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JP3754590B2 - Welding confirmation method for vibration welded part in vibration welding method - Google Patents
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JP3754590B2 - Welding confirmation method for vibration welded part in vibration welding method - Google Patents

Welding confirmation method for vibration welded part in vibration welding method Download PDF

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Publication number
JP3754590B2
JP3754590B2 JP2000043591A JP2000043591A JP3754590B2 JP 3754590 B2 JP3754590 B2 JP 3754590B2 JP 2000043591 A JP2000043591 A JP 2000043591A JP 2000043591 A JP2000043591 A JP 2000043591A JP 3754590 B2 JP3754590 B2 JP 3754590B2
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Prior art keywords
vibration
synthetic resin
welding
welded portion
confirmation
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JP2000043591A
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JP2001225389A (en
Inventor
栄司 露木
俊郎 川東
亮仁 赤井
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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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
    • B29C66/97—Checking completion of joining or correct joining by using indications on at least one of the joined parts
    • B29C66/972—Checking completion of joining or correct joining by using indications on at least one of the joined parts by extrusion of molten 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
    • 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
    • B29C65/0609—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
    • B29C65/0618—Linear
    • 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
    • B29C66/11—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
    • 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
    • B29C66/73—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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、振動溶着法の適用下において、被振動溶着部の溶着を確認する方法に関する。
【０００２】
【従来の技術】
従来、この種の確認を行う場合は、（１）振動溶着機における固定型の沈み量を測定する、（２）両合成樹脂部材間の隙間をノギス、シックネスゲージ等により測定する、（３）抜き取りによる破壊検査を行う、といった方法が採用されている。
【０００３】
【発明が解決しようとする課題】
しかしながら前記（１）法によると、前記沈み量が１〜２mm程度であることから精度ばらつきが発生し易く、また前記（２）法によると、製品形状等によっては前記測定を行うことができないことがあり、さらに前記（３）法によると、工数が多く、また製品歩留りを悪化させる、といった問題があった。
【０００４】
【課題を解決するための手段】
本発明は、極めて簡単な手段を採用することによって、被振動溶着部の溶着を正確、且つ迅速に、しかも、製品形状等からの制約なしに確認し得るようにした振動溶着方法における被振動溶着部の溶着確認方法を提供することを目的とする。
【０００５】
