KR101689477B1 - Pin-forming device for a switch - Google Patents

Pin-forming device for a switch Download PDF

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Publication number
KR101689477B1
KR101689477B1 KR1020150118614A KR20150118614A KR101689477B1 KR 101689477 B1 KR101689477 B1 KR 101689477B1 KR 1020150118614 A KR1020150118614 A KR 1020150118614A KR 20150118614 A KR20150118614 A KR 20150118614A KR 101689477 B1 KR101689477 B1 KR 101689477B1
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KR
South Korea
Prior art keywords
pin
workpiece
switch
primary
mold
Prior art date
Application number
KR1020150118614A
Other languages
Korean (ko)
Inventor
이승구
Original Assignee
이승구
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이승구 filed Critical 이승구
Priority to KR1020150118614A priority Critical patent/KR101689477B1/en
Application granted granted Critical
Publication of KR101689477B1 publication Critical patent/KR101689477B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B21J5/027—Trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The present invention relates to a device to form a pin for a switch and, more specifically, relates to a device to form a pin for a switch capable of improving productivity to reduce manufacturing costs by forming a forging punch with a diameter different from that of the pin, and a circular forging punch capable of forming the pin to be hemispherical in order to form a central part of the pin for the switch to be stepped; and one end of the pin for the switch to be hemispherical, processing the pin for the switch in a cold forging method while the cut pin is clamped by a holder to increase a manufacturing speed unlike a forging method, and capable of improving a quality of the pin by increasing accuracy. According to this, the device to form the pin for the switch comprises: a cutting unit wherein a clamp opened and closed while moving on a guide holder in order to cut an object being supplied with a cutting piece formed in a movable bar, which is formed in the guide holder to be moved in a left and a right side by a camshaft, and having a clamping groove in a central part clamping the cut object with the cutting piece elastically installed in the movable bar; a front mold formed to allow a front part of the object to be inserted while the object cut by the cutting unit and then transferred is clamped; a first mold unit having a first mold in order to firstly process a rear part of the object inserted into the front mold with the first forging punch; and a second mold unit having a second mold formed on an upper side of the first mold unit in order to secondarily process the object processed by the first mold unit with the second forging punch.

Description

[0001] The present invention relates to a pin-forming device for a switch,

The present invention relates to a switch pin forming apparatus, and more particularly, to a pin pin forming apparatus for a switch, in which a center of a switch pin is formed in a stepped shape, and a forging punch having a diameter different from that of the pin, By forming a circular forging punch that can be formed and clamping the cut pin to the holder, the switch pin is processed by the cold forging operation, so that the production speed can be improved differently from the rolling method and the productivity can be improved, And to improve the quality of the pin.

Generally, a switch is a contact and a mechanism that operates it.

These switches have many different schemes and structures, ranging from simple hand-operated devices to electromagnetic-powered devices.

Among these switches, the rocker switch is a push-operated on / off switch. When one side of the switch is pressed, the other side protrudes. Thus, a pin is formed on the switch so that the pin presses the contact.

In the method of forming such a switch pin, a workpiece having a predetermined diameter is moved by moving a moving flat plate dice to a stationary flat plate dice, and rotating the workpiece.

As a typical example of molding the rolling method as described above, there has been proposed a connecting bolt rolling machine for furniture, No. 295779.

However, the above-mentioned furniture connection bolt precursor machine is produced by rolling the workpiece in order to prevent crush grooves in the workpiece. However, if the same shape as the switch pin is produced, the productivity of the switch pin is lowered There is a problem that the manufacturing cost is increased and the precision is deteriorated and the quality of the fin is lowered.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method of manufacturing a switch pin by cold forging in a state in which a cut pin is clamped in a holder, Which is capable of reducing the manufacturing cost and improving the precision by improving the quality of the fin.

In order to achieve the above-mentioned object, the present invention relates to a cutting tool for cutting a workpiece, which is formed on a guide holder so as to be moved leftward and rightward by a camshaft, cut by a cutting piece formed with a clamping groove at the center thereof, A cutter which is provided on the movable bar with a clamp which is opened and closed while being moved in the guide holder so as to be clamped with the cutter; a front mold which is formed so that the front of the workpiece is inserted in a state where the workpiece cut and moved by the cutter is clamped; A first die formed so as to be subjected to a first machining operation by rearwardly cutting the workpiece inserted into the die by one cutting jaw punch and a second die forming part formed on the upper side of the first die to perform a second machining of the workpiece processed by the primary die, And forming a second die-shaped portion formed on the second die.

A lower portion of the movable bar is provided with an upward protrusion that can be brought into contact with the guide holder when the movable bar is moved downward. When the movable bar is moved, one side of the movable bar is lifted to open the clamp, And when the contact is released, one side of the moving bar is lowered by the restoring spring formed on the upper side of the moving bar, and the clamp is brought into close contact with the cutting piece to clamp the workpiece.

In the primary die portion, a blocking jaw punch having a forging hole into which a rear portion of the workpiece is inserted is formed in the primary molding holder to form a ring at the center of the workpiece located in the front die, Wherein the pin pin forming device is formed to be interposed between the car mats.

In order to process the rear side of the first processed workpiece in the front mold, the secondary mold portion is provided with a second blocking punch formed with a forged pin hole into which the forging pin is inserted, And a pin pin forming device for a switch, the pin pin forming device comprising:

 As described above, by manufacturing the switch pin by cold forging in a state where the cut pin is clamped to the holder, the production speed can be improved unlike the rolling method, so that the productivity can be improved and the manufacturing cost can be reduced. And the quality can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes and modifications may be made by those skilled in the art.

1 is a perspective view illustrating a pin forming apparatus for a switch according to the present invention,
2 is a perspective view for explaining a state in which the fin end of the fin forming apparatus for a switch according to the present invention is operated,
Fig. 3 is a perspective view of the pin forming apparatus for a switch according to the present invention,
4 is a perspective view showing a first die-shaped portion of the apparatus for forming a pin for a switch according to the present invention,
5 is an exploded perspective view showing a primary mold part of the apparatus for forming a pin for a switch according to the present invention,
6 is a cross-sectional view showing a primary mold section of the apparatus for forming a pin for a switch according to the present invention,
7 is a perspective view showing a secondary mold part of the apparatus for forming a pin for a switch according to the present invention,
8 is an exploded perspective view showing a secondary mold part of the pin forming apparatus for a switch according to the present invention,
9 is a cross-sectional view of a secondary mold part of a pin forming apparatus for a switch according to the present invention,
10 is a perspective view showing a sequence of a primary die of the apparatus for forming a pin for a switch according to the present invention,
11 is a perspective view showing a sequence of a secondary die of the apparatus for forming a pin for a switch according to the present invention,
12 is a front view showing an operating state of a cutout portion of the apparatus for forming a pin for a switch according to the present invention,
Fig. 13 is an explanatory view showing the sequence of the switch pins produced through the apparatus for forming pins for a switch according to the present invention.

In order to fully understand the advantages of the present invention and the advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings, which show preferred embodiments of the present invention, and the contents of the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to specific examples of the present invention. The following examples are provided to further illustrate the present invention, but the technical scope of the present invention is not limited thereto.

(Example)

FIG. 2 is a perspective view illustrating a state in which the fin end of the switch pin forming apparatus according to the present invention is operated, and FIG. 3 is a perspective view of the pin fin forming apparatus according to the present invention. Fig. 3 is a perspective view of a pin forming apparatus for a switch; Fig.

As shown therein, the apparatus for forming a pin for a switch according to the present invention includes a cutting portion 10 capable of cutting a workpiece 14, a front mold (not shown) for fixing the front of the workpiece 14 cut by the cutting portion 10 And a second die portion 40 for machining an end portion of the primary die workpiece 14. The first die die portion 20 forms the back of the workpiece 14 fixed to the front die 20, .

The cutter 10 is formed in the guide holder 11 so as to be moved left and right by a cam shaft (not shown) formed in the molding apparatus and the cutter 13 formed on the move bar 12 A clamp 15 which is opened and closed while being moved in the guide holder 11 is clamped on the movable bar 12 so as to cut the workpiece 14 supplied by the clamping member 14 and clamp the cut workpiece 14 with the cutting piece 13.

A downward protrusion 16 capable of coming into contact with the guide holder 11 when the movable bar 12 is moved downward is formed below the movable bar 12 of the cutout 10 so that the movable bar 12 Is raised so that the clamp 15 is lifted up from the cutting piece 13 and opened.

When the rising projection 16 is released from contact with the guide holder 11, one side of the moving bar 12 is lowered by the restoring spring S formed on the upper side of the moving bar 12, So that the workpiece 14 is clamped.

In order to clamp the workpiece 14, the cutting piece 13 is formed with a clamping groove 18 so that a workpiece is inserted into the center of the cutting blade.

The front mold 20 is formed so that the front of the workpiece 14 is inserted while the workpiece 14 cut and moved by the cutting portion 10 is clamped.

The rear side of the workpiece inserted into the front mold 20 is processed through the primary die 30.

As shown in FIGS. 4 to 6, the primary metal mold 30 forms a forging hole 32 in the center of the first cutoff punch 31 so as to be primarily processed by the first cutoff punch 31.

The primary die portion 30 is formed by forming a forging hole 32 into which a rear portion of the workpiece 14 is inserted to form a ring 14 'in the center of the workpiece 14 located in the front die 20 The punch 31 is built in the primary molding holder 33 and the spring S is interposed between the primary mounds 34 formed at the back of the primary molding holder 33. [

The forging hole 32 is communicated with the communication hole 35 formed in the one blocking punch 31.

The end portion of the workpiece 14 processed through the primary die portion 30 is processed through the secondary die portion 40.

The secondary die 40 as described above is formed on the upper side of the primary die 30 so that the workpiece 14 is secondarily machined by the two cutoff punches 41 in which the forged pinhole 42 is formed.

7 to 9, the forging pin 40 is provided with a forging pin 43 on the forged pinhole 42 so as to process the rear side of the first processed workpiece 14 in the front mold 20, The inserted two cutoff punches 41 are incorporated in the secondary molding holder 44 and the spring S is interposed between the secondary molding pins 45 at the rear of the secondary molding holder 44.

The operation and effect of the present invention constructed as described above will be described below.

12, when the wire supplied to the switch pin forming apparatus is cut through the cut pieces 13 of the cut portions 10, the work 14 is cut into the clamping grooves 18 of the cut pieces 13 The clamp 15 is lifted up while overcoming the elasticity of the spring S while the lifting projection 16 formed on the lower side of the moving bar 12 contacts the guide holder 11. [

In this state, the workpiece 14 inserted in the clamping groove 18 is moved to the front mold 20 while the rising projection 16 of the moving bar 12 moves in the guide holder 11, So that the workpiece 14 is clamped between the clamping groove 18 of the cutting piece 13 and the clamp 15.

10 (a) to 10 (c), primary machining is performed through the primary die portion 30 in a state where the front side of the workpiece 14 is inserted and fixed to the front die 20.

The primary mold portion 30 for primary processing the workpiece 14 is formed below the punching table 1 of the molding machine and forged punches the rear portion of the workpiece 14.

The primary die portion 30 is formed by inserting a workpiece 14 into a forging hole 32 having a diameter smaller than the diameter of the workpiece 14 at the center of the primary die 32, 14 ').

At this time, a spring S is formed between the first mounter pieces 34 so that the first blocking punch 31 can be forged while absorbing an impact when forging, and the forging hole 32 is inserted into the inserted workpiece 14 The pressure of the air which is hermetically sealed by the forging hole 32 is relieved through the communication hole 35 communicating with the forging hole 32.

11 (a) to 11 (c) so that the rear cutter of the workpiece 14 of the first-processed switch pin is circular.

The secondary machining is performed by forging the undercut of the workpiece 14 on the two cutoff punches 41 of the secondary cutout 40 formed on the primary cutout 30 of the punching bar 1. [

Such secondary processing is performed by inserting the rear side of the workpiece 14 into the forged pinhole 42 formed in the two cutoff punches 41 and forging the end of the workpiece 14 into the forged pinhole 42 The end of the workpiece 14 is formed like a groove shape of the forging pin 43 and formed into a circular shape.

At this time, the blocking cut punch 41 is absorbed by the spring S formed between the secondary cut pieces 45 so as to be forged while absorbing the impact when the blocking cut punch 41 is forged.

As shown in FIG. 13, the workpiece 14 produced by such a forging operation forms a ring 14 'in the center by one cutoff operation and cuts the end of the workpiece 14 formed with the ring 14' It is possible to improve the productivity by reducing the defect rate and speeding up the production speed.

10: Cutting section 11: Guide holder
12: Moving bar 13: Cutting piece
14: workpiece 14 ': ring
15: Clamp 16: Ascent projection
18: clamping groove 20: front mold
30: One-piece mold 31: 1 Blocking punch
32: Forging hole 33: Primary molding holder
34: primary masonry piece 35: communication hole
40: second die portion 41: 2 cutoff punch
42: forged pinhole 43: forged pin
44: Second molding holder 45: Secondary piece

Claims (6)

A cutter 10 for cutting the workpiece 14 and a front mold 20 formed to insert the front of the workpiece 14 in a clamped state of the workpiece 14 cut and moved by the cutter 10, , A primary mold (30) formed so as to be subjected to primary machining by the one blocking jaw punch (31) behind the workpiece inserted into the front mold (20), a secondary machining In the switch pin forming apparatus constituted by the female mold portion (40)
The cutter 10 includes a guide bar 11 formed on the guide holder 11 and having a downwardly protruding raised protrusion 16 which can be brought into contact with the guide holder 11 on the lower side so as to be moved laterally by the camshaft, A clamp 15 which is opened and closed while being moved in the guide holder 11 so as to cut the workpiece 14 supplied by the cutter piece 13 formed on the bar 12 and clamp the cut workpiece 14 with the cutter piece 13 When the movable bar 12 is moved upward, the clamp 15 is lifted at the same time as the movable bar 12 is lifted and opened at the cutting piece 13, One side of the movable bar 12 is lowered by the restoring spring S formed above the movable bar 12 when the contact with the holder 11 is released and the clamp 15 is brought into close contact with the cutting piece 13, (14) is clamped, and the workpiece (14) processed by the primary die (30) is secondarily cut by the two cutoff punches (41) (40) formed on the upper side of the primary die (30). delete The primary die portion 30 has a forging hole 32 into which the rear of the workpiece 14 is inserted to form a ring 14 'in the center of the workpiece 14 located in the front die 20 Wherein the first blocker punch 31 is formed in the primary molding holder 33 and the spring S is interposed between the primary blocks 34 formed on the rear side of the primary molding holder 33 Pin forming device for switch. The forging pin (40) according to claim 1 or 2, wherein the forging pin (40) is provided with a forbidden pin (43) inserted into the forged pinhole (42) for machining the rear side of the workpiece Characterized in that the punch (41) is built in the secondary molding holder (44) and the spring (S) is interposed between the secondary molding pins (45) at the rear of the secondary molding holder (44) . The apparatus according to claim 1, wherein the cutting piece (13) is formed with a clamping groove (18) so that a workpiece is inserted into the center of the cutting blade. 4. The apparatus according to claim 3, wherein a communication hole (35) communicating with the forging hole (32) is formed in a rear outer diameter portion of the one blocking punch (31) of the primary die (30) .
KR1020150118614A 2015-08-24 2015-08-24 Pin-forming device for a switch KR101689477B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150118614A KR101689477B1 (en) 2015-08-24 2015-08-24 Pin-forming device for a switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150118614A KR101689477B1 (en) 2015-08-24 2015-08-24 Pin-forming device for a switch

Publications (1)

Publication Number Publication Date
KR101689477B1 true KR101689477B1 (en) 2017-01-02

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KR1020150118614A KR101689477B1 (en) 2015-08-24 2015-08-24 Pin-forming device for a switch

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970061396A (en) * 1996-02-29 1997-09-12 정길남 Heading machine
KR20110027068A (en) * 2009-09-09 2011-03-16 송은교 A anomaly pipe making installation and making way by heading machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970061396A (en) * 1996-02-29 1997-09-12 정길남 Heading machine
KR20110027068A (en) * 2009-09-09 2011-03-16 송은교 A anomaly pipe making installation and making way by heading machine

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