JPH10278076A - Mold for injection molding of composite molding - Google Patents
Mold for injection molding of composite moldingInfo
- Publication number
- JPH10278076A JPH10278076A JP8522197A JP8522197A JPH10278076A JP H10278076 A JPH10278076 A JP H10278076A JP 8522197 A JP8522197 A JP 8522197A JP 8522197 A JP8522197 A JP 8522197A JP H10278076 A JPH10278076 A JP H10278076A
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- slide piece
- sprue
- resin
- mold
- 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.)
- Granted
Links
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
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、異なる二種類の合
成樹脂を交互に射出して一体的に成形する複合成形の射
出成形用金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding die for composite molding in which two different kinds of synthetic resins are alternately injected and molded integrally.
【0002】[0002]
【従来の技術】例えば、硬質の合成樹脂と軟質の合成樹
脂とを一体的に成形した複合成形品は、車両部品、建築
材料、電気製品等の分野で広く使用されている。2. Description of the Related Art For example, composite molded articles obtained by integrally molding a hard synthetic resin and a soft synthetic resin are widely used in the fields of vehicle parts, building materials, electric products and the like.
【0003】図9(A)、(B)は複合成形品の一例と
して、車両用座席のリクライニング装置2を覆うシート
サイドシールド1を示したもので、リクライニング装置
2の露出を防ぎ見栄えを良くしたり、小物の侵入を防止
するためにシートバック3との隙間を無くしたり少なく
する必要があることから、車両本体に取り付ける部分を
硬質材4で、シートバック3との接触部を軟質材(エラ
ストマー)5でそれぞれ成形し一体化したものである。FIGS. 9A and 9B show a seat side shield 1 for covering a reclining device 2 of a vehicle seat as an example of a composite molded product, which prevents the reclining device 2 from being exposed and improves its appearance. It is necessary to eliminate or reduce the gap with the seat back 3 in order to prevent the entry of small objects. Therefore, the portion to be attached to the vehicle body is made of the hard material 4 and the contact portion with the seat back 3 is made of the soft material (elastomer). ) 5 and molded and integrated.
【0004】図10、図11は、上記シートサイドシー
ルド1の従来の射出成形用金型および成形方法を示した
もので、共通の固定側6に対して、可動側7は硬質材4
のみを成形する金型7a(図10)と、軟質材5のみを
成形する金型7b(図11)との二型を用意し、これら
を交互に交換して射出成形し、一体化するものである。FIGS. 10 and 11 show a conventional injection molding die and a molding method for the above-mentioned seat side shield 1. In FIG.
A mold 7a (FIG. 10) that molds only the soft material 5 and a mold 7b (FIG. 11) that molds only the soft material 5 are prepared, and these are alternately exchanged to be injection molded and integrated. It is.
【0005】また、硬質材4と軟質材5を、それぞれ別
の金型を用意して個別に成形し、お互いを接着や溶着に
より一体化する方法も行われている。There is also a method in which the hard material 4 and the soft material 5 are separately formed by preparing separate molds, and integrated with each other by bonding or welding.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、前者の
成形装置では、可動金型7を二型必要とすると共に、こ
の二つの可動金型7a、7bの交換を迅速にするために
可動金型取付盤を回転式とした成形機を必要とするの
で、設備コストの増大が避けられない。また、金型交換
の時間がかかり型温が低下するので、成形温度管理の困
難性があり、条件を回復するために成形サイクルが長く
なったり、待機時の温度保持設備が必要となる。However, in the former molding apparatus, two movable dies 7 are required, and the movable dies 7 are mounted in order to quickly exchange the two movable dies 7a and 7b. Since a molding machine having a rotary board is required, an increase in equipment cost is inevitable. In addition, since it takes time to change the mold and the mold temperature decreases, there is a difficulty in controlling the molding temperature. In order to recover the conditions, a molding cycle is lengthened, and a temperature holding facility during standby is required.
【0007】後者の溶着等により一体化する方法では、
やはり個々の成形金型が必要になると共に、硬質材4と
軟質材5とを溶着、接着する工程が増えるので、トータ
ルコストは増大する。In the latter method of integration by welding or the like,
Again, individual molding dies are required, and the number of steps for welding and bonding the hard material 4 and the soft material 5 increases, so that the total cost increases.
【0008】また、溶着や接着の場合、端面同士の溶
着、接着では必要な強度が得られない場合が多いので、
双方の端部を重ねて主材料側(例えばポリプロピレン)
に形成したボスを、副材料側(エラストマー)のボス孔
に合わせ、ボスを溶融して溶着させるものの、溶着不良
による剥れが発生し易く、不良品の要因となっている。
さらに、その場合、端面は溶着しないので、該端面が露
出したり、埃等が侵入することなどから、外観上の見栄
えが悪くなる等の問題点があった。In the case of welding or bonding, the required strength is often not obtained by welding or bonding the end faces.
Overlap both ends to the main material side (eg polypropylene)
The boss formed in the above is aligned with the boss hole on the sub-material side (elastomer), and the boss is melted and welded. However, peeling due to poor welding easily occurs, which is a factor of defective products.
Further, in this case, since the end face is not welded, there is a problem that the end face is exposed, dust or the like invades, and the external appearance is deteriorated.
【0009】本発明はこのような問題点に鑑みてなされ
たもので、強度が強く見栄えのよい複合成形品を、一つ
の成形金型で効率良く、かつ低コストで成形可能とした
複合成形の射出成形用金型の提供を目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been developed to provide a composite molded product having high strength and good appearance, which can be molded efficiently and at low cost with one molding die. It aims to provide injection molding dies.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するため
に、第一の発明は、固定側10と可動側20とからなる
射出成形用金型であって、固定側10には、第一ゲート
13を介して第一キャビティ11の一端に連通する第一
樹脂用の第一スプル12と、第一キャビティ11の他端
から外れて可動側20との境界面21に開口する第二樹
脂用の第二スプル14とを設け、可動側20の固定側1
0との境界部には、型開き方向と直交方向に進退可能な
スライド駒22を設置し、該スライド駒22は、前進時
に前記第一キャビティ11の他端および第二スプル14
を封じ、後退時に該第一キャビティ11の他端および第
二スプル14にそれぞれ連通する第二キャビティ24お
よび第二ゲート23を、内部において互に連通する形態
で設けた。In order to achieve the above object, a first aspect of the present invention is an injection molding die having a fixed side 10 and a movable side 20. A first sprue 12 for the first resin communicating with one end of the first cavity 11 through the gate 13, and a second sprue for the second resin opening from the other end of the first cavity 11 to the boundary surface 21 with the movable side 20. Of the movable side 20 and the fixed side 1
0, a slide piece 22 is provided at the boundary between the slide piece 22 and the slide piece 22. The slide piece 22 can move forward and backward in the direction orthogonal to the mold opening direction.
And a second cavity 24 and a second gate 23 which respectively communicate with the other end of the first cavity 11 and the second sprue 14 at the time of retreat are provided in such a manner that they communicate with each other inside.
【0011】第二の発明は、固定側10と可動側30と
からなる射出成形用金型であって、固定側10には、第
一ゲート13を介して第一キャビティ11の一端に連通
する第一樹脂用の第一スプル12と、第一キャビティ1
1の他端から外れて可動側30との境界面21に開口す
る第二樹脂用の第二スプル14とを設け、可動側30の
固定側10との境界部には、型開き方向と直交方向に進
退可能であって、前進時に前記第一キャビティ11の他
端および第二スプル14を封じる第一スライド駒32
と、該第一スライド駒32の進退方向と直交方向に進退
可能であって、第一スライド駒32の後退時に前進し
て、前記第一キャビティ11の他端および第二スプル1
4にそれぞれ連通する第二キャビティ34および第二ゲ
ート33を、内部において互に連通する形態で設けた第
二スライド駒36と、を設置した。A second aspect of the present invention is an injection molding die including a fixed side 10 and a movable side 30, and the fixed side 10 communicates with one end of a first cavity 11 via a first gate 13. First sprue 12 for first resin and first cavity 1
A second sprue 14 for the second resin is provided at a boundary surface 21 with the movable side 30 that is separated from the other end of the movable side 30. A boundary between the movable side 30 and the fixed side 10 is orthogonal to the mold opening direction. The first slide piece 32 which can move forward and backward and seals the other end of the first cavity 11 and the second sprue 14 when moving forward.
And the first slide piece 32 can move forward and backward in the direction perpendicular to the direction of movement, and when the first slide piece 32 retreats, moves forward, and the other end of the first cavity 11 and the second sprue 1 move.
4, a second slide piece 36 provided with a second cavity 34 and a second gate 33 communicating with each other in the interior.
【0012】第三の発明は、固定側10と可動側40と
からなる射出成形用金型であって、固定側10には、第
一ゲート13を介して第一キャビティ11の一端に連通
する第一樹脂用の第一スプル12と、第一キャビティ1
1の他端から外れて可動側40との境界面21に開口す
る第二樹脂用の第二スプル14とを設け、可動側40の
固定側10との境界部には、型開き方向と直交方向に進
退可能であって、前進時に前記第一キャビティ11の他
端および第二スプル14を封じる第一スライド駒42
と、型開き方向に昇降可能であって、第一スライド駒4
2の後退時に上昇して、前記第一キャビティ11の他端
および第二スプル14にそれぞれ連通する第二キャビテ
ィ44および第二ゲート43を、内部において互に連通
する形態で設けた第二スライド駒46と、を設置し、か
つ該第二スライド駒46の下方には、互の傾斜面に形成
された凹凸で該第二スライド駒46にスライド可能に係
合し、型開き方向と直交方向に進退することにより第二
スライド駒46を昇降させる第三スライド駒47を設置
した。A third aspect of the present invention relates to an injection molding die having a fixed side 10 and a movable side 40, which communicates with one end of a first cavity 11 via a first gate 13. First sprue 12 for first resin and first cavity 1
A second sprue 14 for the second resin is provided at a boundary surface 21 between the movable side 40 and the movable side 40. The second sprue 14 for the second resin is provided at a boundary between the movable side 40 and the fixed side 10. A first slide piece 42 that can move forward and backward, and seals the other end of the first cavity 11 and the second sprue 14 when moving forward.
The first slide piece 4 is movable up and down in the mold opening direction.
2, a second slide piece provided with a second cavity 44 and a second gate 43, which are raised when retracted and communicate with the other end of the first cavity 11 and the second sprue 14, respectively, so as to communicate with each other inside. 46, and the lower part of the second slide piece 46 is slidably engaged with the second slide piece 46 with unevenness formed on the mutually inclined surfaces, and in the direction orthogonal to the mold opening direction. A third slide piece 47 for moving the second slide piece 46 up and down by moving forward and backward is provided.
【0013】[0013]
【発明の実施の形態】図1〜図3は、第一の発明の実施
の形態を示したもので、射出成形用金型は固定側10と
可動側20とからなり、固定側10には、第一樹脂aと
して例えば主材(硬質材)となるポリプロピレン(P
P)を注入する第一スプル12と、第二樹脂bとして例
えば副材(軟質材)となる熱可塑性エラストマーを注入
する第二スプル14とが適宜離れて設けられている。1 to 3 show a first embodiment of the present invention. An injection molding die includes a fixed side 10 and a movable side 20. As the first resin a, for example, a polypropylene (P
A first sprue 12 for injecting P) and a second sprue 14 for injecting, for example, a thermoplastic elastomer serving as an auxiliary material (soft material) as the second resin b are provided as appropriate.
【0014】上記第一スプル12は、型中心に位置し、
第一ゲート13を介して第一キャビティ11の一端に連
通しており、第二スプル14は、第一キャビティ11の
他端から外れて可動側20との境界面21に貫通してい
る。The first sprue 12 is located at the center of the mold,
The second sprue 14 communicates with one end of the first cavity 11 through the first gate 13, and penetrates the boundary surface 21 with the movable side 20 while being separated from the other end of the first cavity 11.
【0015】可動側20の固定側10との境界部には、
例えば図9(B)に示したシートバック3とシートサイ
ドシールド1との背面からの位置関係において、シート
バック3側部に隙間無い状態で形成される軟質材(エラ
ストマー)5に対応する位置に配置されたスライド駒2
2が、シリンダー25の作動により、型開き方向と直交
方向に進退可能に設置されている。At the boundary between the movable side 20 and the fixed side 10,
For example, in the positional relationship from the back surface of the seat back 3 and the seat side shield 1 shown in FIG. 9B, a position corresponding to a soft material (elastomer) 5 formed in a state where there is no gap on the side of the seat back 3. Slide piece 2 placed
2 is installed so as to be able to advance and retreat in a direction orthogonal to the mold opening direction by the operation of the cylinder 25.
【0016】このスライド駒22の上面には、その後退
位置において前記第一キャビティ11の他端に連通する
第二キャビティ24と、前記第二スプル14に連通する
第二ゲート23とが、内部において連通する形態で開口
形成されている。A second cavity 24 communicating with the other end of the first cavity 11 at a retracted position and a second gate 23 communicating with the second sprue 14 are provided on the upper surface of the slide piece 22. The opening is formed so as to communicate.
【0017】この射出成形用金型においては、先ずスラ
イド駒22を前進させ第一キャビティ11の他端及び第
二スプル14を封じた状態で、第一スプル12および第
一ゲート13を介して第一キャビティ11内に、第一樹
脂aであるPPを射出し(図1)、次いでスライド駒2
2を後退させ第一キャビティ11及び第二スプル14に
それぞれ第二キャビティ24及び第二ゲート23を連通
させた状態で、第二スプル14および第二ゲート23を
介して第二キャビティ24内に、第二樹脂bであるエラ
ストマーを射出して第一樹脂aと融着させ(図2)、複
合成形品cを成形する。しかる後、型開きして、図示省
略した突き出し又は取出機構により複合成形品cを離型
させる(図3)。In this injection molding die, first, the slide piece 22 is advanced, and the other end of the first cavity 11 and the second sprue 14 are sealed. Inject the PP which is the first resin a into one cavity 11 (FIG. 1), and then slide the slide piece 2
2 with the second cavity 24 and the second gate 23 communicating with the first cavity 11 and the second sprue 14, respectively, in the second cavity 24 via the second sprue 14 and the second gate 23, The elastomer as the second resin b is injected and fused with the first resin a (FIG. 2) to form a composite molded article c. Thereafter, the mold is opened, and the composite molded article c is released from the mold by a protrusion or removal mechanism (not shown) (FIG. 3).
【0018】図4、図5は、第2の発明の実施の形態を
示したもので、この射出成形用金型の固定側10は、第
1の発明と同様の構成であるので、その説明は省略す
る。FIGS. 4 and 5 show an embodiment of the second invention. The fixed side 10 of the injection mold has the same structure as that of the first invention. Is omitted.
【0019】可動側30の固定側10との境界部には、
前記第一の発明のスライド駒22と同様の位置に配置さ
れた第一スライド駒32が、シリンダー35の作動によ
り型開き方向と直交方向に進退可能に設置されている
(図4)と共に、この第一スライド駒32の後退による
空域に、該第一スライド駒32の進退方向と直交方向に
進退可能な第二スライド駒36が、シリンダー37に連
結されて設置されている(図5)。At the boundary between the movable side 30 and the fixed side 10,
The first slide piece 32 arranged at the same position as the slide piece 22 of the first invention is installed so as to be able to advance and retreat in a direction orthogonal to the mold opening direction by the operation of the cylinder 35 (FIG. 4). A second slide piece 36, which can be moved back and forth in a direction perpendicular to the direction in which the first slide piece 32 is moved, is installed in an air space formed by the retreat of the first slide piece 32, which is connected to a cylinder 37 (FIG. 5).
【0020】この第二スライド駒36の上面には、その
前進位置において、前記第一キャビティ11の他端に連
通する第二キャビティ34と、前記第二スプル14に連
通する第二ゲート33とが、内部において連通する形態
で開口形成されている。On the upper surface of the second slide piece 36, at its forward position, a second cavity 34 communicating with the other end of the first cavity 11 and a second gate 33 communicating with the second sprue 14. , Are formed so as to communicate with each other.
【0021】この射出成形用金型においては、先ず第一
スライド駒32を前進させ第一キャビティ11の他端及
び第二スプル14を封じた状態で、第一スプル12およ
び第一ゲート13を介して第一キャビティ11内に、第
一樹脂aであるPPを射出し(図4)、次いで第一スラ
イド駒32を後退させると共に第二スライド駒36を前
進させ第一キャビティ11及び第二スプル14にそれぞ
れ第二キャビティ34及び第二ゲート33を連通させた
状態で、第二スプル14および第二ゲート33を介して
第二キャビティ34内に、第二樹脂bであるエラストマ
ーを射出して第一樹脂aと融着させ(図5)、複合成形
品cを成形する。しかる後、図3と同様に型開きして、
図示省略した突き出し機構により複合成形品cを離型さ
せる。In this injection molding die, first, the first slide piece 32 is advanced, and the other end of the first cavity 11 and the second sprue 14 are sealed. Then, PP, which is the first resin a, is injected into the first cavity 11 (FIG. 4), and then the first slide piece 32 is retracted and the second slide piece 36 is advanced to advance the first cavity 11 and the second sprue 14. With the second cavity 34 and the second gate 33 being in communication with each other, the second resin b is injected into the second cavity 34 through the second sprue 14 and the second gate 33 to release the first resin b. It is fused with the resin a (FIG. 5) to form a composite molded article c. After that, open the mold in the same way as in FIG.
The composite molded product c is released from the mold by a protrusion mechanism not shown.
【0022】図6〜図8は、第3の発明の実施の形態を
示したもので、この射出成形用金型の固定側10も、第
1の発明と同様の構成であるので、その説明は省略す
る。FIGS. 6 to 8 show an embodiment of the third invention. The fixed side 10 of the injection mold has the same structure as that of the first invention. Is omitted.
【0023】可動側40の固定側10との境界部には、
前記第一の発明のスライド駒22と同様の位置に配置さ
れた第一スライド駒42が、シリンダー45の作動によ
り型開き方向と直交方向に進退可能に設置されていると
共に、この第一スライド駒42の後退による空域に、型
開き方向に進退(昇降)可能とされた第二スライド駒4
6が配置されている。At the boundary between the movable side 40 and the fixed side 10,
A first slide piece 42 arranged at the same position as the slide piece 22 of the first invention is installed so as to be able to advance and retreat in a direction orthogonal to the mold opening direction by operation of a cylinder 45, and the first slide piece 42 is provided. 42, the second slide piece 4 capable of moving back and forth (elevating and lowering) in the mold opening direction in the airspace due to the retreat.
6 are arranged.
【0024】この第二スライド駒46の上面には、その
上昇位置において、前記第一キャビティ11の他端に連
通する第二キャビティ44と、前記第二スプル14に連
通する第二ゲート43とが、内部において連通する形態
で開口形成されている。また、下面は第一スライド駒4
2の進退方向と直交方向に傾斜していると共に、その傾
斜方向に沿ってあり溝状の係合凹部49が形成されてい
る。On the upper surface of the second slide piece 46, at its raised position, a second cavity 44 communicating with the other end of the first cavity 11 and a second gate 43 communicating with the second sprue 14. , Are formed so as to communicate with each other. The lower surface is the first slide piece 4
2 and is inclined in a direction orthogonal to the direction of retreat, and a groove-shaped engaging concave portion 49 is formed along the inclined direction.
【0025】そして、この第二スライド駒46の下方に
は、第一スライド駒42の進退方向と直交方向に進退可
能な第三スライド駒47が、シリンダー48に連結され
て設置されている。該第三スライド駒47の先端部上面
は、第二スライド駒46の下面に対応して傾斜している
と共に、前記係合凹部49にスライド可能に係合する係
合凸部50が形成されている。Below the second slide piece 46, a third slide piece 47 which can move forward and backward in a direction perpendicular to the direction of movement of the first slide piece 42 is connected to a cylinder 48 and installed. The upper surface of the distal end portion of the third slide piece 47 is inclined corresponding to the lower surface of the second slide piece 46, and an engagement projection 50 slidably engaged with the engagement recess 49 is formed. I have.
【0026】この射出成形用金型においては、先ず第一
スライド駒42を前進させ第一キャビティ11の他端及
び第二スプル14を封じた状態で、第一スプル12およ
び第一ゲート13を介して第一キャビティ11内に、第
一樹脂aであるPPを射出し(図6)、次いで第一スラ
イド駒42を後退させると共に、第三スライド駒47を
前進させることにより、第二スライド駒46を上昇させ
第一キャビティ11及び第二スプル14にそれぞれ第二
キャビティ44及び第二ゲート43を連通させた状態
で、第二スプル14および第二ゲート43を介して第二
キャビティ44内に、第二樹脂bであるエラストマーを
射出して第一樹脂aと融着させ(図7、図8)、複合成
形品cを成形する。しかる後、図3と同様に型開きし
て、図示省略した突き出し機構により複合成形品cを離
型させる。In this injection molding die, first, the first slide piece 42 is advanced, and the other end of the first cavity 11 and the second sprue 14 are sealed. By injecting PP as the first resin a into the first cavity 11 (FIG. 6), the first slide piece 42 is then moved backward, and the third slide piece 47 is moved forward, so that the second slide piece 46 is advanced. In a state where the second cavity 44 and the second gate 43 are communicated with the first cavity 11 and the second sprue 14, respectively, and the second cavity 44 and the second sprue 14 are inserted into the second cavity 44 via the second sprue 14 and the second gate 43. The two resin b elastomer is injected and fused with the first resin a (FIGS. 7 and 8) to form a composite molded article c. Thereafter, the mold is opened in the same manner as in FIG. 3, and the composite molded article c is released from the mold by a projection mechanism not shown.
【0027】なお、上記実施の形態はシートサイドシー
ルドの成形について説明したが、これに限られるもので
はなく、他の車両部品は勿論、構築材料等の雨水や埃の
侵入を防止する部材、損傷し易い個所や人体との接触部
等の成形に応用できるものである。Although the above embodiment has described the formation of the seat side shield, the present invention is not limited to this, and it is not limited to this. It can be applied to molding of easy-to-make parts and contact parts with the human body.
【0028】また、第二樹脂を熱可塑性エラストマーと
したが、これに限られるものではなく、例えば第一樹脂
と同じ硬質系で異色の樹脂とすることも可能である。Although the second resin is a thermoplastic elastomer, the present invention is not limited to this. For example, it is also possible to use the same hard resin having a different color as the first resin.
【0029】[0029]
【発明の効果】本発明によれば、異なる二種類の樹脂の
成形を、金型を交換することなくスライド駒の作動によ
り行うので、従来の二型必要とした金型を一型にするこ
とが可能となり、設備コストを大幅に低減することがで
きる。According to the present invention, the molding of two different types of resin is performed by operating the slide piece without exchanging the molds, so that the conventional mold requiring two molds can be made into one mold. This makes it possible to significantly reduce equipment costs.
【0030】また、金型交換の時間が不要になると共
に、金型温度の成形条件も維持し易くなるので、成形サ
イクルが短縮されて効率よく成形でき、ひいてはトータ
ルコストを低減することができる。In addition, since the time for changing the mold is not required, and the molding conditions at the mold temperature are easily maintained, the molding cycle can be shortened and the molding can be performed efficiently, and the total cost can be reduced.
【0031】さらに、射出直後の未だ軟化溶融に近い状
態の第一樹脂に、第二樹脂を迅速に射出して一体成形す
るので、各樹脂の端面同士が強固に融着され、強度が安
定すると共に、外観上の見栄えもよく、かつまた従来の
溶着等の工程を不要にすることができる。Furthermore, since the second resin is rapidly injected and integrally molded with the first resin that is still in a state of softening and melting immediately after injection, the end faces of each resin are firmly fused to each other, and the strength is stabilized. At the same time, the appearance is good, and the conventional steps such as welding can be omitted.
【図1】第一の発明の実施の形態を示す、第一樹脂成形
時の断面図である。FIG. 1 is a cross-sectional view showing a first resin molding according to an embodiment of the first invention.
【図2】同、第二樹脂成形時の断面図である。FIG. 2 is a cross-sectional view at the time of molding a second resin.
【図3】同、型開き離型時の断面図である。FIG. 3 is a cross-sectional view when the mold is opened and released.
【図4】第二の発明の実施の形態を示す、第一樹脂成形
時の断面図である。FIG. 4 is a cross-sectional view showing the embodiment of the second invention at the time of molding the first resin.
【図5】同、第二樹脂成形時を示す、図4のV−V線断
面図である。FIG. 5 is a sectional view taken along the line VV of FIG. 4 showing the second resin molding.
【図6】第三の発明の実施の形態を示す、第一樹脂成形
時の断面図である。FIG. 6 is a cross-sectional view of the third embodiment at the time of molding the first resin.
【図7】同、第二樹脂成形時の断面図である。FIG. 7 is a cross-sectional view when the second resin is molded.
【図8】同、図7のVIII−VIII線断面図である。FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 7;
【図9】シートサイドシールドの概略構成を示す、
(A)は側面図、(B)は(A)のB方向矢視図であ
る。FIG. 9 shows a schematic configuration of a seat side shield.
(A) is a side view, (B) is a view in the direction of arrow B in (A).
【図10】従来の複合成形の射出成形用金型を示す、第
一樹脂成形時の断面図である。FIG. 10 is a cross-sectional view of a conventional composite molding injection mold during first resin molding.
【図11】同、第二樹脂成形時の断面図である。FIG. 11 is a cross-sectional view at the time of molding the second resin.
