JPH0441898B2 - - Google Patents
Info
- Publication number
- JPH0441898B2 JPH0441898B2 JP61123819A JP12381986A JPH0441898B2 JP H0441898 B2 JPH0441898 B2 JP H0441898B2 JP 61123819 A JP61123819 A JP 61123819A JP 12381986 A JP12381986 A JP 12381986A JP H0441898 B2 JPH0441898 B2 JP H0441898B2
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- extrusion head
- parison
- compression member
- distal end
- 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
Links
- 238000001125 extrusion Methods 0.000 claims description 25
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000000071 blow moulding Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- 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
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
-
- 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
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- 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
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
-
- 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
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- 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
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3032—Preforms or parisons made of several components having components being injected
-
- 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
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3041—Preforms or parisons made of several components having components being extruded
-
- 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
- B29C49/04—Extrusion blow-moulding
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、中空体のブロー成形装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a blow molding apparatus for hollow bodies.
従来の技術
従来のブロー成形装置は、型開き、型締め可能
にした分割金型と、分割金型間にパリスンを垂下
する押出頭と、型締めされて挾持されたパリスン
内に圧力流体を吹込む流体吹込み装置とからなつ
ており、押出頭より垂下された成形品の内側形状
を規制することができなかつた。BACKGROUND TECHNOLOGY Conventional blow molding equipment consists of a split mold that can be opened and clamped, an extrusion head that suspends a parison between the split molds, and a pressurized fluid that blows into the parison that is clamped and clamped. However, it was not possible to control the inner shape of the molded product suspended from the extrusion head.
発明が解決しようとする問題点
上記従来のブロー成形装置にあつては成形品の
内側形状を規制することができないため、内側面
に突起を必要とする容器の成形に適用することが
できなかつた。Problems to be Solved by the Invention The conventional blow molding apparatus described above cannot be applied to molding containers that require protrusions on the inner surface because it is not possible to control the inner shape of the molded product. .
問題点を解決するための手段
本発明は上記のことにかんがみなされたもの
で、内側面に突起を必要とする容器をもブロー成
形法にて安価に成形することができるようにした
中空体のブロー成形装置を提供しようとするもの
で、その構成は、パリスンを押出す押出頭と、こ
の押出頭の軸心部に摺動自在に設けたマンドレル
と、先端面が上記マンドレルの先端面に対向し、
かつマンドレルの軸心方向に移動可能に設けた圧
縮部材と、押出頭より突出動したマンドレル及び
圧縮部材の先端部を囲繞する位置に設けた分割金
型と、マンドレルの外周面に位置するパリスンの
内側に圧力流体を吹込む圧力吹込み手段とからな
り、上記マンドレルの外周面の所定の位置に凹条
部を設けた構成となつている。Means for Solving the Problems The present invention was conceived in view of the above-mentioned problems, and is a hollow body that enables containers that require protrusions on the inner surface to be formed at low cost by blow molding. The aim is to provide a blow molding device, which consists of an extrusion head for extruding parison, a mandrel slidably provided at the axial center of the extrusion head, and a tip end facing the tip end surface of the mandrel. death,
and a compression member movable in the axial direction of the mandrel, a split mold provided at a position surrounding the mandrel protruding from the extrusion head and the tip of the compression member, and a parison located on the outer peripheral surface of the mandrel. The mandrel is comprised of pressure blowing means for blowing pressure fluid into the inside, and has a grooved portion provided at a predetermined position on the outer circumferential surface of the mandrel.
作 用
押出頭から押出されたパリスンの先端部をマン
ドレルと圧縮部材で挾着し、ついで押出頭より溶
融樹脂を押出しながらマンドレルと圧縮部材を一
体に押出頭より突出する方向に移動してマンドレ
ルの外周面に沿つてパリスンを配置し、このパリ
スンを分割金型にはさんでからパリスンの内側か
ら圧力流体を吹込むことにより中空成形体が成形
される。そしてこのとき中空成形体の内面に上記
マンドレルの凹条部に対応する位置に突起が成形
される。Function: The tip of the parison extruded from the extrusion head is clamped between the mandrel and the compression member, and then, while extruding the molten resin from the extrusion head, the mandrel and compression member are moved together in the direction of protruding from the extrusion head, and the mandrel is A hollow molded body is formed by arranging a parison along the outer circumferential surface, sandwiching the parison between split molds, and then blowing pressure fluid into the parison from inside the parison. At this time, protrusions are formed on the inner surface of the hollow molded body at positions corresponding to the grooves of the mandrel.
実施例 本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described based on the drawings.
図中１は押出頭であり、この押出頭１は樹脂注
入口２を有するダイ３と、ダイ３の内側に位置
し、かつダイ３との間に上記樹脂注入口２に連通
する環状流路４を構成する筒状のコア５と、この
コア５の内側に摺動自在に嵌合したマンドレル６
とからなつている。上記環状流路４は下側が小径
となるテーパ状になつていて、その押出口７はダ
イ３の内側に向けられている。マンドレル６は上
記押出口７の上側より押出頭１の下方へ所定の長
さにわたつて往復動するようになつている。 In the figure, 1 is an extrusion head, and this extrusion head 1 includes a die 3 having a resin injection port 2, and an annular flow channel located inside the die 3 and communicating with the resin injection port 2 between the die 3 and the die 3. 4 and a mandrel 6 slidably fitted inside the core 5.
It is made up of. The annular flow path 4 has a tapered shape with a smaller diameter on the lower side, and its extrusion port 7 is directed toward the inside of the die 3. The mandrel 6 is configured to reciprocate from above the extrusion port 7 to below the extrusion head 1 over a predetermined length.
８はマンドレル６の下端面に対向して設けられ
た圧縮部材で、この圧縮部材８は上記マンドレル
６と同様に上下方向に往復動するようになつてい
る。 Reference numeral 8 denotes a compression member provided facing the lower end surface of the mandrel 6, and this compression member 8 is adapted to reciprocate in the vertical direction similarly to the mandrel 6 described above.
９，１０は押出頭１の下側に位置する左右の分
割金型であり、９ａ，１０ａはそのキヤビテイで
ある。この分割金型９，１０の上側のエツジ部径
はマンドレル６の外周径となつている。 9 and 10 are left and right split molds located below the extrusion head 1, and 9a and 10a are cavities thereof. The diameter of the upper edge portion of the split molds 9 and 10 is the outer circumferential diameter of the mandrel 6.
上記マンドレル６は第３図に示すようになつて
いて、その外面に凹条部６ａ，６ｂ，６ｃ，…が
設けてある。 The mandrel 6 is constructed as shown in FIG. 3, and grooves 6a, 6b, 6c, . . . are provided on its outer surface.
上記構成において、マンドレル６の下端部を押
出口７より上側に位置させた状態で押出口７より
溶融樹脂を押出す。このとき環状流路４は下側が
小径となるテーパ状になつており、さらに押出口
７がダイ３の内側に向いているので、押出口７よ
り押出されたパリスン１１はマンドレル６の中心
に向かつて押出され、その下端部を塞ぐようにパ
リスン１１が群らがり押出頭１の下端部を閉じる
（第１図）。 In the above configuration, the molten resin is extruded from the extrusion port 7 with the lower end of the mandrel 6 positioned above the extrusion port 7. At this time, the annular flow path 4 has a tapered shape with a smaller diameter on the lower side, and the extrusion port 7 faces inside the die 3, so the parison 11 extruded from the extrusion port 7 is directed toward the center of the mandrel 6. Once extruded, the parisons 11 crowd together to close the lower end of the extrusion head 1 (FIG. 1).
次に圧縮部材８を上昇させて、この圧縮部材８
の上端とマンドレル６の下端との間で上記パリス
ン１１の閉じ部分を圧縮する（第２図）。このと
きの圧縮肉厚が成形体の底部の肉厚に近い値とな
る。 Next, the compression member 8 is raised, and this compression member 8
The closed portion of the parison 11 is compressed between the upper end and the lower end of the mandrel 6 (FIG. 2). The compressed thickness at this time becomes a value close to the thickness of the bottom of the molded body.
次にマンドレル６と圧縮部材８とを一体に下降
させる（第３図）。このとき押出頭１への溶融樹
脂の供給量を制御して、上記マンドレル６と圧縮
部材８の下降速度に応じた溶融樹脂を押出口７よ
り押出してマンドレル６の下降と共にマンドレル
６の外周に沿つて形成されるパリスン１１の肉厚
が制御される。このときマンドレル６の各凹条部
６ａ，６ｂ，６ｃ，…にパリスン１１が入り込
み、この部分が局部的に肉厚となる。 Next, the mandrel 6 and the compression member 8 are lowered together (FIG. 3). At this time, the amount of molten resin supplied to the extrusion head 1 is controlled, and the molten resin is extruded from the extrusion port 7 in accordance with the descending speed of the mandrel 6 and the compression member 8, and as the mandrel 6 descends, it flows along the outer periphery of the mandrel 6. The thickness of the parison 11 thus formed is controlled. At this time, the parison 11 enters into each grooved portion 6a, 6b, 6c, . . . of the mandrel 6, and this portion becomes locally thick.
マンドレル６と圧縮部材８とが所定の位置まで
下降した状態で分割金型９，１０を締める。つい
でマンドレル６に設けた流体吐出流路（図示せ
ず）よりパリスン１１内に圧力流体を吹込んでブ
ロー成形される（第４図）。 With the mandrel 6 and compression member 8 lowered to a predetermined position, the split molds 9 and 10 are tightened. Then, pressure fluid is blown into the parison 11 from a fluid discharge channel (not shown) provided in the mandrel 6 to perform blow molding (FIG. 4).
上記のようにして分割金型９，１０のキヤビテ
イ９ａ，１０ａに沿つて成形された中空成形品の
内面には第６図に示すように、マンドレル６の凹
条部６ａ，６ｂ，６ｃ，…に対向する部分に突起
１２ａ，１２ｂ，１２ｃ，…が突設される。 As shown in FIG. 6, the inner surface of the hollow molded product molded along the cavities 9a, 10a of the split molds 9, 10 as described above has grooves 6a, 6b, 6c, . . . of the mandrel 6. Protrusions 12a, 12b, 12c, .
第６図は上記成形品の一例である保温ポツト１
３を示すもので、この保温ポツト１３の内面に突
設される突起１２ａ，１２ｂ，１２ｃ，…の内径
はこの保温ポツト１３内に収容する内容器１４の
外径と略同一になつている。そしてこの保温ポツ
ト１３内に内容器１４を挿入した状態で構成され
る保温ポツト１３の内径面と内容器１４の外周面
との間の空間内に発泡体等の断熱材１５を充填す
る。この断熱材１５は突起１２ａ，１２ｂ，１２
ｃ，…に干渉されて保温ポツト１３より抜け出る
ことがない。 Figure 6 shows a heating pot 1 which is an example of the above molded product.
3, the inner diameters of the protrusions 12a, 12b, 12c, . A heat insulating material 15 such as a foam is filled in the space between the inner surface of the heat retaining pot 13 and the outer circumferential surface of the inner container 14, which is formed with the inner container 14 inserted into the heat retaining pot 13. This heat insulating material 15 has protrusions 12a, 12b, 12
It will not come out of the heat retaining pot 13 due to interference from the heat retaining pot 13.
発明の効果
本発明によれば、ブロー成形法によつて成形さ
れる中空成形品の内面に局部的な突起１２ａ，１
２ｂ，１２ｃ，…をその容器の外側に凹部を形成
することなく成形することができ、従つて内側面
に突起を必要とする容器をもブロー成形法にて成
形することができ、この種の中空成形品の成形を
安価にすることができる。Effects of the Invention According to the present invention, local protrusions 12a, 1 are formed on the inner surface of a hollow molded product formed by blow molding.
