JP2640612B2 - Gate cutting method in injection molding die - Google Patents
Gate cutting method in injection molding dieInfo
- Publication number
- JP2640612B2 JP2640612B2 JP16420893A JP16420893A JP2640612B2 JP 2640612 B2 JP2640612 B2 JP 2640612B2 JP 16420893 A JP16420893 A JP 16420893A JP 16420893 A JP16420893 A JP 16420893A JP 2640612 B2 JP2640612 B2 JP 2640612B2
- Authority
- JP
- Japan
- Prior art keywords
- gate
- plate
- product
- molding resin
- 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.)
- Expired - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチックの射出成
形用金型におけるゲ−ト切断方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting a gate in a plastic injection mold.
【０００２】[0002]
【従来の技術とその課題】一般に、プラスチック射出成
形用金型におけるゲ−トは、金型の製品彫込み部（成形
予定空間または製品用キャビティともいう）に直接隣設
する注入口を指しているが、この注入口で成形されたゲ
−ト成形樹脂は成形後、トリミングされて後仕上げされ
る。かかるゲ−ト成形樹脂のトリミング等の作業を省く
ために、ゲ−トをピンポイントゲ−トやトンネルゲ−ト
等のシアゲ−トに構成する他、次のようなゲ−ト切断装
置が知られている。2. Description of the Related Art Generally, a gate in a plastic injection mold refers to an injection port provided directly adjacent to a product engraving portion (also referred to as a molding space or a product cavity) of the mold. However, the gate molding resin molded at this injection port is trimmed and finished after molding. In order to omit such operations as trimming of the gate molding resin, the gate is constituted by a sheer gate such as a pinpoint gate or a tunnel gate, and the following gate cutting device is known. Have been.
【０００３】すなわち、その一つにストリッパ−プレ−
トによるゲ−ト切断装置があって、これは、成形品（製
品）を取出すときに突出しピンでは取出し困難な場合
や、成形品に突出しピンの跡が付くのを防ぐ場合に、ス
トリッパ−プレ−トによって成形品を取出しているが、
かかるストリッパ−プレ−トにより成形品を取出す際
に、剪断作用によりゲ−トを切断する装置である（例え
ば、「産業図書発行、実用プラスチック成形加工便覧第
２５４頁」または、特公平３−２１３２５号公報参
照）。[0003] That is, one of them is a stripper pre-press.
There is a gate cutting device which removes a molded article (product) when it is difficult to remove the molded article (product) with a protruding pin, or when a molded article (product) is to be prevented from sticking out of a protruding pin. -The molded product is taken out by
When the molded product is taken out by the stripper plate, it is a device for cutting the gate by a shearing action (for example, "Handbook of Practical Plastic Molding," published by Sangyo Tosho, page 254 or Japanese Patent Publication No. 3-21325). Reference).
【０００４】しかしながら、かかるストリッパ−プレ−
トによるゲ−ト切断装置では、剪断作用におけるシャ−
角（周知のごとく、上下１対の剪断刃を合せて切断する
場合、切断する部分を短くして剪断荷重を小にするた
め、剪断刃を相互に傾けているが、この傾き角をシャ−
角という）が零であるため、切れ味が悪い、という問題
があった。[0004] However, such a stripper pre-
In the gate cutting device using a shear, the shear in the shearing action is reduced.
Angle (As is well known, when a pair of upper and lower shearing blades are cut together, the shearing blades are mutually inclined in order to shorten the cut portion and reduce the shearing load.
Since the angle is zero, there is a problem that the sharpness is poor.
【０００５】一方、実公昭５６−２９１３６号公報に
は、剪断作用のシャ−角類似の切断機能を付与して、切
れ味を良くするゲ−ト切断装置が示されている。すなわ
ち、固定側金型と可動側金型とで構成されるキャビティ
に下方から溶融樹脂を充填するセンタ−ゲ−ト方式にお
いて、このゲ−トに、薄い金型部分を介して、切断用棒
を隣設し、この切断用棒の貫通孔をゲ−トに並設し、型
開きと同時にこの貫通孔によって製品からゲ−ト成形樹
脂を切断するゲ−ト切断装置が提案されている。On the other hand, Japanese Utility Model Publication No. 56-29136 discloses a gate cutting device which improves the sharpness by imparting a shearing function similar to a shearing angle of a shearing action. That is, in a center gate system in which a cavity formed by a fixed mold and a movable mold is filled with molten resin from below, a cutting rod is inserted into the gate through a thin mold portion. A gate cutting device has been proposed in which a through-hole of the cutting rod is juxtaposed to the gate, and the gate molding resin is cut from the product by the through-hole simultaneously with opening of the mold.
