JPH052871B2 - - Google Patents
Info
- Publication number
- JPH052871B2 JPH052871B2 JP60002415A JP241585A JPH052871B2 JP H052871 B2 JPH052871 B2 JP H052871B2 JP 60002415 A JP60002415 A JP 60002415A JP 241585 A JP241585 A JP 241585A JP H052871 B2 JPH052871 B2 JP H052871B2
- Authority
- JP
- Japan
- Prior art keywords
- fixing ring
- blow molding
- boot
- bellows
- 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
- 238000000071 blow moulding Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010102 injection blow moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/041—Non-metallic bellows
- F16J3/042—Fastening details
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
- B29C49/061—Injection blow-moulding with parison holding means displaceable between injection and blow stations
- B29C49/062—Injection blow-moulding with parison holding means displaceable between injection and blow stations following an arcuate path, e.g. rotary or oscillating-type
- B29C49/063—Injection blow-moulding with parison holding means displaceable between injection and blow stations following an arcuate path, e.g. rotary or oscillating-type with the parison axis held in the plane of rotation
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/703—Bellows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Devices (AREA)
- Pivots And Pivotal Connections (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野］
本発明は、熱可塑性樹脂でブロー成形され、蛇
腹部の少なくとも一端に装着軸に形成された係合
溝に嵌着される固定リング部を備えた樹脂製防塵
ブーツの製造方法に関し、特に前記固定リング部
が小径側のものである場合に、好適なものであ
る。Detailed Description of the Invention <Industrial Application Fields> The present invention provides a fixing ring portion that is blow-molded from a thermoplastic resin and that is fitted into an engagement groove formed on a mounting shaft at at least one end of a bellows portion. Regarding the method of manufacturing the resin dust-proof boot provided with the present invention, it is particularly suitable when the fixing ring portion has a small diameter side.
ここで、防塵ブーツとしては、ボールジヨイン
ト用のダストカバー、自動車に用いられるステア
リングラツクブーツ、等速ジヨイントブーツ等が
含まれる。 Here, the dustproof boots include dust covers for ball joints, steering rack boots used in automobiles, constant velocity joint boots, and the like.
＜従来の技術＞
ここでは、第３図に示すようなラツクブーツを
例に採り説明する。この種のブーツは、従来クロ
ロプレンゴム（CR）等のゴム製のものがほとん
どであつたが、主として加工成形性及び耐寒性向
上の見地から熱可塑性樹脂で成形することが検討
され、一部実用化されつつある。このブーツの成
形は、ブロー成形（特に射出ブロー成形）で製造
されている。<Prior Art> Here, explanation will be given by taking a rack boot as shown in FIG. 3 as an example. Most of these types of boots have conventionally been made of rubber such as chloroprene rubber (CR), but molding them from thermoplastic resin has been considered mainly from the standpoint of improving processability and cold resistance, and some have been put into practical use. It is becoming more and more popular. The boot is manufactured by blow molding (particularly injection blow molding).
＜発明が解決しようとする問題点＞
ブロー成形でブーツを成形した場合、固定リン
グ部の蛇腹部連接側がブロー成形時、蛇腹部側へ
引つ張られる。このため、第４図に示すようにブ
ーツにおける固定リング部１の内周元部立壁２を
略直角状に即ちシヤープに形成することは困難で
ある。特に、小径側の固定リング部ではサイズが
小さいためその傾向が著しい。固定リング部１の
内周元部立壁２がシヤープに形成されていない
と、装着軸３の係合溝５に嵌着させたとき、係合
溝の係止壁５ａに対する係止作用が小さく、抜け
やすい。このため、第５図に示すように、抜け止
めつば部７ａを備えたゴム製グロメツト７を介在
させて対処していた。しかし、十分な抜け止め性
を得難いとともに、ゴム製グロメツトを使用する
ため、取付け作業工数が全体として増大するとと
もに、スナツプ的嵌着感−係合溝への嵌着確認が
容易となる−を得がたい。<Problems to be Solved by the Invention> When a boot is formed by blow molding, the side of the fixing ring portion that connects to the bellows portion is pulled toward the bellows portion side during blow molding. For this reason, as shown in FIG. 4, it is difficult to form the inner circumferential proximal vertical wall 2 of the fixing ring portion 1 in the boot substantially at right angles, that is, sharply. This tendency is particularly noticeable in the fixing ring portion on the small diameter side due to its small size. If the standing wall 2 of the inner circumferential base of the fixed ring part 1 is not formed sharply, when it is fitted into the engagement groove 5 of the mounting shaft 3, the engagement groove has a small locking effect on the locking wall 5a, and it is easy to come off. . For this reason, as shown in FIG. 5, a rubber grommet 7 provided with a retaining collar 7a has been used to deal with this problem. However, it is difficult to obtain sufficient retaining properties, and since a rubber grommet is used, the overall installation work time increases, and it is difficult to obtain a snap-like fitting feeling, which makes it easy to confirm that the fitting is fitted into the engagement groove. .
＜問題点を解決するための手段＞
本発明は、蛇腹部の少なくとも一端に装着軸に
形成される係合溝に嵌着される固定リング部を備
え、この固定リング部の内周元部立壁が略直立に
形成されるとともに、固定リング部の内周元部立
壁と蛇腹部とが装着軸に遊嵌可能な内径を備えた
スリーブ部で連接されている樹脂製防塵ブーツを
製造するに際して、予めパリソン成形時に又はブ
ロー成形の型締め時に固定リング部とスリーブ部
を型形成するとともに、この固定リング及びスリ
ーブ部を型間で挟持した状態でブロー成形を行な
つて樹脂製防塵ブーツを製造する方法にある。<Means for Solving the Problems> The present invention includes a fixing ring part that is fitted into an engagement groove formed in the mounting shaft at least one end of the bellows part, and the inner circumference of the fixing ring part has an approximately When manufacturing a resin dust-proof boot that is formed upright and in which the inner circumferential proximal standing wall of the fixed ring part and the bellows part are connected by a sleeve part with an inner diameter that can be loosely fitted to the mounting shaft, it is necessary to Alternatively, there is a method of manufacturing a resin dustproof boot by forming a fixing ring part and a sleeve part in a mold when the mold is clamped during blow molding, and performing blow molding with the fixing ring part and sleeve part sandwiched between the molds.
＜実施例＞
以下、本発明を、図例に基づいて、さらに詳細
に説明する。<Example> Hereinafter, the present invention will be described in more detail based on illustrated examples.
第１図に示すように、ラツクブーツの小径側の
固定リング部１の内周元部がシヤープに形成され
ているとともに、固定リング部１と蛇腹部９とが
装着軸（ジヨイント軸）３が遊嵌可能な内径を備
えたスリーブ部１１で連接されている。従来と同
様、この固定リング部１の内径は、ジヨイント軸
３の係合溝５周面に密接するように溝部の軸径と
同一又は若干小さめである。また、固定リング部
１の長さは、ジヨイント軸の係合溝５に遊嵌でき
るように、溝幅より小さめである。ここで、固定
リング部１の元部内周立壁２が略直立に形成され
ている。ここで略直立とは、第１図における角度
θが70〜110゜の状態を言う。 As shown in Fig. 1, the inner peripheral base of the fixing ring part 1 on the small diameter side of the rack boot is formed into a sharp shape, and the mounting shaft (joint shaft) 3 can be fitted loosely between the fixing ring part 1 and the bellows part 9. They are connected by a sleeve portion 11 having a large inner diameter. As in the conventional case, the inner diameter of the fixing ring portion 1 is the same as or slightly smaller than the shaft diameter of the groove so as to be in close contact with the circumferential surface of the engagement groove 5 of the joint shaft 3. Further, the length of the fixing ring portion 1 is smaller than the groove width so that it can be loosely fitted into the engagement groove 5 of the joint shaft. Here, the base inner circumferential vertical wall 2 of the fixed ring portion 1 is formed substantially upright. Here, "substantially upright" refers to a state where the angle θ in FIG. 1 is 70 to 110 degrees.
次に、上記構成のブーツを、射出ブロー成形に
より製造する場合を説明する（第６図参照）。押
出ブロー成形でも同様にして製造できる。 Next, a case will be described in which the boot having the above configuration is manufactured by injection blow molding (see FIG. 6). It can also be produced in the same manner by extrusion blow molding.
(1) 射出ステージで、マンドレル（コア金型）１
３をキヤビテイ金型１５で囲繞して、即ち型閉
じして有底パリソン１７を射出成形する。この
とき、第２図に示すように、固定リング部１及
びスリーブ部１１は最終形状に成形され、固定
リング部１の内周元部立壁２が略直立に形成さ
れる。(1) At the injection stage, mandrel (core mold) 1
3 is surrounded by a cavity mold 15, that is, the mold is closed, and a bottomed parison 17 is injection molded. At this time, as shown in FIG. 2, the fixed ring part 1 and the sleeve part 11 are molded into the final shape, and the inner circumferential root wall 2 of the fixed ring part 1 is formed substantially upright.
(2) 上記有底パリソン１７は、マンドレル１３に
支持されて、ブロー成形ステージへ移送され、
ブロー金型１９でマンドレル１３を囲繞して、
即ち型閉じしてブローを行なう。このとき、従
来と同様、第２図に示すように有底パリソン１
７が変形して成形される蛇腹部９には引つ張り
作用が発生するが、固定リング部１の内周元部
壁２と蛇腹部９との間にはスリーブ部１１が介
在し、しかもマンドレル１３とブロー金型１９
とで固定リング部１及び蛇腹部９が挟持（挟持
距離ｌは2.5mm以上とする）されているので、
固定リング部１の前記シヤープに形成された内
周元部立壁２が変形するようなことはない。(2) The bottomed parison 17 is supported by the mandrel 13 and transferred to the blow molding stage,
Surrounding the mandrel 13 with a blow mold 19,
That is, the mold is closed and blowing is performed. At this time, as in the conventional case, as shown in FIG.
A tensioning action occurs on the bellows part 9 which is formed by deforming the bellows part 7. However, a sleeve part 11 is interposed between the inner peripheral base wall 2 of the fixing ring part 1 and the bellows part 9, and the mandrel 13 and blow mold 19
Since the fixing ring part 1 and the bellows part 9 are clamped (the clamping distance l is 2.5 mm or more),
The inner periphery base vertical wall 2 formed at the sharp portion of the fixed ring portion 1 will not be deformed.
(3) 続いて、型開き後、成形品２１はマンドレル
１３に支持されて排出ステージへ移送され、エ
ア等の手段で完全に離型される。この成形品
は、第２図の二点鎖線Ｃで示す位置で切断して
ブーツ２３を得る。(3) Subsequently, after opening the mold, the molded product 21 is supported by the mandrel 13 and transferred to the discharge stage, where it is completely released from the mold by means such as air. This molded product is cut at the position shown by the two-dot chain line C in FIG. 2 to obtain the boot 23.
尚、このブーツは、押出ブローによつても成
形することができるが、この場合は、ブロー成
形時の型締め時に固定リング部５とスリーブ部
１１とを圧縮成形時に型成形する。 Note that this boot can also be molded by extrusion blowing, but in this case, the fixing ring portion 5 and sleeve portion 11 are molded during compression molding during mold clamping during blow molding.
こうして、得た前記構成のブーツの使用態様は
次の如くである。 The manner of use of the boots thus obtained having the above structure is as follows.
第３図に示すように、ブーツ２３を、従来のブ
ーツと同様に小径側の固定リング部１をジヨイン
ト軸３の係合溝５に嵌着し、大径側の固定リング
部１０をラツクハウジング２５の首部の係合溝に
嵌着させクリツプリング２７で固定する。このと
き、小径側の固定リング部１は上記の如く、その
内周元部立壁２が略直立に形成されているので、
係合溝５に確実に係止する。また、ジヨイント軸
揺動時、蛇腹部９の屈曲運動は、スリーブ部１１
がジヨイント軸３に遊嵌していることにより吸収
され、直接的に固定リング部に伝達されない。な
お、２９はボールジヨイントである。 As shown in FIG. 3, in the boot 23, the fixing ring part 1 on the small diameter side is fitted into the engagement groove 5 of the joint shaft 3, and the fixing ring part 10 on the large diameter side is attached to the rack housing. 25 and fixed with a clip ring 27. At this time, the fixed ring part 1 on the small diameter side is formed with its inner circumferential base vertical wall 2 substantially upright, as described above.
Reliably locks into the engagement groove 5. Furthermore, when the joint shaft swings, the bending motion of the bellows portion 9 is caused by the sleeve portion 11
is absorbed by the loose fit in the joint shaft 3, and is not directly transmitted to the fixing ring portion. Note that 29 is a ball joint.
＜発明の効果＞
本発明の樹脂製防塵ブーツの製造方法は、上記
のような構成なので、下記のような効果を奏す
る。<Effects of the Invention> Since the method for manufacturing resin dustproof boots of the present invention has the above-described configuration, it produces the following effects.
ブロー成形時、固定リング部及びスリーブ部を
金型で保持してブローを行なうため、固定リング
部が蛇腹部の引つ張り作用をほとんど受けず、容
易に固定リング部の内周元部立壁をシヤープな形
状に維持可能である。従つて、固定リング部内周
元部立壁が略直角状とされた樹脂製ブーツを生産
性良好に製造可能となる。 During blow molding, the fixed ring part and the sleeve part are held in the mold and blowing is performed, so the fixed ring part is hardly subjected to the tensile action of the bellows part, and it is easy to sharpen the vertical wall at the inner circumference of the fixed ring part. Can be maintained in shape. Therefore, it is possible to manufacture a resin boot with a substantially right-angled vertical wall on the inner circumference of the fixing ring portion with good productivity.
第１図は本発明のブーツの装着態様を示す要部
半断面図、第２図は同じくブロー成形時を示す要
部半断面図、第３図は同じく装着態様を示す全体
断面図、第４図は従来のブーツの装着態様を示す
要部半断面図、第５図は第４図においてゴム製グ
ロメツトを固定リング部の内周に介在させた要部
半断面図、第６図は射出ブロー成形の概略工程図
である。
１…固定リング部（小径側）、２…内周元部立
壁、３…装着軸（ジヨイント軸）、５…係合溝、
９…蛇腹部、１１…スリーブ部、１３…マンドレ
ル、１５…キヤビテイ金型、１７…有底パリソ
ン、１９…ブロー金型、２１…成形品、２３…ブ
ーツ。
FIG. 1 is a half-sectional view of the main part showing how the boot of the present invention is worn, FIG. 2 is a half-sectional view of the main part when blow molding, FIG. The figure is a half-sectional view of the main part showing how a conventional boot is installed, FIG. It is a schematic process diagram of molding. 1...Fixing ring part (small diameter side), 2...Inner peripheral base vertical wall, 3...Mounting shaft (joint shaft), 5...Engagement groove,
9... Bellows part, 11... Sleeve part, 13... Mandrel, 15... Cavity mold, 17... Bottomed parison, 19... Blow mold, 21... Molded product, 23... Boot.
Claims (1)
れた係合溝に嵌着される固定リング部を備え、該
固定リング部の内周元部立壁が略直立に形成され
るとともに、前記固定リング部の内周元部立壁と
前記蛇腹部とが前記装着軸が遊嵌可能な内径を備
えたスリーブ部で連接されている樹脂製ブーツを
熱可塑性樹脂でブロー成形により製造するに際し
て、 予めパリソン成形時に又はブロー成形の型締め
時に前記固定リング部とスリーブ部を型成形する
とともに、前記固定リング部及び前記スリーブ部
を型間で挟持した状態でブロー成形を行なうこと
を特徴とする樹脂製防塵ブーツの製造方法。[Scope of Claims] 1. At least one end of the bellows portion is provided with a fixing ring portion that is fitted into an engagement groove formed in the mounting shaft, and the inner circumference of the fixing ring portion has an upright wall formed substantially upright; , when manufacturing a resin boot using a thermoplastic resin by blow molding, in which the inner peripheral proximal standing wall of the fixing ring part and the bellows part are connected by a sleeve part having an inner diameter that allows the mounting shaft to fit loosely thereinto, A product made of resin, characterized in that the fixing ring part and the sleeve part are molded during parison molding or when the mold is clamped during blow molding, and the blow molding is performed with the fixing ring part and the sleeve part being held between molds. How to make dustproof boots.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002415A JPS61160673A (en) | 1985-01-10 | 1985-01-10 | Resin made dustproof boots and manufacture thereof |
| CA000499103A CA1333181C (en) | 1985-01-10 | 1986-01-07 | Plastic boots and method of manufacturing the same |
| DE19863600444 DE3600444A1 (en) | 1985-01-10 | 1986-01-09 | PLASTIC SHOE AND METHOD FOR PRODUCING THE SAME |
| US07/091,353 US4852891A (en) | 1985-01-10 | 1987-08-31 | Plastic boots and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002415A JPS61160673A (en) | 1985-01-10 | 1985-01-10 | Resin made dustproof boots and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61160673A JPS61160673A (en) | 1986-07-21 |
| JPH052871B2 true JPH052871B2 (en) | 1993-01-13 |
Family
ID=11528614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60002415A Granted JPS61160673A (en) | 1985-01-10 | 1985-01-10 | Resin made dustproof boots and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61160673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006134768A1 (en) * | 2005-06-14 | 2006-12-21 | Nok Corporation | Mold for blow molding |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH061900Y2 (en) * | 1986-12-27 | 1994-01-19 | 豊田合成株式会社 | Resin rack boots |
| JPH0639138Y2 (en) * | 1987-09-24 | 1994-10-12 | リズム自動車部品製造株式会社 | Ball joint |
| WO2008032462A1 (en) * | 2006-09-15 | 2008-03-20 | Mitsubishi Electric Corporation | Actuator |
| JP5863552B2 (en) * | 2012-04-27 | 2016-02-16 | 株式会社ユタカ技研 | Thermo actuator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554650U (en) * | 1978-09-30 | 1980-04-12 | ||
| JPS57141225U (en) * | 1981-02-28 | 1982-09-04 |
-
1985
- 1985-01-10 JP JP60002415A patent/JPS61160673A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006134768A1 (en) * | 2005-06-14 | 2006-12-21 | Nok Corporation | Mold for blow molding |
| JPWO2006134768A1 (en) * | 2005-06-14 | 2009-01-08 | Nok株式会社 | Mold for blow molding |
| US7824174B2 (en) | 2005-06-14 | 2010-11-02 | Nok Corporation | Metal mold for blow molding |
| JP4683048B2 (en) * | 2005-06-14 | 2011-05-11 | Ｎｏｋ株式会社 | Mold for blow molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61160673A (en) | 1986-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |