KR101378820B1 - A punching mold for a sheet - Google Patents

Abstract

The present invention relates to a sheet punching mold including a lower mold (200) and an upper mold (100) moved down toward the lower mold (200) to punch a center hole (13) in a sheet (10) and form a perforated line (14a) for cutting only an original sheet (11) around the center hole (13) by press action. The upper mold (100) has a mold holder (110), a blanking punch (122), fixed to the mold holder (110), for blanking the center hole (13) in the sheet (10), a perforating punch (121) fixed to the mold holder (110), having a center through-hole (121a) penetrating through a center portion thereof so that the blanking punch (122) is positioned, and forming the perforated line (14a) for cutting only the original sheet (11) of the sheet (10) by a lower corner (121b′) of a center through-hole (121a), a pushing member (130) provided between the blanking punch (122) and the perforating punch (121), and pushing and holding the sheet (10) when the blanking punch (122) blanks the center hole (13) and the perforating punch (121) forms the perforated line (14a) in the original sheet (11), and a pushing member (130) provided between an upper portion of the pushing member (130) and the mold holder (110), and transmitting a pressing force of the mold holder (110) to the pushing member (130) and simultaneously acting a resilient force onto the pushing member (130) when the mold holder (110) is presses against the lower mold (200). Therefore, it is possible to form both the center hole and the perforated line by one operation.

Description

Sheet Punching Mold {A PUNCHING MOLD FOR A SHEET}

TECHNICAL FIELD The present invention relates to a sheet punching mold, and more particularly, to a sheet punching mold adapted to be able to form a cutting line for cutting a center hole in the center of the sheet and cutting a circle around the center hole in one operation. will be.

In general, a metal sheet having a magnetic property, which is implemented in a predetermined pattern, is embedded in a battery pack in a battery pack of a mobile communication terminal such as a smart phone, a PCS phone, a cellular phone, and the like.

The metal sheet having such magnetic properties serves as a Near Field Communication (NFC) antenna for the mobile communication terminal to perform communication by tagging an external terminal to perform a transportation card payment function or a micro payment function, or It also dissipates heat and eliminates electromagnetic interference (EMI).

Such a metal sheet is produced by attaching metal powder powder such as iron oxide powder powder at high temperature to form a sheet and then sticking to a release paper.

The method of processing a pattern on a metal sheet by the prior art is described.

FIG. 1 is an operation diagram showing a method of processing the metal sheet 10 according to the prior art, and FIG. 2 is a plan view of a sheet processed using the method shown in FIG. 1.

As shown in FIG. 1, in the prior art, a metal sheet 10 to which a base paper 11 formed of iron oxide powder powder is attached to a release paper 12 is prepared (FIG. 1A), and a first blade ( A second blade mold having a second blade 2a different from the first blade through a central hole 13 (FIG. 1 (b)) by using the first blade mold 1 provided with 1a). Using (2), a perforation line 14a was formed only on the base paper 11 by being spaced apart from the central hole 13 by a predetermined interval.

However, the above technique requires two cutting molds (1, 2) and requires two cutting processes, a process of cutting the central hole 13 and a process of cutting the cutting line 14a. There was a problem that the workability is reduced.

In addition, the above technique forms a central hole 13 and a perforation line using the blade mold, but in the case of the blade mold, the blades 1a and 2a become blunt when repeatedly used, and there is a problem that must be frequently replaced. Since the upper surface of the phosphorous metal sheet 10 is made of metal powder, the blades were blunted in shorter cycles and thus had to be replaced more frequently, which led to an increase in manufacturing cost.

On the other hand, Korean Patent Application Publication No. 10-2005-0002105 (published: January 07, 2005) discloses "a cutting mold used in the panel sheet cutting device for a liquid crystal display device and the manufacturing method of the cutting mold" In the case of this technique, the above problem exists because a cutting mold is used to process the panel sheet.

The present invention was created to solve the problems of the prior art as described above, the object of the sheet punching mold according to the present invention,

First, it is possible to improve the workability of the sheet by cutting the central hole in the center of the sheet with a single operation of the upper mold and forming a cutting line for cutting only the circle around the central hole.