【０００６】しかしながら、かかる提案のゲ−ト切断装
置では、貫通孔に位置する成形材料、つまりゲ−ト成形
樹脂は、ランナ−成形樹脂と共に強制的に引き出そうと
しても、すでに断片となっているので、自然落下しか期
待できない。したがって、多くの成形サイクル中には、
この断片が貫通孔に残るおそれがある、という問題があ
った。そこで本発明の目的は、円形のゲ−ト切断刃に断
片を残さないことにある。However, in such a proposed gate cutting device, the molding material located in the through hole, that is, the gate molding resin is already fragmented even if it is forcibly pulled out together with the runner molding resin. So you can only expect natural fall. Therefore, during many molding cycles,
There is a problem that this fragment may remain in the through hole. It is an object of the present invention to leave no fragments on the circular gate cutting blade.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨とするとこ
ろは、射出成形に用いる金型のパーティングライン上
に、製品およびランナー成形樹脂取出兼用のストリッパ
ープレートを設け、該ストリッパープレートに摺動自在
に挿通され、かつ、製品に向け縮径した円錐状ゲートを
有し、しかも、型閉め時に、該ゲートがストリッパープ
レートより固定側に位置しているゲート棒を、可動側取
付板に設け、型開き後に、前記ストリッパープレートを
固定側へ移動させて、製品およびランナー成形樹脂を取
出すと共に、ランナー成形樹脂と一体化したゲート成形
樹脂を、製品から切断することを特徴とする射出成形用
金型におけるゲート切断方法にあり、また、２）ゲート
を大口径とし、樹脂を流動性の低い樹脂とした請求項１
記載の射出成形用金型におけるゲート切断方法にある。SUMMARY OF THE INVENTION The gist of the present invention is to provide a stripper plate for taking out a product and a runner molding resin on a parting line of a mold used for injection molding, and to slide on the stripper plate. A gate rod that is freely inserted and has a conical gate whose diameter is reduced toward the product, and the gate is located on the fixed side of the stripper plate when the mold is closed, is provided on the movable side mounting plate, After opening the mold, the stripper plate is moved to the fixed side to take out the product and the runner molding resin, and the gate molding resin integrated with the runner molding resin is cut from the product. 2. The method according to claim 1, wherein the gate has a large diameter and the resin is a resin having low fluidity.
The gate cutting method in the injection mold described above.
【０００８】[0008]
【実施例】本発明を添付図面に示す実施例装置により詳
細に述べる。図１は本発明の実施例で使用する金型の要
部断面図、図２は図１の作動模式図、図３は図２の拡大
模式図である。BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail by means of an embodiment shown in the accompanying drawings. FIG. 1 is a sectional view of a main part of a mold used in an embodiment of the present invention, FIG. 2 is an operation schematic diagram of FIG. 1, and FIG. 3 is an enlarged schematic diagram of FIG.
【０００９】本実施例は、下水道施設に用いられる硬質
塩化樹脂の継手、例えば、ＤＳ継手やキヤップを射出成
形するための金型におけるゲ−ト切断方法に適用され
る。なお、この製品が、例えばＤＳ継手であれば、呼び
径約３００〜３５０mmφ、肉厚約３mmの寸法になってい
る。The present embodiment is applied to a gate cutting method in a mold for injection molding a hard chloride resin joint used in a sewerage facility, for example, a DS joint or a cap. If this product is, for example, a DS joint, it has a nominal diameter of about 300 to 350 mm φ and a wall thickness of about 3 mm .
