JPS63135221A - Method for molding resin product - Google Patents

Method for molding resin product

Info

Publication number
JPS63135221A
JPS63135221A JP28283386A JP28283386A JPS63135221A JP S63135221 A JPS63135221 A JP S63135221A JP 28283386 A JP28283386 A JP 28283386A JP 28283386 A JP28283386 A JP 28283386A JP S63135221 A JPS63135221 A JP S63135221A
Authority
JP
Japan
Prior art keywords
mold
cavity
molten resin
resin
movable mold
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.)
Pending
Application number
JP28283386A
Other languages
Japanese (ja)
Inventor
Setsuji Yamamoto
山本　節二
Tsuneo Kurihara
栗原　恒夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP28283386A priority Critical patent/JPS63135221A/en
Publication of JPS63135221A publication Critical patent/JPS63135221A/en
Pending legal-status Critical Current

Links

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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5833—Measuring, controlling or regulating movement of moulds or mould parts, e.g. opening or closing, actuating
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • B29C2045/5615—Compression stroke, e.g. length thereof
    • B29C2045/562—Velocity profiles of the compression stroke
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • B29C2045/565—Closing of the mould during injection
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating

Abstract

PURPOSE:To shorten the cycle time required for molding and at the same time facilitate the control of temperature, metering and the like of resin material by a method wherein molten resin is injected under low pressure in a cavity in the middle of a course to advance a movable mold to a fixed mold for mold clamping and further the advancement of the movable mold is continued at low speed to the mold clamping completion position. CONSTITUTION:Mold clamping is started by advancing a movable mold 4 to a fixed mold 2 at high speed or at medium speed. After that, when the ingress of the movable mold 4 into the fixed mold 2 by the predetermined amount such as to the position about 5-10mm ahead the mold clamping completion position is detected with a limit switch 15, the forward speed of the movable mold 4 is changed-over to low speed. After that, a cavity 6 is evacuated and at the same time molten resin 7 is injected by the amount of material necessary for product from an injection unit 5 in the cavity 6 under low pressure (15-40kg/cm<2>). In succession, the mold clamping is continued at low speed. As a result, the molten resin 7 injected in the cavity 6 is compression- molded so as to copy the shape of the cavity. Next, when the molten resin 7 in the cavity 6 cools down and cures, the movable mold 4 is retreated and the resin in the form of a product is cleared out of the mold by being ejected with an ejector pin 13.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は射出成形と圧縮成形とをたくみに組合せた樹脂
製品の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for molding resin products that skillfully combines injection molding and compression molding.

（従来の技術） 樹脂材料を製品形状に成形するには一般に射出成形を行
っている。この射出成形は可動型を固定型に対して前進
させて型締めを行った後、可動型と固定型間に形成され
るキャビティ内に溶融樹脂を射出し、キャビティ内にて
冷却硬化せしめた後払い出すようにしている。(Prior Art) Injection molding is generally used to mold resin materials into product shapes. In this injection molding, the movable mold is moved forward relative to the fixed mold and the mold is clamped, then molten resin is injected into the cavity formed between the movable mold and the fixed mold, and the resin is cooled and hardened in the cavity. I'm trying to get it out.

そして、射出成形にあっては溶融樹脂をキャビティの隅
々まで完全に充填するために高い射出圧力でもって溶融
樹脂を射出し、またこの高い射出圧力に対抗して型締力
も大としている。In injection molding, the molten resin is injected at a high injection pressure in order to completely fill every corner of the cavity, and the mold clamping force is also increased to counter this high injection pressure.

一方製品に厚肉部と薄肉部がある場合には、厚肉部にお
いてひけが発生する不利がある。そこで特開昭１３０−
１１３８４３０号に開示される方法が提案されている。On the other hand, if the product has thick and thin parts, there is a disadvantage that sink marks occur in the thick parts. Therefore, JP-A-130-
A method disclosed in US Pat. No. 1,138,430 has been proposed.

この方法は可動型と固定型とを型締めした後。This method is used after the movable mold and fixed mold are clamped.

