JPH01317731A - Connection structure and method for resin molded member - Google Patents
Connection structure and method for resin molded memberInfo
- Publication number
- JPH01317731A JPH01317731A JP15047388A JP15047388A JPH01317731A JP H01317731 A JPH01317731 A JP H01317731A JP 15047388 A JP15047388 A JP 15047388A JP 15047388 A JP15047388 A JP 15047388A JP H01317731 A JPH01317731 A JP H01317731A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding
- protrusion
- connection part
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 23
- 239000011347 resin Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 13
- 238000000465 moulding Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 239000013466 adhesive and sealant Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 238000004078 waterproofing Methods 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
-
- 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
- B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
-
- 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
- B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
- B29C2045/1667—Deformation bonds
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
皮栗上立■且分監
本発明は少くとも一方が樹脂成形部材である部材同士の
結合構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for connecting members, at least one of which is a resin molded member.
皿來立茨五
以下、このような結合構造をカメラの外装カバーとそれ
に結合される透明板等の外装部品を例に挙げて説明する
。Hereinafter, such a coupling structure will be explained using an example of an exterior cover of a camera and exterior parts such as a transparent plate coupled thereto.
第９図に示すようにカメラの前面カバー（３４）にはレ
ンズカバー窓（３５）やファインダ対物窓（３６）、閃
光装置の発光部窓（３７）等が形成され、これらの窓に
それぞれ所定の成形部材が結合される。そして、その結
合構造はレンズカバー窓（３５）に関して示す第１０図
（ａ）〜（ｄ）の如く、いくつかの方法が存在する。As shown in FIG. 9, the front cover (34) of the camera is formed with a lens cover window (35), a finder objective window (36), a light emitting unit window (37) for the flash device, etc. molded parts are joined together. There are several methods of connecting the lens cover window (35), as shown in FIGS. 10(a) to 10(d).
まず、その１つは第１０図（ａ）に示すようにインサー
ト成形での部品の一体化による結合構造である。即ち、
組み込み部品としての透明板（３８）の全周にアンダー
カットを設け、この透明板（３８）を金型内に保持した
状態で、その回りに樹脂を流し込んで前面カバー（３４
）を成形する方法によって前面カバー（３４）と透明板
（３８）とを結合する構造である。First, as shown in FIG. 10(a), there is a joint structure in which parts are integrated by insert molding. That is,
An undercut is provided around the entire circumference of the transparent plate (38) as an integrated part, and while the transparent plate (38) is held in the mold, resin is poured around it to form the front cover (34).
) The front cover (34) and the transparent plate (38) are combined by a method of forming a transparent plate (38).
第２は、（ｂ）に示すように透明板（３８）の全周に接
着材（３９）を塗布し、この接着剤によって前面カバー
（３４） 上透明板（３Ｂ）七の一体化を行った構造で
ある。Second, as shown in (b), adhesive (39) is applied to the entire circumference of the transparent plate (38), and the front cover (34) and upper transparent plate (3B) are integrated with this adhesive. It has a similar structure.
第３は、（ｃ）の如く透明板（３８）と前面カバー（３
４）を嵌合した状態で超音波等を加えて、それらの周辺
部を部分的に溶かして溶着するという熱溶着による結合
構造である。The third is the transparent plate (38) and the front cover (3) as shown in (c).
4) is a bonding structure using thermal welding, in which ultrasonic waves or the like are applied to the fitted state to partially melt and weld the peripheral parts.
ところで、防水カメラの場合においては、上記前面カバ
ー（３４）と透明板（３８）の関係は単に２物品を結合
するというだけでなく、防水効果も生じるように結合す
ることが要求され、そのため（ｂ）での接着剤や（ｃ）
での熱溶着は結合部の全周にわたって施されるのが普通
である。このような防水という観点からは、（ｄ）の如
くパツキン（４０） （４１）’を用いる構造も挙げら
れる。この構造は前面カバー（３４）、並びに補助カバ
ー（４２）にそれぞれ凹所を形成すると共に、これらの
凹所にパツキン（４０） （４１）を嵌め込んだ状態で
前面カバー（３４）と補助カバー（４２）を適当な方法
で結合する。By the way, in the case of a waterproof camera, the relationship between the front cover (34) and the transparent plate (38) is required not only to connect two articles, but also to create a waterproof effect. Adhesive in b) and (c)
Thermal welding is usually performed around the entire circumference of the joint. From the viewpoint of such waterproofing, a structure using gaskets (40) and (41)' as shown in (d) can also be mentioned. This structure forms recesses in each of the front cover (34) and the auxiliary cover (42), and with the gaskets (40) and (41) fitted into these recesses, the front cover (34) and the auxiliary cover are opened. (42) are combined using an appropriate method.
