JP3531634B2 - Resin molding method and apparatus - Google Patents
Resin molding method and apparatusInfo
- Publication number
- JP3531634B2 JP3531634B2 JP2001285443A JP2001285443A JP3531634B2 JP 3531634 B2 JP3531634 B2 JP 3531634B2 JP 2001285443 A JP2001285443 A JP 2001285443A JP 2001285443 A JP2001285443 A JP 2001285443A JP 3531634 B2 JP3531634 B2 JP 3531634B2
- Authority
- JP
- Japan
- Prior art keywords
- insert
- core
- resin
- cavity
- molded product
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【発明の属する技術分野】本発明は、樹脂成形方法とそ
の装置に関するもので、特に電気掃除機の吸込部に組み
込まれる回転ブラシ用軸体を射出成形するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molding method and an apparatus therefor, and more particularly to injection molding a rotary brush shaft incorporated in a suction portion of an electric vacuum cleaner.
【０００２】[0002]
【従来の技術】従来、電気掃除機の吸込部には、塵埃等
の除去に威力を発揮する回転ブラシが組み込まれてい
る。この回転ブラシは、一般的に螺旋溝が形成された軸
体とこの軸体の螺旋溝に装着されたブラシによって構成
されている。また、軸体は、一般的にアルミニウムで形
成されていて、このアルミニウム製の軸体は、アルミニ
ウムを押し出し成形した後に、捩じり加工を施した方法
が一般的であった。2. Description of the Related Art Conventionally, a rotary brush, which is effective in removing dust and the like, is incorporated in a suction portion of an electric vacuum cleaner. This rotating brush is generally composed of a shaft body having a spiral groove formed therein and a brush mounted in the spiral groove of the shaft body. Further, the shaft body is generally formed of aluminum, and the aluminum shaft body is generally formed by extruding aluminum and then twisting the aluminum body.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の方法では、アルミニウムを押し出し成形した後に、捩
じり加工を施すために、反りや螺旋溝部の変形が生じ品
質の均一性を得ることができない等、製造加工が難しい
問題がある。また、樹脂に比べ高価で重量が重いと言っ
た問題がある。However, in the above-mentioned conventional method, since the aluminum is extruded and then twisted, the warpage and the deformation of the spiral groove portion occur, and the uniformity of the quality cannot be obtained. However, there is a problem that manufacturing processing is difficult. There is also a problem that it is more expensive and heavier than resin.
【０００４】本発明は、上記課題を解決するもので、螺
旋状溝部を有する合成樹脂からなる成形品に、反りや収
縮等を発生させず、螺旋状溝部を全長にわたって均一で
高い寸法精度を確保して射出成形できる樹脂成形方法と
その装置を提供することを目的とする。The present invention is to solve the above-mentioned problems. A molded product made of a synthetic resin having a spiral groove portion does not cause warping or shrinkage, and the spiral groove portion is kept uniform over its entire length and high in dimensional accuracy. It is an object of the present invention to provide a resin molding method and an apparatus therefor which can be injection molded.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明は、突き合わせ面から型開きし、成形品の表面
に異なる方向の螺旋形状溝部を形成するキャビティイン
サートとコアインサートと、前記キャビティインサート
及び前記コアインサートを回転方向に回転可能とする回
転体とを用いて樹脂を成形する樹脂成形方法において、
前記溝部の螺旋形状のリード比に合わせて、成形品を回
転させることなく、前記キャビティインサート及びコア
インサートの各々を円周方向に回転させながら型開きす
ることで、前記成形品を離型させる樹脂成形方法で、コ
ンパクトで簡易な金型構造で螺旋形状溝部を有した成形
品を樹脂成形で精度良く形成でき、かつ安価に製造でき
る。In order to achieve the above object, the present invention provides a cavity insert and a core insert, which are mold-opened from an abutting surface and form spiral grooves in different directions on the surface of a molded article, and the cavity. In a resin molding method of molding a resin using a rotating body that allows the insert and the core insert to rotate in a rotation direction,
A resin for releasing the molded product by opening the mold while rotating each of the cavity insert and the core insert in the circumferential direction without rotating the molded product in accordance with the spiral-shaped lead ratio of the groove portion. With the molding method , a molded product having a spiral groove portion with a compact and simple mold structure can be accurately formed by resin molding and can be manufactured at low cost.
【０００６】[0006]
【発明の実施の形態】本発明の請求項１記載の発明は、
突き合わせ面から型開きし、成形品の表面に異なる方向
の螺旋形状溝部を形成するキャビティインサートとコア
インサートと、前記キャビティインサート及び前記コア
インサートを回転方向に回転可能とする回転体とを用い
て樹脂を成形する樹脂成形方法において、前記溝部の螺
旋形状のリード比に合わせて、成形品を回転させること
なく、前記キャビティインサート及びコアインサートの
各々を円周方向に回転させながら型開きすることで、前
記成形品を離型させる樹脂成形方法で、コンパクトで簡
易な金型構造で螺旋形状溝部を有した成形品を樹脂成形
で精度良く形成でき、かつ安価に製造できる。BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
A cavity insert and a core insert, which are opened from the abutting surface and form spiral groove portions in different directions on the surface of the molded product, and the cavity insert and a rotating body that allows the core insert to rotate in the rotation direction are used.
Te in the resin molding method for molding the resin in accordance with the read ratio of the groove of the spiral shape, without rotating the molded article, to open the mold while rotating each of the cavity insert and core insert in the circumferential direction And before
With the resin molding method of releasing the molded product from the mold, a molded product having a spiral groove portion with a compact and simple mold structure can be accurately formed by resin molding and can be manufactured at low cost.
【０００７】本発明の請求項２記載の発明は、請求項１
の発明において、型開き時にキャビティインサートを内
設するキャビティは動かず、コアインサートを内設する
コアが、前記コアインサートで成形品を保持した状態で
可動し、その際キャビティインサートが円周方向に回転
することでキャビ側の成形品は離型され、その後、コア
側に設けた突き出し体により成形品を突き出すことで、
コアインサートを円周方向に回転させながら、成形品を
突き出し離型させるもので、螺旋形状溝部を有した成形
品の反り等の発生を抑え、離型不良のない成形を行うこ
とができ、かつ安価に製造できる。The invention according to claim 2 of the present invention is the invention according to claim 1.
In the invention of claim 1, the cavity containing the cavity insert does not move when the mold is opened, and the core containing the core insert moves while the molded product is held by the core insert. By rotating, the molded product on the cabinet side is released, and then by ejecting the molded product by the protruding body provided on the core side,
While rotating the core insert in the circumferential direction, the molded product is ejected and released from the mold, and it is possible to suppress the occurrence of warpage of the molded product having the spiral groove portion and perform molding without a mold release defect, and It can be manufactured at low cost.
【０００８】本発明の請求項３記載の発明は、請求項１
または請求項２の発明において、突き合わせ面におい
て、傾斜面を備えた突起部或いは溝部をそれぞれ有する
キャビティインサートとコアインサートとを用いて樹脂
を成形する樹脂成形方法において、成形品の螺旋形状溝
部の合わせが一致する位置で、前記突起部と前記溝部と
が互いに嵌まり合うようにしたもので、成形品のキャビ
ティインサートとコアインサートの突き合わせ面での螺
旋形状溝部の位置合わせが自動的に調整される。The invention according to claim 3 of the present invention is the invention according to claim 1.
Or In the invention of claim 2, pushing Align surface Odor
A Te, projections with a inclined slope or the groove portion, respectively
Resin with cavity insert and core insert
In the resin molding method of molding, the protrusion and the groove portion are provided at a position where the spiral groove portions of the molded product are aligned with each other.
Are fitted to each other, and the position of the spiral groove portion at the abutting surfaces of the cavity insert and the core insert of the molded product is automatically adjusted.
【０００９】本発明の請求項４記載の発明は、請求項１
〜３の発明において、成形品の端面に設けた２点のゲー
トより樹脂を流して成形するもので、１点ゲートの様に
樹脂が円筒軸に対し片寄って流れることなく、円筒軸に
対し樹脂が回りこんで均一に流れ、型への充填を良く
し、掃除機の回転ブラシ用軸体の反りや寸法精度及び外
観品質を良くすることができる。また、端面から樹脂を
流すことで、ガラス入り樹脂材料の場合でのガラス繊維
の配向の向きが一方向となり、材料が流れ易く、かつ成
形品の剛性を高めることができる。The invention according to claim 4 of the present invention is the invention according to claim 1.
In the inventions of 3 to 3, the two points provided on the end surface of the molded product
Molded by flowing resin from the gut, the resin does not flow eccentrically to the cylinder axis like a one-point gate, but the resin wraps around the cylinder axis and flows uniformly, improving the filling into the mold, The warp, dimensional accuracy, and appearance quality of the rotary brush shaft of the vacuum cleaner can be improved. Further, by flowing the resin from the end face, the orientation of the glass fibers in the case of the resin material containing glass becomes one direction, the material easily flows, and the rigidity of the molded product can be increased.
【００１０】本発明の請求項５記載の発明は、請求項１
〜４の発明において、回転体をエアーで冷却するように
したことにより、回転体の焼き付け防止を図り、回転動
作をスムーズにし成形品の成形品質を安定させると共
に、金型の耐久寿命を上げる。The invention according to claim 5 of the present invention is the invention according to claim 1.
In the inventions of to 4, since the rotating body is cooled by air, the rotating body is prevented from being burned, the rotating operation is smoothed, the molding quality of the molded product is stabilized, and the durable life of the mold is extended.
【００１１】本発明の請求項６記載の発明は、請求項１
〜５の発明において、キャビティインサート及びコアイ
ンサートの中央を貫通するように設けられ、成形品の内
側を形成し、一部は断面多角形状で、他の部分は断面丸
形状なる固定ピンを用いて樹脂を成形する樹脂成形方法
において、前記キャビティインサート側の成形品を引き
出す際に、前記コアインサートが回転するのを、前記断
面多角形状部にて回り止めするもので、型開き時にコア
側が成形品を保持した状態で可動し、キャビティインサ
ート側の成形品を引き出す際に、コアインサートが円周
方向に回転するのを固定ピンに設けた断面多角形状が回
り止めの機能を果たし、成形品をスムーズに離型させる
ことができる。The invention according to claim 6 of the present invention is the invention according to claim 1.
5 to 5, the cavity insert and the core eye
It is installed so as to penetrate through the center of the insert and
Forming a side, part of which has a polygonal cross section and the other part of which has a round cross section.
Molding method for molding resin using shaped fixing pin
, Pull the molded product on the cavity insert side.
When the core insert is rotated,
It is a rotation stopper with a polygonal surface, it moves while the mold is held on the core side when the mold is opened, and the core insert is fixed to rotate in the circumferential direction when the molded product on the cavity insert side is pulled out. The polygonal cross-section provided on the pin serves as a detent function, and the molded product can be smoothly released from the mold.
【００１２】本発明の請求項７記載の発明は、請求項１
〜５の発明において、キャビティインサート及びコアイ
ンサートの中央を貫通するように設けられ、成形品の内
側を形成し、表面に突起部を１箇所以上有する固定ピン
を用いて樹脂を成形する樹脂成形方法において、前記キ
ャビティインサート側の成形品を引き出す際に、前記コ
アインサートが回転するのを、前記突起部にて回り止め
するもので、型開き時にコア側が成形品を保持した状態
で可動し、キャビティインサート側の成形品を引き出す
際に、コアインサートが円周方向に回転するのを固定ピ
ンに設けた突起部が回り止めの機能を果たし、成形品を
スムーズに離型させることができる。The invention according to claim 7 of the present invention is claim 1
5 to 5, the cavity insert and the core eye
It is installed so as to penetrate through the center of the insert and
Pin that forms the side and has one or more protrusions on the surface
In the resin molding method for molding a resin using
When pulling out the molded product on the cavity insert side,
Prevents the insert from rotating with the protrusion
When the mold is opened, the core side moves while holding the molded product, and when pulling out the molded product on the cavity insert side, the protrusion provided on the fixing pin rotates the core insert in the circumferential direction. It functions as a stopper, allowing the molded product to be released smoothly.
【００１３】本発明の請求項８記載の発明は、請求項１
〜７の発明において、キャビティインサート及びコアイ
ンサートの中央を貫通するように設けられ、成形品の内
側を形成し、前記キャビティ側と前記コア側とにそれぞ
れ分割され、端部に傾斜を備えた凹部及び凸部を互いに
有する固定ピンを用いて樹脂を成形する樹脂成形方法に
おいて、前記凹部と前記凸部とが成形時に互いに嵌まり
合うようにしたことにより、凹部及び凸部に設けた傾斜
が誘いになって確実にピンの軸合わせができ、成形品の
同軸度がでる。The invention according to claim 8 of the present invention is claim 1
7 to 7, the cavity insert and the core insert are provided.
It is installed so as to penetrate through the center of the insert and
Side is formed, and the cavity side and the core side are respectively formed.
It is divided into two parts.
For resin molding method to mold resin using the fixed pin
Since the concave portion and the convex portion are fitted to each other at the time of molding, the inclination provided in the concave portion and the convex portion can be guided to surely align the pins, and the coaxiality of the molded product can be obtained. Get out.
【００１４】本発明の請求項９記載の発明は、請求項８
の発明において、キャビティ側の固定ピンとコア側の固
定ピンとは、前記キャビティ側にて嵌合することによ
り、中央部（金型突き合わせ面）での嵌合に比較して、
中央部での固定ピン剛性を高め撓みにくくすることがで
き、かつキャビティ側からの固定ピンの抜きテーパ径の
太い位置で凹部形状を形成できるため、嵌合状態での固
定ピンの剛性が増し、軸心がずれにくく折れ等の損傷を
防ぐことができる。The invention according to claim 9 of the present invention is the invention according to claim 8.
In the invention, the solid <br/> constant pin fixed pin and the core side of the cavity side, by fitting in the cavity side, in comparison with the fitting in the central portion (mold abutting surface) ,
The rigidity of the fixing pin in the central part can be increased to prevent it from bending easily, and the concave shape can be formed at the position where the taper diameter of the fixing pin from the cavity side is large, so the rigidity of the fixing pin in the fitted state increases. It is possible to prevent the shaft center from shifting and prevent damage such as breaking.
【００１５】本発明の請求項１０記載の発明は、請求項
１〜９の発明において、キャビティインサート及びコア
インサートの中央を貫通するように設けられ、成形品の
内側を形成し、前記キャビティ側と前記コア側とにそれ
ぞれ分割され、中央に貫通穴を有する固定ピンを用いて
樹脂を成形する樹脂成形方法において、成形時に双方の
固定ピンが嵌合した時にのみ、前記貫通穴に冷却水が循
環するようにしたことにより、成形品を中心部から冷却
することが可能となり、成形品の反りを防止し離型不良
のない成形品を得ることができると共に、短い成形サイ
クルで成形可能となり、生産性向上を図ることができ
る。According to a tenth aspect of the present invention, in addition to the inventions of the first to ninth aspects, a cavity insert and a core are provided.
It is provided so as to penetrate the center of the insert and
Forming the inner side, and forming it on the cavity side and the core side
Using a fixed pin that is divided into each and has a through hole in the center
In the resin molding method for molding the resin, only when the fixing pins of the molding during bi-lateral is fitted, by the cooling water was circulated prior SL through hole, it is possible to cool the molded article from the center As a result, it is possible to prevent the warp of the molded product and obtain a molded product having no mold release defect, and it is possible to mold in a short molding cycle, and productivity can be improved.
【００１６】本発明の請求項１１記載の発明は、請求項
１〜９の発明において、キャビティインサート及びコア
インサートの中央を貫通するように設けられ、成形品の
内側を形成し、前記キャビティ側と前記コア側とにそれ
ぞれ分割され、中央に貫通穴を有する固定ピンを用いて
樹脂を成形する樹脂成形方法において、成形時に双方の
固定ピンが嵌合した時にのみ、前記貫通穴にエアーが循
環するようにしたことにより、成形品を中心部から冷却
することが可能となり、成形品の反りを防止し離型不良
のない成形品を得ることができる。また、冷却水方式よ
り設備装置が安くできる。According to an eleventh aspect of the present invention, in addition to the inventions of the first to ninth aspects, a cavity insert and a core are provided.
It is provided so as to penetrate the center of the insert and
Forming the inner side, and forming it on the cavity side and the core side
Using a fixed pin that is divided into each and has a through hole in the center
In the resin molding method for molding the resin, only when the fixing pins of the molding during bi-lateral is fitted, by the air is to circulate before SL through hole, it is possible to cool the molded article from the center As a result, it is possible to prevent the warp of the molded product and obtain a molded product having no mold release defect. In addition, the equipment can be cheaper than the cooling water system.
【００１７】本発明の請求項１２記載の発明は、突き合
わせ面から型開きし、成形品の表面に異なる方向の螺旋
形状溝部を形成するキャビティインサートとコアインサ
ートと、前記キャビティインサート及び前記コアインサ
ートを回転方向に回転可能とする回転体とを備え、前記
溝部の螺旋形状のリード比に合わせて、成形品を回転さ
せることなく、前記キャビティインサート及びコアイン
サートの各々を円周方向に回転させながら型開きする構
成とした樹脂成形装置で、コンパクトで簡易な金型構造
で螺旋形状溝部を有した成形品を樹脂成形で精度良く形
成でき、かつ安価に製造できる。 The invention according to claim 12 of the present invention is a butt joint.
The mold is opened from the mating surface and spirals in different directions are applied to the surface of the molded product.
Cavity insert and core insert that form shaped groove
And the cavity insert and the core insert.
A rotating body that allows the blade to rotate in the rotation direction,
Rotate the molded product according to the spiral lead ratio of the groove.
The cavity insert and core-in without
A structure for opening the mold while rotating each of the saarts in the circumferential direction.
Molded resin molding equipment, compact and simple mold structure
A molded product with a spiral groove is accurately molded by resin molding.
It can be manufactured at low cost.
【００１８】[0018]
【実施例】（実施例１）
以下、本発明の第１の実施例を、図１から図４を用いて
説明する。EXAMPLES Example 1 Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 to 4.
【００１９】図１は本発明の樹脂成形金型によって成形
される成形品である掃除機用回転ブラシ軸体１の一例で
あり、円筒形の成形品の外周部に捩じれ方向の異なる螺
旋形状の溝部２ａ、２ｂを有する。FIG. 1 shows an example of a rotary brush shaft 1 for a vacuum cleaner, which is a molded product molded by a resin molding die of the present invention, and has a spiral shape with different twist directions on the outer peripheral portion of a cylindrical molded product. It has grooves 2a and 2b.
【００２０】図２〜図４は図１の掃除機用回転ブラシ軸
体１を形成する樹脂成形金型を示している。１ａは掃除
機用回転ブラシ軸体１のキャビティ側の成形品、１ｂは
掃除機用回転ブラシ軸体１のコア側の成形品である。３
はキャビティ、４はコア、５はキャビティインサート、
６はコアインサート、７はキャビティインサート５及び
コアインサート６を回転方向に回転させる回転体であ
る。2 to 4 show a resin molding die forming the rotary brush shaft body 1 for a cleaner shown in FIG. Reference numeral 1a is a molded product on the cavity side of the rotary brush shaft 1 for a cleaner, and 1b is a molded product on the core side of the rotary brush shaft 1 for a cleaner. Three
Is a cavity, 4 is a core, 5 is a cavity insert,
Reference numeral 6 is a core insert, and 7 is a rotating body that rotates the cavity insert 5 and the core insert 6 in the rotation direction.
【００２１】８はゲート、９ａはキャビティ側固定ピ
ン、９ｂはコア側固定ピンである。Reference numeral 8 is a gate, 9a is a cavity side fixing pin, and 9b is a core side fixing pin.
【００２２】１０は油圧シリンダーでありコア４に連結
され樹脂成形時においてコア４を開閉可動させ、型の開
閉を行う。その際、キャビティ３は固定されたままであ
り可動はしない。１１は突き出し体であり突き出しシリ
ンダー１２により押されコア側成形品１ｂを突き出して
離型させる。１３は傾斜面突起部、１４は傾斜溝部であ
り、傾斜面突起部１３と傾斜溝部１４が金型突き合わせ
面で、掃除機用回転ブラシ軸体１の螺旋形状溝部２ａ、
２ｂの合わせが一致する位置で自動的に調整して互いに
嵌まり合う様になっている。A hydraulic cylinder 10 is connected to the core 4 to open and close the core 4 during resin molding to open and close the mold. At that time, the cavity 3 remains fixed and is not movable. Reference numeral 11 denotes an ejecting body, which is pushed by the ejecting cylinder 12 to eject the core-side molded product 1b and release it. 13 is an inclined surface protrusion, and 14 is an inclined groove.
Ri, in the inclined beveled protrusion 13 inclined groove portion 14 is surface abutting the mold, the vacuum cleaner rotary brush shaft body 1 spiral shaped groove 2a,
2b is automatically adjusted and fitted into each other at a position where the alignment is the same.
【００２３】以上のような構成の金型において以下に成
形の流れを説明する。In the mold having the above construction, the molding flow will be described below.
【００２４】ゲート８より樹脂をキャビティインサート
５からコアインサート６へ充填した後に、油圧シリンダ
ー１０によりコア４を開く。その際コア４がコア側成形
品１ｂを保持した状態で可動するため、キャビティイン
サート５は回転体７の作用でキャビティ側成形品１ａの
表面に形成される溝部２ａの螺旋形状のリード比に合せ
て回転することでキャビティ側の成形品１ａは離型され
る（図３）。After the resin is filled from the cavity insert 5 to the core insert 6 through the gate 8, the core 4 is opened by the hydraulic cylinder 10. At that time, since the core 4 moves while holding the core-side molded product 1b, the cavity insert 5 is adjusted by the action of the rotating body 7 to match the spiral lead ratio of the groove 2a formed on the surface of the cavity-side molded product 1a. The molded product 1a on the cavity side is released from the mold by rotating it (FIG. 3).
【００２５】次にコア４側に設けた突き出し体１１は突
き出しシリンダー１２によって押し出され、コア側の成
形品１ｂを突くことで、コアインサート６はキャビティ
インサート５と同様に回転し、コア側の成形品１ｂは離
型される（図４）。Next, the ejector 11 provided on the core 4 side is extruded by the ejecting cylinder 12, and the core insert 6 is rotated in the same manner as the cavity insert 5 by ejecting the core-side molded product 1b, and the core-side mold 1 is molded. The product 1b is released (FIG. 4).
【００２６】上記構成による作用は以下の通りである。The operation of the above configuration is as follows.
【００２７】キャビティインサート５及びコアインサー
ト６の各々を掃除機用回転ブラシ軸体１の表面に形成さ
れる溝部２ａ、２ｂの螺旋形状のリード比に合わせて円
周方向に回転させながら掃除機用回転ブラシ軸体１を回
転させず型開きすることによってコンパクトで簡易な金
型構造で螺旋形状溝部を有した掃除機用回転ブラシ軸体
１を樹脂成形で精度良く形成でき、かつ安価に製造でき
る。また、掃除機の回転ブラシ用軸体１の反り等の発生
を抑え、離型不良のない成形を行うことができる。さら
にゲート８の位置を成形品の端面にし、かつ成形品の近
傍でゲート８は分割され、図１の２ｃ、２ｄのように２
点ゲートで成形するようにしたことにより、１点ゲート
の様に樹脂が円筒軸に対し片寄って流れることなく、円
筒軸に対し樹脂が回りこんで均一に流れ、型への充填を
良くし、掃除機用回転ブラシ軸体１の反りや寸法精度及
び外観品質を良くすることができる。また、端面から樹
脂を流すことで、ガラス入り樹脂材料の場合でのガラス
繊維の配向の向きが一方向となり、材料が流れ易く、か
つ成形品の剛性を高めることができる。The cleaning while cavity insert 5 and the groove 2a formed each core insert 6 Vacuum times Utatebu surface of the brush shaft body 1, in accordance with the read ratio 2b spiral shape is rotated in the circumferential direction the vacuum cleaner times Utatebu brush shaft body 1 having a spiral shaped groove with a simple mold structure is compact by the machine for rotating Utatebu brush shaft body 1 to open the mold without rotating can accurately formed by resin molding It can be manufactured at low cost. Further, it is possible to suppress warping of the rotary brush shaft body 1 of the vacuum cleaner and to perform molding without mold release failure. Further, the gate 8 is positioned on the end face of the molded product, and the gate 8 is divided in the vicinity of the molded product.
By molding with a point gate, the resin does not flow eccentrically to the cylinder axis unlike the one point gate, but the resin wraps around the cylinder axis and flows uniformly, improving the filling in the mold, it is possible to improve the warpage and dimensional accuracy and external appearance of the vacuum cleaner for rotating Utatebu brush shaft body 1. Further, by flowing the resin from the end face, the orientation of the glass fibers in the case of the resin material containing glass becomes one direction, the material easily flows, and the rigidity of the molded product can be increased.
【００２８】また、キャビティインサート５及びコアイ
ンサート６が回転方向に回転可能とする回転体７を、図
２の隙間Ａ７ａ、隙間Ｂ７ｂにエアーを流して冷却する
ようにしたことにより、回転体７の焼き付け防止を図
り、回転動作をスムーズにし成形品の成形品質を安定さ
せると共に、金型の耐久寿命を上げる。Further, by rotating the rotating body 7 in which the cavity insert 5 and the core insert 6 are rotatable in the rotating direction by flowing air through the gap A7a and the gap B7b in FIG. Prevents seizure, smoothes the rotation operation, stabilizes the molding quality of molded products, and extends the durable life of the mold.
【００２９】（実施例２）
以下、本発明の第２の実施例を、図５を用いて説明す
る。(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG.
【００３０】図５において、成形品の内側を形成する固
定ピン９ａ、９ｂの形状の一部を断面多角形状１５に
し、他の部分は断面丸形状にしたことにより、型開き時
にコア４側が成形品を保持した状態で可動し、キャビテ
ィインサート５側の成形品引き出す際に、コアインサー
ト６が円周方向に回転するのを固定ピン９ｂに設けた断
面多角形状１５が回り止めの機能を果たし、成形品をス
ムーズに離型させることができる。In FIG. 5, a part of the shape of the fixing pins 9a and 9b forming the inside of the molded product has a polygonal cross section 15 and the other part has a circular cross section, so that the core 4 side is molded when the mold is opened. The cross-sectional polygonal shape 15 provided on the fixing pin 9b functions to prevent rotation of the core insert 6 in the circumferential direction when the molded product on the side of the cavity insert 5 is pulled out while it is movable while holding the product. The molded product can be released smoothly.
【００３１】尚、前記説明では、断面多角形状１５の場
合について説明したが、固定ピンに突起部を設けても同
様の回り止めの機能を果たすことは言うまでもない。In the above description, the case of the polygonal cross-section 15 has been described, but it goes without saying that even if the fixing pin is provided with a protrusion, the same rotation preventing function is fulfilled.
【００３２】（実施例３）
以下、本発明の第３の実施例を、図６を用いて説明す
る。(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG.
【００３３】図６において、固定ピン９をキャビティ側
からの固定ピン９ａとコア側からの固定ピン９ｂに分割
し、互いの固定ピン９ａ、９ｂの端部に傾斜を有した凹
部１７及び凸部１６を設け、成形時に互いに嵌まり合う
様にしたことにより、凹部１７及び凸部１６に設けた傾
斜が誘いになって確実にピンの軸合わせができ、成形品
の同軸度がでる。In FIG. 6, the fixing pin 9 is divided into a fixing pin 9a from the cavity side and a fixing pin 9b from the core side, and a concave portion 17 and a convex portion having an inclination at the ends of the fixing pins 9a and 9b. By providing 16 and engaging with each other at the time of molding, the inclination provided in the concave portion 17 and the convex portion 16 is guided, and the pin can be surely aligned with the axis, and the concentricity of the molded product is obtained.
【００３４】（実施例４）
以下、本発明の第４の実施例を、図７を用いて説明す
る。(Fourth Embodiment) A fourth embodiment of the present invention will be described below with reference to FIG.
