EP3466560A1

EP3466560A1 - Cold forging former apparatus with redirecting function of shaped object

Info

Publication number: EP3466560A1
Application number: EP17803060.7A
Authority: EP
Inventors: Jong Won Choi
Original assignee: Dae Han Corp Co Ltd
Current assignee: Dae Han Corp Co Ltd
Priority date: 2016-05-26
Filing date: 2017-05-24
Publication date: 2019-04-10
Anticipated expiration: 2037-05-24
Also published as: CN109070186B; CN109070186A; EP3466560B1; WO2017204541A1; KR101712957B1; EP3466560A4; JP2019511369A; JP6599045B2

Abstract

A cold forging former apparatus with a redirecting function of a shaped object is disclosed. The present invention includes: a main mold part including a first guide, a guide slope, an ejector pin, and a second guide; and a punch mold part having a punch pin. While a shaped object is put into the main mold part horizontally through the first guide by the punch pin and is then vertically erected by sliding on the guide slope, the ejector pin starts to move toward a vertical inlet/outlet portion, places the shaped object on a support and an ejector pin top, and guides the shaped object to the vertical inlet/outlet portion.

Description

Technical Field

The present invention relates to a cold forging former apparatus with a redirecting function of a shaped object and, more particularly, to a cold forging former apparatus with a redirecting function of a shaped object, the apparatus being able to reduce working processes and increase productivity efficiency by quickly vertically erecting a horizontally laid shaped object.

Background Art

In general, forging is a process that makes a solid metallic material in a predetermined shape using a mechanical method such as striking or pressing. Forging is classified into hot forging that is performed at a temperature over a recrystallization temperature of a material, warm forging that is performed at the recrystallization temperature, and cold forging that is performed under the recrystallization temperature.
Of the types of forging, cold forging is used for various industrial machines due to high productivity, and particularly, it is an important process that is necessary in the automotive industry. In cold forging, metal flow occurs on the outer shape of a forged product and a fibrous structure is formed, so strength and durability are high and a loss of material is low. In most cases, the loss is 10% or less of the weight of the material, so the manufacturing cost is low in comparison to the product. Further, mass production is performed by pressing, so productivity is high and products with high precision can be produced in a great quantity. Accordingly, equipment called a former is used in most processes.
However, according to a process of manufacturing a shaped object using a cold forging former apparatus described above, in the related art, a worker directly manually redirect a shaped object or there is a need for a specific reprocessing after the entire process, so the working process takes long time. Further, the process speed is low, so there is a problem with productivity efficiency.
(Patent Document 1) Korean Patent Application Publication No. 10-2008-0089700

Disclosure

Technical Problem

The present invention has been made in an effort to solve the problems and an object of the present invention is to provide a cold forging former apparatus with a redirecting function, the apparatus being able to quickly vertically erect a horizontally laid shaped object.

Technical Solution

In order to achieve the objects, the present invention provides a cold forging former apparatus with a redirecting function of a shaped object, the cold forging former apparatus including: a main mold part including a first guide, a guide slope, an ejector pin, and a second guide; and a punch mold part having a punch pin, wherein while a shaped object is put into the main mold part horizontally through the first guide by the punch pin and is then vertically erected by sliding on the guide slope, the ejector pin moves toward a vertical inlet/outlet portion and vertically erects and guides the shaped object to the vertical inlet/outlet portion.
The main mold part may include a mold frame fixed in a mold inlet by a mold frame fixing portion, the mold frame may include a first mold, a second mold, the ejector pin, and a third mold, and the first guide, the second guide, and the guide slope may be formed inside the first mold.
The punch mold may include a punch mold fixed in a punch mold inlet by a punch mold fixing portion, and the punch pin, and the shaped object may be moved through the first guide by horizontal movement of the punch pin and a shaped object bottom may be moved along the guide slope.
The ejector pin may include a knock plate, a knock base, a support, and a connecting rod, and the connecting rod may allow the ejector pin to be operated left and right through connecting holes.
An ejector pin top of the ejector pin and a shaped object side may be formed in the same shape, and the shaped object may be placed and moved on the support.
An extending guide groove extending the second guide is formed on the main mold part, and the length of the shaped object may be larger than the sum of the lengths of the first guide and the second guide.

Advantageous Effects

A cold forging former apparatus with a redirecting function of a shaped object of the present invention includes: a main mold part including a first guide, a guide slope, an ejector pin, and a second guide; and a punch mold part having a punch pin. While a shaped object is put into the main mold part horizontally through the first guide by the punch pin and is then vertically erected by sliding on the guide slope, the ejector pin starts to move toward a vertical inlet/outlet portion, places the shaped object on a support and an ejector pin top, and guides the shaped object to the vertical inlet/outlet portion.
In the related art, a worker has to manually vertically erect a horizontally laid shaped object, but according to the present invention, the cold forging former apparatus with a redirecting function of a shaped object redirects a horizontally laid shaped object to quickly vertically erect the shaped object. Therefore, the manufacturing time is considerably reduced, so productivity is improved and the manufacturing cost is decreased.

Description of Drawings

FIG. 1 is a perspective view showing the entire configuration of a molding apparatus having a redirecting mold according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing the entire configuration of an apparatus being able to redirect a shaped object according to the first embodiment of the present invention.
FIG. 3 is a perspective view showing in detail the apparatus being able to redirect a shaped object according to the first embodiment of the present invention.
FIG. 4 is a vertical cross-sectional view showing in detail the apparatus being able to redirect a shaped object according to the first embodiment of the present invention.
FIG. 5 is a perspective view enlarging a vertical inlet/outlet portion of the apparatus being able to redirect a shaped object shown in FIG. 4.
FIGS. 6 to 9 are vertical cross-sectional views showing the operation order of the apparatus being able to redirect a shaped object according to the first embodiment of the present invention.
FIG. 10 is a vertical cross-sectional view showing in detail an apparatus being able to redirect a shaped object according to the second embodiment of the present invention.

Mode for Invention

Embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily achieve the present invention. Unless specifically defined, terminologies used herein have the same meanings as the common meanings of terminologies that those skilled in the art understand. If a terminology used herein conflicts with the common meaning of the terminology, it follows definition used herein, and like reference numerals indicate like components herein.
In cold forging former apparatuses with a redirecting function of a shaped object according to the first and second embodiments, the term shaped object' means an object that is manufactured by a cold forging former equipment. The shaped object may have a column shape with a round top or may have a bar shape, that is, it may have various shapes.
Further, in cold forging former apparatuses with a redirecting function of a shaped object according to the first and second embodiments, the term 'width of a shaped object' means the narrow portion of the shaped object and the term 'length of a shaped object' means the long portion of the shaped object.
Furthermore, the direction parallel with the ground is defined as a 'horizontal direction' and the direction perpendicular to the ground is defined as a 'vertical direction', but even if a shaped object is slightly inclined due to the slope of a floor on which the shaped object is placed, it may be considered as the horizontal direction, and even if the shaped object is slightly inclined from the vertical direction, it may be considered as the vertical direction.

(First Embodiment)

A redirecting mold 20 according to the first embodiment of the present invention includes: a mold frame 300 including a first guide 312, a guide slope 313, an ejector pin 330, and a second guide 315; a main mold part 100 fixing the mold frame 300; a punch mold 400 including a punch pin 410; and a punch mold part 200 fixing the punch mold 400.
FIG. 1 is a perspective view showing the entire configuration of a molding apparatus having a redirecting mold according to the first embodiment of the present invention. As shown in the figure, a molding apparatus 10 includes the main mold part 100 on which the redirecting mold 20 is disposed, and the punch mold part 200 on which the punch mold 400 is disposed.
The main mold part 100 is disposed in any one of a mold set and includes the mold frame 300 vertically erecting a horizontally laid shaped object 500.
The mold set 1 is divided into a process A of machining a horizontally laid shaped object and a process B of machining a vertically erected shaped object when a worker machines a shaped object 500 in a desired shape. The redirecting mold 20 may be disposed to follow a process order by a worker or may be disposed for a single process in the molding apparatus 10.
A punch mold set 2 includes the punch mold part 200 helping a horizontally laid shaped object 50 enter the mold set 1.
FIG. 2 is a perspective view showing the entire configuration of an apparatus being able to redirect a shaped object according to the first embodiment of the present invention. As shown in the figure, the mold includes the mold frame 300 being able to change the shaped object 500 from the horizontal direction to the vertical direction, the main mold part 100 fixing the mold frame 300, and the punch mold part 200 on which the punch pin 410 is disposed.
The mold frame 300 is designed to be fixed in a mold inlet 110 of the main mold part 100 by a mold frame fixing portion 360 and includes a first mold 310, a second mold 320, an ejector pin 330, and a third mold 340. The shaped object 500 is put into the mold frame 300, is horizontally laid, is vertically redirected, and is then discharged out of the mold frame 300.
The punch mold 400 is designed to be fixed in a punch mold inlet 210 of the punch mold part 200 by a punch mold fixing portion 420 and includes a punch pin 410 that pushes the shaped object 500 into the mold frame 300.
FIG. 3 is a perspective view showing in detail the apparatus being able to redirect a shaped object according to the first embodiment of the present invention. As shown in the figure, the mold frame 300 includes the first mold 310 in which the shaped object 500 is put through a vertical inlet/outlet portion 314, the second mold 320 in which the ejector pin 330 is moved through an ejector fixing portion 321, and the third mold 340 in which a connecting rod 334 of the ejector pin 330 moves the ejector pin 300 to the left and right through a connecting hole 341.
The first mold 310 is disposed in the mold frame 300 and has the first guide 312, the second guide 315, and the guide slope 313.
The first guide 312 is a space disposed at a side of the upper portion of the first mold 310 and is a passage through which the horizontally laid shaped object 500 is put inside.
The second guide 315 is a space disposed at a side of the lower portion of the first mold 310 and is a passage for discharging the vertically erected shaped object 500 through the vertical inlet/outlet portion 314.
The vertical inlet/outlet portion 314 is an inlet/outlet portion that is disposed at a side of a first mold front 311 and through which the shaped object 500 horizontally put inside is vertically erected and then discharged.
The ejector pint 330 includes a knock plate 331, a knock base 332, a support 333, and the connecting rod 334. The ejector pint 330 is disposed inside the second mold 320 and helps the shaped object 500, which slides on the guide slope 313 by moving left and right through the ejector fixing portion 321, be vertically erected.
The knock plate 331 is disposed lengthwise with respect to the ejector fixing portion 321 and a side of the knock plate 331 and the knock base 332 are connected to be moved left and right in the ejector fixing portion 321.
An ejector pin top 335 is disposed at a side of the knock plate 331 and may be designed in the same shape as that of a shaped object side 550.
The support 333 is disposed at the lower end of the ejector pin top 335 and is designed to support a shaped object bottom 540.
The third mold 340 is disposed inside the mold frame 300 and has a plurality of connecting holes 341 allowing the connecting rod 334 of the ejector pin 330 to move left and right. The connecting rod 334 of the ejector pin 330 is moved left and right through the connecting holes 341.
FIG. 4 is a vertical cross-sectional view showing in detail the apparatus being able to redirect a shaped object according to the first embodiment of the present invention. As shown in the figure, the guide slope 313 is disposed inside the first mold 310 and is a passage that allows the horizontally laid shaped object 500 to be put inside through the first guide 312 by the punch pin 410 and allows the shaped object bottom 540 to slide on the guide slope 313 such that the shaped object is vertically erected.
FIG. 5 is a perspective view enlarging a vertical inlet/outlet portion of the apparatus being able to redirect a shaped object shown in FIG. 4. As shown in the figure, the first mold 310 has the first guide 312 in which the horizontally laid shaped object 500 is put inside, the guide slope 313 allowing the shaped object bottom 540 horizontally laid to vertically slide, and the vertical inlet/outlet portion 314 through which the vertically erected shaped object 500 is discharged through the first guide 312 and the second guide 315 by the ejector pin top 335.
The operation order of the redirecting mold 20 in the cold forging former apparatus with a redirecting function of a shaped object of the present invention is described hereafter with reference to FIGS. 6 to 9.
A horizontally laid shaped object 500 is delivered to the redirecting mold 20 by tongs 600 attached to the molding apparatus 10. The horizontally laid shaped object 500 is positioned at the vertical inlet/outlet portion 314 of the first mold front 311 and the shaped object top 530 is pressed by the punch pin 410, whereby the shaped object is moved along the first guide 312 through the vertical inlet/outlet portion 314. The moved shaped object 500 is moved by horizontal movement of the punch pin 410, so the shaped object bottom 540 comes in contact with the guide slope 313. The shaped object bottom 540 slides on the guide slope 313, and in this process, the ejector pint 330 disposed inside the ejector fixing portion 321 horizontally moves toward the vertical inlet/outlet portion 314. The shaped object 500 erected by the guide slope 313 is completely vertically erected by the ejector pin 330 and then placed on the support 333 and the ejector pint 330 is moved toward the vertical inlet/outlet portion 314, thereby discharging the shaped object 500. The discharged shape object 500 is moved to the next process by the tongs 600.

(Second Embodiment)

In the second embodiment of the present invention, an extending guide groove 120 is formed at the lower end of the mold inlet 110 of the main mold part 100, as shown in FIG. 1, so that a shaped object 500 can be smoothly redirected even if the shaped object 500 is longer than the sum of the lengths of the first guide 312 and the second guide 315.
The extending guide 120 is supposed to be formed deeper than the value obtained by subtracting the sum of the lengths of the first guide 312 and the second guide 315 from the length of the shaped object 500. Accordingly, a horizontally laid shaped object 500 can be vertically erected using the guide slope 313 and the extending guide groove 120. Further, when the erected shaped object 500 is completely vertically erected by the ejector pint 330 and is then placed on the support 333, the elector pin 330 moves toward the vertical inlet/outlet portion 314 and discharges the shaped object 500 without a problem.
In this case, the length of the ejector pin 330 is obviously increased in consideration of the depth of the extending guide groove 120.
A redirecting mold 20 according to the second embodiment of the present invention includes: a mold frame 300 including a first guide 312, a guide slope 313, an ejector pin 330, and a second guide 315; a main mold part 100 fixing the mold frame 300; a punch mold 400 including a punch pin 410; a punch mold part 200 fixing the punch mold 400; and an extending guide groove 120 that is formed when the length of a shaped object 500 the same as or larger than the sum of the lengths of the first guide 312 and the second guide 315.
The components of the redirection mold 20 according to the second embodiment of the present invention are arranged in the same manner as that of the components shown in the vertical cross-sectional view of the apparatus being able to redirect a shaped object of FIG. 4 according to the first embodiment of the present invention, and the redirection mold 20 of the second embodiment has the same operation order as the operation of the redirecting mold 20 of FIGS. 6 to 9 according to the first embodiment of the present invention. Accordingly, the components and the operation order of the redirecting mold 20 according to the second embodiment of the present invention are not described in detail.
FIG. 10 is a vertical cross-sectional view showing in detail an apparatus being able to redirect a shaped object according to the second embodiment of the present invention. As described above, when the length of the shaped object 500 is the same as or larger than the sum of the lengths of the first guide 312 and the second guide 315, the knock plate 331 is designed in the same shape as the shaped object side 550 and is designed such that the length thereof is the same as or larger than the length of the shaped object.
The extending guide groove 120 is designed on the main mold part 100 to extend the second guide 315 and the depth of the extending guide groove 120 is designed to be the same as or larger than the length of the shaped object 500. Accordingly, the shaped object 500 is vertically erected and then discharged through the vertical inlet/outlet portion 314.

The first and second embodiments of a cold forging former apparatus with a redirecting function of a shaped object are only examples and it would be understood by those skilled in the art that the various modified and equivalent embodiments can be achieved from the first and second embodiments. Accordingly, it would be understood that the present invention is not limited to the configurations stated in the specification. Therefore, the technical protective region of the present invention should be determined by the scope described in claims. Further, it should be understood that the present invention includes the spirit of the present invention defined by claims and all modifications, equivalents, and replacements within the spirit.

<Description of the Reference Numerals in the Drawings>

1: Mold set	2: Punch mold set
10: Molding apparatus	20: Redirecting mold
100: Main mold part
110: Mold inlet
120: Extending guide groove
200: Punch mold part
210: Punch mold inlet
300: Mold frame
310: First mold	311: First mold front
312: First guide	313: Guide slope
314: Vertical inlet/outlet portion
315: Second guide
320: Second mold
321: Ejector fixing portion
322: Ejector inlet/outlet portion
330: Ejector pin (KO PIN)	331: Knock plate
332: Knock base	333: Support
334: Connecting rod	335: Ejector pin top
340: Third mold	341: Connecting hole
350: Mold frame inlet
360: Mold frame fixing portion
400: Punch mold
410: Punch pin	420: Punch mold fixing portion
500: Shaped object
510: Shaped object head
520: Shaped object shank
530: Shaped object top
540: Shaped object bottom
550: Shaped object side
600: Tongs
A: Process of horizontally laid shaped object
B: Process of vertically erected shaped object

Claims

A cold forging former apparatus with a redirecting function of a shaped object, the cold forging former apparatus comprising:
a main mold part (100) including a first guide (312), a guide slope (313), an ejector pin (33), and a second guide (315); and

a punch mold part (200) having a punch pin (410),

wherein while a shaped object (500) is put into the main mold part (100) horizontally through the first guide (312) by the punch pin (410) and is then vertically erected by sliding on the guide slope (313), the ejector pin (330) moves toward a vertical inlet/outlet portion (314) and vertically erects and guides the shaped object (500) to the vertical inlet/outlet portion (314).
The cold forging former apparatus of claim 1, wherein the main mold part (100) includes a mold frame (300) fixed in a mold inlet (110) by a mold frame fixing portion (360),
the mold frame (300) includes a first mold (310), a second mold (320), the ejector pin (330), and a third mold (340), and

the first guide (312), the second guide (315), and the guide slope (313) are formed inside the first mold (310).
The cold forging former apparatus of claim 1, wherein the punch mold part (200) includes a punch mold (400) fixed in a punch mold inlet (210) by a punch mold fixing portion (420), and the punch pin (410), and
the shaped object (500) is moved through the first guide (312) by horizontal movement of the punch pin (410) and a shaped object bottom (540) is moved along the guide slope (313), whereby the shaped object is redirected.
The cold forging former apparatus of any one of claims 1 and 2, wherein the ejector pin (330) includes a knock plate (331), a knock base (332), a support (333), and a connecting rod (334), and
the connecting rod (334) allows the ejector pin (330) to be operated through connecting holes (341).
The cold forging former apparatus of claim 4, wherein an ejector pin top (335) of the ejector pin (330) and a shaped object side (550) are formed in the same shape, and the shaped object (500) is placed and moved on the support (333).
The cold forging former apparatus of any one of claims 1 to 3, wherein an extending guide groove (120) extending lengthwise downward from the second guide (315) is formed on the main mold part (100), and a length of the shaped object is larger than the sum of lengthwise lengths of the first guide (312) and the second guide (315).