JP2006192908A - Blow molding method - Google Patents

Blow molding method Download PDF

Info

Publication number
JP2006192908A
JP2006192908A JP2006090013A JP2006090013A JP2006192908A JP 2006192908 A JP2006192908 A JP 2006192908A JP 2006090013 A JP2006090013 A JP 2006090013A JP 2006090013 A JP2006090013 A JP 2006090013A JP 2006192908 A JP2006192908 A JP 2006192908A
Authority
JP
Japan
Prior art keywords
parison
blow molding
guide
extruder head
molding method
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.)
Granted
Application number
JP2006090013A
Other languages
Japanese (ja)
Other versions
JP4792315B2 (en
JP2006192908A5 (en
Inventor
Kazuya Koizumi
小泉和也
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.)
Aitec Co Ltd
Original Assignee
Aitec 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 Aitec Co Ltd filed Critical Aitec Co Ltd
Priority to JP2006090013A priority Critical patent/JP4792315B2/en
Publication of JP2006192908A publication Critical patent/JP2006192908A/en
Publication of JP2006192908A5 publication Critical patent/JP2006192908A5/ja
Application granted granted Critical
Publication of JP4792315B2 publication Critical patent/JP4792315B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that high manufacturing costs are required due to increase in investment in equipment and cost for power in the conventional blow molding methods such as a blow molding method including the step of moving a die or an extruder head or a blow molding method including the step of sucking a parison for blow-molding a hollow article with a complicated curved shape. <P>SOLUTION: A parison guide with a desired curvature is installed on the extruder head of the blow molding device, the parison extruded from the extruder head is guided along the parion guide, and the parison before mold clamping is shaped into the curved shape and simultaneously suspended. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、カーブ形状を有するもののブロー成形方法に関する。   The present invention relates to a blow molding method having a curved shape.

従来の、カーブ形状を有するものをブロー成形する方法として、特許文献１に示すような金型或いは押出し機ヘッドを動かすブロー成形方法、またはエアでパリソンを吸引するブロー成形方法などがある。
特開平１０−１０９３５５ As a conventional method for blow-molding a curved shape, there is a blow-molding method for moving a mold or an extruder head as shown in Patent Document 1, or a blow-molding method for sucking a parison with air.
JP-A-10-109355

しかし、従来のブロー成形方法では設備投資が高くつき、また動力費が嵩むので製造コストが高くなるという欠点があった。   However, the conventional blow molding method has the disadvantages that the capital investment is high and the power cost is high, resulting in high manufacturing costs.

解決しようとする課題は、従来のブロー成形方法では設備投資や動力費が嵩み製造コストが高くなるという点である。   The problem to be solved is that the conventional blow molding method increases capital investment and power cost and increases manufacturing cost.

本発明は、ブロー成形装置の押出し機ヘッドにカーブ形状を有するパリソンガイドを取り付け、該押出し機ヘッドから押出されたパリソンを該パリソンガイドに沿って導き、型締め前の該パリソンを所望のカーブ形状に賦形しながら垂下させることを最も主要な特徴とする。   The present invention attaches a parison guide having a curved shape to an extruder head of a blow molding apparatus, guides the parison extruded from the extruder head along the parison guide, and allows the parison before mold clamping to have a desired curved shape. The main feature is that it is drooped while shaping.

複雑なカーブ形状を有する中空品をブロー成形する場合でも、高価な設備投資を必要とせず、安価に、しかも余分なバリの発生を極力抑えた成形品を得ることができるという利点がある。
また、該パリソンガイドを形状記憶合金で構成すれば仮に該パリソンガイドが変形しても次の成形サイクル時には自動的に元の形状に復元し、何の支障もなく成形を続行することが出来ると言う利点がある。 Even when a hollow product having a complicated curve shape is blow-molded, there is an advantage that it is possible to obtain a molded product that does not require expensive capital investment, and that is inexpensive and suppresses generation of extra burrs as much as possible.
In addition, if the parison guide is made of a shape memory alloy, even if the parison guide is deformed, it is automatically restored to the original shape at the next molding cycle, and molding can be continued without any trouble. There is an advantage to say.

複雑なカーブ形状を有する中空品をブロー成形するという目的を、ブロー成形装置の押出し機ヘッドに所望のカーブ形状を有するパリソンガイドを取り付け、該押出し機ヘッドから押出されたパリソンを該パリソンガイドに沿って導き、型締め前の該パリソンを所望のカーブ形状に賦形しながら垂下させることにより、高価な設備投資を必要とせず、安価に、しかも余分なバリの発生を抑制したことで肉厚の均一性を損なわずに実現した。 For the purpose of blow molding a hollow product having a complicated curve shape, a parison guide having a desired curve shape is attached to the extruder head of the blow molding apparatus, and the parison extruded from the extruder head is moved along the parison guide. By leading the parison before mold clamping into a desired curve shape while hanging down, it is not necessary to invest in expensive equipment, and at the same time, the generation of extra burrs is suppressed at a low cost. Realized without loss of uniformity.