【００３５】図７において、キャビティ側からの固定ピ
ン９ａとコア側からの固定ピン９ｂの嵌合位置をキャビ
ティ３側に配置したことにより、中央部（金型突き合わ
せ面）での嵌合に比較して、中央部での固定ピン剛性を
高め撓みにくくすることができ、かつキャビティ側から
の固定ピン９ａの抜きテーパ径の太い位置で凹部１７形
状を形成できるため、嵌合状態での固定ピンの剛性が増
し、軸心がずれにくく折れ等の損傷を防ぐことができ
る。In FIG. 7, the fitting positions of the fixing pin 9a from the cavity side and the fixing pin 9b from the core side are arranged on the cavity 3 side, so that the fitting at the central portion (mold abutting surface) is compared. As a result, the rigidity of the fixing pin in the central portion can be increased to make it difficult to bend, and the recess 17 shape can be formed at a position where the taper diameter of the fixing pin 9a from the cavity side is large. The rigidity of the shaft is increased, and it is possible to prevent the shaft center from shifting and prevent damage such as breaking.
【００３６】（実施例５）
以下、本発明の第５の実施例を、図７を用いて説明す
る。(Fifth Embodiment) A fifth embodiment of the present invention will be described below with reference to FIG.
【００３７】図７において、キャビティ側からの固定ピ
ン９ａとコア側からの固定ピン９ｂの中央に貫通穴１８
を設け、成形時に双方の固定ピン９ａ、９ｂが嵌合した
時にのみ前記貫通穴１８にポンプ（図示せず）を用いて
冷却水１９が循環する様にしたことにより、成形品を軸
方向の中心部から冷却することが可能となり、成形品の
反りを防止し離型不良のない成形品を得ることができる
と共に、短い成形サイクルで成形可能となり、生産性向
上を図ることができる。In FIG. 7, a through hole 18 is formed in the center of the fixing pin 9a from the cavity side and the fixing pin 9b from the core side.
The provided, forming at bi-lateral fixing pins 9a, by cooling water 19 by using a pump (not shown) in the through-hole 18 only when 9b is fitted is the manner circulating axial moldings Since it is possible to cool from the central part, it is possible to prevent warpage of the molded product and obtain a molded product without mold release defects, and it is possible to mold in a short molding cycle, and it is possible to improve productivity.
【００３８】また、成形時に双方の固定ピン９ａ、９ｂ
が嵌合した時にのみ前記貫通穴１８に前記冷却水１９の
代わりにエアーを循環する様にしても、成形品を軸方向
の中心部から冷却することが可能となり、成形品の反り
を防止し離型不良のない成形品を得ることができる。ま
た、冷却水方式より設備装置が安くできる。[0038] In addition, the molding at the time of double-side of the fixing pins 9a, 9b
Even if the air is circulated in the through hole 18 instead of the cooling water 19 only when is fitted, the molded product can be cooled from the center in the axial direction, and the molded product is prevented from warping. It is possible to obtain a molded product having no mold release defect. In addition, the equipment can be cheaper than the cooling water system.
【００３９】（参考例１）
以下、本発明の掃除機用回転ブラシ軸体１の形状に関す
る参考例を、図８を用いて説明する。 Reference Example 1 The shape of the rotary brush shaft 1 for a vacuum cleaner of the present invention will be described below.
A reference example will be described with reference to FIG.
【００４０】図８において、成形品の表面に異なる方向
の螺旋形状溝部を形成するキャビティインサート５とコ
アインサート６において、離型時に成形品にくらい付き
易い溝形状の面の抜きテーパ２１（６箇所の溝共）を他
の面より大きくしたことにより、成形品をスムーズに離
型させることができ離型不良のない成形品を得ることが
できる。In FIG. 8, in the cavity insert 5 and the core insert 6 that form spiral grooves in different directions on the surface of the molded product, the taper 21 (6 places) of the groove-shaped surface that is easily attached to the molded product at the time of mold release. By making the groove (of groove)) larger than the other surfaces, the molded product can be smoothly released from the mold, and a molded product having no mold release defect can be obtained.
【００４１】[0041]
【発明の効果】本発明によれば、螺旋状溝部を有する合
成樹脂からなる成形品に、反りや収縮等を発生させず、
螺旋状溝部を全長にわたって均一で高い寸法精度を確保
して射出成形できる樹脂成形方法とその装置を提供でき
る。According to the present invention, a molded product made of a synthetic resin having a spiral groove portion does not cause warping or shrinkage,
It is possible to provide a resin molding method and apparatus capable of injection molding the spiral groove portion uniformly over the entire length while ensuring high dimensional accuracy.
【図１】本発明の第１の実施例を示す掃除機用回転ブラ
シ軸体を示す図[1] first Vacuum times Utatebu La illustrating an embodiment of the present invention
Diagram showing axial body
【図２】同樹脂成形金型の部分断面図（型閉時）FIG. 2 is a partial sectional view of the resin molding die (when the mold is closed).
【図３】同樹脂成形金型の部分断面図（型開時）FIG. 3 is a partial sectional view of the resin molding die (when the die is opened).
【図４】同樹脂成形金型の部分断面図（成形品離型時）FIG. 4 is a partial cross-sectional view of the same resin molding die (when releasing a molded product).
【図５】本発明の第２の実施例を示す樹脂成形金型の部
分斜視図FIG. 5 is a partial perspective view of a resin molding die showing a second embodiment of the present invention.
【図６】本発明の第３の実施例を示す樹脂成形金型の部
分平面図 FIG. 6 is a partial plan view of a resin molding die showing a third embodiment of the present invention .
【図７】本発明の第４、５の実施例を示す樹脂成形金型
の部分平面図 FIG. 7 is a partial plan view of a resin molding die showing fourth and fifth embodiments of the present invention .
【図８】本発明の第１の参考例を示す樹脂成形金型の部
分斜視図FIG. 8 is a partial perspective view of a resin molding die showing a first reference example of the present invention.
１ 掃除機用回転ブラシ軸体（成形品） ２ａ 螺旋形状溝部 ２ｂ 螺旋形状溝部 ３ キャビティ ４ コア ５ キャビティインサート ６ コアインサート ７ 回転体 ８ ゲート ９ 固定ピン １１ 突き出し体 Rotary brush shaft body for 1 cleaner (molded article) 2a helically shaped groove 2b helically shaped groove part 3 cavity 4 core 5 cavity insert 6 core insert 7 rotator 8 gate 9 fixing pin 11 projecting body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 勝之 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 小川 貴昭 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭50−86556（ＪＰ，Ａ) 特開2001−38741（ＪＰ，Ａ) 特開2001−38780（ＪＰ，Ａ) 特開 平７−241878（ＪＰ，Ａ) 実開 昭58−21419（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 33/00 - 33/76 B29C 39/26 - 39/36 B29C 41/38 - 41/44 B29C 43/36 - 43/42 B29C 43/50,45/26 - 45/44 B29C 45/64 - 45/68,45/73 B29C 49/48 - 49/56 B29C 49/70,51/31 - 51/40 B29C 51/44 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuyuki Ota 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Takaaki Ogawa 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (56) References JP-A-50-86556 (JP, A) JP-A-2001-38741 (JP, A) JP-A-2001-38780 (JP, A) JP-A-7-241878 (JP, A) Sho 58-21419 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 33/00-33/76 B29C 39/26-39/36 B29C 41/38-41/44 B29C 43/36-43/42 B29C 43 / 50,45 / 26-45/44 B29C 45/64-45 / 68,45 / 73 B29C 49/48-49/56 B29C 49 / 70,51 / 31-51 / 40 B29C 51/44
Claims (12)
面に異なる方向の螺旋形状溝部を形成するキャビティイ
ンサートとコアインサートと、前記キャビティインサー
ト及び前記コアインサートを回転方向に回転可能とする
回転体とを用いて樹脂を成形する樹脂成形方法におい
て、前記溝部の螺旋形状のリード比に合わせて、成形品
を回転させることなく、前記キャビティインサート及び
コアインサートの各々を円周方向に回転させながら型開
きすることで、前記成形品を離型させる樹脂成形方法。 1. A cavity insert and a core insert, which are mold-opened from a butt surface and form spiral grooves in different directions on the surface of a molded product, and a rotating body capable of rotating the cavity insert and the core insert in a rotational direction. In the resin molding method of molding resin using and
The mold insert by rotating the cavity insert and the core insert in the circumferential direction according to the spiral lead ratio of the groove without rotating the mold product. Resin molding method.
するキャビティは動かず、コアインサートを内設するコ
アが、前記コアインサートで成形品を保持した状態で可
動し、その際キャビティインサートが円周方向に回転す
ることでキャビ側の成形品は離型され、その後、コア側
に設けた突き出し体により成形品を突き出すことで、コ
アインサートを円周方向に回転させながら、成形品を突
き出し離型させる請求項１記載の樹脂成形方法。 2. When the mold is opened, the cavity in which the cavity insert is installed does not move, and the core in which the core insert is installed moves while the molded product is held by the core insert. The molded product on the cab side is released by rotating it to the mold, and then the molded product is ejected by the protruding body provided on the core side, and the molded product is ejected and released while rotating the core insert in the circumferential direction. The resin molding method according to claim 1 .
突起部或いは溝部をそれぞれ有するキャビティインサー
トとコアインサートとを用いて樹脂を成形する樹脂成形
方法において、成形品の螺旋形状溝部の合わせが一致す
る位置で、前記突起部と前記溝部とが互いに嵌まり合う
ようにした請求項１または２記載の樹脂成形方法。 Te wherein butt Align surface smell, cavity insertion with each protrusion or groove portion provided with inclined slope
Molding of resin by molding the core and core insert
In the method, at a position where the mating of the spiral-shaped groove of the molded article matches, according to claim 1 or 2 resin molding method according to the manner and with the projecting portion and the groove fit fits together.
樹脂を流して成形する請求項１〜３のいずれか１項に記
載の樹脂成形方法。 4. From two gates provided on the end surface of the molded product
The resin molding method according to claim 1, wherein the resin is molded by pouring .
求項１〜４のいずれか１項に記載の樹脂成形方法。 5. The resin molding method according to claim 1, wherein the rotating body is cooled by air .
トの中央を貫通するように設けられ、成形品の内側を形
成し、一部は断面多角形状で、他の部分は断面丸形状な
る固定ピンを用いて樹脂を成形する樹脂成形方法におい
て、前記キャビティインサート側の成形品を引き出す際
に、前記コアインサートが回転するのを、前記断面多角
形状部にて回り止めする請求項１〜５のいずれか１項に
記載の樹脂成形方法。 6. Cavity insert and core inserter
Is formed so as to penetrate through the center of the
Part of which has a polygonal cross section and the other part has a round cross section.
In the resin molding method in which the resin is molded using the fixing pin
When pulling out the molded product on the cavity insert side
In addition, the rotation of the core insert is
The resin molding method according to any one of claims 1 to 5, wherein rotation is stopped by the shaped portion .
トの中央を貫通するように設けられ、成形品の内側を形
成し、表面に突起部を１箇所以上有する固定ピンを用い
て樹脂を成形する樹脂成形方法において、前記キャビテ
ィインサート側の成形品を引き出す際に、前記コアイン
サートが回転するのを、前記突起部にて回り止めする請
求項１〜５のいずれか１項に記載の樹脂成形方法。 7. Cavity insert and core inserter
Is formed so as to penetrate through the center of the
Using a fixed pin that has one or more protrusions on the surface
In the resin molding method of molding a resin by
When pulling out the molded product on the insert side,
The resin molding method according to any one of claims 1 to 5 , wherein rotation of the sart is prevented from rotating by the protrusion .
トの中央を貫通するように設けられ、成形品の内側を形
成し、前記キャビティ側と前記コア側とにそれぞれ分割
され、端部に傾斜を備えた凹部及び凸部を互いに有する
固定ピンを用いて樹脂を成形する樹脂成形方法におい
て、前記凹部と前記凸部とが成形時に互いに嵌まり合う
ようにした請求項１〜７のいずれか１項に記載の樹脂成
形方法。 8. A cavity insert and a core inserter
Is formed so as to penetrate through the center of the
Divided into the cavity side and the core side, respectively
And has a concave portion and a convex portion each having an inclined end portion.
In the resin molding method that molds the resin using the fixing pin
Te, resin formed according to any one of claims 1 to 7, and the concave portion and the convex portion is to fit each other fits in the molding
Shape method.
ピンとは、前記キャビティ側にて嵌合する請求項８記載
の樹脂成形方法。 9. The fixed <br/> pin fixed pin and the core side of the cavity side, 8. The method of resin molding according to fit in the cavity side.
ートの中央を貫通するように設けられ、成形品の内側を
形成し、前記キャビティ側と前記コア側とにそれぞれ分
割され、中央に貫通穴を有する固定ピンを用いて樹脂を
成形する樹脂成形方法において、成形時に双方の固定ピ
ンが嵌合した時にのみ、前記貫通穴に冷却水が循環する
ようにした請求項１〜９のいずれか１項に記載の樹脂成
形方法。 10. A cavity insert and a core inserter.
It is provided so as to penetrate through the center of the
Formed and divided into the cavity side and the core side, respectively.
The resin is split using a fixed pin that has a through hole in the center.
In the resin molding method for molding, only when the fixing pins of the molding during bi-lateral is fitted, a resin formed of any one of claims 1 to 9 in which the cooling water was circulated prior SL through hole
Shape method.
ートの中央を貫通するように設けられ、成形品の内側を
形成し、前記キャビティ側と前記コア側とにそれぞれ分
割され、中央に貫通穴を有する固定ピンを用いて樹脂を
成形する樹脂成形方法において、成形時に双方の固定ピ
ンが嵌合した時にのみ、前記貫通穴にエアーが循環する
ようにした請求項１〜９のいずれか１項に記載の樹脂成
形方法。 11. A cavity insert and a core inserter.
It is provided so as to penetrate through the center of the
Formed and divided into the cavity side and the core side, respectively.
The resin is split using a fixed pin that has a through hole in the center.
In the resin molding method for molding, only when the fixing pins of the molding during bi-lateral is fitted, a resin formed of pre-SL according to any one of claims 1 to 9, air was made to circulate through hole
Shape method.
表面に異なる方向の螺旋形状溝 部を形成するキャビティ
インサートとコアインサートと、前記キャビティインサ
ート及び前記コアインサートを回転方向に回転可能とす
る回転体とを備え、前記溝部の螺旋形状のリード比に合
わせて、成形品を回転させることなく、前記キャビティ
インサート及びコアインサートの各々を円周方向に回転
させながら型開きする構成とした樹脂成形装置。 12. The mold is opened from the abutting surface,
Cavity to form a different direction of the spiral-shaped groove on the surface
Insert, core insert, and the cavity insert
And the core insert can be rotated in the rotation direction.
And a rotating body that is compatible with the spiral lead ratio of the groove.
The cavity without rotating the molded product.
Rotate each insert and core insert in the circumferential direction
A resin molding device configured to open the mold while allowing it to move.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001285443A JP3531634B2 (en) | 2001-09-19 | 2001-09-19 | Resin molding method and apparatus |
| CN02142457.8A CN1238175C (en) | 2001-09-19 | 2002-09-19 | Resin formation method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001285443A JP3531634B2 (en) | 2001-09-19 | 2001-09-19 | Resin molding method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003089134A JP2003089134A (en) | 2003-03-25 |
| JP3531634B2 true JP3531634B2 (en) | 2004-05-31 |
Family
ID=19108591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001285443A Expired - Lifetime JP3531634B2 (en) | 2001-09-19 | 2001-09-19 | Resin molding method and apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3531634B2 (en) |
| CN (1) | CN1238175C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453021C (en) * | 2005-03-17 | 2009-01-21 | 杨景国 | Rotary brush rod and its prodn. method |
| CN100386049C (en) * | 2005-07-11 | 2008-05-07 | 杨景国 | Production of rotary brushing rod |
| CN1986190B (en) * | 2006-12-25 | 2010-05-19 | 胡志军 | Injection mold for rotary brush holder of vacuum cleaner |
| CN101992516B (en) * | 2009-08-19 | 2014-01-15 | 鸿富锦精密工业（深圳）有限公司 | Die |
| JP2011016378A (en) * | 2010-10-13 | 2011-01-27 | Olympus Imaging Corp | Tubular component |
| CN105430985A (en) * | 2015-12-17 | 2016-03-23 | 方德兰 | Fixing column device with solar panel for PCB capable of reducing noise |
| CN105406279A (en) * | 2015-12-17 | 2016-03-16 | 刘淑芬 | Fixing column device with ejector for a PCB |
| CN105376982A (en) * | 2015-12-17 | 2016-03-02 | 方德兰 | Fixing column device used for PCB circuit board and transmitted by gear |
| CN105376983A (en) * | 2015-12-17 | 2016-03-02 | 方德兰 | Fixing column device with alarm for PCB circuit board |
| CN116494572B (en) * | 2023-06-20 | 2023-09-15 | 北京玻钢院复合材料有限公司 | Spiral composite material forming method and forming control system |
-
2001
- 2001-09-19 JP JP2001285443A patent/JP3531634B2/en not_active Expired - Lifetime
-
2002
- 2002-09-19 CN CN02142457.8A patent/CN1238175C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1404980A (en) | 2003-03-26 |
| JP2003089134A (en) | 2003-03-25 |
| CN1238175C (en) | 2006-01-25 |
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