KR19990033563A - Gas Injection Mold - Google Patents
Gas Injection Mold Download PDFInfo
- Publication number
- KR19990033563A KR19990033563A KR1019970054948A KR19970054948A KR19990033563A KR 19990033563 A KR19990033563 A KR 19990033563A KR 1019970054948 A KR1019970054948 A KR 1019970054948A KR 19970054948 A KR19970054948 A KR 19970054948A KR 19990033563 A KR19990033563 A KR 19990033563A
- Authority
- KR
- South Korea
- Prior art keywords
- cavity
- injection molding
- gas injection
- mold
- gas
- Prior art date
Links
- 238000002347 injection Methods 0.000 title abstract description 39
- 239000007924 injection Substances 0.000 title abstract description 39
- 238000001746 injection moulding Methods 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 230000003028 elevating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Classifications
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- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C45/1711—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles and removing excess material from the mould cavity by the introduced fluid, e.g. to an overflow cavity
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- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
- B29C2045/0049—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity the injected material flowing against a mould cavity protruding part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
본 발명에 의한 가스 사출성형용 금형은, 가스 사출성형시 게이트를 통해 캐버티의 내부로 용융상태의 레진이 충진된 후 가스가 충진될 때 캐버티내에서 오버플로우되는 양을 수용하도록 캐버티의 일측에 보조캐버티를 구비한 가스 사출성형용 금형에 있어서, 상기 보조캐버티에는 그 보조캐버티의 사용면적을 임의로 가변하도록 조절수단이 설치된 것을 특징으로 되어 있으므로, 종래와 같이 금형을 재가공할 염려가 없을 뿐만 아니라 사출성형후 사출제품의 표면에 사출흐름자욱에 의한 외관 불량을 미연에 방지할 수 있는 것이다.The gas injection mold according to the present invention is characterized in that, when gas is filled, the molten resin is filled into the cavity through the gate at the time of gas injection molding to accommodate the amount of overflow in the cavity when the gas is filled. In the gas injection molding mold having an auxiliary cavity on one side, the auxiliary cavity is characterized in that the adjusting means is provided to arbitrarily vary the use area of the auxiliary cavity, so that the mold may be reprocessed as in the prior art. In addition, it is possible to prevent appearance defects due to injection flow on the surface of the injection molded product after injection molding.
Description
본 발명은 가스 사출성형용 금형에 관한 것으로 더욱 상세하게는 가스 사출성형시 사출금형의 캐버티(Cavity)내에서 오버플로우(Over Flow)되는 양(量)을 적절히 조절하여 금형재가공을 없앰과 동시에 사출성형후 사출제품의 표면에 생기는 사출흐름자욱에 의한 외관 불량을 미연에 방지하도록 한 가스 사출성형용금형에 관한 것이다.The present invention relates to a gas injection mold, and more particularly, to appropriately control the amount of overflow in the cavity of the injection mold during gas injection molding, thereby eliminating mold material processing. The present invention relates to a gas injection molding mold for preventing appearance defects caused by injection flow defects occurring on the surface of an injection product after injection molding.
종래에 의한 사출금형(10)은, 도 1에 도시한 바와 같이 상하 적층되게 결합되는 상원판(11) 및 하원판(12)으로 이루어져 있다.Injection mold 10 according to the prior art, as shown in Figure 1 is composed of the upper plate 11 and the lower plate 12 are coupled to be stacked up and down.
이때, 상기 상원판(11)과 하원판(12)이 서로 접촉되는 내측면 중앙에는 상하 대칭되게 캐버티(13)가 형성되어 있고, 상기 상원판(11)과 하원판(12)이 서로 접촉되는 일측단에는 가스 사출성형에 필요한 용융상태의 레진이 상기 캐버티(13)내에 흘러들어가도록 상하 대칭되게 런너(Runner; 14)가 형성되어 있으며, 상기 캐버티(13)와 런너(14)와의 사이에는 런너(14)를 통해 주입되는 용융상태의 레진이 빠른 속도로 캐버티(13)에 분사되도록 상하 대칭되게 게이트(Gate; 15)가 좁게 형성되어 있다.At this time, the cavity 13 is formed symmetrically in the center of the inner surface where the upper plate 11 and the lower plate 12 contact each other, and the upper plate 11 and the lower plate 12 contact each other. Runner 14 is vertically symmetrically formed so that the melted resin required for gas injection molding flows into the cavity 13 at one end thereof, and the cavity 13 and the runner 14 The gate 15 is narrowly formed vertically and symmetrically so that the molten resin injected through the runner 14 is injected into the cavity 13 at a high speed.
또, 상기 상원판(11)과 하원판(12)이 서로 접촉되는 내측면에 대하여 타측단에는 상기 캐버티(13)로 용융상태의 레진을 충진후 가스를 충진할 때 오버플로우되는 양을 수용하여 캐버티(13)의 표면에 생기는 사출흐름자욱의 위치를 조절하도록 상하 대칭되게 보조게이트(16)를 가진 보조캐버티(17)가 형성되어 있다.In addition, the other end of the upper plate 11 and the lower plate 12 in contact with each other at the other end is filled with the amount of overflow when filling the gas after filling the resin in the molten state with the cavity 13 The auxiliary cavity 17 having the auxiliary gate 16 is formed to be symmetrically up and down so as to control the position of the injection flow path generated on the surface of the cavity 13.
이러한, 사출금형(10)에 의해 사출성형되는 사출제품(20)은 도 2에 도시한 바와 같이 도시되지 않은 공기조화기의 토출구를 통해 실내기의 외부로 토출되는 냉기류를 상하방향으로 풍량을 조절하도록 사용되는 상하풍향 조절용 블레이드 등을 예로 들 수 있다.The injection molded product 20 injection-molded by the injection mold 10 adjusts the air volume in the vertical direction to cool air flow discharged to the outside of the indoor unit through the discharge port of the air conditioner (not shown) as shown in FIG. Examples of the up and down wind direction blade to be used may be mentioned.
즉, 상기 사출제품(20)은 상기 사출금형(10)에 의해 가스 사출성형시 상기 게이트(15)를 통해 용융상태의 레진을 캐버티(13)내에 충진시킨 다음 가스를 충진시키면 분사되는 가스압력에 의해 오버플로우되는 용융상태의 레진이 보조게이트(16)를 통해 보조캐버티(17)로 배출됨으로써 캐버티(13)내에 존재하는 용융상태의 레진에 의해 일정한 두께를 유지함과 동시에 내부에 공간이 형성되는 구조로 완성되게 된다.That is, the injection molded product 20 is injected by filling the gas into the cavity 13 after filling the resin in the molten state through the gate 15 when the gas injection molding by the injection mold 10 Molten resin overflowed by the discharged to the auxiliary cavity 17 through the auxiliary gate 16 to maintain a constant thickness by the molten resin present in the cavity 13 and at the same time there is a space inside The structure is formed.
그러나, 상기한 바와 같이 구성된 종래는, 가스 사출성형시 사출금형(10)의 일측에 형성된 게이트(15)를 통해 용융상태의 레진을 캐버티(13)내에 충진시킨 다음 가스를 충진시키면 분사되는 가스압력에 의해 오버플로우되는 용융상태의 레진이 상기 게이트(15)의 반대편에 형성된 보조게이트(16)를 통해 보조캐버티(17)로 배출됨으로써 사출성형후 사출제품(20)의 표면에 생기는 사출흐름자욱의 위치를 조정하였으나, 이러한 금형구조에서 보조캐버티(17)는 가변될 수 없는 고정 면적으로 되어 있기 때문에 사출성형후 오버플로우되는 양이 적당하지 않을 경우 여러번의 금형 재가공을 통해 그 양을 결정해야 한다는 문제점이 있었다.However, conventionally configured as described above, the gas is injected by filling the cavity 13 with the resin in the molten state through the gate 15 formed on one side of the injection mold 10 during the gas injection molding The injection flow generated on the surface of the injection-molded product 20 after injection molding by discharging molten resin overflowed by pressure through the auxiliary gate 16 formed on the opposite side of the gate 15 to the auxiliary cavity 17. Although the position of the jaws was adjusted, in this mold structure, since the auxiliary cavity 17 has a fixed area which cannot be changed, if the amount overflowed after injection molding is not appropriate, the amount is determined by reworking the mold several times. There was a problem.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 가스 사출성형시 보조캐버티에 설치된 조절수단에 의해 오버플로우되는 양을 조절하여, 금형 재가공의 염려를 없앰과 동시에 사출성형후 사출제품의 표면에 사출흐름자욱에 의한 외관 불량을 미연에 방지하도록 한 가스 사출성형용 금형을 제공하는 데 있다.Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to adjust the amount of overflow by the control means installed in the auxiliary cavity during gas injection molding, eliminating the concern of mold rework and At the same time, it is to provide a gas injection mold for preventing appearance defects caused by injection flow on the surface of an injection product after injection molding.
상기와 같은 목적을 실현하기 위하여 이루어진 본 발명에 의한 가스 사출성형용 금형은, 가스 사출성형시 게이트를 통해 캐버티의 내부로 용융상태의 레진이 충진된후 가스가 충진될 때 캐버티내에서 오버플로우되는 양을 수용하도록 캐버티의 일측에 보조캐버티를 구비한 가스 사출성형용 금형에 있어서, 상기 보조캐버티에는 그 보조캐버티의 사용면적을 임의로 가변하도록 조절수단이 설치된 것을 특징으로 한다.Gas injection molding mold according to the present invention made to achieve the above object is, when the gas is filled after the resin in the molten state is filled into the cavity through the gate during gas injection molding in the cavity In the gas injection molding mold having an auxiliary cavity on one side of the cavity to accommodate the flow amount, the auxiliary cavity is characterized in that the adjusting means is installed to arbitrarily vary the use area of the auxiliary cavity.
도 1은 종래에 의한 사출금형구조를 도시한 단면도,1 is a cross-sectional view showing a conventional injection mold structure,
도 2는 종래에 의한 사출금형에 의해 사출성형시 사출제품의 표면에 사출흐름자욱이 형성된 것을 도시한 사시도,Figure 2 is a perspective view showing that the injection flow formed on the surface of the injection molding product during injection molding by conventional injection mold,
도 3은 본 발명의 사출금형구조를 도시한 단면도,3 is a cross-sectional view showing an injection mold structure of the present invention;
도 4는 본 발명에 의한 사출금형의 하원판과 오버플로우 양을 조절하기 위한 조절수단을 도시한 사시도이다.Figure 4 is a perspective view of the lower plate of the injection mold according to the present invention and the adjusting means for adjusting the overflow amount.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
20 : 사출제품40 : 사출금형20: injection product 40: injection mold
41 : 상원판42 : 하원판41. Senate 42: House of Representatives
43 : 캐버티44 : 런너43: Cavity 44: Runner
45 : 게이트46 : 보조게이트45: gate 46: auxiliary gate
47 : 보조캐버티50 : 조절수단47: auxiliary cavity 50: control means
51 : 조절볼트51a : 머리부51: adjusting bolt 51a: head
52 : 승하강부재52: lifting member
이하, 본 발명의 일실시예에 관하여 첨부 도면을 참조하면서 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도면에서 종래의 구성과 동일한 구성에 대해서는 동일명칭 및 동일부호를 부여하고, 그에 대한 상세한 설명은 생략한다.In the drawings, the same components as those in the related art are denoted by the same names and the same reference numerals, and detailed description thereof will be omitted.
본 발명에 의한 사출금형(40)은, 도 3 및 도 4에 도시한 바와 같이 상원판(41)과 하원판(42)이 서로 접촉되는 내측면 중앙에 캐버티(43)가 형성되어 있고, 상기 상원판(41)과 하원판(42)이 서로 접촉되는 일측단에는 사출성형에 필요한 용융상태의 레진이 상기 캐버티(43)내에 흘러들어가도록 런너(44)가 형성되어 있으며, 상기 캐버티(43)와 런너(44)와의 사이에는 런너(44)를 통해 주입되는 용융상태의 레진이 빠른속도로 캐버티(43)에 분사되도록 게이트(45)가 좁게 형성되어 있다.In the injection mold 40 according to the present invention, as shown in FIGS. 3 and 4, the cavity 43 is formed at the center of the inner surface where the upper plate 41 and the lower plate 42 contact each other. At one end of the upper plate 41 and the lower plate 42 in contact with each other, a runner 44 is formed so that the molten resin required for injection molding flows into the cavity 43. The gate 45 is narrowly formed between the 43 and the runner 44 so that the molten resin injected through the runner 44 is injected into the cavity 43 at a high speed.
또, 상기 상원판(41)과 하원판(42)이 서로 접촉되는 내측면에 대하여 타측단에는 상기 캐버티(43)로 용융상태의 레진을 충진후 가스를 충진할 때 오버플로우되는 양을 수용하여 캐버티(43)의 표면에 생기는 사출흐름자욱의 위치를 조절하도록 상하 대칭되게 보조게이트(46)를 가진 보조캐버티(47)가 형성되어 있고, 상기 보조 캐버티(47)에는 보조캐버티(47)의 사용면적을 임의적으로 가변하도록 조절수단(50)이 설치되어 있다.In addition, the other end of the upper plate 41 and the lower plate 42 is in contact with each other at the other end to accommodate the amount overflowed when filling the gas after filling the resin in the molten state with the cavity 43 The auxiliary cavity 47 having the auxiliary gate 46 is formed up and down symmetrically to adjust the position of the injection flow generated on the surface of the cavity 43, the auxiliary cavity 47 is formed in the auxiliary cavity 47 The adjusting means 50 is provided so that the use area of 47 may be arbitrarily changed.
즉, 상기 조절수단(50)은 상기 보조캐버티(47)의 바닥에 형성된 나사홀(48)을 관통하도록 나사결합되는 조절볼트(51)와, 상기 보조캐버티(47)의 면적을 축소 및 확대시키도록 보조캐버티(47)의 내부에서 상기 조절볼트(51)의 끝단에 고정되는 승하강부재(52)로 이루어져 있다.That is, the adjusting means 50 is a control bolt 51 screwed to pass through the screw hole 48 formed in the bottom of the auxiliary cavity 47, and reduces the area of the auxiliary cavity 47 and It consists of a lifting member 52 which is fixed to the end of the adjusting bolt 51 in the interior of the auxiliary cavity 47 to enlarge.
이때, 상기 조절볼트(51)는 상기 하원판(42)의 하부측에서 작업자 스패너등의 공구를 이용하여 용이하게 회전 조절할 수 있도록 다각형상의 머리부(51a)가 형성되어 있다.At this time, the adjustment bolt 51 is formed on the lower side of the lower plate 42, the polygonal head 51a is formed so that it can be easily rotated using a tool such as a worker spanner.
상기 승하강부재(52)는 그 외주면이 상기 보조캐버티(47)의 내주면에 긴밀하게 밀착되어 미끄럼운동되도록 설치되어 있다.The elevating member 52 is installed so that the outer circumferential surface is in close contact with the inner circumferential surface of the auxiliary cavity 47 to slide.
다음에, 이와 같이 구성된 본 발명에 의한 작용 및 효과를 설명한다.Next, the operation and effect of the present invention configured as described above will be described.
제3에 도시한 바와 같이, 사출금형(40)의 상원판(41)과 하원판(42)을 상하 적층되게 결합시킨 상태에서 이들 일측단에 형성된 게이트(45)를 통하여 용융상태의 레진을 충진한 후 가스를 충진하면, 캐버티(43)내에 충진된 용융상태의 레진은 고속으로 분사되는 가스압력에 의해 방사상으로 확산되면서 캐버티(43)의 내벽에 골고루 퍼지게 됨으로써 사출성형후 일정한 두께를 유지함과 동시에 내부에 공간이 형성되는 사출제품(20)을 형성하게 된다.As shown in the third, in the state in which the upper plate 41 and the lower plate 42 of the injection mold 40 are stacked to be stacked up and down, the resin in the molten state is filled through the gate 45 formed at one end thereof. After filling the gas, the resin in the molten state filled in the cavity 43 is spread radially by the gas pressure sprayed at high speed and evenly spreads on the inner wall of the cavity 43 to maintain a constant thickness after injection molding. At the same time to form the injection molded product 20 is formed inside the space.
또, 가스의 분사압력에 의해 캐버티(43)내에서 오버플로우되는 용융상태의 레진은 상기 게이트(45)의 반대편에 형성된 보조게이트(46)를 통해 별도로 마련된 보조캐버티(47)로 배출됨으로써 사출성형후 사출제품(20)의 표면에 생기는 사출흐름자욱에 의한 외관 불량을 미연에 방지하여 준다.In addition, the resin in the molten state overflowed in the cavity 43 by the gas injection pressure is discharged to the auxiliary cavity 47 provided separately through the auxiliary gate 46 formed on the opposite side of the gate 45. After injection molding, it prevents appearance defects due to injection flow generated on the surface of the injection molded product 20 in advance.
그러나, 사출성형후 사출제품(20)의 표면에 사출흐름자욱에 의한 불량이 발생될 경우에는 오버플로우되는 양을 조절하여야 하는데, 이때 작업자는 조절수단(50)의 조절볼트(51)를 좌우방향으로 회전시켜 보조캐버티(47)내에 수용된 승하강부재(52)를 상승 또는 하강시킨다.However, in the event of a defect caused by injection flow defects on the surface of the injection molded product 20 after injection molding, the amount of overflow should be adjusted, in which case the operator moves the adjustment bolt 51 of the adjustment means 50 to the left and right directions. It rotates to raise or lower the lifting member 52 accommodated in the auxiliary cavity 47.
이때, 승하강부재(52)는 도 3에 도시한 바와 같이 보조캐버티(47)내에서 수직으로 승하강되면서 보조캐버티(47)의 사용면적을 축소 또는 확대시켜 오버플로우되는 양을 조절하게 됨으로, 사출성형후 사출제품(20)의 표면에 생기는 사출흐름자욱에 의한 외관 불량을 방지할 수 있고, 이로 인하여 종래와 같이 금형 재가공에 따른 염려를 없앨 수 있는 것이다.At this time, the elevating member 52 is lowered vertically in the auxiliary cavity 47 as shown in Figure 3 to reduce or enlarge the use area of the auxiliary cavity 47 to adjust the amount of overflow By doing so, it is possible to prevent the appearance defects due to the injection flow occurs on the surface of the injection molded product 20 after injection molding, thereby eliminating the worry of reworking the mold as in the prior art.
앞에서 설명한 바와 같이, 본 발명에 의한 가스 사출성형용 금형에 의하면, 가스 사출성형시 보조캐버티로 오버플로우되는 용융상태의 레진의 양을 임의로 조절할 수 있도록 보조캐버티의 사용면적을 가변시키는 조절수단이 설치된 구조로 되어 있기 때문에 종래와 같이 금형을 재가공할 염려가 없을 뿐만 아니라 사출성형후 사출제품의 표면에 사출흐름자욱에 의한 외관 불량을 미연에 방지할 수 있는 효과가 있다.As described above, according to the gas injection molding mold according to the present invention, the control means for varying the use area of the auxiliary cavity to arbitrarily control the amount of resin in the molten state overflowed to the auxiliary cavity during gas injection molding Since the structure is installed, there is no fear of reprocessing the mold as in the prior art, and there is an effect of preventing appearance defects due to injection flow on the surface of the injection molded product after injection molding.
Claims (4)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970054948A KR100248773B1 (en) | 1997-10-24 | 1997-10-24 | A molder of gas injection molding |
| JP10298873A JPH11192645A (en) | 1997-10-24 | 1998-10-20 | Gas injection mold |
| CN98123417A CN1217250A (en) | 1997-10-24 | 1998-10-21 | Gas-jetting moulding machine |
| ES009802196A ES2149112B1 (en) | 1997-10-24 | 1998-10-21 | MOLDING MACHINE WITH GAS INJECTION. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970054948A KR100248773B1 (en) | 1997-10-24 | 1997-10-24 | A molder of gas injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990033563A true KR19990033563A (en) | 1999-05-15 |
| KR100248773B1 KR100248773B1 (en) | 2000-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019970054948A KR100248773B1 (en) | 1997-10-24 | 1997-10-24 | A molder of gas injection molding |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH11192645A (en) |
| KR (1) | KR100248773B1 (en) |
| CN (1) | CN1217250A (en) |
| ES (1) | ES2149112B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010113253A (en) * | 2000-06-17 | 2001-12-28 | 김성동 | Forming mold construction |
| TW548173B (en) * | 2001-07-10 | 2003-08-21 | Cinpres Gas Injection Ltd | Process and apparatus for injection moulding a hollow plastics article |
| CN108381803B (en) * | 2018-03-21 | 2023-12-15 | 江西海源复合材料科技股份有限公司 | Resin and cut-off glass fiber mixing equipment |
| KR102257217B1 (en) * | 2019-06-18 | 2021-05-28 | 한국생산기술연구원 | Apparatus for preventing air trap on the bullet-shaped injection products |
| CN113145716B (en) * | 2021-03-25 | 2022-10-25 | 哈尔滨工业大学 | Two-piece one-die forming method for mutually symmetrical characteristic parts |
| CN113799334A (en) * | 2021-10-20 | 2021-12-17 | 宁波方正汽车模具股份有限公司 | Gas-assisted forming mechanism of automobile door plate handrail |
| CN113927835B (en) * | 2021-10-22 | 2023-06-30 | 江苏汇鼎光学眼镜有限公司 | Resin filling auxiliary device in production process of resin spectacle lenses |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4102319C2 (en) * | 1990-01-30 | 1994-12-01 | Toyoda Gosei Kk | Method and device for molding hollow bodies |
| JP3827333B2 (en) * | 1993-04-14 | 2006-09-27 | 株式会社プライムポリマー | Gas injection molding method and its mold |
| JPH07148798A (en) * | 1993-11-29 | 1995-06-13 | Asahi Chem Ind Co Ltd | Injection molded product, injection molding method and mold apparatus used therein |
| JP3402404B2 (en) * | 1994-08-12 | 2003-05-06 | 三菱エンジニアリングプラスチックス株式会社 | Injection molding method and injection mold for molded article having hollow structure |
| JPH08118429A (en) * | 1994-10-26 | 1996-05-14 | Sekisui Chem Co Ltd | Injection mold and injection-molded article |
-
1997
- 1997-10-24 KR KR1019970054948A patent/KR100248773B1/en not_active IP Right Cessation
-
1998
- 1998-10-20 JP JP10298873A patent/JPH11192645A/en active Pending
- 1998-10-21 ES ES009802196A patent/ES2149112B1/en not_active Expired - Lifetime
- 1998-10-21 CN CN98123417A patent/CN1217250A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES2149112A1 (en) | 2000-10-16 |
| ES2149112B1 (en) | 2001-05-01 |
| CN1217250A (en) | 1999-05-26 |
| JPH11192645A (en) | 1999-07-21 |
| KR100248773B1 (en) | 2000-03-15 |
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