JP2991764B2 - Welding method of resin moldings - Google Patents
Welding method of resin moldingsInfo
- Publication number
- JP2991764B2 JP2991764B2 JP29403590A JP29403590A JP2991764B2 JP 2991764 B2 JP2991764 B2 JP 2991764B2 JP 29403590 A JP29403590 A JP 29403590A JP 29403590 A JP29403590 A JP 29403590A JP 2991764 B2 JP2991764 B2 JP 2991764B2
- Authority
- JP
- Japan
- Prior art keywords
- ridges
- flange portion
- hot plate
- contact
- resin molded
- 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 - Fee Related
Links
- 239000011347 resin Substances 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 title claims description 24
- 238000003466 welding Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 9
- 238000000465 moulding Methods 0.000 title description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920013716 polyethylene resin 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は樹脂成形体同士の溶着方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for welding resin moldings.
（従来の技術） 樹脂成形体同士、例えば樹脂製の比較的大面積の成形
体のフランジ部同士又は大面積の成形体のフランジ部に
小物成形体のフランジ部を溶着する場合、各成形体のフ
ランジ部をそれぞれ熱板に当接せしめて加熱し、各フラ
ンジ部が溶融状態になった段階でフランジ部同士を圧接
して互いに溶着する方法が採用されている。(Prior Art) When welding the flanges of small molded articles to each other, for example, to the flanges of a relatively large area molded article made of resin or to the flange of a large area molded article made of resin. A method is employed in which the flanges are brought into contact with a hot plate and heated, and when the respective flanges are in a molten state, the flanges are pressed against each other and welded to each other.
（発明が解決しようとする課題） しかるに、第６図及び第７図に示すように、樹脂成形
体ａのフランジ部ｂを熱板ｃに当接させて加熱する場
合、フランジ部ｂには凹凸や歪みがあるので、第６図に
示すようにフランジ部ｂが熱板ｃに当接しなかったり、
或いは第７図に示すようにフランジ部ｂが局部的にしか
熱板ｃに当接しないことがある。このためフランジ部ｂ
に十分に溶融しない箇所が生じて樹脂成形体同士の溶着
が不完全となる場合がある。(Problems to be Solved by the Invention) However, as shown in FIGS. 6 and 7, when the flange portion b of the resin molded body a is brought into contact with the hot plate c and heated, the flange portion b has irregularities. And the flange b does not contact the hot plate c as shown in FIG.
Alternatively, as shown in FIG. 7, the flange portion b may abut on the hot plate c only locally. Therefore, the flange b
May not be sufficiently melted, and the welding between the resin moldings may be incomplete.
前記に鑑みて、本発明は、樹脂成形体のフランジ部に
凹凸や歪みがあっても、フランジ部が均等に加熱されて
萬遍なく溶融されるようにし、これにより得られる樹脂
成形体における不完全溶着部の発生を防止することを目
的とする。In view of the foregoing, the present invention provides a method for manufacturing a resin molded product obtained by uniformly heating and uniformly melting the flange portion even if the flange portion of the resin molded product has irregularities or distortion. It is intended to prevent the occurrence of a completely welded portion.
（課題を解決するための手段） 前記の目的を達成するため、本発明は、各フランジ部
に熱板に当接すると速やかに溶融して背が低くなる凸条
を設けることにより、当初熱板に当接していなかったフ
ランジ部の凸条を速やかに熱板に当接せしめるものであ
る。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides an initial heating plate by providing a ridge that quickly melts and becomes short when it comes into contact with the heating plate on each flange portion. The protrusions of the flange portion, which have not been in contact with the plate, are immediately brought into contact with the hot plate.
具体的に、本発明が講じた解決手段は、それぞれがフ
ランジ部を有する樹脂成形体同士の溶着方法を対象と
し、樹脂成形体の各フランジ部のほぼ中央に、フランジ
部に沿って連続して又は断続的に延びる凸条を設けてお
く工程と、フランジ部の凸条をそれぞれ熱板に当接させ
て加熱することにより、凸条を介して伝達される熱によ
って、フランジ部を凸条が消滅する程度に溶融状態にさ
せる工程と、溶融状態のフランジ部同士を、互いに対向
させた状態で圧接することにより溶着させる工程とを備
えている構成とするものである。Specifically, the solution taken by the present invention is directed to a method of welding resin molded products each having a flange portion, substantially at the center of each flange portion of the resin molded product, continuously along the flange portion. Or, by providing a protruding ridge that extends intermittently, and by heating the ridges of the flange portion by contacting the ridges with the hot plate, the ridges of the flange portion are formed by the heat transmitted through the ridges. It is configured to include a step of melting the flanges to such an extent that the flanges disappear, and a step of welding the flanges in the molten state by pressing them in a state of facing each other.
（作用） 前記の構成により、樹脂成形体のフランジ部のほぼ中
央に連続して又は断続的に延びる凸条が設けられている
ため、フランジ部に凹凸や歪みがあり、熱板に当接して
いる凸条と当接していない凸条があっても、熱板に当接
している凸条は熱板から吸熱し速やかに溶融して背が低
くなるので、熱板に当接していなかった凸条が熱板に当
接するようになる。(Operation) With the configuration described above, since the convex portion extending continuously or intermittently is provided substantially at the center of the flange portion of the resin molded body, the flange portion has irregularities and distortion, and is in contact with the hot plate. Even if there are ridges that are not in contact with the ridges that are not in contact with the hot plate, the ridges that are in contact with the hot plate absorb heat from the hot plate and quickly melt and become shorter, so the ridges that did not touch the hot plate The strip comes into contact with the hot plate.
このため、第３図に示すように、凸条を介して熱が伝
導されるので、フランジ部が均等に加熱されて溶融状態
となる。この場合、フランジ部には凸条が設けられてい
るが、第４図に示すように、凸条は溶着時には溶融して
フランジ部と一体化されて消滅するので溶着の妨げには
ならない。For this reason, as shown in FIG. 3, since heat is conducted through the ridges, the flange portions are uniformly heated and brought into a molten state. In this case, the flange portion is provided with a ridge, but as shown in FIG. 4, the ridge melts during welding and is integrated with the flange portion and disappears, so that it does not hinder welding.
（実施例） 以下、本発明の実施例を図面に基づいて説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
まず、第１図及び第２図に示すように、樹脂成形体１
のフランジ部２の被溶着部３に、フランジ部２に沿って
連続して又は断続的に延びる凸条４を一体成形により設
けておいた後、被溶着部３の凸条４を熱板５に当接させ
て該被溶着部３を加熱する。この場合の加熱温度は樹脂
の溶融温度より少し高い温度に設定する。例えば、溶融
温度が200℃であるポリエチレン樹脂からなる樹脂成形
体同士を溶着する場合には、熱板５の温度を210℃程度
に設定する。First, as shown in FIG. 1 and FIG.
After the ridges 4 extending continuously or intermittently along the flange portion 2 are provided on the welded portion 3 of the flange portion 2 by integral molding, the ridges 4 of the welded portion 3 are attached to the hot plate 5. , And the welded portion 3 is heated. The heating temperature in this case is set to a temperature slightly higher than the melting temperature of the resin. For example, when welding resin molded bodies made of polyethylene resin having a melting temperature of 200 ° C., the temperature of the hot plate 5 is set to about 210 ° C.
前述のようにして被溶着部３を加熱すると、被溶着部
３に凹凸や歪みがない場合には、第１図に示すように凸
条４が萬遍なく熱板５に当接し、被溶着部３が均等に加
熱されるので、第４図に示すように、凸条４を介して熱
が伝わり被溶着部３は萬遍なく溶融して凸条４は消滅す
る。When the welded portion 3 is heated as described above, if there is no unevenness or distortion in the welded portion 3, the ridges 4 uniformly contact the hot plate 5 as shown in FIG. Since the portions 3 are evenly heated, as shown in FIG. 4, heat is transmitted through the ridges 4, the welded portions 3 are uniformly melted, and the ridges 4 disappear.
一方、被溶着部３に凹凸や歪みがある場合には、当初
においては、第２図に示すように熱板５に当接する凸条
４と当接しない凸条４′とが存在するが、第３図に示す
ように熱板５に当接している凸条４は溶融して背が低く
なる。このため、当初熱板５に当接していなかった凸条
４′も熱板５に当接するようになるので、第４図に示す
ように、すべての被溶着部３が均等に加熱されて溶融状
態になる。On the other hand, when the welded portion 3 has irregularities or distortion, initially, as shown in FIG. 2, there are the ridges 4 that contact the hot plate 5 and the ridges 4 ′ that do not abut. As shown in FIG. 3, the ridges 4 in contact with the hot plate 5 are melted and become shorter. As a result, the ridges 4 ′ that did not initially contact the hot plate 5 will also contact the hot plate 5, and as shown in FIG. State.
次に、被溶着部３が萬遍なく溶融した段階で、第５図
に示すように、樹脂成形体1A,1Bの被溶着部３同士を圧
接して互いに溶着する。このようにすると、被溶着部３
が均等に加熱されているため、得られる樹脂成形品に歪
みが生じないと共に、被溶着部３が萬遍なく溶融してい
るため、樹脂成形品に不完全溶着部が生じない。Next, when the welded portions 3 are uniformly melted, the welded portions 3 of the resin molded bodies 1A and 1B are pressed and welded to each other as shown in FIG. By doing so, the welded portion 3
Are uniformly heated, the resulting resin molded product is not distorted, and the welded portions 3 are uniformly melted, so that the resin molded product does not have incompletely welded portions.
