JPS6337913A - Injection molder - Google Patents
Injection molderInfo
- Publication number
- JPS6337913A JPS6337913A JP18107086A JP18107086A JPS6337913A JP S6337913 A JPS6337913 A JP S6337913A JP 18107086 A JP18107086 A JP 18107086A JP 18107086 A JP18107086 A JP 18107086A JP S6337913 A JPS6337913 A JP S6337913A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- cylinder
- heating cylinder
- heat
- heating resistor
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 9
- 239000007924 injection Substances 0.000 title claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims description 7
- 229910001337 iron nitride Inorganic materials 0.000 claims description 7
- 239000011347 resin Substances 0.000 abstract description 9
- 229920005989 resin Polymers 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、特殊な形状の加熱シリンダを有する射出成
形機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to an injection molding machine having a specially shaped heating cylinder.
従来射出成形機の加熱シリンダは、射出時の高圧に対す
る強度上の理由から加熱シリンダ全体の肉厚を厚くして
いた。Conventionally, the heating cylinder of an injection molding machine has been made thick as a whole in order to provide strength against high pressure during injection.
しかし加熱シリンダの圧力の加わる部分は先端部のみで
あり、その他の加熱シリンダの部分は熱的特性を考える
と薄肉であることが望しく、従来のシリンダではこのよ
うな熱的設計がなされていないために加熱シリンダ内部
での発熱を精度良く短時間に補償することが困難であっ
た。However, the pressure applied part of the heating cylinder is only at the tip, and other parts of the heating cylinder should preferably be thin in terms of thermal characteristics, and conventional cylinders do not have such a thermal design. Therefore, it has been difficult to accurately compensate for the heat generated inside the heating cylinder in a short period of time.
この発明は前述した事情に鑑み創案されたもので、その
目的は加熱シリンダ内部での発熱を精度良く短時間で制
御することのできる射出成形機を提供することにある。This invention was devised in view of the above-mentioned circumstances, and its purpose is to provide an injection molding machine that can accurately control heat generation inside a heating cylinder in a short time.
この発明によれば加熱シリンダの内面を窒化鉄材で補強
すると共に、該加熱シリンダの内壁面近傍に抵抗体発熱
体を設け、その射出側先端部において補強用構造体で補
強して金型側支持台へ取付は支持したことを特徴とする
ものである。According to this invention, the inner surface of the heating cylinder is reinforced with an iron nitride material, and a resistor heating element is provided near the inner wall surface of the heating cylinder, and its injection side tip is reinforced with a reinforcing structure to support the mold side. The feature is that the mounting on the stand is supported.
そして射出時に最大圧力が加わる先端部を補強すると共
に、内面を窒化鉄材で補強することで耐圧性を補償する
。The tip, where the maximum pressure is applied during injection, is reinforced, and the inner surface is reinforced with iron nitride to ensure pressure resistance.
また薄肉にして抵抗発熱体を設けたことによって、樹脂
内部に発生した摩擦熱が過剰の場合は薄いシリンダ層を
通して放熱できるから、逆に不足している場合は発熱体
から補えば良いことから温度制御を精度よく短時間で行
えるようにしたものである。In addition, by making the wall thinner and installing a resistance heating element, if the frictional heat generated inside the resin is excessive, it can be dissipated through the thin cylinder layer, and conversely, if it is insufficient, it can be supplemented from the heating element, which increases the temperature. This allows for accurate control in a short time.
以下この発明の射出成形機を図示する実施例によって説
明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The injection molding machine of the present invention will be described below with reference to illustrative embodiments.
加熱シリンダ１は、内面が窒化鉄材２で補強・されてい
ると共に、内壁面近傍に抵抗発熱体３が設けられて薄肉
に形成されており、射出側先端部において補強用構造体
４で補強して金型５側の支持台６へ取付は支持されてな
っている。（第１図参照）なおここで符号７は射出用ス
クリュー、８は樹脂供給用ホッパである。The heating cylinder 1 has an inner surface reinforced and reinforced with an iron nitride material 2, a resistance heating element 3 provided near the inner wall surface, and a thin wall, and a reinforcing structure 4 reinforced at the tip on the injection side. It is mounted and supported on a support stand 6 on the side of the mold 5. (See FIG. 1) Here, reference numeral 7 is an injection screw, and 8 is a resin supply hopper.
加熱シリンダ１は、直接発熱体３を設置できるようにセ
ラミック等の電気的絶縁材で製作されている。そして内
面に内方へ開口しており、抵抗発熱体３が設置される溝
９が複数形成されていると共に、この溝９を塞ぐように
内面窒化鉄材２が設けられている。The heating cylinder 1 is made of an electrically insulating material such as ceramic so that the heating element 3 can be directly installed. A plurality of grooves 9 are formed on the inner surface and open inward, and in which the resistance heating elements 3 are installed, and an inner surface iron nitride material 2 is provided so as to close the grooves 9.
なお窒化された鉄の筒を挿入することにより、従来通シ
なめらかな可塑化ができるようになっている。By inserting a nitrided iron tube, smooth plasticization is now possible.
また加熱シリンダ１の先端部は、射出時に高圧が加わる
ので、第３図に示す補強用構造体４を金型支持台６に取
付けておき、その中に薄肉の加熱シリンダ１を第１図で
示したように挿入されてなっている。Also, since high pressure is applied to the tip of the heating cylinder 1 during injection, the reinforcing structure 4 shown in FIG. It is inserted as shown.
このような構成からなる加熱シリンダｌであれば、加熱
シリンダ１の発熱体３に供給する電力を制御することに
よってシリンダ内部の樹脂の可塑化プロセスを制御する
時は、樹脂内部に発生した摩擦熱が過剰の場合は薄いシ
リンダ層を通して放熱し、逆に不足している場合は発熱
体から補うことができる。If the heating cylinder 1 has such a configuration, when the plasticization process of the resin inside the cylinder is controlled by controlling the electric power supplied to the heating element 3 of the heating cylinder 1, the frictional heat generated inside the resin can be controlled. If there is an excess, the heat is radiated through the thin cylinder layer, and conversely, if it is insufficient, it can be compensated for by the heating element.
そしてこれらの温度制御補償は、従来の厚肉シリンダに
比べ熱的おくれが少ないため、精度良く短時間で行える
。These temperature control compensations can be performed accurately and in a short time because there is less thermal lag than in conventional thick-walled cylinders.
なお補強用構造体４が取付けられている部分は肉厚が厚
いが、非干渉制御方式を採用することで精度の高い温度
制御を実現することができる。Although the portion where the reinforcing structure 4 is attached is thick, highly accurate temperature control can be achieved by adopting a non-interference control method.
この発明の射出成形機によれば加熱シリンダを薄肉く形
成し、内壁面近傍に抵抗発熱体を設けたことにより、発
熱体による加熱と、薄肉シリンダからの放熱を短時間で
行える。According to the injection molding machine of the present invention, by forming the heating cylinder with a thin wall and providing a resistance heating element near the inner wall surface, heating by the heating element and heat radiation from the thin cylinder can be performed in a short time.
そのため樹脂の温度制御補償を、従来の厚肉シリンダに
比べ熱的おくれが少ないため、精度よく短時間で行える
。Therefore, temperature control compensation for the resin can be performed accurately and in a short time because there is less thermal lag compared to conventional thick-walled cylinders.
また樹脂が流れる内面に窒化鉄材を設けたことＫより、
従来通りなめらかな可塑化が行える。In addition, by providing iron nitride material on the inner surface through which the resin flows,
Smooth plasticization can be performed as before.
さらに加熱シリンダの先端部は補強用構造体で支持して
いるため、耐圧性も補償される。Furthermore, since the tip of the heating cylinder is supported by a reinforcing structure, pressure resistance is also compensated.
第１図はこの発明の射出成形機における加熱シリンダの
部分を示す概略断面図、第２図は第１図のＡ部拡大断面
図、第３図は補強用構造体の部分を示すＢ部拡大断面図
である。
１・・加熱シリンダ、２・・窒化鉄材
３・・抵抗発熱体、４・・補強用構造体５・・金型、６
・・支持台、７・・スクリュー８・・ホッパ、９・・溝
。Fig. 1 is a schematic sectional view showing the heating cylinder part of the injection molding machine of the present invention, Fig. 2 is an enlarged sectional view of part A in Fig. 1, and Fig. 3 is an enlarged part B showing the reinforcing structure part. FIG. 1. Heating cylinder, 2. Iron nitride material 3. Resistance heating element, 4. Reinforcing structure 5. Mold, 6
...Support stand, 7..Screw 8..hopper, 9..groove.
Claims (1)
、該加熱シリンダの内壁面近傍に抵抗発熱体を設けて、
薄肉に形成しており、その射出側先端部において補強用
構造体で補強して金型側支持台へ取付け支持されてなる
射出成形機。The inner surface of the heating cylinder is reinforced with iron nitride material, and a resistance heating element is provided near the inner wall surface of the heating cylinder,
An injection molding machine that has a thin wall, is reinforced with a reinforcing structure at its injection side tip, and is mounted and supported on a mold side support stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18107086A JPS6337913A (en) | 1986-07-31 | 1986-07-31 | Injection molder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18107086A JPS6337913A (en) | 1986-07-31 | 1986-07-31 | Injection molder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6337913A true JPS6337913A (en) | 1988-02-18 |
| JPH0414864B2 JPH0414864B2 (en) | 1992-03-16 |
Family
ID=16094274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18107086A Granted JPS6337913A (en) | 1986-07-31 | 1986-07-31 | Injection molder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6337913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215526A (en) * | 1988-02-24 | 1989-08-29 | Meiki Co Ltd | Heating method for heating cylinder of injection device and device there |
-
1986
- 1986-07-31 JP JP18107086A patent/JPS6337913A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215526A (en) * | 1988-02-24 | 1989-08-29 | Meiki Co Ltd | Heating method for heating cylinder of injection device and device there |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0414864B2 (en) | 1992-03-16 |
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