KR100319586B1 - Extruding Machine - Google Patents
Extruding Machine Download PDFInfo
- Publication number
- KR100319586B1 KR100319586B1 KR1019990019894A KR19990019894A KR100319586B1 KR 100319586 B1 KR100319586 B1 KR 100319586B1 KR 1019990019894 A KR1019990019894 A KR 1019990019894A KR 19990019894 A KR19990019894 A KR 19990019894A KR 100319586 B1 KR100319586 B1 KR 100319586B1
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- KR
- South Korea
- Prior art keywords
- molding
- extrusion
- die
- screw
- heating cylinder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 210000003101 oviduct Anatomy 0.000 claims description 3
- 239000012778 molding material Substances 0.000 abstract description 25
- 238000000465 moulding Methods 0.000 abstract description 20
- 235000012438 extruded product Nutrition 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002023 wood Substances 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0027—Cutting off
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
- B29K2995/0021—Multi-coloured
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
본 발명은 압출성형에 의하여 제조되는 압출품의 표면에 자연의 나이테 모양을 부가하여 성형 할 수 있는 나이테모양의 무늬를 가진 압출성형장치에 관한 것이다.The present invention relates to an extrusion molding apparatus having a ring-shaped pattern that can be molded by adding a natural ring shape to the surface of the extruded product produced by extrusion molding.
성형물의 표면에 자연의 나이테 모양의 무늬를 부가하여 성형함으로써 소비자의 욕구를 충족시키고, 주위의 환경과 조화될 수 있는 성형물을 성형하고자 하는 것으로써, 가열실린더(1)에 성형재료(L)를 투입하고, 압출다이스(4)의 일측에서 무늬성형용 성형재료를 투입하며, 상기 가열실린더(1)의 내측에 장착된 스크류(2)의 말단부에 교반익(10)을 장착하여, 상기 압출다이(4)의 내측에서 성형재료(L)를 일정한 방향으로 회전교반시켜 줌으로써 압출다이(4)를 통과한 성형물(P)의 표면에 나이테 모양의 무늬를 성형하도록 하는 것이다.The molding material (L) is applied to the heating cylinder (1) by adding a natural ring-shaped pattern to the surface of the molding to form a molding that satisfies the needs of consumers and can be harmonized with the surrounding environment. The injection molding material is introduced from one side of the extrusion die 4, and the stirring blade 10 is attached to the distal end of the screw 2 mounted inside the heating cylinder 1, and the extrusion die By rotating and stirring the molding material L in a predetermined direction in the inside of (4), the ring-shaped pattern is molded on the surface of the molding P passing through the extrusion die 4.
Description
본 발명은 압출성형에 의하여 제조되는 압출품의 표면에 자연의 나이테 모양을 부가하여 성형 할 수 있는 나이테모양의 무늬를 가진 압출성형장치에 관한 것이다.The present invention relates to an extrusion molding apparatus having a ring-shaped pattern that can be molded by adding a natural ring shape to the surface of the extruded product produced by extrusion molding.
일반적으로 종래에 사용되고 있는 압출성형기는 도8 및 도9에 도시된 바와같이,Extruders generally used in the prior art, as shown in Figure 8 and 9,
가열실린더(1)의 내부에는 스크류(2)가 내장되고, 일측에는 구동모우터(M)와 홉퍼(3)가 장착되며, 타측단에는 보조홉퍼(7)를 장착하며, 말단부에는 내주면이 나팔관의 공간부(4d)가 형성된 앞다이(4a)와, 내측에 일자형 통로(4e)가 형성된 중간다이(4d) 및 압출통로(4f)가 형성된 압출금형(4c)을 조합하여서 된 압출다이(4)를 장착하여서 된 것을 사용하고 있었다.Inside the heating cylinder (1) is a screw (2) is built, one side is equipped with a drive motor (M) and the hopper (3), the other end is equipped with an auxiliary hopper (7), the inner end is a fallopian tube The extrusion die 4 which combines the front die 4a in which the space part 4d of this invention was formed, the intermediate die 4d in which the linear channel | path 4e was formed inside, and the extrusion die 4c in which the extrusion path 4f was formed. ) Was used to attach.
상기 스크류(2)는 가열실린더(1)의 말단부까지 연장되어 있으며, 이 스크류(2)의 말단부는 앞다이(4a)에 형성된 나팔관형의 입구까지만 연장되어 있는 것이다.The screw 2 extends to the distal end of the heating cylinder 1, and the distal end of the screw 2 extends only to the fallopian opening of the front die 4a.
이러한 종래의 압출기는 가열실린더(1)의 말단부에 장착된 압출금형(4c)의 모양에 따라 원하는 형태의 성형품을 얻을 수 있도록 된 것이다.Such a conventional extruder is to obtain a molded article of the desired shape according to the shape of the extrusion mold (4c) mounted on the distal end of the heating cylinder (1).
즉, 홉퍼(3)에 성형재료(L)를 투입하고 구동모우터(M)를 가동시키면, 이 구동모우터(M)의 구동에 의하여 가열실린더(1)내부에 장착된 스크류(2)가 회전하면서 상기 성형재료(L)가 홉퍼(3) 직하방으로 투입된다.That is, when the molding material L is put into the hopper 3 and the driving motor M is operated, the screw 2 mounted inside the heating cylinder 1 is driven by the driving motor M. While rotating, the molding material L is injected directly below the hopper 3.
이때, 가열실린더(1)에는 열선이 내장되어 있는 것이므로 성형재료(L)가 서서히 녹으면서 반액체상의 점액질로 변하는 상태로서 이송되게 된다.At this time, the heating cylinder (1) has a built-in heating wire, so that the molding material (L) is gradually melted and transferred to a semi-liquid slime state.
가열실린더(1)의 가열작용에 의하여 점액질의 반액체상태로 변환된 성형재료(L)는 스크류(2)에 의하여 전방측방향으로 이송되게 되는 바, 가열실린더(1)의 말단부에 장착된 앞다이(4a)의 공간부(4d)로 이동되고, 이후, 서서히 좁아지는 공간부(4d)를 통과하면서 압축되고, 중간다이(4d)를 통과하면서 압축되고, 중간다이(4d)의 통로(4e)를 통과하면서 완전히 압축되어 압출금형(4c)을 통과하면서 막대형태 등의 설정형태로 성형되어 배출되는 것이다.The molding material L, which is converted into a semi-liquid state of mucus by the heating action of the heating cylinder 1, is transferred to the front side direction by the screw 2, and is mounted on the distal end of the heating cylinder 1. It is moved to the space portion 4d of the die 4a, and then compressed while passing through the space portion 4d, which is gradually narrowed, compressed while passing through the intermediate die 4d, and the passage 4e of the intermediate die 4d. It is completely compressed while passing through), and is molded and discharged into a set form such as a rod while passing through the extrusion mold 4c.
이때, 압출다이(4)를 통과한 성형물(P')은 냉각기(5)를 통과하면서 냉각되고, 완전히 냉각된 성형물(P)은 냉각기(5)의 말단부에 장착된 절단기(6)에 의하여 원하는 길이로 자동 절단되는 것이다.At this time, the molding P 'having passed through the extrusion die 4 is cooled while passing through the cooler 5, and the completely cooled molding P is desired by the cutter 6 mounted at the distal end of the cooler 5. It is automatically cut to length.
상기한 과정을 통해 성형되는 성형물(P)의 표면에 무늬를 성형하기 위하여는 가열실린더(1)의 일정위치에 보조홉퍼(7)를 장착하고, 이 보조홉퍼(7)에 성형재료(L)와는 다른 색상을 가진 무늬성형용재료(L1)를 투입하도록 된 것이 사용되고 있다.In order to mold the pattern on the surface of the molded product P formed through the above-described process, the auxiliary hopper 7 is mounted at a predetermined position of the heating cylinder 1, and the molding material L is attached to the auxiliary hopper 7. It is used to put the pattern forming material (L1) having a different color from.
즉, 보조홉퍼(7)에 투입된 다른 색상의 무늬성형재로(L1)는 일정한 방향으로 투입되는 것이고, 압출다이(4)를 통과할 때에도 일정한 방향으로 무늬가 형성되는 것이었다.That is, the pattern forming material (L1) of the other color put into the auxiliary hopper (7) is put in a certain direction, even when passing through the extrusion die 4, the pattern was formed in a certain direction.
즉, 도 7에 도시된 바와같이 성형물(P)의 표면과 내면에 길이방향으로 줄무늬가 형성되는 것이다.That is, as illustrated in FIG. 7, streaks are formed in the longitudinal direction on the surface and the inner surface of the molding P.
따라서, 상기한 수단으로 성형되는 성형물(P)은 표면에 길이방향으로 거의 동일한 형태를 갖는 줄무늬만이 연출되는 단조로움을 탈피할 수 없었다.Therefore, the molded article P formed by the above-described means could not escape the monotony of which only stripes having substantially the same shape in the longitudinal direction were produced on the surface.
본 발명은 상기한 종래의 압출성형기에 의하여 성형되는 성형물의 표면에 좀 더 다양한 형태의 무늬를 성형할 수 있도록 하는데 그 목적이 있는 것이다.It is an object of the present invention to be able to mold a variety of patterns on the surface of the molding formed by the conventional extrusion molding machine described above.
즉, 성형물의 표면에 자연의 나이테 모양의 무늬가 표출되도록 성형함으로써 소비자의 욕구를 충족시키고, 주위의 환경과 조화될 수 있는 성형물을 성형하고자 하는 것이다.That is, by molding so that the natural ring-shaped pattern on the surface of the molding to meet the needs of consumers, it is intended to mold the molding that can be harmonized with the surrounding environment.
상기한 목적은, 보조홉퍼를 통하여 투입되는 다른색상의 무늬성형재료(L1)를 가열실린더에 투입한 후, 스크류를 통과한 성형재료(L)와 일정한 방향으로 회전시켜주면서 믹서시켜줌으로써 압출다이를 통과한 성형물의 표면에 나이테모양의 무늬를 부가할 수 있는 것이다.The above object is to insert the different color pattern forming material (L1) introduced through the auxiliary hopper into the heating cylinder, and then the extrusion die by mixing while rotating in a predetermined direction with the molding material (L) passed through the screw. A ring-shaped pattern can be added to the surface of the molded object which passed.
도 1은 본 발명의 압출장치를 나타낸 측면도1 is a side view showing an extrusion apparatus of the present invention
도 2는 본 발명의 요부를 나타낸 확대단면도2 is an enlarged cross-sectional view showing the main part of the present invention.
도 3은 본 발명의 요부를 나타낸 확대사시도Figure 3 is an enlarged perspective view showing the main part of the present invention
도 4는 본 발명에 의한 성형물이 성형되는 상태를 나타낸 사시도Figure 4 is a perspective view showing a state in which the molding according to the present invention is molded
도 5는 본 발명의 다른 실시예를 나타낸 일부확대단면도Figure 5 is a partially enlarged cross-sectional view showing another embodiment of the present invention
도 6은 본 발명에 의하여 성형되는 성형물의 정면도Figure 6 is a front view of the molding molded by the present invention
도 7은 종래 성형기에 의하여 성형되는 성형물의 정면도7 is a front view of a molding molded by a conventional molding machine
도 8은 종래의 압출성형기를 나타낸 정면도8 is a front view showing a conventional extrusion molding machine
도 9는 종래의 압출성형기의 요부를 나타낸 일부확대 단면도9 is a partially enlarged cross-sectional view showing the main portion of a conventional extrusion machine.
※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※
1 : 가열실린더 2 : 스크류1: heating cylinder 2: screw
3 : 홉퍼 4 : 압출다이3: Hopper 4: Extrusion Die
4a: 앞다이 4b: 중간다이4a: front die 4b: middle die
4c: 압출금형 4d: 공간부4c: extrusion mold 4d: space part
4e: 통로 4f: 압출통로4e: passage 4f: extrusion passage
5 : 냉각기 6 : 절단기5: cooler 6: cutting machine
7 : 보조홉퍼 8 : 주입통로7: auxiliary hopper 8: injection passage
9,9':주입구 10: 교반익9,9 ': inlet 10: stirring blade
상기한 목적을 달성하기 위한 본 발명의 압출기를 첨부도면에 의하여 상세히 설명한다.Extruder of the present invention for achieving the above object will be described in detail by the accompanying drawings.
본 발명은, 가열실린더(1)에 성형재료(L)를 투입하고, 압출다이스(4)의 일측에서 무늬성형용 성형재료를 투입하며, 상기 가열실리더(1)의 내측에 장착된 스크류(2)의 말단부에 교반익(10)을 장착하여, 상기 압출다이(4)의 내측으로부터 이송되는 성형재료(L)가 일정한 방향으로 회전교반되는 상태로서 이송되도록함으로써 압출다이(4)를 통과한 성형물(P)의 표면에 나이테 모양의 무늬가 표출되도록 구성한 것이다.According to the present invention, a molding material (L) is introduced into the heating cylinder (1), a patterning molding material is introduced from one side of the extrusion die (4), and a screw (inside the heating cylinder 1) is mounted ( The stirring blade 10 is attached to the distal end of 2) so that the molding material L conveyed from the inside of the extrusion die 4 is conveyed in a state in which it is rotated and stirred in a predetermined direction to pass through the extrusion die 4. The ring-shaped pattern is expressed on the surface of the molding (P).
상기한 방법을 충족하기 위한 본 발명의 구성을 설명한다.The configuration of the present invention for satisfying the above method will be described.
가열실린더(1)의 내부에는 스크류(2)가 내장되고, 일측에는 구동모우터(M)와 호퍼(3)가 장착되며, 타측단에는 보조홉퍼(7)를 장착하며, 말단부에는 내주면에 나팔관형상의 공간부(4d)가 형성된 앞다이(4a)와, 내측에 일자형 통로(4e)가 형성된 중간다이(4d)및 압출통로(4f)가 마련된 압출금형(4c)을 조합하여서 된 압출다이(4)를 장착하여서 된 통상의 압출기에 있어서,Inside the heating cylinder (1) is a screw (2) is built, one side is equipped with a drive motor (M) and the hopper (3), the other end is equipped with an auxiliary hopper (7), the end is a fallopian tube on the inner peripheral surface An extrusion die formed by combining a front die 4a having a shaped space portion 4d, an intermediate die 4d having a straight passage 4e formed therein, and an extrusion die 4c provided with an extrusion passage 4f. In the ordinary extruder equipped with 4),
상기 앞다이(4a)의 외주연부 일측에 주입통로(8)를 형성하고 , 이 주입통로(8)과 연결된 주입구(9,9')를 상하동일지점에 형성하며,The injection passage 8 is formed at one side of the outer circumferential edge of the front die 4a, and the injection holes 9 and 9 'connected to the injection passage 8 are formed at the same vertical position.
상기 앞다이(4a)의 내측 입구까지 연장된 스크류(2)의 말단부에 판상의 사다리꼴형 교반익(10)을 부착하되, 이 교반익(10)의 길이는 앞다이(4a)의 공간부(4d) 말단에 이르는 길이로 형성하여, 스크류(2)의 회전과 동시에 회전작용하도록 구성하여서 된 것이다.A plate-shaped trapezoidal stirring blade 10 is attached to the distal end of the screw 2 extending to the inner inlet of the front die 4a, and the length of the stirring blade 10 is the space portion of the front die 4a. 4d) is formed to a length reaching the end, and configured to rotate simultaneously with the rotation of the screw (2).
이와같이 구성된 본 발명은 도 2에 도시된 바와같이,The present invention configured as described above is shown in FIG.
홉퍼(3)에 투입된 성형재료(L)는 가열실린더(1)의 내부에 장착된 스크류(2)에 의하여 압출다이(4)로 이송된다.The molding material L injected into the hopper 3 is transferred to the extrusion die 4 by a screw 2 mounted inside the heating cylinder 1.
상기 압출다이(4)를 구성하는 앞다이(4a)까지 성형재료(L)도달된 성형재료(L)는 점차로 협소해지는 공간부(4d)를 통과하면서 압축되는 상태로 이송되며, 이때 앞다이(4a)의 일측에 상하대칭형으로 관통형성된 주입구(9,9')를 통하여 보조홉퍼(7)에 주입된 무늬형성재료(L1)가 상기 앞다이(4a)의 공간부(4d)로 투입된다.The molding material L, which has reached the molding material L up to the front die 4a constituting the extrusion die 4, is transported in a compressed state while passing through the space portion 4d, which is gradually narrowed. The pattern forming material L1 injected into the auxiliary hopper 7 is introduced into the space portion 4d of the front die 4a through the injection holes 9 and 9 'formed in a vertically symmetrical manner on one side of 4a.
이때, 스크류(2)의 말단부에 부착된 교반익(10)에 의하여 성형재료(L)가 회전하게 되는 바, 회전하는 상태로 이송되는 성형재료(L)의 외측 상하부 일정위치에 설정되는 각각의 주입구(9,9')를 통해 투입되는 무늬성형재료(L1)는 도4에 도시된 바와같이 상기 성형재료(L)의 외주면을 휘감는 형태로 교반이송되게 된다.At this time, the molding material (L) is rotated by the stirring blade (10) attached to the distal end of the screw (2), each of which is set at a predetermined position on the outer upper and lower parts of the molding material (L) conveyed in a rotating state As shown in FIG. 4, the pattern forming material L1 introduced through the injection holes 9 and 9 ′ is agitated and transported in a form in which the outer peripheral surface of the molding material L is wound.
이와같이 무늬성형재료(L1)가 성형재료(L) 외주면부위를 나선상으로 휘감는 상태로서 회전 이송되는 상태는, 예컨데 봉상의 성형물 외주면부위에 2줄나선이 형성되는 상태와 거의 동일하게 이루어지는 것으로도 볼 수 있다.이와같이 성형재료(L)의 외주면을 무늬성형재료(L1)가 나선형으로 휘감는 상태로 교반이송되는 성형물은 계속되는 스크류(2)의 이송압력에 의하여 중간다이(4d)의 배출통로(4e)를 통과하여 압출금형(4c)를 통하여 배출된다.In this way, the state in which the pattern forming material L1 is rotated and conveyed as the state in which the outer peripheral surface portion of the molding material is wound in a spiral shape is, for example, almost identical to the state in which two lines are formed on the outer peripheral surface portion of the rod-shaped molding. As such, the molded article which is agitated and transported while the outer peripheral surface of the molding material L is spirally wound around the molding material L has a discharge passage 4e of the intermediate die 4d by the subsequent feeding pressure of the screw 2. It passes through and is discharged | emitted through the extrusion mold 4c.
이때 출구가 협소해진 압출다이(4c)를 통하여 배출되는 순간 스크류(2)에 의한 압출압력이 해제되면서 약간 확장되는 형태로 배출되는 것이다At this time, the outlet pressure is discharged through the extrusion die 4c which is narrowed and is discharged in the form of being expanded slightly while the extrusion pressure by the screw 2 is released.
상기 압출금형(4c)의 협소한 통로를 통과하면서 성형재료(L)의 외주면에 권취된 무늬성형재료(L1)는 길게 늘어지면서 도6에 도시된 바와같은 나이테의 형태를 이루게 되는 것이다.The pattern forming material L1 wound on the outer circumferential surface of the molding material L while passing through the narrow passage of the extrusion mold 4c is elongated to form a ring as shown in FIG. 6.
이러한 나이테 형태의 무늬는 설정되는 스크류(2)의 회전속도 및 교반익(10)의 회전속도에 의하여 그 간격이 조절되는 것으로서, 스크류(2)의 회전속도를 빠르게 조절하면, 배출되는 성형물(P)의 배출속도가 빨라지게 되어 각 나이테무늬간의 간격이 길게 형성되고, 스크류(2)의 회전속도를 느리게 조절하면 배출되는 성형물(P)의 표면에 형성되는 나이테 모양의 무늬는 무늬모양의 폭이 크고, 각 나이테 사이의 간격이 짧게 형성되는 것이다.Such a ring-shaped pattern is that the interval is adjusted by the rotational speed of the screw (2) is set and the rotational speed of the stirring blade 10, when the rotational speed of the screw (2) is adjusted quickly, discharged molding (P Discharge speed of) increases, so that the interval between each ring pattern is formed long, and when the rotation speed of the screw (2) is adjusted slowly, the ring-shaped pattern formed on the surface of the discharged molding (P) has a pattern-shaped width. Larger, shorter spacing between each ring.
본 발명에 있어서, 앞다이(4a)에 부착되는 보조홉퍼(7)는 가열실린더(1)의 측에 적당한 간격을 유지한 상태로 배치하여도 동일한 작용효과를 얻을 수 있는 것이다.(도5 참조)In the present invention, the auxiliary hopper 7 attached to the front die 4a can obtain the same effect even if the auxiliary hopper 7 is placed in a state in which the proper distance is maintained on the side of the heating cylinder 1 (see Fig. 5). )
즉, 스크류(2)의 말단부에 근접하게 설치된 보조홉퍼(7)와 주입통로(8) 및 이 주입통로(8)와 연결된 주입구(9,9')에서 무늬성형재료(L1)가 투입되면, 성형재료(L)의 외주면 상하측 2곳에 일자형태를 이루면서 앞다이(4a)까지 이동되고, 이후 스크류(2)의 말단부에 장착된 교반익(10)에 의하여 성형재료(L)와 무늬성형재료(L1)가 동시에 회전하면서 압축되고, 압축금형(4c)을 통하여 배출되는 것이다.That is, when the pattern forming material L1 is introduced from the auxiliary hopper 7 and the injection passage 8 and the injection holes 9 and 9 'connected to the injection passage 8, which are installed close to the distal end of the screw 2, The forming material L and the pattern forming material are moved to the front die 4a while forming a straight shape at two upper and lower outer circumferential surfaces of the molding material L, and then by the stirring blade 10 mounted at the distal end of the screw 2. L1 is compressed while rotating at the same time, and is discharged through the compression mold 4c.
이러한 과정을 통해 배출되는 성형물(P)의 표면에도 나이테형의 무늬가 형성된다.The ring-shaped pattern is also formed on the surface of the molded product (P) discharged through this process.
이상에서 설명한 바와같이, 본 발명의 압출성형기는 내부에 설치된 스크류(2)의 말단부에 고정된 교반익(10)에 의하여 성형재료(L)가 회전하면서 부가적으로 투입되는 무늬성형재료(L1)가 상기 성형재료(L)의 외주면을 나선형형태로 휘감는 상태로서 이동되고, 이후 압출금형(4c)을 통과하면서 나선형 무늬성형재료(L1)가 길게 늘어지면서 나이테형상의 무늬를 이루게 되는 것이다.As described above, the extrusion molding machine of the present invention is additionally added while the molding material L is rotated by the stirring blade 10 fixed to the distal end of the screw 2 installed therein (L1) Is moved as a state in which the outer circumferential surface of the molding material (L) is wound in a spiral form, and then passes through the extrusion mold (4c) while the spiral pattern forming material (L1) is elongated to form a ring-shaped pattern.
이와같이 성형물(P)의 표면에 나이테형의 무늬를 성형함으로써 합성수지로 성형되는 성형물에 목재와 동일한 느낌을 주게 되는 것이다.In this way, by forming a ring-shaped pattern on the surface of the molding (P) is to give the molding molded with synthetic resin the same feeling as wood.
따라서, 기존의 압출성형장치에서 이룰 수 없었던 나이테무늬를 성형함으로써 더 다양하고, 자연과 친밀감있는 제품을 성형할 수 있는 탁월한 효과가 있는 것이다.Therefore, by forming a ring pattern that could not be achieved in the conventional extrusion molding apparatus has an excellent effect of forming a more diverse, natural and intimate product.
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