（発明の効果） 以上説明したように、本発明に係る樹脂成形体同士の
溶着方法によると、フランジ部に連続して又は断続的に
延びる凸条を設けておいた後、各フランジ部の凸条を熱
板に当接せしめて凸条からの熱伝導によりフランジ部を
溶融状態にし、この状態でフランジ部同士を溶着する。
このため、フランジ部に凹凸や歪みがあっても、熱板に
当接している凸条が溶融して背が低くなって熱板に当接
していなかった凸条が熱板に当接するようになるので、
フランジ部は凸条からの熱伝導により均等に加熱されて
萬遍なく溶融状態になる。(Effects of the Invention) As described above, according to the method for welding resin molded bodies according to the present invention, after the convex portion extending continuously or intermittently is provided on the flange portion, the convex portion of each flange portion is provided. The strip is brought into contact with the hot plate to bring the flange into a molten state by heat conduction from the ridge, and the flanges are welded to each other in this state.
For this reason, even if the flange portion has irregularities or distortion, the ridges that are in contact with the hot plate are melted and become shorter, so that the ridges that did not contact the hot plate contact the hot plate. Because
The flanges are uniformly heated by the heat conduction from the ridges and are uniformly melted.
従って、本発明によると、樹脂成形体のフランジ部に
凹凸や歪みがあっても、フランジ部が均等に加熱されて
萬遍なく溶融状態になるので、得られる樹脂成形品に熱
歪みや不完全溶着部が発生しない。Therefore, according to the present invention, even if there is unevenness or distortion in the flange portion of the resin molded product, the flange portion is uniformly heated and uniformly melted. No welds occur.
第１図〜第５図は本発明の一実施例である樹脂成形体同
士の溶着方法を示し、第１図〜第４図はそれぞれ溶融工
程を示す断面図であり、第５図は溶着工程を示す断面図
であり、第６図及び第７図はそれぞれ従来の樹脂成形体
同士の溶着方法を示す断面図である。 1A,1B……樹脂成形体 ２……フランジ部 ３……被溶着部 ４……凸条 ５……熱板1 to 5 show a method of welding resin molded bodies according to an embodiment of the present invention. FIGS. 1 to 4 are cross-sectional views each showing a melting step. FIG. 5 is a welding step. 6 and 7 are cross-sectional views showing a conventional method for welding resin molded bodies to each other. 1A, 1B: Resin molding 2: Flange 3: Welded part 4: Protrusion 5: Hot plate
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 65/02 - 65/78 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) B29C 65/02-65/78
Claims (1)
同士の溶着方法であって、 前記樹脂成形体の各フランジ部のほぼ中央に、前記フラ
ンジ部に沿って連続して又は断続的に延びる凸条を設け
ておく工程と、 前記フランジ部の凸条をそれぞれ熱板に当接させて加熱
することにより、前記凸条を介して伝達される熱によっ
て、前記フランジ部を前記凸条が消滅する程度に溶融状
態にさせる工程と、 溶融状態になった前記フランジ部同士を、互いに対向さ
せた状態で圧接することにより溶着させる工程とを備え
ていることを特徴とする樹脂成形体同士の溶着方法。1. A method for welding resin molded bodies each having a flange portion, wherein the convex portion extends substantially or intermittently along the flange portion substantially at the center of each flange portion of the resin molded body. The step of providing the ridges, and the ridges of the flanges are heated by bringing the ridges of the flanges into contact with a hot plate, so that the ridges disappear from the flanges by the heat transmitted through the ridges. A method of welding the resin molded bodies to each other by a step of causing the flange portions in the molten state to be fused to each other by pressing the flange portions in a state of being opposed to each other. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29403590A JP2991764B2 (en) | 1990-10-30 | 1990-10-30 | Welding method of resin moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29403590A JP2991764B2 (en) | 1990-10-30 | 1990-10-30 | Welding method of resin moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04166324A JPH04166324A (en) | 1992-06-12 |
| JP2991764B2 true JP2991764B2 (en) | 1999-12-20 |
Family
ID=17802424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29403590A Expired - Fee Related JP2991764B2 (en) | 1990-10-30 | 1990-10-30 | Welding method of resin moldings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2991764B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6134375B2 (en) | 2014-04-03 | 2017-05-24 | 華邦電子股▲ふん▼有限公司Ｗｉｎｂｏｎｄ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏｒｐ． | Memory device having secure test mode and method thereof |
-
1990
- 1990-10-30 JP JP29403590A patent/JP2991764B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6134375B2 (en) | 2014-04-03 | 2017-05-24 | 華邦電子股▲ふん▼有限公司Ｗｉｎｂｏｎｄ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏｒｐ． | Memory device having secure test mode and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04166324A (en) | 1992-06-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |