JPS6323894B2 - - Google Patents
Info
- Publication number
- JPS6323894B2 JPS6323894B2 JP54158379A JP15837979A JPS6323894B2 JP S6323894 B2 JPS6323894 B2 JP S6323894B2 JP 54158379 A JP54158379 A JP 54158379A JP 15837979 A JP15837979 A JP 15837979A JP S6323894 B2 JPS6323894 B2 JP S6323894B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- holding body
- molded
- movable body
- molding
- 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
- 238000000465 moulding Methods 0.000 claims description 28
- 229920003002 synthetic resin Polymers 0.000 claims description 19
- 239000000057 synthetic resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 208000031872 Body Remains Diseases 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920006324 polyoxymethylene 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は可動体とその可動体を保持する保持体
とを金型内で合成樹脂にて一次及び二次成形する
ようにした組物製品の製造方法に関するものであ
る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a braided product in which a movable body and a holder for holding the movable body are primarily and secondarily molded from synthetic resin in a mold. The present invention relates to a manufacturing method.
従来から上記可動体と保持体とからなる組物製
品を製造する場合には、これらを合成樹脂にて
夫々別成形した後互に嵌め合せる方法を採つてい
た。しかしながらこの方法では成形後組立をする
為に多くの組立工数を必要とし、また金型が部品
の数だけ必要となる上に、成形も夫々別々に行う
為に生産性が非常に悪い。また部品の組合せによ
るバラツキが大きい等の欠陥を有していた。
Conventionally, when manufacturing a composite product consisting of the movable body and the holding body, a method has been adopted in which these are molded separately from synthetic resin and then fitted together. However, this method requires a large number of assembly man-hours for assembly after molding, requires as many molds as the number of parts, and also has very low productivity because molding is performed separately for each part. It also had defects such as large variations due to the combination of parts.
なお従来公知の発明として特開昭51−151753号
公報があり、これでは、収縮率が異なり互に融着
し合わない異なる樹脂材料を使用し、予め摺動部
を形成する一方の部材を成形金型のキヤビテイ内
に位置せしめた後、摺動部を形成する他方の部材
を前記キヤビテイ内で成形し、冷却することによ
つて、両部材の収縮率の差により両部材間に摺動
可能な部分を形成するようにしたものである。 A conventionally known invention is JP-A No. 51-151753, in which one member forming the sliding part is molded in advance by using different resin materials that have different shrinkage rates and do not fuse together. After being positioned in the cavity of the mold, the other member forming the sliding part is molded in the cavity and cooled, making it possible to slide between the two members due to the difference in shrinkage rate between the two members. It is designed so that it forms a part of the body.
しかしながらこの公知発明の如く互に融着し合
わない異なる樹脂材料の収縮率の差を利用する方
法では、合成樹脂材料の選択に制約があり、また
金型の冷却時間の調整が面倒である等と言つた欠
陥を有していた。
However, in the method of this known invention that utilizes the difference in shrinkage rate of different resin materials that do not fuse to each other, there are restrictions on the selection of synthetic resin materials, and it is troublesome to adjust the cooling time of the mold. It had the following defects.
本発明は上述の如き実状に鑑み発明されたもの
であつて、可動体と保持体とを同一材料の合成樹
脂を用いて成形しながら、これら可動体と保持体
との間に可動に必要な充分なクリアランスを作る
ことが出来るようにした組物製品の製造方法を提
供しようとするものである。 The present invention was invented in view of the above-mentioned circumstances, and the movable body and the holding body are molded using the same synthetic resin material, and there is a space between the movable body and the holding body that is necessary for movement. It is an object of the present invention to provide a method for manufacturing a braided product that can create sufficient clearance.
本発明の組物製品の製造方法は、雌型と雄型と
からなる金型内で合成樹脂にて保持体を一次成形
し、その成形された保持体を上記雌型内に残した
ままで、上記雄型を交換するか若しくはスライド
させて、上記金型内に上記保持体と同一材料の合
成樹脂にて可動体を二次成形し、その際、上記一
次成形時には金型温度を低くすると共に溶融樹脂
の射出圧力を高くし、上記二次成形時には金型温
度を高くすると共に溶融樹脂の射出圧力を低くす
るようにしたものである。
The method for producing a braided product of the present invention involves primary molding a holder from a synthetic resin in a mold consisting of a female mold and a male mold, and leaving the molded holder in the female mold. The male die is replaced or slid, and a movable body is secondarily molded in the mold using synthetic resin of the same material as the holding body, and at this time, the temperature of the mold is lowered during the primary molding, and The injection pressure of the molten resin is increased, and during the secondary molding, the mold temperature is increased and the injection pressure of the molten resin is lowered.
