KR20180012408A - The method of manufacturing an ice-making drum and the ice-making drum thereof - Google Patents

The method of manufacturing an ice-making drum and the ice-making drum thereof Download PDF

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KR20180012408A
KR20180012408A KR1020160095165A KR20160095165A KR20180012408A KR 20180012408 A KR20180012408 A KR 20180012408A KR 1020160095165 A KR1020160095165 A KR 1020160095165A KR 20160095165 A KR20160095165 A KR 20160095165A KR 20180012408 A KR20180012408 A KR 20180012408A
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South Korea
Prior art keywords
ice
end wall
drum
semi
finished product
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KR1020160095165A
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Korean (ko)
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KR101880538B1 (en
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윤근수
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윤근수
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Priority to KR1020160095165A priority Critical patent/KR101880538B1/en
Priority to CN201610917876.1A priority patent/CN107662085B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/10—Producing ice by using rotating or otherwise moving moulds

Abstract

The present invention relates to a new method for manufacturing an ice-making drum, which is easy to manufacture, has excellent cooling performance, and has excellent durability of a device, and to an ice-making drum. According to the present invention, the method comprises: a step (S1) of preparing a molding material block (11) by cutting an aluminum ring (10); a step (S2) of forging and molding the molding material block (11) to form a hollow cylindrical semi-product (12) in which one end of a cylindrical circumferential part (13) is opened to an opening part (14) and the other end thereof is blocked by an end wall (15), while a support shaft (16) protrudes outward from the central part of the end wall (15) and an axial support part (17) is formed inside the central part of the end wall (15); a step (S3) of forming a drum semi-product (21) having a through hole (24) and a neck part (23), of which a diameter is decreased by a shoulder part (22) by decreasing a width of the circumferential part (13) of the opening part (14) of the hollow cylindrical semi-product (12); and a step (S4) of molding and finishing an oxidation coating layer (25) by mechanically processing the surface of the drum semi-product (21) and surface-treating the same by anodizing.

Description

제빙드럼의 제조방법 및 그 제빙드럼 {The method of manufacturing an ice-making drum and the ice-making drum thereof}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing an ice-making drum,

본 발명은 제빙드럼 제조방법 및 그 제빙드럼에 관한 것으로서, 좀 더 상세히는 제조가 용이하면서도 냉각성능이 우수하고 장치의 내구성이 우수한 새로운 제빙드럼 제조방법 및 이에 의해 제조된 제빙드럼에 관한 것이다.The present invention relates to a method of manufacturing a freezing drum, and more particularly, to a new method of manufacturing a freezing drum having excellent cooling performance and excellent durability, and a freezing drum manufactured thereby.

제빙드럼을 구비한 제빙기는 냉동사이클의 증발기가 내장된 제빙드럼이 급수조 위에 부분적으로 잠기도록 회전가능하게 설치되어 구성된 것으로서, 급수조의 물이 제빙드럼의 표면에 묻은 채로 제빙드럼이 회전되면서 내부의 냉동사이클에 의해 냉각된 제빙드럼 표면의 물이 결빙되고, 제빙드럼의 타측에 근접설치된 커터를 소정 간격으로 접근시켜서 적절한 두께로 결빙된 얼음층을 제빙드럼으로부터 박리시켜서 하부에 배치된 수집조로 수집함으로써 얼음가루를 제작하며, 제작된 얼음가루는 빙수 등과 같은 차가운 음식의 재료 또는 냉각수단으로서 사용된다.An ice maker having a ice-making drum is configured to be rotatably installed so that a ice-making drum having an evaporator of a refrigeration cycle is partially immersed on a water-supply vessel. While the water of the water-supply vessel is adhered to the surface of the ice- The ice on the surface of the ice-making drum cooled by the freezing cycle is frozen and the cutter close to the other side of the ice-making drum is approached at a predetermined interval to peel the ice layer with a proper thickness from the ice-making drum, And the prepared ice flour is used as a material of cold food such as ice water or cooling means.

이러한 드럼식 제빙기의 제빙드럼을 냉각시키는 방식으로는 크게 제빙드럼의 내주면에 증발기코일을 감아서 제빙드럼을 냉각시키는 냉각코일방식과, 제빙드럼의 중심축을 따라 배치된 이중관형태의 냉매관으로부터 제빙드럼 내부공간에 액체상태의 냉매를 분사하여 팽창시키고 제빙드럼의 둘레벽과의 열교환을 통해 증발된 기체상태의 냉매가스를 냉매관을 통해 회수하여 순환시키는 냉매분사방식의 두 가지가 널리 사용되고 있다. 그런데, 냉각코일방식은 제빙드럼 내부에 냉각코일을 밀착되도록 배치하는 구조가 복잡하여 제조가 까다로운 반면, 냉매분사방식은 냉각코일을 제빙드럼 내에 배치하지 않아도 되므로 상대적으로 제작이 용이하다. In this type of drum-type ice-maker, there are a cooling coil system in which an evaporator coil is wound around an inner circumferential surface of a ice-making drum to cool the ice-making drum, and a cooling coil system in which the ice- Two types of refrigerant spraying methods are widely used in which liquid refrigerant is injected into a space to expand and circulate the evaporated refrigerant gas through heat exchange with the peripheral wall of the ice-making drum through a refrigerant pipe. However, since the cooling coil system has a complicated structure for arranging the cooling coils closely to the inside of the ice-making drum, the cooling coil system is relatively difficult to manufacture, while the cooling coil system is relatively easy to manufacture because the cooling coil is not required to be disposed in the ice-making drum.

한편, 종래의 이러한 냉매분사방식의 제빙기의 제빙드럼은 도 1에 도시된 바와 같이, 재빙드럼(1)이 스테인레스스틸재 판재를 원통으로 감아서 원통체(2)를 제작하고, 양단부에 원형의 측판(3,4)을 용접하되, 일측 측판(3)에는 냉매분사용 노즐(9)이 형성된 냉매관(5)이 관통되는 관통공(6)을 형성하고, 타측 측판(4)의 외부에는 제빙드럼(1)을 회전가능하게 지지하기 위한 지지축(8)이 외향돌출되도록 용접되고 이 측판(4)의 내부에는 냉매관(5)의 선단부를 회전가능하게 지지하기 위해 축지지부(7)를 형성하고, 일측 측판(3)의 관통공(6)에는 냉매관(5)을 회전가능하게 지지하면서도 냉매의 유출을 막기 위한 밀봉구조를 구비한다. 그런데 이러한 종래의 제빙드럼(1)은 스테인레스를 절단하고 용접을 해야 하는 등, 제작공정이 상대적으로 복잡하고, 스테인레스스틸재료의 열전도성이 상대적으로 낮아서 냉각제빙효율이 낮다는 문제점이 있다. 또한, 측판(3)을 이루는 스테인레스스틸판의 두께가 상대적으로 얇아서 냉매관(5)을 밀봉적으로 회전가능하게 축지지하는 베어링구조를 기밀하게 결합하기가 쉽지 않다는 문제점이 있었다. [0004] On the other hand, in the conventional ice-making drum of the icemaker of the refrigerant jetting type, as shown in Fig. 1, the drum 1 is formed by winding a stainless steel plate material around a cylinder to form a cylindrical body 2, A through hole 6 through which the refrigerant pipe 5 having the refrigerant distributing nozzle 9 formed therein is formed is formed in one side plate 3 and the other side plate 4 is welded to the outside of the other side plate 4 A supporting shaft 8 for rotatably supporting the ice-making drum 1 is welded so as to protrude outward and a shaft supporting portion 7 is provided inside the side plate 4 for rotatably supporting the front end portion of the cooling- And the through hole 6 of the one side plate 3 is provided with a sealing structure for rotatably supporting the refrigerant pipe 5 while preventing the refrigerant from flowing out. However, such a conventional ice-making drum 1 has a problem that the manufacturing process is relatively complicated and the thermal conductivity of the stainless steel material is relatively low due to the cutting and welding of the stainless steel. Further, the thickness of the stainless steel plate constituting the side plate 3 is relatively thin, so that it is not easy to hermetically bond the bearing structure for axially supporting the refrigerant pipe 5 in a rotatable manner.

국내특허 제10-1588178호 (2016.01.19)Korean Patent No. 10-1588178 (2016.01.19)

본 발명은 전술한 바와 같은 종래의 제빙드럼을 사용하는 제빙기의 제조상의 문제점에 착안하여 제안된 것으로서, 본 발명은 제조가 용이하면서도 냉각성능이 우수하고 장치의 내구성이 우수한 새로운 제빙드럼의 제조방법 및 그 제빙드럼을 제공하고자 하는 것이다.The present invention has been made in view of the problems of the conventional ice making machine using the ice making drum. The present invention relates to a new ice making drum manufacturing method which is excellent in cooling performance and has excellent durability, And to provide the ice drum.

본 발명의 한 특징에 따르면, 알루미늄 환봉(10)을 절단하여 소정 크기의 성형재료블록(11)을 준비하는 단계(S1), 상기 성형재료블록(11)을 단조성형하여 원통형 둘레부(13)의 일단은 개방부(14)로 개방되고 타단은 단부벽(15)으로 막히며 이 단부벽(15)의 중심부 외측에는 지지축(16)이 외향돌출되고 이 단부벽(15)의 중심부 내측에는 축지지부(17)가 형성되는 중공원통형 반제품(12)을 성형하는 단계(S2), 상기 중공원통형 반제품(12)의 개방부(14)측 둘레부(13)를 축관하여 숄더부(22)에 의해 축경된 네크부(23)와 관통공(24)을 구비한 드럼 반제품(21)을 성형하는 단계(S3), 상기 드럼 반제품(21)의 표면을 기계가공하고 아노다이징으로 표면처리하여 산화피막층(25)을 형성하여 마감하는 단계(S4)를 포함하는 것을 특징으로 하는 제빙드럼(20)의 제조방법이 제공된다.According to an aspect of the present invention, there is provided a method of manufacturing a molding material block, comprising the steps of: (S1) preparing a molding material block 11 of a predetermined size by cutting an aluminum round bar 10; One end of the end wall 15 is open to the opening 14 and the other end is closed by the end wall 15. At the outside of the center of the end wall 15, the support shaft 16 protrudes outward, A step S2 of forming a hollow cylindrical semi-finished product 12 in which the shaft supporting portion 17 is formed and a step of forming a hollow cylindrical semi-finished product 12 in such a manner that a peripheral portion 13 of the hollow cylindrical semi-finished product 12, (3) shaping the drum semi-finished product (21) having the neck portion (23) and the through hole (24), which is reduced in diameter, by machining the surface of the drum semi finished product (21) And forming and finishing a finishing step (S4) for finishing the ice making drum (20).

본 발명의 다른 특징에 따르면, 알루미늄을 단조성형하여 일체로 제작되며 원통형 둘레부(13)의 일단은 단부벽(15)에 의해 막히고 타단은 둘레부(13)은 숄더부(21)에 의해 축경된 네크부(22)에 의해 형성되는 관통공(23)이 형성되고, 상기 일단의 단부벽(15)의 중심부 외측에는 지지축(16)이 일체로 외향돌출되고, 이 단부벽(15)의 중심부 내측에는 축지지부(17)가 일체로 형성되며, 상기 타측 네크부(22)의 내경부에는 암사부가 형성된 것을 특징으로 하는 제빙드럼(20)이 제공된다.According to another aspect of the present invention, aluminum is monolithically molded and integrally formed. One end of the cylindrical peripheral portion 13 is closed by the end wall 15, and the peripheral end portion 13 of the cylindrical end is closed by the shoulder portion 21, A support shaft 16 is integrally projected outwardly on the outer side of the central portion of the end wall 15 at one end and the support shaft 16 is integrally projected outwardly of the end wall 15, And a shaft portion (17) is integrally formed on the inner side of the center portion, and a swinging portion is formed on the inner diameter portion of the other side neck portion (22).

본 발명에 따르면, 제빙기의 제빙드럼을 제작함에 있어서, 종래의 스테인레스스틸을 절단하고 용접하여 제작하는 것에 비해, 열전도성이 우수한 알루미늄으로 단조성형하므로, 제작된 제빙드럼의 열전도성이 우수하여 제빙드럼의 냉각효율이 우수하여 제빙성능을 높일 수 있다. 또한, 알루미늄을 단조성형하므로, 알루미늄 금속재료의 재질이 치밀해져서, 알루미늄을 다이캐스팅이나 압출성형하여 제빙드럼을 제작하는 것에 비해, 제품의 구조가 견고하고 내구성이 우수하며 결빙된 얼음을 절삭하는 커터의 절삭작용에 대한 드럼의 내마모성도 증대되고, 내부의 높은 압력에도 변형되지 않아서 원활한 작동이 가능하다.According to the present invention, in manufacturing the ice making drum of the icemaker, since the conventional ice-making drum is forged with aluminum having excellent thermal conductivity as compared with the conventional stainless steel cut and welded, the manufactured ice- The ice-making performance can be improved. In addition, since the aluminum is forged, the material of the aluminum metal material becomes dense, so that the structure of the ice-making drum is made by die-casting or extrusion molding of aluminum, and the structure of the cutter The abrasion resistance of the drum against the cutting action is increased, and the drum is not deformed even by the high pressure in the inside, thereby enabling smooth operation.

또한, 이러한 제빙드럼의 단조성형시에, 일측 단부벽(15)에 외향돌출되는 지지축(16)과 이 단부벽(15)의 내측에 형성되는 축지지부(17)를 동시에 일체로 성형할 수 있어서, 이들 지지축(16)이나 단부벽(15)을 용접해야 하는 스텐레스제품에 비해 제작이 용이하고, 단조성형을 통해 지지축(16)과 축지지부(17)의 금속재료가 더욱 압축되어 조직이 치밀해지므로, 회전지지축(16)이나 냉매관을 회전가능하게 지지하는 축지지부(17)가 회전마찰에 대한 내마모성이 증대된다.The supporting shaft 16 protruding outward from the one end wall 15 and the shaft supporting portion 17 formed inside the end wall 15 can be formed integrally at the same time during the forging molding of the ice- The metal material of the support shaft 16 and the shaft support portion 17 is further compressed through the forging process so that the support shaft 16 and the end wall 15 can be easily compressed The shaft support portion 17 for rotatably supporting the rotation support shaft 16 and the coolant pipe is increased in abrasion resistance against rotational friction.

또한 제빙드럼(20)의 표면에는 아노다이징으로 표면처리하여 산화피막층(25)을 형성함으로써, 제품의 내식성이나 내마모성을 더욱 증대시켜서 성능이 우수한 제빙드럼을 제작할 수 있다. Further, the surface of the ice-making drum 20 is surface-treated by anodizing to form an oxide coating layer 25, thereby further increasing the corrosion resistance and wear resistance of the product, and thus a ice-making drum having excellent performance can be manufactured.

도 1은 종래의 제빙드럼의 개략구성도
도 2는 본 발명의 일 실시예에 따른 제빙드럼의 외관도
도 3은 본 발명의 일 실시예의 제조공정도
도 4는 본 발명에 따라 제작된 제빙드럼의 단면도1 is a schematic diagram of a conventional ice-making drum
2 is an external view of the ice-making drum according to the embodiment of the present invention.
3 is a schematic view showing a manufacturing process of an embodiment of the present invention
4 is a cross-sectional view of the ice-making drum manufactured according to the present invention

이하에서 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다. 도 2는 본 발명의 일 실시예에 따른 제빙드럼의 외관도이고 도 3은 본 발명에 따른 제빙드럼의 제조공정도이고, 도 3은 본 발명에 따라 제작된 제빙드럼의 단면도이다.Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 2 is an external view of a ice-making drum according to an embodiment of the present invention, FIG. 3 is a view illustrating a manufacturing process of a ice-making drum according to the present invention, and FIG. 3 is a sectional view of a ice-

도 3에 도시된 바와 같이, 본 발명에 따른 제빙드럼의 제조방법에 따르면, 먼저 알루미늄환봉(10)을 적절한 규격으로 절단하여 소정 크기의 성형재료블록(11)을 준비한다(S1). 바람직하게는 이와 같이 얻어진 성형재료블록(11)을 단조성형하기 전에 전처리로서, 풀림(소둔)열처리를 하고 재료 내부의 잔류응력을 제거하거나 재료의 연성을 높이도록 하고, 표면에 윤활재를 도포한다.As shown in FIG. 3, according to the method for manufacturing a freezing drum according to the present invention, the aluminum round bar 10 is first cut to a proper size to prepare a molding material block 11 having a predetermined size (S1). Preferably, the thus obtained molding material block 11 is subjected to annealing (annealing) as a pretreatment before monolithic molding to remove residual stress in the material or increase the ductility of the material, and the lubricant is applied to the surface.

