JPH0363502B2 - - Google Patents

Info

Publication number
JPH0363502B2
JPH0363502B2 JP22770783A JP22770783A JPH0363502B2 JP H0363502 B2 JPH0363502 B2 JP H0363502B2 JP 22770783 A JP22770783 A JP 22770783A JP 22770783 A JP22770783 A JP 22770783A JP H0363502 B2 JPH0363502 B2 JP H0363502B2
Authority
JP
Japan
Prior art keywords
synthetic resin
resin molded
joining
melt
heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP22770783A
Other languages
Japanese (ja)
Other versions
JPS60125644A (en
Inventor
Ryuichiro Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Plastics Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Plastics Industries Ltd filed Critical Mitsubishi Plastics Industries Ltd
Priority to JP58227707A priority Critical patent/JPS60125644A/en
Publication of JPS60125644A publication Critical patent/JPS60125644A/en
Publication of JPH0363502B2 publication Critical patent/JPH0363502B2/ja
Granted legal-status Critical Current

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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2053—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2061—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • B29C66/73116—Melting point of different melting point, i.e. the melting point of one of the parts to be joined being different from the melting point of the other part
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To permit a uniform fusion of bonded surface and betterment of appearance by providing a flexible heat insulation sheet between a heater and an easily fusible synthetic resin molded product and by heating and fusing the bonding surface of the other molded product of hardly fusible resin. CONSTITUTION:The bottom surface of a heater 3 is brought into contact with the bonding surface 11 of a synthetic resin pipe 1 and a flexible heat insulation sheet 4 is provided between the upper surface of the heater 3 and the surface 21 of a synthetic resin strap 2, and pressed. After bonding surface 11 of the hardly fusible synthetic resin pipe 1 is heated and fused by feeding the heater 3 with electricity, the flexible heat insulation sheet 4 is removed and the bonding surface 21 of the synthetic resin strap is pressed and heated by the upper surface of the heater 3 until the bonding surface 21 becomes suitable for bonding by fusion. Simultaneously with the fusion of this bonding surface 21, the bonding surface 11 of the synthetic resin pipe 1 which is pressed by the bottom surface of the heater 3 is further fused.

Description

【発明の詳細な説明】 本発明は、熱融着により合成樹脂成形品を接合
する方法、詳しくは、接合する合成樹脂成形品の
間に加熱体を介在させて圧接し、それらの接合面
を溶融して接合する場合に、一方の合成樹脂成形
品が溶融し難く、他方のそれが溶融し易いもので
あつても、両方の接合面の溶融状態を均一にして
接合するようにした合成樹脂成形品の接合方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of joining synthetic resin molded products by heat fusion, and more specifically, a heating element is interposed between the synthetic resin molded products to be joined and pressure welding is performed, so that their joining surfaces are bonded together. When joining by melting, even if one synthetic resin molded product is difficult to melt and the other is easy to melt, the synthetic resin can be joined by making the melting state of both joint surfaces uniform. This invention relates to a method for joining molded products.

合成樹脂成形品を接合する方法としては、接合
する合成樹脂成形品の間に加熱体を介在させ、そ
れらを同時に加熱溶融したのち、両者の溶融接合
面を融着接合する方法がある。しかしながらこの
方法は、一方の合成樹脂成形品が溶融し難く、他
方のそれは溶融し易い場合に、接合後接合部分の
外観が不良となつたり、また、完全に接合するこ
とができないという欠点があつた。例えば、一方
の合成樹脂成形品の接合面が肉厚で、他方がそれ
よりも肉薄である場合、或は、接合する合成樹脂
成形品が異なつた合成樹脂材からなり、それらの
溶融率に差がある場合に、上記方法のように同時
に加熱溶融すると、肉薄或は溶融率の高い方の合
成樹脂成形品の接合面が極度に溶けてしまい、逆
に、肉厚或は溶融率の低い方の合成樹脂成形品の
接合面は充分に溶融せず、従つて、両者を融着接
合した際に強固な接合が得られず、また、接合部
分の外観が不良となるという欠点があつた。 As a method for joining synthetic resin molded products, there is a method of interposing a heating body between the synthetic resin molded products to be joined, heating and melting them at the same time, and then fusion-bonding the molten joint surfaces of both. However, this method has the disadvantage that if one synthetic resin molded product is difficult to melt and the other is easy to melt, the appearance of the joined part may be poor after joining, or it may not be possible to join completely. Ta. For example, if the joint surface of one synthetic resin molded product is thick and the other is thinner, or if the synthetic resin molded products to be joined are made of different synthetic resin materials and their melting rates are different. In such cases, if the joint surfaces of the synthetic resin molded product with the thinner wall or higher melting rate are heated and melted at the same time as in the above method, the joint surface of the synthetic resin molded product with the thinner wall or the higher melting rate will melt, and conversely, the joint surface of the synthetic resin molded product with the thinner wall or the lower melting rate will melt. The bonding surfaces of the synthetic resin molded products were not sufficiently melted, and therefore, when the two were fused and bonded, a strong bond could not be obtained, and the appearance of the bonded portion was poor.

本発明は、溶融し易い一方の合成樹脂成形品と
加熱体との間に可撓性断熱シートを介在させて、
まず、溶融し難い他方の合成樹脂成形品の接合面
を加熱溶融し、次いで、上記可撓性断熱シートを
除去して溶融し易い合成樹脂成形品の接合面を加
熱溶融すると同時に、溶融し難い合成樹脂成形品
の接合面を更に加熱溶融して、両方の合成樹脂成
形品の接合面の溶融状態を均一にすることによつ
て、接合部分の外観が良好となり、しかも、完全
に接合することができるようにした熱融着により
合成樹脂成形品を接合する方法を提供するもので
ある。 In the present invention, a flexible heat insulating sheet is interposed between one of the easily meltable synthetic resin molded products and the heating body,
First, the joint surface of the other synthetic resin molded product, which is difficult to melt, is heated and melted, and then the flexible heat insulating sheet is removed, and the joint surface of the synthetic resin molded product, which is easy to melt, is heated and melted. By further heating and melting the joint surfaces of the synthetic resin molded products to make the melting state of the joint surfaces of both synthetic resin molded products uniform, the appearance of the joint part becomes good and the joint is completely joined. The present invention provides a method for joining synthetic resin molded products by heat fusion.

次に、本発明の実施例を添付の図面において詳
述する。 Embodiments of the invention will now be described in detail in the accompanying drawings.

図面は本発明の方法の一実施例を示し、第１図
は合成樹脂製管、加熱体、可撓性断熱シート及び
合成樹脂製サドルの説明図、第２図は合成樹脂製
管と合成樹脂製サドルとの間に加熱体と可撓性断
熱シートとを介在させ圧接状態の説明図、第３図
は合成樹脂製管と合成樹脂製サドルとの間に加熱
体を介在させ圧接状態の説明図、第４図は合成樹
脂製管と合成樹脂製サドルとの圧着状態の説明図
である。 The drawings show an embodiment of the method of the present invention, and FIG. 1 is an explanatory diagram of a synthetic resin tube, a heating element, a flexible heat insulating sheet, and a synthetic resin saddle, and FIG. 2 is an explanatory diagram of a synthetic resin tube and a synthetic resin saddle. Fig. 3 is an explanatory diagram of a state in which a heating body and a flexible heat insulating sheet are interposed between a synthetic resin saddle and a press-contact state, and Fig. 3 is an illustration of a state in which a heating body is interposed between a synthetic resin tube and a synthetic resin saddle and a pressure-contact state. FIG. 4 is an explanatory diagram of a state in which a synthetic resin tube and a synthetic resin saddle are crimped together.

本発明は、接合する合成樹脂成形品の間に加熱
体を介在させて圧接し、それらの接合面を溶融し
て接合する方法であつて、接合する合成樹脂成形
品の形状等は問わないが、以下断面正円状の合成
樹脂製管１に合成樹脂製サドル２を接合する場合
について説明する。合成樹脂製管１は、その接合
面１１が合成樹脂製サドル２の接合面２１よりも
肉厚で溶融し難い。また、合成樹脂製サドル２
は、分岐管を接続するためのもので、上記合成樹
脂製管１と同種の合成樹脂材からなるが、その接
合面２１は合成樹脂製管１の接合面１１よりも肉
薄で溶融し易いものである。このような合成樹脂
製管１に合成樹脂製サドル２を接合するにあたつ
て、第２図に示す如く、合成樹脂製管１の接合面
１１に加熱体３下面を当接し、この加熱体３上面
と合成樹脂製サドル２の接合面２１との間に可撓
性断熱シート４を介在させて圧接する。加熱体３
は、通電するとそれに圧接している合成樹脂を溶
融することができる機能を有している。また、可
撓性断熱シート４は耐熱性、離型性の良好なもの
で、例えば、テフロンシートやシリコンシートが
好適である。この可撓性断熱シート４を介在させ
てあると、加熱体３の熱が遮断されるので合成樹
脂製サドル２の接合面２１が溶融しない。そし
て、上記加熱体３に通電し、まず、溶融し難い合
成樹脂製管１の接合面１１を加熱溶融する。この
加熱溶融は、合成樹脂製管１の接合面１１が接合
に好適な溶融状態になるまでの所要時間から合成
樹脂製サドル２の接合面２１を好適に溶融し得る
所要時間を差引いた時間だけ行う。次いで、上記
可撓性断熱シート４を除去し、第３図に示す如
く、合成樹脂製サドル２の接合面２１を加熱体３
上面に圧接して、該接合面２１が融着接合に好適
な溶融状態となるまで加熱する。この接合面２１
を溶融すると同時に、加熱体３下面と圧接した合
成樹脂製管１の接合面１１を更に溶融する。そう
すると、合成樹脂製サドル２の接合面２１も接合
に好適な溶融状態となる。しかる後、上記加熱体
３を除去し、第４図に示す如く、合成樹脂製管１
の溶融接合面１１と合成樹脂製サドル２の溶融接
合面２１とを圧着して、それらを接合するもので
ある。 The present invention is a method of joining synthetic resin molded products to be joined by interposing a heating body to press them together and melting their joining surfaces, and the shape of the synthetic resin molded products to be joined does not matter. Hereinafter, a case will be described in which a synthetic resin saddle 2 is joined to a synthetic resin tube 1 having a perfect circular cross section. The joint surface 11 of the synthetic resin tube 1 is thicker than the joint surface 21 of the synthetic resin saddle 2 and is difficult to melt. In addition, synthetic resin saddle 2
is for connecting branch pipes, and is made of the same type of synthetic resin material as the synthetic resin pipe 1, but its joint surface 21 is thinner and more easily melted than the joint surface 11 of the synthetic resin pipe 1. It is. When joining the synthetic resin saddle 2 to such a synthetic resin tube 1, as shown in FIG. A flexible heat insulating sheet 4 is interposed between the upper surface of the synthetic resin saddle 2 and the joint surface 21 of the synthetic resin saddle 2, and they are pressed together. Heating body 3
has the function of melting the synthetic resin that is in pressure contact with it when energized. Further, the flexible heat insulating sheet 4 has good heat resistance and mold releasability, and is preferably a Teflon sheet or a silicone sheet, for example. When this flexible heat insulating sheet 4 is interposed, the heat of the heating body 3 is cut off, so that the joint surface 21 of the synthetic resin saddle 2 does not melt. Then, the heating body 3 is energized to heat and melt the joint surface 11 of the synthetic resin tube 1, which is difficult to melt. This heating and melting is carried out for the time required to melt the joint surface 21 of the synthetic resin saddle 2 in a suitable manner from the time required for the joint surface 11 of the synthetic resin tube 1 to reach a molten state suitable for joining. conduct. Next, the flexible heat insulating sheet 4 is removed, and the joint surface 21 of the synthetic resin saddle 2 is attached to the heating body 3 as shown in FIG.
It is pressed against the upper surface and heated until the joining surface 21 is in a molten state suitable for fusion joining. This joint surface 21
At the same time, the joint surface 11 of the synthetic resin tube 1 that is in pressure contact with the lower surface of the heating body 3 is further melted. Then, the joining surface 21 of the synthetic resin saddle 2 will also be in a molten state suitable for joining. After that, the heating element 3 is removed, and the synthetic resin tube 1 is replaced as shown in FIG.
The fusion bonding surface 11 of the synthetic resin saddle 2 and the fusion bonding surface 21 of the synthetic resin saddle 2 are pressed together to join them.

なお、前記実施例では、接合面１１が肉厚の合
成樹脂製管１に、該合成樹脂製管１と同種の合成
樹脂からなり、接合面２１が肉厚の合成樹脂製サ
ドル２を接合する場合について述べたが、これに
限定されるものではない。本発明の方法は、溶融
率が異なる合成樹脂材で成形した合成樹脂成形品
を接合する場合は勿論、溶融率が異なり、かつ、
接合面の肉厚差がある合成樹脂成形品を接合する
場合等にも適用できるものである。 In the above embodiment, the synthetic resin saddle 2, which is made of the same type of synthetic resin as the synthetic resin tube 1 and has a thick joint surface 21, is joined to the synthetic resin tube 1 whose joint surface 11 is thick. Although the case is described above, the present invention is not limited to this. The method of the present invention can be used not only when joining synthetic resin molded products made of synthetic resin materials with different melting rates, but also when joining synthetic resin molded products made of synthetic resin materials with different melting rates, and
This method can also be applied when joining synthetic resin molded products that have different wall thicknesses on the joining surfaces.

以上のように本発明の方法は、溶融し易い一方
の合成樹脂成形品と加熱体との間にシリコン等か
らなる可撓性断熱シートを介在させ、まず、溶融
し難い他方の合成樹脂成形品の接合面を加熱溶融
し、次いで、可撓性断熱シートを除去して溶融し
易い合成樹脂成形品の接合面を加熱溶融する。ま
た、それと同時に溶融し難い合成樹脂成形品の接
合面を更に加熱溶融するものであるから、溶融し
易い合成樹脂成形品と溶融し難い合成樹脂成形品
とを接合する場合、それら両方の接合面の溶融状
態が均一で、接合するに好適な状態に溶融するこ
とができる。従つて、一方の合成樹脂成形品の接
合面が極度に溶融されることから生ずる接合部分
の外観不良はなく、接合後の外観は良好となる。
また、溶融し難い合成樹脂成形品の接合面が溶融
不充分となることもなく、接合するに好適な状態
に溶融されるので、完全に接合することができる
ものである。 As described above, in the method of the present invention, a flexible heat insulating sheet made of silicone or the like is interposed between one synthetic resin molded product that is easy to melt and a heating body, and first, the other synthetic resin molded product that is difficult to melt is Then, the flexible heat insulating sheet is removed and the bonding surface of the easily meltable synthetic resin molded product is heated and melted. In addition, at the same time, the joining surface of the synthetic resin molded product that is difficult to melt is further heated and melted, so when joining a synthetic resin molded product that is easy to melt and a synthetic resin molded product that is difficult to melt, the joining surface of both of them is heated and melted. The molten state is uniform and can be melted to a state suitable for joining. Therefore, there is no appearance defect of the jointed portion due to excessive melting of the joining surface of one of the synthetic resin molded products, and the appearance after joining is good.
Furthermore, the bonding surfaces of the synthetic resin molded articles, which are difficult to melt, do not become insufficiently melted, and are melted to a state suitable for bonding, so that complete bonding can be achieved.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の一実施例を示し、第１図は合成
樹脂製管、加熱体、可撓性断熱シート及び合成樹
脂製サドルの説明図、第２図は合成樹脂製管と合
成樹脂製サドルとの間に加熱体と可撓性断熱シー
トとを介在させ圧接状態の説明図、第３図は合成
樹脂製管と合成樹脂製サドルとの間に加熱体を介
在させ圧接状態の説明図、第４図は合成樹脂製管
と合成樹脂製サドルとの圧着状態の説明図であ
る。 １は合成樹脂製管、２は合成樹脂製サドル、３
は加熱体、４は可撓性断熱シート、１１は合成樹
脂製管の接合面、２１は合成樹脂製サドルの接合
面を示す。 The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram of a synthetic resin tube, a heating element, a flexible heat insulating sheet, and a synthetic resin saddle, and FIG. 2 is an explanatory diagram of a synthetic resin tube and a synthetic resin saddle. FIG. 3 is an explanatory diagram of a state in which a heating body and a flexible heat insulating sheet are interposed between the synthetic resin tube and the synthetic resin saddle, and FIG. FIG. 4 is an explanatory diagram of a state in which a synthetic resin tube and a synthetic resin saddle are crimped together. 1 is a synthetic resin tube, 2 is a synthetic resin saddle, 3
4 is a heating body, 4 is a flexible heat insulating sheet, 11 is a joint surface of a synthetic resin tube, and 21 is a joint surface of a synthetic resin saddle.