本発明の組物製品の製造方法は、合成樹脂にて
一次成形した保持体を金型内に残したままで、そ
の金型内に合成樹脂にて可動体を二次成形するも
のであるが、その際、一次成形時と二次成形時と
で、金型温度と溶融樹脂の射出圧力との両方をコ
ントロールするので、保持体と可動体とを同一材
料の合成樹脂を用いて成形しても、また金型の冷
却時間を特に調整しなくても、保持体に対して可
動体を大きく収縮させることが出来て、可動体と
保持体との間に可動に必要な充分なクリアランス
を作ることが出来る。
In the method for manufacturing a braided product of the present invention, the movable body is secondarily molded from synthetic resin in the mold while the holding body which is primarily molded from synthetic resin remains in the mold. At that time, both the mold temperature and the injection pressure of the molten resin are controlled during primary molding and secondary molding, so even if the holding body and movable body are molded using the same synthetic resin material. In addition, the movable body can be greatly contracted relative to the holding body without particularly adjusting the cooling time of the mold, and sufficient clearance necessary for movement can be created between the movable body and the holding body. I can do it.
以下本発明の実施例を図面に基づき説明する。 Embodiments of the present invention will be described below based on the drawings.
先ず第１図は本発明で製造し得る組物製品の一
例を示したものであり、可動体１が保持体２内に
組込まれた組物製品となつている。なお可動体１
は保持体２に対して摺動自在の摺動体或いは回動
自在の可動体に構成され、可動体１の外周面と保
持体２の内周面との間には上記可動に必要な充分
なクリアランス３が形成されている。 First, FIG. 1 shows an example of a braided product that can be manufactured by the present invention, and is a braided product in which a movable body 1 is incorporated into a holder 2. Furthermore, movable body 1
is constituted by a sliding body that can freely slide or a movable body that can freely rotate relative to the holding body 2, and there is sufficient space between the outer circumferential surface of the movable body 1 and the inner circumferential surface of the holding body 2 necessary for the above-mentioned movement. Clearance 3 is formed.
次に上記組物製品の製造方法の第１実施例を第
２図〜第４図によつて説明する。なおこの実施例
では成形金型のコア（キヤビテイ）を入れ替えて
成形するようにしたものである。 Next, a first embodiment of the method for manufacturing the above braided product will be described with reference to FIGS. 2 to 4. In this embodiment, the core (cavity) of the molding die is replaced to perform molding.
先ず第２図において、雌型であるキヤビテイ
５、雄型であるコア６及びスライドコア７から成
る成形金型のキヤビテイ５内の空間５ａにランナ
ーゲート８から溶融樹脂９を射出して保持体２を
一次成形する。 First, in FIG. 2, molten resin 9 is injected from a runner gate 8 into a space 5a in a cavity 5 of a molding die consisting of a female cavity 5, a male core 6, and a slide core 7. primary molding.
次に第３図の如くその成形された保持体２をキ
ヤビテイ５内に残すようにして、そのキヤビテイ
５からコア６及びスライドコア７を外して型開き
する。 Next, as shown in FIG. 3, the molded holder 2 is left in the cavity 5, the core 6 and the slide core 7 are removed from the cavity 5, and the mold is opened.
次に、一定の時間経過後に第４図の如くキヤビ
テイ５に別の雄型であるコア１０を嵌込んで型締
めし、保持体２の内周面とコアピン１１との間に
新たに空間１２を作り、その空間１２に別のラン
ナーゲート１３から溶融樹脂１４を射出して、保
持体２内に可動体１を二次成形する。 Next, after a certain period of time has elapsed, another male core 10 is fitted into the cavity 5 and the mold is clamped, as shown in FIG. A molten resin 14 is injected into the space 12 from another runner gate 13 to secondarily mold the movable body 1 within the holding body 2.
次に上記組物製品の製造方法の第２実施例を第
５図及び第６図によつて説明する。なおこの実施
例では成形金型のコア（又はキヤビテイ）を入れ
替えないで成形するようにしたものである。 Next, a second embodiment of the method for manufacturing the braided product will be described with reference to FIGS. 5 and 6. In this embodiment, molding is performed without replacing the core (or cavity) of the molding die.
先ず第５図において、雌型であるキヤビテイ１
５、雄型であるコア１６及びスライドコア１７，
１８，１９から成る成形金型のキヤビテイ１５内
の空間１５ａにランナーゲート２０から前記溶融
樹脂９を射出して保持体２を一次成形する。 First, in Figure 5, cavity 1, which is a female type,
5. Male core 16 and slide core 17,
The molten resin 9 is injected from the runner gate 20 into the space 15a in the cavity 15 of the molding die 18, 19 to primary mold the holder 2.
次に第６図の如くスライドコア１７，１８，１
９を夫々所定位置まで下げてロツクし、保持体２
の内周面と、キヤビテイ１５、コア１６及びスラ
イドコア１７，１８，１９との間に新たな空間２
１を作り、その空間２１に別のランナーゲート２
２から前記溶融樹脂１４を射出して、保持体２内
に可動体１を二次成形する。 Next, as shown in Fig. 6, slide cores 17, 18, 1
9 to their respective predetermined positions and lock them, and then
A new space 2 is created between the inner peripheral surface of the cavity 15, the core 16 and the slide cores 17, 18, 19.
1 and another runner gate 2 in that space 21.
The movable body 1 is second-molded within the holding body 2 by injecting the molten resin 14 from the holding body 2 .
ところで以上述べた第１及び第２実施例におい
て前記合成樹脂９，１４には同一材料の合成樹
脂、例えばポリアセタール樹脂が用いられる。一
方前記一次成形時と前記二次成形時とでは成形条
件が変化され、それにより結果的に可動体１と保
持体２との成形収縮率が変化されるようになされ
ている。 By the way, in the first and second embodiments described above, the synthetic resins 9 and 14 are made of the same synthetic resin, such as polyacetal resin. On the other hand, the molding conditions are changed between the primary molding and the secondary molding, so that the molding shrinkage rates of the movable body 1 and the holding body 2 are changed as a result.
即ち一次成形時には金型温度、溶融樹脂射出シ
リンダの温度及び射出圧力が、夫々例えば30℃、
180℃及び1000Kg／cm2であるのに対して、二次成
形時には金型温度、溶融樹脂射出シリンダの温度
及び射出圧力が夫々例えば120℃，220℃及び400
Kg／cm2に変化されている。この結果保持体２に対
して可動体１の方が約1.5％近く大きく収縮し、
これら可動体１と保持体２との間には可動に必要
な充分なクリアランス３が形成される。なお例え
ば二次成形時における溶融樹脂１４の射出時間を
一次成形時における溶融樹脂９の射出時間より短
くすれば上記の成形収縮率を更に大きく変化させ
ることが出来る。そして上記クリアランス３は例
えば０〜0.3mmと自由にとることが出来る。 That is, during primary molding, the mold temperature, the temperature of the molten resin injection cylinder, and the injection pressure are, for example, 30°C,
180℃ and 1000Kg/ cm2 , whereas during secondary molding, the mold temperature, molten resin injection cylinder temperature and injection pressure are, for example, 120℃, 220℃ and 400℃, respectively.
It has been changed to Kg/cm 2 . As a result, movable body 1 contracts approximately 1.5% more than holding body 2,
A sufficient clearance 3 necessary for movement is formed between the movable body 1 and the holding body 2. Note that, for example, by making the injection time of the molten resin 14 during secondary molding shorter than the injection time of the molten resin 9 during primary molding, the above molding shrinkage rate can be changed even more. The clearance 3 can be freely set, for example, from 0 to 0.3 mm.
また本発明で言う回転体及び保持体の構造並び
に形状は図面に締めされたものに限定されること
なく、その他の有効な各種の構造並びに形状に変
更可能である。 Further, the structures and shapes of the rotating body and the holding body referred to in the present invention are not limited to those shown in the drawings, and can be changed to various other effective structures and shapes.
以上のように、本発明の組物製品の製造方法
は、合成樹脂にて一次成形した保持体を金型内に
残したままで、その金型内に合成樹脂にて可動体
を二次成形する際、一次成形時と二次成形時と
で、金型温度と溶融樹脂の射出圧力との両方をコ
ントロールすることによつて、保持体と可動体と
を同一材料の合成樹脂を用いて成形しても、また
金型の冷却時間を特に調整しなくても、保持体に
対して可動体を大きく収縮させることが出来るよ
うにして、可動体と保持体との間に可動に必要な
充分なクリアランスを作ることが出来るようにし
たので、可動体と保持体とを同一材料の合成樹脂
にて成形することが出来る。従つて、合成樹脂材
料の選択に制約がなくなると共に、面倒な金型の
冷却時間の調整も行わなくても済むので、組物製
品の製造を非常に容易に行える。
As described above, the method for manufacturing a braided product of the present invention involves secondary molding the movable body from synthetic resin in the mold while leaving the holding body primarily molded from synthetic resin in the mold. By controlling both the mold temperature and the injection pressure of the molten resin during primary molding and secondary molding, the holding body and movable body are molded using the same synthetic resin material. The movable body can be greatly contracted with respect to the holding body without adjusting the mold cooling time, and there is sufficient space between the movable body and the holding body for movement. Since the clearance can be created, the movable body and the holding body can be molded from the same synthetic resin material. Therefore, there are no restrictions on the selection of synthetic resin materials, and there is no need to make troublesome adjustments to the cooling time of the mold, making it possible to manufacture braided products very easily.
図面は本発明の実施例を示したものであつて、
第１図は成形完了製品の断面図、第２図〜第４図
は製造方法の第１実施例を説明する金型の断面
図、第５図及び第６図は製造方法の第２実施例を
説明する金型の断面図である。
また図面に用いられた符号において、１……可
動体、２……保持体、３……クリアランス、５，
１５……雌型であるキヤビテイ、６，１０，１６
……雄型であるコア、７，１７，１８，１９……
雄型であるスライドコア、９，１４……合成樹脂
である。
The drawings show embodiments of the invention,
Figure 1 is a sectional view of the molded product, Figures 2 to 4 are sectional views of a mold explaining the first embodiment of the manufacturing method, and Figures 5 and 6 are the second embodiment of the manufacturing method. FIG. 2 is a cross-sectional view of a mold for explaining. In addition, in the symbols used in the drawings, 1...movable body, 2...holding body, 3...clearance, 5,
15...Female cavity, 6, 10, 16
...Male core, 7, 17, 18, 19...
Male slide cores 9, 14 are made of synthetic resin.
Claims (1)
保持体を一次成形し、その成形された保持体を上
記雌型内に残したままで、上記雄型を交換するか
若しくはスライドさせて、上記金型内に上記保持
体と同一材料の合成樹脂にて可動体を二次成形
し、その際、上記一次成形時には金型温度を低く
すると共に溶融樹脂の射出圧力を高くし、上記二
次成形時には金型温度を高くすると共に溶融樹脂
の射出圧力を低くするようにしたことを特徴とす
る組物製品の製造方法。1. A holding body is primarily molded from synthetic resin in a mold consisting of a female mold and a male mold, and the male mold is replaced or slid while the molded holding body remains in the female mold. Then, the movable body is secondarily molded in the mold using a synthetic resin of the same material as the holding body, and at that time, during the primary molding, the mold temperature is lowered and the injection pressure of the molten resin is increased. A method for manufacturing a braided product, characterized in that during secondary molding, the temperature of the mold is raised and the injection pressure of molten resin is lowered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15837979A JPS5680446A (en) | 1979-12-05 | 1979-12-05 | Manufacture of assembled finished product set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15837979A JPS5680446A (en) | 1979-12-05 | 1979-12-05 | Manufacture of assembled finished product set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5680446A JPS5680446A (en) | 1981-07-01 |
| JPS6323894B2 true JPS6323894B2 (en) | 1988-05-18 |
Family
ID=15670411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15837979A Granted JPS5680446A (en) | 1979-12-05 | 1979-12-05 | Manufacture of assembled finished product set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5680446A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2593011A1 (en) * | 1986-01-14 | 1987-07-17 | Guillou Marc | Method for manufacturing a hollow structure, incorporating a sheet of lead, and baffle produced by this method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51151753A (en) * | 1975-06-20 | 1976-12-27 | Matsushita Electric Ind Co Ltd | Method of producing resin product with slide |
-
1979
- 1979-12-05 JP JP15837979A patent/JPS5680446A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51151753A (en) * | 1975-06-20 | 1976-12-27 | Matsushita Electric Ind Co Ltd | Method of producing resin product with slide |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5680446A (en) | 1981-07-01 |
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