다음에, 이 성형재료블록(11)을 단조성형하여, 원통형 둘레부(13)의 일단은 개방부(14)로 개방되고 타단은 단부벽(15)으로 막히며, 단부벽(15)의 중심부 내외측에 각각 지지축(16)과 축지지부(17)가 돌출성형되는 중공원통형 반제품(12)을 성형한다(S2). 이러한 중공원통형 반제품(12)은 단일의 단조금형에 대한 일회의 프레스작동에 의해 성형될 수도 있으나, 점진적으로 변화되는 단조금형에 의해 다단계의 성형을 통해 최종적인 중공원통형 반제품(12)을 성형할 수 있다. Next, the molding material block 11 is forged so that one end of the cylindrical peripheral portion 13 is opened to the open portion 14 and the other end is closed to the end wall 15, And a hollow cylindrical semi-finished product 12 is formed on the inner and outer sides of the hollow cylindrical member 12, in which the support shaft 16 and the shaft support portions 17 are protruded (S2). The hollow cylindrical semi-finished product 12 may be formed by a single press operation on a single forged die, but the final hollow cylindrical semi-finished product 12 can be formed through multi-stage molding by a gradually changing forged die have.

중공원통형 반제품(12)의 일측 단부벽(15)의 중심부 외측에는 제빙드럼(20)을 회전시키는 지지축(16)을, 그리고 단부벽(15)의 내측에는 삽입되어 지지되는 냉매관(6)을 회전가능하게 축지지하는 축지지부(17)를 동시에 성형할 수 있어서, 종래의 스테인레스재질의 제빙드럼에서 지지축이나 축지지부를 용접접합하는 번거로움을 해소할 수 있다. 그리고 단조성형에 의해 알루미늄 금속재료가 가압되어 재료의 조직이 더욱 치밀해지므로, 압출성형이나 다이캐스팅성형에 의해 제조하는 것에 비해, 제빙드럼의 강도나 내구성이 증대되고, 내압능력도 형상된다. 한편, 필요에 따라 이와 같이 1차단조성형된 중공원통형 반제품(12)을 다음공정에 투입하기 전에 재차 풀림열처리 및 윤활제도포 등의 처리를 행할 수 있다. A supporting shaft 16 for rotating the ice making drum 20 is provided on the outer side of the central part of one end wall 15 of the hollow cylindrical semi-finished product 12 and a refrigerant pipe 6 inserted and supported inside the end wall 15, It is possible to simultaneously form the shaft support portion 17 for rotatably supporting the shaft, and it is possible to eliminate the inconvenience of welding and joining the support shaft and the shaft support portion in the conventional ice-making drum made of stainless steel. Further, since the aluminum metal material is pressed by the forging to make the structure of the material more dense, the strength and durability of the ice-making drum are increased and the pressure-resistant ability is also formed, compared with the case where the aluminum metal material is produced by extrusion molding or die casting molding. On the other hand, if necessary, processing such as annealing and lubricant application can be carried out again before the hollow cylindrical semi-finished product 12 having the above-described one-block constriction type is introduced into the next process.

이어서, 상기 중공원통형 반제품(12)의 개방부(14)측 둘레부를 축관하여 숄더부(22)에 의해 축경된 네크부(23)와, 이 네크부(23)의 내부에 관통형성되는 관통공(14)을 구비한 드럼 반제품(21)을 성형한다(S3). 이러한 축관가공은 단조, 프레스가공, 스피닝가공 등의 적절한 방법으로 이루어질 수 있다.A neck portion 23 of the hollow cylindrical semi-finished product 12 which is shrunk by the shoulder portion 22 about the opening 14 side of the hollow cylindrical semi-finished product 12 and a through hole 23 formed through the inside of the neck portion 23, The drum semi-finished product 21 having the drum 14 is formed (S3). Such axial machining can be accomplished by suitable methods such as forging, pressing, spinning, and the like.

이어서, 이와 같이 얻어진 드럼 반제품(21)의 표면을 기계가공하고 표면에 아노다이징으로 산화피막층(25)을 형성하여 마감한다(S4). 바람직하게는 경질아노다이징으로 표면처리를 하는데, 이와 같이 아노다이징으로 표면처리함으로써, 알루미늄재 제빙드럼(20)의 내식성과 내마모성을 증대시킬 수 있다.Then, the surface of the thus obtained drum semi-finished product 21 is machined, and an anodized layer 25 is formed on the surface by anodizing (S4). Preferably, the surface treatment is performed by hard anodizing. By subjecting the surface to anodizing in this manner, the corrosion resistance and wear resistance of the aluminum material-producing drum 20 can be increased.

이와 같이 산화피막층(25)을 형성하여 마감이 완료되면, 상기 네크부(23)의 내주면에 암나사부(27)를 형성한다. 이 암나사부(27)는 도 4에 도시된 바와 같이 네크부(23)에 의해 형성되는 관통공(24)에 끼워지는 냉매관(5)을 회전가능하며 수밀하게 지지하는 밀봉베어링부(28)와 기밀하게 결합하게 된다.After the anodization layer 25 is formed and the finish is completed, the female threaded portion 27 is formed on the inner circumferential surface of the neck portion 23. 4, the female screw portion 27 includes a sealing bearing portion 28 for rotatably and watertightly supporting the refrigerant tube 5 fitted in the through hole 24 formed by the neck portion 23, As shown in FIG.

Claims (2)

알루미늄 환봉(10)을 절단하여 소정 크기의 성형재료블록(11)을 준비하는 단계(S1), 상기 성형재료블록(11)을 단조성형하여 원통형 둘레부(13)의 일단은 개방부(14)로 개방되고 타단은 단부벽(15)으로 막히며 이 단부벽(15)의 중심부 외측에는 지지축(16)이 외향돌출되고 이 단부벽(15)의 중심부 내측에는 축지지부(17)가 형성되는 중공원통형 반제품(12)을 성형하는 단계(S2), 상기 중공원통형 반제품(12)의 개방부(14)측 둘레부(13)를 축관하여 숄더부(22)에 의해 축경된 네크부(23)와 관통공(24)을 구비한 드럼 반제품(21)을 성형하는 단계(S3), 상기 드럼 반제품(21)의 표면을 기계가공하고 아노다이징으로 표면처리하여 산화피막층(25)을 형성하여 마감하는 단계(S4)를 포함하는 것을 특징으로 하는 제빙드럼(20)의 제조방법.
A step S1 of preparing a molding material block 11 of a predetermined size by cutting the aluminum round bar 10 and a step of forging the molding material block 11 such that one end of the cylindrical circumferential portion 13, And the other end is closed by the end wall 15. A support shaft 16 protrudes outward from the center of the end wall 15 and a shaft support 17 is formed inside the center of the end wall 15 A step S2 of molding the hollow cylindrical semi-finished product 12 and a step of forming a hollow cylindrical semi-finished product 12 in such a manner that a circumferential portion 13 on the side of the opening portion 14 of the hollow cylindrical semi-finished product 12 is divided into a neck portion 23, A step (S3) of forming a drum semi-finished product (21) having through holes (24) and a through hole (24), a step of machining the surface of the drum semi-finished product (21) and a surface treatment by anodizing to form an anodic oxide layer (S4). ≪ / RTI >
알루미늄을 단조성형하여 일체로 제작되며 원통형 둘레부(13)의 일단은 단부벽(15)에 의해 막히고 타단은 둘레부(13)은 숄더부(21)에 의해 축경된 네크부(22)에 의해 형성되는 관통공(23)이 형성되고, 상기 일단의 단부벽(15)의 중심부 외측에는 지지축(16)이 일체로 외향돌출되고, 이 단부벽(15)의 중심부 내측에는 축지지부(17)가 일체로 형성되며, 상기 타측 네크부(22)의 내경부에는 암사부가 형성된 것을 특징으로 하는 제빙드럼(20).One end of the cylindrical circumferential portion 13 is closed by the end wall 15 and the other end circumferential portion 13 is formed by the neck portion 22 reduced in diameter by the shoulder portion 21 And a support shaft 16 is integrally projected outward on the outer side of the central portion of the one end wall 15. An axle support portion 17 is formed inside the center portion of the end wall 15, And the other side neck portion (22) is provided with an arm portion on an inner diameter portion thereof.
KR1020160095165A 2016-07-27 2016-07-27 The method of manufacturing an ice-making drum and the ice-making drum thereof KR101880538B1 (en)

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