Claims (1)

【特許請求の範囲】[Claims] １ 接合する合成樹脂成形品の間に加熱体を介在
させて圧接し、それらの接合面を溶融して接合す
る方法であつて、溶融し易い一方の合成樹脂成形
品と加熱体との間にシリコン等からなる可撓性断
熱シートを介在させ、まず、溶融し難い他方の合
成樹脂成形品の接合面を加熱溶融し、次いで、上
記可撓性断熱シートを除去して溶融し易い合成樹
脂成形品の接合面を加熱溶融すると同時に、上記
溶融し難い合成樹脂成形品の接合面を更に加熱溶
融し、しかる後、上記加熱体を除去してそれらの
溶融接合面を圧着することを特徴とする熱融着に
より合成樹脂成形品を接合する方法。1 A method in which a heating body is interposed between synthetic resin molded products to be joined, and the joining surfaces are melted and joined, and there is no space between one of the synthetic resin molded products that is easily melted and the heating body. A flexible heat insulating sheet made of silicone or the like is interposed, and the joint surface of the other synthetic resin molded product, which is difficult to melt, is first heated and melted, and then the flexible heat insulating sheet is removed to form a synthetic resin molded product that is easy to melt. At the same time as heating and melting the joining surfaces of the article, the joining surfaces of the synthetic resin molded article that is difficult to melt are further heated and melted, and then the heating body is removed and the fused joining surfaces are crimped. A method of joining synthetic resin molded products by heat fusion.
JP58227707A 1983-12-01 1983-12-01 Method of joining synthetic resin molded products by heat fusion Granted JPS60125644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58227707A JPS60125644A (en) 1983-12-01 1983-12-01 Method of joining synthetic resin molded products by heat fusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58227707A JPS60125644A (en) 1983-12-01 1983-12-01 Method of joining synthetic resin molded products by heat fusion

Publications (2)

Publication Number Publication Date
JPS60125644A JPS60125644A (en) 1985-07-04
JPH0363502B2 true JPH0363502B2 (en) 1991-10-01

Family

ID=16865086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58227707A Granted JPS60125644A (en) 1983-12-01 1983-12-01 Method of joining synthetic resin molded products by heat fusion

Country Status (1)

Country Link
JP (1) JPS60125644A (en)

Also Published As

Publication number Publication date
JPS60125644A (en) 1985-07-04

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