JP2006088415A - Welding chip - Google Patents

Welding chip Download PDF

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JP2006088415A
JP2006088415A JP2004274470A JP2004274470A JP2006088415A JP 2006088415 A JP2006088415 A JP 2006088415A JP 2004274470 A JP2004274470 A JP 2004274470A JP 2004274470 A JP2004274470 A JP 2004274470A JP 2006088415 A JP2006088415 A JP 2006088415A
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Prior art keywords
welding
tip
resin
welding tip
contact surface
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Japanese (ja)
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Tsutomu Morita
勉 森田
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Munekata Co Ltd
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Munekata Co Ltd
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Priority to JP2004274470A priority Critical patent/JP2006088415A/en
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    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow 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
    • 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
    • B29C66/814—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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a welding chip capable of corresponding to the change in the amount of a molten resin accompanied by the thickness irregularity of an article to be fixed when a thermoplastic resin molded product and the article to be fixed are fixed using the welding chip. <P>SOLUTION: When the leading end of a welding boss 71 is melted, the recessed part 18 of the welding chip 11 is filled with the molten resin. At this time, the excessive resin incapable of being housed by the volume of the recessed part 18 is allowed to escape in a resin escape opening part 19. Since this method can correspond to a change in the amount of the molten resin, a caulking part 76 of sufficient strength can be formed and the occurrence of burr can be prevented. Further, by determining the number of the escape opening parts 19 so that the resin escaping from the escape opening parts 19 becomes an arbitrary shape or a number, the shape or number of excess pieces 74 is specified to enhance the design properties or message properties of the caulking part 76 can be enhanced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、熱可塑性樹脂成形品へ被固定物を溶着（固定）する際に、熱可塑性樹脂成形品の一部に溶着ボスと称される変形部を形成し、この変形部を熱で溶融することにより、成形品に被固定物をかしめ止めする熱可塑性樹脂成形品の熱溶着に用いられる溶着チップに関するものである。   In the present invention, when a fixed object is welded (fixed) to a thermoplastic resin molded product, a deformed portion called a welding boss is formed on a part of the thermoplastic resin molded product, and the deformed portion is melted by heat. By doing so, the present invention relates to a welding tip used for thermal welding of a thermoplastic resin molded product for caulking and fixing an object to be fixed to the molded product.

従来、熱可塑性樹脂製成形品（以下「成形品」と称す）へ被固定物を溶着（固定）する時、成形品側に形成された溶着ボスを被固定物側に形成された固定孔に通し、この固定孔から突き出た溶着ボスの先端側を加熱体の当接面に形成された凹部により加熱溶融して固定孔の直径より大きい直径を持つかしめ部を形成して溶着固定（かしめ）する溶着方法が一般的に用いられている。
そして、前記加熱体には、ヒーター（熱源）により加熱された熱棒や、電圧を印加し、ジュール熱で発熱させる抵抗発熱体からなる溶着チップなど様々なタイプがある。
本発明は、後者の溶着チップに関するもので、この溶着チップとしては、次のような構成のものが開示されている。 Conventionally, when a fixed object is welded (fixed) to a thermoplastic resin molded product (hereinafter referred to as a “molded product”), a welding boss formed on the molded product side is inserted into a fixed hole formed on the fixed object side. Through, the front end side of the welding boss protruding from the fixing hole is heated and melted by the concave portion formed on the contact surface of the heating body to form a caulking portion having a diameter larger than the diameter of the fixing hole, thereby fixing the welding (caulking). Generally, a welding method is used.
There are various types of heating elements, such as a heating rod heated by a heater (heat source) and a welding tip composed of a resistance heating element that applies voltage and generates heat by Joule heat.
The present invention relates to the latter welding tip, and as this welding tip, one having the following configuration is disclosed.

特公平０４−０１９０１６号公報 この特許文献１に示された溶着チップは、図９に示すように、先端の当接面を凹曲面とした抵抗発熱体（溶着チップ）、電線（電極），冷却用エアーパイプ，及び前記冷却用パイプを固定する支持部材からなり、抵抗発熱体と電線は溶接等で電気的に接続した後、その周囲を樹脂製のカバーにて包含することにより抵抗発熱体、電線，冷却用エアーパイプを一体とした構成である。 溶着方法としては、溶着チップの当接面を溶着ボスに押し当て、加熱、溶融する。その後冷却用エアーパイプから冷却エアーを吹きかけて当接面を冷却することにより溶着ボスの溶融部を固化した後、溶着チップを引き離し、溶着を完了すると云うものである。As shown in FIG. 9, the welding tip shown in Japanese Patent Publication No. 04-019016 has a resistance heating element (welding tip), an electric wire (electrode), a cooling element having a concave contact surface at the tip. A heat generating pipe and a supporting member for fixing the cooling pipe. After the resistance heating element and the electric wire are electrically connected by welding or the like, the resistance heating element is covered by a resin cover. The electric wire and cooling air pipe are integrated. As a welding method, the contact surface of the welding tip is pressed against the welding boss, and heated and melted. Thereafter, cooling air is blown from the cooling air pipe to cool the contact surface, so that the molten portion of the welding boss is solidified, and then the welding tip is pulled away to complete the welding.

前記説明したように、従来の溶着チップについては、次のような問題点がある。
１．特許文献１にあっては、溶着ボスを溶融して押し潰した時に、溶着チップの先端と被固定物との隙間から、溶融した樹脂が外にはみ出し、これが溶着チップの側面に付着して溶着チップの離脱を容易に行うことが出来なかったり、無理して離脱させることにより溶着部が白化したり、クラックが発生したりする場合がある。
２．特許文献１にあっては、被固定物がプリント基板の様に積層板の場合、生産ロットによりその厚さ変動が大きく、被固定物が厚い方向へバラついた場合、溶着ボスの溶け代が短いため、溶融樹脂量が少ないのでチップ内が樹脂の充填不足により溶着不良を起こす。
また、逆に被固定物が薄い方向へバラついた場合、溶着ボスの溶け代が長いため溶融樹脂量が多くなり、溶着チップの先端と被固定物の間から、溶融した樹脂がはみ出し、はみ出した樹脂が薄いバリ状態の場合、製品内に落下し異物となってしまうことがある。
例えば、プリント基板を樹脂成形品のシャーシに取り付ける場合、溶着ボスの直径が２mm、高さが２ｍｍである時、プリント基板の厚さのばらつきにより、プリント基板より突き出る溶け代寸法が変化し、その結果、溶融する樹脂量は次の様になる。
プリント基板の厚さセンター値である１．６mmの場合、６．２８ｍｍ３、厚さが１．５ｍｍ（下限値）の場合、６，６ｍｍ３、厚さが１．７ｍｍ（上限値）の場合５．９７ｍｍ３。
したがって、０．６３mm３の範囲で溶融樹脂樹脂量が変動することになる。
３．特許文献１にあっては、溶着時の樹脂のはみ出しにより、清掃の回数が多くなり、生産効率を悪くさせていた。
本発明は、溶着チップにおいて、上記した１〜３の課題の様に、被固定物の生産ロットによる板厚の変化に伴う溶融樹脂量が変化しても的確な溶着が行える溶着チップを得ることが目的である。 As described above, the conventional welding tip has the following problems.
1. In Patent Document 1, when the welding boss is melted and crushed, the molten resin protrudes from the gap between the tip of the welding tip and the object to be fixed, and this adheres to the side surface of the welding tip and is welded. In some cases, the chip cannot be easily detached, or the welded part may be whitened or cracked by forcibly removing the chip.
2. In Patent Document 1, when the object to be fixed is a laminated board such as a printed circuit board, the thickness variation is large depending on the production lot. Since it is short, the amount of molten resin is small, so that the chip has poor welding due to insufficient filling of the resin.
On the other hand, if the object to be fixed varies in the thin direction, the molten resin amount increases because the welding margin of the welding boss is long, and the molten resin protrudes from between the tip of the welding tip and the object to be fixed. If the resin is in a thin burr state, it may fall into the product and become a foreign object.
For example, when a printed circuit board is attached to a chassis of a resin molded product, when the diameter of the welding boss is 2 mm and the height is 2 mm, the welding allowance dimension protruding from the printed circuit board changes due to the thickness variation of the printed circuit board. As a result, the amount of resin to be melted is as follows.
When the thickness center value of the printed circuit board is 1.6 mm, 6.28 mm 3 , when the thickness is 1.5 mm (lower limit), when the thickness is 6, 6 mm 3 , and when the thickness is 1.7 mm (upper limit) 5.97 mm 3 .
Therefore, the amount of the molten resin resin varies within the range of 0.63 mm 3 .
3. In patent document 1, the frequency | count of cleaning increased by the protrusion of the resin at the time of welding, and was making production efficiency worse.
The present invention provides a welding tip that can perform accurate welding even when the amount of molten resin changes due to a change in the plate thickness depending on the production lot of the object to be fixed, as in the problems 1 to 3 described above. Is the purpose.

上記目的を達成するため、請求項１に記載の発明においては、溶着チップにおいて、熱可塑性樹脂成形品側に形成された溶着ボスを熱可塑性樹脂製被固定物側に形成された固定孔に通し、この固定孔から突き出た前記溶着ボスの先端側に溶着チップの先端面に形成した凹状の当接面を押し当てて溶着ボスが固定孔から突き出た部分を加熱溶融して固定孔の直径より大きい直径を持つかしめ部を形成することにより、成形品に被固定物を固定する際に用いられる溶着チップにおいて、前記溶着チップの先端面に形成された当接面の周縁に溶融した余剰の樹脂を逃がすための逃げ開口部を設けたことを特徴とするものである。
このように、溶着チップの当接面に樹脂の逃げ開口部を設けたことにより、チップ内におさまりきれずはみ出した溶融樹脂は開口部の空間内にたまり、その結果、溶着チップ側面にはみ出した樹脂がチップの周囲にまわらなくなるので、溶着終了後の溶着チップの離脱が容易になる。また、樹脂のはみ出しがなくなり、従来発生していたはみ出した樹脂の落下による製品内の不良をなくすことができる。また、溶着チップの側面へ樹脂の付着が発生しなくなったので溶着チップの掃除回数を削減することができる。 In order to achieve the above object, in the invention described in claim 1, in the welding tip, the welding boss formed on the thermoplastic resin molded product side is passed through the fixing hole formed on the thermoplastic resin fixed object side. Then, the concave contact surface formed on the tip surface of the welding tip is pressed against the tip side of the welding boss protruding from the fixing hole, and the portion where the welding boss protrudes from the fixing hole is heated and melted to obtain the diameter of the fixing hole. In the welding tip used when fixing the object to be fixed to the molded product by forming a caulking portion having a large diameter, excess resin melted at the periphery of the contact surface formed on the tip surface of the welding tip It is characterized in that a relief opening is provided for escaping.
In this way, by providing the resin escape opening on the contact surface of the welding tip, the molten resin that could not fit in the tip was accumulated in the space of the opening, and as a result, it protruded to the side of the welding tip. Since the resin does not wrap around the chip, the welding chip can be easily detached after the welding is completed. Further, the resin does not protrude, and defects in the product due to the falling of the protruding resin that has occurred in the past can be eliminated. In addition, since the resin does not adhere to the side surfaces of the welding tips, the number of cleanings of the welding tips can be reduced.

更に、請求項２に記載の発明においては、請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、溶融樹脂のはみ出し方向を制御できるように１ヶ所又は複数ヶ所形成されていることを特徴とするものである。
従来の溶着チップは、凹状の当接面において、溶融樹脂が収容しきれなくなった場合、当接面と被固定物の間から外部へあふれ出すが、その方向を定める機能を有していないため不都合な方向へあふれ出す場合がある。
本発明の当接面へ開口部を設けた溶着チップを用いることにより、溶融樹脂が凹状の当接面の容量値以上になっても逃げ開口部を設けているので、はみ出し方向を一定方向へ規制制御することができる。 Furthermore, in the invention described in claim 2, the relief opening formed in the periphery of the contact surface of the welding tip according to claim 1 is formed at one or a plurality of locations so that the protruding direction of the molten resin can be controlled. It is characterized by being.
The conventional welding tip overflows from between the contact surface and the object to be fixed when the molten resin can no longer be accommodated on the concave contact surface, but does not have a function to determine its direction. It may overflow in an inconvenient direction.
By using the welding tip provided with an opening on the contact surface according to the present invention, the escape opening is provided even when the molten resin exceeds the capacity value of the concave contact surface. Regulation control can be performed.

更に、請求項３に記載の発明においては、請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、かしめ部の周囲に任意形状のはみ出し部を形成して、意匠性を持たせることができるように、任意形状に形成されていることを特徴とするものである。
例えば、逃げ開口部の形状を３角形にすると「太陽」のシンボルになり、半円形にすると「花」のシンボルを表すことができる。したがって、外観部に本溶着方法を用いることにより意匠性に富んだ製品を得ることが出来る。 Furthermore, in the invention described in claim 3, the relief opening formed in the periphery of the contact surface of the welding tip according to claim 1 forms an protruding portion having an arbitrary shape around the caulking portion. It is characterized by being formed in an arbitrary shape so that it can have the property.
For example, if the shape of the escape opening is a triangle, it becomes a symbol of “sun”, and if it is semicircular, a symbol of “flower” can be expressed. Therefore, a product rich in design can be obtained by using the present welding method for the appearance portion.

更に、請求項４に記載の発明においては、請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、かしめ部の周囲に任意数のはみ出部を形成して、メッセージ性をもたせることができるように特定された数形成されていることを特徴とするものである。
例えば、本溶着チップを用いて組み立てたユニットを解体する場合、解体する順序を定めておく必要がある。その時、溶着チップへ解体順序に従って開口部の数を多くし、解体時には開口部より形成された余剰片の数に従って解体を行うようにすると、解体を安全に行うことができ、各部材の損傷も軽減出来る効果を得られる。 Furthermore, in the invention according to claim 4, the relief opening formed at the periphery of the contact surface of the welding tip according to claim 1 forms an arbitrary number of protruding portions around the caulking portion, so that the message It is characterized in that it is formed in a specific number so that it can have sex.
For example, when disassembling a unit assembled using the welding tip, it is necessary to determine the order of disassembly. At that time, if the number of openings is increased according to the disassembly order to the welding tip, and disassembly is performed according to the number of surplus pieces formed from the openings at the time of disassembly, disassembly can be performed safely, and damage to each member is also caused. An effect that can be reduced is obtained.

請求項１〜請求項４に記載の発明によると、溶着チップにおいて、次のような効果が得られる。
ａ．チップ当接面に１ヵ所以上の開口部を設け意識的にはみ出し部を設けたことにより、余剰の溶融樹脂が開口部に収納され、その結果、はみ出した溶融樹脂が溶着チップ側面にまわることがなく、溶着終了後溶着チップの離脱が容易である。
ｂ．開口部にはみ出した溶融樹脂がたまることによって、薄肉のバリが発生せず、よってこのバリが製品内に落下して異物になることを防ぐことができる。
ｃ．はみ出した溶融樹脂が溶着チップ側面にまわることがなく、溶着チップの掃除の回数が減り、効率的に作業を進めることが可能となった。 According to the first to fourth aspects of the invention, the following effects can be obtained in the welding tip.
a. By providing one or more openings on the chip abutment surface and intentionally providing an overhang, excess molten resin can be stored in the opening, and as a result, the molten resin that protrudes can spread around the side of the weld tip. In addition, the welding tip can be easily detached after the welding is completed.
b. Since the molten resin that protrudes from the opening accumulates, a thin-walled burr does not occur. Therefore, the burr can be prevented from falling into the product and becoming a foreign substance.
c. The molten resin that protrudes does not travel to the side surface of the welding tip, and the number of cleanings of the welding tip is reduced, thus enabling the work to proceed efficiently.

本発明の溶着チップ及びそれを用いた熱溶着装置は、チップ先端の当接面に１ヵ所以上の樹脂の逃げ開口部を設けたことを特徴とし、公知の手段（工程）で溶着を行い、成形品に被固定物を固定するものである。
また、開口部の形状に特徴付けることにより、形成されたかしめ部は意匠的向上、又は、メッセージ性を持たせる事ができる。
次に、本発明の実施例を各図に基づいて詳細に説明する。 The welding tip of the present invention and the heat welding apparatus using the same are characterized in that one or more resin escape openings are provided on the contact surface of the tip of the tip, and welding is performed by a known means (step). An object to be fixed is fixed to a molded product.
Further, by characterizing the shape of the opening, the formed caulked portion can have a design improvement or a message property.
Next, embodiments of the present invention will be described in detail with reference to the drawings.

請求項１及び請求項２に対応する実施例について説明する。
図１（ａ）は本発明熱溶着装置の斜視図であり、図１（ｂ）は図１（ａ）のＡ部拡大図、図２は熱溶着装置の断面図である。熱溶着装置１ａの構成は、溶着チップ１１を発熱させるため溶接等で接続された一対の電線１２、ボス溶融後に溶着チップ１１を冷却するためのエアーを通すエアーパイプ１３、他に、支持部材１４、カバー１５からなる。
溶着チップ１１について説明すると、ステンレスからなる凹状の当接面１６を持つ筒状の中空体であり、更にその側面には前記当接面１６から後端の開口部へ向けて冷却用エアーを外部へ排出するためのスリット１７が形成されている。そして、そのスリット１７により、溶着チップ１１の後部は二股状に分かれていて、各々受電端子部となっている。 Embodiments corresponding to claims 1 and 2 will be described.
FIG. 1A is a perspective view of the heat welding apparatus of the present invention, FIG. 1B is an enlarged view of a portion A of FIG. 1A, and FIG. 2 is a cross-sectional view of the heat welding apparatus. The structure of the heat welding apparatus 1a includes a pair of electric wires 12 connected by welding or the like for generating heat from the welding tip 11, an air pipe 13 for passing air for cooling the welding tip 11 after melting the boss, and a support member 14. , And a cover 15.
The welding tip 11 will be described. It is a cylindrical hollow body having a concave contact surface 16 made of stainless steel. Further, cooling air is externally supplied from the contact surface 16 toward the rear opening. A slit 17 is formed for discharging to the outside. And by the slit 17, the rear part of the welding chip | tip 11 is divided into the forked shape, and each becomes a receiving terminal part.

更に溶着チップ１１の当接面１６について説明すると、当接面１６には溶融した樹脂をかしめ部として形成する周縁１８ａを有する凹部１８を形成し、この凹部１８の周縁１８ａにおいては余剰樹脂が逃げるための逃げ開口部１９が周縁１８ａにおいて１８０°の位置に２ヵ所設けてある。寸法について説明すると、チップ（当接面）先端と逃げ開口部１９の段差Ｈは０．３５ｍｍであり、逃げ開口部１９の幅Ｗは１．４ｍｍである。したがって本実施例の溶着チップ１１は、ボス溶融時に溶着チップ１１の凹部１８からはみ出た余剰樹脂を逃げ開口部１９に溜めることができる。
次に図３（ａ）〜（ｄ）を用いて、前記説明した溶着チップ１１を用いた熱溶着装置１ａによる溶着工程を説明する。なお、熱溶着装置１ａは動作が理解できるようにカバーを除いて表示している。
溶着工程は、熱可塑性樹脂成形品のシャーシへ電気部品を実装した基板３１をかしめ固定するのが目的である。 Further, the contact surface 16 of the welding tip 11 will be described. The contact surface 16 is formed with a recess 18 having a peripheral edge 18a formed as a caulking portion of molten resin, and excess resin escapes at the peripheral edge 18a of the recess 18. Two relief openings 19 are provided at 180 ° on the peripheral edge 18a. Describing the dimensions, the step H between the tip (contact surface) tip and the relief opening 19 is 0.35 mm, and the width W of the relief opening 19 is 1.4 mm. Therefore, the welding tip 11 of the present embodiment can store the excess resin protruding from the recess 18 of the welding tip 11 when the boss is melted in the escape opening 19.
Next, the welding process by the heat welding apparatus 1a using the above-described welding tip 11 will be described with reference to FIGS. The heat welding apparatus 1a is displayed without the cover so that the operation can be understood.
The purpose of the welding process is to caulk and fix the substrate 31 on which electrical components are mounted on the chassis of a thermoplastic resin molded product.

まず、図３（ａ）に示すように、基板３１に開口した固定孔５１へ成形品７２に一体成形された溶着ボス７１を貫通させる。次に、熱溶着装置１ａを図３（ｂ）の様に降下させ、溶着チップ１１の当接面１６を溶着ボス７１へ被せるように押し付ける。電線１２へ電圧を供給すると溶着チップ１１は発熱する。その熱で溶着ボス７１先端から溶融し、溶融した樹脂が溶着チップ１１の凹部１８に充満する。この時、基板３１の厚さのばらつきにより基板３１の厚さが薄い場合、溶融ボス７１の溶融する体積が増すため凹部１８の容量で収納しきれなくなる。その結果、はみ出した余剰分の樹脂が逃げ開口部１９にたまる。設定された溶融工程時間が経過した後、電圧の印加を止めると同時に加熱された溶着チップ１１にエアーパイプ１３から図３（ｃ）に示すように冷却エアー９１が供給され、さらに噴出された冷却エアー９１は溶着チップ１１内部を冷却した後、スリット１７から外部へ放出される。溶着チップ１１の当接面１６が冷却され溶融部の樹脂が固化すると、冷却エアー９１の供給を止め熱溶着装置１ａを上昇させる。その結果、図３（ｄ）に示すように凹部１８により形成された固定孔５１より大きい直径をもつかしめ体７３と、開口部により形成された余剰片７４とが一体形成されたかしめ部７６により基板３１が成形品７２へ固定される。また、余剰片７４もある一定の厚みをもって固定される。溶融樹脂に余剰分が発生しない時は余剰片が発生せず、かしめ体がかしめ部となる。   First, as shown in FIG. 3A, the welding boss 71 integrally formed with the molded product 72 is passed through the fixing hole 51 opened in the substrate 31. Next, the thermal welding apparatus 1a is lowered as shown in FIG. 3B and pressed so as to cover the welding boss 71 with the contact surface 16 of the welding tip 11. When a voltage is supplied to the electric wire 12, the welding tip 11 generates heat. The heat melts from the tip of the welding boss 71, and the melted resin fills the recess 18 of the welding tip 11. At this time, when the thickness of the substrate 31 is small due to the variation in the thickness of the substrate 31, the melting volume of the melting boss 71 is increased, so that it cannot be accommodated by the capacity of the recess 18. As a result, the excess resin that protrudes accumulates in the escape opening 19. After the set melting process time has elapsed, the cooling air 91 is supplied from the air pipe 13 to the heated welding tip 11 as shown in FIG. After cooling the inside of the welding tip 11, the air 91 is discharged from the slit 17 to the outside. When the contact surface 16 of the welding tip 11 is cooled and the resin in the melted portion is solidified, the supply of the cooling air 91 is stopped and the heat welding apparatus 1a is raised. As a result, as shown in FIG. 3D, a caulking body 73 having a diameter larger than that of the fixing hole 51 formed by the recess 18 and an excess piece 74 formed by the opening is integrally formed by the caulking portion 76. The substrate 31 is fixed to the molded product 72. The surplus piece 74 is also fixed with a certain thickness. When no surplus is generated in the molten resin, no surplus pieces are generated and the caulking body becomes the caulking portion.

図４は実施例１におけるかしめ部７６の上面図である。かしめ体７３の両側には溶融時に逃げ開口部１９にたまった余剰片７４が形成されている。逃げ開口部１９を設けたことで、余剰分の樹脂が発生した場合その逃げ方向が決まり、定められた位置にまとまった量としてはみ出し部になる。従って、溶着後の余剰片７４と一体になったかしめ体７３の形状も綺麗に形成され、バリ状の樹脂の発生をおさえることが出来る。
逃げ開口部１９については上記の様に２カ所と限定する事無く、溶着ボス７１の溶融体積のばらつきによってその数を定めることができる。
例えば、溶融体積のバラツキが少ない場合、１カ所でもよい。図５（ａ）は樹脂の逃げ開口部１９を１ヵ所にした場合の溶着チップ１１当接面斜視図、また図５（ｂ）は図５（ａ）の溶着チップ１１で形成されたかしめ部７６上面図である。
逆に溶融体積のバラツキが多く見込まれる場合、樹脂の逃げ開口部１９を多く作成すると有効である。 FIG. 4 is a top view of the caulking portion 76 in the first embodiment. On both sides of the caulking body 73, surplus pieces 74 accumulated in the escape opening 19 at the time of melting are formed. By providing the relief opening 19, the escape direction is determined when a surplus amount of resin is generated, and it becomes an overhanging portion as an amount collected at a predetermined position. Therefore, the shape of the caulking body 73 integrated with the surplus piece 74 after welding is also formed beautifully, and generation of burr-like resin can be suppressed.
The number of escape openings 19 is not limited to two as described above, and the number thereof can be determined by the variation in the melt volume of the welding boss 71.
For example, when there is little variation in the melt volume, it may be one place. FIG. 5A is a perspective view of the contact surface of the welding tip 11 when the resin relief opening 19 is provided at one location, and FIG. 5B is a crimped portion formed by the welding tip 11 of FIG. FIG. 76 is a top view.
On the other hand, if a large variation in the molten volume is expected, it is effective to create a large number of resin escape openings 19.

図６（ａ）は樹脂の逃げ開口部１９を４カ所作成した場合の溶着チップ１１当接面１６斜視図、また図６（ｂ）は図６（ａ）の溶着チップ１１で形成されたかしめ部７６上面図である。
以上説明した様に、はみ出した樹脂を逃げ開口部１９に向けることで、溶着チップ１１側面に溶融した樹脂がまわらなくなり、溶融、かしめ後の溶着チップ１１の離型が容易になる。
また、樹脂の逃げ方向を定めることにより、従来の様にバリ発生方向が不確定に発生することがないので、周辺の部品への影響を防止することができる。 6A is a perspective view of the welding chip 11 contact surface 16 when four resin escape openings 19 are formed, and FIG. 6B is a caulking formed by the welding chip 11 of FIG. 6A. FIG.
As described above, by directing the protruding resin toward the escape opening 19, the melted resin is not trapped on the side surface of the welding tip 11, and the mold release of the welding tip 11 after melting and caulking becomes easy.
In addition, by determining the resin escape direction, the burr generation direction does not occur indefinitely as in the prior art, so that it is possible to prevent the influence on peripheral components.

実施例２では、樹脂の逃げ開口部１９を積極的に利用し、かしめ部７６の意匠性を高めた事例（請求項３対応）について説明する。
図７（ａ）は樹脂の逃げ開口部１９の形状を台形に形成した溶着チップ１１の当接面１６の斜視図、また図７（ｂ）は図７（ａ）の溶着チップ１１で形成されたかしめ部７６上面図である。
この溶着チップ１１を用いて溶着すると、溶着チップ１１の逃げ開口部１９が台形になっているため逃げ開口部１９にはみ出した樹脂は台形の余剰片７４となって形成される。
その結果、かしめ体７３と余剰片７４とが一体になったかしめ部７６は「太陽」のイメージの形状になり、意匠性を加味することができる。 In Example 2, a case (corresponding to claim 3) in which the design of the caulking portion 76 is improved by actively using the resin escape opening 19 will be described.
7A is a perspective view of the contact surface 16 of the welding tip 11 in which the shape of the resin escape opening 19 is formed in a trapezoidal shape, and FIG. 7B is formed by the welding tip 11 of FIG. 7A. FIG. 6 is a top view of a caulking portion 76.
When welding is performed using the welding tip 11, the escape opening 19 of the welding tip 11 has a trapezoidal shape, so that the resin protruding from the escape opening 19 is formed as a trapezoidal surplus piece 74.
As a result, the caulking portion 76, in which the caulking body 73 and the surplus piece 74 are integrated, has the shape of an image of the “sun”, and the design can be taken into consideration.

また、図８（ａ）は樹脂の逃げ開口部１９の形状を半円形に形成した溶着チップ１１の当接面１６の斜視図、また図８（ｂ）は図８（ａ）の溶着チップ１１で形成されたかしめ部７６の上面図である。
この溶着チップ１１を用いて溶着すると、溶着チップ１１の逃げ開口部１９が半円形になっているため逃げ開口部１９にはみ出した樹脂は半円形の余剰片７４となって形成される。
その結果、かしめ体７３と余剰片７４とが一体になったかしめ部７６は「花」のイメージの形状になり、意匠性を加味することができる。
本実施例の場合は、樹脂の逃げ開口部１９へ積極的に溶融樹脂を流し込むので予め溶着ボス７１の体積を増加しておくことが望ましい。 8A is a perspective view of the contact surface 16 of the welding tip 11 in which the shape of the resin escape opening 19 is formed in a semicircular shape, and FIG. 8B is the welding tip 11 of FIG. 8A. It is a top view of the caulking part 76 formed by.
When welding is performed using the welding tip 11, the escape opening 19 of the welding tip 11 has a semicircular shape, so that the resin protruding from the escape opening 19 is formed as a semicircular surplus piece 74.
As a result, the caulking portion 76, in which the caulking body 73 and the surplus piece 74 are integrated, has the shape of an image of “flower”, and can add design.
In the case of the present embodiment, since the molten resin is actively poured into the resin escape opening 19, it is desirable to increase the volume of the welding boss 71 in advance.

実施例３では、樹脂の逃げ開口部１９を積極的に利用した別の実施形態（請求項４対応）について説明する。
当接面１６へ任意数の逃げ開口部１９を設けた溶着チップ１１を用いることにより、逃げ開口部１９によって形成される余剰片７４が形成されるが、その余剰片７４の個数を利用して事前に定められたメッセージを表現することができる。
例えば、溶着チップ１１を用いて複数箇所のかしめ溶着により組み立てたユニットを解体する場合、解体が安全に行うことができ、且つ、各部材の損傷も軽減出来る様に予め解体する順序を余剰片７４の個数で定めておく必要がある。
その場合、解体順序に従って逃げ開口部１９の数を多くした複数の溶着チップ１１を用意し、解体時順序にしたがった溶着チップ１１にて順次溶着を行う。解体時には逃げ開口部１９より形成された余剰片７４の数に従って解体を行うことにより目的を達することができた。
なお、図面は実施例１の展開から容易に理解できるので省略する。 In Example 3, another embodiment (corresponding to claim 4) in which the resin escape opening 19 is positively used will be described.
By using the welding tip 11 provided with an arbitrary number of relief openings 19 on the contact surface 16, the surplus pieces 74 formed by the relief openings 19 are formed. The number of the surplus pieces 74 is utilized. Predetermined messages can be expressed.
For example, when a unit assembled by caulking welding at a plurality of locations using the welding tip 11 is disassembled, the order of disassembling in advance is set so that disassembly can be performed safely and damage to each member can be reduced. It is necessary to determine the number of items.
In that case, a plurality of welding tips 11 having a larger number of escape openings 19 are prepared in accordance with the disassembling order, and the welding tips 11 are sequentially welded according to the order of disassembling. At the time of dismantling, the object could be achieved by disassembling according to the number of surplus pieces 74 formed from the escape opening 19.
The drawings are omitted because they can be easily understood from the development of the first embodiment.

比較例として従来の熱溶着装置について説明する。成形品７２と被固定物である基板３１とは実施例１と同一である。図９、図１０は従来の熱溶着装置及びボス溶着部の断面図である。従来の熱溶着装置１ａに用いた溶着チップ１１の当接面１６の形状はお椀形であり、被固定物の表面と接する当接面１６の周囲の部分はフラットなかたちになっている。樹脂の溶融温度に達すると溶着ボス７１は押し圧で潰されると共に、溶融してお椀形の当接面１６全体に充満される。しかし、溶融樹脂が当接面１６の容量より多い場合は、お椀形のチップ当接面１６の周囲の部分と被固定物との隙間から溶融した溶着ボス７１の樹脂がはみ出し、この樹脂は図１０に示すように溶着チップ１１の側面に付着７４してしまう。熱溶着装置の冷却が終了し、かしめ体７３と形成してから上昇させて離脱させようとしても溶着チップの側面に樹脂が付着しているためスムーズに離れない。また、図１１に示すように、はみ出した樹脂が薄いバリ７５になり、製品内に組み込まれてから剥離落下して異物となり、製品不良の原因となる場合がある。   As a comparative example, a conventional heat welding apparatus will be described. The molded product 72 and the substrate 31 that is the object to be fixed are the same as those in the first embodiment. 9 and 10 are sectional views of a conventional heat welding apparatus and a boss welding portion. The shape of the contact surface 16 of the welding tip 11 used in the conventional heat welding apparatus 1a is bowl-shaped, and the peripheral portion of the contact surface 16 that contacts the surface of the fixed object is flat. When the melting temperature of the resin is reached, the welding boss 71 is crushed by the pressing pressure and melted to fill the entire bowl-shaped contact surface 16. However, when the amount of the molten resin is larger than the capacity of the contact surface 16, the melted resin of the welding boss 71 protrudes from the gap between the peripheral portion of the bowl-shaped chip contact surface 16 and the object to be fixed. 10, it adheres 74 to the side surface of the welding tip 11. Even if the cooling of the thermal welding apparatus is completed and the caulking body 73 is formed and then lifted and separated, the resin is adhered to the side surface of the welding chip, so that it does not leave smoothly. Further, as shown in FIG. 11, the protruding resin becomes a thin burr 75, and after being incorporated in the product, it may be peeled and dropped to become a foreign substance, which may cause a product defect.

（ａ）は本発明熱溶着装置の斜視図、（ｂ）は溶着チップの当接面部分の拡大図。(A) is a perspective view of this invention heat welding apparatus, (b) is an enlarged view of the contact surface part of a welding chip | tip. 熱溶着装置断面図。FIG. （ａ）〜（ｄ）は、熱溶着装置を用いた溶着作業の説明図。(A)-(d) is explanatory drawing of the welding operation | work using a heat welding apparatus. 実施例１におけるかしめ部の上面図。FIG. 3 is a top view of a caulking portion in Embodiment 1. （ａ）は樹脂逃げ開口部を１ヵ所にした場合の溶着チップの当接面の斜視図、（ｂ）は図５（ａ）の溶着チップで溶融したかしめ部の上面図。(A) is a perspective view of the contact surface of the welding tip when the resin escape opening is in one place, and (b) is a top view of the caulking portion melted by the welding tip of FIG. 5 (a). （ａ）は樹脂逃げ開口部を４ヵ所作成した場合の溶着チップの当接面の斜視図、（ｂ）は図６（ａ）の溶着チップで溶融したかしめ部の上面図。(A) is a perspective view of the contact surface of the welding tip when four resin escape openings are created, and (b) is a top view of the crimped portion melted by the welding tip of FIG. 6 (a). （ａ）は樹脂逃げ開口部の形状を台形に形成した溶着チップの当接面の斜視図、（ｂ）は図７（ａ）の溶着チップで溶融したかしめ部の上面図。(A) is a perspective view of the contact surface of the welding chip | tip which formed the shape of the resin escape opening part in trapezoid, (b) is a top view of the crimping part fuse | melted with the welding chip | tip of Fig.7 (a). （ａ）は樹脂逃げ開口部の形状を半円形に形成した溶着チップの当接面の斜視図、（ｂ）は図８（ａ）の溶着チップで溶融したかしめ部の上面図。(A) is a perspective view of the contact surface of the welding chip | tip which formed the shape of the resin escape opening part in the semicircle, (b) is a top view of the crimping part fuse | melted with the welding chip | tip of Fig.8 (a). 比較例１の熱溶着装置を用いて溶着する説明図。Explanatory drawing welded using the heat welding apparatus of the comparative example 1. FIG. 比較例１における余剰の溶着樹脂が溶着チップの側面に付着した状態の説明図。Explanatory drawing of the state in which the excess welding resin in the comparative example 1 adhered to the side surface of the welding tip. 比較例１の熱溶着装置を用いて溶着した時にできるかしめ部の一例の説明図。Explanatory drawing of an example of the caulking part made when it welds using the heat welding apparatus of the comparative example 1. FIG.

符号の説明Explanation of symbols

１ａ 熱溶着装置
１１ 溶着チップ
１２ 電線
１３ エアーパイプ
１４ 支持部材
１５ カバー
１６ 当接面
１７ スリット
１８ 凹部
１８ａ 周縁
１９ 樹脂逃げ開口部
３１ 基板
５１ 固定孔
７１ 溶着ボス
７２ 成形品
７３ かしめ体
７４ 余剰片
７５ バリ
７６ かしめ部
９１ 冷却エアー

DESCRIPTION OF SYMBOLS 1a Thermal welding apparatus 11 Welding tip 12 Electric wire 13 Air pipe 14 Support member 15 Cover 16 Contact surface 17 Slit 18 Recess 18a Perimeter 19 Resin relief opening 31 Substrate 51 Fixing hole 71 Welding boss 72 Molded product 73 Caulking body 74 Surplus piece 75 Bali 76 Caulking part 91 Cooling air

Claims (4)

熱可塑性樹脂成形品側に形成された溶着ボスを熱可塑性樹脂製被固定物側に形成された固定孔に通し、この固定孔から突き出た前記溶着ボスの先端側に溶着チップの先端面に形成した凹状の当接面を押し当てて溶着ボスが固定孔から突き出た部分を加熱溶融して固定孔の直径より大きい直径を持つかしめ部を形成することにより、成形品に被固定物を固定する際に用いられる溶着チップにおいて、前記溶着チップの先端面に形成された当接面の周縁に溶融した余剰の樹脂を逃がすための逃げ開口部を設けたことを特徴とする溶着チップ。   The welding boss formed on the thermoplastic resin molded product side is passed through the fixing hole formed on the thermoplastic resin fixed object side, and the tip of the welding tip is formed on the tip side of the welding boss protruding from the fixing hole. The object to be fixed is fixed to the molded product by pressing the concave contact surface and heating and melting the portion where the welding boss protrudes from the fixing hole to form a caulking portion having a diameter larger than the diameter of the fixing hole. The welding tip used at the time is provided with a relief opening for escaping excess molten resin at the periphery of the contact surface formed on the tip surface of the welding tip. 請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、溶融樹脂のはみ出し方向を制御できるように１ヶ所又は複数ヶ所形成されていることを特徴とする溶着チップ。   The welding tip according to claim 1, wherein the clearance opening formed at the periphery of the contact surface of the welding tip is formed at one or a plurality of locations so that the protruding direction of the molten resin can be controlled. 請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、かしめ部の周囲に任意形状のはみ出し部を形成して、意匠性を持たせることができるように、任意形状に形成されていることを特徴とする溶着チップ。   The relief opening formed at the periphery of the contact surface of the welding tip according to claim 1 has an arbitrary shape so that an arbitrarily shaped protruding portion can be formed around the caulking portion so as to have a design property. It is formed in the welding tip characterized by the above-mentioned. 請求項１記載の溶着チップの当接面の周縁に形成された逃げ開口部は、かしめ部の周囲に任意数のはみ出し部を形成して、メッセージ性をもたせることができるように特定された数形成されていることを特徴とする溶着チップ。
The number of the relief openings formed on the periphery of the contact surface of the welding tip according to claim 1 is specified so that an arbitrary number of protruding portions can be formed around the caulking portion to provide a message property. A welding tip that is formed.
JP2004274470A 2004-09-22 2004-09-22 Welding chip Pending JP2006088415A (en)

Priority Applications (1)

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015189028A (en) * 2014-03-27 2015-11-02 ムネカタインダストリアルマシナリー株式会社 Thermal welding tip
JP2016074126A (en) * 2014-10-06 2016-05-12 株式会社デンソー Member to be bonded and accelerator device using the same
US20160243754A1 (en) * 2015-02-20 2016-08-25 Zf Friedrichshafen Ag Device and method for hot-rivetting with a plastic rivet and hot-rivetted plastic rivet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015189028A (en) * 2014-03-27 2015-11-02 ムネカタインダストリアルマシナリー株式会社 Thermal welding tip
JP2016074126A (en) * 2014-10-06 2016-05-12 株式会社デンソー Member to be bonded and accelerator device using the same
US20160243754A1 (en) * 2015-02-20 2016-08-25 Zf Friedrichshafen Ag Device and method for hot-rivetting with a plastic rivet and hot-rivetted plastic rivet
US10167889B2 (en) * 2015-02-20 2019-01-01 Zf Friedrichshafen Ag Device and method for hot-rivetting with a plastic rivet and hot-rivetted plastic rivet

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