が”° しようと る課
しかしながら、前記（ｂ） （ｄ）の構造は、接着剤や
パツキン（シール材）等の副資材を必要とする欠点があ
り、組立ての作業性も著しく悪い。又、（Ｃ）の構造は
樹脂成形品に熱という別エネルギーを加える溶着工程を
必要とする。しかも、これらの（ｂ） （ｃ） （ｄ）
−の結合構造は予め２つの結合すべき成形部材を作成し
た後でなければ実現できない。However, the structures in (b) and (d) above have the disadvantage of requiring auxiliary materials such as adhesives and sealants, and the workability of assembly is also extremely poor. Structure (C) requires a welding process that applies additional energy called heat to the resin molded product.Moreover, these (b) (c) (d)
- can only be realized after the two molded parts to be joined have been created in advance.
そして、（ａ）の結合構造は一方の成形部材の成形用金
型内で結合を行うものの、その前提として必ず組み込み
部品を作成しておかなければならないと共に、金型にア
ンダーカット構造を設けなければならない。In the joining structure of (a), the joining is performed within the molding die for one of the molded members, but as a prerequisite, the built-in parts must be created and an undercut structure must be provided in the mold. Must be.
このように従来の結合構造は、多くの組立て工数や副資
材が必要となり、組立て作業の自動化や部品点数の削減
という点で難点があった。その上、例えば（ａ）の構造
で一番強度が高くなるのはアンダーカット部の肉厚を全
体の肉厚（１）の１７３に選んだときである（第１１図
参照）から、特に薄型部材の場合にはこの部分が薄くな
ってしまい強度が充分でないという問題もあった。As described above, conventional joint structures require a large amount of assembly man-hours and auxiliary materials, and are difficult to automate assembly operations and reduce the number of parts. Furthermore, for example, the structure of (a) has the highest strength when the thickness of the undercut part is selected to be 173 of the total thickness (1) (see Figure 11), so it is especially thin. In the case of a member, there was also the problem that this part became thin and did not have sufficient strength.
それ故に、本発明の目的はこれらの問題を払拭した新規
且つ有効な結合構造を提供することにある。Therefore, it is an object of the present invention to provide a new and effective coupling structure that eliminates these problems.
ｉ ′ るための
上記の目的を達成するため本発明の結合方法では、第１
接合部を有する第１部材と、前記第１接合部に接合する
第２接合部を有する熱可塑性の第２部材とを多材又は多
色成形により一体成形する結合方法において、前記第１
部材の第１接合部に突起を形成した後、上記第２部材成
形時に第２部材の流動圧力及び温度により前記突起を変
形させて前記第２接合部に対する離脱止め部を形成する
ようにしている。In order to achieve the above-mentioned purpose of
In the joining method of integrally molding a first member having a joint part and a thermoplastic second member having a second joint part joined to the first joint part by multi-material or multicolor molding, the first member
After a protrusion is formed on the first joint of the member, the protrusion is deformed by the flow pressure and temperature of the second member during molding of the second member to form a detachment preventing portion for the second joint. .
また、本発明では、突起状の接合部を有する第１部材を
、それと接合する第２部材成形用の金型内にインサート
し、第２部材成形時に該第２部材の流動圧力及び温度に
より上記突起を変形させて前記第１部材と第２部材とを
接合するようにしてもよい。Further, in the present invention, a first member having a protruding joint portion is inserted into a mold for molding a second member to be joined to the first member, and when molding the second member, the flow pressure and temperature of the second member cause the above-mentioned The first member and the second member may be joined by deforming the protrusion.