型間に形成されるキャビティ内に溶融樹脂を射出し、薄
肉部における溶融樹脂が硬化した後、可動型内に設けら
れるコア型を前進させ、厚肉部における溶融樹脂を加圧
しひけり発生を防止するといラものである。Molten resin is injected into the cavity formed between the molds, and after the molten resin in the thin wall part has hardened, the core mold provided in the movable mold is moved forward to pressurize the molten resin in the thick wall part and prevent shrinkage. This is a difficult thing to prevent.

（発明が解決しようとする問題点） 上述した特開昭８０−１８８４３０号に開示される方法
によれば製品の厚肉部におけるひけの発生を有効に防止
できるのであるが、製品の薄肉部となるキャビティ部分
まで溶融樹脂を完全に充填するには通常の射出成形と同
様に高圧にて射出しなければならず、型締め力も高圧に
て行う必要があり、それだけ型強度も向上させなければ
ならず、成形装置全体が高価なものとなる。(Problems to be Solved by the Invention) According to the method disclosed in JP-A-80-188430 mentioned above, it is possible to effectively prevent the occurrence of sink marks in the thick parts of the product. In order to completely fill the molten resin into the cavity, it is necessary to inject at high pressure as in normal injection molding, and the mold clamping force must also be applied at high pressure, which means that the mold strength must be improved accordingly. First, the entire molding device becomes expensive.

また、薄肉部が硬化した後、コア型を前進させているた
め、１回の成形時間が長くなるという問題もある。Furthermore, since the core mold is advanced after the thin-walled portion has hardened, there is also the problem that the time required for one molding process becomes long.

（問題点を解決するための手段） 上記問題点を解決すべく本発明ば、固定型に対し可動型
を前進させて型締めを行う行程の途中でキャビティ内に
溶融樹脂を低圧にて射出し、更に型締め完了位置まで低
速（低圧駆動）にて可動型の前進を継続するようにした
。(Means for Solving the Problems) In order to solve the above problems, the present invention injects molten resin into the cavity at low pressure during the process of moving the movable mold forward relative to the fixed mold and clamping the mold. Furthermore, the movable mold continues to move forward at low speed (low pressure drive) until the mold clamping completion position.

（作用） 型締めの途中でキャビティ内に射出された溶融樹脂は、
可動型の前進によってキャビティ形状に倣って圧縮成形
される。(Function) The molten resin injected into the cavity during mold clamping is
Compression molding is performed by moving the movable mold forward to follow the shape of the cavity.

（実施例） 以下に本発明の実施例を添付図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

第１図及び第２図は本発明に係る成形方法を経時的に示
した成形装置の断面図であり、成形装置は固定盤（１）
に取付けられた固定型（２）と、可動盤（３）に取付け
られた可動型（０とからなり、固定ｍ　（１）に形成し
た開口部（１ａ）にはスクリュータイプの射出装置（５
）が臨んでいる。この射出装置（５）には射出する溶融
樹脂を正確に計量する計量装置、逆流防止用のチェー７
クバルブ及び溶融樹脂のタレを防止するシャフトオフパ
ルプ等が付設されている。FIGS. 1 and 2 are cross-sectional views of a molding device showing the molding method according to the present invention over time, and the molding device has a fixed platen (1).
It consists of a fixed mold (2) attached to a movable platen (3) and a movable mold (0) attached to a movable platen (3), and a screw type injection device (5
) is coming. This injection device (5) includes a measuring device for accurately measuring the molten resin to be injected, and a chain 7 for preventing backflow.
A shaft-off pulp, etc. is attached to prevent the molten resin from dripping.

また、固定型（２）には固定型（２）と可動型（４）と
の間に形成されるキャビティ（６）内に前記射出装置（
５）からの溶融樹脂（７）を充填する通路（８）、キャ
ビティ（６）内を吸引減圧するための吸引通路（９）及
びキャビティ（８）内に充填された溶融樹＠（７）を冷
却硬化させるための冷却水通路（１０）が形成されてい
る。The fixed mold (2) also has the injection device (
A passage (8) for filling the molten resin (7) from 5), a suction passage (9) for suctioning and decompressing the inside of the cavity (6), and a molten resin @ (7) filled in the cavity (8). A cooling water passage (10) for cooling and hardening is formed.

一方、可動型（４）には冷却水通路（１１）及び貫通孔
（１２）が形成され、この貫通孔（１２）には可動型（
４）とは独立して進退動をなす押出しピン（１３）が挿
入されている。また可動型（０の固定型（２）内周面に
摺接する外周面にはシール部材（１０を全周に亘って設
けている。このシール部材（１４）は型内の空気及び材
料から発生するガスを排出するためのシールである。On the other hand, a cooling water passage (11) and a through hole (12) are formed in the movable mold (4), and the movable mold (4) is provided with a cooling water passage (11) and a through hole (12).
An extrusion pin (13) is inserted that moves forward and backward independently of the push-out pin (13). In addition, a seal member (10) is provided around the entire circumference on the outer peripheral surface that slides into contact with the inner peripheral surface of the fixed mold (2) of the movable mold (0. This is a seal for discharging the gas.

また、前記固定型（２）にはリミットスイッチ（１５）
を、可動型（４）には可動型（４）が前進して所定量固
定型（２）内に進入した時点で前記リミットスイッチ（
１５）を作動させるバー（１６）を取付けているが、固
定型（２）にバー（１６）を、可動型（４）にリミット
スイッチ（１５）を取付けるようにしてもよい、また、
図示例にあっては固定型（２）に形成した溶融樹１階充
填用の通路（８）は１本としたが、製品形状が長方形等
の異形形状の場合にはホットランナ−を用いた多点ゲー
トとしてもよい。The fixed type (2) also includes a limit switch (15).
When the movable mold (4) moves forward and enters the fixed mold (2) by a predetermined amount, the limit switch (
15), the bar (16) may be attached to the fixed type (2) and the limit switch (15) may be attached to the movable type (4).
In the illustrated example, there is one channel (8) for filling the first floor of molten wood formed in the fixed mold (2), but if the product shape is an irregular shape such as a rectangle, a hot runner may be used. It may also be a multi-point gate.

以上の如き構成の成形装置を用いた成形方法を以下に述
べる。A molding method using the molding apparatus configured as above will be described below.

先ず固定型（２）に対し可動型（４）を高速又は中速に
て前進せしめ型締めを開始する。そして、可動型（４）
が固定型（２）内に所定量、例えば型締め完了位置の手
前５ｍｍ−１０ｍｍ程度まで進入したことをリミットス
イッチ（１５）によって感知したならば、可動型（４）
の前進速度を低速に切換え、キャビティ（８）を減圧し
これと同時にキャビティ（６）内に第１図に示すように
射出装置（５）から製品材料分の溶融樹脂（７）を低圧
（１５ｋｇ／ｃｍ　２〜４０ｋｇ／ｃｍ　２　）にて射
出する。そして引き続いて低速にて型締めを続行する。First, the movable mold (4) is advanced relative to the fixed mold (2) at high or medium speed to start mold clamping. And movable type (4)
When the limit switch (15) detects that the mold has entered the fixed mold (2) by a predetermined amount, for example, 5 mm to 10 mm before the mold clamping completion position, the movable mold (4)
The forward speed of the is switched to low speed, the pressure in the cavity (8) is reduced, and at the same time, the molten resin (7) equivalent to the product material is injected into the cavity (6) at low pressure (15 kg) from the injection device (5) as shown in Figure 1. /cm2~40kg/cm2). Then, mold clamping continues at low speed.

すると第２図に示すようにキャビティ（６）内に射出さ
れた溶融樹脂（７）はキャビティ形状に倣って圧縮成形
される。Then, as shown in FIG. 2, the molten resin (7) injected into the cavity (6) is compression molded to follow the shape of the cavity.

次いでキャビティ（６）内の溶融樹脂（７）が冷却硬化
したならば、可動型（０を後退せしめ、押出しピン（１
３）を突出させて製品となった樹脂を払い出す。Next, once the molten resin (7) in the cavity (6) has cooled and hardened, the movable mold (0) is moved back and the extrusion pin (1) is moved back.
3) to protrude and pay out the resin that has become a product.

（発明の効果） 以上に説明した本発明によれば以下の如き効果を発揮す
る。(Effects of the Invention) According to the present invention described above, the following effects are achieved.

先ず、型締め行程中にこの型締めを停止しすることなく
型締を継続しつつ樹脂を射出するため。First, to inject resin while continuing mold clamping without stopping the mold clamping process.

成形に要するサイクルタイムを短縮することができる。The cycle time required for molding can be shortened.

つまり従来の射出成形にあっては型締め完了後に溶融樹
脂を射出していたためサイクルタイムが長くなっていた
がこれを解決することが可能となる。In other words, in conventional injection molding, the molten resin is injected after the mold clamping is completed, which increases the cycle time, but this can be solved.

また、従来の圧縮成形にあっては型開き状態で樹脂材を
供給しているため、樹脂材の温度管理、計量等が困難で
あったが、本発明方法によればこの不利が解消される。In addition, in conventional compression molding, the resin material is supplied with the mold open, making it difficult to control the temperature and measure the resin material, but the method of the present invention eliminates this disadvantage. .

また、溶融樹脂を射出する場合、キャビティの細部まで
射出の圧力によって充填する必要がないため、射出圧力
が低圧で済み、射出圧力が低圧なため型の強度及び型締
め力も小さくて済み、装置全体のコスト低減を図れ、更
に圧縮によってキャビティ細部への充填を行うため薄肉
成形に適し、且つ射出成形特有のフローマーク、ウェル
ドライン及びひけ等の問題も発生しない。In addition, when injecting molten resin, it is not necessary to fill the details of the cavity with injection pressure, so the injection pressure can be low, and because the injection pressure is low, the strength of the mold and mold clamping force can be small, and the entire device Furthermore, since the cavity is filled into the details of the cavity by compression, it is suitable for thin-wall molding, and does not cause problems such as flow marks, weld lines, and sink marks that are typical of injection molding.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は本発明方法を実施する成形装置の断
面図である。 尚１図面中（２）は固定型、（４）は可動型、（５）は
射出装置、（６）はキャビティ、（７）は溶融樹脂であ
る。1 and 2 are cross-sectional views of a molding apparatus for carrying out the method of the present invention. In one drawing, (2) is a fixed type, (4) is a movable type, (5) is an injection device, (6) is a cavity, and (7) is a molten resin.

Claims (2)

【特許請求の範囲】[Claims] （１）固定型に対し可動型を摺動前進せしめて型締めす
る行程の型締め終了位置の手前において、固定型と可動
型間に形成されるキャビティ内に製品材料分の溶融樹脂
を低圧にて射出し、次いで型締め位置まで低速で型締め
を継続してキャビティ内に射出された溶融樹脂を圧縮成
形するようにしたことを特徴とする樹脂製品の成形方法
。(1) In the process of sliding the movable mold forward relative to the fixed mold and clamping the mold, before the mold clamping end position, the molten resin equivalent to the product material is placed at low pressure into the cavity formed between the fixed mold and the movable mold. A method for molding a resin product, characterized in that the molten resin injected into the cavity is compression molded by injecting the resin into the cavity, and then continuing to clamp the mold at low speed until it reaches the mold clamping position. （２）前記型締め時に圧縮されるキャビティ内のガスは
固定型と可動型の摺動面の一方に設けた樹脂漏れを防止
するシート部を介して外部に放出されることを特徴とす
る特許請求の範囲第１項記載の樹脂製品の成形方法。(2) A patent characterized in that the gas in the cavity that is compressed when the mold is clamped is released to the outside through a sheet part that prevents resin leakage and is provided on one of the sliding surfaces of the fixed mold and the movable mold. A method for molding a resin product according to claim 1.
JP28283386A 1986-11-27 1986-11-27 Method for molding resin product Pending JPS63135221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28283386A JPS63135221A (en) 1986-11-27 1986-11-27 Method for molding resin product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28283386A JPS63135221A (en) 1986-11-27 1986-11-27 Method for molding resin product

Publications (1)

Publication Number Publication Date
JPS63135221A true JPS63135221A (en) 1988-06-07

Family

ID=17657667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28283386A Pending JPS63135221A (en) 1986-11-27 1986-11-27 Method for molding resin product

Country Status (1)

Country Link
JP (1) JPS63135221A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333198A2 (en) * 1988-03-16 1989-09-20 Sumitomo Chemical Company, Limited Process for producing a multilayer molded article
WO1990003422A1 (en) * 1988-09-28 1990-04-05 Dai Nippon Insatsu Kabushiki Kaisha Slider
EP0402645A2 (en) * 1989-06-13 1990-12-19 Tetra Laval Holdings & Finance SA Apparatus for coating a thermoplastic part by means of injection moulding
WO2005032796A1 (en) * 2003-10-06 2005-04-14 Sumitomo Heavy Industries, Ltd. Injection molding machine and injection molding method
JP2005288771A (en) * 2004-03-31 2005-10-20 Sumitomo Chemical Co Ltd Method for producing thermoplastic resin molding
WO2007098517A1 (en) * 2006-03-01 2007-09-07 Haidlmair Holding Gmbh Method and injection mould for producing a carrier element, especially a transport pallet
CN104626536A (en) * 2015-02-27 2015-05-20 吉林钰翎珑钢管钢构制造有限公司 Hot melting fixture for preparing composite pipe by lining metal pipe with plastic
CN111070535A (en) * 2019-12-11 2020-04-28 青岛海信模具有限公司 Compression molding die

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101322A (en) * 1982-12-02 1984-06-11 Sumitomo Chem Co Ltd Method of press molding thermoplastic resin
JPS6122917A (en) * 1984-07-10 1986-01-31 Sumitomo Chem Co Ltd Press-molding method of thermoplastic resin

Patent Citations (2)

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JPS59101322A (en) * 1982-12-02 1984-06-11 Sumitomo Chem Co Ltd Method of press molding thermoplastic resin
JPS6122917A (en) * 1984-07-10 1986-01-31 Sumitomo Chem Co Ltd Press-molding method of thermoplastic resin

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333198A2 (en) * 1988-03-16 1989-09-20 Sumitomo Chemical Company, Limited Process for producing a multilayer molded article
US5154872A (en) * 1988-03-16 1992-10-13 Sumitomo Chemical Company, Limited Process for producing a multilayer molded article
WO1990003422A1 (en) * 1988-09-28 1990-04-05 Dai Nippon Insatsu Kabushiki Kaisha Slider
EP0402645A2 (en) * 1989-06-13 1990-12-19 Tetra Laval Holdings & Finance SA Apparatus for coating a thermoplastic part by means of injection moulding
US5667745A (en) * 1989-06-13 1997-09-16 Tetra Laval Holdings & Finance S.A. Method for the integral molding of a synthetic thermoplastics part
US7501083B2 (en) 2003-10-06 2009-03-10 Sumitomo Heavy Industries, Ltd. Injection molding machine and injection molding method
KR100731688B1 (en) 2003-10-06 2007-06-22 스미도모쥬기가이고교 가부시키가이샤 Injection molding machine and injection molding method
WO2005032796A1 (en) * 2003-10-06 2005-04-14 Sumitomo Heavy Industries, Ltd. Injection molding machine and injection molding method
JP2005288771A (en) * 2004-03-31 2005-10-20 Sumitomo Chemical Co Ltd Method for producing thermoplastic resin molding
WO2007098517A1 (en) * 2006-03-01 2007-09-07 Haidlmair Holding Gmbh Method and injection mould for producing a carrier element, especially a transport pallet
CN104626536A (en) * 2015-02-27 2015-05-20 吉林钰翎珑钢管钢构制造有限公司 Hot melting fixture for preparing composite pipe by lining metal pipe with plastic
CN111070535A (en) * 2019-12-11 2020-04-28 青岛海信模具有限公司 Compression molding die
CN111070535B (en) * 2019-12-11 2021-11-05 青岛海信模具有限公司 Compression molding die

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