Secondly, the punching hole punching the center hole of the sheet is centered to extrapolate to the punching punch to position the pressing member for pressing and fixing the sheet, and the cutting punch for positioning the cutting member to extrapolate to the pressing member to form a cutting line for cutting the original. By adopting the configuration, it is possible to form the central hole and the cutout line by simply pressing the upper mold with respect to the lower mold with a simple configuration.

Third, it is to provide a sheet punching mold suitable for being able to be used semi-permanently without replacing parts by allowing the cutting of the original by a plate-shaped cutting punch having a hole formed in the center without using a blade.

Sheet punching mold according to the present invention for achieving the above object is a punching mold for punching a sheet consisting of a release paper and a base paper adhered to the release paper, the lower mold and the lower mold by pressing while lowering the lower mold; It comprises a top mold for punching the center hole in the sheet placed on the upper surface of the mold and forming a cut line for cutting only the circle around the central hole, the center of the lower mold is formed through the punch insertion hole,

The upper mold may include a mold holder movable in a direction opposite to the lower mold and a shape fixed to the mold holder and mating with the punch insertion hole to partially insert into the punch insertion hole, thereby forming a lower mold. A punch punch punching the center hole on the sheet placed on the upper surface, and a central through hole is formed in the center portion so as to be fixed to the mold holder and the punch punch is located therein, and the lower edge of the central hole is the original sheet of the sheet. A cutting punch for forming a cutting line for cutting a cutout, and a central hole is formed so as to be inserted between the punching punch and the cutting punch while being inserted into the central through hole of the cutting punch while inserting the punching punch into the center hole. Press to hold the sheet when punching the center hole and the cutting punch forms a cut line on the base An elastic member provided between the ash and the upper side of the pressing member and the mold holder to transmit the pressing force of the mold holder to the pressing member when the mold holder is pressed against the lower mold and simultaneously exert an elastic force on the pressing member. Characterized in that comprises a.

The sheet punching mold according to the present invention is characterized in that the upper surface of the lower mold is formed so as to correspond to the pressing member along the edge of the punch insertion hole so that a die protrudes upward.

Sheet punching mold of the present invention, the pressing member is a ring shape with a central hole, is located inside the mold holder, characterized in that it further comprises a connection member provided between the elastic member and the ring-shaped pressing member. It is done.

The sheet punching die of the present invention is characterized in that the inner circumferential surface of the central hole of the cutting punch is tapered so that the lower edge of the central hole of the cutting punch is acute.

Sheet punching mold of the present invention having the configuration as described above has the following effects.

First, by cutting the central hole in the center of the sheet in one operation of the upper mold and by forming a cutting line for cutting only the circle around the central hole, the workability of the sheet can be improved.

Secondly, the punching hole punching the center hole of the sheet is centered to extrapolate to the punching punch to position the pressing member for pressing and fixing the sheet, and the cutting punch for positioning the cutting member to extrapolate to the pressing member to form a cutting line for cutting the original. By adopting the configuration, it is possible to form the central hole and the perforation line by simply pressing the upper mold with respect to the lower mold with a simple configuration.

Third, it is possible to use the semi-permanent without replacing parts by allowing the cutting of the original only by the plate-shaped cutting punch formed in the center hole without using the blade.

1 is an operation diagram showing a method of processing a sheet according to the prior art.
FIG. 2 is a plan view of a sheet processed using the method shown in FIG. 1. FIG.
3 is an exploded perspective view of the sheet punching mold according to an embodiment of the present invention.
4 is an exploded perspective view of FIG.
5 is a cross-sectional view of the lower mold and the upper mold is separated in the sheet punching mold according to an embodiment of the present invention.
6 to 8 is an operation of the sheet punching mold according to an embodiment of the present invention punches the center hole 13 in the sheet and forms a perforation line only on the base paper.
9 is a cross-sectional view and a plan view of a sheet processed by the sheet punching mold according to an embodiment of the present invention.

The following will be described in detail with reference to the accompanying drawings, preferred embodiments of the present invention sheet punching mold.

