KR20160149464A - Punch Mold Having a Vertically Movable Punch - Google Patents

Punch Mold Having a Vertically Movable Punch Download PDF

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Publication number
KR20160149464A
KR20160149464A KR1020150086471A KR20150086471A KR20160149464A KR 20160149464 A KR20160149464 A KR 20160149464A KR 1020150086471 A KR1020150086471 A KR 1020150086471A KR 20150086471 A KR20150086471 A KR 20150086471A KR 20160149464 A KR20160149464 A KR 20160149464A
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KR
South Korea
Prior art keywords
punch
punching
rotating body
height
holder
Prior art date
Application number
KR1020150086471A
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Korean (ko)
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KR101833402B1 (en
Inventor
윤기철
Original Assignee
윤기철
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Publication date
Application filed by 윤기철 filed Critical 윤기철
Priority to KR1020150086471A priority Critical patent/KR101833402B1/en
Publication of KR20160149464A publication Critical patent/KR20160149464A/en
Application granted granted Critical
Publication of KR101833402B1 publication Critical patent/KR101833402B1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/26Perforating, i.e. punching holes in sheets or flat parts

Abstract

The present invention relates to a punch comprising: a plurality of punches (10) installed on an upper side of a core (C) and vertically lifted and lowered to form a plurality of slots radially in the core (C); A punch fixing plate 20 installed on the upper side of the punch 10 to vertically penetrate the punch 10 to fix the punch 10; A punch holder (40) installed on an upper surface of the punch fixing plate (20) and supporting the punch fixing plate (20); A die 80 provided at a lower portion of the punch 10 and supporting a lower end of the core C on an upper surface thereof and having a plurality of punch holes 82 formed in a concentric circle; A punch height adjusting plate 50 installed inside the punch holder 40 and accommodating a part of a plurality of punches 10 arranged in a concentric circle rotated at a predetermined angle to form a height of the punch 10 differently, The present invention relates to a punching die capable of adjusting the punch height.
According to the present invention, since the punching is sequentially performed, the punching force can be reduced as compared with a punching mold in which punching is performed all at once. This makes it possible to perform the same punching process with a low-capacity punching die without using a high-capacity punching die, thereby reducing manufacturing costs.

Description

Punch Mold Having a Vertically Movable Punch [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching die capable of adjusting the height of a punch, and more particularly, to a punching die capable of adjusting a height of a punch disposed on a concentric circle by rotating a punch height control plate.

2. Description of the Related Art Generally, a motor includes a rotor and a stator, and is a mechanism for providing a driving force by rotating the rotor by application of power.

These motors are manufactured by various methods according to their types. Among the motors of the above types, large motors used for industrial equipments and the like are generally manufactured by stamping a circular sheet on a roll steel sheet, To process the respective cores for the manufacture of the rotor and stator.

The rotor core and the stator core processed as described above are laminated under pressure to form a rotor and a stator, respectively, and then the motor is completed through the coupling between the rotor and the stator.

A conventional motor core mold is disclosed in Korean Patent Publication No. 10-0235830.

The punches installed in the molds are installed at the same height to perform the punching process.

However, when a plurality of slots are machined at a time, a stronger punching force must be provided. Therefore, a high-capacity punching die is generally required, which increases the manufacturing cost of the punching die.

In addition, when the height of the punch is varied in order to sequentially punch the plurality of slots without machining simultaneously, the punch must be completely separated from the fixed plate during the polishing of the punch so that the height of the punch is different, There is a problem that not only the repairing time is long but also the working efficiency is low.

Korean Patent Publication No. 10-0235830

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a punching die capable of adjusting the height of a punch disposed on a concentric circle, .

According to an aspect of the present invention, there is provided a punching die capable of adjusting the height of a punch according to the present invention, the punching die being provided on an upper side of a core and vertically moving up and down to form a plurality of slots radially in the core A plurality of punches;

A punch holding plate installed on the upper side of the punch and punching up and down to fix the punch; a punch holder installed on an upper surface of the punch holding plate to support the punch holding plate; And a plurality of punch holes provided in the punch holder and rotated in a predetermined angle to form a plurality of punches arranged in a concentric circle, And a punch height adjusting plate for accommodating a part of the punches to form a different height.

Wherein the punch height adjusting plate comprises a rotating body having a circular ring shape and provided inside the punch holder and supporting a plurality of upper surfaces of the punches, and a lower body formed on the lower surface of the rotating body, A plurality of stepped portions formed to be spaced apart from each other by a predetermined depth radially and spaced apart at regular intervals to receive an upper end portion of the punches and formed between the stepped portions and protruding from the stepped portions, As shown in Fig.

One side of the rotating body has a cylindrical shape and is formed to be long in the left and right direction and has a rotating bar which is screwed to one side of the rotating body to rotate the rotating body.

The rotary body is provided with a detent groove formed along a concentric circle of the rotary body and formed with a plurality of recesses in a cylindrical shape at a predetermined angle. The detent groove is provided on the upper side of the detent groove, And a stopper member inserted into the stop groove according to the rotation of the rotation body to adjust a rotation angle of the rotation body.

The punch holder may further include a manipulation hole formed on a circumferential surface of the punch holder, the manipulation hole being formed to penetrate from side to side and guiding the rotation bar to protrude to the outside.

The punching mold capable of adjusting the punch height according to the present invention has the following effects.

The present invention is characterized in that a step portion and a protruding portion are formed alternately along the concentric circle on the lower surface of the punch height adjusting plate and the punch is alternately positioned on the step portion and the protruding portion so that the punch positioned on the protruding portion And the punch located at the stepped portion is punched backward.

Accordingly, the punching force is less than that of the punching mold in which the punching is performed sequentially, and the punching is performed all at once. This makes it possible to perform the same punching process with a low-capacity punching die without using a high-capacity punching die, thereby reducing manufacturing costs.

Further, since the height of the protrusion of the punch can be changed to the same height by rotating the punch height adjusting plate when the punch is polished, and a plurality of punches can be polished at the same time, there is an advantage that the polishing time of the punch is minimized, TEk.

1 is a front sectional view showing a configuration of a preferred embodiment of a punching mold capable of adjusting the height of punches according to the present invention.
2 is a plan view showing a configuration of a preferred embodiment of a punching mold capable of adjusting the height of punches according to the present invention.
3 is an enlarged view showing a configuration of a protruded punch constituting an embodiment of the present invention.
4 is an enlarged view showing a configuration of a step portion and a punch constituting an embodiment of the present invention.
5 is a plan view showing the configuration of a punch height adjusting plate constituting an embodiment of the present invention.
6 is a plan view showing a state in which the punch height adjusting plate constituting the embodiment of the present invention is rotated.
7 is a plan view showing a state in which the height of the punch is changed by rotating the punch height adjusting plate constituting the embodiment of the present invention.
8 is a plan view showing a state in which the height of the punch is equalized by rotating the punch height adjusting plate constituting the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a punching die capable of adjusting the punch height according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front sectional view showing a configuration of a preferred embodiment of a punching mold capable of adjusting the punch height according to the present invention. FIG. 2 is a plan view showing a configuration of a punching mold according to a preferred embodiment of the present invention, FIG. 3 is an enlarged view showing the configuration of the protruded punch constituting the embodiment of the present invention, and FIG. 4 is an enlarged view showing the configuration of the step and the punch constituting the embodiment of the present invention Fig. 5 is a plan view showing the configuration of a punch height adjusting plate constituting an embodiment of the present invention, and Fig. 6 is a plan view showing a state in which a punch height adjusting plate constituting an embodiment of the present invention is rotated 7 is a plan view showing a state in which the height of the punch is changed by rotating the punch height adjusting plate constituting the embodiment of the present invention And FIG. 8 is a plan view showing a state in which the height of the punch is equalized by rotating the punch height adjusting plate constituting the embodiment of the present invention.

As shown in these figures, the punching mold capable of adjusting the punch height according to the present invention is provided on the upper side of the core (C) and includes a plurality of A punch fixing plate 20 installed above the punch 10 to vertically punch the punch 10 to fix the punch 10; A punch holder 40 installed on the upper surface of the punch 10 for supporting the punch fixture plate 20 and a lower end of the core C supported on the upper surface of the punch 10, A die 80 in which a plurality of punch holes 82 are formed on the punch holder 40 and a plurality of punches 10 disposed inside the punch holder 40 and rotated at a predetermined angle to be concentrically arranged, A punch height adjusting plate 50 and the like.

The core (C) is formed by cutting a silicon steel plate into a disk shape. The core (C) is seated on the upper surface of the die 80 to be described later and punching is performed.

A punch (10) is provided on the upper side of the core (C). The punch 10 is a general punch and its detailed description is omitted. A plurality of the punches 10 are installed concentrically at regular intervals. Here, the number of punches 10 installed is 48, and the number of punches 10 installed can be variously applied depending on the number of slots formed in the core C. The punch 10 is moved downward to form a slot in the core C.

On the upper side of the punch 10, a punch fixing plate 20 is provided. The punch fixing plate 20 is formed of a plate having a predetermined thickness, and a plurality of punch fixing holes 22 are formed concentrically. The punch 10 is inserted into and fixed to the inside of the punch fixing plate 20.

Further, the punch inserted into the punch fixing plate 20 is slidably installed in the punch fixing hole 22.

A punch fastening piece 24 is provided on the lower surface of the punch fastening plate 20. As shown in FIG. 3, the punch fastening piece 24 is made of a rectangular plate and is screwed to the lower surface of the punch fastening plate 20. The punch fixing piece 24 is inserted into a locking groove 12 formed in the outer circumferential surface of the punch 10 to prevent the punch 10 from falling downward.

A stripper (30) is installed on the lower part of the punch fixing plate (20). The stripper 30 is composed of an upper stripper 32 and a lower stripper 36. The upper stripper 32 has a disk shape, and a plate receiving groove 33 is formed on the upper surface of the upper stripper 32 so as to be recessed in a cylindrical shape. A plurality of first punch wetting holes 34 are formed concentrically in the upper stripper 32 to guide up and down movement of the punch 10 during a punching process.

An elastic member (not shown) is installed between the upper stripper 32 and the punch fastening plate 20. The elastic member is a general spring and its detailed description is omitted. The elastic member serves to elastically support the upper stripper 32 in a downward direction.

The lower stripper (36) is installed under the upper stripper (32). The lower stripper 36 is formed in a disk shape having a predetermined thickness, and a plurality of second punch wetting holes 38 are formed concentrically. The lower stripper 36 is installed at a lower portion of the upper stripper 32 and pushes down the core C moving upward along the punch 10 during a punching operation.

A punch holder (40) is provided on the upper side of the punch fastening plate (20). The punch holder 40 is formed of a disk-shaped plate having a predetermined thickness, and supports the upper surface of the punch fixing plate 20.

An operation hole 42 is formed on a side surface of the punch holder 40. The operation hole 42 is formed in a hexahedron shape on the side surface of the punch holder 40, as shown in FIG. Inside the operation hole 42, a rotating bar 60, which will be described later, is inserted and is turned to the left and right.

Inside the punch holder 40, a punch height adjusting plate 50 is provided. The punch height adjusting plate 50 includes a rotating body 52 having a circular ring shape and installed inside the punch holder 40 to support the upper surfaces of the plurality of punches 10, A plurality of stepped portions formed on the lower surface of the rotary body 52 and formed to be recessed by a predetermined depth in a radial direction with respect to the center axis of the rotary body 52 and spaced apart at a predetermined distance, And a projection 56 formed between the step 54 and protruding from the step 54 to project the punch 10 in a downward direction.

The rotating body 52 is formed of a circular ring-shaped plate material, and is installed on the upper surface of the plurality of punches 10 arranged in a concentric circle. And serves to support the upper surface of the punch 10 of the rotating body 52.

A stepped portion 54 is formed on the lower surface of the rotating body 52. 5, the stepped portions 54 are formed at regular intervals along a concentric circle in which the punches 10 are installed, and are recessed by a predetermined depth on the lower surface of the rotating body 52. As shown in FIG. The height of the punch 10, which receives a portion of the upper end of the punch 10 and protrudes downward, is changed inside the stepped portion 54.

A protrusion 56 is formed between the stepped portion 54 and the stepped portion 54. The projecting portion 56 protrudes downward from the stepped portion 54 in a downward direction.

That is, a part of the punch 10 located at the stepped portion 54 is received in the stepped portion 54, and the protruding length of the punch 10 is shortened as shown in FIG. 4, The protruding length of the punch 10 is longer than that of the punch 10 located at the stepped portion 54 as shown in FIG.

Therefore, the punch 10 disposed on the concentric circle has a protruding length shorter than that of the punch 10 located at the stepped portion 54 in accordance with the rotation of the rotating body 52, The protruding length of the punch 10 is longer than that of the punch 10 located at the stepped portion 54. [

A rotating bar (60) is installed on a side surface of the rotating body (52). As shown in FIGS. 2 to 3, the rotary bar 60 has a cylindrical shape, and a thread is formed at an end of the rotary bar 60 and is screwed to the center of the side surface of the rotary body 52. The rotary bar 60 is screwed to the side of the rotary bar 60 through an end of the operation hole 42 and the other end is projected to the outside to rotate the rotary body 52 according to an operation .

A detent groove 62 is formed on the upper surface of the rotating body 52. As shown in FIG. 3, the stop groove 62 is formed in a cylindrical shape on the upper surface of the rotating body 52. The detent grooves 62 are formed concentrically with two spaced apart from each other by a predetermined distance. A stopper member 72, which will be described later, is inserted into the stop groove 62 to adjust the rotation angle of the rotating body 52.

An upper holder 70 is provided on the upper side of the punch holder 40. The upper holder 70 is made of a flat metal plate and is fixed on the upper side of the punch holder 40. A shank (not shown) is provided above the upper holder 70, and the upper holder 70 is moved up and down by the shank to perform punching.

A stopper member 72 is provided in the upper holder 70. The stopper member 72 has a cylindrical shape and is vertically movably installed in the upper holder 70. The stopper member 72 is inserted into the stop groove 62 to fix the rotary body 52 A stopper pin 74 and an elastic body 76 formed on the upper side of the stopper pin 74 and made of an elastic material to elastically support the stopper pin 74 in a downward direction.

The stopper pin 74 has a cylindrical shape and its lower end is formed in an arc shape. The lower end of the stopper pin 74 is inserted into the stop groove 62 to fix the rotating body 52 at a predetermined angle.

That is, the stopper member 72 is provided on the upper side of the detent groove 62. When the rotating body 52 is rotated at a predetermined angle in accordance with the rotation of the rotating body 52, 74 are inserted into the detent grooves 62 to fix the rotary body 52.

 A die 80 is installed under the punch 10. 1, the die 80 is formed of an original plate having a predetermined thickness, and a punch hole 82 penetrating vertically on the same concentric circle as the punch 10 is formed. The lower surface of the core C is supported on the upper surface of the die 80 and the punch 10 is moved from the upper direction to the lower direction to punch the core C.

That is, the punch 10 is inserted into the punch hole 82 while the die 80 supports the lower end of the core C, and a slot is formed in the core C.

A die holder 84 is provided below the die 80. The die holder 84 is made of a disk having a predetermined thickness and supports the lower end of the die 80. Further, on the upper surface of the die holder 84, a discharge guide hole 86 penetrating upward and downward is formed. The die holder 84 supports the lower end of the die 80 and guides the core C cut through the discharge guide hole 86 to be discharged in a downward direction.

A lower holder 88 is provided below the die holder 84. The lower holder 88 is formed in a hexahedron shape having a larger outer diameter than the die holder 84 and supports the lower end of the die holder 84.

Hereinafter, the operation of the punching mold capable of adjusting the punch height according to the present invention will be described with reference to FIGS. 1 to 8. FIG.

First, in the punching step of forming slots in the core (C), the operator rotates the punch height adjusting plate (50) by about 4 degrees, as shown in Fig. 2, with the operator holding the rotating bar (60).

When the punch height adjusting plate 50 is rotated, the stepped portion 54 formed on the lower surface of the punch height adjusting plate 50 is rotated as shown in Fig. 7, so that 24 punches of the 48 punches 10, (10).

A stepped portion 54 and a protruding portion 56 are formed alternately along the concentric circle on the lower surface of the punching height adjusting plate 50. The punch 10 is inserted into the stepped portion 54 and the protruding portion 56, The punch 10 positioned at the protruding portion 56 is punched first and the punch 10 positioned at the stepped portion 54 is punched back.

Accordingly, the punching force is less than that of the punching mold in which the punching is performed sequentially, and the punching is performed all at once. This makes it possible to perform the same punching process with a low-capacity punching die without using a high-capacity punching die.

When the punch 10 is worn to be polished, the punch 10 is rotated to its original position as shown in FIG. 2 of the punch height adjusting plate 50.

When the punch height adjusting plate 50 is rotated in the opposite direction, the protruding portion 56 formed at the lower portion of the punch height adjusting plate 50 rotates to be positioned on the upper side of the 48 concentric punches 10 .

The stepped portion 54 and the protruding portion 56 are formed alternately along the concentric circle on the lower surface of the punch height adjusting plate 50. The stepped portion 54 is formed by the punch 10 and the punch 10, And the protruding portion 56 is located on the upper side of the punch 10. [

Therefore, the polishing operation is performed in a state where the punch 10 has the same height, so that the polishing operation of the punch can be performed all at once without detaching the punch.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

10. Punch 20. Punch fixing plate
22. Punch fixing hole 24. Punch fixing piece
30. Stripper 32. Top Stripper
36. Bottom Stripper 40. Punch Holder
50. Punch height adjusting plate 52. Rotating body
54. Stepped portion 56. Protrusion
72. Stopper member

Claims (5)

A plurality of punches (10) installed on the upper side of the core (C) and vertically raised and lowered to form a plurality of slots radially in the core (C);
A punch fixing plate 20 installed on the upper side of the punch 10 to vertically penetrate the punch 10 to fix the punch 10;
A punch holder (40) installed on an upper surface of the punch fixing plate (20) and supporting the punch fixing plate (20);
A die 80 provided at a lower portion of the punch 10 and supporting a lower end of the core C on an upper surface thereof and having a plurality of punch holes 82 formed in a concentric circle;
A punch height adjusting plate 50 installed inside the punch holder 40 and accommodating a part of a plurality of punches 10 arranged in a concentric circle rotated at a predetermined angle to form a height of the punch 10 differently, Punching punching mold with adjustable height.
The apparatus of claim 1, wherein the punch height adjusting plate (50)
A rotating body 52 having a circular ring shape and installed inside the punch holder 40 to support the upper surfaces of the plurality of punches 10;
The punch 10 is formed at a lower surface of the rotating body 52 and is formed to be recessed by a predetermined depth in a radial direction with respect to the central axis of the rotating body 52, A plurality of stepped portions (54) formed on the substrate;
And a protrusion (56) formed between the step portions (54) and protruding from the step portion (54) and projecting the punch (10) in a downward direction.
[2] The apparatus according to claim 1,
And a rotation bar (60) formed in a cylindrical shape and elongated in the right and left direction and having one end screwed to the side surface of the rotating body (52) to rotate the rotating body (52) Height adjustable punching mold.
[3] The apparatus according to claim 1, wherein on the upper surface of the rotating body (52)
Further comprising a detent groove (62) formed along a concentric circle of the rotating body (52) and formed with a plurality of recesses formed in a cylindrical shape at a predetermined angle;
A stopper pin 74 is provided at an upper side of the detent groove 62 and elastically supported in a downward direction. The stopper pin 74 is inserted into the detent groove 62 according to the rotation of the rotating body 52, And a stopper member (72) for adjusting the rotation angle of the body (52).
4. The punch holder (40) according to claim 3, wherein a circumferential surface of the punch holder (40)
The punching tool according to any one of claims 1 to 3, further comprising an operation hole (42) formed to penetrate through the right and left sides and guide the rotation bar (60) to protrude to the outside.
KR1020150086471A 2015-06-18 2015-06-18 Punch Mold Having a Vertically Movable Punch KR101833402B1 (en)

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KR1020150086471A KR101833402B1 (en) 2015-06-18 2015-06-18 Punch Mold Having a Vertically Movable Punch

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KR101833402B1 KR101833402B1 (en) 2018-02-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927444A (en) * 2018-07-28 2018-12-04 国网安徽省电力有限公司淮北供电公司 The adjustable porous hydraulic piercing press in punching position
CN111283060A (en) * 2020-03-06 2020-06-16 武义珍珍新能源科技有限公司 Automatic punching mechanism for lamp connecting plate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235830B1 (en) 1997-01-24 1999-12-15 김영조 Motor core

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235830B1 (en) 1997-01-24 1999-12-15 김영조 Motor core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927444A (en) * 2018-07-28 2018-12-04 国网安徽省电力有限公司淮北供电公司 The adjustable porous hydraulic piercing press in punching position
CN111283060A (en) * 2020-03-06 2020-06-16 武义珍珍新能源科技有限公司 Automatic punching mechanism for lamp connecting plate

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