KR20220003939A - Internal and external composite hot forming and heat treatment system - Google Patents

Internal and external composite hot forming and heat treatment system Download PDF

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KR20220003939A
KR20220003939A KR1020200082120A KR20200082120A KR20220003939A KR 20220003939 A KR20220003939 A KR 20220003939A KR 1020200082120 A KR1020200082120 A KR 1020200082120A KR 20200082120 A KR20200082120 A KR 20200082120A KR 20220003939 A KR20220003939 A KR 20220003939A
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South Korea
Prior art keywords
hot forming
heat treatment
core
outer peripheral
hot
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KR1020200082120A
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Korean (ko)
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류욱현
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류욱현
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    • 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
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/18—Forging machines working with die jaws, e.g. pivoted, movable laterally of the forging or pressing direction, e.g. for swaging
    • 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
    • B21K1/56—Making machine elements screw-threaded elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The present invention relates to an internal and external composite hot forming and heat treatment system mainly comprising a heating unit (100), a hot forming unit (200), and a cooling unit (300), in which the structure is improved to simultaneously hot-form internal and external surfaces of a material by sequentially passing through the heating unit, the hot forming unit and the cooling unit and quench the material, so as to promote mass production and, in particular, the mating timings of radially arranged outer cores are synchronized to improve hot forming quality and prevent damage to an inner core due to an eccentric load.

Description

내, 외주면 복합 열간 성형 및 열처리시스템{Internal and external composite hot forming and heat treatment system}Internal and external composite hot forming and heat treatment system

본 발명은 내, 외주면 복합 열간 성형 및 열처리시스템에 관련되며, 보다 상세하게는 히팅부, 열간성형부 및 냉각부를 단계적으로 거쳐 소재 내, 외주면을 동시에 열간성형하면서 급랭 열처리하도록 구조 개선하여 대량 생산을 도모하고, 특히, 방사형으로 배치되는 외부코어의 형합 작동시점을 동기화하여 열간 성형 품질 향상 및 편하중에 의해 내부 코어 손상을 방지할 수 있는 내, 외주면 복합 열간 성형 및 열처리시스템에 관한 것이다.The present invention relates to a composite hot forming and heat treatment system for inner and outer peripheral surfaces, and more specifically, through a heating part, a hot forming part, and a cooling part, the structure is improved so that the internal and external peripheral surfaces of the material are simultaneously hot-formed and quenched for mass production. In particular, it relates to a composite hot forming and heat treatment system for inner and outer circumferential surfaces that can improve the quality of hot forming and prevent damage to the inner core due to an eccentric load by synchronizing the timing of the forming operation of the radially arranged outer core.

통상적으로 나사결합은 건축재료나 기계부품을 고정하는 데 사용하는 기계요소로서, 절삭가공에 따른 가격 경쟁력, 재료 손실 및 생산성 향상을 위해 열간 성형공법이 널리 이용되고 있다.In general, screw coupling is a mechanical element used to fix building materials or mechanical parts, and a hot forming method is widely used to improve price competitiveness, material loss and productivity due to cutting.

예컨대, 열간 성형공법은 소재를 가열한 상태로 소정의 외력을 가하여 형틀의 형상으로 성형하는 단계를 이루어지므로 제조공정의 다분화로 생산성 향상에 한계가 따랐다.For example, in the hot forming method, since a predetermined external force is applied to a heated material to form a mold shape, there is a limit to productivity improvement due to the diversification of the manufacturing process.

이에 종래에 개시된 특허등록 10-0316435호에서, 콘크리트보강용 이형봉강의 원통몸체상에 리브와 다수의 마디를 가진 콘크리트보강용 이형봉강의 적어도 하나의 이형봉강 연결단부를 상온에서 스웨이징하여 상기 연결단부의 최대직경이 상기 이형봉강의 원통몸체의 직경과 같거나, 약간 크게 또는 가공도에 따라 원통몸체직경보다 약간 작게 형성되도록 하는 스웨이징 공정과, 상기 스웨이징 공정을 거친 이형봉강의 적어도 하나의 연결단부의 외주면에 스웨이징 직경에 준하는 나사부를 전조 성형공정으로 이루어지는 기술이 선 제시된 바 있다.Accordingly, in Patent Registration No. 10-0316435 disclosed in the prior art, at least one deformed bar connection end of a deformed bar for concrete reinforcement having ribs and a plurality of nodes on the cylindrical body of the deformed bar for concrete reinforcement is swaged at room temperature to make the connection. A swaging process such that the maximum diameter of the end is the same as, slightly larger, or slightly smaller than the diameter of the cylindrical body according to the degree of processing, and at least one of the deformed bars that have undergone the swaging process A technology in which a thread corresponding to the diameter of swaging on the outer circumferential surface of the connecting end is formed through a roll forming process has been previously presented.

그러나, 상기 종래기술은 금속 조직을 파괴시키지 않고 가공할 수 있도록 하여 이 연결부에 대한 기계적 강도를 향상시키려는 것이나, 제조공정이 다분화되어 생선성 향상에 한계가 따르고, 내, 외주면 복합 성형이 불가능하며, 특히 나사부의 나선형 라인 가공정밀도 저하로 현장 조립불량율이 증가되는 폐단이 따랐다.However, the prior art is to improve the mechanical strength of this connection part by making it possible to process it without destroying the metal structure, but the manufacturing process is diversified, so there is a limit to the productivity improvement, and it is impossible to compound the inner and outer peripheral surfaces, , in particular, the loss of on-site assembly defects increased due to the decrease in the processing precision of the spiral line of the threaded part.

KR 10-0316435 B1 (2001.11.21.)KR 10-0316435 B1 (2001.11.21.)

이에 따라 본 발명은 상기한 문제점을 해결하기 위해 착안 된 것으로서, 히팅부, 열간성형부 및 냉각부를 단계적으로 거쳐 소재 내, 외주면을 동시에 열간성형하면서 급랭 열처리하도록 구조 개선하여 대량 생산을 도모하고, 특히, 방사형으로 배치되는 외부코어의 형합 작동시점을 동기화하여 열간 성형 품질 향상 및 편하중에 의해 내부 코어 손상을 방지할 수 있는 내, 외주면 복합 열간 성형 및 열처리시스템을 제공하는 것에 그 목적이 있다.Accordingly, the present invention was conceived to solve the above problems, and through the heating part, the hot forming part and the cooling part, the structure is improved so that the inner and outer peripheral surfaces of the material are simultaneously hot formed and quenched heat treatment to promote mass production, especially The purpose of this is to provide a composite hot forming and heat treatment system for inner and outer peripheral surfaces that can improve the quality of hot forming and prevent damage to the inner core due to unbalanced load by synchronizing the timing of the forming operation of the radially arranged outer core.

이러한 목적을 달성하기 위해 본 발명의 특징은, 관통홀(12)이 형성되는 소재(10)를 가열하도록 구비되는 히팅부(100); 상기 히팅부(100)에 의해 가열된 소재(10)의 내, 외주면을 동시 열간 성형하도록 내, 외부코어(220)(240)가 구비되는 열간성형부(200); 상기 열간성형부(200)에 의해 열간 성형된 소재를 냉각하도록 구비되는 냉각부(300)를 포함하는 것을 특징으로 한다.In order to achieve this object, a feature of the present invention is a heating unit 100 provided to heat the material 10 in which the through-hole 12 is formed; a hot forming unit 200 provided with inner and outer cores 220 and 240 to simultaneously hot form the inner and outer peripheral surfaces of the material 10 heated by the heating unit 100; It characterized in that it includes a cooling unit 300 provided to cool the material hot formed by the hot forming unit (200).

이때, 상기 열간성형부(200)는, 소재(10) 관통홀(12) 내부로 삽입되어 암나사부(10a)를 성형하도록 수나사부(222)가 형성되고 구동부(224)에 의해 회전 가능하게 구비되는 내부코어(220)와, 상기 내부코어(220)를 중심으로 방사형으로 배치되고, 소재(10) 외주면을 가압하여 각면을 성형하도록 펀칭날(242)이 형성되는 복수의 외부코어(240)를 포함하고, 상기 외부코어(240) 가압력에 의해 소재(10) 외주면에 각면(10b)이 형성됨과 동시에 소재(10) 내주면이 수나사부(222)에 가압되어 암나사부(10a)가 형성되며, 상기 내부코어(220)는 소재(10) 내, 외주면이 열간 성형된 후, 구동부(224)에 의해 회전되어 피치이동에 의해 소재(10)로부터 분리되도록 구비되는 것을 특징으로 한다.At this time, the hot forming part 200 is inserted into the through hole 12 of the material 10 to form the female threaded part 10a so that the male threaded part 222 is formed and is rotatably provided by the driving part 224 . a plurality of outer cores 240 disposed radially around the inner core 220 and formed with punching blades 242 to form each surface by pressing the outer circumferential surface of the material 10; Including, each surface 10b is formed on the outer circumferential surface of the material 10 by the pressing force of the outer core 240 and at the same time the inner circumferential surface of the material 10 is pressed against the male screw portion 222 to form the female screw portion 10a, The inner core 220 is characterized in that after the inner and outer peripheral surfaces of the material 10 are hot-formed, it is rotated by the driving unit 224 to be separated from the material 10 by a pitch movement.

