JPH074859B2 - Vibration welding method - Google Patents
Vibration welding methodInfo
- Publication number
- JPH074859B2 JPH074859B2 JP33929490A JP33929490A JPH074859B2 JP H074859 B2 JPH074859 B2 JP H074859B2 JP 33929490 A JP33929490 A JP 33929490A JP 33929490 A JP33929490 A JP 33929490A JP H074859 B2 JPH074859 B2 JP H074859B2
- Authority
- JP
- Japan
- Prior art keywords
- bead portion
- welding
- bead
- parallel
- vibration
- 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 - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims description 50
- 238000000034 method Methods 0.000 title claims description 14
- 239000011324 bead Substances 0.000 claims description 108
- 238000003825 pressing Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—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
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- 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
- B29C66/302—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
- B29C66/30223—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 rib-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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
- B29C66/322—Providing cavities in the joined article to collect the burr
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
本発明は、熱可塑性の２物品を振動溶着法により接合す
る方法に関する。The present invention relates to a method for joining two thermoplastic articles by vibration welding.
熱可塑性樹脂製品どうしので接合方法として、従来より
超音波や低周波を利用した振動溶着法が利用されてい
る。しかし接合部の気密性や接合強度の信頼性に乏しか
ったことから、その利用は日用品など接合品質があまり
必要とされない分野が大部分であった。しかしながら、
その作業の容易さなどの長所から、近年工業的な機能部
品の製造にも振動溶着法の利用が検討されている。 例えば、実開平２−61636号公報には、自動車のエアコ
ネクタホースの製造に振動溶着を利用することが開示さ
れている。この場合、開口部に溶着部が表出すると、バ
リや位置ずれなどにより他部品との結合精度が低下する
ため、後仕上げを要するという不具合がある。そこでこ
の公報の考案では、溶着ビードを無端のループ状とし開
口部を除いて設けることとしている。As a joining method between thermoplastic resin products, a vibration welding method using ultrasonic waves or low frequencies has been conventionally used. However, since the airtightness of the joint and the reliability of the joint strength were poor, it was used in most of the fields such as daily necessities where the joint quality was not so required. However,
Due to advantages such as easiness of the work, use of the vibration welding method has been studied in recent years for manufacturing industrial functional parts. For example, Japanese Utility Model Laid-Open No. 2-61636 discloses the use of vibration welding in the manufacture of air connector hoses for automobiles. In this case, when the welded portion is exposed in the opening, the accuracy of coupling with other components is reduced due to burrs, displacement, and the like, which causes a problem that post-finishing is required. Therefore, in the invention of this publication, the welding bead is formed in an endless loop shape and is provided except for the opening.
しかしながら、溶着ビードを無端のループ状とした場
合、振動方向に対して略直角方向に延びる部分の溶着強
度が振動方向と略平行方向に延びる部分に比べて弱いこ
とが明らかとなった。これは、振動時に振動方向に対し
て略直角方向に延びる部分のビードが倒れたり振動した
りして、加圧力や振動の力が充分に伝達されないことに
起因している。この不具合を改善するには、加圧及び振
動の時間を延長することが有効である。しかしこの場合
は溶融部分が増大してバリが全体に発生し、外観が悪く
なるとともにバリ取り工程を行う必要が生じることもあ
る。 本発明はこのような事情に鑑みてなされたものであり、
バリの発生を抑制しつつ、振動方向に対して略直角方向
に延びる部分の溶着ビードの接合強度を向上させること
を目的とする。However, when the welding bead was formed into an endless loop shape, it was revealed that the welding strength of the portion extending in the direction substantially perpendicular to the vibration direction was weaker than that of the portion extending in the direction substantially parallel to the vibration direction. This is because the bead in the portion extending in a direction substantially perpendicular to the vibration direction falls or vibrates during vibration, and the pressing force or vibration force is not sufficiently transmitted. To improve this problem, it is effective to extend the time of pressurization and vibration. However, in this case, the melted portion increases and burrs are generated on the whole, which deteriorates the appearance and may require a deburring step. The present invention has been made in view of such circumstances,
An object of the present invention is to improve the bonding strength of a weld bead in a portion extending in a direction substantially perpendicular to the vibration direction while suppressing the occurrence of burrs.
上記課題を解決する本発明の振動溶着方法は、略ループ
状の溶着ビードをもつ一対の被溶着物のそれぞれの溶着
ビードが対向するように合わせて加圧し一方の被溶着物
を他方の被溶着物に対して相対的に振動させ摩擦熱によ
り一対の被溶着物を一体的に溶着する振動溶着方法にお
いて、 溶着ビードは振動の方向と略平行に延びる平行ビード部
と、平行ビード部と交差する方向に延びる交差ビード部
とからなり、交差ビード部の溶着面の幅を平行ビード部
の溶着面の幅より広く構成したことを特徴とする。 本発明の最大の特徴は、溶着ビードの溶着面の幅を部分
的に異ならせたところにある。すなわち溶着ビードは、
振動方向と略平行な平行ビード部と、平行ビード部と交
差する方向に延びる交差ビード部とから構成されてい
る。そして交差ビード部の幅が平行ビード部の幅より広
く構成されている。 交差ビード部と平行ビード部の溶着面の幅の差は、2mm
以下とするのが好ましい。この差が大きくなり過ぎると
交差ビード部の溶融量が多くなり、バリが発生して外観
が悪くなる。この差は0.8〜1.2mmで充分である。なお、
交差ビード部のみを広くしてもよいが、平行ビード部か
ら徐々に広さを増すように構成するのが、外観面及び強
度面から望ましい。 振動手段には従来と同様に超音波、低周波などを用いる
ことができる。また加圧力も従来と同様に行うことがで
きる。The vibration welding method of the present invention which solves the above-mentioned problems is such that one welding object is welded to the other by pressing the welding beads so that the welding beads of the pair of welding beads having substantially loop-shaped welding beads face each other. In the vibration welding method in which a pair of objects to be welded are integrally welded by vibrating relative to each other by frictional heat, the welding bead intersects the parallel bead portion extending substantially parallel to the vibration direction and the parallel bead portion. It is characterized in that the width of the welding surface of the intersecting bead portion is made wider than the width of the welding surface of the parallel bead portion. The greatest feature of the present invention is that the width of the welding surface of the welding bead is partially different. That is, the weld bead is
The parallel bead portion is substantially parallel to the vibration direction, and the intersecting bead portion extends in a direction intersecting the parallel bead portion. The width of the intersecting beads is wider than that of the parallel beads. The difference in the width of the welded surface between the cross bead and the parallel bead is 2 mm
The following is preferable. If this difference becomes too large, the amount of melting at the intersecting bead portion will increase and burrs will occur, resulting in a poor appearance. This difference of 0.8 to 1.2 mm is sufficient. In addition,
Although it is possible to widen only the intersecting bead portion, it is desirable in view of appearance and strength that the width is gradually increased from the parallel bead portion. Ultrasonic waves, low frequencies, etc. can be used for the vibrating means as in the conventional case. Further, the pressing force can be applied in the same manner as the conventional one.
本発明の振動溶着方法では、溶着ビードが振動方向と略
平行な平行ビード部と、平行ビード部と交差する方向に
延びる交差ビード部とから構成されている。そして交差
ビード部の幅が平行ビード部の幅より広く構成されてい
る。 ところで従来の振動溶着法では、溶着部のシール性や強
度があまり重要視されない日用品などが溶着対象品であ
ったため、被溶着物を成形する金型構造を単純化するた
めに溶着ビードは同一幅とされていた。また溶着ビード
の溶着面の幅を部分的に異ならせると、幅の広い部分で
は単位面積当たりの加圧力が他の部分に比べて小さくな
るため、一般的には幅の広い部分の溶着強度が弱くなる
と思われる。 しかしながら本発明の振動溶着方法では、溶着ビードの
溶着面の幅の差に関わらずほぼ同様の溶着品質が得られ
る。これを微視的に説明すると、溶着時には単位面積当
たりの加圧力が大きな平行ビード部が溶融する。すると
加圧力は次にその大部分がまだ溶融していない交差ビー
ド部に作用し、交差ビード部は大きな加圧力により溶融
する。また交差ビード部は幅が広く厚いために、振動の
力が幅方向に作用しても倒れ込みや揺動が防止され、振
動のエネルギーが確実に伝達される。このような機構に
より全周に均一な溶着品質が得られるものと推察され
る。これにより一対の被溶着物は一体的に溶着して接合
される。 すなわち本発明の振動溶着方法によれば、交差ビード部
に確実に加圧及び振動の力を作用させるとともに、確実
に交差ビード部が溶融するので、従来接合強度の弱かっ
た交差ビード部の部分の接合強度を向上させることがで
きる。また溶融バリも少なく外観面の不具合が少ない。In the vibration welding method of the present invention, the welding bead is composed of the parallel bead portion that is substantially parallel to the vibration direction and the intersecting bead portion that extends in the direction intersecting the parallel bead portion. The width of the intersecting beads is wider than that of the parallel beads. By the way, in the conventional vibration welding method, since daily commodities, etc. where the sealing property and strength of the welded part are not so important, the welding bead has the same width in order to simplify the mold structure for molding the welded object. Was said. In addition, if the width of the welding surface of the welding bead is made partially different, the pressing force per unit area in the wide part becomes smaller than in other parts, so generally the welding strength of the wide part is It seems to be weak. However, according to the vibration welding method of the present invention, substantially the same welding quality can be obtained regardless of the difference in the width of the welding surface of the welding bead. This will be described microscopically. During welding, the parallel bead portion having a large pressing force per unit area is melted. Then, the pressing force then acts on the intersecting bead portion, most of which is not yet melted, and the intersecting bead portion is melted by the large pressing force. Further, since the cross bead portion is wide and thick, even if the vibration force acts in the width direction, the crossing bead portion is prevented from collapsing or swinging, and the vibration energy is reliably transmitted. It is presumed that such a mechanism can obtain uniform welding quality over the entire circumference. As a result, the pair of objects to be welded are integrally welded and joined. That is, according to the vibration welding method of the present invention, the pressure and the force of vibration are surely applied to the cross bead portion, and the cross bead portion is surely melted, so that the cross bead portion of the conventional joining strength is weak. The bonding strength can be improved. In addition, there are few molten burrs, and there are few defects in appearance.
以下、実施例により具体的に説明する。本実施例は自動
車のエアクリーナとキャブレターの間に設けられるエア
コネクタの製造に本実施例を適用したものである。 このエアコネクタは、第１図及び第２図に示すようにナ
イロン製の下側部材１と上側部材２とからなる略筒状
で、下側部材１と上側部材２とを溶着して形成される。 下側部材１は、筒状でエアクリーナホースに接続される
第１開口部10と、軸方向が第１開口部10と直交しスロッ
トルボディに結合される第２開口部11とをもち、第２開
口部11には取り付け穴12を有するフランジ13が放射状に
突出している。そしてその切り欠き状の上面周縁部は、
無端のループ状の下側溶着ビード３から形成されてい
る。この下側溶着ビード３は、一端の第１開口部10側で
周方向に約半周する下側第１交差ビード部30と、下側第
１交差ビード部30に連続し軸方向に他端側へ延びる下側
第１平行ビード部31と、下側第１平行ビード部31に連続
し他端部で略直角に曲折して延びる下側第２交差ビード
部32と、下側第２交差ビード部32からさらに略直角に曲
折して軸方向に一端部側へ逆向きに延び一端部で下側第
１交差ビード部30と接続された下側第２平行ビード部33
とから構成されている。 一方、上側部材２は下側部材１の切り欠き状の上面に対
応する形状で、下端面周縁部には下側溶着ビード３と対
向する無端のループ状の上側溶着ビード４が形成されて
いる。すなわち上側溶着ビード４は、一端の内周表面で
周方向に約半周する上側第１交差ビード部40と、上側第
１交差ビード部40に連続し軸方向に他端側へ延びる上側
第１平行ビード部41と、上側第１平行ビード部41に連続
し他端部で略直角に曲折して延びる上側第２交差ビード
部42と、上側第２交差ビード部42からさらに略直角に曲
折して軸方向に一端部側へ逆向きに延び一端部で上側第
１交差ビード部40と接続された上側第２平行ビード部43
とから構成されている。 下側部材１と上側部材２を重ねた状態における、下側溶
着ビード３と上側溶着ビード４の第２図のＡ−Ａ断面相
当の断面図を第３図に、Ｂ−Ｂ断面相当の断面図を第４
図に示す。下側第２交差ビード部32及び下側第２平行ビ
ード部33の両側には、一対の溝部34が平行に延び、この
溝部34は下側溶着ビード３の全周に形成されている。こ
の溝部34に溶着時にはみ出した溶融樹脂が収容され、外
部に表出して外観が悪くなるのを防止している。 本実施例では、下側第２交差ビード部32と上側第２交差
ビード部42の溶着面の幅（第３図l1）を下側第２平行ビ
ード部33と上側第２平行ビード部43の溶着面の幅（第４
図l2）よい広くなるように構成している。具体的には、
下側第２交差ビード部32と上側第２交差ビード部42の幅
l1は2.5mm、下側第２平行ビード部33と上側第２平行ビ
ード部43の幅l2は1.5mmである。また下側第１交差ビー
ド部30と上側第１交差ビード部40の幅はl1であり、下側
第１平行ビード部31と上側第１平行ビード部41の幅はl2
に構成されている。なお、幅がl1からl2へ移行する部分
は、第５図に示すように溶着面の幅が徐変し、急激な変
化が回避されている。 上記のように構成された下側部材１と上側部材２とを重
ね、下側部材１を固定するとともに上側部材２を300kgf
の加圧力で加圧して下側部材１に圧接させる。そして上
側部材２を、振幅1.3mm、振動数240Hzの条件で軸方向
（第１図矢印Ｖ方向）へ振動させて振動溶着を行う。こ
のとき初期においては、微視的に見ると幅l2で接触して
いる部分のほうが幅l1で接触している部分より単位面積
当たりの加圧力が大きいので、下側第１平行ビード部31
と上側第１平行ビード部41及び下側第２平行ビード部33
と上側第２平行ビード部43とがまず圧接部分で溶融す
る。すると加圧力はその大部分が溶融していない幅l1で
接触している部分に伝わるので、続いて下側第１交差ビ
ード部30と上側第１交差ビード部40及び下側第２平行ビ
ード部33と上側第２平行ビード部43の圧接部分が溶融す
る。そして振動が停止されると、溶融部分が凝固し振動
溶着が完了する。 したがって本実施例の振動溶着法によれば、振動方向Ｖ
と直角方向に延びる下側第１交差ビード部30と上側第１
交差ビード部40及び下側第２交差ビード部32と上側第２
交差ビード部42に作用する加圧力が増する。またこれら
の交差ビード部の幅l1は1.75mmと大きいので、振動時の
倒れ込みや振動が防止され加圧力及び振動のエネルギー
が確実に伝達される。これにより従来溶着が不十分とな
りがちであった交差ビード部の溶着を確実に行うことが
できる。さらに溶融バリが多量に発生することもないの
で、外観上の不具合も防止されている。Hereinafter, a specific description will be given with reference to examples. The present embodiment is applied to the manufacture of an air connector provided between an air cleaner and a carburetor of an automobile. As shown in FIGS. 1 and 2, this air connector has a substantially tubular shape composed of a nylon lower member 1 and an upper member 2, and is formed by welding the lower member 1 and the upper member 2. It The lower member 1 has a cylindrical first opening 10 connected to the air cleaner hose, and a second opening 11 axially orthogonal to the first opening 10 and coupled to the throttle body. A flange 13 having a mounting hole 12 is radially projected in the opening 11. And the notch-shaped upper peripheral portion is
It is formed from an endless loop-shaped lower welding bead 3. The lower weld bead 3 is connected to the lower first intersecting bead portion 30 that is approximately half-circumferential in the circumferential direction on the side of the first opening 10 at one end, and is continuous with the lower first intersecting bead portion 30 and is on the other end side in the axial direction. To the lower first parallel bead portion 31, a lower second crossing bead portion 32 that is continuous with the lower first parallel bead portion 31 and extends at the other end by bending at a substantially right angle, and a lower second crossing bead portion. The second lower parallel bead portion 33 is further bent at a substantially right angle from the portion 32, extends in the axial direction in the opposite direction to the opposite side, and is connected to the lower first intersecting bead portion 30 at the one end.
It consists of and. On the other hand, the upper member 2 has a shape corresponding to the notched upper surface of the lower member 1, and an endless loop-shaped upper welding bead 4 facing the lower welding bead 3 is formed at the peripheral edge of the lower end surface. . That is, the upper weld bead 4 is composed of an upper first intersecting bead portion 40 that makes a semicircle in the circumferential direction on the inner peripheral surface of one end, and an upper first parallel bead that is continuous with the upper first intersecting bead portion 40 and extends axially toward the other end. A bead portion 41, an upper second crossing bead portion 42 which is continuous with the upper first parallel bead portion 41 and extends at the other end by bending at a substantially right angle, and a further bending angle at a substantially right angle from the upper second crossing bead portion 42. The upper second parallel bead portion 43, which extends in the opposite direction to the one end side in the axial direction and is connected to the upper first crossing bead portion 40 at the one end.
It consists of and. A cross-sectional view of the lower weld bead 3 and the upper weld bead 4 corresponding to the AA cross section of FIG. 2 in a state where the lower member 1 and the upper member 2 are overlapped with each other is shown in FIG. Figure 4
Shown in the figure. A pair of groove portions 34 extend in parallel on both sides of the lower second intersecting bead portion 32 and the lower second parallel bead portion 33, and the groove portions 34 are formed on the entire circumference of the lower weld bead 3. The molten resin that has been squeezed out at the time of welding is accommodated in the groove 34 and is prevented from appearing outside and deteriorating the appearance. In the present embodiment, the width of the welding surface of the lower second crossing bead portion 32 and the upper second crossing bead portion 42 (l 1 in FIG. 3) is set to the lower second parallel bead portion 33 and the upper second parallel bead portion 43. Width of welded surface (4th
Figure l 2 ) It is configured to be wide. In particular,
Width of lower second intersecting bead portion 32 and upper second intersecting bead portion 42
l 1 is 2.5 mm, and the width l 2 of the lower second parallel bead portion 33 and the upper second parallel bead portion 43 is 1.5 mm. Further, the width of the lower first cross bead portion 30 and the upper first cross bead portion 40 is l 1 , and the width of the lower first parallel bead portion 31 and the upper first parallel bead portion 41 is l 2
Is configured. In the portion where the width changes from l 1 to l 2 , the width of the welding surface is gradually changed as shown in FIG. 5, and a rapid change is avoided. The lower member 1 and the upper member 2 configured as described above are stacked, the lower member 1 is fixed, and the upper member 2 is 300 kgf.
The pressure is applied to the lower member 1 to press it. Then, the upper member 2 is vibrated in the axial direction (direction of arrow V in FIG. 1) under the conditions of an amplitude of 1.3 mm and a frequency of 240 Hz to perform vibration welding. At this time, in the initial stage, when viewed microscopically, the portion contacting with the width l 2 has a larger pressing force per unit area than the portion contacting with the width l 1 , so the lower first parallel bead portion 31
And the upper first parallel bead portion 41 and the lower second parallel bead portion 33
First, the upper second parallel bead portion 43 and the upper second parallel bead portion 43 melt at the pressure contact portion. Then, most of the pressing force is transmitted to the portion in contact with the unmelted width l 1 , so that the lower first crossing bead portion 30, the upper first crossing bead portion 40, and the lower second parallel bead portion 30 are continuously connected. The press-contacted portion between the portion 33 and the upper second parallel bead portion 43 is melted. When the vibration is stopped, the molten portion is solidified and the vibration welding is completed. Therefore, according to the vibration welding method of the present embodiment, the vibration direction V
Lower first intersecting bead portion 30 and upper first extending in a direction perpendicular to
Cross bead portion 40 and lower second cross bead portion 32 and upper second
The pressing force acting on the cross bead portion 42 increases. Further, since the width l 1 of these intersecting bead portions is as large as 1.75 mm, collapse and vibration at the time of vibration are prevented, and the pressing force and vibration energy are reliably transmitted. As a result, the welding of the cross bead portion, which has been apt to be insufficiently welded conventionally, can be reliably performed. Further, since a large amount of molten burr does not occur, a defect in appearance is prevented.
図面は本発明の一実施例の振動溶着方法に関し、第１図
は被溶着物の正面図、第２図は被溶着物の平面図、第３
図は第２図のＡ−Ａ断面図、第４図は第２図のＢ−Ｂ断
面図、第５図は被溶着物の要部拡大斜視図である。 1:下側部材、2:上側部材 3:下側溶着ビード:4:上側溶着ビード 30、32、40、42:交差ビード部 31、33、41、43:平行ビード部The drawings relate to a vibration welding method according to an embodiment of the present invention, in which FIG. 1 is a front view of an object to be welded, FIG. 2 is a plan view of the object to be welded, and FIG.
FIG. 4 is a sectional view taken along the line AA of FIG. 2, FIG. 4 is a sectional view taken along the line BB of FIG. 2, and FIG. 1: Lower member 2: Upper member 3: Lower weld bead: 4: Upper weld bead 30, 32, 40, 42: Crossed bead part 31, 33, 41, 43: Parallel bead part
Claims (1)
着物のそれぞれの該溶着ビードが対向するように合わせ
て加圧し一方の該被溶着物を他方の該被溶着物に対して
相対的に振動させ摩擦熱により一対の該被溶着物を一体
的に溶着する振動溶着方法において、 前記溶着ビードは前記振動の方向と略平行に延びる平行
ビード部と、該平行ビード部と交差する方向に延びる交
差ビード部とからなり、該交差ビード部の溶着面の幅を
該平行ビード部の溶着面の幅より広く構成したことを特
徴とする振動溶着方法。1. A pair of to-be-welded objects having substantially leap-shaped to-be-welded objects are pressed together such that the to-be-welded beads are opposed to each other, and one of the to-be-welded objects is opposed to the other to-be-welded object. In a vibration welding method in which a pair of the objects to be welded are integrally welded by frictional heat by vibrating mechanically, the welding bead has a parallel bead portion extending substantially parallel to the vibration direction and a direction intersecting the parallel bead portion. And a cross bead portion extending to the cross bead portion, the width of the welding surface of the cross bead portion being wider than the width of the welding surface of the parallel bead portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33929490A JPH074859B2 (en) | 1990-11-30 | 1990-11-30 | Vibration welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33929490A JPH074859B2 (en) | 1990-11-30 | 1990-11-30 | Vibration welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04208436A JPH04208436A (en) | 1992-07-30 |
| JPH074859B2 true JPH074859B2 (en) | 1995-01-25 |
Family
ID=18326096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33929490A Expired - Fee Related JPH074859B2 (en) | 1990-11-30 | 1990-11-30 | Vibration welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074859B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002220A (en) * | 2007-06-21 | 2009-01-08 | Mahle Filter Systems Japan Corp | Resin assembly and method for manufacturing the same |
| JP4916019B2 (en) * | 2007-07-23 | 2012-04-11 | ダイキョーニシカワ株式会社 | Vibration welding structure of resin molded products |
-
1990
- 1990-11-30 JP JP33929490A patent/JPH074859B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04208436A (en) | 1992-07-30 |
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