JPH0225970Y2 - - Google Patents
Info
- Publication number
- JPH0225970Y2 JPH0225970Y2 JP1984186954U JP18695484U JPH0225970Y2 JP H0225970 Y2 JPH0225970 Y2 JP H0225970Y2 JP 1984186954 U JP1984186954 U JP 1984186954U JP 18695484 U JP18695484 U JP 18695484U JP H0225970 Y2 JPH0225970 Y2 JP H0225970Y2
- Authority
- JP
- Japan
- Prior art keywords
- annular
- mandrel
- packing
- annular step
- circumferential surface
- 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
- 238000012856 packing Methods 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 15
- 230000002093 peripheral effect Effects 0.000 description 7
- 241000270295 Serpentes Species 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、略Ｕ字状の断面形状を呈する環状体
に成形され、例えば、ピストン及びシリンダ、ピ
ストンロツド及びシリンダーカバ或はスウイーブ
ルジヨイントのセンターシヤフト及びハウジング
のように、互いに同芯に組み合わされて軸線方向
の相対往復運動或は相対回転運動をなす２部材間
の密封作用をなすパツキングの製造装置に関す
る。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is formed into an annular body having a substantially U-shaped cross section, and is used, for example, in pistons and cylinders, piston rods and cylinder covers, or swivel joints. The present invention relates to a packing manufacturing device that performs a sealing action between two members, such as a center shaft and a housing, which are combined concentrically with each other to make relative reciprocating motion or relative rotational motion in the axial direction.
（従来の技術）
従来、第１図に例示するように、蛇の目形状を
呈する径方向部１４並びに該径方向部１４から軸
線方向に伸びた外側リツプ１０及び内側リツプ１
１を有して略Ｕ字状の断面形状を呈する環状体に
成形され、相対往復運動又は相対回転運動をなす
２部材間の隙間を密封するために使用される合成
樹脂材料製のパツキング６の製作は、棒状又は管
状の素材に切削加工を施す方法によつてなされて
いた。(Prior Art) Conventionally, as illustrated in FIG. 1, a radial portion 14 having a snake's eye shape, an outer lip 10 and an inner lip 1 extending in the axial direction from the radial portion 14 have been used.
1, the packing 6 is made of a synthetic resin material and is formed into an annular body having a substantially U-shaped cross-sectional shape, and is used to seal a gap between two members that make relative reciprocating motion or relative rotational motion. They were manufactured by cutting a rod-shaped or tubular material.
（考案が解決しようとする問題点）
上記した切削工程を用いる従来の技術による製
造手段は、製作工程が煩雑であるばかりでなく、
装着対象部材の外周面及び内周面に対する締め代
の設定が難しいために、製作作業が非能率的であ
り、更に、この種の製造手段によつて製作された
パツキングは、比較的に高温下で使用された場合
に、摺動するリツプの弾性率の低減による密封機
能の低下を招き易いので、被密封流体の漏洩を惹
起する傾向を有していた。(Problems to be solved by the invention) The conventional manufacturing method using the above-mentioned cutting process not only has a complicated manufacturing process;
The manufacturing process is inefficient because it is difficult to set the tightening margin for the outer and inner peripheral surfaces of the parts to be installed.Furthermore, packing manufactured by this type of manufacturing method cannot be used at relatively high temperatures. When used in a sealed lip, the sealing function tends to be deteriorated due to a reduction in the elastic modulus of the sliding lip, which tends to cause leakage of the fluid to be sealed.
（問題点を解決するための手段）
本考案は、上記した従来の製造手段によるパツ
キングにおける問題点を考慮して、予め略蛇の目
形状に形成された素材を曲げ加工することによつ
て、略Ｕ字状の断面形状を呈する合成樹脂材料製
パツキングを成形し得る製造装置を提示するもの
である。(Means for Solving the Problems) In consideration of the problems in packing by the conventional manufacturing means described above, the present invention has been developed by bending a material that has been previously formed into an approximately snake-eye shape. The present invention presents a manufacturing apparatus capable of molding packing made of synthetic resin material and having a letter-shaped cross-sectional shape.
すなわち、本考案は、略円柱形状を呈して製作
対象パツキングの内径寸法に対応する外径寸法を
備え、先細で先端部の外径寸法が蛇の目形状素材
の内径寸法よりも小さなテーパー外周面を上端部
に形成されるとともに、環状段部を下端部に形成
された心棒と、略円筒形状を呈してパツキングの
外径寸法に対応する内径寸法を備え、末広がりで
先端部の内径寸法が蛇の目形状素材の外径寸法よ
りも大きなテーパー内周面を上端部に形成される
とともに、環状段部を下端部に形成され、前記心
棒との間に、パツキングの径方向部の幅寸法に対
応する環状隙間を形成する加熱シリンダとを組み
合せ、略円筒形状を呈し、前記加熱シリンダの環
状段部に係合する環状段部を上端部に形成された
冷却シリンダによつて前記加熱シリンダを支えさ
せ、更に、略凸字状の断面形状を呈し、前記心棒
の環状段部と係合する環状段部を下端中央部に形
成されるとともに、前記冷却シリンダの下端部と
係合する環状段部を下端外周部に形成された支持
台によつて、前記心棒及び冷却シリンダを支えさ
せ、略円筒形状を呈してパツキングの径方向幅寸
法に対応する厚みを備え、パツキングの環状溝の
形状に対応する環状突起を先端部に形成された円
筒状ピストンを前記した心棒及び加熱シリンダ間
の環状隙間内へ挿入する構成となすものである。 That is, the present invention has a substantially cylindrical shape and has an outer diameter dimension corresponding to the inner diameter dimension of the packing to be manufactured, and has a tapered outer circumferential surface at the upper end where the outer diameter dimension at the tip is smaller than the inner diameter dimension of the snake-like material. The material has a mandrel with an annular step formed at its lower end, an approximately cylindrical shape, an inner diameter corresponding to the outer diameter of the packing, and an inner diameter that widens at the end and has a snake's-eye shape at the tip. A tapered inner circumferential surface larger than the outer diameter of the packing is formed at the upper end, an annular step is formed at the lower end, and an annular gap corresponding to the width of the radial part of the packing is formed between the mandrel and the mandrel. The heating cylinder is combined with a heating cylinder forming a substantially cylindrical shape, and the heating cylinder is supported by a cooling cylinder formed at an upper end portion of the annular step portion that engages with the annular step portion of the heating cylinder, and further, An annular step that has a substantially convex cross-sectional shape and engages with the annular step of the mandrel is formed at the center of the lower end, and an annular step that engages with the lower end of the cooling cylinder is formed on the outer periphery of the lower end. The mandrel and the cooling cylinder are supported by a support base formed in the packing, which has a substantially cylindrical shape, has a thickness corresponding to the radial width dimension of the packing, and has an annular protrusion corresponding to the shape of the annular groove of the packing. The cylindrical piston formed at the tip is inserted into the annular gap between the aforementioned mandrel and the heating cylinder.
上記した本考案の製造装置によるパツキングの
製作は、蛇の目形状の素材を成形する工程、該蛇
の目形状素材を心棒のテーパー外周面及び加熱シ
リンダのテーパー内周面上に載置する工程及びピ
ストンを押し下げて蛇の目形状素材を押圧する工
程によつてなされる。 The production of packing using the manufacturing apparatus of the present invention described above includes the steps of forming a snake-eye-shaped material, placing the snake-eye-shaped material on the tapered outer circumferential surface of the mandrel and the tapered inner circumferential surface of the heating cylinder, and pressing down the piston. This is done by pressing the snake-eye shaped material.
（作用）
上記した構成を備えた本考案のパツキングの製
造装置による製作時には、円筒状ピストンによつ
て蛇の目形状素材が押圧された際に、心棒のテー
パー外周面及び加熱シリンダのテーパー内周面
が、蛇の目形状素材の内周部及び外周部を支えて
曲げ変形させ、次いで、心棒の外周面及び加熱シ
リンダの内周面並びに円筒状ピストンの環状突起
が、互いに協働してパツキングの内側リツプ及び
外側リツプを形成させる。(Function) During production using the packing manufacturing apparatus of the present invention having the above-described configuration, when the snake-eye shaped material is pressed by the cylindrical piston, the tapered outer circumferential surface of the mandrel and the tapered inner circumferential surface of the heating cylinder are , the inner and outer circumferential parts of the snake-eye shaped material are supported and bent and deformed, and then the outer circumferential surface of the mandrel, the inner circumferential surface of the heating cylinder, and the annular protrusion of the cylindrical piston cooperate with each other to form the inner lip and the outer circumferential part of the packing. Form an outer lip.
（実施例）
第２図の実施例においては、略円柱形状を呈
し、先細で小径先端の外径寸法を蛇の目形状素材
１の内径寸法よりも小さく設定されたテーパー外
周面７を上端部に形成されるとともに、環状段部
を下端部に形成された心棒２と、略円筒形状を呈
し、末広がりで大径先端の内径寸法を蛇の目形状
素材１の外径寸法よりも大きく設定されたテーパ
ー内周面８を上端部に形成された加熱シリンダ３
とが、同芯に組合わされてパツキング６の径方向
部１４と略同等の径方向幅寸法を示す環状隙間５
を形成し、円筒形状を呈してパツキング６の環状
溝に対応する形状に設定された環状突起１２を有
する円筒状ピストン９が、環状隙間５内へ挿入さ
れ、略円筒形状を呈し、加熱シリンダの環状段部
に係合する環状段部を上端部に形成された冷却シ
リンダ４によつて、加熱シリンダ３が支えられ、
更に、略凸字状の断面形状を呈し、心棒２の環状
段部と係合する環状段部を下端中央部に形成され
るとともに、冷却シリンダ４の下端部と係合する
環状段部を下端外周部に形成された支持台１５に
よつて、断熱リング１３を介挿された心棒２及び
加熱シリンダ３が支えられている。(Embodiment) In the embodiment shown in FIG. 2, a tapered outer circumferential surface 7 is formed at the upper end, which has a substantially cylindrical shape and has a tapered, small-diameter tip whose outer diameter is smaller than the inner diameter of the snake-eye shaped material 1. At the same time, the mandrel 2 has an annular step formed at its lower end, and the tapered inner periphery has a substantially cylindrical shape, widens at the end, and has an inner diameter at a large diameter tip larger than the outer diameter of the snake's eye-shaped material 1. Heating cylinder 3 formed with surface 8 at its upper end
and an annular gap 5 which are concentrically combined and have a radial width dimension approximately equal to that of the radial portion 14 of the packing 6.
A cylindrical piston 9 having a cylindrical shape and an annular protrusion 12 set in a shape corresponding to the annular groove of the packing 6 is inserted into the annular gap 5, has a substantially cylindrical shape, and has an annular projection 12 corresponding to the annular groove of the packing 6. The heating cylinder 3 is supported by the cooling cylinder 4, which has an annular step portion formed at its upper end that engages with the annular step portion;
Further, an annular step that has a substantially convex cross-sectional shape and engages with the annular step of the mandrel 2 is formed at the center of the lower end, and an annular step that engages with the lower end of the cooling cylinder 4 is formed at the lower end. The mandrel 2 and the heating cylinder 3 with the heat insulating ring 13 inserted therein are supported by a support base 15 formed on the outer periphery.
（考案の効果）
本考案によるパツキング製造装置が、上記した
ように、略円柱形状を呈して製作対象パツキング
の内径寸法に対応する外径寸法を備え、先細のテ
ーパー外周面を上端部に形成された心棒と、略円
筒形状を呈してパツキングの外径寸法に対応する
内径寸法を備え、末広がりのテーパー内周面を上
端部に形成され、パツキングの径方向部の幅寸法
に対応する環状隙間を前記心棒との間に形成する
加熱シリンダとを組合せ、略円筒形状を呈する冷
却シリンダによつて前記加熱シリンダを支え、更
に、略凸字状の断面形状を呈する支持台によつ
て、前記心棒及び冷却シリンダを支え、略円筒形
状を呈してパツキングの径方向の幅寸法に対応す
る厚みを備え、パツキングの環状溝の形状に対応
する環状突起を先端部に形成されたピストンを前
記した心棒及び加熱シリンダ間の環状隙間内へ挿
入される構成を備えていることにより、予め用意
された蛇の目形状素材を心棒のテーパー外周面及
び加熱シリンダのテーパー内周面上に載置して円
筒状ピストンを押し下げるだけで、心棒のテーパ
ー外周面及び加熱シリンダのテーパー内周面によ
つてパツキングの内側リツプ及び外側リツプが折
り曲げられ、続いて心棒の外周面及び加熱シリン
ダの内周面並びに円筒状ピストンの環状突起によ
つてパツキングのＵ字状断面形状が形成されるの
で、工程が単純であつて製作作業が能率的であ
り、更に、成形完了時にスプリングバツクが生起
されるので、内周側及び外周側に適量の締め代が
設定される。(Effects of the invention) As described above, the packing manufacturing apparatus according to the invention has a substantially cylindrical shape, has an outer diameter corresponding to the inner diameter of the packing to be manufactured, and has a tapered outer peripheral surface formed at the upper end. It has a substantially cylindrical shape with an inner diameter that corresponds to the outer diameter of the packing, a tapered inner peripheral surface that widens toward the end, and an annular gap that corresponds to the width of the radial part of the packing. A heating cylinder formed between the mandrel and the mandrel is combined, the heating cylinder is supported by a cooling cylinder having a substantially cylindrical shape, and a supporting base having a substantially convex cross-sectional shape is used to support the mandrel and the mandrel. A mandrel supporting the cooling cylinder, having a substantially cylindrical shape, having a thickness corresponding to the radial width dimension of the packing, and having a piston formed at its tip with an annular protrusion corresponding to the shape of the annular groove of the packing, and a heating rod. By having a structure that is inserted into the annular gap between the cylinders, a pre-prepared snake-eye shaped material is placed on the tapered outer peripheral surface of the mandrel and the tapered inner peripheral surface of the heating cylinder to push down the cylindrical piston. At this point, the inner and outer lips of the packing are bent by the tapered outer circumferential surface of the mandrel and the tapered inner circumferential surface of the heating cylinder, and then the outer circumferential surface of the mandrel, the inner circumferential surface of the heating cylinder, and the annular protrusion of the cylindrical piston are bent. Since the U-shaped cross-sectional shape of the packing is formed by this process, the process is simple and the manufacturing work is efficient.Furthermore, since spring back is generated when the molding is completed, there is a An appropriate amount of tightening allowance is set.
第１図は、本考案によるパツキング製造装置の
製作対象パツキングの一例の断面図、第２図は、
本考案の一実施例の断面図である。
１……蛇の目形状素材、２……心棒、３……加
熱シリンダ、４……冷却シリンダ、５……環状隙
間、６……パツキング、７……テーパー外周面、
８……テーパー内周面、９……円筒状ピストン、
１０……外側リツプ、１１……内側リツプ、１２
……環状突起、１３……断熱リング、１４……径
方向部、１５……支持台。
FIG. 1 is a sectional view of an example of the packing to be manufactured by the packing manufacturing apparatus according to the present invention, and FIG.
FIG. 1 is a sectional view of an embodiment of the present invention. 1... Snake-eye shaped material, 2... Mandrel, 3... Heating cylinder, 4... Cooling cylinder, 5... Annular gap, 6... Packing, 7... Tapered outer peripheral surface,
8... Tapered inner peripheral surface, 9... Cylindrical piston,
10...Outer lip, 11...Inner lip, 12
... Annular projection, 13 ... Heat insulation ring, 14 ... Radial direction part, 15 ... Support stand.
Claims (1)
４の内外両端部から略軸線方向へ伸びた外側リツ
プ１０及び内側リツプ１１を備えて略Ｕ字状の断
面形状を呈するパツキング６の製造装置で、略円
柱形状を呈して前記径方向部１４の内径寸法に対
応する外形寸法を備え、先細のテーパー外周面７
を上端部に形成されるとともに、環状段部を下端
部に形成された心棒２と、略円筒形状を呈して前
記径方向部１４の外径寸法に対応する内径寸法を
備え、末広がりのテーパー内周面８を上端部に形
成されるとともに、環状段部を下端部に形成さ
れ、前記心棒２との間に環状隙間５を形成する加
熱シリンダ３と、略円筒形状を呈して前記パツキ
ング６の環状溝に対応する環状突起１２を先端部
に形成されて前記環状隙間５内へ挿入される円筒
状ピストン９と、略円筒形状を呈し、前記加熱シ
リンダ３の環状段部に係合する環状段部を上端部
に形成された冷却シリンダ４と、略凸字状の断面
形状を呈し、前記心棒２の環状段部及び前記冷却
シリンダ４の下端部と係合する環状段部を備えて
前記心棒２及び前記冷却シリンダ４を支える支持
台１５とを有するパツキングの製造装置。 Snake-eye-shaped radial portion 14 and the radial portion 1
This is a manufacturing device for a packing 6 which has a substantially U-shaped cross-sectional shape and is provided with an outer lip 10 and an inner lip 11 extending substantially in the axial direction from both the inner and outer ends of the packing 6. A tapered outer circumferential surface 7 with an outer dimension corresponding to the inner diameter dimension.
is formed at the upper end thereof, and an annular stepped portion is formed at the lower end thereof, and the mandrel 2 has a substantially cylindrical shape and has an inner diameter dimension corresponding to the outer diameter dimension of the radial direction portion 14, and a tapered inner shaft which widens at the end. The heating cylinder 3 has a circumferential surface 8 at its upper end and an annular step at its lower end, forming an annular gap 5 between it and the mandrel 2; a cylindrical piston 9 having an annular protrusion 12 formed at its tip that corresponds to the annular groove and inserted into the annular gap 5; and an annular step having a substantially cylindrical shape and engaging with the annular step of the heating cylinder 3. The mandrel includes a cooling cylinder 4 formed at its upper end, and an annular step having a substantially convex cross-sectional shape and engaging with the annular step of the mandrel 2 and the lower end of the cooling cylinder 4. 2 and a support stand 15 for supporting the cooling cylinder 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984186954U JPH0225970Y2 (en) | 1984-12-10 | 1984-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984186954U JPH0225970Y2 (en) | 1984-12-10 | 1984-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61101150U JPS61101150U (en) | 1986-06-27 |
| JPH0225970Y2 true JPH0225970Y2 (en) | 1990-07-16 |
Family
ID=30744421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984186954U Expired JPH0225970Y2 (en) | 1984-12-10 | 1984-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0225970Y2 (en) |
-
1984
- 1984-12-10 JP JP1984186954U patent/JPH0225970Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61101150U (en) | 1986-06-27 |
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