10 固定側 11 第一キャビティ 12 第一スプル 13 第一ゲート 14 第二スプル 20、30、40 可動側 21 境界面 22 スライド駒 23、33、43 第二ゲート 24、34、44 第二キャビティ 25、35、37、45、48 シリンダー 32、42 第一スライド駒 36、46 第二スライド駒 47 第三スライド駒 a 第一樹脂 b 第二樹脂 c 複合成形品 Reference Signs List 10 Fixed side 11 First cavity 12 First sprue 13 First gate 14 Second sprue 20, 30, 40 Movable side 21 Boundary surface 22 Slide piece 23, 33, 43 Second gate 24, 34, 44 Second cavity 25, 35, 37, 45, 48 Cylinder 32, 42 First slide piece 36, 46 Second slide piece 47 Third slide piece a First resin b Second resin c Composite molded product
Claims (3)
型であって、 固定側には、第一ゲートを介して第一キャビティの一端
に連通する第一樹脂用の第一スプルと、第一キャビティ
の他端から外れて可動側との境界面に開口する第二樹脂
用の第二スプルとを設け、 可動側の固定側との境界部には、型開き方向と直交方向
に進退可能なスライド駒を設置し、 該スライド駒は、前進時に前記第一キャビティの他端お
よび第二スプルを封じ、後退時に該第一キャビティの他
端および第二スプルにそれぞれ連通する第二キャビティ
および第二ゲートを、内部において互いに連通する形態
で設けてなる複合成形の射出成形用金型。An injection mold comprising a fixed side and a movable side, wherein a fixed side has a first sprue for a first resin which communicates with one end of a first cavity through a first gate. A second sprue for a second resin, which is separated from the other end of the first cavity and opens at a boundary surface with the movable side, at a boundary between the movable side and the fixed side, in a direction orthogonal to the mold opening direction. A slide piece capable of moving forward and backward is provided, the slide piece seals the other end of the first cavity and the second sprue when moving forward, and communicates with the other end of the first cavity and the second sprue when moving backward. And a second molding, wherein the second gate is provided so as to communicate with each other inside.
型であって、 固定側には、第一ゲートを介して第一キャビティの一端
に連通する第一樹脂用の第一スプルと、第一キャビティ
の他端から外れて可動側との境界面に開口する第二樹脂
用の第二スプルとを設け、 可動側の固定側との境界部には、型開き方向と直交方向
に進退可能であって、前進時に前記第一キャビティの他
端および第二スプルを封じる第一スライド駒と、該第一
スライド駒の進退方向と直交方向に進退可能であって、
第一スライド駒の後退時に前進して、前記第一キャビテ
ィの他端および第二スプルにそれぞれ連通する第二キャ
ビティおよび第二ゲートを、内部において互に連通する
形態で設けた第二スライド駒と、を設置してなる複合成
形の射出成形用金型。2. A mold for injection molding comprising a fixed side and a movable side, wherein the fixed side has a first sprue for a first resin which communicates with one end of a first cavity through a first gate. A second sprue for a second resin, which is separated from the other end of the first cavity and opens at a boundary surface with the movable side, at a boundary between the movable side and the fixed side, in a direction orthogonal to the mold opening direction. It is possible to advance and retreat, and a first slide piece that seals the other end of the first cavity and the second sprue at the time of advancement, and is able to advance and retreat in a direction orthogonal to the advance and retreat direction of the first slide piece,
A second slide piece, which is advanced when the first slide piece retreats and is provided with a second cavity and a second gate communicating with the other end of the first cavity and the second sprue, respectively, in a form communicating with each other inside, A composite molding injection mold with a
型であって、 固定側には、第一ゲートを介して第一キャビティの一端
に連通する第一樹脂用の第一スプルと、第一キャビティ
の他端から外れて可動側との境界面に開口する第二樹脂
用の第二スプルとを設け、 可動側の固定側との境界部には、型開き方向と直交方向
に進退可能であって、前進時に前記第一キャビティの他
端および第二スプルを封じる第一スライド駒と、型開き
方向に昇降可能であって、第一スライド駒の後退時に上
昇して、前記第一キャビティの他端および第二スプルに
それぞれ連通する第二キャビティおよび第二ゲートを、
内部において互いに連通する形態で設けた第二スライド
駒と、を設置し、 かつ該第二スライド駒の下方には、互の傾斜面に形成さ
れた凹凸で該第二スライド駒にスライド可能に係合し、
型開き方向と直交方向に進退することにより第二スライ
ド駒を昇降させる第三スライド駒を設置して成る複合成
形の射出成形用金型。3. An injection mold comprising a fixed side and a movable side, wherein the fixed side includes a first sprue for a first resin which communicates with one end of a first cavity through a first gate. A second sprue for a second resin, which is separated from the other end of the first cavity and opens at a boundary surface with the movable side, at a boundary between the movable side and the fixed side, in a direction orthogonal to the mold opening direction. A first slide piece that can move forward and backward, and seals the other end of the first cavity and the second sprue when moving forward, and can move up and down in the mold opening direction, rises when the first slide piece retreats, A second cavity and a second gate respectively communicating with the other end of the cavity and the second sprue,
And a second slide piece provided in a form communicating with each other inside, and slidably engages with the second slide piece below the second slide pieces by means of unevenness formed on mutually inclined surfaces. And
An injection molding die for composite molding, in which a third slide piece that moves up and down the second slide piece by moving back and forth in a direction orthogonal to the mold opening direction is installed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9085221A JP3051901B2 (en) | 1997-04-03 | 1997-04-03 | Injection mold for composite molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9085221A JP3051901B2 (en) | 1997-04-03 | 1997-04-03 | Injection mold for composite molding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10278076A true JPH10278076A (en) | 1998-10-20 |
JP3051901B2 JP3051901B2 (en) | 2000-06-12 |
Family
ID=13852521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9085221A Expired - Lifetime JP3051901B2 (en) | 1997-04-03 | 1997-04-03 | Injection mold for composite molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3051901B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875168A1 (en) * | 2004-12-29 | 2006-03-17 | Faurecia Interieur Ind Snc | Two-colour injection mold for motor vehicle interior components has two shells with cavities for different injection regions |
EP1690665A1 (en) * | 2005-02-14 | 2006-08-16 | Moritz-Production Innovation in Kunststoff GmbH | Process and injection mould for manufacturing a plastic strip |
JP2008055612A (en) * | 2006-08-29 | 2008-03-13 | Bridgestone Corp | Injection molding machine |
JP2008055614A (en) * | 2006-08-29 | 2008-03-13 | Bridgestone Corp | Injection molding machine |
JP2008195059A (en) * | 2007-01-16 | 2008-08-28 | Oshima Denki Seisakusho:Kk | Injection molded object, its manufacturing method and mold for manufacturing injection molded object |
WO2009049435A1 (en) * | 2007-10-19 | 2009-04-23 | Weidmann Plastics Technology Ag | Method for the production of multicomponent plastic parts, injection molding tool, and plastic part produced according to said method |
JP2009143015A (en) * | 2007-12-11 | 2009-07-02 | Denso Corp | Mold device |
US10759332B2 (en) | 2016-01-14 | 2020-09-01 | Weidplas Gmbh | Component comprising a flat decorative element and housing |
-
1997
- 1997-04-03 JP JP9085221A patent/JP3051901B2/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875168A1 (en) * | 2004-12-29 | 2006-03-17 | Faurecia Interieur Ind Snc | Two-colour injection mold for motor vehicle interior components has two shells with cavities for different injection regions |
EP1690665A1 (en) * | 2005-02-14 | 2006-08-16 | Moritz-Production Innovation in Kunststoff GmbH | Process and injection mould for manufacturing a plastic strip |
JP2008055612A (en) * | 2006-08-29 | 2008-03-13 | Bridgestone Corp | Injection molding machine |
JP2008055614A (en) * | 2006-08-29 | 2008-03-13 | Bridgestone Corp | Injection molding machine |
JP2008195059A (en) * | 2007-01-16 | 2008-08-28 | Oshima Denki Seisakusho:Kk | Injection molded object, its manufacturing method and mold for manufacturing injection molded object |
WO2009049435A1 (en) * | 2007-10-19 | 2009-04-23 | Weidmann Plastics Technology Ag | Method for the production of multicomponent plastic parts, injection molding tool, and plastic part produced according to said method |
JP2009143015A (en) * | 2007-12-11 | 2009-07-02 | Denso Corp | Mold device |
US10759332B2 (en) | 2016-01-14 | 2020-09-01 | Weidplas Gmbh | Component comprising a flat decorative element and housing |
Also Published As
Publication number | Publication date |
---|---|
JP3051901B2 (en) | 2000-06-12 |
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