As shown, the sheet punching mold (A) according to an embodiment of the present invention, the punching mold for punching the sheet 10 consisting of the release paper 12 and the base paper 11 adhered to the release paper 12 As a lower mold 200 and the lower mold 200, while pressing down while acting as a press action punches the central hole 13 in the seat 10 placed on the upper surface of the lower mold 200 and the central hole 13 It characterized in that it comprises an upper mold 100 to form a cutting line (14a) to cut only the base paper 11 to the periphery.

Here, the sheet 10 may be a metal sheet in which the base paper 11 may be formed of, for example, metal powder powder (for example, iron oxide powder powder) as described above.

In the sheet punching mold (A) according to an embodiment of the present invention, in the center of the lower mold 200, the punching punch ( A punch insertion hole 201 through which 122 is inserted is formed through.

In the sheet punching mold (A) according to an embodiment of the present invention, the upper mold 100, the mold holder 110 which is operated in the opposite direction (ie up and down direction) and the direction in which the lower mold 200 is located. ) And a shape that is fixed to the mold holder 110 and mates with the punch insertion hole 201 and partially into the punch insertion hole 201 when the mold holder 110 presses the lower mold 200. A punch punch 122 for punching the central hole 13 into the seat 10 inserted and placed on the upper surface of the lower mold 200, and fixed to the mold holder 110, so that the punch punch 122 is positioned therein. The central through hole 121a is formed to penetrate up and down in the center portion, and the lower edge 121b 'of the central through hole 121a forms a cut line 14a that cuts only the base paper 11 of the sheet 10. The punch 121 and the central through hole 130a are formed so that the punching punch 122 is inserted into the central through hole 130a. While being interpolated into the central through hole 121a of the cutting punch 121, the punching punch 122 is provided between the punching punch 122 and the cutting punch 121, and the punching punch 122 opens the center hole 13 in the sheet 10. Pressing member 130 for pressing and holding sheet 10 by receiving pressing force from the mold holder 110 when punched out and the cutting punch 121 forms a cutting line 14a on the paper 11. It is provided between the upper side of the 130 and the mold holder 110 to transmit the pressing force of the mold holder 110 to the pressing member 130 when the mold holder 110 is pressed against the lower mold 200 and At the same time, it characterized in that it comprises an elastic member 150 for applying an elastic force to the pressing member 130.

In the sheet punching mold A according to the embodiment of the present invention, when the lower surface of the cutting punch 121 is used as a reference, the pressing member 130 is formed by the first height h1 from the cutting punch 121. The lower mold 200 is protruded downward in the direction, the punch punch 122 is projected downward from the cutting punch 121 to the second height (h1-h2, h1> h2), the pressing member ( The height h1 from which the protrusion 130 protrudes is greater than the height h1-h2 from which the punch punch 122 protrudes.

According to this, before the punch punch 122 punches the center hole 13, the pressing member 130 may pressurize the die 202 to press and hold the sheet 10, and the pressing member 130 may be pressed. In the state in which the sheet 10 is pressed and held, the punching action of the punching punch 122 and the cutting action of the cutting punch 121 may be sequentially performed.

In addition, the elastic member 150 is the mold holder 110 is pressed by the lower mold 200 without being disturbed by the pressing member 130 in contact with the lower mold 200 when the mold holder 110 is lowered. And it is also to transmit the pressure acting on the mold holder 110 to the pressing member 130 to perform the function to hold the pressing member 130 to press the sheet (10).

The elastic member 150 may be implemented with a synthetic resin (for example, rubber or urethane resin) of the spring or elastic material.

In addition, in the sheet punching mold A according to the embodiment of the present invention, the upper surface of the lower mold 200 corresponds to the pressing member 130 along the edge of the punch insertion hole 201 to form a die ( 202 is formed to protrude upward.

In the sheet punching mold A according to the embodiment of the present invention, the protruding height d1 of the die 202 is the same as that of the release paper 12.

According to this, the cutting punch 121 cuts only the base paper 11, and the release paper 12 is not cut | disconnected. If the protrusion height d1 of the die 202 is greater than the thickness of the release paper 12, the release paper 12 is also cut when the cutting punch 121 descends while applying pressure to the upper surface of the lower mold 200.

In the sheet punching mold (A) according to an embodiment of the present invention, the pressing member 130 is implemented in a ring shape having a central through hole (130a),

Located inside the mold holder 110, it is characterized in that the connection member 141, 142 provided between the elastic member 150 and the pressing member 130 is further included.

The connection members 141 and 142 may include a plurality of connection pins 141 having a lower end connected to the pressing member 130, and a lower surface connected to an upper end of the connection pin 141, and an upper surface of the connection member 141 and 142. It is characterized by consisting of a connecting plate 142 connected to.

According to this, the pressing member 130 does not extend to the elastic member 150, there is an advantage that can save the raw material.

In the sheet punching mold (A) according to an embodiment of the present invention, the central hole 121a of the cutting punch 121 so that the lower edge 121b 'of the central hole 121a of the cutting punch 121 becomes an acute angle. Inner circumferential surface (121b) is characterized in that the tapered.

According to this, the friction between the pressing member 130 and the cutting punch 121 can be reduced, thereby reducing the high frictional heat and noise caused by the collision of the cemented carbide and the cemented carbide, and also minimize the occurrence of crushed powder due to friction of the two metals. In particular, by tapering the inner circumferential surface 121b, the lower edge 121b 'of the central through hole 121a becomes an acute angle so that the perforated line 14a of the base paper 11 can be more easily cut off. There is an advantage.

In the sheet punching mold A according to the embodiment of the present invention, the mold holder 110 is fixed to the cover plate 111 and the cover plate 111 to which the upper side of the elastic member 150 is connected. The first plate 112 and the first plate 112, the first through hole 112a is provided to provide a clearance space for the connecting plate 142 and the elastic member 150 to move up and down, A second plate 113 having a fixed and communicating with the first through hole (112a) is formed therein, and is fixed to the second plate 113, the second through hole (113a) And a third plate 114 having a third through hole 114a communicating therewith, and the punching punch 122 is positioned in the third through hole 114a and the central through hole 121a. It is provided on the lower surface of the 113, the cutting punch 121 is fixed to the third plate 114 so that the central through hole 121a communicates with the third through hole 114a. .

According to this, the assembly of the upper mold 100 can be facilitated, and the pressing member 130, the punching punch 122, and the cutting punch 121 can be implemented easily and simply while providing a unique function. There is an advantage that can be installed in 100).

On the other hand, in the embodiment of the present invention as shown in the drawings, the second through hole 113a to hold the connecting pin 141 and guide the moving of the connecting pin 141 may be inserted into the connecting pin 141 The same number (four) as the connecting pin 141 is described so as to be formed in an almost similar size, for example, but is not limited to this, and communication with the first through hole 112a and the third through hole (114a) And the first, the third through holes (112a, 114a) can be formed in the center portion, in this case, the first, second, third plates are all the same plate having the same through holes, thereby reducing the production cost of the mold holder 110 There is an advantage that can be lowered.

On the other hand, the base paper 11 may be formed with a handle portion 11a. When the handle portion 11a is formed on the base paper 11 as described above, the die 202 may be formed to match the shape of the handle portion 11a. A protrusion 202c is formed, a recessed portion 121c is formed in the central through hole 121a, and a protrusion 130c is formed in the pressing member.

The following describes the operation of the sheet punching mold A according to the embodiment of the present invention having the configuration as described above.

6 illustrates an operation of the upper mold at the initial position, that is, the pressing member 130 presses the sheet 10 by pressing the die 202 and presses the sheet 10, and FIG. 7 shows the mold holder 110. When the punching punch 122 is in contact with the seat 10 and the center hole 13 is punched in the seat 10, a pressure is applied to the mold holder 110. The operation diagram in which the punching punch 122 and the cutting punch 121 are further lowered so that the cutting punch 121 cuts the base paper 11 is continued.

First, the seat 10 is placed on the die 202 of the lower mold 200, and the upper mold 100 is lowered so that the pressing member 130 is engaged with the die 202 with the sheet 10 interposed therebetween. The upper mold 100 is placed in an initial position (see FIG. 7).

Now press the mold holder 110 to the lower mold 200, the mold holders 111, 112, 113, 114 and the punch punch 122 and the cutting punch 121 is lowered, but die The pressing member 130 in engagement with 202 is left in place due to die 202.

However, although the pressing member 130 is in place, the mold holders 111, 112, 113, and 114 and the punching punch 122 are formed by the configuration of the elastic member 150, the first through hole 112a, and the third through hole 114a. ) And the cutting punch 121 can be performed smoothly.

As described above, when the mold holder 110 descends, the punch punch 122 protrudes further downward than the cut punch 121, so that the mold punch 110 comes into contact with the sheet 10 before the cut punch 121, so that the center hole is formed in the sheet 10. (13) is punched out (see FIG. 8).

Then, when the mold holder 110 goes further downward, the edge 121b 'of the central through hole 121a of the punching punch 122 passes through the outer circumferential surface of the pressing member 130 to cut the paper 11 to cut the line 14a. ) (See FIG. 9).

In particular, the base paper 11 is easily cut because it is made of metal powder powder, while the release paper is flexible because it is made of a resin material such as PET or PC, but is slightly bent but not cut.

A cross-sectional view of the sheet 10 in which the central hole 13 and the cutout line 14a are processed by the above process is shown in FIG. 9A and a plan view thereof is shown in FIG. 9B.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

A: sheet punching mold according to an embodiment of the present invention
100: upper mold 110: mold holder
111: cover plate 112: first plate
112a: first through hole 113: second plate
113a: second through hole 114: third plate
114a: third through hole 121: cutting punch
121a: central through hole 121b: inner circumferential surface of central through hole
121b ': Lower edge of the central aperture 121c: Indentation of the central aperture
122: punch punch 130: pressing member
130a: central hole 130c: protrusion of pressing member
141: connecting pin 142: connecting plate
150: elastic member 200: lower mold
201: punch insertion hole 202: die
202c: protrusion 10 of the die 10: sheet
11: base 11a: handle of the base
12: release paper 13: the central hall
14a: perforation

Claims (4)

As a punching mold for punching the sheet | seat 10 which consists of the release paper 12 and the base paper 11 adhering to the said release paper 12,
Pressing down while lowering the lower mold 200 and the lower mold 200, punches the central hole 13 in the seat 10 placed on the upper surface of the lower mold 200 and the periphery of the central hole 13 It is configured to include an upper mold 100 to form a cutting line 14a for cutting only the base paper 11,
A punch insertion hole 201 is formed in the center of the lower mold 200,
The upper mold 100,
A mold holder 110 movable in a direction opposite to the direction in which the lower mold 200 is located,
It is fixed to the mold holder 110 and forms a shape that fits into the punch insertion hole 201 and is partially inserted into the punch insertion hole 201 so that the center of the seat 10 is placed on the upper surface of the lower mold 200. A punch punch 122 for punching the hole 13,
The central through hole 121a is penetrated to the center portion so that the punching punch 122 is positioned therein, and the lower edge 121b 'of the central through hole 121a is fixed to the mold holder 110. Cutting punch 121 for forming a cutting line 14a for cutting only the base paper 11 of
A central through hole 130a is formed to interpolate the punch punch 122 into the central through hole 130a to be inserted into the central through hole 121a of the cutting punch 121 to cut out the punch punch 122 and the cut punch ( 121 is provided between the punches 122 when the punch punch 122 punches the center hole 13 in the sheet 10 and the cutting punch 121 forms the perforated line 14a in the base paper 11. Pressing member 130 to hold by pressing),
The pressing member 130 is provided between the upper side of the pressing member 130 and the mold holder 110 to press the pressing force of the mold holder 110 when the mold holder 110 is pressed against the lower mold 200. It is configured to include an elastic member 150 for transmitting to and at the same time an elastic force to the pressing member 130,
The pressing member 130 is a ring shape having a central through hole (130a),
Seat punching mold, characterized in that the mold holder 110 is located inside the connection member (141, 142) is further provided between the elastic member 150 and the ring-shaped pressing member (130).
The method according to claim 1,
Sheet punching mold, characterized in that the upper surface of the lower mold (200) is formed so as to protrude upwards corresponding to the pressing member 130 along the edge of the punch insertion hole (201).
delete The method according to claim 1,
Sheet punching mold, characterized in that the inner peripheral surface (121b) of the central hole (121a) of the cutting punch 121 is tapered so that the lower edge (121b ') of the central hole (121a) of the cutting punch 121 is acute.

Images