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JPH0221221Y2 - - Google Patents

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Publication number
JPH0221221Y2
JPH0221221Y2 JP1985098011U JP9801185U JPH0221221Y2 JP H0221221 Y2 JPH0221221 Y2 JP H0221221Y2 JP 1985098011 U JP1985098011 U JP 1985098011U JP 9801185 U JP9801185 U JP 9801185U JP H0221221 Y2 JPH0221221 Y2 JP H0221221Y2
Authority
JP
Japan
Prior art keywords
heating element
stud
center electrode
plastic
electrode
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
Application number
JP1985098011U
Other languages
Japanese (ja)
Other versions
JPS625917U (en
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 filed Critical
Priority to JP1985098011U priority Critical patent/JPH0221221Y2/ja
Publication of JPS625917U publication Critical patent/JPS625917U/ja
Application granted granted Critical
Publication of JPH0221221Y2 publication Critical patent/JPH0221221Y2/ja
Expired 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
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • 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
    • B29C66/70—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
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges

Landscapes

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

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は熱可塑性プラスチツクに形成した突起
を他の部材に貫通して加熱によりカシメる装置に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for penetrating a protrusion formed in a thermoplastic plastic into another member and caulking it by heating.

〔従来の技術〕[Conventional technology]

熱可塑性プラスチツク部材に形成した突起を他
のプラスチツク又は金属等の被カシメ材に設けた
孔に貫通させ、プラスチツク突起の先端を加熱し
た工具で加圧して丸鋲頭の様なカシメ形状にカシ
メを行なう技術は、各種計器の表示板にシエード
を装着する場合等に広く利用されている。 A protrusion formed on a thermoplastic plastic member is passed through a hole made in another plastic or metal to be caulked, and the tip of the plastic protrusion is pressurized with a heated tool to caulk into a round rivet-like shape. This technique is widely used when attaching shades to the display boards of various instruments.

かかるプラスチツクのカシメ装置としては実開
昭57−43128号（実願昭55−085395号）公報があ
る。この装置は第３図に示すように、外周電極を
兼ねた装置本体２の先端部にシート状の金属製電
気抵抗体からなる発熱体１をその周縁で支持し発
熱体の裏面中央に圧接させた中心電極３を設け、
中心電極と発熱体の周縁をシーケンス制御電源４
に接続したものである。中心電極３を発熱体１の
裏面に適当な圧力で圧接するために、中心電極３
を外周電極及び放熱器を兼ねる装置本体２内に絶
縁パイプ５で絶縁しながら上下可動に配置し、上
方からバネ６の力により発熱体１に圧接してい
る。このカシメ装置によれば、プラスチツク部材
７の突起８を被カシメ材９の孔に貫通させた後、
通電で加熱した発熱体１を突起８に押しあてプラ
スチツクを軟化させて発熱体底部の形状に沿つて
変形させ、通電停止後も加圧したまゝでプラスチ
ツクを冷却硬化させることによつて、丸鋲頭１０
の様な形状にカシメを行なうことができる。 Such a plastic caulking device is disclosed in Japanese Utility Model Application No. 57-43128 (Utility Model Application No. 55-085395). As shown in Fig. 3, this device has a heating element 1 made of a sheet-shaped metal electric resistor supported at its periphery at the tip of the device main body 2, which also serves as an outer peripheral electrode, and is pressed against the center of the back surface of the heating element. A center electrode 3 is provided,
Sequence control power supply 4 for the center electrode and the periphery of the heating element
It is connected to. In order to press the center electrode 3 against the back surface of the heating element 1 with an appropriate pressure, the center electrode 3 is
is arranged movably up and down while being insulated by an insulating pipe 5 in the device main body 2, which also serves as an outer peripheral electrode and a heat sink, and is pressed against the heating element 1 from above by the force of a spring 6. According to this crimping device, after the protrusion 8 of the plastic member 7 is passed through the hole of the material 9 to be crimped,
The heating element 1 heated by energization is pressed against the protrusion 8 to soften the plastic and deform it to follow the shape of the bottom of the heating element, and even after the energization is stopped, the plastic is cooled and hardened while being kept under pressure. rivet head 10
It can be caulked into a shape like this.

しかし、従来のカシメ装置においては、発熱体
としてニクロムリボン等が用いられるため、高温
加熱の繰り返しによつて発熱体上に酸化膜が形成
され、発熱体と中心電極との接触抵抗が増大する
欠点があつた。中心電極先端を例えば非酸化性の
銀等の電極材料に代えても発熱体酸化膜の接触抵
抗は減少しなかつた。接触抵抗の増大によつて、
発熱体に流れる電流が制限され、プラスチツクの
加熱効率が低下する結果となつた。逆に、電流を
増やすために電圧を上げれば、発熱体の中心電極
接触部の過熱及び酸化の進行により発熱体の板厚
が0.2〜0.3mmと薄いことと相まつて、発熱体が腐
食したり孔があく現象が生じていた。 However, in conventional caulking devices, since a nichrome ribbon or the like is used as the heating element, an oxide film is formed on the heating element due to repeated high-temperature heating, which increases the contact resistance between the heating element and the center electrode. It was hot. Even if the tip of the center electrode was replaced with an electrode material such as non-oxidizing silver, the contact resistance of the heating element oxide film did not decrease. Due to the increase in contact resistance,
The current flowing through the heating element was restricted, resulting in a reduction in the heating efficiency of the plastic. Conversely, if the voltage is increased to increase the current, overheating and oxidation of the contact area of the center electrode of the heating element, combined with the fact that the thickness of the heating element is as thin as 0.2 to 0.3 mm, may cause the heating element to corrode. There was a phenomenon of holes being formed.

〔考案が解決しようとする問題点〕[Problem that the invention attempts to solve]

本考案の目的は、発熱体と中心電極との接触抵
抗を最小限に低減させて加熱電流を増大させると
同時に、常時安定した加熱電流を得ることができ
るプラスチツク突起のカシメ装置を提供すること
である。 The purpose of the present invention is to provide a plastic protrusion caulking device that can minimize the contact resistance between the heating element and the center electrode, increase the heating current, and at the same time obtain a stable heating current at all times. be.

〔問題点を解決するための手段〕[Means for solving problems]

本考案によるプラスチツク突起のカシメ装置
は、プラスチツク突起をカシメるための成形用型
底部を有する円筒形の金属発熱体をその周縁部で
外周電極を兼ねる装置本体に支持し、金属発熱体
の成形用型底部の裏面ほぼ中央に金属細線のスタ
ツドを溶接して固着し、このスタツドを中心電極
下端部のスタツド差込孔中に摺接させ、中心電極
及び外周電極を発熱体加熱用電源に接続したもの
である。 The device for caulking plastic protrusions according to the present invention has a cylindrical metal heating element having a mold bottom for caulking plastic protrusions, supported at its periphery by a device main body which also serves as an outer peripheral electrode, and is used for molding the metal heating element. A thin metal wire stud was welded and fixed to approximately the center of the back surface of the bottom of the mold, and this stud was slid into the stud insertion hole at the lower end of the center electrode, and the center electrode and outer electrode were connected to a power source for heating the heating element. It is something.

本考案で使用するスタツドは銅または銅合金、
例えば燐青銅、耐熱性に優れたアルミニウム青
銅、耐火花放電性に優れたベリリウム銅等の低電
気抵抗性の金属細線が好ましい。また、この金属
細線の直径は約0.5〜１mm程度が好ましく、余り
太くなると細線を伝わつて発熱体から中心電極へ
の熱の放散が大きくなるために加熱効率が低下す
る。尚、銅または銅合金系の細いスタツドを鉄合
金系またはニクロム系の発熱体に固着するために
は、電気抵抗溶接や通常のアーク溶接では困難で
あり、スタツド溶接による方法が適切である。 The studs used in this invention are copper or copper alloy,
For example, thin metal wires with low electrical resistance, such as phosphor bronze, aluminum bronze with excellent heat resistance, and beryllium copper with excellent spark discharge resistance, are preferable. Further, the diameter of the thin metal wire is preferably about 0.5 to 1 mm; if it is too thick, heat dissipation from the heating element to the center electrode increases through the thin wire, resulting in a decrease in heating efficiency. Note that it is difficult to fix a thin copper or copper alloy stud to an iron alloy or nichrome heating element by electric resistance welding or ordinary arc welding, and stud welding is appropriate.

〔実施例〕〔Example〕

第１図は本考案のプラスチツク突起カシメ装置
の具体例を示す断面図であり、第２図は本考案の
発熱体と中心電極との組合わせを示す図である。
発熱体１はニクロムリボン等のシート状金属を中
央から折り曲げて円筒状にし、その底部にはカシ
メ形状に対応した成形用型底部１ａを形成してあ
る。例えば、第２図Ｂ及びＣに示す具体例では、
成形用型底部１ａは外に向つて凹面を形成してい
るので、カシメられたプラスチツク突起は丸鋲頭
になる。この発熱体１の成形用型底部１ａの裏面
中央部には金属細線のスタツド１１をスタツド溶
接により固着してある。このスタツド１１を差込
むための差込孔１２を中心電極３の下端部にスタ
ツド直径より僅かに小径に形成し、更に差込孔１
２を通つて直径方向に差込孔１２の直径より細い
スリツト１３を設けてある。従つて、中心電極３
の差込孔１２に差込まれたスタツド１１はスリツ
ト１３によるバネ作用によつて確実に保持され、
スタツド１１と中心電極３は充分に良好な電気的
接続が得られる。特に、中心電極３をスタツド１
１と同じ銅または銅合金で作製すれば接触抵抗を
一層小さくできる。 FIG. 1 is a sectional view showing a specific example of the plastic protrusion caulking device of the present invention, and FIG. 2 is a view showing a combination of the heating element and center electrode of the present invention.
The heating element 1 has a cylindrical shape formed by bending a sheet metal such as a nichrome ribbon from the center, and a mold bottom 1a corresponding to the caulking shape is formed at the bottom of the cylinder. For example, in the specific example shown in FIGS. 2B and C,
Since the mold bottom 1a forms an outwardly concave surface, the caulked plastic protrusion becomes a round stud head. A stud 11 of thin metal wire is fixed to the center of the back surface of the mold bottom 1a of the heating element 1 by stud welding. An insertion hole 12 into which the stud 11 is inserted is formed at the lower end of the center electrode 3 with a diameter slightly smaller than the diameter of the stud.
A slit 13, which is narrower than the diameter of the insertion hole 12, is provided in the diametrical direction through the insertion hole 2. Therefore, the center electrode 3
The stud 11 inserted into the insertion hole 12 is securely held by the spring action of the slit 13.
A sufficiently good electrical connection between the stud 11 and the center electrode 3 can be obtained. In particular, the center electrode 3 is connected to the stud 1.
If it is made of the same copper or copper alloy as No. 1, the contact resistance can be further reduced.

円筒形の発熱体１はその周縁部が外周電極及び
放熱器を兼ねる装置本体２の下端部に当接され、
固定ネジ筒１４によつて固定されている。中心電
極３は装置本体２の中心軸に沿つた貫通孔にテフ
ロン、シリコーンゴム、ガラス繊維織物、マイカ
等の絶縁パイプ５を介して上下可動に備えられて
いる。中心電極３の上端部にはネジが形成され、
ベークライト等の絶縁板１５のネジ孔に挿入され
て中心電極固定用ナツト１６で固定される。発熱
体１のスタツド１１を中心電極３下端部の差込孔
１２に差込む程度は中心電極３を上下に調整して
中心電極固定ナツト１６で固定することにより行
なわれる。中心電極３の上端部にはリード線１９
がリード線固定ナツト１７により接続される。更
に、絶縁板１５は絶縁板固定ネジ１８によつて別
のリード線２０と一緒に装置本体２に固定され
る。リード線１９，２０は発熱体加熱用電源（図
示せず）に接続されている。 The cylindrical heating element 1 has its peripheral edge in contact with the lower end of the device main body 2, which also serves as an outer peripheral electrode and a radiator,
It is fixed by a fixed screw tube 14. The center electrode 3 is provided in a through hole along the central axis of the device body 2 via an insulating pipe 5 made of Teflon, silicone rubber, glass fiber fabric, mica, etc. so as to be movable up and down. A screw is formed at the upper end of the center electrode 3,
It is inserted into a screw hole of an insulating plate 15 made of Bakelite or the like and fixed with a center electrode fixing nut 16. The stud 11 of the heating element 1 is inserted into the insertion hole 12 at the lower end of the center electrode 3 by adjusting the center electrode 3 up and down and fixing it with the center electrode fixing nut 16. A lead wire 19 is attached to the upper end of the center electrode 3.
are connected by a lead wire fixing nut 17. Further, the insulating plate 15 is fixed to the device main body 2 together with another lead wire 20 by an insulating plate fixing screw 18. Lead wires 19 and 20 are connected to a power source (not shown) for heating the heating element.

本考案の装置を用いて、小型ラジオ、カセツト
レコーダー等の表示板のABS樹脂製の本体に形
成した直径３mmのカシメ用突起を、照明用のアク
リルランプシエードの孔に貫通し、突出した部分
をカシメる場合の加工諸元の一例を下記する： 発熱体先端直径 4.5mm スタツド直径 0.5mm 加熱電流 35A（AC） 加熱電圧 1V（AC） 加工荷重 ２Kg 通電時間 1.2秒 冷却時間 ２秒 発熱体消費電力 10W 〔考案の効果〕 本考案においては、カシメ装置の発熱体の成形
用型底部裏面に金属細線のスタツドを溶接固定
し、このスタツドを中心電極に接続する構成とし
たので、発熱体と中心電極との電気的接触不良が
皆無となり、接触抵抗が実質的になくなるので加
熱電流を増大でき、加えて経時的にも安定した加
熱電流が得られる。また、スタツドが金属の細線
で構成されているので、熱伝導による発熱体から
中心電極への熱の放散が制限されるので、発熱体
の成形用型底部中央部での電流密度が最大である
ことと相まつて、この部分での発熱効果が著しく
上昇する。 Using the device of the present invention, a 3 mm diameter caulking protrusion formed on the ABS resin body of a display board of a small radio, cassette recorder, etc. is penetrated into a hole in an acrylic lampshade for lighting, and the protruding portion is An example of processing specifications when caulking is shown below: Heating element tip diameter 4.5mm Stud diameter 0.5mm Heating current 35A (AC) Heating voltage 1V (AC) Processing load 2Kg Current application time 1.2 seconds Cooling time 2 seconds Heating element consumption Power: 10W [Effects of the invention] In the present invention, a thin metal wire stud is welded and fixed to the back of the bottom of the mold for forming the heating element of the crimping device, and this stud is connected to the center electrode, so that the heating element and the center Since there is no electrical contact failure with the electrode and contact resistance is substantially eliminated, the heating current can be increased, and in addition, a heating current that is stable over time can be obtained. In addition, since the stud is made of thin metal wire, the dissipation of heat from the heating element to the center electrode by thermal conduction is restricted, so the current density is maximum at the center of the bottom of the mold for forming the heating element. Coupled with this, the heat generation effect in this part increases significantly.

従つて、本考案のカシメ装置ではプラスチツク
突起のカシメ効率を倍加することができ、超音波
ウエルダーによるカシメ効率に匹敵するに至つ
た。 Therefore, the crimping device of the present invention can double the crimping efficiency of plastic protrusions, and has come to rival the crimping efficiency of an ultrasonic welder.

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

第１図は本考案のプラスチツク突起カシメ装置
の縦断面図である。第２図は本考案のプラスチツ
ク突起カシメ装置の発熱体と中心電極の組合わせ
を示す図であつて、第２図Ａは中心電極下端の斜
視図、第２図Ｂは発熱体の斜視図、及び第２図Ｃ
は中心電極に接続した発熱体の断面図である。第
３図は従来のプラスチツク突起カシメ装置の一部
断面を示した側面図と被加工物であるプラスチツ
ク部材のカシメ前後の状態を示した側面図であ
る。 １……発熱体、１ａ……成形用型底部、２……
装置本体、３……中心電極、７……プラスチツク
部材、８……プラスチツク突起、９……被カシメ
材、１０……丸鋲頭、１１……スタツド、１２…
…スタツド差込孔、１３……スリツト、１５……
絶縁板。 FIG. 1 is a longitudinal sectional view of the plastic protrusion crimping device of the present invention. FIG. 2 is a diagram showing a combination of a heating element and a center electrode of the plastic protrusion caulking device of the present invention, in which FIG. 2A is a perspective view of the lower end of the center electrode, FIG. 2B is a perspective view of the heating element, and Figure 2C
is a cross-sectional view of a heating element connected to a center electrode. FIG. 3 is a side view showing a partial cross section of a conventional plastic protrusion caulking device and a side view showing the state of a plastic member as a workpiece before and after caulking. 1... Heating element, 1a... Molding mold bottom, 2...
Apparatus body, 3... Center electrode, 7... Plastic member, 8... Plastic protrusion, 9... Material to be caulked, 10... Round rivet head, 11... Stud, 12...
...Stud insertion hole, 13...Slit, 15...
Insulating board.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] プラスチツク突起をカシメるための成形用型底
部を有する円筒形の金属発熱体をその周縁部で外
周電極を兼ねる装置本体に支持し、金属発熱体の
成形用型底部の裏面ほぼ中央に金属細線のスタツ
ドを溶接して固着し、該スタツドを中心電極下端
部のスタツド差込孔中に摺接させ、中心電極及び
外周電極を発熱体加熱用電源に接続したプラスチ
ツク突起のカシメ装置。 A cylindrical metal heating element having a bottom of a mold for caulking plastic protrusions is supported at its periphery by the main body of the device which also serves as an outer peripheral electrode, and a thin metal wire is placed approximately in the center of the back surface of the bottom of the mold of the metal heating element. A device for caulking a plastic protrusion, in which a stud is welded and fixed, the stud is slid into a stud insertion hole at the lower end of a center electrode, and the center electrode and outer electrode are connected to a power source for heating a heating element.
JP1985098011U 1985-06-27 1985-06-27 Expired JPH0221221Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985098011U JPH0221221Y2 (en) 1985-06-27 1985-06-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985098011U JPH0221221Y2 (en) 1985-06-27 1985-06-27

Publications (2)

Publication Number Publication Date
JPS625917U JPS625917U (en) 1987-01-14
JPH0221221Y2 true JPH0221221Y2 (en) 1990-06-08

Family

ID=30965546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985098011U Expired JPH0221221Y2 (en) 1985-06-27 1985-06-27

Country Status (1)

Country Link
JP (1) JPH0221221Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0645116B2 (en) * 1987-09-17 1994-06-15 日本スピンドル製造株式会社 Method of transferring a book on a book punching machine
JP2957463B2 (en) * 1996-03-11 1999-10-04 日本電気株式会社 Patch antenna and method of manufacturing the same

Also Published As

Publication number Publication date
JPS625917U (en) 1987-01-14

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