KR100352518B1 - Concreet segment - Google Patents

Concreet segment Download PDF

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Publication number
KR100352518B1
KR100352518B1 KR1019990060073A KR19990060073A KR100352518B1 KR 100352518 B1 KR100352518 B1 KR 100352518B1 KR 1019990060073 A KR1019990060073 A KR 1019990060073A KR 19990060073 A KR19990060073 A KR 19990060073A KR 100352518 B1 KR100352518 B1 KR 100352518B1
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KR
South Korea
Prior art keywords
segment
bolt
fitted
fixing
long
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KR1019990060073A
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Korean (ko)
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KR20000012730A (en
Inventor
한송본
한원철
Original Assignee
동용길
한원철
한송본
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Priority to KR1019990060073A priority Critical patent/KR100352518B1/en
Publication of KR20000012730A publication Critical patent/KR20000012730A/en
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Publication of KR100352518B1 publication Critical patent/KR100352518B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/30—Centrifugal moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/80—Moulds adapted to centrifugal or rotational moulding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement

Abstract

본 발명은 지하에 구축되는 터널(예; 지하철,전력구,통신구,하수도,등) 원통형 구조물을 구성하는 다분할세그멘트 및 그 제조 방법에 관한것이다. 형태가 설계에따라 서로 다른 세그멘트 (1)(2)(3)(4)내에 양단이 나선부를 가진 긴볼트(5)를 존재시키고 긴볼트와 다른쪽 긴볼트를 긴너트로 연결하여 터널의 길이방향으로 조립할수 있게한 것과 세그멘트에 홈(9)(13)을 형성하고 이에 연결편(10)을 끼워 볼트(12)로 고정하여 세그멘트의 원방향으로 조립할수있게한 다분활 세그멘트를 제공케한것과, 환체(21)의 홈(22)에 캡(23)을 끼우면서 발포연질합성수지관(6)과 위치고정와셔(24) 위치조정와셔(24')가 끼워진 긴볼트(5)의 양단을 고정하면서 형틀 커버(25)와 연결된 환체(21)를 볼트너트로 고정하고 원방향으로는 커버(25)의 고정간(27)에서 끼워진 볼트(29)에 지지관(30)과 캡(31)을 이용하여 내부 고정편(32)을 정착시킨 다음에 이들을 회전 시키며 적절한 배합의 콘크리트를 주입하여 원심력으로 세그멘트를 성형, 양생시킨후 체결된 각부를 풀어서 세그멘트를 얻어내는 다분할 세그멘트의 제조방법The present invention relates to a multi-segment segment constituting a cylindrical structure (for example, subway, electric power, communication, sewage, etc.) cylindrical structure to be built underground and its manufacturing method. Depending on the design, the length of the tunnel is provided by the existence of long bolts 5 having spiral ends at both ends in different segments (1) (2) (3) (4) and connecting the long bolts and the other long bolts with long nuts. And a groove (9) and (13) formed in the segment and the connecting piece (10) is fitted therein to fix the bolt (12) to provide a multi-segment segment that can be assembled in the direction of the segment. While fixing the cap 23 into the groove 22 of the ring 21, both ends of the elongated bolt (5) in which the flexible flexible resin tube (6) and the position fixing washer (24) and the position adjusting washer (24 ') are fitted are fixed. While fixing the annular body 21 connected to the mold cover 25 with the bolt nut, the support tube 30 and the cap 31 are attached to the bolt 29 fitted in the fixing section 27 of the cover 25 in the circumferential direction. After fixing the inner fixing piece (32) by using them to rotate and injecting the appropriate mix of concrete to form the segment by centrifugal force, Method of manufacturing a multi-segment to the each part obtained by solving that the segment was concluded

Description

다분할 세그멘트 및 그 제조 방법{CONCREET SEGMENT}Multisegment segment and its manufacturing method {CONCREET SEGMENT}

본 발명은 지하철의 터널,통신구,또는 전력구와 같이 원통형 시설물을 구성하는 다분할 세그멘트 및 그 제조 방법에 관한 것이다.The present invention relates to a multi-segment segment constituting a cylindrical facility, such as a tunnel, a communication port, or a power tool of a subway, and a manufacturing method thereof.

종래 다분할 세그멘트의 구성중 진동식 제조에서는 볼트와 너트로 체결토록 된 것은 별도의 볼트 박스가 설치 되어야 하므로 제조 작업에 문제가 있었으며 구조상 문제점을 같고 있어 취급에 많은 불편을 야기하였으며 또 긴볼트를 사용하는 경우에는 별도의 긴볼트 공을 설치하여야 하므로 제조공정에 문제점이 있으며 조립 작업중에도 문제가 빈번히 발생하며 세그멘트간에 정밀도가 떨어지는 결과가 발생하였다.In the conventional vibratory manufacturing of multi-segmented segments, the bolts and nuts were fastened to a separate bolt box, so there was a problem in manufacturing work and the structural problems were the same, resulting in many inconveniences in handling and using long bolts. In this case, there is a problem in the manufacturing process because a separate long bolt ball must be installed, and problems occur frequently during assembly work, resulting in a drop in precision between segments.

제조 방법에 있어서는 본 발명의 출원인이 선출원한 특허공개번호 제 96-13594호에 기재된 원심력을 이용한 제조 장치가 있어 고품질의 다분할 세그멘트를 용이하게 제작할수 있는 기술은 있었으나 세그멘트 내에 긴볼트를 삽입한 상태로 제조하는데는 다른 기술이 요구 되는 것이었다.In the manufacturing method, there is a manufacturing apparatus using the centrifugal force described in Patent Publication No. 96-13594 filed by the applicant of the present invention, there was a technique that can easily produce a high-quality multi-segment segment, but the long bolt is inserted into the segment To manufacture a different technology was required.

상기한 바와같이 길이가 긴 볼트를 세그멘트 내부에 끼워서 체결하는데 따른 불편을 해결하려는 것이고, 또 긴볼트를 세그멘트에 끼워진 상태로 제조할수 있도록 하는 기술을 마련하는데에 그 주요한 기술적 과제가 있다.As described above, there is a major technical problem in providing a technique for manufacturing a long bolt in a state in which a long bolt is inserted into a segment.

도1은 본 발명 다분할 세그멘트의 사시도1 is a perspective view of the present invention multi-segment segment

도2는 본 발명 세그멘트의 조립한 상태의 확대 단면도Figure 2 is an enlarged cross-sectional view of the assembled state of the present invention segment

도3은 본 발명 세그멘트를 원방향으로 조립한 상태의 확대단면도Figure 3 is an enlarged cross-sectional view of a state in which the segment of the present invention assembled in the direction of a circle;

도4는 본 발명 세그멘트를 원방향으로 조립한 다른 실시 상태의 확대 단면도4 is an enlarged cross-sectional view of another embodiment in which the segment of the present invention is assembled in the circumferential direction;

도5는 본 발명의 세그멘트를 원심력으로 제조하는 회전 장치의 일부 절개한 정면도5 is a partially cut away front view of the rotating apparatus for producing a segment of the present invention by centrifugal force;

제6은 도 5의 A-A 단면도6 is a cross-sectional view taken along the line A-A of FIG.

제7은 도 5의 'B' 부분 확대도7 is an enlarged view of a portion 'B' of FIG. 5;

제8은 도 6의 'C' 부분 확대도8 is an enlarged view of a portion 'C' of FIG. 6;

제9는 도 8의 다른 실시 상태의 확대도9 is an enlarged view of another embodiment of FIG. 8

[ 도면의 주요부분에 사용된 부호의 설명][Description of Symbols Used in Main Parts of Drawings]

(1)(2)(3)(4) 세그멘트 , (5)긴볼트, (6)발포연질합성수지관, (7)긴볼트 (8)(8')안내관, (9)(13)홈, (10)연결편, (11)체결공, (12)체결볼트, (14)지수재, (15)보강재, (16)방수캡 (21)환체, ((22)홈, (23)캡, (24)위치고정와셔,(24')위치조정왓셔, (25)커버, (26)볼트너트, (27)고정간, (28)분할간, (29)볼트, (30)지지관, (31)캡, (32)내부임시고정편,(1) (2) (3) (4) segments, (5) long bolts, (6) foam flexible resin tubes, (7) long bolts (8) (8 ') guides, (9) (13) , (10) connecting piece, (11) fastener, (12) fastening bolt, (14) index material, (15) stiffener, (16) waterproof cap (21) recirculation, ((22) groove, (23) cap, (24) Position Washer, (24 ') Position Washer, (25) Cover, (26) Bolt Nut, (27) Fixing Interval, (28) Splitting Bar, (29) Bolt, (30) Support Tube, ( 31) cap, (32) internal fixation fixation,

도1에 표현된 바와 같이 직사각형 세그멘트(1),좌측이 경사면이 형성된 세그멘트(2), 우측의 경사면이 형성된 세그멘트(3) 및 양측의 경사면이 형성된 사다리꼴 세그멘트(4)들의 내 양측에 길이가 긴볼트(5)가 회전이 가능한 상태로 끼워서 제조한것이고 이들 긴볼트(5)는 도2에서 보는 바와같이 발포연질합성수지관(6)으로 싸여 있어서 볼트(5)가 길이 방향으로 움직일 수 있는 상태이고 일측은 긴볼트(5)외경과 일치하는 위치고정왓셔(24)가 끼워지고 다른 일측은 긴볼트(5) 외경보다 약간 내경이 큰 위치조정와셔(24')가끼워져 긴볼트(5)의 한쪽은 외경 방향으로 약간 움직일수 있는 상태로 끼워져있다. 또 볼트의 양단에는 나선부가 형성되어있어 그 양단에 길이가 긴 긴너트(7)를 끼울수 있고 긴볼트(5) 단부 주위에 형성된 나팔형 홈에 맞는 안내관(8)(8')이 구비 되어있다.As shown in FIG. 1, the length of the rectangular segment 1, the segment 2 having the inclined surface on the left side, the segment 3 having the inclined surface on the right side, and the trapezoidal segments 4 having the inclined surface on both sides are long. The bolts 5 are manufactured by inserting them in a rotatable state, and these long bolts 5 are wrapped in a foamed soft synthetic resin tube 6 as shown in FIG. 2 so that the bolts 5 can move in the longitudinal direction and one side thereof. The position fixing washer 24 is fitted to match the outer diameter of the long bolt 5, and the other side of the long bolt 5 has a position adjusting washer 24 'that is slightly larger than the outer diameter of the long bolt 5. It is fitted in a state capable of moving slightly in the outer diameter direction. In addition, both ends of the bolt are formed with spirals, and long ends of the long nuts 7 can be inserted at both ends thereof, and guide tubes 8 and 8 'that fit into the trumpet-shaped grooves formed around the ends of the long bolts 5 are provided. It is.

세그멘트(1)(2)(3)에 형성된 홈(9)은 세그멘트를 원방향으로 체결할 때 연결편(10)을 끼우기 위한 것이고 각 체결공(11)들은 연결편(10)을 끼우고 볼트(12)를 조이기위한 것이다. 홈(13)들은 세그멘트(2)(3)(4)의 경사면 모서리 부에 형성된 연결편(10)의 끼움홈들인데 이는 원방향으로 세그멘트를 연결하여 원을 이루는 마지막 단계에서 세그멘트의 경사면을 이용하여 길이 방향으로 이맞춤할때 연결편(10)을 끼울수 있게한 구성이다.The grooves 9 formed in the segments 1, 2, and 3 are for fitting the connecting pieces 10 when the segments are fastened in the circumferential direction, and the respective fastening holes 11 are fitted with the connecting pieces 10 and bolts 12. To tighten). The grooves 13 are fitting grooves of the connecting piece 10 formed at the edges of the inclined surfaces of the segments 2, 3, and 4, which connect the segments in the circumferential direction to form a circle and use the inclined surfaces of the segments in the last step. When fitting in the longitudinal direction is the configuration that can be fitted to the connecting piece (10).

미 설명 부호 14는 밀폐용 고무 패킹이다.Reference numeral 14 is a rubber seal for sealing.

이와같이 구성된 본 발명의 세그멘트는 긴볼트(5) 단부에 긴너트(7)를 끼워서 양 세그멘트에 끼워져 있는 긴볼트(5)를 연결하게되는 것이고 긴볼트(5)를 돌릴때 발포연질합성수지관(6)이 유동성 재질이어서 볼트의 나선부와 긴너트(7)의 나선공이 잘들어 맞게된다. 또 긴너트(7)의 외부에 끼워진 안내관(8)(8')은 세그멘트를 서로 맞붙일 때 나팔형 홈에의하여 정위치로 조립되어지는 작용을 하게한다.The segment of the present invention configured as described above is to connect the long bolt (5) fitted to both segments by inserting the long nut (7) at the end of the long bolt (5), and when the long bolt (5) is turned to the flexible flexible resin tube (6) ) Is a fluid material so that the threaded part of the bolt and the threaded hole of the long nut 7 fit well. In addition, the guide pipes 8 and 8 'fitted to the outside of the long nut 7 act to be assembled in place by the trumpet-shaped grooves when the segments are joined to each other.

이와 교차되는 방향으로는 도3 및 도4에서 보는 바와같이 홈(9)(13)에연결편(10)을 끼우고 볼트(12)로 체결하면 되는데 세그멘트의 크기와 중량의 변동에따라 그 견고성을 부여하기위하여 세그멘트 내부에 판형 보강재(15)를 매설 할수도 있고 또 볼트(12)의 수도 늘릴수도 있다.As shown in Figs. 3 and 4, the connecting pieces 10 are inserted into the grooves 9 and 13 and fastened with bolts 12. As shown in Figs. The plate-shaped reinforcement 15 may be buried in the segment to impart, or the number of bolts 12 may be increased.

본 발명의 세그멘트의 제조 방법을 설명하면,Referring to the manufacturing method of the segment of the present invention,

도5에 도시된 회전장치는 원심력을 구하는 다분할세그멘트의 제조장치로써 이를 이용한 제조 방법은 환체(21)에 형성된 홈(22)에 고정용 합성수지재 캡(23)을 끼우면서 발포연질합성수지관(6) 일측에 위치고정형왓셔(24)와 다른 일측에 위치조정형와셔(24')를 끼운 긴볼트(5)의 양단을 고정시켜 설계에 의하여 배합된 콘크리트를 투입할 때 원심력에 의하여 그 위치가 변동되지 아니하도록하며 형틀 커버(25)화 환체(21)을 볼트너트(26)로 고정하고, 원방향으로는 커버(25)의 고정간(27)사이에 분할간(28)을 설치하는 한편 고정간(27)에서 끼워진 볼트(29)에 지지판(30)과 캡(27)을 이용하여 내부 고정편(32)을 정위치 시킨다음에 콘크리트를 주입하며 원심력으로 세그멘트를 성형시키고 양생후 각 체결부를 풀어서 세그멘트를 빼낸후 캡(23)과 내부 고정편 (32),지지관(30), 및 캡(31)을 분리하여 제조 되는 것이다.5 is a manufacturing apparatus of a multi-segmented segment that obtains centrifugal force, and a manufacturing method using the same includes inserting a flexible synthetic resin cap 23 into a groove 22 formed in a ring 21, and using a flexible flexible resin tube ( 6) The position is changed by centrifugal force when inserting the concrete mixed by design by fixing both ends of the fixed washer 24 on one side and the long bolt 5 with the positioning washer 24 'on the other side. The frame cover 25 and the ring body 21 are fixed with the bolt nut 26, and in the circumferential direction, the partition bar 28 is installed between the fixing bars 27 of the cover 25 and fixed. After the inner fixing piece 32 is fixed to the bolt 29 fitted in the liver 27 using the support plate 30 and the cap 27, concrete is injected and the segments are molded by centrifugal force. Loosen the segment and loosen the cap (23), the inner fixing piece (32), the support tube (30), And it is manufactured by separating the cap 31.

도9에 도시된 것은 세그멘트에 판상형 보강재(15)를 매설하고 볼트(29)를 다수 설치한 상태로 제조할수 있다는 것을 보여주는 실시예이다. 이러한 실시예에서는 판상형 보강재도 형태를 변형 시킬수있다.9 is an embodiment showing that the plate-shaped reinforcement 15 is embedded in the segment and can be manufactured with a plurality of bolts 29 installed. In this embodiment, the plate-shaped reinforcement can also change shape.

본 발명은 세그멘트(1)(2)(3)(4) 내에 긴볼트(5)가 존재되어 있는 것으로 작업 공간이 복잡한 터널내에서 세그멘트의 조립 작업이 매우 신속 정확 하게 이루어지는 작업성이 좋은 효과가 있는데다가 긴볼트(5)를 감싸고있는 발포연질합성수지관(6)이 유동성이 있어서 볼트와 너트의 위치에 미세한 차가 있어도 정확히 조립되는 효과가 있으며 긴너트(7)로 긴볼트(5)의 나선를 정확하게 잡게되어 연속적으로 세그멘트를 연결하는 속도가 빠른 효과도 있는 것이다. 더욱이 연결편(10)에 의한 볼트(12)의 체결은 매우 견고하게 원방향으로 조립이 이루어지고 작업성도 좋은 것이다.According to the present invention, the long bolts 5 are present in the segments 1, 2, 3, and 4, and the workability of the segment is very fast and accurate in the tunnel where the working space is complicated. In addition, the flexible flexible resin tube (6) surrounding the long bolt (5) is fluid, so that there is an effect of assembling precisely even if there are minute differences in the positions of the bolts and nuts, and the nut of the long bolt (5) is accurately There is also a quick effect of connecting the segments in succession. In addition, the fastening of the bolt 12 by the connecting piece 10 is very firmly assembled in the circular direction and workability is also good.

제조 방법에 있어서는 홈(22)을 가진 환체(21)와 홈(22)에 의탁하여 긴볼트(5)를 잡고 있게되는 캡(23)과 내부 착탈식 고정편(32) 또는 판형 보강재(15)의 볼트(29),지지관(30) 및 캡(31)의 고정 수단으로 홈(9)(13)을 구성할 수 있는 방법으로 본 발명의 세그멘트를 제조할수 있게한데 특징이 있는 것이다.In the manufacturing method, the cap 23 and the inner detachable fixing piece 32 or the plate-shaped reinforcement 15 which hold the long bolt 5 by the ring 21 having the grooves 22 and the grooves 22. It is characterized in that the segment of the present invention can be manufactured in such a way that the grooves 9 and 13 can be constituted by the fixing means of the bolt 29, the support tube 30 and the cap 31.

Claims (4)

직사각형 세그멘트(1)와 경사면을 가진 세그멘트(2)(3)(4)내에 양단의 나선부가 형성된 긴볼트(5)를 존재 시킨것과 상기 긴볼트(5)의 양단 나선부를 긴너트(7)로 연결하여 터널의 길이 방향으로 조립할수있게한 수단과,세그멘트에 홈(9)(13)을 형성하고 이에 연결편을 끼워서 볼트(12)로 고정하여 세그멘트의 원방향으로 조립 할수있게하고 원심력을 이용하여 제작 할수있게 한 것을 특징으로하는 다분할 세그멘트.A long bolt (5) having spiral ends at both ends is formed in a rectangular segment (1) and a segment (2) (3) (4) having an inclined surface, and both ends of the long bolt (5) are connected to the long nut (7). By means of connecting means to be assembled in the longitudinal direction of the tunnel, the grooves (9) and (13) are formed in the segment, and the connecting pieces are inserted into the bolts (12) so as to be assembled in the direction of the segment and using centrifugal force Multi-segment, characterized by the ability to make. 제1항에 있어서 긴볼트(5)외주에 발포연질합성수지관(6)으로 싸여 있게하고 양단 일측에 위치고정와셔(24)와 다른 일측에 위치조정와셔(24')설치하고 긴너트(7)에 안내관(8)(8')를 끼우게한 것을 특징으로하는 다분활 세그멘트.The long bolt (5) is enclosed with a foamed soft synthetic resin tube (6) on the outer circumference, and a position washer (24 ') is provided on one side and a position nut (7') on the other side of the long bolt (7). Multisegment segment, characterized in that the guide tube (8) (8 ') sandwiched in. 제1항에 있어서 세그멘트에 형성된 홈(9)(13)내에 연결편(10)을 보다 간편하고 견고하게 체결할수 있게 판형 보강재(15)를 매설한 것을 특징으로 하는 다분할 세그멘트.The multi-segment segment according to claim 1, wherein a plate-shaped reinforcement (15) is embedded in the groove (9) (13) formed in the segment so as to more easily and firmly fasten the connecting piece (10). 환체(21)에 홈(22)을 형성하여 이에 캡(23)을 끼우면서 합성수지관(6)과 위치조정와셔(24')가 끼워진 긴볼트(5)의 양단을 고정시키고 형틀 커버(25)와 환체(21)를 볼트너트를 고정한다음 원방향으로는 커버(25)의 고정간(27) 사이에 분할간(28)을 설치하는 한편 고정간(27)에서 끼워진 볼트(29)에 지지관(30)과 캡(31)을 이용하여 내부고정편(32)을 정위치 시킨 다음에 콘크리트를 주입하며 원심력으로 세그멘트를 성형, 양생한후 각 결합부를 풀어서 세그멘트를 얻어내는 것을 특징으로 하는 다분할 세그멘트의 제조방법.The grooves 22 are formed in the annular body 21 to fix both ends of the long bolt 5 to which the synthetic resin pipe 6 and the positioning washer 24 'are fitted while the cap 23 is fitted thereto, and the mold cover 25 is formed. And bolt 21 are fixed to the ring nut, and then, in the circumferential direction, a partitioning section 28 is installed between the fixing section 27 of the cover 25 while the support tube is attached to the bolt 29 fitted in the fixing section 27. Using the 30 and the cap 31, the inner fixing piece 32 is placed in position, and then concrete is injected, and the segment is formed and cured by centrifugal force, and then each segment is released to obtain a segment. Method of Making Segments.
KR1019990060073A 1999-12-21 1999-12-21 Concreet segment KR100352518B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200471715Y1 (en) 2012-08-19 2014-03-10 조형진 Fixture for multi-split molding
KR101372619B1 (en) 2012-08-19 2014-03-11 조형진 Multi-split mold and molding

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* Cited by examiner, † Cited by third party
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CN107663864B (en) * 2017-11-17 2023-11-21 金陵科技学院 Municipal pipeline tunnel structure and construction method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000016827A (en) * 1998-08-11 2000-03-25 무카사 신지 Segments

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000016827A (en) * 1998-08-11 2000-03-25 무카사 신지 Segments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200471715Y1 (en) 2012-08-19 2014-03-10 조형진 Fixture for multi-split molding
KR101372619B1 (en) 2012-08-19 2014-03-11 조형진 Multi-split mold and molding

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