또한, 상기 내부코어(220)는 서로 대향하도록 한 쌍으로 구비되어 정, 역방향 수나사부(222)(222')가 형성되며, 상기 내부코어(220)는 구동부(232)에 의해 가이드레일(230)을 타고 직선 이동되면서 내부코어(220) 간에 거리가 조절되도록 구비되는 것을 특징으로 한다.In addition, the inner core 220 is provided in a pair to face each other to form forward and reverse male thread portions 222 and 222 ′, and the inner core 220 is driven by a driving unit 232 to form a guide rail 230 . ) while moving in a straight line, it is characterized in that it is provided so that the distance between the inner cores 220 is adjusted.

또한, 상기 외부코어(240)의 형합력이 작용하여 1차 열간 성형 후 형개되면, 이웃하는 외부코어(240)의 형합 경계부에 대응하는 소재(10) 성형부분이 외부코어(240) 내부영역으로 위치이동되도록 외부코어(240) 또는 소재(10)가 소정의 각도(a)로 선회 작동 후, 외부코어(240)의 형합력에 의해 2차 열간 성형되도록 구비되는 것을 특징으로 한다.In addition, when the mold-opening after the first hot forming due to the action of the clamping force of the outer core 240, the forming part of the material 10 corresponding to the mating boundary of the neighboring outer core 240 is moved to the inner region of the outer core 240. After the outer core 240 or the material 10 is rotated at a predetermined angle (a) so as to be moved, it is characterized in that it is provided for secondary hot forming by the clamping force of the outer core 240 .

또한, 상기 외부코어(240)는 연계구동수단(250)에 의해 형개, 형합 시점이 서로 동기화되고, 상기 연계구동수단(250)은 내부코어(220)와 동심원 상에 배치되는 피니언기어(251)와, 피니언기어(251)에 치합되면서 각각의 외부코어(240)에 연결되는 래크(252)로 구성되거나, 상기 복수의 외부코어(240)에 형성되는 키(254)와, 키(254)와 맞물리도록 나선형레일(255a)이 형성되는 회전판(255)으로 이루어지거나, 상기 복수의 외부코어(240)가 연결되어 방사형으로 확장되는 복수의 콜렛암(256)과, 콜렛암(256)을 수용한 상태로 가압하여 콜렛암(256) 간에 간격을 확장, 축소하는 그립퍼(257)로 이루어지는 것을 특징으로 한다.In addition, the outer core 240 is synchronized with each other at mold opening and mating timing by the linked driving means 250 , and the linked driving means 250 is a pinion gear 251 disposed on a concentric circle with the inner core 220 . and a rack 252 connected to each of the outer cores 240 while being meshed with the pinion gear 251, or a key 254 formed on the plurality of outer cores 240, and a key 254 and It consists of a rotating plate 255 on which a spiral rail 255a is formed to be engaged, or a plurality of collet arms 256 radially extended by connecting the plurality of outer cores 240, and the collet arms 256 are accommodated. It is characterized in that it consists of a gripper 257 that expands and contracts the gap between the collet arms 256 by pressing in the state.

또한, 상기 냉각부(300)는, 열간성형부(200)에 의해 내, 외주면이 열간 성형된 소재(10)가 투입되어 급랭 열처리되도록 냉각수가 저장되는 열처리조(320)와, 열처리조(320) 바닥에서 상향 경사각으로 설치되어 열처리된 소재를 열처리조(320) 외부로 배출하는 경사형 컨베이어(340)를 포함하는 것을 특징으로 한다.In addition, the cooling unit 300 includes a heat treatment tank 320 and a heat treatment tank 320 in which the cooling water is stored so that the material 10 hot-formed on the inner and outer peripheral surfaces by the hot forming unit 200 is input and quenched heat treatment. ) It is installed at an upward inclination angle from the floor and characterized in that it includes an inclined conveyor 340 for discharging the heat-treated material to the outside of the heat treatment tank 320 .

이상의 구성 및 작용에 의하면, 본 발명은 히팅부, 열간성형부 및 냉각부를 단계적으로 거쳐 소재 내, 외주면을 동시에 열간성형하면서 급랭 열처리하도록 구조 개선하여 대량 생산을 도모하고, 특히, 방사형으로 배치되는 외부코어의 형합 작동시점을 동기화하여 열간 성형 품질 향상 및 편하중에 의해 내부 코어 손상을 방지할 수 있는 효과가 있다.According to the above configuration and action, the present invention promotes mass production by improving the structure to rapidly heat heat treatment while simultaneously hot forming the inner and outer peripheral surfaces of the material through the heating unit, the hot forming unit, and the cooling unit step by step, and in particular, the outside arranged radially It has the effect of improving the quality of hot forming by synchronizing the timing of the forming operation of the core and preventing damage to the inner core due to an eccentric load.

도 1은 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템을 전체적으로 나타내는 정면도.
도 2는 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템을 전체적으로 나타내는 평면도.
도 3 내지 도 5는 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템의 작동상태를 나타내는 구성도.
도 6은 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템의 1, 2차 열간 성형에 따른 열간 성형 방향 전환 상태를 나타내는 구성도.
도 7은 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템의 연계구동수단을 나타내는 구성도.
도 8은 본 발명의 일실시예에 따른 내, 외주면 복합 열간 성형 및 열처리시스템의 연계구동수단의 작동상태를 나타내는 구성도.1 is a front view showing the overall inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.
Figure 2 is a plan view showing the overall inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.
3 to 5 is a configuration diagram showing the operating state of the inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.
6 is a configuration diagram showing a hot forming direction change state according to the primary and secondary hot forming of the inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.
7 is a configuration diagram showing a connection driving means of the inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.
Figure 8 is a configuration diagram showing the operating state of the connection drive means of the inner and outer peripheral surface composite hot forming and heat treatment system according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 내, 외주면 복합 열간 성형 및 열처리시스템에 관련되며, 이는 히팅부, 열간성형부 및 냉각부를 단계적으로 거쳐 소재 내, 외주면을 동시에 열간성형하면서 급랭 열처리하도록 구조 개선하여 대량 생산을 도모하고, 특히, 방사형으로 배치되는 외부코어의 형합 작동시점을 동기화하여 열간 성형 품질 향상 및 편하중에 의해 내부 코어 손상을 방지할 수 있도록 히팅부(100), 열간성형부(200), 냉각부(300)를 주요구성으로 한다.The present invention relates to a composite hot forming and heat treatment system for inner and outer circumferential surfaces, which through a heating section, a hot forming section, and a cooling section, to achieve mass production by improving the structure so that the inner and outer circumferential surfaces are simultaneously hot-formed and quenched heat treatment, In particular, the heating part 100, the hot forming part 200, and the cooling part 300 are provided so as to improve the quality of hot forming and prevent damage to the inner core due to an unbalanced load by synchronizing the timing of the radially arranged outer cores. as the main component.

본 발명에 따른 히팅부(100)는 관통홀(12)이 형성되는 소재(10)를 가열하도록 구비된다. 히팅부(100)는 고주파 히팅장치로 형성되어, 소재를 8~12초 사이에 750~1200℃까지 가열하도록 구비된다.The heating unit 100 according to the present invention is provided to heat the material 10 in which the through-hole 12 is formed. The heating unit 100 is formed by a high-frequency heating device, and is provided to heat the material to 750 to 1200° C. in 8 to 12 seconds.

그리고, 상기 히팅부(100)로 공급되는 소재는 자동공급라인을 통하여 각개로 정렬공급되는바, 여기서 자동공급라인은 도 1 내지 도 2와 같이, 소재(10)가 무작위로 저장되는 호퍼(1)와, 상면에 경사면이 형성되는 복수의 셔틀이 계단식으로 배치되어 교대로 상하 이동되면서 호퍼에 무작위로 저장된 소재(10)를 각개로 공급하는 직립셔틀(2)과, 직립셔틀(2)을 통하여 각개공급되는 소재(10)를 횡방향으로 정렬 공급하는 피딩기(3)로 구성된다.And, the material supplied to the heating unit 100 is individually supplied through an automatic supply line, where the automatic supply line is a hopper 1 in which the material 10 is randomly stored, as shown in FIGS. 1 to 2 . ) and a plurality of shuttles having an inclined surface on the upper surface are arranged in a stepwise manner and alternately moved up and down while supplying the materials 10 randomly stored in the hopper individually (2) and through the upright shuttle (2) It is composed of a feeding machine (3) that aligns and supplies the material (10) to be individually supplied in the transverse direction.

한편, 상기 히팅부(100)를 통과한 소재(10)는 도 1의 확대도와 같이 일단에 'ㄴ'자형 받침대가 구비되는 터닝셔틀(4)에 의해 종방향으로 방향전환 상태로 대기되면, 로봇팔, 이송클램프를 포하는 이송수단에 의해 클램핑되어 후술하는 열간성형부(200)로 로딩되고, 열간성형부(200)는 터닝셔틀(4) 양측에 한 쌍으로 구비되어 양방향으로 교대로 투입하게 된다.On the other hand, when the material 10 passing through the heating unit 100 is waiting in a state of changing direction in the longitudinal direction by the turning shuttle 4 having an 'L'-shaped pedestal at one end as shown in the enlarged view of FIG. 1 , the robot It is clamped by a transfer means including an arm and a transfer clamp and loaded into a hot forming unit 200 to be described later, and the hot forming unit 200 is provided as a pair on both sides of the turning shuttle 4 to alternately input in both directions. do.

또한, 본 발명에 따른 열간성형부(200)는 상기 히팅부(100)에 의해 가열된 소재(10)의 내, 외주면을 동시 열간 성형하도록 내, 외부코어(220)(240)가 구비된다.In addition, the hot forming unit 200 according to the present invention is provided with inner and outer cores 220 and 240 to simultaneously hot form the inner and outer peripheral surfaces of the material 10 heated by the heating unit 100 .

이때, 상기 열간성형부(200)는, 소재(10) 관통홀(12) 내부로 삽입되어 암나사부(10a)를 성형하도록 수나사부(222)가 형성되고 구동부(224)에 의해 회전 가능하게 구비되는 내부코어(220)와, 상기 내부코어(220)를 중심으로 방사형으로 배치되고, 소재(10) 외주면을 가압하여 각면을 성형하도록 펀칭날(242)이 형성되는 복수의 외부코어(240)를 포함한다. 이때 상기 내부코어(220)는 열간 성형 중에 소재(10)와 부착되는 현상을 방지하기 위해 이형제를 도포하게 된다.At this time, the hot forming part 200 is inserted into the through hole 12 of the material 10 to form the female threaded part 10a so that the male threaded part 222 is formed and is rotatably provided by the driving part 224 . a plurality of outer cores 240 disposed radially around the inner core 220 and formed with punching blades 242 to form each surface by pressing the outer circumferential surface of the material 10; include At this time, a release agent is applied to the inner core 220 to prevent adhesion to the material 10 during hot forming.

도 3 내지 도 5에서, 상기 외부코어(240) 가압력에 의해 소재(10) 외주면에 각면(10b)이 형성됨과 동시에 소재(10) 내주면이 수나사부(222)에 가압되어 암나사부(10a)가 형성된다.3 to 5, each surface 10b is formed on the outer circumferential surface of the material 10 by the pressing force of the outer core 240, and at the same time, the inner circumferential surface of the material 10 is pressed against the male screw portion 222, so that the female screw portion 10a is is formed

그리고, 상기 내부코어(220)는 소재(10) 내, 외주면이 열간 성형된 후, 구동부(224)에 의해 회전되어 피치이동에 의해 소재(10)로부터 분리되도록 구비된다.In addition, the inner core 220 is provided so that the inner and outer peripheral surfaces of the material 10 are hot-formed, and then rotated by the driving unit 224 to be separated from the material 10 by a pitch movement.

또한, 상기 내부코어(220)는 서로 대향하도록 한 쌍으로 구비되어 정, 역방향 수나사부(222)(222')가 형성되며, 상기 내부코어(220)는 구동부(232)에 의해 가이드레일(230)을 타고 직선 이동되면서 내부코어(220) 간에 거리가 조절되도록 구비된다.In addition, the inner core 220 is provided in a pair to face each other to form forward and reverse male thread portions 222 and 222 ′, and the inner core 220 is driven by a driving unit 232 to form a guide rail 230 . ) while moving in a straight line, the distance between the inner cores 220 is adjusted.

이처럼, 상기 내부코어(220)는 서로 대향하도록 한 쌍으로 구비되어 소재(10) 양방향으로 삽입되어 정, 역방향 암나사부(10a)를 동시에 성형하고, 정, 역방향 암나사부(10a) 성형이 완료된 후에는 정, 역방향 수나사부(222)(222')가 상호 역방향으로 회전되면서 가이드레일(230)을 타고 직선 이동되어 간단하게 분리된다.In this way, the inner core 220 is provided as a pair to face each other and inserted into the material 10 in both directions to form the forward and reverse female threaded parts 10a at the same time, and after the forward and reverse female threaded parts 10a molding is completed. is moved in a straight line on the guide rail 230 while the forward and reverse male screw parts 222 and 222' are rotated in opposite directions to each other and are simply separated.

도 6에서, 상기 외부코어(240)의 형합력이 작용하여 1차 열간 성형 후 형개되면, 이웃하는 외부코어(240)의 형합 경계부에 대응하는 소재(10) 성형부분이 외부코어(240) 내부영역으로 위치이동되도록 외부코어(240) 또는 소재(10)가 소정의 각도(a)로 선회 작동 후, 외부코어(240)의 형합력에 의해 2차 열간 성형되도록 구비된다. 도 6 (a)는 외부코어(240)가 60° 선회작동되는 상태를 도시하고, 도 6 (b)는 소재(10)가 60°선회작동되는 상태를 나타낸다.In FIG. 6 , when the mold-opening after the first hot forming due to the clamping force of the outer core 240 acts, the forming part of the material 10 corresponding to the mating boundary of the neighboring outer core 240 is formed inside the outer core 240 . After the outer core 240 or the material 10 is rotated at a predetermined angle (a) so as to be moved to the region, it is provided to be secondary hot formed by the clamping force of the outer core 240 . Figure 6 (a) shows a state in which the outer core 240 is rotated by 60 °, Figure 6 (b) shows a state in which the material 10 is pivoted by 60 °.

이에 상기 열간 성형시 외부코어(240)의 형합력이 미흡한 외부코어(240)의 형합 경계부분이 재차 가압성형되어 소재(10) 내주면에 미성형된 암나사부(10a)는 물론 외주면에 미성형된 각면(10b)이 정밀 성형되는 이점이 있다.Accordingly, during the hot forming, the mating boundary portion of the outer core 240, which has insufficient clamping force of the outer core 240, is press-molded again, so that the unformed female thread portion 10a on the inner peripheral surface of the material 10 as well as the unmolded on the outer peripheral surface There is an advantage that each surface 10b is precisely molded.

도 7에서, 상기 외부코어(240)는 연계구동수단(250)에 의해 형개, 형합 시점이 서로 동기화된다.In FIG. 7 , in the external core 240 , the mold opening and the mold matching timing are synchronized with each other by the linked driving means 250 .

도 7 (a)는 상기 연계구동수단(250)은 내부코어(220)와 동심원상에 배치되는 피니언기어(251)와, 피니언기어(251)에 치합되면서 각각의 외부코어(240)에 연결되는 래크(252)로 구성된 상태를 나타내고, 도 7 (b)는 상기 복수의 외부코어(240)에 형성되는 키(254)와, 키(254)와 맞물리도록 나선형레일(255a)이 형성되는 회전판(255)으로 이루어지는 상태를 도시하며, 도 7 (c)는 상기 복수의 외부코어(240)가 연결되어 방사형으로 확장되는 복수의 콜렛암(256)과, 콜렛암(256)을 수용한 상태로 가압하여 콜렛암(256) 간에 간격을 확장, 축소하는 그립퍼(257)로 이루어지는 상태를 도시한다.7 (a) shows the linkage driving means 250 is a pinion gear 251 disposed on a concentric circle with the inner core 220, and each of the outer cores 240 while meshing with the pinion gear 251. It shows a state composed of a rack 252, and FIG. 7 (b) is a key 254 formed on the plurality of outer cores 240, and a rotating plate on which a spiral rail 255a is formed to engage the key 254 ( 255), and FIG. 7 (c) shows a plurality of collet arms 256 radially extended by connecting the plurality of outer cores 240, and pressurized in a state accommodating the collet arms 256. Thus, the state of the grippers 257 extending and reducing the gap between the collet arms 256 is shown.

이처럼 상기 연계구동수단(250)에 의해 방사형으로 배치되는 복수의 외부코어(240)의 형합 작동시점이 동기화되어 열간 성형 품질 향상 및 편하중에 의해 내부 코어(220) 손상이 방지되는 이점이 있다.As such, there is an advantage in that the mating operation timing of the plurality of outer cores 240 radially arranged by the linkage driving means 250 is synchronized, thereby improving the quality of hot forming and preventing damage to the inner core 220 due to an unbalanced load.

또한, 본 발명에 따른 냉각부(300)는 상기 열간성형부(200)에 의해 열간 성형된 소재를 냉각하도록 구비된다.In addition, the cooling unit 300 according to the present invention is provided to cool the material hot formed by the hot forming unit 200 .

이때, 상기 냉각부(300)는, 열간성형부(200)에 의해 내, 외주면이 열간 성형된 소재(10)가 투입되어 급랭 열처리되도록 냉각수가 저장되는 열처리조(320)와, 열처리조(320) 바닥에서 상향 경사각으로 설치되어 열처리된 소재를 열처리조(320) 외부로 배출하는 경사형 컨베이어(340)를 포함한다. 그리고 상기 열처리조(320) 내에 저장된 냉각수는 칠러에 의해 소정의 온도로 냉각 관리된다.At this time, the cooling unit 300 includes a heat treatment tank 320 and a heat treatment tank 320 in which cooling water is stored so that the material 10 hot-formed on the inner and outer peripheral surfaces by the hot forming unit 200 is put in and quenched heat treatment. ) is installed at an upward inclination angle from the floor and includes an inclined conveyor 340 for discharging the heat-treated material to the outside of the heat treatment tank 320 . The cooling water stored in the heat treatment tank 320 is cooled and managed to a predetermined temperature by the chiller.

이에 상기 열간성형부(200)를 거친 소재(10)는 로봇팔 또는 이송클램프에 의해 취출되어 열처리조(320)로 낙하되어 급랭 열처리되고, 열처리된 소재(10)는 경사형 컨베이어(340)를 타고 이동되면서 냉각처리 후 별도의 수거함으로 자동 배출되는바, 즉, 히팅부(100), 열간성형부(200) 및 냉각부(300)를 단계적으로 거쳐 소재(10) 내, 외주면을 동시에 열간성형하면서 급랭 열처리하도록 구조 개선하여 대량 생산을 도모한다.Accordingly, the material 10 that has passed through the hot forming unit 200 is taken out by a robot arm or a transfer clamp, dropped into a heat treatment tank 320 and subjected to a rapid cooling heat treatment, and the heat treated material 10 is an inclined conveyor 340 . The bar is automatically discharged to a separate collection box after cooling treatment while riding, that is, the inner and outer peripheral surfaces of the material 10 are simultaneously hot-formed through the heating unit 100, the hot forming unit 200, and the cooling unit 300 step by step. Structural improvement to quench heat treatment while promoting mass production.

100: 히팅부 200: 열간성형부
300: 냉각부100: heating part 200: hot forming part
300: cooling unit

Claims (6)

관통홀(12)이 형성되는 소재(10)를 가열하도록 구비되는 히팅부(100);
상기 히팅부(100)에 의해 가열된 소재(10)의 내, 외주면을 동시 열간 성형하도록 내, 외부코어(220)(240)가 구비되는 열간성형부(200); 및
상기 열간성형부(200)에 의해 열간 성형된 소재를 냉각하도록 구비되는 냉각부(300)를 포함하는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.a heating unit 100 provided to heat the material 10 in which the through-hole 12 is formed;
a hot forming unit 200 provided with inner and outer cores 220 and 240 to simultaneously hot form the inner and outer peripheral surfaces of the material 10 heated by the heating unit 100; and
The inner and outer peripheral surface composite hot forming and heat treatment system, characterized in that it comprises a cooling unit (300) provided to cool the material hot formed by the hot forming unit (200). 제 1항에 있어서,
상기 열간성형부(200)는, 소재(10) 관통홀(12) 내부로 삽입되어 암나사부(10a)를 성형하도록 수나사부(222)가 형성되고 구동부(224)에 의해 회전 가능하게 구비되는 내부코어(220)와, 상기 내부코어(220)를 중심으로 방사형으로 배치되고, 소재(10) 외주면을 가압하여 각면을 성형하도록 펀칭날(242)이 형성되는 복수의 외부코어(240)를 포함하고, 상기 외부코어(240) 가압력에 의해 소재(10) 외주면에 각면(10b)이 형성됨과 동시에 소재(10) 내주면이 수나사부(222)에 가압되어 암나사부(10a)가 형성되며, 상기 내부코어(220)는 소재(10) 내, 외주면이 열간 성형된 후, 구동부(224)에 의해 회전되어 피치이동에 의해 소재(10)로부터 분리되도록 구비되는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.The method of claim 1,
The hot forming part 200 is inserted into the material 10 through-hole 12 to form the female threaded part 10a so that the male threaded part 222 is formed and the inside is provided rotatably by the driving part 224 . A core 220 and a plurality of outer cores 240 disposed radially around the inner core 220 and having punching blades 242 formed thereon to press the outer circumferential surface of the material 10 to form each surface, and , by the pressing force of the outer core 240, each surface 10b is formed on the outer circumferential surface of the material 10, and at the same time, the inner circumferential surface of the material 10 is pressed against the male screw portion 222 to form the female screw portion 10a, and the inner core Inner and outer peripheral surface composite hot forming and heat treatment, characterized in that 220 is provided so that the inner and outer peripheral surfaces of the material 10 are hot-formed, then rotated by the driving unit 224 and separated from the material 10 by pitch movement system. 제 2항에 있어서,
상기 내부코어(220)는 서로 대향하도록 한 쌍으로 구비되어 정, 역방향 수나사부(222)(222')가 형성되며, 상기 내부코어(220)는 구동부(232)에 의해 가이드레일(230)을 타고 직선 이동되면서 내부코어(220) 간에 거리가 조절되도록 구비되는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.3. The method of claim 2,
The inner core 220 is provided in a pair to face each other to form forward and reverse male thread portions 222 and 222 ′, and the inner core 220 has a guide rail 230 by a driving unit 232 . The inner and outer peripheral surface composite hot forming and heat treatment system, characterized in that provided so that the distance between the inner core 220 is adjusted while riding in a straight line. 제 2항 또는 제 3항에 있어서,
상기 외부코어(240)의 형합력이 작용하여 1차 열간 성형 후 형개되면, 이웃하는 외부코어(240)의 형합 경계부에 대응하는 소재(10) 성형부분이 외부코어(240) 내부영역으로 위치이동되도록 외부코어(240) 또는 소재(10)가 소정의 각도(a)로 선회 작동 후, 외부코어(240)의 형합력에 의해 2차 열간 성형되도록 구비되는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.4. The method of claim 2 or 3,
When the mold is opened after the first hot forming due to the action of the clamping force of the outer core 240 , the molded part of the material 10 corresponding to the mating boundary of the neighboring outer core 240 is moved to the inner region of the outer core 240 . Composite hot forming of the inner and outer peripheral surfaces, characterized in that after the outer core 240 or the material 10 is rotated at a predetermined angle (a) to be secondarily hot formed by the clamping force of the outer core 240 and heat treatment systems. 제 2항 또는 제 3항에 있어서,
상기 외부코어(240)는 연계구동수단(250)에 의해 형개, 형합 시점이 서로 동기화되고, 상기 연계구동수단(250)은 내부코어(220)와 동심원상에 배치되는 피니언기어(251)와, 피니언기어(251)에 치합되면서 각각의 외부코어(240)에 연결되는 래크(252)로 구성되거나,
상기 복수의 외부코어(240)에 형성되는 키(254)와, 키(254)와 맞물리도록 나선형레일(255a)이 형성되는 회전판(255)으로 이루어지거나,
상기 복수의 외부코어(240)가 연결되어 방사형으로 확장되는 복수의 콜렛암(256)과, 콜렛암(256)을 수용한 상태로 가압하여 콜렛암(256) 간에 간격을 확장, 축소하는 그립퍼(257)로 이루어지는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.4. The method of claim 2 or 3,
The external core 240 is synchronized with each other at mold opening and mold matching timing by the linked driving means 250, and the linked driving means 250 is a pinion gear 251 disposed concentrically with the internal core 220 and a pinion gear 251, It consists of a rack 252 connected to each outer core 240 while being meshed with the pinion gear 251, or
It consists of a key 254 formed on the plurality of outer cores 240 and a rotating plate 255 on which a spiral rail 255a is formed to engage the key 254,
A plurality of collet arms 256 to which the plurality of outer cores 240 are connected and radially extended, and a gripper for expanding and reducing the gap between the collet arms 256 by pressing the collet arms 256 in a state containing them ( 257), characterized in that the inner and outer peripheral surface composite hot forming and heat treatment system. 제 1항에 있어서,
상기 냉각부(300)는, 열간성형부(200)에 의해 내, 외주면이 열간 성형된 소재(10)가 투입되어 급랭 열처리되도록 냉각수가 저장되는 열처리조(320)와, 열처리조(320) 바닥에서 상향 경사각으로 설치되어 열처리된 소재를 열처리조(320) 외부로 배출하는 경사형 컨베이어(340)를 포함하는 것을 특징으로 하는 내, 외주면 복합 열간 성형 및 열처리시스템.The method of claim 1,
The cooling unit 300 includes a heat treatment tank 320 in which cooling water is stored so that the material 10 whose inner and outer peripheral surfaces are hot-formed by the hot forming unit 200 is put in and quenched heat treatment, and the bottom of the heat treatment tank 320 . The inner and outer peripheral surface composite hot forming and heat treatment system, characterized in that it includes an inclined conveyor (340) installed at an upward inclination angle in the heat treatment tank (320) to discharge the heat-treated material to the outside.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316435B1 (en) 1998-03-31 2001-12-12 정경옥 Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure of connecting deformed bar

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316435B1 (en) 1998-03-31 2001-12-12 정경옥 Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure of connecting deformed bar

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