JPS63298398A - Manufacture of resin-made silencer - Google Patents
Manufacture of resin-made silencerInfo
- Publication number
- JPS63298398A JPS63298398A JP62133989A JP13398987A JPS63298398A JP S63298398 A JPS63298398 A JP S63298398A JP 62133989 A JP62133989 A JP 62133989A JP 13398987 A JP13398987 A JP 13398987A JP S63298398 A JPS63298398 A JP S63298398A
- Authority
- JP
- Japan
- Prior art keywords
- ventilation pipe
- silencing chamber
- blow molding
- silencer
- resin
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000003584 silencer Effects 0.000 title claims description 8
- 238000009423 ventilation Methods 0.000 claims description 20
- 230000030279 gene silencing Effects 0.000 claims description 19
- 238000000071 blow moulding Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本願は、通気管の側壁にカップ状の消音室を一体的に設
けた構造の樹脂製消音器の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present application relates to a method of manufacturing a resin muffler having a structure in which a cup-shaped muffling chamber is integrally provided on the side wall of a vent pipe.
樹脂製消音器は、通気管１の側壁にカップ状の消音室２
を一体的に有し、連通孔３により通気管１と消音室２と
を連通させた構造のものである。このような消音器は、
ブロー成形により、得られる。従来の製法は、まず、消
音室２を形成する。その際、消音室２は、上方部２ａと
下方部２ｂとに区画して作られる。次いで、通気管１を
ブロー成形１こより形成し同時に消音室２の上方部２ａ
をインサートブロー成形しこれらを一体化する。さら６
ζ、この一体化したものの通気管ｌの側壁に連通孔３を
穿設し消音室の上方部２ａと下方部２ｂとを溶着すると
樹脂製消音器が得られる。The resin silencer has a cup-shaped silencer chamber 2 on the side wall of the ventilation pipe 1.
It has a structure in which the ventilation pipe 1 and the silencing chamber 2 are communicated with each other through the communication hole 3. This kind of silencer is
Obtained by blow molding. In the conventional manufacturing method, first, the silencing chamber 2 is formed. At this time, the silencing chamber 2 is divided into an upper part 2a and a lower part 2b. Next, the ventilation pipe 1 is formed by blow molding, and at the same time the upper part 2a of the silencing chamber 2 is formed.
These are integrated by insert blow molding. Sara 6
ζ, a communication hole 3 is bored in the side wall of the ventilation pipe 1 of this integrated product, and the upper part 2a and lower part 2b of the muffling chamber are welded to obtain a resin muffler.
なお、少なくとも消音室２の上方部２ａは、その一方の
開放端縁が通気管１に連結されるので、該端縁を側方に
突出させた形状としなければならず、そのためブロー成
形ではなくインジェクシ震ン成形により形成される。Note that at least the upper part 2a of the silencing chamber 2 has one open end edge connected to the ventilation pipe 1, so the end edge must be shaped to protrude laterally, and therefore it is not blow molded. Formed by injection molding.
上記製法では、予じめ一体哨１せたカップ状消音室２を
通気管１のブロー成形時にインサートすれば連通孔３を
穿設することができないので、消音室２を上方部２ａと
下方部２ｂと弱画しなければならず、部品数を増加させ
るととも：こ製作に手間を要する。また、消音室２の上
方部２ａは、端縁の形状の関係で、はぼ均一肉厚のもの
を形成するのに好適なブロー成形を用いることができず
、インジェクシーン成形１こより形成されるあで異種の
成形過程を経ることになり、成形工程が複雑化するとい
う欠点を有している。In the above manufacturing method, if the cup-shaped silencing chamber 2 is inserted into the air pipe 1 during blow molding, the communicating hole 3 cannot be formed. 2b must be drawn, which increases the number of parts and requires time and effort to manufacture. Furthermore, due to the shape of the edges, the upper part 2a of the silencing chamber 2 cannot be formed by blow molding, which is suitable for forming a wall with a uniform thickness, and is therefore formed by injection molding. This has the disadvantage that different molding processes are required, making the molding process complicated.
カップ状の消音室と、側壁に環状の溶着座を設けた通気
管とを、予じめブー−成形により形成しておき、次に通
気管の溶着座の内部に連通孔を穿設し、さらに消音室の
上端縁と通気管の溶着座とを溶着する工程とした。A cup-shaped silencing chamber and a vent pipe with an annular weld seat provided on the side wall are formed in advance by boo molding, and then a communication hole is bored inside the weld seat of the vent pipe, A further step was to weld the upper edge of the silencing chamber to the welding seat of the ventilation pipe.
通気管の側壁に設けた環状の溶着座は、鎮座に当接され
る消音室の上端縁の径を増大させずに溶着可能であり、
消音室のブロー成形を可能にする。消音室は、一体的に
成形され部品数を減小させる。消音室、通気管はインジ
エクシーン成形を用いず、ブロー成形のみで形成され、
異る成形方法を必要としない。The annular welding seat provided on the side wall of the ventilation pipe can be welded without increasing the diameter of the upper edge of the silencing chamber that comes into contact with the seat,
Enables blow molding of sound deadening chambers. The muffling chamber is integrally molded to reduce the number of parts. The silencing chamber and ventilation pipes are formed only by blow molding, without using in-die exene molding.
No need for different molding methods.
〔実施例〕
第１図の樹脂製消音器にｊり本発明の製造方法を説明す
ると、まず、通気管１０と消音室１１とをブロー成形に
より形成する。次いで、通気管ｌＯの側壁に連通孔１２
を穿設する。さらに、消音室１１を通気管ｌＯの側壁に
溶着する工程から成る。[Example] To explain the manufacturing method of the present invention using the resin silencer shown in FIG. 1, first, a vent pipe 10 and a silence chamber 11 are formed by blow molding. Next, a communication hole 12 is formed in the side wall of the ventilation pipe IO.
to be drilled. Furthermore, it consists of a step of welding the silencing chamber 11 to the side wall of the ventilation pipe IO.
通気管１０、消音室１１は、たとえば半溶融状態のポリ
プロピレン、ポリエチレンを円筒状にしたものを、所定
形状の溝を設けた型内に配設し、その内部にエアを供給
して成形する周知のブロー成形法により形成されるが、
得られる通気管１０の側壁化環状の突出する溶着座１３
が形成されるように型の形状を設定する必要がある。通
気管ｌＯは、断面形状を円形でも矩形でも必要に応じ選
定できる。The ventilation pipe 10 and the silencing chamber 11 are formed using a well-known method in which, for example, semi-molten polypropylene or polyethylene is made into a cylindrical shape and placed in a mold with grooves of a predetermined shape, and air is supplied into the mold. It is formed by the blow molding method of
Side wall of the resulting ventilation pipe 10 Annular protruding weld seat 13
It is necessary to set the shape of the mold so that it is formed. The ventilation pipe IO can have a circular or rectangular cross-sectional shape as required.
連通孔１２は、通気管１０の溶着座１３の内部に穿設さ
れる。The communication hole 12 is bored inside the welding seat 13 of the ventilation pipe 10.
通気管１０の溶着座１３と消音室１１の溶着座との溶着
は、両者の接合面を熱板等により溶融させ、その後両者
を当接し、接合面を固化させる方法によりなされる。Welding of the welding seat 13 of the ventilation pipe 10 and the welding seat of the silencing chamber 11 is performed by melting the joint surfaces of the two using a hot plate or the like, and then bringing them into contact to solidify the joint surfaces.
消音室および通気管は、共にブロー成形により形成され
、異種な成形工程を要しない。消音室および通気管は、
共に予じめ成形され、連通孔の穿設は容易になし得、消
音室を２分割する必要がない。Both the muffling chamber and the ventilation pipe are formed by blow molding, eliminating the need for different molding processes. The silencing room and ventilation pipe are
Both are pre-molded, the communication hole can be easily bored, and there is no need to divide the silencing chamber into two.
以上のように、本発明の製造方法によれば、相対的にみ
てブロー成形より、より困難なインジェクシ■ン成形を
用いることなく、ブロー成形のみで消音室と通気管を形
成でき、部品数を増加することなく効率的に所期構造の
樹脂製消音器をもたらす。As described above, according to the manufacturing method of the present invention, the silencing chamber and the ventilation pipe can be formed only by blow molding without using injection molding, which is relatively more difficult than blow molding, and the number of parts can be reduced. To efficiently provide a resin silencer with the desired structure without increasing the size.
第１図は、本発明により得られる消音器の断面図、第２
図は従来の方法による消音器の断面図である。
１０・・・・・・通気管 １１・・・・・・消音室１
２・・・・・・連通孔 １３・・・・・・溶着座才２
図
才り図FIG. 1 is a sectional view of a silencer obtained by the present invention, and FIG.
The figure is a cross-sectional view of a conventional muffler. 10... Ventilation pipe 11... Sound deadening room 1
2...Communication hole 13...Welding seat 2
illustrious figure
Claims (1)
けた通気管とを、ブロー成形により形成し、通気管の溶
着座の内部に連通孔を穿設し、そして消音室の上端縁と
通気管の溶着座とを溶着し一体化して成る樹脂製消音器
の製造方法。A cup-shaped silencing chamber and a vent pipe having an annular protruding weld seat on the side wall are formed by blow molding, a communication hole is bored inside the weld seat of the vent pipe, and the upper edge of the silencing chamber is formed by blow molding. A method of manufacturing a resin silencer by welding and integrating a welding seat of a ventilation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62133989A JPS63298398A (en) | 1987-05-29 | 1987-05-29 | Manufacture of resin-made silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62133989A JPS63298398A (en) | 1987-05-29 | 1987-05-29 | Manufacture of resin-made silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63298398A true JPS63298398A (en) | 1988-12-06 |
Family
ID=15117783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62133989A Pending JPS63298398A (en) | 1987-05-29 | 1987-05-29 | Manufacture of resin-made silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63298398A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0437522A (en) * | 1990-04-25 | 1992-02-07 | Toyoda Gosei Co Ltd | Manufacture of hose for air cleaner |
| JP2015212469A (en) * | 2014-05-02 | 2015-11-26 | 大成建設株式会社 | Sound absorption floor structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6095120A (en) * | 1983-10-31 | 1985-05-28 | Tsuchiya Mfg Co Ltd | Manufacturing method of resonance type muffler made of synthetic resin |
-
1987
- 1987-05-29 JP JP62133989A patent/JPS63298398A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6095120A (en) * | 1983-10-31 | 1985-05-28 | Tsuchiya Mfg Co Ltd | Manufacturing method of resonance type muffler made of synthetic resin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0437522A (en) * | 1990-04-25 | 1992-02-07 | Toyoda Gosei Co Ltd | Manufacture of hose for air cleaner |
| JP2015212469A (en) * | 2014-05-02 | 2015-11-26 | 大成建設株式会社 | Sound absorption floor structure |
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