図１は、カーブ形状を有する中空品１の斜視図である。ブロー成形で該中空品１を作るに際し、肉厚を均一に保つためにバリの発生を極力抑えたい。   FIG. 1 is a perspective view of a hollow article 1 having a curved shape. When making the hollow product 1 by blow molding, it is desirable to suppress the generation of burrs as much as possible in order to keep the wall thickness uniform.

図２は本発明による１実施例を示しており、金属製のパリソンガイド３が図示しないブロー成形装置の押出し機ヘッド４のマンドレル５にネジ部６によって締結されている。７は緩み止め用のナットである。 FIG. 2 shows an embodiment according to the present invention, in which a metal parison guide 3 is fastened by a screw portion 6 to a mandrel 5 of an extruder head 4 of a blow molding apparatus (not shown). Reference numeral 7 denotes a locking nut.

次に本発明の作用を説明する。
先ず溶融樹脂からなるパリソン２が該押出し機ヘッド４から押出され、該パリソンガイド３に沿って所望の形状に曲がりながら垂下している。次に図の表裏の方向から図示しない分割金型が閉じ、該パリソン２の内部に図示しない下側の吹込み装置からエアを吹き込んで該中空品１の形状を賦形するが、この時該パリソン２は所望の形状に曲っているため、余分のバリを発生することが無い。 Next, the operation of the present invention will be described.
First, the parison 2 made of a molten resin is extruded from the extruder head 4 and hangs down along the parison guide 3 while being bent into a desired shape. Next, a split mold (not shown) is closed from the front and back of the figure, and air is blown into the inside of the parison 2 from a lower blowing device (not shown) to shape the shape of the hollow article 1. Since the parison 2 is bent into a desired shape, no extra burr is generated.

成形後、該中空品１を取り出す時は該パリソンガイド３に沿って該パリソン２を引抜けば良い。 When the hollow product 1 is taken out after molding, the parison 2 may be pulled out along the parison guide 3.

尚、該パリソンガイド３を形状記憶合金で構成すれば、該中空品１を取り出す際に無理な力が加わって該パリソンガイド３が変形しても、次の成形サイクル時の該パリソン２の再押出し及び再垂下により、再押出し直後の高温の該パリソン２の熱が該パリソンガイド３に伝わり、該形状記憶合金中に記憶された元の形状が呼び戻されて該パリソンガイド３は元の形状に復元する。 If the parison guide 3 is made of a shape memory alloy, even if an unreasonable force is applied when the hollow product 1 is taken out and the parison guide 3 is deformed, the parison guide 3 can be reassembled during the next molding cycle. The heat of the parison 2 at a high temperature immediately after the re-extrusion is transferred to the parison guide 3 by the extrusion and the re-sag, the original shape stored in the shape memory alloy is recalled, and the parison guide 3 is restored to the original shape. Restore.

該形状記憶合金に求められる性質としては該パリソン２を引抜く際に柔軟で変形し易いよう該形状記憶合金のマルテンサイト変態終了温度 Mf点が成形後の該中空品取り出し時のパリソン内空気温よりも高く、また再押出し直後の高温の該パリソン２の熱が該パリソンガイド３に伝わり、該形状記憶合金中に記憶された元の形状が呼び戻されて該パリソンガイド３が元の形状に復元するためにマルテンサイト逆変態終了温度 Af点がパリソン垂下時の該パリソン内空気温よりも低い必要があるが、このような要求を満たす合金としては原子比１：１のNi-Ti合金の元素Niを元素Pdで４５モル％程度置換したものが知られており、そのMf、およびAfはそれぞれ約９５℃、１３０℃程度であって前記の条件を充分満たすものである。 The shape memory alloy is required to have a martensite transformation end temperature M f point of the shape memory alloy when the parison 2 is pulled out so that the inside of the parison when the hollow article is taken out after molding is formed. The heat of the parison 2 which is higher than the temperature and immediately after the re-extrusion is transferred to the parison guide 3, the original shape stored in the shape memory alloy is recalled, and the parison guide 3 is restored to the original shape. In order to restore, the martensite reverse transformation end temperature Af point needs to be lower than the air temperature in the parison when the parison is drooping. An alloy satisfying such a requirement is a Ni-Ti alloy having an atomic ratio of 1: 1. The element Ni is replaced by about 45 mol% with the element Pd, and its M f and A f are about 95 ° C. and 130 ° C., respectively, and sufficiently satisfy the above conditions.

以上、本発明によれば複雑なカーブ形状を有する中空品をブロー成形する場合でも、高価な設備投資を必要とせず、安価に、しかもバリの発生を極力抑えた成形品を得ることができると言う効果が得られる。
また、該パリソンガイドを形状記憶合金で構成すれば仮に該パリソンガイドが変形しても次の成形サイクル時には自動的に元の形状に復元し、そのまま成形を続行することが出来ると言う利点がある。 As described above, according to the present invention, even when blow molding a hollow product having a complicated curve shape, it is possible to obtain a molded product that does not require expensive capital investment, and that is inexpensive and suppresses the generation of burrs as much as possible. The effect to say is acquired.
Further, if the parison guide is made of a shape memory alloy, there is an advantage that even if the parison guide is deformed, it is automatically restored to the original shape at the next molding cycle, and the molding can be continued as it is. .

本発明は、ブロー成形法一般に広く利用可能である。 The present invention is widely applicable to general blow molding methods.

カーブ形状を有する中空品の斜視図Perspective view of hollow product with curved shape 本発明の実施例を示す断面図Sectional drawing which shows the Example of this invention

符号の説明Explanation of symbols

１ 中空品
２ パリソン
３ パリソンガイド
４ 押出し機ヘッド
５ マンドレル
６ ネジ部
７ 緩み止め用のナット DESCRIPTION OF SYMBOLS 1 Hollow product 2 Parison 3 Parison guide 4 Extruder head 5 Mandrel 6 Screw part 7 Nut for prevention of loosening

Claims (2)

ブロー成形装置の押出し機ヘッドにカーブ形状を有するパリソンガイドを取り付け、該押出し機ヘッドから押出されたパリソンを該パリソンガイドに沿って導き、型締め前の該パリソンを該カーブ形状に賦形しながら垂下させることを特徴とするブロー成形方法。 A parison guide having a curved shape is attached to the extruder head of the blow molding apparatus, the parison extruded from the extruder head is guided along the parison guide, and the parison before clamping is shaped into the curved shape. A blow molding method characterized by drooping. マルテンサイト変態終了温度 Mf点が成形後の中空品取り出し時のパリソン内空気温より高く、マルテンサイト逆変態終了温度 Af点がパリソン垂下時の該パリソン内空気温より低いという性質を有する形状記憶合金で構成したことを特徴とする請求項１に述べたパリソンガイド。 Martensitic transformation end temperature M f point is higher than the air temperature in the parison when the hollow product is removed after molding, and the martensitic reverse transformation end temperature A f point is lower than the air temperature in the parison when the parison is drooping The parison guide according to claim 1, wherein the parison guide is made of a memory alloy.
JP2006090013A 2006-03-29 2006-03-29 Blow molding method Expired - Fee Related JP4792315B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006090013A JP4792315B2 (en) 2006-03-29 2006-03-29 Blow molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006090013A JP4792315B2 (en) 2006-03-29 2006-03-29 Blow molding method

Publications (3)

Publication Number Publication Date
JP2006192908A true JP2006192908A (en) 2006-07-27
JP2006192908A5 JP2006192908A5 (en) 2006-09-07
JP4792315B2 JP4792315B2 (en) 2011-10-12

Family

ID=36799325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006090013A Expired - Fee Related JP4792315B2 (en) 2006-03-29 2006-03-29 Blow molding method

Country Status (1)

Country Link
JP (1) JP4792315B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112895399A (en) * 2021-01-17 2021-06-04 程瑾 All-in-one is carried in processing of PP plastic bottle

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5692026A (en) * 1979-12-25 1981-07-25 Inoue Mtp Co Ltd Method and apparatus for blow-molding hollow product
JPS6241516U (en) * 1985-08-29 1987-03-12
JPS635925A (en) * 1986-06-27 1988-01-11 Tokai Rubber Ind Ltd Mandrel for forming bent hose
JPS63280613A (en) * 1987-05-12 1988-11-17 Purakoo:Kk Blow molding method and device
JPH01145108A (en) * 1987-11-30 1989-06-07 Toto Ltd Molding device for bent pipe
JPH03240516A (en) * 1990-02-19 1991-10-25 Japan Steel Works Ltd:The Method and apparatus for blow-molding
JPH03275338A (en) * 1990-03-26 1991-12-06 Calsonic Corp Manufacture of rubber bend hose
JPH04296527A (en) * 1991-03-26 1992-10-20 Ube Ind Ltd Method and device for blow molding
JPH04371825A (en) * 1991-06-21 1992-12-24 Japan Steel Works Ltd:The Blow molding
JPH04371824A (en) * 1991-06-21 1992-12-24 Japan Steel Works Ltd:The Blow molding method and device
JPH05200841A (en) * 1992-01-28 1993-08-10 Japan Steel Works Ltd:The Blow molding method and apparatus
JPH05338014A (en) * 1992-06-10 1993-12-21 Japan Steel Works Ltd:The Method and apparatus for blow molding
JPH06126812A (en) * 1992-10-16 1994-05-10 Japan Steel Works Ltd:The Blow molding method and device
JPH0768628A (en) * 1993-09-03 1995-03-14 Japan Steel Works Ltd:The Method and apparatus for blow molding
JPH07256648A (en) * 1994-03-17 1995-10-09 Toyoda Gosei Co Ltd Production of bent hose
JPH07314537A (en) * 1994-05-23 1995-12-05 Japan Steel Works Ltd:The Method and machine for blow-molding

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5692026A (en) * 1979-12-25 1981-07-25 Inoue Mtp Co Ltd Method and apparatus for blow-molding hollow product
JPS6241516U (en) * 1985-08-29 1987-03-12
JPS635925A (en) * 1986-06-27 1988-01-11 Tokai Rubber Ind Ltd Mandrel for forming bent hose
JPS63280613A (en) * 1987-05-12 1988-11-17 Purakoo:Kk Blow molding method and device
JPH01145108A (en) * 1987-11-30 1989-06-07 Toto Ltd Molding device for bent pipe
JPH03240516A (en) * 1990-02-19 1991-10-25 Japan Steel Works Ltd:The Method and apparatus for blow-molding
JPH03275338A (en) * 1990-03-26 1991-12-06 Calsonic Corp Manufacture of rubber bend hose
JPH04296527A (en) * 1991-03-26 1992-10-20 Ube Ind Ltd Method and device for blow molding
JPH04371825A (en) * 1991-06-21 1992-12-24 Japan Steel Works Ltd:The Blow molding
JPH04371824A (en) * 1991-06-21 1992-12-24 Japan Steel Works Ltd:The Blow molding method and device
JPH05200841A (en) * 1992-01-28 1993-08-10 Japan Steel Works Ltd:The Blow molding method and apparatus
JPH05338014A (en) * 1992-06-10 1993-12-21 Japan Steel Works Ltd:The Method and apparatus for blow molding
JPH06126812A (en) * 1992-10-16 1994-05-10 Japan Steel Works Ltd:The Blow molding method and device
JPH0768628A (en) * 1993-09-03 1995-03-14 Japan Steel Works Ltd:The Method and apparatus for blow molding
JPH07256648A (en) * 1994-03-17 1995-10-09 Toyoda Gosei Co Ltd Production of bent hose
JPH07314537A (en) * 1994-05-23 1995-12-05 Japan Steel Works Ltd:The Method and machine for blow-molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112895399A (en) * 2021-01-17 2021-06-04 程瑾 All-in-one is carried in processing of PP plastic bottle

Also Published As

Publication number Publication date
JP4792315B2 (en) 2011-10-12

Similar Documents

Publication Publication Date Title
KR102022601B1 (en) Parison Blow Molding Method for Improving Mold Safe-Arrival of Parison
JP2017094389A (en) Double cross section extrusion device and extrusion method
CN111231383A (en) Medical thin-walled tube continuous forming equipment and polylactic acid thin-walled tube forming method
JP4792315B2 (en) Blow molding method
TWI265940B (en) B29k 67/00 200601 a x htw
JP2016078400A (en) Press blow molding apparatus
JP2004521779A (en) Apparatus and method suitable for cooling and heating control of tubular objects
EP1134065A3 (en) Method and apparatus for designing molds, extruder dies and cores
CN205871044U (en) Inside spin parts machining mould
CN209476972U (en) A kind of Double metal composite heat exchanging pipe forming apparatus
CN108162361B (en) Hollow pipe body forming method
EP1232848B1 (en) Extrusion blow molding method and tool
JP2006082307A (en) Manufacturing method of resin pipe
CN202290819U (en) Drawing mold for production of profile material of electrical high-speed railway feedback wire clamp
JP2000301312A (en) Production of cylindrical formed product with die casting, apparatus therefor and cylindrical frame
CN214348716U (en) Seamless pipe extrusion forming device
CN213891153U (en) Pipe forming die
JPH05329926A (en) Manufacture of biaxially oriented pipe or tube
CN102397901A (en) Production technology of front beam aluminium section
JP2006188071A (en) Blow-molding method of hollow duct with bellows
EP3502046B1 (en) Method and apparatus for manufacturing micro-molded product by using metal wire
JP2018149704A (en) Blow molding method
CN116408609A (en) Precise forming method of star sleeve parts
JP2023547702A (en) Male element of mold
JPH07125046A (en) Production of synthetic resin pipe

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20060330

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060718

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090216

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110706

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110719

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110725

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140729

Year of fee payment: 3

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140729

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees