JPH01247137A - Preparation of large diameter packing for drum can - Google Patents
Preparation of large diameter packing for drum canInfo
- Publication number
- JPH01247137A JPH01247137A JP63075227A JP7522788A JPH01247137A JP H01247137 A JPH01247137 A JP H01247137A JP 63075227 A JP63075227 A JP 63075227A JP 7522788 A JP7522788 A JP 7522788A JP H01247137 A JPH01247137 A JP H01247137A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- drum
- packing
- long
- large diameter
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 239000004088 foaming agent Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 8
- 241001272720 Medialuna californiensis Species 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- 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
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、ドラム缶に使用する大径パッキングを安価
にて提供するドラム缶用大径パッキングの製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing large-diameter packing for drum cans, which provides large-diameter packing for use in drum cans at low cost.
（従来の技術）
従来、ドラム缶に使用する大径パッキングは、大型の成
形金型に、長尺のパッキングの外形を成形すべく凹溝を
複数本、実際には５〜１０本程度刻設し、この凹溝に合
成樹脂材を注入して成形する方法が取られていた。(Prior art) Conventionally, large-diameter packing used for drum cans is produced by carving multiple grooves, in fact about 5 to 10 grooves, in a large mold to form the outer shape of the long packing. The method used was to inject a synthetic resin material into this groove and mold it.
（発明が解決しようとする問題点）
ところが、この方法であると、ドラム缶の大きさによっ
てパッキングの長さがまちまちであるため、その都度金
型を別個に作らなくてはならず、コストアップに繋がる
ものであり、又、その １台の金型の製造費用も、長尺
材のものを成形するため全体が大型となっているから非
常に高価となり、特に、パッキングの生産量が少ない場
合には、そのパッキングのコストに直接金型の製造費用
が上乗せされ、大幅なコストアップになってしまう問題
点があった。(Problem to be solved by the invention) However, with this method, the length of the packing varies depending on the size of the drum, so a mold must be made separately each time, which increases costs. In addition, the manufacturing cost of one mold is very expensive because the entire mold is large because it molds a long material, especially when the production volume of packing is small. However, there was a problem in that the manufacturing cost of the mold was directly added to the packing cost, resulting in a significant increase in cost.
そこで、この発明は、上述した問題点等に鑑み、少量生
産であっても大量生産であっても金型の費用を最小限に
抑えて、ドラム缶用大径パッキングの製造のコストダウ
ンを図ることを課題として創出されたものである。Therefore, in view of the above-mentioned problems, the present invention aims to reduce the cost of manufacturing large-diameter packing for drum cans by minimizing the cost of molds whether in small-scale production or mass-production. It was created with the problem in mind.
（問題点を解決するための手段）
この発明は、塩化ビニールの如き合成樹脂材料に発泡剤
を混入し、その後、この混合材料を加熱しながら成形金
型から押出して押出し成形を行い、ドラム缶のパッキン
グとしての所定断面を有する発泡樹脂製の長尺材を形成
し、この長尺材を大径環形状に湾曲させることにより、
上述した問題点を解決するものである。(Means for Solving the Problems) This invention involves mixing a foaming agent into a synthetic resin material such as vinyl chloride, and then extruding the mixed material through a mold while heating it to form a drum can. By forming a long material made of foamed resin with a predetermined cross section as packing and curving this long material into a large-diameter ring shape,
This solves the above-mentioned problems.
（作用）
この発明に係るドラム缶用大径パッキングの製造方法は
、塩化ビニールの如き合成樹脂材料に発泡剤を混入し、
その後、この混合材料を加熱しながら成形金型から押出
して押出し成形を行うと、発泡樹脂製ドラム缶パッキン
グとしての所定断面を有する発泡樹脂製の長尺材が形成
される。(Function) The method for producing large-diameter packing for drums according to the present invention includes mixing a foaming agent into a synthetic resin material such as vinyl chloride;
Thereafter, this mixed material is extruded from a mold while being heated to perform extrusion molding, thereby forming a long foamed resin material having a predetermined cross section as a foamed resin drum packing.
そして、このように成形された長尺材を大径環形状に湾
曲させることでパッキングに成形する。Then, the long material thus formed is formed into a packing by curving it into a large-diameter ring shape.
（実施例）
以下、図面を参照してこの発明の一実施例を説明すると
次の通りである。(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.
すなわち、第１図に示す符号１は成形金型であり、この
金型は、押出し口２の断面形状が、ドラム缶のパッキン
グとしての所定断面形状、例えば、略半月形状となるよ
うに形成しである。That is, the reference numeral 1 shown in FIG. 1 is a molding die, and this die is formed so that the cross-sectional shape of the extrusion port 2 is a predetermined cross-sectional shape for packing a drum, for example, a substantially half-moon shape. be.
そして、先ず、塩化ビニールの如き合成樹脂材料に発泡
剤を混入し、その後、この混合材料を加熱しながら前記
成形金型１の押出し口２から押出して押出し成形を行う
。First, a foaming agent is mixed into a synthetic resin material such as vinyl chloride, and then this mixed material is extruded from the extrusion port 2 of the molding die 1 while being heated to perform extrusion molding.
