JPH0719772Y2 - Bumper mold - Google Patents
Bumper moldInfo
- Publication number
- JPH0719772Y2 JPH0719772Y2 JP2619790U JP2619790U JPH0719772Y2 JP H0719772 Y2 JPH0719772 Y2 JP H0719772Y2 JP 2619790 U JP2619790 U JP 2619790U JP 2619790 U JP2619790 U JP 2619790U JP H0719772 Y2 JPH0719772 Y2 JP H0719772Y2
- Authority
- JP
- Japan
- Prior art keywords
- die
- bumper
- molding
- mold
- folded
- 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
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、自動車用樹脂バンパーの射出成形等に用いる
成形型に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a mold used for injection molding of resin bumpers for automobiles.
自動車用の樹脂バンパーの成形には、従来より射出成形
法や反応射出成形法が用いられている。これらの方法で
は分割可能な成形型を組み合わせて、型内に加熱したポ
リプロピレン等の熱可塑性樹脂やポリウレタン等の反応
硬化性樹脂を注型して、冷却又は反応により硬化させた
後成形型を分割して製品取り出しを行なっている。Injection molding and reaction injection molding have been conventionally used for molding resin bumpers for automobiles. In these methods, molds that can be divided are combined, a thermoplastic resin such as polypropylene that has been heated or a reaction curable resin such as polyurethane is poured into the mold, and the mold is divided after cooling or curing by reaction. I take out the product.
通常、自動車用バンパーは美観の点から長手方向両端部
に折り返し部分を設け、内部が見えないような構造とし
ているが、この折り返し部分は、成形型が相互に入り組
んだ状態となり、成形後にこのままでは型を開くことが
できない、いわゆるアンダーカット形状となっている。Normally, automobile bumpers have a structure in which folded parts are provided at both ends in the longitudinal direction from the viewpoint of aesthetics so that the inside cannot be seen. It has a so-called undercut shape that the mold cannot be opened.
このため従来から、この折り返し部分では、第５図に示
すようにバンパー外面を成形する下型52を分割して、折
り返し部に抜き型51を設ける成形型のアンダーカット処
理が行なわれている。バンパー54成形完了後型を開く
際、まず前記抜き型51を図の矢印Ａ方向に抜き、成形品
（バンパー）54のアンダーカット部58が抜き型51と干渉
しないようにしてから、次いで上型53を矢印Ｂ方向に開
くことによって成形品54を上型53に付着させて取り出す
ことを可能にしているのである。For this reason, conventionally, at this folded-back portion, as shown in FIG. 5, a lower die 52 for molding the outer surface of the bumper is divided, and an undercut process is performed on the molding die in which a punching die 51 is provided at the folded-back portion. When opening the mold after completion of the bumper 54 molding, first, the punching die 51 is pulled out in the direction of arrow A in the figure so that the undercut portion 58 of the molded product (bumper) 54 does not interfere with the punching die 51, and then the upper die. By opening 53 in the direction of arrow B, the molded product 54 can be attached to the upper mold 53 and taken out.
しかし、第５図のように成形型を分割した場合、型51と
52との合わせ面がバンパー54の外側面に来ることになる
ため、製品のバンパー54外側面に型の分割線（パーティ
ングライン）が転写されて残ることがあり、外観品質上
好ましくない。このため、型の分割線を製品の外観に現
われない部分に移して外観品質の向上と型開きの容易さ
とを同時に達成する成形型の分割方法が検討されてい
る。However, when the mold is divided as shown in FIG.
Since the mating surface with 52 comes to the outer surface of the bumper 54, a parting line of the mold may be transferred and left on the outer surface of the bumper 54 of the product, which is not preferable in terms of appearance quality. For this reason, a method for dividing a molding die has been studied in which the dividing line of the die is moved to a portion that does not appear in the appearance of the product to simultaneously improve the appearance quality and easily open the die.
この種の分割型の例としては実開昭63−132721号公報に
記載されたバンパー成形型がある。An example of this type of split mold is the bumper mold described in Japanese Utility Model Publication No. 63-132721.
第４図は同公報に記載のバンパー成形型を示しており、
バンパー外面を成形する下型42は折り返し部48まで一体
に作られており、上型43との分割面は製品外観に影響を
与えない折り返し部外面に位置するようにされている。
また上型43はバンパー内面を成形する可動コア型44を備
え、可動コア型44のバンパー折り返し部内面を成形する
成形部45は油圧シリンダ46により可動コア型44の内側方
向に移動可能となっている。また成形部45のバンパー折
り返し部内面端部を成形する部分には製品の係止用凹凸
47が設けられている。FIG. 4 shows a bumper molding die described in the publication.
The lower die 42 for molding the outer surface of the bumper is integrally formed up to the folded-back portion 48, and the split surface with the upper die 43 is located on the outer surface of the folded-back portion that does not affect the appearance of the product.
Further, the upper mold 43 is provided with a movable core mold 44 that molds the inner surface of the bumper, and the molding part 45 that molds the inner surface of the bumper folded portion of the movable core mold 44 can be moved inward of the movable core mold 44 by the hydraulic cylinder 46. There is. In addition, the concave and convex portions for locking the product are formed in the portion where the inner end of the bumper turnback portion of the forming portion 45 is formed.
47 are provided.
下型42と可動コア型44、成形部45と上型43とは第４図に
斜線で示す状態に組合わされ、成形部45は油圧シリンダ
46のロッド46aにより定位置に固定される。この状態で
樹脂の注型を行ない、型内で硬化させ、製品のバンパー
40を得る。製品40を取り出す際には、まず油圧シリンダ
46を作動させ、折り返し部分の成形部45を可動コア型44
の内部方向に移動させる。このとき、製品40の折り返し
端には成形部45の係止用凹凸部に対応した凹凸が形成さ
れているため、製品40の折り返し部は成形部45の移動と
共に可動コア型44内に引き込まれ、最終的には図に鎖線
で示したように湾曲する。The lower mold 42 and the movable core mold 44, and the molding part 45 and the upper mold 43 are combined in a state shown by hatching in FIG.
It is fixed in place by a rod 46a of 46. In this state, the resin is cast, and the resin is cured in the mold, and the product bumper
Get 40. When removing product 40, first
46 to activate the molded part 45 of the folded-back portion to move the movable core mold 44.
Move inward. At this time, since the concave and convex portions corresponding to the locking concave and convex portions of the molding portion 45 are formed at the folded end of the product 40, the folded portion of the product 40 is drawn into the movable core mold 44 as the molding portion 45 moves. , Finally, it bends as shown by the chain line in the figure.
これにより製品40のアンダーカット部48の逃げが完了
し、上型43を製品と干渉することなく矢印Ａの方向に開
くことが可能となる。この方法によれば、成形型の分割
線を製品40の外観に影響を与えない位置に設け、しかも
型開きを簡単に行なうことができる。As a result, the escape of the undercut portion 48 of the product 40 is completed, and the upper mold 43 can be opened in the direction of arrow A without interfering with the product. According to this method, the dividing line of the molding die can be provided at a position that does not affect the appearance of the product 40, and the mold can be easily opened.
実開昭63−132721号公報に記載のバンパー成形型では、
型開きの際製品40は可動コア型44に付着した状態で取り
出されるが、可動コア型44からの脱型のためには、第４
図の上型43と可動コア型44とを油圧シリンダ49により離
間させ、製品40折り返し部に形成された凹凸部を、成形
部45の凹凸部47から外す必要がある。この作業は人手に
よって行なうしかなく成形工程上のネックとなってい
た。特に射出成形法でバンパーを製作する場合、成形に
要するサイクルタイムが比較的短いため成形後の製品の
脱型に要する時間が工程に与える影響は大きく、成形後
の製品脱型を人手を介さずに短時間で行なえる成形型の
開発が望まれていた。In the bumper molding die described in Japanese Utility Model Publication No. 63-132721,
When the mold is opened, the product 40 is taken out while being attached to the movable core mold 44.
It is necessary to separate the upper die 43 and the movable core die 44 from each other by the hydraulic cylinder 49 so that the uneven portion formed on the folded portion of the product 40 is removed from the uneven portion 47 of the molding portion 45. This work had to be done manually, which was a bottleneck in the molding process. Especially when the bumper is manufactured by the injection molding method, the cycle time required for molding is relatively short, and the time required for demolding the product after molding has a large effect on the process. It was desired to develop a mold that can be done in a short time.
本考案は、上記問題に鑑み、製品のバンパー外観に影響
を与えない位置で分割を行ない、しかも型開きと成形後
の製品の脱型とを人手を介さずに短時間で行なうことが
できるバンパー成形型を提供することを目的としてい
る。In view of the above problems, the present invention is a bumper that divides at a position that does not affect the appearance of the bumper of the product, and that can perform mold opening and demolding of the product after molding in a short time without human intervention. The purpose is to provide a mold.
本考案によるバンパー成形型は、成形完了後の型開きの
際に製品の折り曲げ部を可動型内部に引き込んでアンダ
ーカット部の逃げを行なうと共に、型開き完了後には製
品を可動型から離脱させる強制抜き型を備えたことを特
徴としている。すなわち、本考案によれば、端部に折り
返し部を有する自動車用バンパー成形型であって、バン
パー外面と前記折り返し部外面の一部とを成形する成形
面を有する固定型と、前記折り返し部外面の残りの部分
を成形する成形面を有する強制抜き型と、バンパー内面
を成形する成形面を有する可動型と、前記折り返し部内
面とそれに続くバンパー内面の一部を成形する内部スラ
イド型とを備え、 前記強制抜き型は、前記成形面にバンパーの前記折り返
し部係止用の凹凸を有し、前記内部スライド型と前記強
制抜き型とは前記可動型中央方向に向け、同期して移動
可能であり、更に前記強制抜き型は、前記可動型と前記
内部スライド型とに対して前記可動型外部方向へ向けて
単独でも移動できるようにしたことを特徴とするバンパ
ー成形型が提供される。The bumper molding die according to the present invention pulls the bent portion of the product into the movable mold to escape the undercut portion when the mold is opened after the molding is completed, and the product is detached from the movable mold after the mold opening is completed. It features a cutting die. That is, according to the present invention, there is provided a bumper molding die for an automobile having a folded-back portion at an end thereof, the fixed die having a molding surface for molding the bumper outer surface and a part of the folded-back outer surface, and the folded-back outer surface. A forced die having a molding surface for molding the remaining portion, a movable die having a molding surface for molding the inner surface of the bumper, and an internal slide die for molding the inner surface of the folded portion and a part of the inner surface of the bumper subsequent thereto. The forced die has an unevenness for locking the folded-back portion of the bumper on the molding surface, and the internal slide die and the forced die are movable toward the center of the movable die in synchronization. Further, there is provided a bumper molding die characterized in that the forced removal die is configured so that it can be independently moved toward the outside of the movable die with respect to the movable die and the inner slide die. To be done.
樹脂が型内で硬化して成形が完了すると製品の折り返し
部内面を成形する内部スライド型と、同じく外面を成形
する強制抜き型とは製品の折り返し部を間に把持したま
ま可動型内部に向けて移動する。これにより製品の折り
返し部は可動型内部に引き込まれ、製品と固定型との干
渉を生じることなく、可動型に製品を付着させたまま型
を開くことができる。When the resin cures in the mold and the molding is completed, the internal slide mold that molds the inner surface of the product turnover part and the forced pulling mold that also molds the outer surface of the product are directed toward the inside of the movable mold while holding the product turnover part in between. To move. As a result, the folded portion of the product is drawn into the movable mold, and the product can be opened with the product attached to the movable mold without causing interference between the product and the fixed mold.
次に強制抜き型を内部スライド型に対して可動型の外側
方向に向けて移動させる。製品折り返し部は強制抜き型
の成形面の凹凸により係止されているため、強制抜き型
と共に可動型の外側方向に曲げられ、前記係止用凹凸部
から外れて脱型が行なわれる。Next, the forced die is moved toward the outer side of the movable die with respect to the inner slide die. Since the product turn-back portion is locked by the unevenness of the molding surface of the forced-drawing die, it is bent in the outward direction of the movable die together with the forced-drawing die, and is released from the locking concave-convex portion and released from the die.
第１図に本考案によるバンパー成形型の実施例を示す。
図はバンパーの折り返し部分の成形型をバンパー長手方
向に沿った断面で示しており、本実施例では固定型３は
バンパー10の外面21を成形し、可動型２はバンパー10内
面22を成形する。また、バンパー10端部の折り返し部８
の成形は内部スライド型４と強制抜き型５により行なわ
れる。可動型２と内部スライド型４、強制抜き型５とは
共通の基盤12上に設けられ、内部スライド型４と強制抜
き型５とは、それぞれ油圧シリンダ14,15により基盤12
上を滑動するようにされている。前記内部スライド型４
はバンパー折り返し部８の内面全体とそれに続くバンパ
ー内面の一部を成形する成形面を有しており、バンパー
成形時には第１図に示す位置で可動型２と組み合わせら
れてバンパー内面成形型を形成する。また、強制抜き型
５はバンパー折り返し部８の外面末端側を成形する成形
面を有し、バンパー成形時には固定型３と組み合わせて
バンパー外面成形型を形成する。強制抜き型５の上記成
形面には係止用凹凸部16が形成されており、バンパー10
成形後折り返し部分８を強制抜き型５の成形面に係止す
るようにされている。FIG. 1 shows an embodiment of a bumper molding die according to the present invention.
The drawing shows the mold for the folded-back portion of the bumper in a section along the bumper longitudinal direction. In this embodiment, the fixed mold 3 molds the outer surface 21 of the bumper 10 and the movable mold 2 molds the inner surface 22 of the bumper 10. . Also, the folded-back portion 8 at the end of the bumper 10
Is formed by the inner slide die 4 and the forced die 5. The movable mold 2, the internal slide mold 4, and the forced removal mold 5 are provided on a common base 12, and the internal slide mold 4 and the forced removal mold 5 are connected to the base 12 by hydraulic cylinders 14 and 15, respectively.
It is designed to slide over. The internal slide type 4
Has a molding surface for molding the entire inner surface of the bumper folded-back portion 8 and a part of the inner surface of the bumper following it. When the bumper is molded, it is combined with the movable mold 2 at the position shown in FIG. 1 to form a bumper inner surface molding die. To do. Further, the forced punching die 5 has a molding surface for molding the outer surface end side of the bumper folded-back portion 8, and is combined with the fixed die 3 to form a bumper outer surface molding die at the time of bumper molding. On the molding surface of the forced die 5 is formed an engaging concave-convex portion 16, which is used for the bumper 10
After molding, the folded-back portion 8 is adapted to be locked to the molding surface of the forcible die 5.
本実施例においては、固定型３の成形面は、折り返し部
８の外面まで延長されており、固定型３と強制抜き型５
との分割線はバンパーの折り返し部分に来ており、バン
パー外観に影響を与えないようにされている。ところが
このように固定型３と強制抜き型５とを組合わせたた
め、折り返し部８の基部が固定型３と干渉してこのまま
では可動型２、内部スライド型４、強制抜き型５とを一
体に矢印Ａの方向へ開くことができなくなり、いわゆる
アンダーカットが生じている。In the present embodiment, the molding surface of the fixed mold 3 extends to the outer surface of the folded-back portion 8, and the fixed mold 3 and the forced removal mold 5
The dividing line between and is at the folded back part of the bumper so that it does not affect the appearance of the bumper. However, since the fixed die 3 and the forced die 5 are combined in this way, the base of the folded portion 8 interferes with the fixed die 3 and the movable die 2, the inner slide die 4, and the forced die 5 are integrated as they are. It becomes impossible to open in the direction of arrow A, and so-called undercut occurs.
本実施例では、上記アンダーカットを解決するため第１
図で樹脂の硬化が完了した状態から内部スライド型４と
強制抜き型５とを同時に第２図の位置に移動させてい
る。In this embodiment, in order to solve the above undercut, the first
In the figure, the internal slide die 4 and the forcible die 5 are simultaneously moved to the position shown in FIG. 2 from the state where the curing of the resin is completed.
すなわち、第２図のように、油圧シリンダ14,15を用い
て内部スライド型４と強制抜き型５とを可動型２の内部
方向に向けてスライドさせることにより、製品のバンパ
ー10を固定型３と内部スライド型４との分割線17近傍で
湾曲させ、可動型２内部に引き込んで折り曲げることに
より、前述のアンダーカットは解消され、固定型３との
干渉なしに、可動型２にバンパー10を付着させたまま矢
印Ａの方向に型を開くことが可能になるのである。That is, as shown in FIG. 2, by sliding the inner slide die 4 and the forced removal die 5 toward the inside of the movable die 2 using the hydraulic cylinders 14 and 15, the bumper 10 of the product is fixed. The undercut described above is eliminated by curving in the vicinity of the dividing line 17 between the inner slide die 4 and the inner slide die 4, and by pulling it inside the movable die 2 and bending it, the bumper 10 is attached to the movable die 2 without interference with the fixed die 3. It is possible to open the mold in the direction of arrow A with the adhesive attached.
しかし、この状態ではバンパーの折り返し部８は内部ス
ライド型４と強制抜き型５との間に固定されているため
バンパー10を可動型２から取り外すことはできない。However, in this state, the folded-back portion 8 of the bumper is fixed between the internal slide die 4 and the forced removal die 5, so that the bumper 10 cannot be removed from the movable die 2.
そこで、次に固定型２からの分離完了後再度油圧シリン
ダ14,15を作動させて内部スライド型４と強制抜き型５
とを可動型４の外側方向に向けて移動させる。このとき
内部スライド型４は、元の位置に復帰すると可動型２と
係合し、それ以上移動しないが強制抜き型５は元の位置
を越えて更に可動型２の外に移動することができる。バ
ンパー10の折り返し部８は凹凸部16により強制抜き型５
に係止されているため、折り返し部８は強制抜き型５と
共に移動し、バンパー10全体は第２図とは逆の方向に湾
曲して可動型２から剥離する。また、バンパー10が湾曲
することにより折り返し部８には強制抜き型５から離反
する方向に引く力が働き、第３図に示すように係止凹凸
部16でバンパー10と強制抜き型５とが分離し、バンパー
10の脱型が完了する。Therefore, next, after the completion of separation from the fixed mold 2, the hydraulic cylinders 14 and 15 are operated again to make the inner slide mold 4 and the forced removal mold 5
And are moved toward the outer side of the movable mold 4. At this time, when the internal slide die 4 returns to the original position, the internal slide die 4 engages with the movable die 2 and does not move any more, but the forced removal die 5 can move beyond the original position to the outside of the movable die 2. . The folded-back part 8 of the bumper 10 is the forced-drawing die 5 due to the uneven part 16.
Since the folded-back portion 8 moves together with the forced removal die 5, the entire bumper 10 bends in the direction opposite to that shown in FIG. Further, due to the bending of the bumper 10, a pulling force acts on the folded-back portion 8 in a direction away from the forced-drawing die 5, and as shown in FIG. Isolated and bumper
Demolding of 10 is completed.
上述の説明からわかるように、本考案のバンパー成形型
においては、成形完了後の型開きの際のアンダーカット
処理と、型開き後の製品の脱型は全て油圧シリンダ14,1
5の作動により人手を介することなく迅速に行なうこと
ができる。As can be seen from the above description, in the bumper molding die of the present invention, the undercut processing at the time of mold opening after completion of molding and the demolding of the product after mold opening are all performed by the hydraulic cylinders 14,1.
By the operation of 5, it can be carried out quickly without human intervention.
上述のように可動型と内部スライド型、強制抜き型を相
互に移動させるようにしたことにより、アンダーカット
部の処理と製品の脱型とを人手を介することなく迅速に
行なうことができるため、射出成形等のサイクルタイム
を短縮して生産性向上が可能となる。Since the movable die, the internal slide die, and the forced die die are moved relative to each other as described above, the processing of the undercut portion and the demolding of the product can be quickly performed without human intervention. It is possible to improve productivity by shortening the cycle time such as injection molding.
第１図は本考案によるバンパー成形型の実施例の断面
図、 第２図は同上実施例における型開きの際の各部分の配置
を示す断面図、 第３図は同上実施例における製品を脱型する際の各部分
の配置を示す断面図、第４図及び第５図は従来技術によ
るバンパー成形型を示す断面図である。 ２……可動型、３……固定型、４……内部スライド型、
５……強制抜き型、８……折り返し部、10……バンパ
ー、12……基盤、14,15……油圧シリンダ、16……凹凸
部。FIG. 1 is a sectional view of an embodiment of a bumper molding die according to the present invention, FIG. 2 is a sectional view showing the arrangement of each part when the mold is opened in the same embodiment, and FIG. FIG. 4 is a sectional view showing the arrangement of each part when molding, and FIG. 4 and FIG. 5 are sectional views showing a bumper molding die according to the prior art. 2 ... Movable type, 3 ... Fixed type, 4 ... Internal slide type,
5: Forced removal type, 8 ... Folding part, 10 ... Bumper, 12 ... Base, 14,15 ... Hydraulic cylinder, 16 ... Concavo-convex part.
Claims (1)
ー成形型であって、バンパー外面と前記折り返し部外面
の一部とを成形する成形面を有する固定型と、前記折り
返し部外面の残りの部分を成形する成形面を有する強制
抜き型と、バンパー内面を成形する成形面を有する可動
型と、前記折り返し部内面とそれに続くバンパー内面の
一部を成形する内部スライド型とを備え、 前記強制抜き型は、前記成形面にバンパーの前記折り返
し部係止用の凹凸を有し、前記内部スライド型と前記強
制抜き型とは前記可動型中央方向に向け、同期して移動
可能であり、更に前記強制抜き型は、前記可動型と前記
内部スライド型とに対して前記可動型外部方向へ向けて
単独でも移動できるようにしたことを特徴とするバンパ
ー成形型。1. A bumper molding die for an automobile having a folded-back portion at an end thereof, wherein a fixed die having a molding surface for molding the outer surface of the bumper and a part of the outer surface of the folded-back portion, and the remaining portion of the outer surface of the folded-back portion. A forced die having a forming surface for forming a portion, a movable die having a forming surface for forming an inner surface of the bumper, an internal slide die for forming a part of the inner surface of the folded portion and the bumper inner surface, The punching die has unevenness for locking the folded-back portion of the bumper on the molding surface, and the internal slide die and the forced punching die are directed toward the center of the movable die, and are movable in synchronization. The bumper molding die is characterized in that the forced removal die is configured so as to be movable independently of the movable die and the inner slide die toward the outside of the movable die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2619790U JPH0719772Y2 (en) | 1990-03-16 | 1990-03-16 | Bumper mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2619790U JPH0719772Y2 (en) | 1990-03-16 | 1990-03-16 | Bumper mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03116907U JPH03116907U (en) | 1991-12-03 |
| JPH0719772Y2 true JPH0719772Y2 (en) | 1995-05-10 |
Family
ID=31529103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2619790U Expired - Lifetime JPH0719772Y2 (en) | 1990-03-16 | 1990-03-16 | Bumper mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719772Y2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4825509B2 (en) * | 2005-12-15 | 2011-11-30 | 三菱自動車工業株式会社 | Molding method of resin parts |
| BRPI0622017A2 (en) | 2006-11-08 | 2011-12-20 | Michelin Rech Et Techinique S A | method for automatically demolding a curved tread, automated device for removing a cured tread from a mold and mold for a tread |
| WO2010002390A1 (en) | 2008-06-30 | 2010-01-07 | Michelin Recherche Et Technique S.A. | Tread band demolding tool |
| AU2013376988A1 (en) | 2013-01-31 | 2015-08-13 | Compagnie Generale Des Etablissements Michelin | Methods and apparatus for demolding tire treads |
| JP7398263B2 (en) * | 2019-12-18 | 2023-12-14 | 株式会社Subaru | injection mold |
| CN115139472B (en) * | 2022-09-01 | 2022-12-23 | 宁波兴利汽车模具有限公司 | Pitched roof demolding mechanism for demolding automobile parts |
-
1990
- 1990-03-16 JP JP2619790U patent/JPH0719772Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03116907U (en) | 1991-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |