WO2019035538A1 - Method for manufacturing injection blow molded product, and injection blow molded product manufactured thereby - Google Patents

Method for manufacturing injection blow molded product, and injection blow molded product manufactured thereby Download PDF

Info

Publication number
WO2019035538A1
WO2019035538A1 PCT/KR2018/006053 KR2018006053W WO2019035538A1 WO 2019035538 A1 WO2019035538 A1 WO 2019035538A1 KR 2018006053 W KR2018006053 W KR 2018006053W WO 2019035538 A1 WO2019035538 A1 WO 2019035538A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
hollow
joint assembly
support ring
injection
Prior art date
Application number
PCT/KR2018/006053
Other languages
French (fr)
Korean (ko)
Inventor
손종칠
Original Assignee
(주) 중앙테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주) 중앙테크 filed Critical (주) 중앙테크
Priority to JP2019565145A priority Critical patent/JP6816312B2/en
Publication of WO2019035538A1 publication Critical patent/WO2019035538A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B29C2045/14524—Joining articles or parts of a single article making hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/706—Buoys

Definitions

  • the present invention relates to a method of producing a hollow injection molded article and a hollow injection molded article manufactured using the same, and more particularly, to a method of producing a hollow injection molded article through injection molding and a hollow injection molded article .
  • a pair of split injection molded bodies are connected through ultrasonic waves, bonding or the like, Thereby forming a molded product having a hollow portion.
  • a typical hollow molded article which is a hollow molded body, has sufficient buoyancy to form a stable sealed state of a hollow portion formed therein.
  • connection state is poor due to external impact during the transportation or use process, especially during the winter when the ambient temperature is low, or if the body is partially damaged, the airtightness of the hollow portion is damaged. If the airtightness of the hollow portion is damaged, The buoyant force is lost, so that it is difficult to perform the original function of supporting the surface of the water, and it may cause a fatal problem in terms of safety.
  • the object of the present invention which is devised to overcome the above-described problems, is to provide an injection molding machine, which is manufactured through injection molding such as a hollow half mold, a bumper guard, and a side step, And a hollow injection molded article produced by using the hollow injection molded article.
  • a melt is injected through a gate into a partial injection space of a partially injection mold in which a joint part of the joint assembly is exposed to form a seal band part in which a molten material injected into an outer wall of a joint part of at least a joint assembly forms an injection- And a control unit.
  • a reinforcing support ring is inserted into the inner diameter of a joint part of the mutually facing cap members, the joint part of the joint assembly is supported by the reinforcing support ring,
  • the inner assembly is supported by the reinforcing support ring penetrating the joint portion to prevent the joint portion from being depressed by the injection pressure of the melt,
  • the joint portion of the hollow injection molded product after the partial injection molding process is supported and fixed by the reinforcing support ring inserted in the inner diameter of the joint portion and the outer diameter portion is fusion bonded by the seal band portion, So that the joint portion is joined in a state of being supported in multiple layers by the reinforcing support ring and the seal band portion.
  • the reinforcing supporting ring is formed in such a manner that a plurality of supporting rods are arranged in a radiation structure inside a supporting ring member which is in contact with the inner diameter of the opening of the cap member.
  • a single reinforcing supporting ring is divided and arranged between the openings of the pair of cap members which are mutually facing each other, and the joint of the cap member and each cap member opening are reinforced and supported via a single reinforcing supporting ring.
  • the cap members are constructed so that the openings are brought into close contact with each other, and then the adjacent openings are mutually joined through bonding, ultrasonic welding, or taping so that the opposed openings form a mutually joined joint assembly.
  • the hollow injection molded article according to the present invention is characterized by being manufactured by the production method of the present invention.
  • a partial injection molding process is locally performed at a joint part of a joint assembly that joins openings of a plurality of cap members to form a hollow injection molded product in which a seal- And a hollow injection molded product molded by the method.
  • the joint assembly When the sealing band portion is formed in the joint assembly by performing the partial injection molding process as described above, the joint assembly is partially injected in a state where the joint assembly is fixedly fixed in the injection mold, and as a result, the joint assembly has an outer wall of uniform thickness , And has durability including uniformly high strength as a whole.
  • a reinforcing support ring is inserted and arranged in the opening of the cap member to be in close contact with each other, so that the opening of the cap member And the opening of the cap member is prevented from being depressed due to an external force generated during the use process.
  • the shape of the injection-molded hollow injection molded article is deformed or deformed by an external force during use The phenomenon can be prevented.
  • the reinforcing support ring separated from the cap member is inserted into the joint assembly, there is no restriction on demolding at the time of injection of the cap member, and the reinforcing support ring can be manufactured in various materials and shapes, It has a publicly available advantage.
  • FIG. 1 is a flowchart showing a sequential manufacturing process of a hollow sphere-shaped formed body through a method of manufacturing a hollow injection molded article proposed as a preferred embodiment of the present invention
  • FIG. 2 is a sectional view showing the outer configuration and the sectional configuration of a hollow half-mold formed by the method of manufacturing a hollow injection molded article proposed in the preferred embodiment of the present invention
  • FIGS. 3 to 4 are schematic views showing a manufacturing process of a hollow injection molded article proposed as a preferred embodiment of the present invention
  • FIG. 5 is a state view showing a state in which a strap is fastened and fixed to a hollow half-shaped body proposed as a preferred embodiment of the present invention.
  • FIG. 1 is a flowchart showing a sequential manufacturing process of a hollow sphere-shaped formed body through a method of manufacturing a hollow injection molded article proposed as a preferred embodiment of the present invention.
  • Fig. 2 is a cross- Figs. 3 to 4 are schematic views showing a manufacturing process of a hollow injection molded article proposed as a preferred embodiment of the present invention.
  • Fig. 3 is a cross- And FIG. 5 is a state view showing a state in which a strap is fastened and fixed to a hollow half-mold assembly proposed as a preferred embodiment of the present invention.
  • the hollow injection-molded article to be molded by the method of producing a hollow injection-molded article according to the present invention is characterized in that a spoiler or a hollow bumper guard in which a hollow portion 10a is formed in order to secure light weight and stable buoyancy,
  • a hollow injection molded article in the form of a hollow sphere forming body 1 is taken as an example in the present embodiment, in which a hollow sphere body or a buoy body is floated on a marine or farming site shown in Fig.
  • the method of manufacturing a hollow half-mold formed body 1 according to the present invention is characterized in that at least two cap members 11 and 12 having openings 11a and 12a are brought into close contact with each other as shown in FIGS. 1 and 3 to 4,
  • the insert assembly 10 is disposed in the injection mold 200 to insert the joint portion 13 of the joint assembly 10 into the partial injection space 220 of the injection mold 200 S 30);
  • the melt P is injected through the gate 230 into the partial injection space 220 of the partial injection mold 200 in which the joint part 13 of the joint assembly 10 is exposed and then cooled to form the joint assembly 10 And a partial injection molding step (S 40) in which the melt P injected into the outer wall of the joint portion 13 of the joint portion 13 forms an injection molded sealing band portion 20.
  • an injection molding process (S 10) is performed on the injection molding die 100 to form a pair of cap members 11 and 12 having openings 11a and 12a formed on one side thereof, And then the opening portions 11a and 12a of the injection molded pair of cap members 11 and 12 are brought into close contact with each other so as to face each other to form a hollow joint assembly 10.
  • the pair of cap members 11 and 12 can be connected to each other through taping, bonding, ultrasonic fusion, or elastic bonding between the closely-fitted openings 11a and 12a. As described later, It is also possible to join the divided cap members 11,
  • the reinforcing supporting ring 30 is inserted between the openings 11a and 12a of the cap members 11 and 12 as described later, (11, 12) form a mutually joined joint assembly (10).
  • the molding grooves 14 are formed on the surfaces of the openings 11a, 12a of the cap members 11, 12 forming the joint portion 13 so as to be recessed in a stepped structure,
  • the molding groove 14 is recessed in the joint portion 13 of the joint assembly 10 formed by joining the cap members 11 and 12.
  • a partial injection process is performed in the molding cavity 14 of the thus formed hollow joint assembly 10 to form a sealing band portion 20 injected into the molding cavity 14 and partially injection-molded on the surface of the joint portion, So that the joint part 13 is formed by the hollow band part 20 so as to be sealed and reinforced.
  • the insert process (S30) and the partial injection molding process (S40) are performed by inserting and arranging the joint assembly (10) molded by the assembly into the partial injection mold (200)
  • the molten material is injected into the surface of the joint portion 13 through the molding groove portion 14 of the joint assembly 10 so that the seal band portion 20 in which the melt is partially injection molded on the outer wall of the joint portion 13 of the joint assembly 10, Are integrally formed.
  • a portion of the joint assembly 10 excluding the joint portion 13 forming the sealing band portion 20 through partial injection molding is fixedly positioned in the injection mold 200 so as to form the joint portion 13, So that a precise partial injection molding is achieved on the surface of the mold.
  • the partial injection mold 200 includes a cap fixing space 210 for entirely enclosing the outer walls of the cap members 11 and 12 constituting the joint assembly 10, 13 and the molding groove 14 are partitioned so that the joint assembly 10 in which the joint portion 13 is partially injection molded is fixedly fixed in the injection mold 200 do.
  • the joint assembly 10 is partly injection-molded on the locally exposed joint part 13 in a state where the joint assembly 10 is fixed in the injection molding metal mold 200 to form the seal band part 20 in the joint assembly 10
  • the joint assembly 10 is partly injection-molded in a state in which the joint assembly 10 is fixed in the injection mold 200 so as to have a uniform thickness.
  • the joint assembly 10 has a uniform thickness and durability .
  • Urethane, silicone, rubber, EVA, PVC, elastomer, etc. can be adopted.
  • a melt P made of the same polyethylene resin as the material constituting the joint assembly 10 is injected so that a sealing band portion 20 made of polyethylene resin is attached to the joint portion 13 of the joint assembly 10, .
  • the sealing band portion 20 is formed by being injected into the molding groove portion 14 formed to be recessed in the joint portion 13 of the hollow joint assembly 10, so that the hollow band shaped body 20 does not protrude from the outer wall of the hollow shaped- .
  • the joint portions 10a and 10b of the joint assembly 10, which are formed by joining the openings 11a and 12a of the cap members 11 and 12 to each other through the partial injection, 13 may be caused to be depressed by the injection pressure of the melt P injected in the partial injection process.
  • cap members 11, 12 it is also possible to increase the thickness of the cap members 11, 12 to reinforce the strength, or to increase the durability of the cap member by integrally forming a reinforcing bar in the cap member during injection molding.
  • the reinforcing supporting ring 30 is formed in a shape in which a plurality of supporting rods 32 are arranged in a radiation structure inside a supporting ring member 31 which is in contact with the inner diameters of the openings 11a and 12a of the cap members 11 and 12 And may be made of various materials such as a metal material such as aluminum and a plastic material.
  • the reinforcing supporting rings 30 formed through the injection molding are inserted into the inner diameters of the openings 11a and 12a of the cap members 11 and 12, So that the joints and the inner portions of the joint portions of the cap members 11 and 12 are supported.
  • the reinforcing supporting ring 30 is inserted between the inner diameters of the openings 11a and 12a of the cap members 11 and 12 which face each other to form a pair of caps
  • the hollow coupling assembly 10 is formed by joining the members 11 and 12 so that the inner diameter portion is supported by the single reinforcing support ring 30 at each cap member 11 and 12 at this time.
  • the hollow joint assembly 10 in which the reinforcing support ring 30 is disposed between the inner diameters of the openings 11a and 12a of the pair of cap members 11 and 12 as in the present embodiment has the inner diameter of the joint portion 13 And is supported and reinforced by the supplemental reinforcing supporting ring (30).
  • cap members 11 and 12 which are manufactured in the same shape, can be stably stitched by joining the cap members 11 and 12 through the reinforcing support ring 30, It is possible to manufacture the hollow joint assembly by joining the cap members 11 and 12, which are formed in a single shape.
  • the cap members 11 and 12 which are formed by forming the sealing band portion 20 on the outer wall through the partial injection molding without forming the reinforcing bar integrally with the inner diameter portion of the cap members 11 and 12 as in this embodiment,
  • the cap members 11 and 12 and the separately formed reinforcing support ring 30 are disposed in the inner diameters of the openings 11a and 12a of the cap member 30,
  • the reinforcing support ring 30 has a commonality that can be installed in the inner diameters of various cap members.
  • a unique strap structure (not shown) for strapping and fixing the strap rope L to the cap members 11, So that the strap rope L is stably fixed at the predetermined position of the hollow preform 1 so that the problem of the strap rope L being released from the hollow sphere forming body can be solved.
  • the fixing piece 15 having the fixing hole 15a passing through the strap rope L is formed on the outer wall of the cap members 11, 12 constituting the hollow joint assembly 10, And a fastening groove 16 for housing and enclosing the outer wall of the strap rope L passing through the fastening piece 15 is integrally formed between the fastening pieces 15.
  • the fixing member 15 and the catching groove 16 in which the fixing hole 15a is formed are integrally formed in the injection molding process of the cap member through the injection mold so as to be integrally formed with the cap member.
  • the hollow half-mold formed body 1 including the cap members 11 and 12 having the above-mentioned strap rope fixing structure has a structure in which the strap rope 12 wound around the outer wall of the cap members 11 and 12 through the fixing piece 15 L of the strap rope L is received in the tearing groove 16 and secured thereto. As a result, the fixation of the right position of the strap rope L and the occurrence of friction of the strap rope L by external interference are suppressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a method for manufacturing a hollow buoy molded product, and a hollow buoy molded product manufactured thereby and, more specifically, to a method for manufacturing a hollow buoy molded product through injection molding, and a hollow buoy molded product manufactured thereby.