一方、本発明の結合構造としては、第１部材のＬ字状の
突起を囲繞するように熱可塑性の第２部材が第１部材と
結合した構成となっている。On the other hand, the coupling structure of the present invention is such that a thermoplastic second member is coupled to the first member so as to surround the L-shaped protrusion of the first member.
作−里
上記本発明の結合方法によれば、第２部材の成形の際に
第１部材の突起が変形した状態で第１部材と第２部材が
結合される。その結果、もともと金型にアンダーカット
構造がないにも拘わらず部材の結合部にアンダーカット
構造が形成される。According to the above-described joining method of the present invention, the first member and the second member are joined with the protrusion of the first member deformed during molding of the second member. As a result, an undercut structure is formed at the joining portion of the members even though the mold originally does not have an undercut structure.
また、本発明の結合構造では第１部材のＬ字状の突起と
それを囲繞する第２部材とによって第１゜第２部材の結
合が強固になっている。Further, in the coupling structure of the present invention, the L-shaped protrusion of the first member and the second member surrounding it make the coupling between the first and second members strong.
叉」Ｌ勇 以下、本発明の実施例を図面を参照して説明する。叉” L Yu Embodiments of the present invention will be described below with reference to the drawings.
第１図（ａ）において、第１部材（１）は第２部材成形
用の金型（３）内に図示のように固定配置される、この
第１部材（１）は例えば樹脂成形部材から形成されたも
のであるが、これに限ることなく、弾性のある金属やガ
ラス、ゴム等で形成されたものであってもよい、第１部
材（１）の接合部（４）には凹部（５）を形成するよう
に突起（６）が設けられている。In FIG. 1(a), a first member (1) is fixedly arranged as shown in a mold (3) for molding a second member.This first member (1) is made of, for example, a resin molded member. The joint part (4) of the first member (1) has a recess ( A projection (6) is provided so as to form a projection (5).
第１部材（１）を金型（３）内に固定した状態で溶融し
た第２部材用の熱可塑性樹脂（２′）を図の右方から左
方へ向けてキャビティ（７）内に流し込む。With the first member (1) fixed in the mold (3), melted thermoplastic resin (2') for the second member is poured into the cavity (7) from the right to the left in the figure. .
図において、Ｐは前記樹脂（２゛）の流動圧力を示して
いる。前記樹脂（２゛）は成形の際にその流動圧力と高
温・高熱を有しているため、第１図（ｂ）の如く第１部
材（１）に到達すると、第１部材（１）の突起（６）を
軟化し、これを曲げ始める。このとき、突起（６）は点
（０）を中心として片持ち支持での変形を起こす。In the figure, P indicates the flow pressure of the resin (2゛). Since the resin (2) has fluid pressure and high temperature during molding, when it reaches the first member (1) as shown in FIG. Soften the protrusion (6) and begin to bend it. At this time, the protrusion (6) is deformed by being supported on a cantilever centering on the point (0).
この変形状態のまま樹脂（２′）が全ての空間に流入し
、固化すると、同図（ｃ）の如く第１部材（１）と第２
部材（２）の結合部にはアンダーカット形状が実現され
、両者間の結合は極めて強固なものとなる。When the resin (2') flows into all the spaces in this deformed state and solidifies, the first member (1) and the second member
An undercut shape is realized at the joint of the member (2), and the joint between the two becomes extremely strong.
第２図は上述の結合方法を第１．第２成形部材（１）
（２）の引続く成形と共に、実現する様子を示している
。まず、同図（１）においてＡ金型（９） とＢ金型（
１０）を衝合して形成される第１キヤビテイ（１１）内
に熱可塑性樹脂を射出して第１成形部材（１）を形成す
る０次にＢ金型（１０）を右方向へ後退させると共に、
Ａ金型（９）を同図（ｉｉ）に示す如く軸（１２）の回
りに１８０１回転する。しかる後、Ｂ金型（１０）を再
び衝合し第２キヤビテイ（１３）内に熱可塑性樹脂を射
出する（ （ｉｉｉ）参照〕と、第１成形部材（１）の
周囲に第２成形部材（２）が形成される。このとき、第
１キヤビテイ（１１）では次の第１成形部材（１゛）を
成形している。最後に、 （ｉｖ）で結合品（１４）の
みを分離する。同一の金型を使って一連の動作により本
発明の結合構造を実現するに当たり、第４図に示したコ
ア回転方式だけでなく、所謂コアバック方式によっても
、成形することができる。その場合には、同一のキャビ
ティ内で第１、第２成形部材を成形することになる。FIG. 2 shows the above-mentioned coupling method in the first embodiment. Second molded member (1)
This figure shows how this is achieved along with the subsequent molding of (2). First, in the same figure (1), mold A (9) and mold B (
10) and inject thermoplastic resin into the first cavity (11) formed by colliding them to form the first molded member (1).The B mold (10) is moved back to the right. With,
The mold A (9) is rotated 1801 times around the axis (12) as shown in (ii) of the same figure. After that, when the B mold (10) is brought together again and the thermoplastic resin is injected into the second cavity (13) (see (iii)), a second molded member is formed around the first molded member (1). (2) is formed.At this time, the next first molded member (1゛) is molded in the first cavity (11).Finally, in (iv) only the bonded product (14) is separated. When realizing the joint structure of the present invention through a series of operations using the same mold, molding can be performed not only by the core rotation method shown in Fig. 4 but also by the so-called core-back method. In this case, the first and second molded members are molded in the same cavity.
第３図は上記方法によって結合がなされた製品の一部を
示しており、この実施例では第１部材（１）は第２部材
（２）の透孔（１５）を施蓋する部材として機能してい
る。従って、特にこれに限ることはないが、例えば第２
部材（２）をカメラのカバーとした場合、第１部材（１
）を透明な外装部材とすることができる。尚、第１部材
（１）と第２部材（２）の結合は第２部材（２）の成形
に伴ない実現されるので結合部における両者間の密着性
は十分となり、防止効果も実現される。FIG. 3 shows a part of the product joined by the above method, and in this example, the first member (1) functions as a member that covers the through hole (15) of the second member (2). are doing. Therefore, although it is not particularly limited to this, for example, the second
When the member (2) is used as a camera cover, the first member (1
) can be used as a transparent exterior member. In addition, since the connection between the first member (1) and the second member (2) is realized as the second member (2) is molded, the adhesion between the two at the joint is sufficient, and the prevention effect is also achieved. Ru.
上記第１部材（１）の結合部（４）の形状及びその突起
（６）の形状としては種々考えられるが、そのうち代表
的なものを第４図及び第５図に示す、第４図は第１部材
（１）を金型（３）内に配置した状態で示しており、（
ａ） （ｄ）は側断面図、 （ｂ） （ｃ） （ｅ）
（ｆ）は上面図である。斜線はいずれも第１部材（１）
を表わしている。また、矢印（１６）は第１図における
第２部材用の溶融樹脂（２゛）の流動方向を示す、（ａ
）及び（ｂ）は突起（６）が第１部材（１）の一端部に
おいて第１部材（１）の幅（賀） と同じ長さにわたっ
で形成された例であり、（ｃ）は３種類の突起（６”）
（６’）（６’）が間隔をおいて第１部材（１）の幅方
向に並んだ場合である。また、（ｄ） （ｅ）は突起（
６）が第１部材（１）の端部でなく、途中に設けられた
例であり、突起（６）は幅（賀）−杯に形成されている
。（ｆ）は（ｅ）の突起（６）の代りに３種類の突起（
６’）（６’）（６’）を並べた例である。突起の形状
例は第５図に示されるが、これらの突起は第２部材の成
形時に変形して接合部にアンダーカット構造をもたらす
ことになる。There are various possible shapes of the connecting part (4) of the first member (1) and the shape of its protrusion (6), among which representative ones are shown in FIGS. 4 and 5. The first member (1) is shown placed in the mold (3), and (
a) (d) is a side sectional view, (b) (c) (e)
(f) is a top view. All diagonal lines are the first member (1)
It represents. Further, the arrow (16) indicates the flow direction of the molten resin (2゛) for the second member in FIG.
) and (b) are examples in which the protrusion (6) is formed at one end of the first member (1) over the same length as the width of the first member (1), and (c) is 3 types of protrusions (6”)
(6') (6') are arranged at intervals in the width direction of the first member (1). Also, (d) and (e) are protrusions (
6) is provided not at the end of the first member (1) but in the middle, and the protrusion (6) is formed to have a width of (6) - cup. (f) has three types of protrusions (6) in place of the protrusion (6) in (e).
This is an example of arranging 6')(6')(6'). An example of the shape of the protrusions is shown in FIG. 5, and these protrusions deform during molding of the second member, resulting in an undercut structure at the joint.
次に、上記突起の撓み量との関係を第６図の例を参照し
て説明する。第６図に示すように突起（６）を、縦の長
さがす、横の長さがり、高さが！の直方体形状とした場
合、樹脂（２″）の流動圧力Ｐが加わると、撓み量δは
断面の二次モーメントＩは
ｂｈ’
Ｉ＝−
となる、但し、Ｅは実際の曲げ弾性率である。ここで、
第１部材（１） としてＰＣ（ポリカーボネイト）、第
２部材としてＡＢＳ（アクリロニトリル・ブタジェン・
スチレン）樹脂を使用し、更にｂ−ｈ ＝ １ ａｍ
、 ｌ −２，５１１ｍ、 Ｐ −２００ｋｇｆ／
ｃｍ”とした場合に、第１部材（１）の接合部の温度Ｔ
を変えて、撓み量δを求めると、
Ｔ寓２０℃のとき δ−０，５０＋ｕｅＴ−１００℃
のとき δ−０．６３ａｕｗＴ−２００℃のとき δ＝
０．８３ｓ＋ｍとなった。第７図は上記第１部材（１）
の材料として使用したポリカーボネイトの温度に対する
曲げ弾性率の関係を示している。Next, the relationship between the amount of deflection of the projection and the amount of deflection will be explained with reference to the example shown in FIG. As shown in Figure 6, find the length, width, and height of the protrusion (6)! In the case of a rectangular parallelepiped shape, when the flow pressure P of resin (2'') is applied, the amount of deflection δ and the moment of inertia I of the cross section become bh' I=-, where E is the actual bending elastic modulus .here,
The first member (1) is PC (polycarbonate), and the second member is ABS (acrylonitrile butadiene).
styrene) resin, and further b-h = 1 am
, l -2,511m, P -200kgf/
cm", the temperature T of the joint part of the first member (1)
When the amount of deflection δ is calculated by changing the
When δ-0.63auwT-200℃ δ=
It became 0.83s+m. Figure 7 shows the above first member (1)
The figure shows the relationship between the flexural modulus and the temperature of polycarbonate used as a material.
上記各部材の材料としては上述のＰＣ，ＡＢＳをはじめ
、ＡＢＳ＋ＰＳ、ＡＳ （アクリロニトリル・スチレン
共重合体）、ＰＭＭＡ （ポリメタクリル酸メチル）、
ＰＢＴ（ポリブチレンチレフタレ−））、ＰＯＭ（ポリ
オキシメチレン）等の熱可塑性樹脂及びオレフィン系、
ウレタン系、エステル系等のエラストマーの殆ど全ての
組合せが可能である。但し、第１部材（１）の熱変形温
度ＴＡは第２部材の成形金型温度Ｔ□より高くなければ
ならない、従って、Ｔａ＞Ｔａｍとなるように樹脂成形
材料を選定しなければならない、その組み合せの事例を
次表に示す。The materials for each of the above members include the above-mentioned PC, ABS, ABS+PS, AS (acrylonitrile-styrene copolymer), PMMA (polymethyl methacrylate),
Thermoplastic resins and olefins such as PBT (polybutylene terephthalate) and POM (polyoxymethylene),
Almost all combinations of urethane-based, ester-based, etc. elastomers are possible. However, the heat distortion temperature TA of the first member (1) must be higher than the mold temperature T□ of the second member. Therefore, the resin molding material must be selected so that Ta>Tam. Examples of combinations are shown in the table below.
尚、先にも述べたように第１部材の材料については樹脂
だけなく、金属、ガラス、ゴム等も可能である。As mentioned above, the material of the first member is not limited to resin, but may also be metal, glass, rubber, etc.
最後に、第８図は矢印で示す樹脂の流動方向に対する突
起（６）の良好な変形の可否を突起（６）の位置と形状
に応じて調べたものであって、金型（３）のゲー） （
１７）から流入した樹脂に対し各位置の突起の変形が良
好である場合は白抜きで示し、不良若しくは変形不可の
場合は斜線を入れて示している。Finally, FIG. 8 shows whether the protrusion (6) can be properly deformed in the flow direction of the resin shown by the arrow, depending on the position and shape of the protrusion (6). game) (
17) If the deformation of the protrusion at each position is good with respect to the resin that has flowed in from 17), the deformation of the protrusion at each position is shown in white, and if it is defective or cannot be deformed, it is shown with diagonal lines.
１里坐並果
本発明によれば、第１．第２部材の結合は第２部材の成
形時に行われるので結合に接着剤やパラチン等の副資材
を必要としないと共に超音波等の別エネルギーを要する
こともないので、作業工数や部品点数が少な（自動化に
大きく寄与できる。1. According to the present invention, 1. The joining of the second member is done when the second member is molded, so there is no need for auxiliary materials such as adhesives or paratin, and no additional energy such as ultrasonic waves is required for joining, so the number of man-hours and number of parts is reduced. (It can greatly contribute to automation.
しかも、接合部にアンダーカットが生じるので、結合が
極めて強固になる。そして、そのアンダーカットは第１
部材の突起の変形により生成されるので、金型にアンダ
ーカット構造を必要とすることがなく、金型に対する余
計な費用や負担を強いるということがない、また、成形
により結合が行われるので、両部材の密着性もよく、防
水上の効果も得られる。しかも接合部の肉厚を十分に厚
く形成することも可能であり、強度的にも優れる。Moreover, since an undercut occurs at the joint, the joint becomes extremely strong. And that undercut is the first
Since it is generated by the deformation of the protrusion of the member, there is no need for an undercut structure in the mold, and there is no need to impose unnecessary costs or burdens on the mold.Furthermore, since the joining is performed by molding, The adhesion between both members is good, and a waterproof effect can also be obtained. Furthermore, it is possible to form the joint portion sufficiently thick, and the strength is also excellent.
第１図及び第２図は本発明の結合方法を示す図である。
第３図は本発明によって得られた結合構造を有する製品
の要部を示す斜視図である。第４図は本発明において用
いる第１部材の接合部の具体例を示す図であり、第５図
はその突起の各種形状を示す図である。第６図、第７図
及び第８図は本発明による突起の変形に関して説明する
ための図である。第９図、第１０図及び第１１図は従来
例を示す図である。
（１）−・−・第１部材、（２）・・−第２部材。
（３）・・・・金型、（６）−・−突起。FIGS. 1 and 2 are diagrams showing the coupling method of the present invention. FIG. 3 is a perspective view showing the main parts of a product having a bonding structure obtained by the present invention. FIG. 4 is a diagram showing a specific example of the joint portion of the first member used in the present invention, and FIG. 5 is a diagram showing various shapes of the protrusion. FIG. 6, FIG. 7, and FIG. 8 are diagrams for explaining the deformation of the protrusion according to the present invention. FIG. 9, FIG. 10, and FIG. 11 are diagrams showing conventional examples. (1)--first member, (2)--second member. (3)...Mold, (6)---Protrusion.
Claims (3)
に接合する第２接合部を有する熱可塑性の第２部材とを
多材又は多色成形により一体成形する結合方法において
、前記第１部材の第１接合部に突起を形成した後、上記
第２部材成形時に第２部材の流動圧力及び温度により前
記突起を変形させて前記第２接合部に対する離脱止め部
を形成することを特徴とする樹脂成形部材の結合方法。(1) A joining method in which a first member having a first joint part and a thermoplastic second member having a second joint part joined to the first joint part are integrally molded by multi-material or multi-color molding, After forming a protrusion on the first joint portion of the first member, the protrusion is deformed by the flow pressure and temperature of the second member during molding of the second member to form a detachment preventing portion for the second joint portion. A method for joining resin molded parts, characterized by:
する第２部材成形用の金型内にインサートし、第２部材
成形時に該第２部材の流動圧力及び温度により上記突起
を変形させて前記第１部材と第２部材とを接合すること
を特徴とする樹脂成形部材の結合方法。(2) A first member having a protruding joint part is inserted into a mold for molding a second member to be joined to the first member, and the protrusion is deformed by the flow pressure and temperature of the second member when molding the second member. A method for joining resin molded members, characterized in that the first member and the second member are joined together.
