JPH0311253B2 - - Google Patents

Info

Publication number
JPH0311253B2
JPH0311253B2 JP13571283A JP13571283A JPH0311253B2 JP H0311253 B2 JPH0311253 B2 JP H0311253B2 JP 13571283 A JP13571283 A JP 13571283A JP 13571283 A JP13571283 A JP 13571283A JP H0311253 B2 JPH0311253 B2 JP H0311253B2
Authority
JP
Japan
Prior art keywords
mounting base
workpiece
stud
protrusion
chuck
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
JP13571283A
Other languages
Japanese (ja)
Other versions
JPS6027522A (en
Inventor
Takuo Yoshida
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.)
Nifco Inc
Original Assignee
Nifco Inc
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 Nifco Inc filed Critical Nifco Inc
Priority to JP58135712A priority Critical patent/JPS6027522A/en
Publication of JPS6027522A publication Critical patent/JPS6027522A/en
Publication of JPH0311253B2 publication Critical patent/JPH0311253B2/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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin 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
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/069—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding the welding tool cooperating with specially formed features of at least one of the parts to be joined, e.g. cooperating with holes or ribs of at least one 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
    • B29C66/01—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30221—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being point-like
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29C66/83—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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3044—Bumpers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/727—Fastening elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

この発明は軸部と、軸部の一端に取付基部を有
するプラスチツク製のスタツドを取付基部でワー
クに固定するための新規な固定方法に関する。 ワークがプラスチツク、金属板などからなり、
これにプラスチツクで成形したスタツドを軸部の
一端の取付基部で固定し、その軸部を利用して他
の適宜な部品とワークを取付ける場合、従来はワ
ークに穿つた孔に取付基部の裏面に設けたアンカ
ー（錨）脚を挿し込んで固定していたが、孔明け
作業を要することや、水洩れ、錆の問題が課題と
されていた。そこでこれを解消するため取付基部
を接着剤や両面粘着テープでワークに固定する方
法が用いられている。しかし、そのためには接着
剤、両面粘着テープなどの消費資材を用意して置
く必要があると共に、接着剤を塗布したり、両面
粘着テープを所定の大きさに切断する等の手数が
かゝり、加えて熱、経時変化による接着強度の虞
があつた。そこで本発明はワークに対しプラスチ
ツクスタツドの取付基部を圧接し、且つスタツド
を或る程度の高速で回転すると、ワークと取付基
部の対向面は摩擦で発熱し、ワークの材質に応じ
てワークと取付基部双方の対向面或いは取付基部
の対向面だけが溶融してワーク取付基部が融着す
ることを見出し、本発明を完成したのである。 従つて本発明によれば溶着剤や粘着テープを使
用することなく、たゞプラスチツクスタツドをワ
ークに押付け、或る程度の高速で回転させるだけ
で固定できる。そして、ワークはプラスチツクの
成形品であることに限定されず、金属板、木板、
などでもよく、金属板、木板などの場合は部品の
固定面にプラスチツクの被覆層を設けて置くと
か、木板の場合はプラスチツクの滲透させて置く
とよい。 この様に本発明は摩擦熱に依存して固定を行う
のでプラスチツクスタツドとワークの材質、スタ
ツドをワークに押付ける圧接力、スタツドの回転
数に応じて固定に要する所要時間は影響を受ける
が、それでも実験の結果ではワークとスタツドが
ともにプラスチツクの場合、回転数約9000RPM、
圧力約13.5Kg／cm2で約１秒、回転数約4000RPM、
圧力約34Kg／cm2で約６〜10秒前後の所要時間で固
定が行える。 以下、図面を参照して本発明を説明する。 １はプラスチツク製のスタツドで、軸部２と取
付基部３を一体に有する。取付基部３は軸部の一
端に形成された円盤体からなり、この実施例では
取付基部は中心にワークに位置決めするための突
部３′を備えている。軸部２は中空の円筒形で、
筒壁の回りには等間隔に、この実施例では２個所
に倒Ｕ字形の切込み４で外方に張出した係止爪５
を形成してある。 このスタツド１は、これに限定されるものでは
ないが例えば取付基部３によりワークである自動
車の硬質塩化ビニール製バンパーの裏面に固定
し、軸部を自動車のボデーの前面にある孔に押込
み、係止爪５を孔の裏面の縁に係止してバンパー
のボデーに取付けることを予定している。そし
て、取付基部３の裏面には一個所ないし、円周方
向に等間隔に複数個所、所定の断面積の突起６を
突設してある。 固定を行うには電動或いは空圧作動の回転工具
７のチヤツク８に軸部２を差込み、チヤツクの回
りに設けられてチヤツク端面から突出し、回転駆
動される駆動突起９を取付基部裏面の突起６に回
転方向に係合し、駆動突起９の回転で突起６を追
い回してスタツドを回転させ、且つ取付基部３を
ワーク１０に押付ける。 回転工具は電動式の場合、約4000RPMが限度
であるが、空圧作動によると約10000RPMも可能
である。 これらの工具は携帯型のドリル或いは卓上ボー
ル盤に類似し、チヤツクは差込まれた軸部を軽く
摩擦保持するだけで、回転動力はチヤツクの端面
から突出する駆動突起９がチヤツクの回りで回転
して取付基部の突起６を追い回すことにより伝え
る。そして、取付基部のワークに対する押付けは
携帯型の場合は従来の電動ドリルなどと同じく作
業員が手作業で行い、ボール盤類似の場合は操作
レバーを操作し、チヤツクを下降させる。 この場合、取付基部の中心にこの実施例の様に
突部３′を設けてあればワーク１０にも固定位置
に対応して突部３′を受入れる凹部１０′を設けて
置き、突部３′、凹部１０′を係合して作業を行う
と固定位置がずれ動かず、正確な位置に固定でき
る。勿論、この位置決めは取付基部に凹部、ワー
クに突部を設けても同効である。 又、工具には駆動突起９の回りを囲む静止筒１
１を設け、静止筒の端面と、これに対応するワー
クの面に相係合する突部と凹部からなる位置決め
装置１２を形成し、工具をワークに対して位置決
めしてもよい。勿論、位置決め装置３′，１０′と
１２はどちらか一方でもよいし、双方を併用して
もよい。尚、駆動突起９は静止筒１１の内周と、
チヤツク８の外周に嵌合し、動力で回転駆動され
る回転筒９′の端面に設けられている。 こうしてチヤツク８に軸部２を差込んだスタツ
ドの取付基部３をワークに押付けながら、駆動突
起９で取付基部裏面の突起６を追い回してスタツ
ドを高速回転すると、その摩擦熱で少くとも取付
基部のワークに対向する表面は溶融し、粘性を帯
び、工具の回転動力に負荷を加える。そして、そ
の粘性で取付基部とワークが融着しようとして工
具に加える負荷が或る一定以上に高まる駆動突起
９は突起６を取付基部の裏面から剪断し、工具は
空転する。 こうして突起６の破断でスタツドとワークが融
着し、固定の完了したことが判明する。 図示のスタツドはPBT樹脂（ポリブチレンテ
レフタレート）で成形し軸部２が直径約５mm、長
さ約6.5mm、取付基部３が直径約15mm、厚さ約1.3
mmで、突起６は一辺約1.5mmの断面形状が正方形
で、高さ約２mmのものを取付基部の外周沿いに
180°の位相で設けた。これを工具により約
3500RPMの速度で回転し、約35Kg／cm2の力でワ
ークに圧接させた所、約６〜７秒後に突起６は破
断し、スタツドの取付基部はワークに固定され
た。 同様なスタツドをPBT以外のプラスチツク、
ABS、PP、ナイロンで成形し、ワークとして
ABSとPPの二種類のパネルに固定した場合のデ
ータを示す。 尚、工具は携帯式の電動ドリルのチヤツクを改
造し、これをハンドブレスの昇降台１３に取付け
（第６図）、ワークへ圧接力を34Kg／cm2、回転数約
3500RPMで行つた結果のものである。 又、剥離試験は固定部を常温に維持して破か
いした結果のもの、剥離試験は固定部を常温か
ら一旦−40℃に２時間保ち、次に＋80℃に２時間
保ち、その後常温（20℃）に３時間保つてから破
壊した結果のもので、Ａは取付基部を一部含んで
軸部がもげ、Ｂは軸部が根本で取付基部から千切
れ、Ｃは取付基部がワークから剥離したことを示
し、夫々３回宛行つた平均を示す。 The present invention relates to a new fixing method for fixing a plastic stud having a shaft and a mounting base at one end of the shaft to a workpiece using the mounting base. The workpiece is made of plastic, metal plate, etc.
A plastic stud is fixed to this with the mounting base at one end of the shaft, and when the shaft is used to attach other appropriate parts and a workpiece, conventionally, the stud is attached to the back of the mounting base in a hole drilled in the workpiece. They were fixed by inserting anchor legs, but there were issues with the need for drilling, water leakage, and rust. To solve this problem, a method is used in which the mounting base is fixed to the workpiece using adhesive or double-sided adhesive tape. However, in order to do this, it is necessary to prepare consumable materials such as adhesives and double-sided adhesive tape, and it is also time-consuming to apply the adhesive and cut the double-sided adhesive tape to the specified size. In addition, there was a risk that the adhesive strength would deteriorate due to heat and changes over time. Therefore, in the present invention, when the mounting base of a plastic stud is pressed into contact with the workpiece and the stud is rotated at a certain high speed, the opposing surfaces of the workpiece and the mounting base generate heat due to friction, and the workpiece and the mounting base are heated depending on the material of the workpiece. They discovered that the workpiece mounting base was fused by melting only the opposing surfaces of both bases or the mounting base, and completed the present invention. Therefore, according to the present invention, the plastic stud can be fixed simply by pressing the workpiece against the workpiece and rotating it at a certain high speed without using any adhesive or adhesive tape. The workpiece is not limited to plastic molded products, but also metal plates, wooden boards,
In the case of metal plates, wooden plates, etc., it is better to provide a plastic coating layer on the fixing surface of the parts, or in the case of wooden plates, it is better to leave the plastic coating layer on. As described above, since the present invention relies on frictional heat to perform fixing, the time required for fixing is affected by the materials of the plastic stud and workpiece, the pressure force used to press the stud against the workpiece, and the rotational speed of the stud. However, experimental results show that when both the workpiece and the stud are made of plastic, the rotation speed is approximately 9000 RPM,
Approximately 1 second at a pressure of approximately 13.5Kg/ cm2 , rotation speed approximately 4000RPM,
Fixation can be done in about 6 to 10 seconds at a pressure of about 34 kg/cm 2 . The present invention will be described below with reference to the drawings. Reference numeral 1 denotes a plastic stud, which integrally has a shaft portion 2 and a mounting base portion 3. The mounting base 3 is made of a disk formed at one end of the shaft, and in this embodiment, the mounting base is provided with a protrusion 3' at the center for positioning the workpiece. The shaft part 2 has a hollow cylindrical shape,
Around the cylindrical wall, locking claws 5 are provided at equal intervals, in this embodiment two inverted U-shaped notches 4 extending outward.
has been formed. This stud 1 is fixed to the back surface of a hard vinyl chloride bumper of a car as a workpiece, for example, but not limited to, by means of a mounting base 3, and the shaft is pushed into a hole on the front side of the car body, and then engaged. It is planned that the retaining claw 5 will be secured to the edge of the back side of the hole and attached to the body of the bumper. On the back surface of the mounting base 3, protrusions 6 having a predetermined cross-sectional area are protruded at one location or at multiple locations at equal intervals in the circumferential direction. To fix the shaft, insert the shaft 2 into the chuck 8 of the electric or pneumatically operated rotary tool 7, attach the drive protrusion 9 that is provided around the chuck and protrudes from the end face of the chuck, and that is driven to rotate. The stud is engaged in the rotational direction, and the rotation of the drive projection 9 follows the projection 6 to rotate the stud and press the mounting base 3 against the workpiece 10. Electric rotary tools have a maximum speed of about 4,000 RPM, but pneumatically operated tools can reach speeds of about 10,000 RPM. These tools are similar to portable drills or tabletop drilling machines, and the chuck only lightly frictionally holds the inserted shaft, and the rotational power is generated by the drive protrusion 9 protruding from the end of the chuck rotating around the chuck. The information is transmitted by following the protrusion 6 on the mounting base. In the case of a portable type, an operator manually presses the mounting base against the workpiece, similar to a conventional electric drill, and in the case of a drill press, the chuck is lowered by operating a control lever. In this case, if the protrusion 3' is provided at the center of the mounting base as in this embodiment, a recess 10' for receiving the protrusion 3' is provided in the workpiece 10 corresponding to the fixed position, and the protrusion 3' If the work is performed by engaging the recess 10' and the recess 10', the fixing position will not shift and can be fixed at an accurate position. Of course, this positioning is equally effective even if a recess is provided in the mounting base and a protrusion is provided in the workpiece. The tool also includes a stationary cylinder 1 surrounding the driving protrusion 9.
1, and a positioning device 12 consisting of a protrusion and a recess that engage with the end face of the stationary cylinder and the corresponding surface of the workpiece may be formed to position the tool with respect to the workpiece. Of course, either one of the positioning devices 3', 10' and 12 may be used, or both may be used in combination. Note that the driving protrusion 9 is connected to the inner circumference of the stationary cylinder 11,
It is fitted onto the outer periphery of the chuck 8 and is provided on the end face of a rotary cylinder 9' that is rotationally driven by power. While pressing the mounting base 3 of the stud with the shaft 2 inserted into the chuck 8 against the workpiece, the drive protrusion 9 chases the protrusion 6 on the back of the mounting base to rotate the stud at high speed. The surface facing the workpiece becomes molten and viscous, adding load to the rotational power of the tool. Then, the drive protrusion 9, which attempts to fuse the mounting base and the workpiece due to the viscosity and increases the load applied to the tool beyond a certain level, shears the protrusion 6 from the back surface of the mounting base, causing the tool to idle. In this way, the stud and the workpiece are fused together by the breakage of the protrusion 6, and it can be seen that the fixation is complete. The stud shown in the figure is molded from PBT resin (polybutylene terephthalate), and the shaft portion 2 has a diameter of approximately 5 mm and a length of approximately 6.5 mm, and the mounting base 3 has a diameter of approximately 15 mm and a thickness of approximately 1.3 mm.
mm, the protrusion 6 has a square cross-section of approximately 1.5 mm on a side, and a height of approximately 2 mm, along the outer periphery of the mounting base.
It was set up with a phase of 180°. This can be done using a tool.
When the stud was rotated at a speed of 3500 RPM and pressed against the workpiece with a force of about 35 kg/cm 2 , the protrusion 6 broke after about 6 to 7 seconds, and the mounting base of the stud was fixed to the workpiece. Similar studs can be used for plastics other than PBT,
Molded with ABS, PP, and nylon and used as a workpiece
The data is shown when fixed to two types of panels: ABS and PP. The tool used was a modified chuck of a portable electric drill, which was attached to the lifting platform 13 of the hand brace (Fig. 6), and the pressing force was applied to the workpiece at 34 kg/cm 2 and the rotation speed was approx.
This is the result of running at 3500RPM. In addition, the peel test is the result of tearing the fixed part while maintaining it at room temperature, and the peel test is the result of keeping the fixed part from room temperature to -40℃ for 2 hours, then keeping it at +80℃ for 2 hours, and then tearing it at room temperature (20℃). (°C) after being kept for 3 hours. In A, the shaft part is peeled off, including a part of the mounting base. In B, the shaft part is torn off from the mounting base at the base. In C, the mounting base has peeled off from the workpiece. It shows the average of three times each test.

【表】 上表の結果からワークがABSの場合、スタツ
ドはPP製以外、良好な固定強度を示し、ワーク
がPPの場合はPP製スタツドは安定した固定強度
を示す。そして、一般的にはワークとスタツドは
同材質のプラスチツクである方が固定強度は安定
することが判る。 以上、本発明を説明したが、スタツドの軸部２
はワークと取付けるべき他のワーク（前述の例で
は自動車のボデーパネル）や部品に応じて設計す
べきであると共に、工具のチヤツクの駆動突起で
追い回される取付基部の突起６は取付基部の外周
に設けてもよいのであつて、第７図に示すスタツ
ドはその一例である。 そして、ワークの固定面が凸の曲面である場合
は取付基部を可撓性にすると共に、この凸曲面に
ほゞ対応して凹状に彎曲させて置き、又、ワーク
の固定面が凹の曲面であるときは取付基部を可撓
性にして圧接にしより平らな取付基部をワークの
曲面になじませることにより曲面に対してもスタ
ツドを固定することができる（第５図Ｂ，Ｃ）。 更に、接着剤や粘着テープを用いて固定を行う
場合はワークや、スタツドの取付基部によごれが
あつたり、グリースなどのオイルが付着している
と固定強度を著しく低下するため拭くなどしてそ
れを完全に取除くことが必要で、手数がかゝる
が、本発明では圧接回転の際の遠心力でごみやオ
イルを吹き飛ばしてしまうため拭くなどの手数を
かけずに固定を行うことができると言う大きな特
長を有する。 こうして本発明によればスタツドを接着剤、粘
着テープ、超音波ウエルダなどでワークに固定し
ていた分野のすべてに適用できる簡便で、手数を
要さず迅速に固定を行える新規な固定方法を提供
することができる。 尚、スタツドの取付基部を固定するワークの厚
さが0.3mm以下であると摩擦による発熱の痕がワ
ークの裏面に生じるので、痕を裏面に生じさせな
いためにはワークの厚さを１mm以上にするとよ
い。 又、スタツドの取付基部のワークとの対向面に
は同心状の一重、或いは内外複数重の環状突起
や、或いは同心状にではなく全面に均一に分散さ
せて粒状突起１４を隆出し、摩擦熱でこれらの突
起１４を溶融してワークに融着させてもよく、こ
の場合は取付基部自体を溶融して融着するのに比
較し取付基部の厚さを一定に保て、他のワークな
いし部品にスタツドの軸部を正確に取付けること
ができると言う利点がある。 図示の実施例では回転工具の駆動突起９でスタ
ツドの突起６を追い回し、スタツドを回転させる
様になつている。しかし、これに限定されずスタ
ツドの軸部２を回転工具のチヤツク８に一体に回
転する様に咬えてスタツドを回転して装着を行
い、接着の完了をトルクリミツタで検出してチヤ
ツクを弛め、スタツドの軸部を回転工具から釈放
してもよい。[Table] From the results in the table above, when the work is made of ABS, studs other than those made of PP exhibit good fixing strength, and when the work is made of PP, studs made of PP exhibit stable fixing strength. In general, it is found that the fixing strength is more stable if the workpiece and the stud are made of the same plastic material. Although the present invention has been explained above, the shaft portion 2 of the stud
should be designed according to the workpiece and other workpieces (in the above example, the car body panel) and parts to be attached, and the protrusion 6 on the attachment base that is chased by the drive protrusion of the chuck of the tool should be designed around the outer periphery of the attachment base. The stud shown in FIG. 7 is one example. If the fixing surface of the workpiece is a convex curved surface, the mounting base should be made flexible and curved in a concave shape approximately corresponding to the convex curved surface, and the fixing surface of the workpiece should be a concave curved surface. In this case, the stud can be fixed even on a curved surface by making the mounting base flexible and press-fitting it so that the flatter mounting base conforms to the curved surface of the workpiece (FIGS. 5B and C). Furthermore, when fixing using adhesive or adhesive tape, if the workpiece or the mounting base of the stud is dirty or has oil such as grease on it, the fixing strength will be significantly reduced, so be sure to clean it by wiping it. It is necessary to completely remove the dust and oil, which is time-consuming, but in the present invention, the centrifugal force during pressure rotation blows away the dirt and oil, so fixing can be done without wiping or other trouble. It has this great feature. Thus, the present invention provides a new fixing method that is simple and can be applied to all fields in which studs are fixed to workpieces using adhesives, adhesive tapes, ultrasonic welders, etc., and can be fixed quickly and without any trouble. can do. Note that if the thickness of the workpiece to which the stud mounting base is fixed is less than 0.3 mm, heat generation marks due to friction will occur on the back side of the workpiece, so in order to prevent marks from forming on the back side, the thickness of the workpiece should be 1 mm or more. It's good to do that. In addition, on the surface of the mounting base of the stud facing the work, there are concentric single or multiple inner and outer annular protrusions, or granular protrusions 14 are protruded not concentrically but uniformly distributed over the entire surface to reduce frictional heat. These protrusions 14 may be melted and fused to the workpiece. In this case, compared to melting and fusing the mounting base itself, the thickness of the mounting base can be kept constant, and it can be attached to other workpieces or This has the advantage that the shank of the stud can be accurately attached to the part. In the illustrated embodiment, the driving protrusion 9 of the rotary tool follows the protrusion 6 of the stud to rotate the stud. However, the present invention is not limited to this, and the stud shaft 2 is attached to the chuck 8 of the rotary tool so that it rotates integrally with the chuck 8 of the rotary tool, the stud is rotated, and the completion of adhesion is detected by a torque limiter and the chuck is loosened. The shank of the stud may be released from the rotating tool.

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

図面は本発明の実施例を示すもので、第１図は
プラスチツクスタツドの一例の一部を断面にした
側面図、第２図は同上の正面図、第３図は回転工
具の斜視図、第４図は工具とプラスチツクスタツ
ドの関係説明図、第５図Ａ，Ｂ，Ｃは固定状態の
説明図、第６図は回転工具の他の一例の側面図、
第７図はプラスチツクスタツドの他の一例を示す
斜面図で、図中、１はプラスチツクスタツド、２
はその軸部、３は同取付基部、６は突起、７は回
転工具、８はそのチヤツク、９は同駆動突起、１
０はワークを示す。 The drawings show an embodiment of the present invention, and FIG. 1 is a partially sectional side view of an example of a plastic stud, FIG. 2 is a front view of the same, and FIG. 3 is a perspective view of a rotary tool. Fig. 4 is an explanatory diagram of the relationship between the tool and the plastic stud, Fig. 5 A, B, and C are explanatory diagrams of the fixed state, and Fig. 6 is a side view of another example of the rotary tool.
Figure 7 is a perspective view showing another example of a plastic stud, in which 1 is a plastic stud, 2 is a plastic stud, and 2 is a plastic stud.
3 is the shaft part, 3 is the mounting base, 6 is the protrusion, 7 is the rotary tool, 8 is the chuck, 9 is the drive protrusion, 1
0 indicates a workpiece.

Claims (1)

【特許請求の範囲】 １ 軸部と、該軸部の一端にワークに対する取付
基部を備え、該取付基部には裏面或いは外周から
突起が突出したプラスチツクスタツドを、前記軸
部で回転工具のチヤツクに回転可能に咬え、上記
チヤツクの回りで回転する駆動突起を前記取付基
部の突起に回転方向に係合し、 前記回転工具の駆動突起を回転して該駆動突起
で取付基部の突起を追い回すことにより前記プラ
スチツクスタツドに回転力を伝えると共に、その
スタツドの取付基部をワークに圧接し、 前記ワークとスタツドの取付基部の間に生じる
摩擦熱で少なくとも取付基部の一部を溶融して取
付基部をワークに融着し、 融着により取付基部の突起をチヤツクの駆動突
起で破断することを特徴とするプラスチツクスタ
ツドのワークに対する固定方法。[Scope of Claims] 1. A shaft part and a mounting base for mounting the workpiece at one end of the shaft part, and a plastic stud having a protrusion protruding from the back surface or outer periphery of the plastic stud is attached to the chuck of a rotary tool by the shaft part. A drive protrusion that is rotatably engaged and rotates around the chuck is rotationally engaged with the protrusion of the mounting base, and the drive protrusion of the rotary tool is rotated so that the drive protrusion chases the protrusion of the mounting base. transmits rotational force to the plastic stud, presses the mounting base of the stud against the workpiece, melts at least a part of the mounting base with frictional heat generated between the workpiece and the mounting base of the stud, and presses the mounting base against the workpiece. A method for fixing a plastic stud to a workpiece, characterized in that the protrusion on the mounting base is broken by the driving protrusion of the chuck by fusing.
JP58135712A 1983-07-27 1983-07-27 Fixing of plastic stud to work Granted JPS6027522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58135712A JPS6027522A (en) 1983-07-27 1983-07-27 Fixing of plastic stud to work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58135712A JPS6027522A (en) 1983-07-27 1983-07-27 Fixing of plastic stud to work

Publications (2)

Publication Number Publication Date
JPS6027522A JPS6027522A (en) 1985-02-12
JPH0311253B2 true JPH0311253B2 (en) 1991-02-15

Family

ID=15158114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58135712A Granted JPS6027522A (en) 1983-07-27 1983-07-27 Fixing of plastic stud to work

Country Status (1)

Country Link
JP (1) JPS6027522A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4636124A (en) * 1985-05-06 1987-01-13 Illinois Tool Works Inc. Adhesive friction weld fastener
JPH07108552B2 (en) * 1987-04-08 1995-11-22 株式会社ニフコ Rotary welding member

Also Published As

Publication number Publication date
JPS6027522A (en) 1985-02-12

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