【００１０】これらの図において、１ａは成形品（図示
のものは、ＤＳ継手、すなわち、１対の塩ビパイプを接
続するための接着接合用ソケットを示している）であっ
て、これは、固定側コア２および固定側キャビティ３
と、可動側コア４およびストリッパ−プレ−ト５とで構
成された製品金型彫込み部１によって成形される。ここ
において、固定側キャビティ３は固定側コア２に対し若
干移動するようになっており、ストリッパ−プレ−ト５
は可動側コア４に対し、この可動側コア４に付着してい
る成形品１ａを取出すため、大きく移動するようになっ
ている。[0010] In these figures, reference numeral 1a denotes a molded article (the figure shows a DS joint, ie, an adhesive joint socket for connecting a pair of PVC pipes), which is fixed. Side core 2 and fixed side cavity 3
And a product die engraving portion 1 composed of a movable core 4 and a stripper plate 5. Here, the fixed-side cavity 3 is slightly moved with respect to the fixed-side core 2, and the stripper plate 5
Moves largely with respect to the movable side core 4 in order to remove the molded article 1a attached to the movable side core 4.
【００１１】前記製品金型彫込み部１にはゲ−ト６が隣
設して設けられていて、このゲ−ト６はゲ−ト棒７の先
端側に貫通孔として設けられている。このゲ−ト６は詳
細を省略するが、製品金型彫込み部１に向け縮径された
円錐状短辺リング（焼入れしたもの）がゲ−ト棒７の先
端側に設けられている。この短辺リングの縮径端内周に
は、約６mm〜８mmφの円形の切断用エッジが突設されて
いて、このエッジによる切断がシャ−角と類似の切断機
能を果たしている。このゲ−ト棒７の基部は受け板８に
固定されていて、この受け板８には、前記可動側コア４
も固定されているので、ゲ−ト棒７は成形品１ａが付着
している可動側コア４と共に、型開き時に、図１の型開
き方向ａに移動する。そして、ゲ−ト棒７はストリッパ
−プレ−ト５に摺動自在に挿通され、ゲ−ト６はストリ
ッパ−プレ−ト５より固定金型側に位置して開口してい
る。A gate 6 is provided adjacent to the product die engraving portion 1, and the gate 6 is provided as a through hole at the tip end of a gate bar 7. Although the details of the gate 6 are omitted, a conical short side ring (hardened) whose diameter is reduced toward the product die engraving portion 1 is provided on the tip end side of the gate rod 7. A circular cutting edge having a diameter of about 6 mm to 8 mm protrudes from the inner circumference of the reduced diameter end of the short side ring, and the cutting by this edge fulfills a cutting function similar to the shear angle. The base of the gate bar 7 is fixed to a receiving plate 8, and the receiving side of the movable core 4
The gate rod 7 moves in the mold opening direction a in FIG. 1 when the mold is opened together with the movable core 4 to which the molded article 1a is attached. The gate bar 7 is slidably inserted into the stripper plate 5, and the gate 6 is located closer to the fixed mold than the stripper plate 5 and is open.
【００１２】この受け板８には可動側型板９を介して、
前記ストリッパ−プレ−ト５が接離自在に接合されてい
る。このストリッパ−プレ−ト５は、連結ロッド１０を
介して、押出板１１に固定されている。このストリッパ
−プレ−ト５と連結ロッド１０とはボルト１２によって
固定されている。この押出板１１にはエジェクタ−ピン
１３が突設され、このエジェクタ−ピン１３はスプル−
１４に対向して設けられている。このスプル−１４はラ
ンナ−１５とコ−ルドスラグウエル１６に連通され、ま
た、ランナ−１５はＬ字状になってゲ−ト棒７およびス
トリッパ−プレ−ト５に沿って前記ゲ−ト６に連通され
ている。The receiving plate 8 is provided with a movable mold plate 9 therebetween.
The stripper plate 5 is joined so as to be able to freely contact and separate. The stripper plate 5 is fixed to an extruded plate 11 via a connecting rod 10. The stripper plate 5 and the connecting rod 10 are fixed by bolts 12. An ejector pin 13 protrudes from the push plate 11, and the ejector pin 13 is
14 are provided. The sprue 14 communicates with a runner 15 and a cold slug well 16, and the runner 15 is formed in an L shape along the gate bar 7 and the stripper plate 5. 6 is connected.
【００１３】前記固定側コア３は、スプル−ブッシュ１
７が取付けられている固定側取付板１８に固定されてい
る。この固定側取付板１８には固定側型板１９が固定さ
れ、この固定側型板１９には若干離間する前記固定側キ
ャビティ３が設けられている。この固定側キャビティ３
には規制ボルト２０が植設され、この規制ボルト２０の
頭部２０ａが固定側取付板１８に軸方向に若干移動自在
に嵌合されている。この固定側キャビティ３と前記固定
側型板１９との間には、型開き用のバネ２１が介在して
いる。The fixed side core 3 includes a sprue-bush 1
7 is fixed to a fixed-side mounting plate 18 to which is mounted. A fixed-side mold plate 19 is fixed to the fixed-side mounting plate 18, and the fixed-side mold plate 19 is provided with the fixed-side cavity 3 that is slightly separated. This fixed side cavity 3
A restricting bolt 20 is implanted in the head, and a head 20a of the restricting bolt 20 is fitted to the fixed-side mounting plate 18 so as to be slightly movable in the axial direction. A spring 21 for opening the mold is interposed between the fixed cavity 3 and the fixed mold plate 19.
【００１４】なお、図１で、２２は可動側取付板、２３
はスペ−サ、２４は冷却筒、ＰＬは製品取出用分割線、
つまりパ−ティングライン、ｂは固定側キャビティ３の
接離線、ｃはストリッパ−プレ−ト５の接離線を示す。In FIG. 1, reference numeral 22 denotes a movable-side mounting plate;
Is a spacer, 24 is a cooling cylinder, PL is a parting line for taking out a product,
That is, the parting line, b represents the contact / separation line of the fixed side cavity 3, and c represents the contact / separation line of the stripper plate 5.
【００１５】次に、本実施例装置の作用を述べる。溶融
樹脂がスプル−１４から注入され、これが冷却されて成
形品１ａが成形される。そこで先ず、可動側取付板２２
が型開き方向ａに移動し始めると、バネ２１によって、
固定側キャビティ３が接離線ｂの所で若干、型開き方向
ａに離間する。したがって、成形品１ａは固定側コア２
から離れて可動側コア４に付着する。次いで、可動側取
出板２２がパ−ティングラインＰＬから型開き方向ａに
大きく移動すると、成形品１ａ、可動側キャビティ４、
ストリッパ−プレ−ト５、受け板８、可動側型板９、連
結ロッド１０、押出板１１、エジェクタ−ピン１３等は
一体となって型開き方向ａに移動する。このとき、固定
側キャビティ３は規制ボルト２０により規制されている
ので移動しない。したがって、固定側キャビティ３と可
動側コア４との間には、成形品１ａを取出すための充分
な空間ができる。その結果、成形品１ａの略半分、ラン
ナ−成形樹脂１５ａおよびスプル−成形樹脂１４ａは露
出される。Next, the operation of the present embodiment will be described. A molten resin is injected from the sprue 14, which is cooled to form a molded product 1a. Therefore, first, the movable side mounting plate 22
Begins to move in the mold opening direction a, the spring 21
The fixed side cavity 3 is slightly separated in the mold opening direction a at the contact / separation line b. Therefore, the molded product 1a is
And adheres to the movable side core 4. Next, when the movable side take-out plate 22 largely moves from the parting line PL in the mold opening direction a, the molded product 1a, the movable side cavity 4,
The stripper plate 5, the receiving plate 8, the movable mold plate 9, the connecting rod 10, the pushing plate 11, the ejector pin 13 and the like move integrally in the mold opening direction a. At this time, the fixed side cavity 3 does not move because it is regulated by the regulation bolt 20. Therefore, a sufficient space is formed between the fixed side cavity 3 and the movable side core 4 to take out the molded product 1a. As a result, approximately half of the molded product 1a, the runner molding resin 15a and the sprue molding resin 14a are exposed.
【００１６】次いで、更に可動側取付板２２が型開き方
向ａに移動し、押出板１１がロックされると、すなわ
ち、相対的に、押出板１１が反ａ方向に移動すると、ス
トリッパ−プレ−ト５およびエジェクタ−ピン１３が反
ａ方向に移動する。そのとき、ゲ−ト棒７は受け板８に
固定されているので、図２に示すように成形品１ａとゲ
−ト成形樹脂６ａとは、ゲ−ト６によって剪断されると
共に、成形品１ａや、ランナ−成形樹脂１５ａおよびス
プル−成形樹脂１４ａは、いわゆるストリッパ−プレ−
ト突出法によって突出される。Next, when the movable-side mounting plate 22 further moves in the mold opening direction a and the push-out plate 11 is locked, that is, when the push-out plate 11 relatively moves in the counter-a direction, the stripper-preformer is moved. 5 and the ejector pin 13 move in the anti-a direction. At this time, since the gate bar 7 is fixed to the receiving plate 8, the molded product 1a and the gate molding resin 6a are sheared by the gate 6 and the molded product is formed as shown in FIG. 1a, runner molding resin 15a and sprue molding resin 14a are so-called stripper preforms.
It is projected by the projection method.
【００１７】ここにおいて、ゲ−ト６は前記のように円
錐状短辺リングで構成されており、また、ゲ−ト成形樹
脂６ａはランナ−成形樹脂１５ａの若干の樹脂弾性によ
り図２中、ｄ方向に揺動するので、ゲ−ト成形樹脂６ａ
は、ランナ−成形樹脂１５ａと一体となってゲ−ト６か
ら離脱する。したがって、ゲ−ト６にはゲ−ト成形樹脂
６ａが残らない。Here, the gate 6 is constituted by a conical short side ring as described above, and the gate molding resin 6a is formed by a slight resin elasticity of the runner molding resin 15a in FIG. Since it swings in the direction d, the gate molding resin 6a
Is separated from the gate 6 integrally with the runner molding resin 15a. Therefore, the gate molding resin 6a does not remain on the gate 6.
【００１８】これを更に詳しく述べると、図３に示すよ
うに、ストリッパ−プレ−ト５の移動により、ランナ−
成形樹脂５ａがランナ−５から押出されるが、ゲ−ト成
形樹脂６ａは、ゲ−ト６で掴持されているので、Ｌ字状
のランナ−成形樹脂１５ａが樹脂弾性により簡単に弯曲
する。その結果、ゲ−ト成形樹脂６ａはゲ−ト６の円錐
状短辺リングから矢印よりの方向に円滑に移動しな
がら脱出する。つまり、図２のｄ方向に揺動して離脱す
る。なお、本発明では、必ずしも流動性の低い樹脂を対
象にしていない。また、本明細書におけるゲ−ト棒と
は、実施例の短冊状の板体のみならず、角棒等も含まれ
る。More specifically, as shown in FIG. 3, the movement of the stripper plate 5 causes the runner plate to move.
The molding resin 5a is extruded from the runner 5, but since the gate molding resin 6a is gripped by the gate 6, the L-shaped runner molding resin 15a is easily bent by the resin elasticity. . As a result, the gate molding resin 6a escapes from the conical short side ring of the gate 6 while smoothly moving in the direction indicated by the arrow. In other words, it swings in the direction d in FIG. In the present invention, a resin having low fluidity is not necessarily intended. In addition, the gate bar in the present specification includes not only the strip-shaped plate of the embodiment but also a square bar and the like.
【００１９】[0019]
【発明の効果】本発明によれば、 製品およびランナ−成形樹脂取出用のストリッパ−プ
レ−トと、このプレ−トに挿通したゲ−ト棒との相対運
動により、製品からゲ−ト成形樹脂を切断し、しかも、
このゲ−ト成形樹脂はランナ−成形樹脂と一体になって
いるので、ゲ−トには切断されたゲ−ト成形樹脂が残ら
ない。 また、ストリッパ−プレ−トにより製品とランナ−成
形樹脂とを同時に取出すので、別にランナ−用ストリッ
パ−プレ−トが必要でなく、金型を簡素化することがで
きる。 ゲ−ト切断を円錐状短辺リングで行うので、シャ−角
類似の剪断となって良好な切断ができる。According to the present invention, a product is formed from a product by a relative movement between a stripper plate for removing a product and a runner molding resin and a gate rod inserted through the plate. Cut the resin, and
Since the gate molding resin is integrated with the runner molding resin, no cut gate molding resin remains on the gate. Further, since the product and the runner molding resin are simultaneously taken out by the stripper plate, a separate stripper plate for a runner is not required, and the mold can be simplified. Since the gate cutting is performed by the conical short side ring, shearing similar to the shear angle is performed, and good cutting can be performed.
【図１】本発明を実施する金型の要部断面図である。FIG. 1 is a sectional view of a main part of a mold for carrying out the present invention.
【図２】図１の作動模式図である。FIG. 2 is an operation schematic diagram of FIG. 1;
【図３】図２の拡大模式図である。FIG. 3 is an enlarged schematic diagram of FIG. 2;
１ａ…成形品、２…固定側コア、３…固定側キャビテ
ィ、４…可動側コア、５…ストリッパ−プレ−ト、６…
ゲ−ト、６ａ…ゲ−ト成形樹脂、７…ゲ−ト棒、１５…
ランナ−、１５ａ…ランナ−成形樹脂1a: molded product, 2: fixed side core, 3: fixed side cavity, 4: movable side core, 5: stripper plate, 6 ...
Gate, 6a: Gate molding resin, 7: Gate rod, 15 ...
Runner, 15a ... runner molding resin
Claims (2)
イン上に、製品およびランナー成形樹脂取出兼用のスト
リッパープレートを設け、該ストリッパープレートに摺
動自在に挿通され、かつ、製品に向け縮径した円錐状ゲ
ートを有し、しかも、型閉め時に、該ゲートがストリッ
パープレートより固定側に位置しているゲート棒を、可
動側取付板に設け、型開き後に、前記ストリッパープレ
ートを固定側へ移動させて、製品およびランナー成形樹
脂を取出すと共に、ランナー成形樹脂と一体化したゲー
ト成形樹脂を、製品から切断することを特徴とする射出
成形用金型におけるゲート切断方法。1. A stripper plate for taking out a product and a runner molding resin is provided on a parting line of a mold used for injection molding, and the stripper plate is slidably inserted through the stripper plate and reduced in diameter toward the product. It has a conical gate, moreover, at the time of mold closing, the gate bars the gate is positioned on the fixed side of the Strip <br/> Per plate, provided on the movable side mounting plate, after mold opening, the stripper A gate cutting method in an injection molding die, comprising: moving a plate to a fixed side to take out a product and a runner molding resin; and cutting the gate molding resin integrated with the runner molding resin from the product.
い樹脂とした請求項１記載の射出成形用金型におけるゲ
−ト切断方法。2. The method of cutting a gate in an injection mold according to claim 1, wherein the gate has a large diameter and the resin has low fluidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16420893A JP2640612B2 (en) | 1993-06-07 | 1993-06-07 | Gate cutting method in injection molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16420893A JP2640612B2 (en) | 1993-06-07 | 1993-06-07 | Gate cutting method in injection molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06344397A JPH06344397A (en) | 1994-12-20 |
| JP2640612B2 true JP2640612B2 (en) | 1997-08-13 |
Family
ID=15788724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16420893A Expired - Lifetime JP2640612B2 (en) | 1993-06-07 | 1993-06-07 | Gate cutting method in injection molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2640612B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737804A (en) * | 2013-12-11 | 2014-04-23 | 思柏精密模具注塑（无锡）有限公司 | Precision mould of combined-type carbon powder cartridge main member |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653124A (en) * | 2012-05-24 | 2012-09-05 | 山西惠丰机械工业有限公司 | Automatic cutting device of restrictive pouring gate of injection mold |
| CN103612374B (en) * | 2013-12-03 | 2015-07-22 | 大连普阳铁路机车车辆配件有限公司 | Surface treatment equipment for engineering plastic retainer |
| CN115320037B (en) * | 2022-08-23 | 2024-06-18 | 安徽新贝发制笔城有限公司 | Plastic pen tube injection molding equipment |
-
1993
- 1993-06-07 JP JP16420893A patent/JP2640612B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737804A (en) * | 2013-12-11 | 2014-04-23 | 思柏精密模具注塑（无锡）有限公司 | Precision mould of combined-type carbon powder cartridge main member |
| CN103737804B (en) * | 2013-12-11 | 2016-03-09 | 思柏精密模具注塑（无锡）有限公司 | The precision die of combined type main component of toner cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06344397A (en) | 1994-12-20 |
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