Description

중공 사출 성형품의 제조방법 및 이를 이용하여 제조된 중공 사출 성형품Process for producing hollow injection molded article and hollow injection molded article produced therefrom
본 발명은 중공 사출 성형품의 제조방법과 이를 이용하여 제조된 중공 사출 성형품에 관한 것으로, 더욱 상세하게는 사출 성형을 통해 중공 사출 성형품을 제조하는 방법과, 이를 이용하여 제조된 중공 사출 성형품에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of producing a hollow injection molded article and a hollow injection molded article manufactured using the same, and more particularly, to a method of producing a hollow injection molded article through injection molding and a hollow injection molded article .
일반적으로, 차량용 스포일러(Spoiler), 범퍼가드, 사이드스텝, 일부 자동차 부품 등과 같이 기계적으로 높은 강도와 경량화를 요구하는 속이 빈 형태의 종공품들은 전체 성형성이 중시되는 관계로, 소재의 절감과 경량화를 확보하기 위한 다양한 성형방법이 강구되어 왔다.Generally, since the hollow form articles requiring high mechanical strength and light weight, such as spoilers for vehicles, bumper guards, side steps, and some automobile parts, are important in terms of overall formability, Various molding methods have been proposed.
그리고, 최근에는 스티로폼으로 이루어진 발포형 부구 성형체를 대체하기 위한 플라스틱 재질로 제작된 중공형 부구 성형체가 개발되어 시중에 활발히 보급되고 있는 실정이다.In recent years, a hollow billet body made of a plastic material has been developed to replace the foamed billet body made of styrofoam, and it has been widely used in the market.
상기 자동차 분야에서 생산되는 중공형 부품들이나 해양분야에 주로 사용되는 중공형 부구 성형체의 대표적인 성형방법으로는, 분할 성형된 한 쌍의 사출몸체를 초음파나 본딩을 등을 통해 이음하여, 내부에 밀폐된 중공부가 형성된 성형품을 형성하는 것이다.As a representative molding method of a hollow molded body which is mainly used in the hollow parts produced in the automobile field or in the marine field, a pair of split injection molded bodies are connected through ultrasonic waves, bonding or the like, Thereby forming a molded product having a hollow portion.
그러나, 이러한 중공 성형품들은 반복적인 진동이나 충격이 가해지면 사출몸체의 이음부위가 훼손되고, 결과적으로 중공부의 안정된 밀폐상태가 훼손되는 한계가 있고, 또 초음파나 본딩을 통한 이음이 가능한 소재의 제약으로 인하여 내구성을 충족하기 어려웠다.However, if repeated vibration or impact is applied to these hollow molded products, the joint portion of the injection body is damaged, and as a result, there is a limit that the stable sealing state of the hollow portion is damaged, and also there is a restriction of the material which can be joined by ultrasonic wave or bonding It was difficult to meet durability.
특히, 대표적인 중공 성형품인 중공형 부구 성형체는 내부에 형성된 중공부의 안정된 밀폐상태가 형성되어야 충분한 부력을 갖는다.Particularly, a typical hollow molded article, which is a hollow molded body, has sufficient buoyancy to form a stable sealed state of a hollow portion formed therein.
그런데, 운반이나 사용과정, 특히 주위 기온이 낮은 겨울철에 외부 충격에 의해 이음상태가 불량해지거나 몸체가 국부적으로 파손되면 중공부의 밀폐상태가 훼손되고, 중공부의 밀폐가 훼손되면 중공부 내에 물이 유입되어 부력을 상실하여서, 수면에 부양되는 본래의 기능을 수행하기 어려울 뿐 아니라, 안전성 측면에서도 치명적인 문제점이 야기할 수 있다.However, if the connection state is poor due to external impact during the transportation or use process, especially during the winter when the ambient temperature is low, or if the body is partially damaged, the airtightness of the hollow portion is damaged. If the airtightness of the hollow portion is damaged, The buoyant force is lost, so that it is difficult to perform the original function of supporting the surface of the water, and it may cause a fatal problem in terms of safety.
상기한 문제점을 해소하기 위해 안출된 본 발명의 목적은, 중공형 부구 성형체나 범퍼가드, 사이드 스텝 등 사출 성형을 통해 제조하는 것으로, 특히 이음부위의 안정적인 보강과 밀폐가 이루어져 향상된 내구성이 확보되도록 한 중공 사출 성형품의 제조방법과, 이를 이용하여 제조된 중공 사출 성형품을 제공함에 있다.The object of the present invention, which is devised to overcome the above-described problems, is to provide an injection molding machine, which is manufactured through injection molding such as a hollow half mold, a bumper guard, and a side step, And a hollow injection molded article produced by using the hollow injection molded article.
상기한 목적은, 본 발명에서 제공되는 하기 구성에 의해 달성된다.The above object is achieved by the following constitutions provided in the present invention.
본 발명에 따른 중공 사출 성형품의 제조방법은,In the method of producing a hollow injection molded article according to the present invention,
개구부가 형성된 둘 이상의 캡부재를 상호 밀착시켜, 내부에 중공부가 형성되고 캡부재 사이에 이음부위가 형성된 이음 조립체를 형성하는 이음 조립체 형성공정과;Forming a joint assembly in which two or more cap members having openings are in close contact with each other to form a joint assembly having a hollow portion formed therein and a joint portion formed between the cap members;
상기 이음 조립체를 부분 사출금형 내에 배치하여, 이음 조립체의 이음부위를 부분 사출금형에 형성된 부분 사출공간 내에 위치시키는 인서트 공정; 및An insert step of disposing the joint assembly in a partial injection mold to position a joint part of the joint assembly in a partial injection space formed in the partial injection mold; And
상기 이음 조립체의 이음부위가 노출된 부분 사출금형의 부분 사출공간 내에 게이트를 통해 용융물을 주입시켜, 적어도 이음 조립체의 이음부위의 외벽에 주입된 용융물이 사출 성형된 밀폐 밴드부를 형성하는 부분 사출 성형공정을 포함하여 구성된 것을 특징으로 한다.Wherein a melt is injected through a gate into a partial injection space of a partially injection mold in which a joint part of the joint assembly is exposed to form a seal band part in which a molten material injected into an outer wall of a joint part of at least a joint assembly forms an injection- And a control unit.
바람직하게는, 상기 이음 조립체 형성공정에서, 상호 마주하는 캡부재들의 이음부위의 내경에는 보강 지지링을 삽입하여, 상기 이음 조립체의 이음부위는 보강 지지링에 의해 내경이 지지되어서, Preferably, in the step of forming the joint assembly, a reinforcing support ring is inserted into the inner diameter of a joint part of the mutually facing cap members, the joint part of the joint assembly is supported by the reinforcing support ring,
상기 부분 사출 성형공정에서 이음 조립체는 이음부위에 관통된 보강 지지링에 의해 내경이 지지되어 용융물의 사출압에 의해 이음부위가 함몰되는 현상이 방지되는 한편,In the partial injection molding process, the inner assembly is supported by the reinforcing support ring penetrating the joint portion to prevent the joint portion from being depressed by the injection pressure of the melt,
상기 부분 사출 성형공정을 마친 중공 사출 성형품의 이음부위는, 이음부위의 내경에 삽입된 보강 지지링에 의해 내경부가 지지하여 고정되고, 이음부위의 외경에 부분 사출 성형된 밀폐 밴드부에 의해 외경부가 융착하여 고정되어서, 상기 이음부위는 보강 지지링과 밀폐 밴드부에 의해 복층으로 지지된 상태로 이음되도록 구성된 것을 특징으로 한다.Wherein the joint portion of the hollow injection molded product after the partial injection molding process is supported and fixed by the reinforcing support ring inserted in the inner diameter of the joint portion and the outer diameter portion is fusion bonded by the seal band portion, So that the joint portion is joined in a state of being supported in multiple layers by the reinforcing support ring and the seal band portion.
보다 바람직하게는, 상기 보강 지지링은 캡부재의 개구부 내경에 외접하는 지지링 부재의 내부에 복수의 지지대들이 방사구조로 배치된 형태로 이루어진다.More preferably, the reinforcing supporting ring is formed in such a manner that a plurality of supporting rods are arranged in a radiation structure inside a supporting ring member which is in contact with the inner diameter of the opening of the cap member.
그리고, 상호 마주하여 이음되는 한 쌍의 캡부재의 개구부 사이에는, 단일 보강 지지링이 분할 배치되어, 단일 보강 지지링을 통해, 캡부재의 이음과, 각 캡부재 개구부가 보강 지지되도록 구성된다.Further, a single reinforcing supporting ring is divided and arranged between the openings of the pair of cap members which are mutually facing each other, and the joint of the cap member and each cap member opening are reinforced and supported via a single reinforcing supporting ring.
그리고, 상기 캡부재들은 개구부를 상호 밀착시킨 다음, 상기 밀착된 개구부 사이를, 본딩, 또는 초음파 융착, 또는 테이핑을 통해 상호 이음하여, 마주하는 개구부가 상호 이음된 이음 조립체를 형성하도록 구성된다.Then, the cap members are constructed so that the openings are brought into close contact with each other, and then the adjacent openings are mutually joined through bonding, ultrasonic welding, or taping so that the opposed openings form a mutually joined joint assembly.
한편, 본 발명에 따른 중공 사출 성형품은 상기 본 발명의 제조방법에 의해 제조된 것을 특징으로 한다.On the other hand, the hollow injection molded article according to the present invention is characterized by being manufactured by the production method of the present invention.
전술한 바와 같이 본 발명에서는, 복수의 캡부재의 개구부를 서로 이은 이음 조립체의 이음부위에 국부적으로 부분 사출 성형공정을 실시하여, 이음부위에 부분 사출 성형된 밀폐 밴드부가 일체로 형성된 중공 사출 성형품을 제조하는 제조방법과 이를 통해 성형된 중공 사출 성형품을 제공한다.As described above, according to the present invention, a partial injection molding process is locally performed at a joint part of a joint assembly that joins openings of a plurality of cap members to form a hollow injection molded product in which a seal- And a hollow injection molded product molded by the method.
이와 같이 부분 사출 성형공정을 실시하여 이음 조립체에 밀폐 밴드부를 형성하면, 이음 조립체는 부분 사출금형 내에 정형화되게 고정된 상태에서 이음부위의 부분 사출이 이루어지고, 결과적으로 균일한 두께의 외벽을 갖게 되므로, 전체적으로 균일한 강도를 포함하는 내구성을 갖는다.When the sealing band portion is formed in the joint assembly by performing the partial injection molding process as described above, the joint assembly is partially injected in a state where the joint assembly is fixedly fixed in the injection mold, and as a result, the joint assembly has an outer wall of uniform thickness , And has durability including uniformly high strength as a whole.
특히, 본 발명에서는 상기 캡부재를 이음시켜 이음 조립체를 형성함에 있어, 상기 상호 밀착되는 캡부재의 개구부 내에 보강 지지링을 삽입 배치하여서, 부분 사출 성형공정시 용융물의 사출압에 의해 캡부재의 개구부가 함몰되는 현상과, 사용과정에 발생되는 외력에 의해 캡부재의 개구부가 함몰되는 현상을 방지하고 있으며, 결과적으로 사출 성형된 중공 사출 성형품의 형상이 기형적으로 성형되거나 사용과정에 외력에 의해 손상되는 현상이 예방될 수 있다.Particularly, in the present invention, in forming the joint assembly by joining the cap member, a reinforcing support ring is inserted and arranged in the opening of the cap member to be in close contact with each other, so that the opening of the cap member And the opening of the cap member is prevented from being depressed due to an external force generated during the use process. As a result, the shape of the injection-molded hollow injection molded article is deformed or deformed by an external force during use The phenomenon can be prevented.
그리고, 상기 이음 조립체 내에, 캡부재와 분리 성형된 보강 지지링을 삽입하면, 캡부재의 사출시 탈형의 제약이 발생되지 아니하고, 또 상기 보강 지지링은 다양한 재질이나 형상으로 제작될 수 있고, 또 공용된 사용이 가능한 이점을 갖는다.When the reinforcing support ring separated from the cap member is inserted into the joint assembly, there is no restriction on demolding at the time of injection of the cap member, and the reinforcing support ring can be manufactured in various materials and shapes, It has a publicly available advantage.
도 1은 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조방법을 통한 중공형 부구 성형체의 순차적인 제조과정을 보여주는 흐름도이고,FIG. 1 is a flowchart showing a sequential manufacturing process of a hollow sphere-shaped formed body through a method of manufacturing a hollow injection molded article proposed as a preferred embodiment of the present invention,
도 2는 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조방법에 의해 성형된 중공형 부구 성형체의 외형 구성과 단면 구성을 각각 보여주는 것이고, FIG. 2 is a sectional view showing the outer configuration and the sectional configuration of a hollow half-mold formed by the method of manufacturing a hollow injection molded article proposed in the preferred embodiment of the present invention,
도 3 내지 도 4는 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조과정을 모식적으로 보여주는 것이고, FIGS. 3 to 4 are schematic views showing a manufacturing process of a hollow injection molded article proposed as a preferred embodiment of the present invention,
도 5는 본 발명에서 바람직한 실시예로 제안하고 있는 중공형 부구 성형체에 결박로프를 결박시켜 고정한 상태를 보여주는 사용 상태도이다.FIG. 5 is a state view showing a state in which a strap is fastened and fixed to a hollow half-shaped body proposed as a preferred embodiment of the present invention.
이하, 첨부된 도면을 참조하여 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조방법을 상세히 설명하기로 한다.Hereinafter, a method of manufacturing a hollow injection molded article, which is a preferred embodiment of the present invention, will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조방법을 통한 중공형 부구 성형체의 순차적인 제조과정을 보여주는 흐름도이고, 도 2는 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조방법에 의해 성형된 중공형 부구 성형체의 외형 구성과 단면 구성을 각각 보여주는 것이고, 도 3 내지 도 4는 본 발명에서 바람직한 실시예로 제안하고 있는 중공 사출 성형품의 제조과정을 모식적으로 보여주는 것이고, 도 5는 본 발명에서 바람직한 실시예로 제안하고 있는 중공형 부구 성형체에 결박로프를 결박시켜 고정한 상태를 보여주는 사용 상태도이다.Fig. 1 is a flowchart showing a sequential manufacturing process of a hollow sphere-shaped formed body through a method of manufacturing a hollow injection molded article proposed as a preferred embodiment of the present invention. Fig. 2 is a cross- Figs. 3 to 4 are schematic views showing a manufacturing process of a hollow injection molded article proposed as a preferred embodiment of the present invention. Fig. 3 is a cross- And FIG. 5 is a state view showing a state in which a strap is fastened and fixed to a hollow half-mold assembly proposed as a preferred embodiment of the present invention.
본 발명에 따른 중공 사출 성형품의 제조방법에 의해 성형되는 중공 사출 성형품은, 경량성과 안정된 부력을 확보하기 위해 내부에 중공부(10a)가 형성된 스포일러나 중공의 범퍼가드, 중공의 사이드 스텝 등의 자동차 부품이나, 도 2에 도시된 해상이나 양식장 등지에 부양되는 부구 성형체나 부표 등 내부에 중공부가 형성된 물품으로, 본 실시예에서는 중공형 부구 성형체(1) 형태의 중공 사출 성형품을 예로 들어 설명한다.The hollow injection-molded article to be molded by the method of producing a hollow injection-molded article according to the present invention is characterized in that a spoiler or a hollow bumper guard in which a hollow portion 10a is formed in order to secure light weight and stable buoyancy, A hollow injection molded article in the form of a hollow sphere forming body 1 is taken as an example in the present embodiment, in which a hollow sphere body or a buoy body is floated on a marine or farming site shown in Fig.
본 발명에 따른 중공형 부구 성형체(1)의 제조방법은, 도 1과 도 3 내지 도 4에서 보는 바와 같이 개구부(11a, 12a)가 형성된 둘 이상의 캡부재(11, 12)를 상호 밀착시켜, 내부에 중공부(10a)가 형성되고 개구부(11a, 12a) 사이에 이음부위(13)가 형성된 이음 조립체(10)를 형성하는 이음 조립체 형성공정(S 20)과;The method of manufacturing a hollow half-mold formed body 1 according to the present invention is characterized in that at least two cap members 11 and 12 having openings 11a and 12a are brought into close contact with each other as shown in FIGS. 1 and 3 to 4, A joint assembly forming step (S 20) of forming a joint assembly (10) in which a hollow portion (10a) is formed and a joint portion (13) is formed between the openings (11a, 12a);
상기 이음 조립체(10)를 부분 사출금형(200) 내에 배치하여, 이음 조립체(10)의 이음부위(13)를 부분 사출금형(200)의 부분 사출공간(220) 내에 노출되게 위치시키는 인서트 공정(S 30); 및The insert assembly 10 is disposed in the injection mold 200 to insert the joint portion 13 of the joint assembly 10 into the partial injection space 220 of the injection mold 200 S 30); And
상기 이음 조립체(10)의 이음부위(13)가 노출된 부분 사출금형(200)의 부분 사출공간(220) 내에 게이트(230)를 통해 용융물(P)을 주입시킨 다음 냉각시켜, 이음 조립체(10)의 이음부위(13) 외벽에 주입된 용융물(P)이 사출 성형된 밀폐 밴드부(20)를 형성하는 부분 사출 성형공정(S 40)을 포함한다.The melt P is injected through the gate 230 into the partial injection space 220 of the partial injection mold 200 in which the joint part 13 of the joint assembly 10 is exposed and then cooled to form the joint assembly 10 And a partial injection molding step (S 40) in which the melt P injected into the outer wall of the joint portion 13 of the joint portion 13 forms an injection molded sealing band portion 20.
본 실시예에서는 도 3에서 보는 바와 같이 사출 성형금형(100)에서 사출 성형공정(S 10)을 실시하여 일측에 개구부(11a, 12a)가 각각 형성된 한 쌍의 캡부재(11, 12)를 성형한 다음, 상기 사출 성형된 한 쌍의 캡부재(11, 12)의 개구부(11a, 12a)를 상하 마주하도록 밀착시켜서 중공형 이음 조립체(10)를 형성하고 있다.3, an injection molding process (S 10) is performed on the injection molding die 100 to form a pair of cap members 11 and 12 having openings 11a and 12a formed on one side thereof, And then the opening portions 11a and 12a of the injection molded pair of cap members 11 and 12 are brought into close contact with each other so as to face each other to form a hollow joint assembly 10. [
이때, 상기 한 쌍의 캡부재(11, 12)들은 밀착된 개구부(11a, 12a) 사이에 테이핑이나, 본딩, 또는 초음파 융착, 또는 탄성 견착을 통해 이음이 가능하며, 후술되는 바와 같이 보강 지지링(30)을 통해서도 분할 구성된 캡부재(11, 12)들을 이음하는 것도 가능하다.At this time, the pair of cap members 11 and 12 can be connected to each other through taping, bonding, ultrasonic fusion, or elastic bonding between the closely-fitted openings 11a and 12a. As described later, It is also possible to join the divided cap members 11,
다만, 본 실시예에서는 후술되는 바와 같이 보강 지지링(30)을 캡부재(11, 12)의 개구부(11a, 12a) 사이에 진입시켜, 보강 지지링(30)에 의해 이들 분리 성형된 캡부재(11, 12)가 상호 이음된 이음 조립체(10)를 형성하도록 한 것을 최적의 실시예로 제안하고 있다.However, in the present embodiment, the reinforcing supporting ring 30 is inserted between the openings 11a and 12a of the cap members 11 and 12 as described later, (11, 12) form a mutually joined joint assembly (10).
그리고, 본 실시예에서는 상기 이음부위(13)를 형성하는 각 캡부재(11, 12)의 개구부(11a, 12a)의 표면에는 성형홈부(14)를 단차구조로 요입되게 형성하여, 한 쌍의 캡부재(11, 12)를 이음하여 형성된 이음 조립체(10)의 이음부위(13)에는 성형홈부(14)가 요입하여 형성되도록 한다.In this embodiment, the molding grooves 14 are formed on the surfaces of the openings 11a, 12a of the cap members 11, 12 forming the joint portion 13 so as to be recessed in a stepped structure, The molding groove 14 is recessed in the joint portion 13 of the joint assembly 10 formed by joining the cap members 11 and 12.
본 실시예에서는 이와 같이 형성된 중공형 이음 조립체(10)의 성형홈부(14) 내에 부분 사출공정을 실시하여, 성형홈부(14) 내에 주입되어 이음부위의 표면에 부분 사출 성형된 밀폐 밴드부(20)에 의해 고착되어서, 이음부위(13)가 밀폐 밴드부(20)에 의해 밀폐 및 보강된 중공형 부구 성형체(1)을 형성하도록 한다.In this embodiment, a partial injection process is performed in the molding cavity 14 of the thus formed hollow joint assembly 10 to form a sealing band portion 20 injected into the molding cavity 14 and partially injection-molded on the surface of the joint portion, So that the joint part 13 is formed by the hollow band part 20 so as to be sealed and reinforced.
상기 인서트 공정(S 30) 및 부분 사출 성형공정(S 40)은, 도 4와 같이 상기 조립에 의해 성형된 이음 조립체(10)를 부분 사출금형(200) 내에 인서트시켜 배치한 다음, 상기 인서트된 이음 조립체(10)의 성형홈부(14)를 통해 이음부위(13)의 표면에 용융물을 주입시켜서, 이음 조립체(10)의 이음부위(13) 외벽에 용융물이 부분 사출 성형된 밀폐 밴드부(20)를 일체로 형성한다.The insert process (S30) and the partial injection molding process (S40) are performed by inserting and arranging the joint assembly (10) molded by the assembly into the partial injection mold (200) The molten material is injected into the surface of the joint portion 13 through the molding groove portion 14 of the joint assembly 10 so that the seal band portion 20 in which the melt is partially injection molded on the outer wall of the joint portion 13 of the joint assembly 10, Are integrally formed.
이때, 상기 이음 조립체(10)에서 부분 사출 성형을 통해 밀폐 밴드부(20)를 형성하는 이음부위(13)를 제외한 부위는, 부분 사출금형(200) 내에 정형화되게 위치 고정되어서, 이음부위(13)의 표면에 정교한 부분 사출성형이 이룩되도록 한다.At this time, a portion of the joint assembly 10 excluding the joint portion 13 forming the sealing band portion 20 through partial injection molding is fixedly positioned in the injection mold 200 so as to form the joint portion 13, So that a precise partial injection molding is achieved on the surface of the mold.
즉, 상기 부분 사출금형(200)에는 이음 조립체(10)를 구성하는 캡부재(11, 12)의 외벽을 전체적으로 감싸 고정하는 캡 고정공간(210)과, 상기 이음 조립체(10)의 이음부위(13) 및 성형홈부(14)를 구획되게 수용하는 부분 사출공간(220)이 형성되어서, 이음부위(13)가 부분 사출 성형되는 이음 조립체(10)가 부분 사출금형(200) 내에 정형화되게 고정되도록 한다.That is, the partial injection mold 200 includes a cap fixing space 210 for entirely enclosing the outer walls of the cap members 11 and 12 constituting the joint assembly 10, 13 and the molding groove 14 are partitioned so that the joint assembly 10 in which the joint portion 13 is partially injection molded is fixedly fixed in the injection mold 200 do.
이와 같이 이음 조립체(10)를 사출 성형금형(200) 내에 정형화되게 고정시킨 상태에서, 국부적으로 노출된 이음부위(13)에 부분 사출 성형을 실시하여 이음 조립체(10)에 밀폐 밴드부(20)를 형성하면, 상기 이음 조립체(10)는 부분 사출금형(200) 내에 정형화되게 고정된 상태에서 이음부위의 부분 사출이 이루어지고, 결과적으로 균일한 두께의 외벽을 갖게 되므로 전체적으로 균일한 강도를 포함하는 내구성을 갖게 된다.In this way, the joint assembly 10 is partly injection-molded on the locally exposed joint part 13 in a state where the joint assembly 10 is fixed in the injection molding metal mold 200 to form the seal band part 20 in the joint assembly 10 The joint assembly 10 is partly injection-molded in a state in which the joint assembly 10 is fixed in the injection mold 200 so as to have a uniform thickness. As a result, the joint assembly 10 has a uniform thickness and durability .
그리고, 상기 부분 사출 성형 공정(S 40)에 의해 이음 조립체(10)의 이음부위(13)의 표면에 형성된 성형홈부(14) 내에 주입되어 밀폐 밴드부(20)를 형성하는 용융물(P)로는, 우레탄, 실리콘, 고무, EVA, PVC, 엘라스토머 등 다양한 재질이 채택될 수 있다.The melt P to be injected into the molding groove portion 14 formed on the surface of the joint portion 13 of the joint assembly 10 to form the sealing band portion 20 by the partial injection molding step (S 40) Urethane, silicone, rubber, EVA, PVC, elastomer, etc. can be adopted.
본 실시예에서는 상기 이음 조립체(10)를 구성하는 재질과 동일한 폴리 에틸렌 수지로 이루어진 용융물(P)을 주입시켜, 이음 조립체(10)의 이음부위(13)에 폴리에틸렌 수지로 이루어진 밀폐 밴드부(20)를 형성한다.In this embodiment, a melt P made of the same polyethylene resin as the material constituting the joint assembly 10 is injected so that a sealing band portion 20 made of polyethylene resin is attached to the joint portion 13 of the joint assembly 10, .
이때, 상기 밀폐 밴드부(20)는 중공형 이음 조립체(10)의 이음부위(13)에 요입되게 형성된 성형홈부(14) 내에 주입되어 형성된 관계로, 중공형 부구 성형체(1)의 외벽에 돌출되지 않게 된다.In this case, the sealing band portion 20 is formed by being injected into the molding groove portion 14 formed to be recessed in the joint portion 13 of the hollow joint assembly 10, so that the hollow band shaped body 20 does not protrude from the outer wall of the hollow shaped- .
한편, 본 실시예에 따르면, 상기 캡부재(11, 12)의 개구부(11a, 12a)를 상호 이음하여 형성되어 부분 사출을 통해 밀폐 밴드부(20)가 형성되는 이음 조립체(10)의 이음부위(13)는, 부분 사출과정에 주입되는 용융물(P)의 사출압에 의해 함몰되는 현상이 야기될 수 있다.According to the present embodiment, the joint portions 10a and 10b of the joint assembly 10, which are formed by joining the openings 11a and 12a of the cap members 11 and 12 to each other through the partial injection, 13 may be caused to be depressed by the injection pressure of the melt P injected in the partial injection process.
물론, 상기 캡부재(11, 12)의 두께를 두껍게 하여 강도를 보강하거나, 사출 성형시 캡부재 내에 보강대를 일체로 형성하여서 캡부재의 내구성을 증대시키는 것도 가능하다.Of course, it is also possible to increase the thickness of the cap members 11, 12 to reinforce the strength, or to increase the durability of the cap member by integrally forming a reinforcing bar in the cap member during injection molding.
그런데, 상기 캡부재 내에 보강대를 일체로 형성하면 사출 성형시 캡부재의 탈형의 제약이 발생되기도 하고, 또 사출성형 금형의 구조 및 형상이 복잡해지므로 제작 비용이 증가되고, 금속재, 플라스틱재 등 다양한 재질로 제작하기 어려운 한계성을 갖는다.However, if a reinforcing bar is integrally formed in the cap member, restrictions on demoulding of the cap member during injection molding may occur, and the structure and shape of the injection molding die may be complicated, resulting in an increase in manufacturing cost, It is difficult to fabricate it.
반면, 도 3과 같이 상기 캡부재(11, 12)의 개구부(11a, 12a)에 분리 성형된 보강 지지링(30)을 삽입하면, 도 4와 같이 부분 사출 성형과정에 발생되는 용융물(P)의 사출압력에 의해 캡부재(11, 12)의 개구부(11a, 12a)가 함몰되는 현상이 방지될 수 있다.3, when the reinforcing supporting ring 30 formed by separation molding is inserted into the openings 11a and 12a of the cap members 11 and 12, the melt P generated in the partial injection molding process as shown in FIG. The opening portions 11a, 12a of the cap members 11, 12 can be prevented from being depressed by the injection pressure of the cap member 11, 12.
여기서, 상기 보강 지지링(30)은 캡부재(11, 12)의 개구부(11a, 12a) 내경에 내접하는 지지링 부재(31)의 내부에 복수의 지지대(32)들이 방사구조로 배치된 형태로 이루어지며, 알루미늄 등의 금속재, 플라스틱재 등 다양한 재질로 제작될 수 있다.The reinforcing supporting ring 30 is formed in a shape in which a plurality of supporting rods 32 are arranged in a radiation structure inside a supporting ring member 31 which is in contact with the inner diameters of the openings 11a and 12a of the cap members 11 and 12 And may be made of various materials such as a metal material such as aluminum and a plastic material.
다만, 본 실시예에서는 상기 사출 성형을 통해 성형된 보강 지지링(30)을 상호 이음되는 캡부재(11, 12)의 개구부(11a, 12a) 내경에 삽입시켜서, 캡부재(11, 12)들의 이음과 캡부재(11, 12)의 이음부위의 내경 지지를 도모한다.However, in this embodiment, the reinforcing supporting rings 30 formed through the injection molding are inserted into the inner diameters of the openings 11a and 12a of the cap members 11 and 12, So that the joints and the inner portions of the joint portions of the cap members 11 and 12 are supported.
그리고, 본 실시예에서는 마주하여 이음되는 캡부재(11, 12)의 개구부(11a, 12a) 내경 사이에 보강 지지링(30)을 삽입시켜, 단일 보강 지지링(30)을 통해 한 쌍의 캡부재(11, 12)를 이음하여 중공형 이음 조립체(10)를 형성하고, 이때 각 캡부재(11, 12)는 단일 보강 지지링(30)에 의해 내경부가 지지되도록 한다.In the present embodiment, the reinforcing supporting ring 30 is inserted between the inner diameters of the openings 11a and 12a of the cap members 11 and 12 which face each other to form a pair of caps The hollow coupling assembly 10 is formed by joining the members 11 and 12 so that the inner diameter portion is supported by the single reinforcing support ring 30 at each cap member 11 and 12 at this time.
본 실시예와 같이 한 쌍의 캡부재(11, 12)의 개구부(11a, 12a) 내경 사이에 보강 지지링(30)을 배치한 중공형 이음 조립체(10)는, 이음부위(13)의 내경부가 보강 지지링(30)에 의해 지지되어 보강된다.The hollow joint assembly 10 in which the reinforcing support ring 30 is disposed between the inner diameters of the openings 11a and 12a of the pair of cap members 11 and 12 as in the present embodiment has the inner diameter of the joint portion 13 And is supported and reinforced by the supplemental reinforcing supporting ring (30).
결과적으로 부분 사출성형 중에 고압 주입되는 용융물(P)의 사출압에 의해 이음부위(13)가 함몰되는 현상이 예방되고, 결과적으로 안정된 형태성을 갖는 중공형 부구 성형체(10)의 제작이 가능하다.As a result, the phenomenon in which the joint portion 13 is depressed by the injection pressure of the melt P to be injected under high pressure during the partial injection molding is prevented, and as a result, it is possible to manufacture the hollow half-formed body 10 having stable morphology .
또한, 보강 지지링(30)을 통해 캡부재(11, 12)의 이음을 도모하면, 동일한 형상으로 제작된 캡부재(11, 12)를 안정되게 이음하는 것이 가능하므로, 단일 사출금형(100)을 통해 단일형상으로 제작된 캡부재(11, 12)를 이음하여 중공형 이음 조립체를 제조하는 것이 가능하다.In addition, since the cap members 11 and 12, which are manufactured in the same shape, can be stably stitched by joining the cap members 11 and 12 through the reinforcing support ring 30, It is possible to manufacture the hollow joint assembly by joining the cap members 11 and 12, which are formed in a single shape.
특히, 본 실시예와 같이 캡부재(11, 12)의 내경부에 보강대를 일체로 성형하여 형성하지 아니하고, 부분 사출 성형을 통해 외벽에 밀폐 밴드부(20)가 형성하는 캡부재(11, 12)의 개구부(11a, 12a) 내경에 캡부재(11, 12)들과 분리 성형된 보강 지지링(30)을 배치하면, 캡부재(30)의 사출 성형시 캡부재의 탈형이 간편하게 이룩되고, 또 상기 보강 지지링(30)은 다양한 캡부재의 내경에 설치가 가능한 공용성을 갖는다.Particularly, the cap members 11 and 12, which are formed by forming the sealing band portion 20 on the outer wall through the partial injection molding without forming the reinforcing bar integrally with the inner diameter portion of the cap members 11 and 12 as in this embodiment, The cap members 11 and 12 and the separately formed reinforcing support ring 30 are disposed in the inner diameters of the openings 11a and 12a of the cap member 30, The reinforcing support ring 30 has a commonality that can be installed in the inner diameters of various cap members.
이와 더불어, 본 실시예에서는 상기 제조방법을 통해 중공형 부구 성형체(1)를 제조함에 있어, 도 5와 같이 상기 캡부재(11, 12)에 결박로프(L)를 결박시켜 고정하는 독특한 결박구조를 형성하여서, 결박로프(L)가 중공형 부구 성형체(1)의 정위치에 안정되게 위치 고정되도록 구성함으로써, 결박로프(L)가 중공형 부구 성형체에서 이탈함에 따른 문제점이 해소되도록 한다.In addition, in the present embodiment, in manufacturing the hollow half-mold assembly 1 through the above-described manufacturing method, a unique strap structure (not shown) for strapping and fixing the strap rope L to the cap members 11, So that the strap rope L is stably fixed at the predetermined position of the hollow preform 1 so that the problem of the strap rope L being released from the hollow sphere forming body can be solved.
이를 위해, 본 실시예에서는 중공형 이음 조립체(10)를 구성하는 캡부재(11, 12)의 외벽에 결박로프(L)를 관통하는 고정공(15a)이 형성된 고정편(15)을 좌우 대칭되게 형성하고, 상기 고정편(15) 사이에는 고정편(15)을 관통한 결박로프(L)의 외벽을 수납하여 감싸는 견착홈(16)을 일체로 형성한다.To this end, in the present embodiment, the fixing piece 15 having the fixing hole 15a passing through the strap rope L is formed on the outer wall of the cap members 11, 12 constituting the hollow joint assembly 10, And a fastening groove 16 for housing and enclosing the outer wall of the strap rope L passing through the fastening piece 15 is integrally formed between the fastening pieces 15.
여기서, 상기 고정공(15a)이 형성된 고정편(15)과 견착홈(16)은 사출 금형을 통한 캡부재의 사출 성형공정시 일체로 형성되어서, 캡부재와 단일체로 이루어진다.The fixing member 15 and the catching groove 16 in which the fixing hole 15a is formed are integrally formed in the injection molding process of the cap member through the injection mold so as to be integrally formed with the cap member.
이러한 결박로프 고정구조를 갖는 캡부재(11, 12)를 포함하여 제작된 중공형 부구 성형체(1)는, 고정편(15)을 관통하여 캡부재(11, 12)의 외벽을 휘감은 결박로프(L)를 견착홈(16) 내에 수용시켜 견착 고정하고, 결과적으로 결박로프(L)의 정위치의 고정과 외부 간섭에 의한 결박로프(L)의 마찰 발생이 억제된다.The hollow half-mold formed body 1 including the cap members 11 and 12 having the above-mentioned strap rope fixing structure has a structure in which the strap rope 12 wound around the outer wall of the cap members 11 and 12 through the fixing piece 15 L of the strap rope L is received in the tearing groove 16 and secured thereto. As a result, the fixation of the right position of the strap rope L and the occurrence of friction of the strap rope L by external interference are suppressed.

Claims (4)

  1. 개구부가 형성된 둘 이상의 캡부재를 상호 밀착시켜, 내부에 중공부가 형성되고 캡부재 사이에 이음부위가 형성된 이음 조립체를 형성하는 이음 조립체 형성공정과;Forming a joint assembly in which two or more cap members having openings are in close contact with each other to form a joint assembly having a hollow portion formed therein and a joint portion formed between the cap members;
    상기 이음 조립체를 부분 사출금형 내에 배치하여, 이음 조립체의 이음부위를 부분 사출금형에 형성된 부분 사출공간 내에 위치시키는 인서트 공정; 및An insert step of disposing the joint assembly in a partial injection mold to position a joint part of the joint assembly in a partial injection space formed in the partial injection mold; And
    상기 이음 조립체의 이음부위가 노출된 부분 사출금형의 부분 사출공간 내에 게이트를 통해 용융물을 주입하여, 적어도 이음 조립체의 이음부위의 외벽에 주입된 용융물이 사출 성형된 밀폐 밴드부를 형성하는 부분 사출 성형공정을 포함하여 구성된 것을 특징으로 하는 중공 사출 성형품의 제조방법.Wherein the molten material injected into the outer wall of the joint portion of the joint assembly is injected through a gate into a partial injection molding space of the partially injection mold in which the joint portion of the joint assembly is exposed, Wherein the hollow injection molded article is formed by injection molding.
  2. 제 1항에 있어서, The method according to claim 1,
    상기 이음 조립체 형성공정에서, 상호 마주하는 캡부재들의 이음부위의 내경에는 보강 지지링을 삽입하여, 상기 이음 조립체의 이음부위는 보강 지지링에 의해 내경이 지지되어서, In the joint assembly forming step, a reinforcing support ring is inserted into the inner diameter of the joint part of the mutually facing cap members, and the inner diameter of the joint part of the joint assembly is supported by the reinforcing support ring,
    상기 부분 사출 성형공정에서 이음 조립체는 이음부위에 관통된 보강 지지링에 의해 내경이 지지되어 용융물의 사출압에 의해 이음부위가 함몰되는 현상이 방지되는 한편,In the partial injection molding process, the inner assembly is supported by the reinforcing support ring penetrating the joint portion to prevent the joint portion from being depressed by the injection pressure of the melt,
    상기 부분 사출 성형공정을 마친 중공 사출 성형품의 이음부위는, 이음부위의 내경에 삽입된 보강 지지링에 의해 내경부가 지지하여 고정되고, 이음부위의 외경에 부분 사출 성형된 밀폐 밴드부에 의해 외경부가 융착하여 고정되어서, 상기 이음부위는 보강 지지링과 밀폐 밴드부에 의해 복층으로 지지된 상태로 이음되도록 구성된 것을 특징으로 하는 중공 사출 성형품의 제조방법.Wherein the joint portion of the hollow injection molded product after the partial injection molding process is supported and fixed by the reinforcing support ring inserted in the inner diameter of the joint portion and the outer diameter portion is fusion bonded by the seal band portion, And the joint portion is joined so as to be supported by the reinforcing support ring and the sealing band portion in a multilayered manner.
  3. 제 2항에 있어서, 상기 보강 지지링은 지지링 부재의 내부에 복수의 지지대들이 방사구조로 배치된 형태로 이루어진 것을 특징으로 하는 중공형 부구 성형체의 제조방법.The method according to claim 2, wherein the reinforcing support ring is formed in a shape in which a plurality of support rods are disposed in a radiating structure inside the support ring member.
  4. 제 1항 내지 제 3항 중 어느 한 항에 따른 제조방법에 의해 제조되는 것을 특징으로 하는 중공 사출 성형품.A hollow injection molded article produced by the production method according to any one of claims 1 to 3.
PCT/KR2018/006053 2017-08-14 2018-05-29 Method for manufacturing injection blow molded product, and injection blow molded product manufactured thereby WO2019035538A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019565145A JP6816312B2 (en) 2017-08-14 2018-05-29 Manufacturing method of hollow injection molded product and hollow injection molded product manufactured by using it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0103162 2017-08-14
KR1020170103162A KR101831185B1 (en) 2017-08-14 2017-08-14 Method of manufacturing hollow molding, and hollow buoy using the same

Publications (1)

Publication Number Publication Date
WO2019035538A1 true WO2019035538A1 (en) 2019-02-21

Family

ID=61387020

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/006053 WO2019035538A1 (en) 2017-08-14 2018-05-29 Method for manufacturing injection blow molded product, and injection blow molded product manufactured thereby

Country Status (3)

Country Link
JP (1) JP6816312B2 (en)
KR (1) KR101831185B1 (en)
WO (1) WO2019035538A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101831185B1 (en) * 2017-08-14 2018-02-22 (주)중앙테크 Method of manufacturing hollow molding, and hollow buoy using the same
KR102636023B1 (en) * 2022-09-08 2024-02-13 (주) 중앙테크 Manhole structure having floating type safety mark

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215025A (en) * 1992-02-05 1993-08-24 Fuji Heavy Ind Ltd Manufacture of intake pipe made of resin
KR200309039Y1 (en) * 2002-12-26 2003-03-29 아시아테크주식회사 Protection equipment of float marine products culture using
KR20170001016U (en) * 2015-09-09 2017-03-17 황인균 Buoy having reinforcement structure for increasing pressure resistant
KR101740918B1 (en) * 2016-12-28 2017-05-29 (주) 중앙테크 Manufacturing method of hollow buoy
KR20170063467A (en) * 2017-05-19 2017-06-08 신기봉 Float for farming
KR101831185B1 (en) * 2017-08-14 2018-02-22 (주)중앙테크 Method of manufacturing hollow molding, and hollow buoy using the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0834032A (en) * 1994-07-23 1996-02-06 Inoac Corp Hollow molded product and production thereof
JP3748506B2 (en) * 1999-05-20 2006-02-22 キヤノン株式会社 Process cartridge and process cartridge assembly method
JP2004025561A (en) * 2002-06-24 2004-01-29 Kitsuta Seisan Kogyosho:Kk Method for manufacture of resin-made oil storage tank for power steering oil hydraulic pump of automobile
JP2005131902A (en) * 2003-10-30 2005-05-26 Hitachi Ltd Injection welding molding method for resin molding
JP6334616B2 (en) * 2016-07-12 2018-05-30 株式会社日本製鋼所 Method for molding hollow molded article and molding apparatus for hollow molded article

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215025A (en) * 1992-02-05 1993-08-24 Fuji Heavy Ind Ltd Manufacture of intake pipe made of resin
KR200309039Y1 (en) * 2002-12-26 2003-03-29 아시아테크주식회사 Protection equipment of float marine products culture using
KR20170001016U (en) * 2015-09-09 2017-03-17 황인균 Buoy having reinforcement structure for increasing pressure resistant
KR101740918B1 (en) * 2016-12-28 2017-05-29 (주) 중앙테크 Manufacturing method of hollow buoy
KR20170063467A (en) * 2017-05-19 2017-06-08 신기봉 Float for farming
KR101831185B1 (en) * 2017-08-14 2018-02-22 (주)중앙테크 Method of manufacturing hollow molding, and hollow buoy using the same

Also Published As

Publication number Publication date
JP2020506099A (en) 2020-02-27
KR101831185B1 (en) 2018-02-22
JP6816312B2 (en) 2021-01-20

Similar Documents

Publication Publication Date Title
WO2018124541A1 (en) Method for manufacturing hollow-type floating ball
WO2013095046A1 (en) Bumper back beam with built-in fiber reinforced composite having hollow section, and bumper comprising same
CA1061728A (en) Container
WO2019035538A1 (en) Method for manufacturing injection blow molded product, and injection blow molded product manufactured thereby
US6681907B2 (en) Energy absorbing assembly
RU2581888C2 (en) Fuel tank with high creep resistance and method of making same
GB2249749A (en) Moulding a module cover for an air bag device which has undercut portions in mounting edge portions thereof
US20130193139A1 (en) Fuel tank of plastic and method for the production thereof
KR20070100289A (en) Method for manufacturing a plastic fuel tank with improved creep strength
DE3875965D1 (en) MULTILAYERED CONTAINER AND METHOD FOR THE PRODUCTION THEREOF.
KR880012338A (en) Manufacturing method of synthetic resin molding with reinforcement wall structure
US5193859A (en) Reinforced pipe coupling member
US4628850A (en) Marine fender
US20150360560A1 (en) Automotive fuel tank
WO2018221484A1 (en) Resin panel and manufacturing method therefor, and structure and manufacturing method therefor
RU99118764A (en) METHOD FOR PRODUCING AND USING PACKAGING VESSEL PARTS
WO2020111840A1 (en) Pressure vessel boss and pressure vessel having same
EP1547746B1 (en) Manufacturing apparatus of resin boot for constant-velocity universal joint and method of manufacturing resin boot for constant-velocity universal joint
CN207773695U (en) A kind of tank body
JP2791857B2 (en) Mold equipment for bellows production
CN109421196B (en) Method for manufacturing a protective helmet and protective helmet manufactured according to said method
KR20180130081A (en) Method of manufacturing hollow molding
JP3019448B2 (en) Hollow molded article of synthetic resin for vehicles, method of manufacturing and assembling the same
JP2732112B2 (en) Bellows and mold equipment for bellows production
KR200171879Y1 (en) A tube locking apparatus for a construction boat

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18846946

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019565145

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18846946

Country of ref document: EP

Kind code of ref document: A1