そうすると、第２図に示すように、ドラム缶のパッキン
グとしての所定断面を有する発泡樹脂製の長尺材３が形
成される。その時に、その長尺材３の長さは、押出され
てきた材料を適宜切断することで設定することができる
。そのため、断面形状が同一であれば、ドラム缶の径が
異なっても長さを自由に設定できるため、１台の成形金
型１で製造できる。しかも、前記押出し口２を構成する
だけの大きさの成形金型１であれば良いので、金型１全
体は小型となり、金型の製造費用を低く抑えることがで
きる。Then, as shown in FIG. 2, a long material 3 made of foamed resin and having a predetermined cross section as packing for a drum is formed. At this time, the length of the long material 3 can be set by appropriately cutting the extruded material. Therefore, as long as the cross-sectional shape is the same, the length can be freely set even if the diameter of the drum is different, so that the drum can can be manufactured using one molding die 1. Furthermore, since the mold 1 only needs to be large enough to form the extrusion port 2, the entire mold 1 can be made small, and the manufacturing cost of the mold can be kept low.
このようにして成形された前記長尺材３は、第３図に示
すように、ドラム缶用として最適な大径に湾曲され略環
状となるように成形されパッキング４が完成するもので
ある。As shown in FIG. 3, the long material 3 thus formed is curved into a substantially annular shape with a large diameter suitable for drum cans, thereby completing the packing 4.
尚、材質、或いは、断面形状については、前述した実施
例に限定されることがないことは言うまでもない。It goes without saying that the material or the cross-sectional shape is not limited to the embodiments described above.
（発明の効果）
上述の如く構成したこの発明は、塩化ビニールの如き合
成樹脂材料に発泡剤を混入し、その後、この混合材料を
加熱しながら成形金型１から押出して押出し成形を行い
、ドラム缶のパッキングとしての所定断面を有する発泡
樹脂製の長尺材３を形成し、この長尺材３を大径環形状
に湾曲させることにより、前述したように、断面形状が
同一であれば、ドラム缶の径が異なっても長さを自由に
設定できるため、１台の成形金型１で製造できる。(Effects of the Invention) In the present invention configured as described above, a foaming agent is mixed into a synthetic resin material such as vinyl chloride, and then this mixed material is extruded from a molding die 1 while being heated to perform extrusion molding. By forming a long material 3 made of foamed resin with a predetermined cross section as a packing, and curving this long material 3 into a large-diameter ring shape, as described above, if the cross-sectional shape is the same, the drum can Since the length can be set freely even if the diameters of the molds are different, the molding die 1 can be manufactured using one molding die 1.
従って、従来例の如く、パッキング４の大きさによって
成形金型を換える必要がないので型代が安く済むのであ
る。しかも、前記押出し口２を構成するだけの大きさの
成形金型１であれば良いので、金型１全体は小型となり
、金型の製造費用を低く抑えることができる。Therefore, unlike the conventional example, there is no need to change the molding die depending on the size of the packing 4, so the mold cost can be reduced. Furthermore, since the mold 1 only needs to be large enough to form the extrusion port 2, the entire mold 1 can be made small, and the manufacturing cost of the mold can be kept low.
そして、全体の工程が非常に簡単なので熟練者を要せず
、誰にでも簡単に且つ短時間にてパッキング４の製造を
行うことができるものである。Moreover, since the entire process is very simple, no skilled person is required, and anyone can manufacture the packing 4 easily and in a short time.
しかも、この工程は、量産ラインにも組込むことが可能
であるから、多種少量生産、大量生産の両方に適するも
のである。Furthermore, since this process can be incorporated into a mass production line, it is suitable for both low-volume production of a wide variety of products and mass production.
このように、この発明によれば、多種少量生産であって
も大量生産であっても金型の費用を最小限に抑えること
ができ、ドラム缶用大径パッキングの製造のコストダウ
ンを図ることができる等の優れた効果を奏する。As described above, according to the present invention, the cost of molds can be kept to a minimum whether it is a variety of small-lot production or mass production, and it is possible to reduce the cost of manufacturing large-diameter packing for drum cans. It has excellent effects such as:
図面はこの発明の一実施例を示すもので、第１図は成形
金型による押出し成形中の要部斜視図、第２図は成形さ
れた長尺材の斜視図、第３図は成形されたパッキングの
斜視図である。
１・・・成形金型、２・・・押出し口、３・・・長尺材
、４・・・パッキング。
第１図
第２図The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the main part during extrusion molding with a mold, FIG. FIG. 1... Molding die, 2... Extrusion port, 3... Long material, 4... Packing. Figure 1 Figure 2
Claims (1)
、その後、この混合材料を加熱しながら成形金型から押
出して押出し成形を行い、ドラム缶のパッキングとして
の所定断面を有する発泡樹脂製の長尺材を形成し、この
長尺材を大径環形状に湾曲させることを特徴としたドラ
ム缶用大径パッキングの製造方法。1. A foaming agent is mixed into a synthetic resin material such as vinyl chloride, and then this mixed material is extruded from a mold while being heated to perform extrusion molding to produce a long foamed resin material with a predetermined cross section as packing for drums. A method for manufacturing a large-diameter packing for a drum can, comprising forming a long material and curving the long material into a large-diameter ring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63075227A JPH01247137A (en) | 1988-03-29 | 1988-03-29 | Preparation of large diameter packing for drum can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63075227A JPH01247137A (en) | 1988-03-29 | 1988-03-29 | Preparation of large diameter packing for drum can |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01247137A true JPH01247137A (en) | 1989-10-03 |
Family
ID=13570128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63075227A Pending JPH01247137A (en) | 1988-03-29 | 1988-03-29 | Preparation of large diameter packing for drum can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01247137A (en) |
-
1988
- 1988-03-29 JP JP63075227A patent/JPH01247137A/en active Pending
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