrating the spoon material plate M when the upper mold 100 is punched downward.

The pin receiving groove 380 receives the end of the fixing pin 180 passing through the through hole M1 of the spoon material plate M when the upper mold 100 is punched downward.

The upper and lower ends of the upper mold 100, the intermediate mold 200 and the lower mold 300 are inserted into the upper and lower molds 100 and 300, respectively, Are prevented from moving horizontally relative to each other by the guide rods (500) passing therethrough, and are moved only in the vertical direction.

The support box 400 is installed on the lower side of the lower mold 300 and includes a bottom plate 410, a wall 420 vertically installed on the bottom plate 410, And an upper plate 430 installed at an upper end of the upper plate 430.

The walls 420 are installed one above the bottom plate 410 at a predetermined distance.

The upper plate 430 is a portion contacting the bottom surface of the lower mold 300.

Hereinafter, the apparatus for manufacturing a spoon according to the present invention will be described with reference to FIGS. 1 to 3J. Hereinafter, a system for manufacturing a fork according to the present invention will be described with reference to FIGS.

FIG. 4 is an exploded perspective view of the fork manufacturing apparatus according to the present invention, FIG. 5 is a sectional view of the fork manufacturing apparatus according to the present invention, FIGS. 6A to 6N illustrate a fork production apparatus using the fork manufacturing apparatus according to the present invention FIG. 7 is a view showing a fork produced by the fork manufacturing apparatus according to the present invention.

The apparatus for manufacturing a fork according to the present invention is an apparatus for manufacturing a fork by punching or cutting a fork material plate P made of a steel material. The apparatus includes an upper mold 600 and an intermediate mold 600 disposed below the upper mold 600, A lower mold 800 disposed on the lower side of the intermediate mold 700 and a support case 900 disposed on the lower side of the lower mold 800. [ Here, the fork material plate P enters between the intermediate mold 700 and the lower mold 800, and the upper mold 600 performs a punching operation or a cutting operation to produce a fork.

The upper mold 600 is formed by three steel panels in close contact with each other and includes a first outer punch 610, a fork blade punch 620, a second outer punch 630, a cutting punch 640, a bending punch 650, and a separation punch 660 are provided.

The first outer punch 610 is a punching blade for punching a fork material plate P entering between the intermediate mold 700 and the lower mold 800 to form a half of the fork outer shape. More specifically, the fork includes a fork blade portion F1 having a plurality of fork blades formed thereon for picking up or storing food, a neck portion F2 formed integrally with the fork blade portion F1, The present invention is a device for manufacturing the fork blade portion F1 and the neck portion F2. When the first outer punch 610 is punched, a punching hole formed by the punching is formed The outer shape half of the fork blade portion F1 and the neck portion F2 are formed on both sides in the opposite directions, respectively. That is, the outer shape half of the fork blade part F1 and the neck part F2 is formed on the front side of the punching hole formed by the punching of the first outer punch 610 and the fork blade part F1 and the neck part F2 are formed on the rear side, Half of the external shape F2 is formed. At this time, if the fork blade part F1 is looking to the left side in front of the punching hole and the neck part F2 is looking to the right side, the fork blade part F1 is on the right side and the neck part F2 is on the back side of the punching hole I look to the left. The reason why the fork blade portion F1 and the neck portion F2 are viewed in opposite directions on both sides of the punching hole is to minimize the loss of the fork material plate P. [

The fork punch 620 punches a portion between the fork blades F 1 and the fork blades F 1 a. The upper mold 600 includes a plurality of punching punches 620. More specifically, a plurality of fork blades F 1 a are formed at regular intervals in the fork blade portion F 1. A fork blade punch 620 is formed such that an empty space is formed between the fork blades F 1 a. The fork blade punch 620 includes a first fork blade punch 621, a second fork blade punch 622, and a third fork blade punch 622. The first fork blade punch 621, the second fork blade punch 622, A third fork blade punch 623 and a fourth fork blade punch 624.

The first fork blade punch 621 is provided on one side of the upper mold 600. The first fork blade punch 621 is provided on the rear side of the first outer punch 610. That is, the first fork punch 621 first punches the fork material plate P before the outer shape half of the fork blade part F1 and the neck part F2 is formed by the first outer punch 610, And penetrates between the fork material plates P at the portion where the blade F1a is to be formed.

The second fork edge punch 622 is provided on one side of the upper mold 600 and is provided in a direction opposite to the first fork edge punch 621. That is, when the first fork blade punch 621 is provided on the left side of the upper mold 600, the second fork blade punch 622 is provided on the right side of the upper mold 600. Further, the second fork edge punch 622 is provided in front of the first outer punch 610. The second fork punch 622 punches the fork material plate P formed with the outer shape half of the fork blade portion F1 and the neck portion F2 by the first outer punch 610 to form a fork blade F1a ) Is formed between the fork material plates (P).

The third fork blade punch 623 is provided on one side of the upper mold 600 in the same direction as the first fork blade punch 621 and is provided on the front side of the second fork blade punch 622. The third fork blade punch 623 passes through the side of the portion punched by the first fork blade punch 621, thereby forming the fork blade F1a on the fork material plate P. [ Three fork blades Fla are formed in the fork material plate P by punching the first fork blade punch 621 and the third fork blade punch 623.

The fourth fork blade punch 624 is provided on one side of the upper mold 600 in the same direction as the second fork blade punch 622 and is provided on the front side of the third fork blade punch 623. The fourth fork blade punch 624 penetrates the side portion of the portion punched by the second fork blade punch 622, thereby forming the fork blade F1a on the fork material plate P. [ Three fork blades Fla are formed in the fork material plate P by punching the second fork blade punch 622 and the third fork blade punch 623.

The second fork blade punch 622 and the third fork blade punch 623 and the fourth fork blade punch 624 are disposed between the first outer punch 610 and the second outer punch 630 Respectively.

The second outer punch 630 is spaced apart from the fourth fork punch 624 by a predetermined distance and punches the fork material plate P punched by the fourth fork punch 624. The shape of the half of the outer shape of the fork blade part F1 and the neck part F2 is formed by the first outer punch 610 and the shape of the other half is formed by the second outer punch 630. [ That is, the second outer punch 630 forms the outer shape half of the fork blade portion F1 and the neck portion F2 of the remaining portion not formed by the first outer punch 610. At this time, the end of the fork blade part F1 and the end of the neck part F2 are not cut by the second outer punch 630 but remain attached to the fork material plate P as they are.

The cutting punch 640 cuts the end of the fork blade part F1 from the fork material plate P and is provided with a plurality of the upper die 600. [ A fork blade F1a is formed by the fork blade punch 620 and the fork blade portion F1 and the neck portion F2 are formed by the first outer punch 610 and the second outer punch 630, Since the end of the fork blade part F1 is attached to the fork material plate P so that the end of the fork blade part F1 is cut off from the fork material plate P It is a cutting punch. The cutting punch 640 is composed of a first cutting punch 641 and a second cutting punch 642.

The first cutting punch 641 is spaced a predetermined distance from the front side of the second outer punch 630. That is, the fork material plate P punched by the second outer shape punch 630 is punched. The forked portion F1 and the neck portion F2 integrally formed on the forked portion F1 are formed one by one by the first outer punch 610 and the second outer punch 630 as described above, The first cutting punch 641 cuts the end of one fork blade part F1.

The second cutting punch 642 is spaced apart from the first cutting punch 641 by a predetermined distance. The second cutting punch 642 cuts the other fork blade portion F1 not cut by the first cutting punch 641 so that the fork blade portion F1 is separated from the fork material plate P. [

The bending punch 650 is formed to be convex downward so as to bend the forked part F1 separated from the fork material plate P by an end. The bending punch 650 is composed of a first bending punch 651 and a second bending punch 652.

The first bending punch 651 passes through the first cutting punch 641 to form a forked part F1 separated from the fork material plate P into a recessed shape. More specifically, when the fork material plate P is punched by the first outer punch 610 and the second outer punch 630, the fork blade portion F1 and the neck portion F2 are formed in opposite directions The first bending punch 651 is formed by depressing the forked part F1 of the forked part F1 and the neck F2 downward.

The second bending punch 652 passes through the second cutting punch 642 to form a forked part F1 having a tip end separated from the fork work plate P in a depressed form. More specifically, the second bending punch 652 includes a fork blade portion F1 formed in a direction opposite to the first bending punch 652 and a forked portion F2, which is not bent by the first bending punch 651, It is the second bending punch 652 that the blade portion F1 is formed to be depressed downward.

A support pin 653 inserted between the fork blades F 1 a is protruded from the bending punch 650 of the upper mold 600.

The support pin 653 is inserted between the fork blades Fla formed on the fork material plate P when the upper mold 600 punches to support both sides of the fork blades Fla, Thereby preventing the fork blade F1a from twisting or bending due to external force.

The separating punch 660 cuts the end of the neck portion F2 where the forked portion F1 is bent by the bending punch 650. [ The separation punch 660 is composed of a first separation punch 661 and a second separation punch 662.

The first separating punch 661 is spaced a predetermined distance from the front side of the second bending punch 652. The first separating punch 661 cuts the end of one neck portion F2 out of two forked flaps F1 formed to face in different directions and a neck portion F2 formed integrally with the forked portion F1 .

The second separation punch 662 is spaced a predetermined distance from the front side of the first separation punch 661. The second separating punch 662 cuts the other neck portion F2 not cut by the first separating punch 661 so that the neck portion F2 is separated from the fork material plate P. [

The upper mold 600 is provided with a material plate punching rod 670, a plurality of fixing pins 680 and two chip cutting punches 690.

The material plate punching rods 670 are punching blades in the form of thin rods passing through the intermediate mold 700 and formed at the center of the entrance portion into which the fork material plate P enters. The material sheet punching rod 670 is punched out of the upper mold 600 to form a through hole P1 at the center of the entrance of the fork material plate P entering between the intermediate mold 700 and the lower mold 800, .

The fixing pin 680 is formed along the direction in which the fork material plate P enters, and passes through the intermediate mold 700 and has a sharp end. The fixing pin 680 is inserted into the through hole P1 when the upper mold 600 punches the fork material plate P. [ More specifically, when the fork material plate P enters between the intermediate mold 700 and the lower mold 800, the upper mold 600 punches downward, and the material plate punching rods 670 are pushed downward, The through hole P1 is formed in the plate P and then the fork material plate P is further moved in. Thereafter, the upper mold 600 is punched downward again. At this time, The fixing pin 680 provided at the side is inserted into the through hole P1 formed in the fork material plate P. [ When the first outer punch 610 or the second outer punch 630 or the like punches the fork material plate P, the fixing pin 680 is inserted into the through hole P1 simultaneously with or immediately before punching Thereby preventing the fork material plate (P) from moving due to the punching pressure.

The chip cutting punch 690 is provided on each of both ends of the end of the upper mold 600 so that both ends of the fork material plate P passing through the first separating punch 661 and the second separating punch 662 Is cut out by punching. Since the chip cutting punch 690 penetrates the intermediate mold 700 and cuts the fork material plate P, the intermediate mold 700 is provided with a chip cutting punch insertion hole And a chip cutting punch inlet hole 880 through which the chip cutting punch 690 enters when the upper mold 600 is punched is formed in the lower mold 800. [ More specifically, the fork material plate P includes a first outer punch 610, a fork blade punch 620, a second outer punch 630, a cutting punch 640, a bending punch 640, 650 and the separating punch 660 and then discharged to the outside of the intermediate mold 700 and the lower mold 800, a part of the chip is left on both ends. For cutting is the chip cutting punch 690.

The intermediate mold 700 is connected to the lower side of the upper mold 600 by a predetermined distance, and two steel panels are closely adhered to each other. Here, the first and second outer punches 610, A cutting punch passing hole 740 through which the cutting punch 640 passes, and a bending punch hole 730 through which the fork punch 630 passes. A bending punch through hole 750 through which the separating punch 660 is passed and a separating punch passing hole 760 through which the separating punch 660 is passed and a chip cutting punch inserting hole 770 through which the chip cutting punch 690 is passed .

The first and second outer punch passing holes 710 and 720 correspond to the first and second outer punches 610 and 630 of the upper mold 600 and the first and second outer punches 610 and 630 are inserted.

The fork blade punch passing hole 730 corresponds to the fork blade punch 620 of the upper mold 600 and is a space into which the fork blade punch 620 is inserted. Since the fork blade punch 620 is constituted by the first fork blade punch 621, the second fork blade punch 622, the third fork blade punch 623 and the fourth fork blade punch 624, The corresponding fork blade punch passing hole 730 also has the first fork blade punch passing hole 731 corresponding to the first fork blade punch 621 and the second fork blade punch 621 corresponding to the second fork blade punch 622, A third fork punch hole 733 corresponding to the third fork blade punch 623 and a fourth fork blade punch hole 734 corresponding to the fourth fork blade punch 624, .

The cutting punch passing hole 740 corresponds to the cutting punch 640 of the upper mold 600 and is a space into which the cutting punch 640 is inserted. The cutting punch 640 is composed of the first cutting punch 641 and the second cutting punch 642 so that the cutting punch passing hole 740 corresponding to the first cutting punch 641 and the first cutting punch 642 corresponding to the first cutting punch 641, And a second cutting punch passing hole 742 corresponding to the second cutting punch 642. As shown in Fig.

The bending punch passing hole 750 corresponds to the bending punch 650 of the upper mold 600 and is a space into which the bending punch 650 is inserted. Since the bending punch 650 is constituted by the first bending punch 651 and the second bending punch 652, the corresponding bending punch passing hole 750 is also formed by the first bending punch 651 corresponding to the first bending punch 651, And a second bending punch passing hole 752 corresponding to the second bending punch 652. The second bending punch passing hole 752 corresponds to the second bending punch 652,

The separating punch passing hole 760 corresponds to the separating punch 660 of the upper mold 600 and is a space into which the separating punch 660 is inserted. Since the separation punch 660 is constituted by the first separation punch 661 and the second separation punch 662, the corresponding separation punch passing hole 760 is also separated from the first separation punch 661 A punch through hole 761 and a second separating punch through hole 762 corresponding to the second separating punch 662.

The chip cutting punch insertion hole 770 is a space into which the chip cutting punch 690 of the upper mold 600 is inserted as described above.

The lower mold 800 includes two first and second discharge holes 811 and 912 and a fork blade punch hole 820. The first and second discharge holes 811 and 912 and the fork blade punch hole 820 are located below the intermediate mold 700, A cutting punch hole 830, a bending portion 840, a separation punch hole 850 and a discharge hole 860 are formed and a plurality of supporters 870 are provided. In this lower mold 800, a chip cutting punch inlet hole 880, a rod receiving groove 891, a pin receiving groove 892, and a support pin hole 843 are formed.

The first discharge hole 811 is formed at a position corresponding to the first outer punch 610 of the upper mold 600. The first discharge hole 811 is a space in which the end of the first outer punch 610 is inserted when the upper mold 600 is punched and at the same time the first outer punch 610 is punched, (P) is discharged.

The second discharge hole 812 is formed at a position corresponding to the second outer punch 630 of the upper mold 600. The second outlet hole 812 is a space in which the end of the second outer punch 630 is inserted when the upper metal mold 600 is punched and at the same time by the punching of the second outer punch 630, (P) is discharged.

The fork blade punch hole 820 is formed at a position corresponding to the fork blade punch 620 of the upper mold 600. The fork blade punch hole 820 is a space in which the end of the fork blade punch 620 is inserted when the upper mold 600 is punched and at the same time by punching the fork blade punch 620, Is discharged. Since the fork blade punch 620 is constituted by the first fork blade punch 621, the second fork blade punch 622, the third fork blade punch 623 and the fourth fork blade punch 624, The fork blade punch hole 820 also includes a first fork blade punch hole 821, a second fork blade punch hole 822, a third fork blade punch hole 823, and a fourth fork blade punch hole 823, (824).

The cutting punch hole 830 is formed at a position corresponding to the cutting punch 640 of the upper mold 600. The cut punch hole 830 is a space into which the end of the cutting punch 640 is inserted when the upper mold 600 is punched. Since the cutting punch 640 is constituted by the first cutting punch 641 and the second cutting punch 642, the cutting punch hole 830 is also formed by the first cutting punch hole 831 and the second cutting punch hole 830, (832).

The bending portion 840 is formed at a position corresponding to the bending punch 650 of the upper mold 600 and has a concave shape downward. That is, when the upper mold 600 is punched, the downwardly convex bending punch 650 punches toward the concave bending portion 840 downward, so that the fork material 650 between the bending punch 650 and the bending portion 840 The plate P is bent so that the forked portion F1 of the concave shape is formed. Since the bending punch 650 is constituted by the first bending punch 651 and the second bending punch 652, the bending portion 840 also includes the first bending portion 841 and the second bending portion 842, .

A support pin hole 843 is formed in the bending portion 840. The support pin hole 843 is a hole into which the support pin 653 provided in the bending punch 650 is inserted when the upper mold 600 is punched.

The separation punch hole 850 is formed at a position corresponding to the separation punch 660 of the upper mold 600. The separating punch hole 850 is a space into which the end of the separating punch 660 is inserted when the upper metal mold 600 is punched. Since the separating punch 660 is constituted by the first separating punch 661 and the second separating punch 662, the separating punch hole 850 is also divided into the first separating punch hole 851 and the second separating punch hole 810, (852).

The discharge hole 860 is a space through which the fork blade part F1 and the neck part F2 separated from the fork material plate P by the separating punch 660 are discharged. When the upper mold 600 is punched downward, the separating punch 660 cuts the end of the neck portion F2 attached to the fork material plate P. When the upper mold 600 is thus cut, The neck portion F2 formed integrally with the forked flap portion F1 separated from the fork material plate P is separated. A space for discharging the neck portion F2 separated from the fork material plate P by the cutting punch 640 and the forked portion F1 recessed by the bending punch 650 to the outside of the lower mold 800 Is a discharge hole 860. When the fork material plate P is processed by the first outer punch 610, the second outer punch 630, the cutting punch 640, the bending punch 650 and the separating punch 660 as described above, Two of the forked part F1 and the neck part F2 are formed in opposite directions to each other and the two forked part F1 and the neck F2 are discharged to the outside of the lower mold 800 The discharge hole 860 is composed of a first discharge hole 861 and a second discharge hole 862. That is, one fork blade part F1 and the neck part F2 are discharged through the first discharge hole 861 and the remaining one fork blade part F1 and the neck part F2 Is discharged.

A plurality of supporters 870 are provided on the left and right sides of the upper surface of the lower mold 800 along the entry direction of the fork material plate P. [ The outer surface of the supporter 870 is inserted into the insertion groove 871 of the supporter 870 to which the left and right ends of the fork material plate P are arranged. The supporter 870 is lowered when an external force is applied, and is raised by an elastic force when an external force is removed.

The chip cutting punch inlet hole 880 is a space into which the tip of the chip cutting punch 690 of the upper mold 600 is inserted as described above.

The rod receiving groove 891 receives the end of the material plate punching rod 670 passing through the fork material plate P when the upper mold 600 is punched downward.

The pin receiving groove 892 receives the end of the fixing pin 680 that has passed through the through hole P1 of the fork material plate P when the upper mold 600 is punched downward.

The upper and lower ends of the upper mold 600, the intermediate mold 700 and the lower mold 800 are inserted into the upper and lower molds 600 and 800, respectively, The guide bars 1000 are prevented from being horizontally mutually moved by the guide rods 1000, and are moved only in the vertical direction precisely.

The support case 900 is installed on the lower side of the lower mold 800 and includes a bottom plate 910, a wall body 920 vertically installed on the bottom plate 910, And an upper plate 930 installed at the upper end of the upper plate 930.

The walls 920 are installed one above the bottom plate 910 at a predetermined distance.

The upper plate 930 is a portion that contacts the bottom surface of the lower mold 800.

100: upper mold 110: first outer punch
120: second outer shape punch 130: first bending punch
140: second bending punch 150: first cutting punch
160: second cutting punch 170: material plate punching rod
180: fixing pin 190: chip cutting punch
200: intermediate mold 210: first outer punch passing hole
220: second outer punch passing hole 230: first bending punch passing hole
240: second bending punch passing hole 250: first cutting punch passing hole
260: second cutting punch passing hole 270: chip cutting punch insertion hole
300: lower mold 311: first discharge hole
312: second discharge hole 321: first bending portion
322: second bending portion 331: first cutting punch insertion hole
332: second cutting punch insertion hole 341: first discharge hole
342: second discharge hole 350: supporter
351: Insertion groove 360: Chip cutting punch entry hole
370: rod receiving groove 380: pin receiving groove
400: support 410: bottom plate
420: wall 430: top plate
500: guide rod M: spoon material plate
M1: through hole S1:
S2: Neck part
600: upper mold 610: first outer punch
620: fork blade punch 621: first fork blade punch
622: second fork blade punch 623: third fork blade punch
624: Fourth fork punch 630: Second outer punch
640: cutting punch 641: first cutting punch
642: second cutting punch 650: bending punch
651: first bending punch 652: second bending punch
653: support pin 660: detachment punch
661: first separation punch 662: second separation punch
670: Material plate punching rod 680: Fixing pin
690: chip cutting punch 700: intermediate mold
710: first outer punch passing hole 720: second outer punch passing hole
730: fork blade punch passing hole 731: first fork blade punch passing hole
732: second fork blade punch passing hole 733: third fork blade punch passing hole
734: Fourth fork blade punch passing hole 740: Cutting punch passing hole
741: first cutting punch passing hole 742: second cutting punch passing hole
750: bending punch passing hole 751: first bending punch passing hole
752: 2nd bending punch through hole 760: Separation punch through hole
761: first separation punch passing hole 762: second separation punch passing hole
770: Chip cutting punch insertion hole 800: Lower mold
811: first discharge hole 812: second discharge hole
820: fork blade punch hole 821: first fork blade punch hole
822: second fork blade punch hole 823: third fork blade punch hole
824: Fourth fork blade punch hole 830: Cutting punch hole
831: first cutting punch hole 832: second cutting punch hole
840: bending portion 841: first bending portion
842: second bending portion 843: support pinhole
850: separation punch hole 851: first separation punch hole
852: Second separation punch hole 860: Discharge hole
861: first discharge hole 862: second discharge hole
870: supporter 871: insertion groove
880: Chip cutting punch entry hole 891: Rod receiving groove
892: Pin receiving groove 900: Supported
910: bottom plate 920: wall
930: upper plate F1: fork blade
F1a: fork blade F2: neck portion
P: Fork material plate P1: Through hole

Claims

1. An apparatus for manufacturing a spoon comprising a bowl (S1) for containing food and a neck (S2) formed integrally with the bowl (S1)
A first outer punch 110 for punching the entering spoon material plate M so that the outer shape half of the bowl portion S1 and the neck portion S2 are formed in opposite directions on both sides of the punching hole, The spoon material plate M is punched out so as to form a remaining outer shape half of the neck portion S1 and the neck portion S2 apart from the first outer punch 110 by a predetermined distance, The first outer punch 110 and the second outer punch 120 can be bent by the first outer punch 120 and the second outer punch 120, 130 and the second bending punch 140 and the ends of the neck S2 where the bore S1 is bent by the first bending punch 130 and the second bending punch 140, (100) provided with a first cutting punch (150) and a second cutting punch (160) which are cut from the first cutting punch (M);
The first and second discharge holes 311 and 312 are formed at positions corresponding to the first and second outer punches 110 and 120 of the upper mold 100, First and second bending portions 321 and 322 are formed to be concave downward at positions corresponding to the first and second bending punches 130 and 140. The first and second cutting punches 150 and 160 are formed at positions corresponding to the first and second cutting punches 150 and 160, Holes 331 and 332 are formed in the first and second cutting punches 150 and 160. The first and second discharge holes 150 and 160 discharge the bowl portion S1 and the neck portion S2 separated from the spoon material plate M by the first and second cutting punches 150 and 160, And a lower mold (300) on which the lower spools (341, 342) are formed.

The method according to claim 1,
An intermediate mold 200 is further provided between the upper mold 100 and the lower mold 300,
The first and second outer punch holes 210 and 220 through which the first outer punch 110 and the second outer punch 120 of the upper mold 100 respectively pass are formed in the intermediate mold 200, The first and second cutting punch passing holes 230 and 240 through which the first and second cutting punches 130 and 140 pass, respectively, and the first and second cutting punch passing holes 250, 260) are formed on the surface of the spoon.

The method according to claim 1,
The lower mold 300 is provided with a plurality of supporters 350 on the left and right along the entry direction of the spoon material plate M and an insertion groove 351 is formed on the outer surface of the supporter 350, And the left and right ends of the spoon material plate (M) are respectively inserted into the insertion grooves (351) of the supporters (350) arranged on the left and right sides.

The method of claim 2,
A material punching rod 170 for forming a through hole M1 in a spoon material plate M on both sides of an inlet portion into which the spoon material plate M enters is disposed in the upper mold 100, And a plurality of fixing pins 180 are provided to penetrate the intermediate mold 200 along the direction in which the spoon material plate M enters, so that the upper mold 100 is punched , The fixing pin (180) is inserted into the through hole (M1).

The method of claim 2,
The upper mold 100 is provided with chip cutting punches 190 on both sides of the end thereof and the intermediate mold 200 is formed with a chip cutting punch insertion hole 270 into which the chip cutting punch 190 is inserted, The lower mold 300 is provided with a chip cutting punch inlet hole 360 through which the chip cutting punch 190 enters when the upper mold 100 is punched and the first and second cutting punches 150 and 160 And both ends of the passed spoon material plate (M) are cut by punching.

A fork manufacturing apparatus comprising a forked portion (F1) formed with a plurality of fork blades (F1a) for taking food and a neck portion (F2) formed integrally with the forked portion (F1)
A first outer punch 610 for punching the entering fork material plate P so that the outline form halves of the forked part F1 and the neck part F2 are formed in opposite directions on both sides of the punching hole, A plurality of fork blade punches 620 for punching the portion between the fork blades F1 and F2 in the fork material plate P and a plurality of fork blade punches 610 for punching the fork material plate P to form the tips of the fork blade F1 and the neck F2 A second outer punch 630 for forming the rest of the outer shape of the forked part F1 and the neck part F2 except for the end of the forked part F1 by cutting the end of the forked part F1, A bending punch 650 formed to be convex downward so as to bend the forked portion F1 separated from the fork material plate P by a cutting punch 640 for separating the forked workpiece P from the forked workpiece P, And a separating punch 660 for cutting the end of the neck portion F2 bent by the fork edge portion F1 by the bending punch 650 The upper mold 600 and;
First and second discharge holes 811 and 812 are formed at positions corresponding to the first and second outer punches 610 and 630 of the upper mold 600 and the first and second discharge holes 811 and 812 are formed at the lower side of the upper mold 600, A cutting punch hole 830 is formed at a position corresponding to the cutting punch 640 and a position corresponding to the bending punch 650 is formed at a position corresponding to the bending punch 650, And a separating punch hole 850 is formed at a position corresponding to the separating punch 660. The separating punch 660 separates the punching material from the fork material plate P And a lower mold 800 having formed thereon a discharge hole 860 through which the forked flange portion F1 and the neck portion F2 are discharged.

The method of claim 6,
An intermediate mold 700 is further provided between the upper mold 600 and the lower mold 800,
The first and second outer punch passing holes 710 and 720 through which the first and second outer punches 610 and 630 of the upper mold 600 are respectively passed are formed in the intermediate mold 700. The fork punch 620 A cutting punch through hole 740 through which the cutting punch 640 passes is formed and a bending punch through hole 750 through which the bending punch 650 passes is formed, And a separate punch through hole (760) through which the separating punch (660) passes is formed.

The method of claim 6,
The lower mold 800 is provided with a plurality of supporters 870 on the left and right along the entry direction of the fork material plate P and an insertion groove 871 is formed on the outer surface of the supporter 870, And the left and right ends of the fork material plate (P) are respectively inserted into the insertion grooves (871) of the supporters (870) arranged on the left and right sides.

The method of claim 7,
A material punching rod 670 for forming a through hole P1 in the fork material plate P at the center of the entrance portion where the fork material plate P enters the upper mold 600 is inserted into the intermediate mold 700 And a plurality of fixing pins 680 are provided to penetrate the intermediate mold 700 along the direction in which the fork material plate P is introduced so that the upper mold 600 is punched Wherein the fixing pin (680) is inserted into the through hole (P1).

The method of claim 7,
The upper mold 600 is provided with chip cutting punches 690 on both sides of the end thereof and the intermediate mold 700 is formed with a chip cutting punch insertion hole 770 into which the chip cutting punch 690 is inserted, The lower mold 800 is formed with a chip cutting punch inlet hole 880 through which the chip cutting punch 690 enters when the upper mold 600 is punched, And both ends of the plate (P) are cut by punching.

The method of claim 6,
A support pin 653 inserted between the fork blades F 1 a is protruded from the bending punch 650 of the upper mold 600 and the bending portion 840 of the lower mold 800 includes the support pins 653 Is inserted into the support pin hole (843).