2b, 12c, ... can be molded without forming recesses on the outside of the container, and therefore containers that require protrusions on the inside surface can also be molded by blow molding, and this type of Hollow molded products can be formed at low cost.
図面は本発明の実施例を示すもので、第１図か
ら第４図は要部の構成と成形工程を示す断面図、
第５図はマンドレルを示す斜視図、第６図は本発
明装置に成形される中空成形品の一例を示す断面
図、第７図は第６図の−線に沿う断面図、第
８図は完成品の断面図、第９図はその斜視図であ
る。
１は押出頭、６はマンドレル、８は圧縮部材、
６ａ，６ｂ，６ｃ，…は凹条部、９，１０は分割
金型、１１はパリスン。
The drawings show examples of the present invention, and FIGS. 1 to 4 are cross-sectional views showing the configuration of main parts and the molding process,
FIG. 5 is a perspective view showing a mandrel, FIG. 6 is a cross-sectional view showing an example of a hollow molded product molded by the apparatus of the present invention, FIG. 7 is a cross-sectional view taken along the - line in FIG. 6, and FIG. A sectional view of the completed product, and FIG. 9 is a perspective view thereof. 1 is an extrusion head, 6 is a mandrel, 8 is a compression member,
6a, 6b, 6c, . . . are concave portions, 9, 10 are split molds, and 11 is a parison.
Claims (1)
頭１の軸心部に摺動自在に設けたマンドレル６
と、先端面が上記マンドレル６の先端面に対向
し、かつマンドレル６の軸心方向に移動自在に設
けた圧縮部材８と、押出頭より突出動したマンド
レル６及び圧縮部材８の先端部を囲繞する位置に
設けた分割金型９，１０と、マンドレル６の外周
面に位置するパリスン１１の内側に圧力流体を吹
込む圧力吹込み手段とからなり、上記マンドレル
６の外周面の所定の位置に凹条部６ａ，６ｂ，６
ｃ，…を設けたことを特徴とする中空体のブロー
成形装置。1. An extrusion head 1 for extruding the parison 11, and a mandrel 6 slidably provided at the axial center of the extrusion head 1.
and a compression member 8 whose distal end face faces the distal end face of the mandrel 6 and is movable in the axial direction of the mandrel 6, and a compression member 8 that protrudes from the extrusion head and surrounds the distal end of the mandrel 6 and the compression member 8. It consists of split molds 9 and 10 provided at predetermined positions on the outer circumferential surface of the mandrel 6, and a pressure blowing means for blowing pressurized fluid into the inside of the parison 11 located on the outer circumferential surface of the mandrel 6. Concave portions 6a, 6b, 6
A blow molding device for a hollow body, characterized in that it is provided with c,...
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123819A JPS62280021A (en) | 1986-05-30 | 1986-05-30 | Blow molding equipment for hollow body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123819A JPS62280021A (en) | 1986-05-30 | 1986-05-30 | Blow molding equipment for hollow body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62280021A JPS62280021A (en) | 1987-12-04 |
| JPH0441898B2 true JPH0441898B2 (en) | 1992-07-09 |
Family
ID=14870133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61123819A Granted JPS62280021A (en) | 1986-05-30 | 1986-05-30 | Blow molding equipment for hollow body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62280021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11890503B2 (en) | 2020-08-20 | 2024-02-06 | Grassroots Physical Therapy Llc | Ankle dorsiflexion therapy device |
-
1986
- 1986-05-30 JP JP61123819A patent/JPS62280021A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11890503B2 (en) | 2020-08-20 | 2024-02-06 | Grassroots Physical Therapy Llc | Ankle dorsiflexion therapy device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62280021A (en) | 1987-12-04 |
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