JP2017047617A - Vibration welding method and vibration welding device - Google Patents
Vibration welding method and vibration welding device Download PDFInfo
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
- B29C65/0609—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 characterised by the movement of the parts to be joined
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
- B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
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- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
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- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
- B29C65/7879—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path
- B29C65/7882—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path said parts to be joined moving in a circular path
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- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
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- 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
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- 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
- B29C66/114—Single butt joints
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- 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
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- 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
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
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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
- 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
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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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
- 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
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9516—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools by controlling their vibration amplitude
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- 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
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- 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
- B29L2031/747—Lightning equipment
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Abstract
Description
本発明は、合成樹脂製ワーク間の当接部に振動を与えて溶着する振動溶着方法および振動溶着装置に係り、特に、車両用灯具の製作に有効な振動溶着方法および振動溶着装置に関する。 The present invention relates to a vibration welding method and a vibration welding apparatus that apply vibration to a contact portion between synthetic resin workpieces, and more particularly to a vibration welding method and a vibration welding apparatus that are effective in manufacturing a vehicular lamp.
熱可塑性樹脂製ワーク同士の当接部に振動を与え、振動に伴う摩擦熱で当接部を溶融接着する振動溶着方法が知られており、ランプボディと前面カバーとを溶着する場合等、車両用灯具業界では広く利用されている。 A vibration welding method is known in which vibration is applied to the abutting portions of thermoplastic resin workpieces, and the abutting portions are melted and bonded by frictional heat accompanying vibration, such as when the lamp body and the front cover are welded. Widely used in the lighting industry.
下記特許文献1には、振動溶着工程に先立って、一方のワーク(特に硬度の低い方のワーク)の接合面を予め加熱しておくことで、溶着部における粉バリや毛羽立ちバリの発生が抑制されて、灯具外観の見栄えが向上する、という方法が提案されている。
In
詳しくは、振動溶着工程では、図5(b)に示すように、灯具ボディaのフランジ部a1に灯具カバーbの脚b1を当接し、灯具カバーbを介して、フランジ部a1・脚b1間の当接部に振動を与え、該当接部が摩擦熱で溶融し接着される。フランジ部a1は、溶着工程に先立つ予備加熱工程(図5(a)参照)において、ヒータcにより予め加熱されて軟化しているため、図5(b)に示す振動溶着の際、溶融温度に達するまでの時間が短く、それだけ粉バリa2や糸バリ(毛羽立ちバリともいう)a3の発生が少ない。 Specifically, in the vibration welding process, as shown in FIG. 5B, the leg b1 of the lamp cover b is brought into contact with the flange part a1 of the lamp body a, and the flange part a1 and the leg b1 are interposed via the lamp cover b. The contact portion is vibrated, and the corresponding contact portion is melted and adhered by frictional heat. Since the flange portion a1 is preheated and softened by the heater c in the preheating step (see FIG. 5A) prior to the welding step, the flange portion a1 is melted at the time of vibration welding shown in FIG. 5B. The time to reach is short, and the generation of powder burr a2 and yarn burr (also called fluff burr) a3 is small.
しかし、前記特許文献1に記載の方法を実施するには、従来では、図6に示すように、上下方向に対向配置された灯具ボディ搭載用の受治具dと灯具カバー保持用の保持具eとを備えた、振動溶着工程を行う溶着ステージに、加熱用ヒータcを出し入れすることで、予備加熱工程も行っていたため、サイクルタイムが長くなるという問題があった。
However, in order to carry out the method described in
詳しくは、まず、図6(a),(b)に示すように、溶着ステージにおいて、受治具d,保持具eを上下に大きく離間させ、灯具ボディa,灯具カバーbを受治具d,保持具eにそれぞれ搭載,保持し、灯具ボディaと灯具カバーb間に加熱用ヒータcを搬入する。そして、図6(c)に示すように、受治具dに搭載した灯具ボディaのフランジ部a1と、保持具eに保持した灯具カバーbの脚b1とを加熱する予備加熱工程を行う。次いで、受治具dと保持具e間を広げて、同ステージから加熱用ヒータcを搬出し、図6(d)に示すように、受治具dと保持具eを接近させて、灯具ボディaのフランジ部a1に灯具カバーbの脚部b1を圧接し、灯具カバーbを介して当接部に振動を与えて該当接部を溶着する振動溶着工程を行う。最後に、図6(e)に示すように、受治具dと保持具e間を広げて、溶着ステージから製品を取り出し、(a)〜(e)の作業を繰り返す。 Specifically, first, as shown in FIGS. 6A and 6B, in the welding stage, the receiving jig d and the holder e are largely separated in the vertical direction, and the lamp body a and the lamp cover b are received by the receiving jig d. The heater c is mounted and held on the holder e, and the heater c is carried between the lamp body a and the lamp cover b. Then, as shown in FIG. 6C, a preheating step of heating the flange portion a1 of the lamp body a mounted on the receiving jig d and the leg b1 of the lamp cover b held by the holder e is performed. Next, the space between the receiving jig d and the holder e is widened, the heater c for heating is carried out from the stage, and the receiving jig d and the holder e are brought close to each other as shown in FIG. A vibration welding process is performed in which the leg part b1 of the lamp cover b is pressed against the flange part a1 of the body a, and the contact part is vibrated through the lamp cover b to weld the corresponding part. Finally, as shown in FIG. 6E, the space between the receiving jig d and the holder e is widened, the product is taken out from the welding stage, and the operations (a) to (e) are repeated.
このように、振動溶着工程を行う溶着ステージにおいて、予備加熱工程と振動溶着工程の双方を行うため、灯具ボディaと灯具カバーbを溶着するサイクルタイムがどうしても長くなる。 Thus, in the welding stage for performing the vibration welding process, since both the preheating process and the vibration welding process are performed, the cycle time for welding the lamp body a and the lamp cover b is inevitably long.
本発明は、前記した従来技術の問題点に鑑みてなされたもので、その目的は、サイクルタイムを短縮できる振動溶着方法および装置を提供することである。 The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a vibration welding method and apparatus capable of shortening the cycle time.
前記目的を達成するために、本発明に係る振動溶着方法においては、
加熱手段であるヒータを備えた加熱処理ステージと、ワーク保持具を備えた溶着処理ステージとを隣接して設け、
ワーク搬送機構を構成する受治具に搭載して前記加熱処理ステージに搬送した第1のワークを前記ヒータにより加熱する予備加熱工程と、加熱処理した前記第1のワークを前記受治具に搭載して前記溶着処理ステージに搬送し、前記ワーク保持具に保持した第2のワークに当接し、前記第2のワークを介して第1,第2のワーク間当接部に振動を与えて該当接部を振動溶着する溶着工程と、を備えた振動溶着方法であって、
前記受治具を一対使用し、前記両ステージ間で前記受治具を連係して移動し、前記予備加熱工程と前記溶着工程を同時に行うことを特徴とする。
In order to achieve the above object, in the vibration welding method according to the present invention,
A heat treatment stage equipped with a heater as a heating means and a welding treatment stage equipped with a work holder are provided adjacent to each other,
A preheating step of heating the first workpiece, which is mounted on a receiving jig constituting the workpiece transfer mechanism and transferred to the heat treatment stage, by the heater, and the first workpiece subjected to the heat processing is mounted on the receiving jig. Then, it is conveyed to the welding processing stage, abuts on the second workpiece held by the workpiece holder, and a vibration is applied to the abutting portion between the first and second workpieces via the second workpiece. A vibration welding method comprising: a welding step of vibration welding the contact portion,
A pair of the receiving jigs is used, the receiving jigs are linked and moved between the two stages, and the preheating step and the welding step are performed simultaneously.
なお、本発明に係る振動溶着方法では、前記溶着工程の中で、前記溶着処理ステージにある前記受治具から製品を取り出すとともに、新たな第1,第2のワークを前記受治具,前記ワーク保持具にそれぞれ搭載,保持することが望ましい。 In the vibration welding method according to the present invention, in the welding process, a product is taken out from the receiving jig in the welding processing stage, and new first and second workpieces are received in the receiving jig, It is desirable to mount and hold each work holder.
また、前記目的を達成するために、本発明に係る振動溶着装置においては、
加熱手段であるヒータを備え、ワーク搬送機構を構成する受治具に搭載されて搬送されてきた第1のワークを加熱する加熱処理ステージと、
第2のワークを保持するワーク保持具を備え、前記受治具に搭載されて搬送されてきた加熱処理済みの前記第1のワークと、前記ワーク保持具に保持した第2のワークを当接し、前記第2のワークを介して第1,第2のワーク間当接部に振動を与えて該当接部を振動溶着する溶着処理ステージと、が隣接して設けられた振動溶着装置であって、
前記受治具が一対設けられるとともに、前記両ステージ間で前記受治具が連係して移動し、前記予備加熱工程と前記溶着工程が同時に行われるように構成されたことを特徴とする。
(作用)ワーク搬送機構を構成する受治具に搭載されて溶着処理ステージに搬送された第1のワークは、前工程である予備加熱工程(加熱処理ステージ)において加熱されて軟化している分、振動溶着工程では、それだけ短時間で溶融温度に達し、第1のワークを予備加熱しない場合に比べて、第1,第2のワーク間当接部を振動溶着する際に粉バリや糸バリの発生が少ない。
In order to achieve the above object, in the vibration welding apparatus according to the present invention,
A heating processing stage for heating a first workpiece that has been transported by being mounted on a receiving jig that constitutes a workpiece transport mechanism, including a heater that is a heating means;
A work holding tool for holding a second work is provided, and the first work that has been heated and mounted on the receiving jig and conveyed is brought into contact with the second work held by the work holding tool. A vibration welding apparatus provided adjacent to a welding processing stage that vibrates the first and second workpiece contact portions via the second workpiece and vibrates the corresponding contact portions. ,
A pair of the receiving jigs are provided, and the receiving jigs move in cooperation between the two stages so that the preheating step and the welding step are performed simultaneously.
(Operation) The first workpiece mounted on the receiving jig constituting the workpiece conveyance mechanism and conveyed to the welding processing stage is heated and softened in the preliminary heating step (heating treatment stage) which is the previous step. In the vibration welding process, when reaching the melting temperature in such a short time and the first workpiece is not pre-heated, the powder and yarn burrs are generated when the first and second workpiece contact portions are vibration welded. There is little occurrence of.
また、溶着処理ステージにおいて、ワーク保持具に保持した第2のワークを介して、第1,第2のワーク間当接部に振動を与えて該当接部を振動溶着する工程中に、加熱処理ステージでは、受治具に搭載されている第1のワークに対し加熱手段であるヒータが接近して、第1のワークに対する予備加熱工程を行う。 Further, in the welding process stage, the heat treatment is performed during the process of applying vibration to the contact portion between the first and second workpieces and vibrating and welding the corresponding contact portion via the second workpiece held by the workpiece holder. On the stage, a heater as heating means approaches the first work mounted on the receiving jig, and a preheating process for the first work is performed.
そして、溶着処理ステージにおいて、第1,第2のワーク間当接部が溶着された製品が受治具から取り出されて、新たな第1,第2のワークが受治具,保持具にそれぞれ搭載,保持されると、新たな第1のワークを搭載した受治具が溶着処理ステージから加熱処理ステージに移動するが、この間、加熱処理ステージでは、加熱処理された第1のワークからヒータが離間し、加熱処理された第1のワークを搭載した受治具が加熱処理ステージから溶着処理ステージに移動する。即ち、加熱処理された第1のワークを搭載した受治具の加熱処理ステージから溶着処理ステージへの移動と、新たな第1のワークを搭載した受治具の溶着処理ステージから加熱処理ステージへの移動が同時に行われる。 Then, in the welding process stage, the product in which the first and second workpiece contact portions are welded is taken out from the receiving jig, and new first and second workpieces are respectively placed on the receiving jig and the holding tool. When mounted and held, the receiving jig on which a new first workpiece is mounted moves from the welding processing stage to the heat processing stage. During this time, in the heat processing stage, the heater is moved from the heat-treated first work. The receiving jig on which the first workpiece that is separated and heat-treated is mounted moves from the heat treatment stage to the welding treatment stage. That is, the movement of the receiving jig carrying the heat-treated first workpiece from the heat treatment stage to the welding treatment stage, and the welding jig mounting the new first workpiece from the welding treatment stage to the heat treatment stage. Are moved simultaneously.
また、第1,第2のワークを溶着一体化した製品1個を製造するためのサイクルタイムは、従来の方法では、溶着処理ステージへの第1,第2のワークの搬入,ステージからの製品の搬出などの主に手作業で行う時間に、ステージのドアの開閉に要す時間、加熱処理工程(ヒータによる加熱処理、ヒータの往復移動など)に要す時間および振動溶着工程(受治具の昇降、振動・保圧)に要す時間が加算された、例えば、40秒であった。 In addition, the cycle time for manufacturing one product in which the first and second workpieces are welded and integrated is as follows. In the conventional method, the first and second workpieces are brought into the welding processing stage, and the product from the stage. The time required to open and close the stage door, the time required for the heat treatment process (heat treatment by the heater, the reciprocating movement of the heater, etc.) and the vibration welding process (receiving jig) The time required for elevating, vibrating and holding pressure) was added, for example, 40 seconds.
一方、本願発明に係る方法および装置では、加熱処理ステージと溶着処理ステージ間で、ワーク搬送機構を構成する一対の受治具を連係して移動し、予備加熱工程と振動溶着工程とを同時に行うので、サイクルタイムは、これら両工程のうちの時間の長い方の工程(予備加熱工程)に要す時間、溶着処理ステージへの第1,第2のワークの搬入,溶着処理ステージからの製品の搬出などの主に手作業で行う時間、およびステージのドアの開閉に要す時間に、ステージ間での第1のワークの搬送(受治具の移動)に要す時間が加算された時間となる。しかし、ステージ間での第1のワークの搬送(受治具の移動)に要す時間は、僅かで、さらに、溶着処理ステージへの第1,第2のワークの搬入,溶着処理ステージからの製品の搬出などの手作業を、実質的に短い振動溶着工程の中で行うようにすることで、従来の方法では40秒というサイクルタイムが、例えば、10秒も短縮された30秒となる。 On the other hand, in the method and apparatus according to the present invention, the pair of receiving jigs constituting the workpiece transfer mechanism are moved in cooperation between the heat treatment stage and the welding treatment stage, and the preheating step and the vibration welding step are performed simultaneously. Therefore, the cycle time is the time required for the longer one of these two steps (preheating step), the first and second workpieces are carried into the welding processing stage, and the product from the welding processing stage. Time that is mainly manually carried out, such as unloading, and time required to open and close the door of the stage, plus time required to transport the first workpiece (movement of the receiving jig) between the stages, Become. However, the time required for the conveyance of the first workpiece between the stages (movement of the receiving jig) is very short, and further, the first and second workpieces are carried into the welding processing stage, and from the welding processing stage. By performing manual operations such as unloading of the product in a substantially short vibration welding process, the cycle time of 40 seconds in the conventional method is reduced to 10 seconds, for example, 30 seconds.
また、本発明に係る振動溶着装置においては、請求項4に記載のように、
前記溶着処理ステージと前記加熱処理ステージは、上下方向に所定距離離間して対向配置されるとともに、
前記両ステージ間には、該両ステージ間を通る水平回転軸に対し背中合わせに前記一対の受治具を固定一体化して、該水平回転軸周りに縦回転可能な、前記ワーク搬送機構を構成する治具ユニットが配置され、
前記治具ユニットは、各受治具が両ステージとそれぞれ正対するように前記水平回転軸周りに180度毎に間歇回転して、前記加熱処理ステージにおいて予備加熱された第1のワークを前記溶着処理ステージに、前記溶着処理ステージにおいて新たに搭載された第1のワークを前記加熱処理ステージに、それぞれ同時に搬送されるように構成することができる。
(作用)ワーク搬送機構は、上下方向に所定距離離間した溶着処理ステージと加熱処理ステージ間において、一対の受治具を背中合わせに一体化した治具ユニットが水平回転軸周りに縦方向に180度毎に間歇回転するというコンパクトな構造で、振動溶着装置の水平方向の設置スペースが小さくて済み、しかも治具ユニットの回転半径が小さいので、短時間で第1のワークをそれぞれ所定のステージに搬送することができる。
Further, in the vibration welding apparatus according to the present invention, as described in
The welding process stage and the heat treatment stage are arranged to face each other with a predetermined distance apart in the vertical direction,
Between the two stages, the pair of receiving jigs are fixed and integrated back to back with respect to a horizontal rotation axis passing between the two stages, and the work transport mechanism is configured to be vertically rotatable around the horizontal rotation axis. Jig unit is arranged,
The jig unit rotates the first workpiece preliminarily heated on the heat treatment stage by rotating intermittently about the horizontal rotation axis every 180 degrees so that each receiving jig faces the both stages. The first workpiece newly mounted on the processing stage in the processing stage can be configured to be simultaneously transferred to the heat processing stage.
(Operation) The workpiece transfer mechanism is configured such that a jig unit in which a pair of receiving jigs are integrated back to back is 180 degrees vertically around a horizontal rotation axis between a welding process stage and a heat treatment stage separated by a predetermined distance in the vertical direction. With a compact structure that rotates intermittently every time, the installation space in the horizontal direction of the vibration welding device is small, and the rotation radius of the jig unit is small, so the first workpiece can be transported to the specified stage in a short time. can do.
また、本発明に係る振動溶着装置においては、請求項5に記載のように、
前記溶着処理ステージと前記加熱処理ステージは、左右方向に所定距離離間して対向配置されるとともに、
前記両ステージ間の下方には、該両ステージ間を通る鉛直回転軸を挟んで左右方向水平に前記一対の受治具をそれぞれのワーク搭載面が上を向くように固定一体化して、該鉛直回転軸周りに横回転可能な、前記ワーク搬送機構を構成する治具ユニットが配置され、
前記治具ユニットは、各受治具が両ステージとそれぞれ正対するように前記鉛直回転軸周りに180度毎に間歇回転して、前記加熱処理ステージにおいて予備加熱された第1のワークを前記溶着処理ステージに、前記溶着処理ステージにおいて新たに搭載された第1のワークを前記加熱処理ステージに、それぞれ同時に搬送されるように構成することができる。
(作用)ワーク搬送機構は、左右方向に所定距離離間した溶着処理ステージと加熱処理ステージ間の下方において、両ステージ間を通る鉛直回転軸を挟んで一対の受治具を左右方向水平に一体化した治具ユニットが該鉛直回転軸周りに180度毎に間歇回転するという構造で、請求項4に比べて、治具ユニットの回転半径が大きいが、振動溶着装置の縦方向の設置スペースがコンパクトとなる。
Further, in the vibration welding apparatus according to the present invention, as described in
The welding treatment stage and the heat treatment stage are arranged to face each other with a predetermined distance in the left-right direction,
Below the two stages, the pair of receiving jigs are fixed and integrated horizontally with the vertical rotation axis passing between the two stages sandwiched between the two stages so that the respective work mounting surfaces face upward. A jig unit that constitutes the workpiece transfer mechanism, which can be rotated horizontally around the rotation axis, is arranged,
The jig unit rotates the first workpiece preliminarily heated on the heat treatment stage by rotating intermittently about the vertical rotation axis every 180 degrees so that each receiving jig faces the both stages. The first workpiece newly mounted on the processing stage in the processing stage can be configured to be simultaneously transferred to the heat processing stage.
(Operation) The workpiece transfer mechanism integrates a pair of receiving jigs horizontally in the left-right direction with a vertical rotation axis passing between both stages below the welding process stage and the heat treatment stage separated by a predetermined distance in the left-right direction. The jig unit rotates intermittently about the vertical rotation axis every 180 degrees. Compared to claim 4, the jig unit has a larger rotation radius, but the installation space in the vertical direction of the vibration welding apparatus is compact. It becomes.
以上の説明から明らかなように、本発明に係る振動溶着方法および振動溶着装置によれば、サイクルタイムを大幅に短縮でき、第1,第2のワークを溶着一体化した製品を量産する上で最適である。 As is clear from the above description, according to the vibration welding method and vibration welding apparatus according to the present invention, the cycle time can be greatly shortened, and the product in which the first and second workpieces are welded and integrated is mass-produced. Is optimal.
請求項4によれば、振動溶着装置の水平方向の設置スペースが小さくて済み、しかもサイクルタイムを確実に短縮することができる。 According to the fourth aspect, the installation space in the horizontal direction of the vibration welding apparatus can be small, and the cycle time can be surely shortened.
請求項5によれば、請求項4に比べて、振動溶着装置の縦方向の設置スペースが小さくて済む。 According to the fifth aspect, compared with the fourth aspect, the installation space in the vertical direction of the vibration welding apparatus can be reduced.
以下、図面を用いて、本願発明の実施の形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図1は、本発明の第1の実施形態に係る振動溶着装置10を示し、同装置10は、自動車用灯具構成部品であるABS系の樹脂製灯具ボディ2と、アクリル樹脂製前面レンズ4とを振動溶着するための装置である。
FIG. 1 shows a
振動溶着装置10は、電磁振動を利用してワーク間の溶着予定部位に摩擦熱を発生させ、この摩擦熱により溶着予定部位の材料を溶融し、接合一体化するもので、第1のワークである灯具ボディ2を搭載するボディ受治具22と、第2のワークである前面レンズ4を保持するレンズ保持具14と、レンズ保持具14を電磁振動させる振動発生装置12で主として構成されている。符号22aは、ワーク載置面を示す。
The
振動発生装置12は、支持体15下面に弾性体16を介して振動体17が左右方向に可動自在に懸吊され、支持体15の左右両側に電磁石18が対向配置され、振動体17の下部にレンズ保持具14が固定される。そして左右の電磁石18に交互に電流を流すことにより、振動体17を左右方向に交互に吸着して電磁振動(例えば、周波数240Hz)を発生させ、レンズ保持具14を振動体17とともに振動させる。そして、図2に示すように、レンズ保持具14に保持された前面レンズ4を介して、前面レンズ4のシール脚5と灯具ボディ2のフランジ部3間の当接部(圧接部)に振動が作用し、該当接部が摩擦熱で溶融し接着される。
In the
振動溶着装置10には、灯具ボディ2を加熱する下方の加熱処理ステージS1と、灯具ボディ2に前面レンズ4を振動溶着する上方の溶着処理ステージS2とが隣接して設けられている。
The
加熱処理ステージS1には、油圧シリンダなどの昇降機構30によって、昇降自在な加熱手段であるヒータ32が設けられ、ステージS1では、後述するワーク搬送機構20を構成するボディ受治具22に搭載されて搬送されてきた灯具ボディ2を加熱する予備加熱工程を行う。一方、溶着処理ステージS2には、前面レンズ4を保持できるレンズ保持具14が設けられ、ステージS2では、加熱処理ステージS1で予備加熱された後、受治具22に搭載されて搬送されてきた灯具ボディ2を、レンズ保持具14に保持した前面レンズ4に上下方向に圧接した形態に保持し、前面レンズ4を介して両者4,2間の圧接部に振動を与えて該圧接部を振動溶着する、振動溶着工程を行う。
The heat treatment stage S1 is provided with a
受治具22に搭載されて溶着処理ステージS2に搬送されてきた灯具ボディ2のフランジ部3の表面は、加熱処理ステージS1において加熱されて軟化している分、振動溶着工程では、フランジ部3とシール脚5間当接部(圧接部)がそれだけ短時間で溶融温度に達し、予備加熱しない振動溶着方法と比べて、粉バリ7や糸バリ8の発生が少ない。
Since the surface of the
また、上下方向に所定距離離間して対向配置された溶着処理ステージS2,加熱処理ステージS1間には、両ステージS1,S2間を通って水平方向に配設された水平回転軸Lxに対し、背中合わせに一対のボディ受治具22が固定一体化されて、該水平回転軸Lx周りに縦回転可能な治具ユニットUで構成されたワーク搬送機構20が配置されている。
In addition, between the welding processing stage S2 and the heating processing stage S1 arranged to face each other at a predetermined distance in the vertical direction, with respect to the horizontal rotation axis Lx arranged in the horizontal direction through both stages S1 and S2, A pair of
ワーク搬送機構20(治具ユニットU)は、油圧シリンダなどの昇降機構26によって上下方向に移動自在に構成されており、溶着処理ステージS2において、ボディ受治具22に搭載された灯具ボディ2をレンズ保持具14に保持された前面レンズ4に圧接する形態に保持するために、該昇降機構26が使用される。
The workpiece transfer mechanism 20 (jig unit U) is configured to be movable up and down by an elevating
ワーク搬送機構20は、各受治具22,22が連係して両ステージS1,S2とそれぞれ同時に正対するように、治具ユニットUを水平回転軸Lx周りに180度毎に間歇回転して、加熱処理ステージS1において予備加熱された灯具ボディ2を溶着処理ステージS2に、溶着処理ステージS2において新たに搭載された灯具ボディ2を加熱処理ステージS1に、連係して同時に搬送する。
The
したがって、加熱処理ステージS1における灯具ボディ2の予備加熱工程と、溶着処理ステージS2における灯具ボディ2・前面レンズ4間の振動溶着工程とを同時に遂行できるとともに、装置10の設置スペースを節約できる。
Therefore, the preliminary heating process of the
また、灯具ボディ2のフランジ部3と前面レンズ4のシール脚5間の当接部(圧接部)には、振動発生装置12で発生した電磁振動(例えば、周波数240Hz)が伝達され、溶着面に発生する摩擦熱によって該当接部が溶着される。当接部に伝達される振動は、その振幅が大きいほど、溶着面に発生する摩擦熱が大きく溶着面温度の上昇率が大きいため、短時間で溶着できることから、ある程度振幅は大きい方がよい。しかし、振幅が大き過ぎると、前面レンズ4のシール脚5が軟化温度に達する前に灯具ボディ2のフランジ部3側が削れて糸バリが発生する。そこで、当初は、フランジ部3側が削れないように小さな振幅で振動させ、シール脚5側が軟化した段階で、大きな振幅で振動させることが最も望ましい。そして、最初は振幅0.5mmの振動を作用させ、その後、振幅1.2mmの振動を作用させることで、糸バリ8を全く発生させることなく灯具ボディ2と前面レンズ4を溶着することができた。
Further, electromagnetic vibration (for example, frequency 240 Hz) generated by the
次に、図3を参照して、灯具ボディ2と前面レンズ5を振動溶着する工程を説明する。
Next, with reference to FIG. 3, the process of vibration welding the
まず、図3(a)に示すように、溶着処理ステージS2では、作業者が、上下に大きく離間する受治具22A,レンズ保持具14に対し、灯具ボディ2,前面レンズ4をそれぞれ搭載,保持する。一方、加熱処理ステージS1では、受治具22Bに搭載された灯具ボディ2にヒータ32が接近した形態に保持されており、灯具ボディ2のフランジ部4表面を加熱する予備加熱工程が行われる。
First, as shown in FIG. 3 (a), in the welding processing stage S2, the operator mounts the
次に、図3(b)に示すように、溶着処理ステージS2では、ドア28を閉め、ワーク搬送機構20を駆動(治具ユニットUを180度回転)し、溶着ステージS2において受治具22Aに搭載した灯具ボディ2を、加熱処理ステージS1に搬送する。一方、予備加熱ステージS1では、灯具ボディ2からヒータ32が離間することで、加熱処理工程が終了し、ワーク搬送機構20を駆動(治具ユニットUを180度回転)し、予備加熱した灯具ボディ2を受治具22Bとともに溶着ステージS2に搬送する。
Next, as shown in FIG. 3B, in the welding process stage S2, the
次に、図3(c)に示すように、溶着処理ステージS2では、ワーク搬送機構20(治具ユニットU)全体が上昇して、灯具ボディ2と前面レンズ4が当接(圧接)した形態に保持されるとともに、振動発生装置12が駆動し、前面レンズ4と灯具ボディ2間の当接部(圧接部)に振動が伝達されて、灯具ボディ2と前面レンズ4間の当接部が溶融・接着される。一方、加熱処理ステージS1では、ヒータ32が上昇し灯具ボディ2に接近した形態に保持されて、灯具ボディ2を加熱する予備加熱工程が開始される。
Next, as shown in FIG. 3C, in the welding processing stage S2, the entire work transport mechanism 20 (the jig unit U) is raised, and the
次に、図3(d)に示すように、溶着処理ステージS2では、ドア28が開き、ワーク搬送機構20(治具ユニットU)全体が元の位置に下降して、受治具22Bに搭載されている製品である灯具の上方が開放され、作業者は、受治具22Bから製品である灯具を取り出す。一方、加熱処理ステージS1では、ヒータ32が灯具ボディ2に接近した形態に保持されており、受治具22Aに搭載した灯具ボディ2を加熱する予備加熱工程が継続している。
Next, as shown in FIG. 3D, in the welding process stage S2, the
そして、治具ユニットUは、受治具22B,22Aを溶着処理ステージS1,加熱処理ステージS1にそれぞれ向けた形態のまま、図3(a)に示す形態に移行し、作業者は、受治具22B,レンズ保持具14に対し、新たな灯具ボディ2,前面レンズ4をそれぞれ搭載,保持する。このように、図3(a)→(b)→(c)→(d)→に示す振動溶着工程が繰り返される。
Then, the jig unit U shifts to the form shown in FIG. 3A while the receiving
図4は、本発明の第2の実施形態に係る振動溶着装置を示す。 FIG. 4 shows a vibration welding apparatus according to the second embodiment of the present invention.
この第2の実施形態に係る振動溶着装置10Aは、ヒータ32を備えた加熱処理ステージS1と、前面レンズ4を保持するレンズ保持具14を備えた溶着処理ステージS2とが左右に隣接するように対向配置されるとともに、両ステージS1,S2間の下方には、該両ステージS1,S2間を通って鉛直方向に配設された鉛直回転軸Lyを挟んで、左右方向水平に一対の受治具22,22がそれぞれのワーク搭載面22a,22aを上に向けて固定一体化されて、鉛直回転軸Ly周りに横回転可能な、ワーク搬送機構20Aを構成する治具ユニットU1が配置されている。
In the
治具ユニットU1は、各受治具22,22が両ステージS1,S2とそれぞれ正対するように鉛直回転軸Ly周りに180度毎に間歇回転して、加熱処理ステージS1において予備加熱された灯具ボディ2を溶着処理ステージS2に、溶着処理ステージS2において溶着一体化された製品である灯具を取り出して新たに搭載した前面レンズ4を加熱処理ステージS1に、それぞれ同時に搬送するように構成されている。なお、治具ユニットU1は、油圧シリンダなどの昇降機構26によって上下方向に移動自在に構成されている。
The jig unit U1 is a lamp that is preheated in the heat treatment stage S1 by rotating intermittently about the vertical rotation axis Ly every 180 degrees so that the receiving
その他の構成は、前記した第1の実施形態に係る振動溶着装置10と同一であるので、その重複する説明は省略する。
The other configuration is the same as that of the
ワーク搬送機構20Aは、左右方向に所定距離離間した溶着処理ステージS1と加熱処理ステージS2間の下方において、両ステージS1,S2間を通る鉛直回転軸Lyを挟んで一対の受治具22,22を左右方向水平に一体化した治具ユニットU1が鉛直回転軸Ly周りに横方向に180度毎に間歇回転するという構造で、第1の実施形態に係る振動溶着装置10に比べて、治具ユニットU1の回転半径が大きく、装置10Aの水平方向の設置スペースが必要であるが、治具ユニットU1の鉛直回転軸Ly周りの回転負荷が周方向において一定である分、灯具ボディ2をそれぞれ所定のステージS1,S2にスムーズに搬送することができる。
The
2 第1のワークである灯具ボディ
3 灯具ボディのフランジ部
4 第2のワークである前面レンズ
5 前面レンズのシール脚
10,10A 振動溶着装置
12 振動発生装置
14 レンズ保持具
20,20A ワーク搬送機構
22 ボディ受治具
32 加熱手段であるヒータ
S1 加熱処理ステージ
S2 溶着処理ステージ
U,U1 治具ユニット
Lx 水平回転軸
Ly 鉛直回転軸
2
Claims (5)
ワーク搬送機構を構成するワーク受治具に搭載して前記加熱処理ステージに搬送した第1のワークを前記ヒータにより加熱する予備加熱工程と、加熱処理した前記第1のワークを前記受治具に搭載して前記溶着処理ステージに搬送して、前記保持具に保持した第2のワークと当接し、該第2のワークを介して第1,第2のワーク間当接部に振動を与えて該当接部を振動溶着する溶着工程と、を備えた振動溶着方法であって、
前記受治具を一対使用し、前記両ステージ間で前記受治具を連係して移動し、前記予備加熱工程と前記溶着工程を同時に行うことを特徴とする振動溶着方法。 A heat treatment stage equipped with a heater as a heating means and a welding treatment stage equipped with a work holder are provided adjacent to each other,
A preheating step of heating the first workpiece that is mounted on a workpiece receiving jig constituting the workpiece conveying mechanism and conveyed to the heat treatment stage by the heater, and the first workpiece subjected to the heat treatment is used as the receiving jig. Mounted, conveyed to the welding processing stage, brought into contact with the second workpiece held by the holder, and applied to the first and second workpiece contact portions via the second workpiece. A vibration welding method comprising: a welding step of vibration welding the contact portion;
A vibration welding method, wherein a pair of the receiving jigs are used, the receiving jigs are linked and moved between the two stages, and the preliminary heating step and the welding step are performed simultaneously.
前記受治具が一対設けられるとともに、前記両ステージ間で前記受治具が連係して移動し、前記予備加熱工程と前記溶着工程が同時に行われるように構成されたことを特徴とする振動溶着装置。 A heater that is a heating means, a heat treatment stage that heats the first work that has been mounted on a receiving jig that constitutes the work transfer mechanism, and a work holder that holds the second work, The first workpiece that has been heated and mounted on the receiving jig is brought into contact with the second workpiece held by the workpiece holder, and the first and second workpieces are brought into contact with each other via the second workpiece. A vibration welding apparatus provided adjacent to a welding processing stage that vibrates and welds the corresponding contact portion by applying vibration to the contact portion between the workpieces,
A vibration welding characterized in that a pair of the receiving jigs are provided, and the receiving jigs move in cooperation between the two stages so that the preheating step and the welding step are performed simultaneously. apparatus.
前記両ステージ間には、該両ステージ間を通る水平回転軸に対し背中合わせに前記一対の受治具を固定一体化して、該水平回転軸周りに縦回転可能な、前記ワーク搬送機構を構成する治具ユニットが配置され、
前記治具ユニットは、各受治具が両ステージとそれぞれ正対するように前記水平回転軸周りに180度毎に間歇回転して、前記加熱処理ステージにおいて予備加熱された第1のワークを前記溶着処理ステージに、前記溶着処理ステージにおいて新たに搭載された第1のワークを前記加熱処理ステージに、それぞれ同時に搬送することを特徴とする請求項3に記載の振動溶着装置。 The welding process stage and the heat treatment stage are arranged to face each other with a predetermined distance apart in the vertical direction,
Between the two stages, the pair of receiving jigs are fixed and integrated back to back with respect to a horizontal rotation axis passing between the two stages, and the work transport mechanism is configured to be vertically rotatable around the horizontal rotation axis. Jig unit is arranged,
The jig unit rotates the first workpiece preliminarily heated on the heat treatment stage by rotating intermittently about the horizontal rotation axis every 180 degrees so that each receiving jig faces the both stages. The vibration welding apparatus according to claim 3, wherein the first workpiece newly mounted on the processing stage is simultaneously transferred to the heat processing stage.
前記両ステージ間の下方には、該両ステージ間を通る鉛直回転軸を挟んで左右方向水平に前記一対の受治具をそれぞれのワーク搭載面が上を向くように固定一体化して、該鉛直回転軸周りに横回転可能な、前記ワーク搬送機構を構成する治具ユニットが配置され、
前記治具ユニットは、各受治具が両ステージとそれぞれ正対するように前記鉛直回転軸周りに180度毎に間歇回転して、前記加熱処理ステージにおいて予備加熱された第1のワークを前記溶着処理ステージに、前記溶着処理ステージにおいて新たに搭載された第1のワークを前記加熱処理ステージに、それぞれ同時に搬送することを特徴とする請求項3に記載の振動溶着装置。 The welding treatment stage and the heat treatment stage are arranged to face each other with a predetermined distance in the left-right direction,
Below the two stages, the pair of receiving jigs are fixed and integrated horizontally with the vertical rotation axis passing between the two stages sandwiched between the two stages so that the respective work mounting surfaces face upward. A jig unit that constitutes the workpiece transfer mechanism, which can be rotated horizontally around the rotation axis, is arranged,
The jig unit rotates the first workpiece preliminarily heated on the heat treatment stage by rotating intermittently about the vertical rotation axis every 180 degrees so that each receiving jig faces the both stages. The vibration welding apparatus according to claim 3, wherein the first workpiece newly mounted on the processing stage is simultaneously transferred to the heat processing stage.
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EP4197748A1 (en) * | 2021-12-16 | 2023-06-21 | Branson Ultraschall Niederlassung der Emerson Technologies GmbH & Co. oHG | Welding method and respective welding device |
EP4000906A4 (en) * | 2019-07-17 | 2023-08-02 | Sumitomo Chemical Company, Limited | Method for manufacturing welded molding, welded molding, and pipe |
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EP4000906A4 (en) * | 2019-07-17 | 2023-08-02 | Sumitomo Chemical Company, Limited | Method for manufacturing welded molding, welded molding, and pipe |
EP4197748A1 (en) * | 2021-12-16 | 2023-06-21 | Branson Ultraschall Niederlassung der Emerson Technologies GmbH & Co. oHG | Welding method and respective welding device |
JP2023089946A (en) * | 2021-12-16 | 2023-06-28 | ブランソン ウルトラスチャル ニーデルラッスン デル エマーソン テクノロジーズ ゲゼルシャフト ミット ベシュレンクテル ハフツング アンド カンパニー オーエイチジー | Welding method and respective welding device |
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