前記目的を達成するため本発明は、互いに重なり合う一対の合成樹脂部材相互を、その一方の合成樹脂部材にその対向二辺間に亘り設けた凸条形被振動溶着部を他方の合成樹脂部材の、該凸条形被振動溶着部の横幅と同一幅の被振動溶着部に密着させた状態で、該凸条形被振動溶着部の長手方向に沿う方向の振動により振動溶着するようにした振動溶着方法において、前記他方の合成樹脂部材の被振動溶着部の長手方向中央には、その被振動溶着部を貫通し且つ前記凸条形被振動溶着部の横幅と同一幅の確認孔を形成し、振動溶着過程における前記確認孔内への溶融合成樹脂の進入を視認して両被振動溶着部の溶着を確認することを特徴とする。
【０００６】
振動溶着過程で、両部材の被振動溶着部が溶着するためには、それらが溶融しなければならない。この溶融が生じれば、その溶融合成樹脂の一部が確認孔内に進入する。
【０００７】
したがって振動溶着後、確認孔内に所定量の溶融合成樹脂が進入したことを視認することによって両部材の溶着を確認することができる。
【０００８】
この場合、確認孔を、両部材よりなる製品において、裏面側に位置する方の部材に形成すれば、その確認孔による製品の外観低下、といった不具合を回避することができる。
【０００９】
【発明の実施の形態】
図１において、方形平板状第１および第２合成樹脂部材１，２は振動溶着される。第１合成樹脂部材１は、その一方の対向二辺間に亘る所定幅の帯状被振動溶着部３を有し、その中央部に、それを貫通するように少なくとも１つ、実施例では１つの確認孔４が形成されている。第２合成樹脂部材２は、その一方の対向二辺間に亘り、且つ所定の幅および高さを有する凸条形被振動溶着部５を備えている。図１において凸条形被振動溶着部５の両側縁にそれぞれ対応して引かれた一点鎖線からも明らかなように、前記帯状被振動溶着部３及び前記確認孔４は、凸条形被振動溶着部５の横幅と同一幅に形成されている。
【００１０】
両合成樹脂部材１，２の振動溶着は次のような方法で行われる。
【００１１】
図２（ａ）に示すように、第２合成樹脂部材２を、その凸条形被振動溶着部５を上方に向けて所定の治具に設置する。次いで、その部材２の上に第１合成樹脂部材１を重ね合せ、その後、振動源側の治具により第１の合成樹脂部材１を第２の合成樹脂部材２に所定の圧力を以て押付ける。これにより両合成樹脂部材１，２の被振動溶着部３，５が密着し、また確認孔４が凸条形被振動溶着部５の頂面ａに臨む。
【００１２】
図２（ｂ）に示すように、第１合成樹樹脂部材１を、矢印で示すごとく凸条形被振動溶着部５の長手方向と平行に振動させる。これにより両部材１，２の被振動溶着部３，５が摩擦熱により溶融し、その溶融合成樹脂６の一部が確認孔４内に進入する。
【００１３】
図２（ｃ）に示すように、凸条形被振動溶着部５が溶けて無くなる頃には確認孔４内が溶融合成樹脂６により満たされる。
【００１４】
したがって、振動溶着後において、確認孔４が、硬化した合成樹脂６により満たされていることによって、被振動溶着部３，５の溶着が確認される。一方、確認孔４内への溶融合成樹脂６の進入が僅少である場合は溶着が不十分であることが判る。
【００１５】
なお、確認孔４の容積、凸条形被振動溶着部５の体積等の変化により、確認孔４内への溶融合成樹脂６の進入量が図２（ｂ）のように確認孔４の半分程度である場合を溶着終了、とすることもできる。
【００１６】
本発明は、具体的には、車両用合成樹脂製インストルメントパネルの裏面側に、空調用合成樹脂製ダクト等を振動溶着する場合等に適用される。この場合、確認孔４は部材の外観を損わない部位に１つ以上形成される。
【００１７】
【発明の効果】
本発明によれば、互いに重なり合う一対の合成樹脂部材相互を、その一方の合成樹脂部材に設けた凸条形被振動溶着部を他方の合成樹脂部材の、該凸条形被振動溶着部の横幅と同一幅の被振動溶着部に密着させた状態で、該凸条形被振動溶着部の長手方向に沿う方向の振動により振動溶着するようにした振動溶着方法において、前記他方の合成樹脂部材の被振動溶着部の長手方向中央には、その被振動溶着部を貫通し且つ前記凸条形被振動溶着部の横幅と同一幅の確認孔を形成し、振動溶着過程における前記確認孔内への溶融合成樹脂の進入を視認して両被振動溶着部の溶着を確認するようにしたので、両合成樹脂部材の被振動溶着部の溶着を正確、且つ迅速に、しかも製品形状等からの制約なしに確認することが可能となる。
【図面の簡単な説明】
【図１】 振動溶着される第１および第２合成樹脂部材の斜視図である。
【図２】 振動溶着過程の断面図である。
【符号の説明】
１………第１合成樹脂部材
２………第２合成樹脂部材
３………被振動溶着部
４………確認孔
５………被振動溶着部
６………溶融合成樹脂[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for confirming welding of a vibration welded portion under application of a vibration welding method.
[0002]
[Prior art]
Conventionally, when this type of confirmation is performed, (1) the amount of sinking of the stationary mold in the vibration welding machine is measured, (2) the gap between both synthetic resin members is measured with a caliper, a thickness gauge, etc. (3) A method of performing destructive inspection by sampling is adopted.
[0003]
[Problems to be solved by the invention]
However, according to the method (1), since the amount of sinking is about 1 to 2 mm, accuracy variation is likely to occur, and according to the method (2), the measurement cannot be performed depending on the product shape or the like. Further, according to the method (3), there are problems that the number of man-hours is large and the product yield is deteriorated.
[0004]
[Means for Solving the Problems]
The present invention adopts a vibration welding method in a vibration welding method in which the welding of the vibration welding portion can be confirmed accurately and quickly without any restrictions from the product shape, etc. by adopting extremely simple means. It aims at providing the welding confirmation method of a part.
[0005]
In order to achieve the above-mentioned object, the present invention provides a pair of synthetic resin members that overlap with each other, and has a ridge-shaped vibration welded portion that is provided on one synthetic resin member between two opposite sides of the other synthetic resin member. And vibration welded by vibration in a direction along the longitudinal direction of the ridge-shaped vibration welded portion in close contact with the vibration-welded portion having the same width as the width of the ridge-shaped vibration welded portion. In the welding method, a confirmation hole that penetrates the vibration welded portion and has the same width as the lateral width of the convex vibration welded portion is formed at the longitudinal center of the vibration welded portion of the other synthetic resin member. The welding of the both vibration welded parts is confirmed by visually confirming the entrance of the molten synthetic resin into the confirmation hole in the vibration welding process.
[0006]
In order for the vibration welded portions of both members to weld in the vibration welding process, they must melt. If this melting occurs, a part of the molten synthetic resin enters the confirmation hole.
[0007]
Therefore, after vibration welding, welding of both members can be confirmed by visually confirming that a predetermined amount of molten synthetic resin has entered the confirmation hole.
[0008]
In this case, if the confirmation hole is formed in the member located on the back surface side in the product composed of both members, it is possible to avoid problems such as deterioration in the appearance of the product due to the confirmation hole.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, the rectangular flat plate-like first and second synthetic resin members 1 and 2 are vibration welded. The first synthetic resin member 1 has a belt-shaped vibration welded portion 3 having a predetermined width extending between two opposing sides of the first synthetic resin member 1, and at least one in the center thereof, and one in the embodiment. A confirmation hole 4 is formed. The second synthetic resin member 2 includes a ridge-shaped vibration welded portion 5 that extends between two opposing sides and has a predetermined width and height. Each side edge of Oite convex shape the vibration welding portion 5 as is apparent from correspondingly one-dot chain line drawn in FIG. 1, the band-like target vibration welding portion 3 and the confirmation hole 4 is convex shaped It is formed in the same width as the lateral width of the vibration welded portion 5 .
[0010]
The vibration welding of both the synthetic resin members 1 and 2 is performed by the following method.
[0011]
As shown in FIG. 2 (a), the second synthetic resin member 2 is placed on a predetermined jig with its convex strip-shaped vibration welded portion 5 facing upward. Next, the first synthetic resin member 1 is overlaid on the member 2, and then the first synthetic resin member 1 is pressed against the second synthetic resin member 2 with a predetermined pressure by a jig on the vibration source side. As a result, the vibration-welded portions 3 and 5 of the both synthetic resin members 1 and 2 are brought into close contact with each other, and the confirmation hole 4 faces the top surface a of the ridge-shaped vibration-welded portion 5.
[0012]
As shown in FIG. 2B, the first synthetic resin member 1 is vibrated in parallel with the longitudinal direction of the ridge-shaped vibration welded portion 5 as indicated by an arrow. Thereby, the vibration welded portions 3 and 5 of both members 1 and 2 are melted by frictional heat, and a part of the melted synthetic resin 6 enters the confirmation hole 4.
[0013]
As shown in FIG. 2C, the confirmation hole 4 is filled with the molten synthetic resin 6 when the ridge-shaped vibration welded portion 5 is melted and disappears.
[0014]
Therefore, after the vibration welding, the confirmation hole 4 is filled with the hardened synthetic resin 6 so that the welding of the vibration welded portions 3 and 5 is confirmed. On the other hand, if the molten synthetic resin 6 enters the confirmation hole 4 very little, it can be seen that the welding is insufficient.
[0015]
Note that the amount of the molten synthetic resin 6 entering the confirmation hole 4 is half that of the confirmation hole 4 as shown in FIG. The case where it is about can also be set as the end of welding.
[0016]
More specifically, the present invention is applied to a case where an air conditioning synthetic resin duct or the like is vibration welded to the back side of a vehicle synthetic resin instrument panel. In this case, one or more confirmation holes 4 are formed in a portion that does not impair the appearance of the member.
[0017]
【The invention's effect】
According to the present invention, a pair of synthetic resin members that are overlapped with each other are arranged so that the convex-shaped vibration welded portion provided on one synthetic resin member is the width of the convex-shaped vibration-welded portion of the other synthetic resin member. In the vibration welding method in which vibration welding is performed by vibration in a direction along the longitudinal direction of the ridge-shaped vibration welded portion in close contact with the vibration welded portion having the same width as that of the other synthetic resin member, At the center in the longitudinal direction of the vibration welded portion, a confirmation hole is formed that penetrates the vibration welded portion and has the same width as the lateral width of the ridge-shaped vibration welded portion, and enters the confirmation hole in the vibration welding process. Since the welded parts of both vibration welds are confirmed by visually confirming the intrusion of the molten synthetic resin, the welded welded parts of both synthetic resin members can be welded accurately and quickly, and there are no restrictions on the product shape, etc. It becomes possible to confirm.
[Brief description of the drawings]
FIG. 1 is a perspective view of first and second synthetic resin members to be welded by vibration.
FIG. 2 is a sectional view of a vibration welding process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ......... 1st synthetic resin member 2 ......... 2nd synthetic resin member 3 ......... Vibration welding part 4 ......... Check hole 5 ......... Vibration welding part 6 ......... Molding synthetic resin

Claims (1)

互いに重なり合う一対の合成樹脂部材（１，２）相互を、その一方の合成樹脂部材（２）にその対向二辺間に亘り設けた凸条形被振動溶着部（５）を他方の合成樹脂部材（１）の、該凸条形被振動溶着部（５）の横幅と同一幅の被振動溶着部（３）に密着させた状態で、該凸条形被振動溶着部（５）の長手方向に沿う方向の振動により振動溶着するようにした振動溶着方法において、
前記他方の合成樹脂部材（１）の被振動溶着部（３）の長手方向中央には、その被振動溶着部（３）を貫通し且つ前記凸条形被振動溶着部（５）の横幅と同一幅の確認孔（４）を形成し、振動溶着過程における前記確認孔（４）内への溶融合成樹脂（６）の進入を視認して両被振動溶着部（３，５）の溶着を確認することを特徴とする、振動溶着方法における被振動溶着部の溶着確認方法。A pair of synthetic resin members (1, 2), which overlap each other, are provided on one synthetic resin member (2) between the two opposing sides, and the other ridge-shaped vibration welded portion (5) is provided on the other synthetic resin member. The longitudinal direction of the ridge-shaped vibration welded portion (5) in the state of being in close contact with the vibration-welded portion (3) having the same width as the horizontal width of the ridge-shaped vibration welded portion (5). In a vibration welding method in which vibration welding is performed by vibration in a direction along
At the center in the longitudinal direction of the vibration welded portion (3) of the other synthetic resin member (1), the width of the convex welded welded portion (5) passing through the vibration welded portion (3) and A confirmation hole (4) having the same width is formed, and the welded synthetic resin (6) is visually inspected into the confirmation hole (4) in the vibration welding process to weld both vibration weld parts (3, 5). A welding confirmation method for a vibration welded portion in a vibration welding method, characterized in that the confirmation is performed.
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