性の第２部材が第１部材と結合していることを特徴とす
る樹脂成形部材の結合構造。(3) A bonding structure for resin molded members, characterized in that a thermoplastic second member is bonded to the first member so as to surround the L-shaped protrusion of the first member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15047388A JPH01317731A (en) | 1988-06-17 | 1988-06-17 | Connection structure and method for resin molded member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15047388A JPH01317731A (en) | 1988-06-17 | 1988-06-17 | Connection structure and method for resin molded member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01317731A true JPH01317731A (en) | 1989-12-22 |
Family
ID=15497672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15047388A Pending JPH01317731A (en) | 1988-06-17 | 1988-06-17 | Connection structure and method for resin molded member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01317731A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019209481A (en) * | 2018-05-31 | 2019-12-12 | 株式会社デンソー | Method for producing two-color molded product |
| JP2020093422A (en) * | 2018-12-11 | 2020-06-18 | コギトケミカル株式会社 | Molding method and metal mold |
| JP2020093554A (en) * | 2020-03-07 | 2020-06-18 | コギトケミカル株式会社 | Molded body and container |
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| JPH0286689A (en) * | 1988-09-24 | 1990-03-27 | Dainippon Ink & Chem Inc | Liquid crystal device |
| JPH03215591A (en) * | 1989-07-06 | 1991-09-20 | Sharp Corp | Nematic liquid crystal composition |
| JPH03245120A (en) * | 1990-02-23 | 1991-10-31 | Nec Corp | Liquid crystal display material and production thereof |
| JPH03506035A (en) * | 1989-05-15 | 1991-12-26 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | Chlorobenzene derivatives |
| JPH04122910A (en) * | 1990-09-13 | 1992-04-23 | Toppan Printing Co Ltd | Liquid crystal display device |
| JPH04226589A (en) * | 1990-09-05 | 1992-08-17 | Sharp Corp | Nematic liquid crystal composition |
| JPH04504880A (en) * | 1990-01-10 | 1992-08-27 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | matrix lcd display |
| JPH04506376A (en) * | 1990-04-03 | 1992-11-05 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | liquid crystal medium |
| JPH05501895A (en) * | 1990-10-02 | 1993-04-08 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | liquid crystal medium |
| JPH05105878A (en) * | 1991-03-13 | 1993-04-27 | Merck Patent Gmbh | Electro-optical system |
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1988
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558154U (en) * | 1978-06-30 | 1980-01-19 | ||
| JPH0286689A (en) * | 1988-09-24 | 1990-03-27 | Dainippon Ink & Chem Inc | Liquid crystal device |
| JPH03506035A (en) * | 1989-05-15 | 1991-12-26 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | Chlorobenzene derivatives |
| JPH03215591A (en) * | 1989-07-06 | 1991-09-20 | Sharp Corp | Nematic liquid crystal composition |
| JPH04504880A (en) * | 1990-01-10 | 1992-08-27 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | matrix lcd display |
| JPH03245120A (en) * | 1990-02-23 | 1991-10-31 | Nec Corp | Liquid crystal display material and production thereof |
| JPH04506376A (en) * | 1990-04-03 | 1992-11-05 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | liquid crystal medium |
| JPH04226589A (en) * | 1990-09-05 | 1992-08-17 | Sharp Corp | Nematic liquid crystal composition |
| JPH04122910A (en) * | 1990-09-13 | 1992-04-23 | Toppan Printing Co Ltd | Liquid crystal display device |
| JPH05501895A (en) * | 1990-10-02 | 1993-04-08 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | liquid crystal medium |
| JPH05105878A (en) * | 1991-03-13 | 1993-04-27 | Merck Patent Gmbh | Electro-optical system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019209481A (en) * | 2018-05-31 | 2019-12-12 | 株式会社デンソー | Method for producing two-color molded product |
| JP2020093422A (en) * | 2018-12-11 | 2020-06-18 | コギトケミカル株式会社 | Molding method and metal mold |
| JP2020093554A (en) * | 2020-03-07 | 2020-06-18 | コギトケミカル株式会社 | Molded body and container |
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