DE2216745B1 - PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESS - Google Patents
PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESSInfo
- Publication number
- DE2216745B1 DE2216745B1 DE19722216745 DE2216745A DE2216745B1 DE 2216745 B1 DE2216745 B1 DE 2216745B1 DE 19722216745 DE19722216745 DE 19722216745 DE 2216745 A DE2216745 A DE 2216745A DE 2216745 B1 DE2216745 B1 DE 2216745B1
- Authority
- DE
- Germany
- Prior art keywords
- welding
- hollow chamber
- elevations
- chamber profile
- welding part
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 26
- 239000004033 plastic Substances 0.000 title claims description 14
- 229920003023 plastic Polymers 0.000 title claims description 14
- 238000005304 joining Methods 0.000 title description 2
- 238000003466 welding Methods 0.000 claims description 60
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic 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
- 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
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
-
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
- B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Verbinden von Kunststoff-Teilen mittels Ultraschall, wobei zur besseren Ausnutzung der Energie an der Oberfläche wenigstens eines der zu verbindenden Teile Erhöhungen ausgebildet sind, sowie ein vorteilhaftes Schweißteil zur Durchführung des Verfahrens.The invention relates to a method for connecting plastic parts by means of ultrasound, wherein for better utilization of the energy on the surface of at least one of the parts to be connected Elevations are formed, as well as an advantageous welding part for carrying out the method.
Das Verfahren zum Verbinden von Kunststoff-Teilen mittels Ultraschall ist bekannt. Hierbei wird elektrische Energie in hochfrequente Schwingungen verwandelt, die Reibung und damit Wärme erzeugen. Aus der allgemeinen Netzfrequenz von 50 oder 60Hz werden dabei 20000Hz. In einem Umformer werden die elektrischen Schwingungen auf piezoelektrischem Wege in mechanische Schwingungen verwandelt. The method for joining plastic parts by means of ultrasound is known. Here is electrical energy is converted into high-frequency vibrations that generate friction and thus heat. The general network frequency of 50 or 60Hz becomes 20000Hz. In a converter the electrical vibrations are converted into mechanical vibrations by piezoelectric means.
Beim Schweißvorgang berührt das die Schwingungen übertragende Werkzeug, die Sonotrode, direkt das Werkstück. Die Sonotrode schwingt dabei auf und ab, wobei die erzeugten Ultraschall-Schwingungen während einer vorgegebenen Zeitdauer auf das Werkstück einwirken. Dabei dringen diese Ultraschall-Schwingungen bis zur Trennfuge in das Kunststoff-Material ein. Hier reiben auf Grund der erzeugten Ultraschall-Schwingungen die zu verbindenden Oberflächen aufeinander und erzeugen Wärme, welche schließlich die Oberflächen plastifiziert. Unter gleichzeitig wirkendem Anpreßdruck verschweißen die Berührungsflächen miteinander.During the welding process, the tool that transmits the vibrations, the sonotrode, comes into direct contact the workpiece. The sonotrode swings up and down, with the generated ultrasonic vibrations act on the workpiece for a predetermined period of time. These ultrasonic vibrations penetrate into the plastic material up to the parting line. Here rub due to the generated Ultrasonic vibrations the surfaces to be connected to each other and generate heat, which finally plasticizes the surfaces. Weld while applying pressure the contact surfaces with each other.
Um zuverlässige Schweißverbindungen zu erzielen, werden die Nahtpartien derart ausgebildet, daß an einer der miteinander zu verbindenden Oberflächen ein einseitiger Vorsprung von in der Regel dreieckigem Querschnitt angeordnet ist, welcher sich vorzugsweise in der Mitte der Wandungsbreite befindet. Mit seiner Spitze berührt dieses Dreieck dieIn order to achieve reliable welded connections, the seam parts are designed in such a way that on one of the surfaces to be connected to one another a one-sided projection of usually triangular shape Cross section is arranged, which is preferably located in the middle of the wall width. With its tip this triangle touches the
ίο ebene Gegenfläche, wobei die Dreikantrippe die Schwingungsenergie in den Schweißbereich richtet. Die Rippe wird beim Schweißvorgang — an der Spitze beginnend — allmählich plastisch, bis sich schließlich die Wandflächen berühren und auf ganzer Breite miteinander verschweißen.ίο flat counter surface, the triangular rib being the Directs vibration energy into the welding area. The rib is during the welding process - on the Beginning with the tip - gradually plastic, until finally the wall surfaces touch and all over Weld the width together.
Die Anwendbarkeit des Ultraschallschweißens hängt wesentlich vom gewählten Kunststoff ab, denn jedes einzelne Kunststoff-Material ist durch einen bestimmten Elastizitätsmodul und ein bestimmtes Dämpfungsverhalten gekennzeichnet. Je steifer das Material ist, desto besser sind seine akustischen Eigenschaften für das Ultraschall-Schweißen. Aus diesem Grunde sind z. B. harte Kunststoffe wie Polystyrol, Acrylglas, ABS usw. im Wege des Ultraschall-Schweißverfahrens gut miteinander zu verbinden, während z.B. weiche Thermoplaste wie Polyäthylen, Polypropylen und PVC-weich nicht oder nur schlecht auf diese Weise miteinander zu verbinden sind.The applicability of ultrasonic welding depends essentially on the selected plastic, because Every single plastic material has a certain modulus of elasticity and a certain one Marked attenuation behavior. The stiffer the material, the better its acoustic Properties for ultrasonic welding. For this reason z. B. hard plastics such as polystyrene, Acrylic glass, ABS, etc. can be joined together well using the ultrasonic welding process, while, for example, soft thermoplastics such as polyethylene, polypropylene and soft PVC are not or only not bad to connect in this way.
Die Erfindung hat sich die Aufgabe gestellt, die Vorteile des bekannten Ultraschall-Schweißverfahrens auch auf solche Fälle auszudehnen, in denen Profile aus Kunststoff in ebenfalls aus Kunststoff bestehenden Hohlkammerprofileti fest angeordnet werden sollen. Erfindungsgemäß wird hierzu vorgeschlagen, daß an wenigstens zwei gegenüberliegenden Umfangsflächen eines Schweißteils die Erhöhungen derart ausgebildet sind, daß das Schweißteil in seinen äußeren Abmessungen größer gehalten ist als die lichte Weite eines Hohlkammerprofils, wodurch beim Einsetzen des Schweißteils die Wandung des Hohlkammerprofils entsprechend dem gewählten Übermaß an zwei gegenüberliegenden Seiten unter Spannungsbildung nach außen gedrückt wird, und daß diese Aufweitung unter Ausgleichung der beim Einbringen des Schweißteils in den Wandungen des Hohlkammerprofils entstandenen Spannungen durch die anschließende Ultrabeschallung bei gleichzeitiger Verschweißung der gegenüberliegenden Außenwände des Schweißteils mit den zugeordneten Innenwandflächen des Hohlkammerprofils eingeebnet wird.The invention has set itself the task of using the advantages of the known ultrasonic welding process also to extend to those cases in which profiles made of plastic are also made of plastic Hohlkammerprofileti are firmly arranged should. According to the invention it is proposed for this purpose that at least two opposite Peripheral surfaces of a welding part, the elevations are formed such that the welding part in its external dimensions is kept larger than the clear width of a hollow chamber profile, whereby the Insertion of the welding part the wall of the hollow section according to the selected oversize is pressed outwards on two opposite sides with the formation of tension, and that this expansion while compensating for the when the welding part is introduced into the walls of the Hollow chamber profile created tensions by the subsequent ultrasound with simultaneous Welding of the opposite outer walls of the welding part to the associated inner wall surfaces the hollow profile is leveled.
Das erfindungsgemäße Verfahren kombiniert die Phänomene der sogenannten Nah- und Fernfeldverschweißung, die beim Ultraschall-Schweißen auftreten. Von einer Nahfeldschweißung, auch kontinuierliche Schweißung genannt, wird dann gesprochen, wenn die Ultraschall-Energie von der Auflagefläche der Sonotrode bis zur Schweißnaht keine oder nur eine geringe Entfernung durchlaufen muß. Eine Fernfeldschweißung liegt demgegenüber dann vor, wenn die Ultraschall-Energie eine längere Entfernung, die bis zu mehreren Zentimetern betragen kann, durch den Kunststoff zur Schweißstelle geleitet wird. Hierfür ist eine ausreichende Härte des Kunststoff-Materials erforderlich, da durch weich eingestellte Kunststoffe die Ultraschall-Energie absorbiert und somit eine Verschweißung im Fernfeld in diesen Fällen nicht möglich ist.The method according to the invention combines the phenomena of so-called near and far field welding, that occur during ultrasonic welding. From a near field welding, also continuous Called welding, it is spoken when the ultrasonic energy is from the contact surface the sonotrode does not have to travel a short distance or no distance to the weld seam. One Far-field welding, on the other hand, occurs when the ultrasonic energy covers a longer distance, which can be up to several centimeters, passed through the plastic to the welding point will. The plastic material must have sufficient hardness for this required because the soft plastics absorb the ultrasonic energy and thus welding in the far field is not possible in these cases.
Die Lehre der Erfindung besagt, daß bei einer Verschweißung eines z. B. kompakten Profils in einer Kammer eines Hohlkammerprofils das Schweißprofil mit Übermaß in die Hohlkammer eingedrückt werden muß. Da jedoch die Verschweißung glatter Wandflächen von der aufzubringenden Energie und vom anzuwendenden Druck her sehr aufwendig und oftmals überhaupt nicht mit gutem Ergebnis durchzuführen ist, sagt die Lehre der Erfindung darüber hinaus, daß das Übermaß durch die Erhöhungen, welche auf dem Schweißteil angeordnet sind, herbeigeführt wird.The teaching of the invention says that when a z. B. compact profile in one Chamber of a hollow chamber profile, the welding profile is pressed into the hollow chamber with an oversize got to. However, since the welding of smooth wall surfaces depends on the energy and The pressure to be applied is very time-consuming and often not at all with good results is, the teaching of the invention also says that the excess is caused by the elevations, which are arranged on the welding part, is brought about.
Wenn das Schweißteil mit dem durch die Erhöhung gebildeten Übermaß in die geringermaßige Kammer des Hohlkammerprofils eingedrückt wird, bewirken die Erhöhungen, daß die gegenüberliegenden Wände der Hohlkammer unter Spannungsbildung nach außen gedrückt werden. Dabei bilden die Spitzen der Erhöhungen die Berührungspunkte zwischen dem Schweißteil und der Innenwandung der Hohlkammer. Wählt man dreieckförmige Erhöhungen, so sind die Spitzen dieser Dreiecke gegen die ebenen Innenwandflächen der Hohlkammer gedrückt. An den sich gegenüberliegenden Innenwandflächen der Hohlkammer sind dadurch die Auflagepunkte geschaffen, die eine zuverlässige Ultraschall-Schweißverbindung erst ermöglichen.If the welding part with the excess formed by the increase in the smaller Chamber of the hollow profile is depressed, the increases cause the opposite Walls of the hollow chamber are pressed outwards with the formation of tension. The The tips of the elevations are the points of contact between the welding part and the inner wall of the Hollow chamber. If you choose triangular elevations, the points of these triangles are against the pressed flat inner wall surfaces of the hollow chamber. On the opposing inner wall surfaces This creates the support points in the hollow chamber, which ensure a reliable ultrasonic welded connection first enable.
Wird bei der Durchführung des Ultraschall-Schweißvorgangs die Sonotrode an der einen Außenwand des Hohlkammerprofils angesetzt, an deren Innenwand die dreieckförmigen Erhöhungen des eingedrückten Schweißteils eine Aufweitung der Kammer an dieser Stelle herbeigeführt haben, so liegt die gegenüberliegende Außenwand des Hohlkammerprofils, an der diese Ausweitung durch die gegenüberliegenden Erhöhungen des Schweißteils ebenfalls herbeigeführt wurde, auf dem in der Fachsprache als »Amboß« bezeichneten Gegenlager. Bei der Zuführung der Schwingungsenergie werden die im Bereich der Sonotrode liegenden Erhöhungen im Wege der Nahfeldschweißung allmählich plastifiziert, bis sich schließlich die Innenwandflächen der Hohlkammer mit dem Grundkörper des Schweißteils unter Einebnung der Erhöhungen auf ganzer Breite verschweißen. Gleichzeitig geschieht dieser Vorgang im Wege der Fernfeldschweißung auf der gegenüberliegenden, dem Amboß zugekehrten Seite des Hohlkammerprofils. Auch dort werden die dreieckförmigen Erhöhungen plastifiziert und die Wandteile verschweißt. Diese gleichzeitige Verschweißung im Nah- und Fernfeldbereich geschieht unter gleichzeitiger Ausgleichung der beim Einbringen des Schweißteils in den Wandungen des Hohlkammerprofils entstandenen Spannungen. Die Gleichzeitigkeit der Vorgänge bewirkt, daß durch die Verschweißung keine neuen Spannungen in den Wandteilen erzeugt werden, die möglicherweise später zu Rißbildungen oder sonstigen Zerstörungen der Schweißverbindungen führen könnten.Used when performing the ultrasonic welding process the sonotrode is attached to one outer wall of the hollow chamber profile, to its inner wall the triangular elevations of the pressed-in welding part result in a widening of the chamber have brought about at this point, the opposite outer wall of the hollow chamber profile is located, on which this expansion is also brought about by the opposing elevations of the welded part on the counter-bearing known in technical terms as the "anvil". When feeding the vibrations in the area of the sonotrode increases in the way of Near field welding gradually plasticized until finally the inner wall surfaces of the hollow chamber weld it to the main body of the welding part while leveling the elevations over the entire width. At the same time, this process takes place by way of far-field welding on the opposite, the anvil facing side of the hollow chamber profile. There are also the triangular ridges plasticized and the wall parts welded. This simultaneous welding in the near and Far field area occurs while at the same time compensating for the when the welding part is introduced into the walls of the hollow chamber profile created tensions. The simultaneity of the processes has the effect that no new stresses are generated in the wall parts by the welding possibly later lead to the formation of cracks or other destruction of the welded joints could.
Ein Schweißteil zur Durchführung des erfindungsgemäßen Verfahrens kann vorteilhaft derart ausgebildet sein, daß an wenigstens zwei gegenüberliegenden Umfangsflächen eines Grundkörpers rippenartige Erhöhungen angeordnet sind, welche derart gebildet sind, daß ihre Höhe annähernd zu drei Vierteln das lichte Maß des zwischen dem Grundkörper und den gegenüberliegenden Innenwänden des Hohlkammerprofils gebildeten Spaltes übersteigt. Diese Anordnung der Erhöhungen soll einerseits verhindern, daß beim Plastifizieren der Erhöhungen während des Schweißvorgangs bei zu großen oder zu kompakten Erhöhungen zu viel Material verflüssigt werden muß, welches den zwischen dem Grundkörper und dem Hohlkammerprofil gebildeten Spalt überfüllen würde, so daß die Gefahr besteht, daß eine völlige Einebnung der Aufweitung nicht zu erreichen ist. Andererseits soll dadurch verhindert werden, daß bei zu kleinen Rippen zu wenig Material plastifiziert wird, um eine optimale Schweißverbindung herbeizuführen. Im letzteren Fall besteht sogar die Gefahr, daß Seiten- oder Stützwände des Hohlkammerprofils in die Plastifizierungszone einbezogen und eventuell beschädigt würden.A welding part for carrying out the method according to the invention can advantageously be designed in this way be that rib-like on at least two opposite circumferential surfaces of a base body Elevations are arranged, which are formed such that their height is approximately three quarters the clear dimension between the base body and the opposing inner walls of the hollow chamber profile formed gap exceeds. This arrangement of the elevations is intended, on the one hand, to prevent that when plasticizing the elevations during the welding process if too large or too compact elevations too much material must be liquefied, which between the base body and the hollow profile would overfill the gap formed, so that there is a risk that a complete leveling of the widening cannot be achieved. On the other hand, this should prevent that if the ribs are too small, too little material is plasticized to achieve an optimal welded joint bring about. In the latter case, there is even the risk that side or support walls of the hollow chamber profile would be included in the plasticizing zone and possibly damaged.
Es ist nicht erforderlich, daß auf dem Schweißteil zur Durchführung des erfindungsmäßigen Verfahrens rippenartige Erhöhungen angeordnet sein müssen. Vielmehr sind eine oder mehrere Erhöhungen in beliebiger Form möglich, wobei diese Erhöhungen lediglich die Aufgaben zu erfüllen haben, die Ultraschall-Energie in optimaler Weise in den Schweißbereich zu leiten und während des Schweißvorgangs in möglichst einfacher Form aufgeschmolzen zu werden. It is not necessary that on the welding part to carry out the inventive method rib-like elevations must be arranged. Rather, there are one or more increases in any Form possible, whereby these elevations only have to fulfill the tasks of the ultrasonic energy in an optimal way in the welding area and during the welding process in to be melted in the simplest possible form.
In der Zeichnung ist eine Ausführungsform eines rechteckigen Schweißteils schematisch dargestellt; es zeigtIn the drawing, an embodiment of a rectangular welding part is shown schematically; it shows
F i g. 1 ein in die Hohlkammer eingesetztes Schweißteil,F i g. 1 a welded part inserted into the hollow chamber,
F i g. 2 ein Schweißteil in Draufsicht.F i g. 2 shows a welding part in plan view.
In F i g. 1 ist der Grundkörper 1 des Schweißteils im Querschnitt quadratisch gehalten. An jeder äußeren Umfangsfläche des Grundkörpers 1 sind axial verlaufende, rippenartige Erhöhungen 11 angeformt, welche die jeweilige Umfangsfläche in ihrer ganzen Länge überziehen. Die dargestellte Ausführungsform verdeutlicht, in welcher Weise durch das von den rippenartigen Erhöhungen 11 gebildete Übermaß des Schweißteils 1 die gegenüberliegenden Wandteile 2,3 des Hohlkammerprofils nach außen gedrückt werden, wobei die dadurch erfolgende Aufweitung der Hohlkammer die Spannungsbildung in den Wandteilen 2,3 des Hohlkammerprofils bewirkt, welche durch den Schweißvorgang wieder aufgehoben wird. Der durch die bestehenden Abmessungsunterschiede zwischen dem Grundkörper 1 und der lichten Weite des Hohlkammerprofils bestehende Spalt 6 ist in F i g. 1 durch die gestrichelte Linie dargestellt.In Fig. 1, the base body 1 of the welding part is kept square in cross section. On every outside Axially extending, rib-like elevations 11 are formed on the circumferential surface of the base body 1, which cover the respective circumferential surface in their entire length. The illustrated embodiment illustrates the way in which the excess formed by the rib-like elevations 11 of the Welding part 1, the opposite wall parts 2,3 of the hollow chamber profile are pressed outwards, the widening of the hollow chamber which takes place as a result, the formation of tension in the wall parts 2.3 of the hollow chamber profile, which is canceled again by the welding process. Due to the existing dimensional differences between the base body 1 and the clear width of the hollow chamber profile existing gap 6 is shown in FIG. 1 represented by the dashed line.
Das Schweißteil 1 besitzt an einer seiner Stirnflächen einen Ansatz 4, der in der in F i g. 2 dargestellten Ausführungsform mit sägezahnähnlichen Rillen umlaufend ausgebildet ist. Dieser Ansatz 4 ist gleichzeitig mit der Herstellung des Schweißteils 1 angeformt. Mit dem Ansatz 4 sollen nach Durchführung des Schweißvorganges andere Profile, die in der Zeichnung nicht dargestellt sind und nicht den Gegenstand der Erfindung bilden, verbunden werden.On one of its end faces, the welding part 1 has a projection 4 which, in the form shown in FIG. 2 shown Embodiment is formed circumferentially with sawtooth-like grooves. This approach 4 is simultaneous integrally formed with the production of the welding part 1. With approach 4, after implementation the welding process other profiles that are not shown in the drawing and not the object of the invention are connected.
An Stelle des Ansatzes 4 kann in das Schweißteil auch eine Ausnehmung eingebracht sein, welche beispielsweise mit einem Gewinde versehen ist. Auf diese Weise können Ditteile in das Schweißteil z. B. eingeschraubt werden. Es sind hier alle bekannten Verbindungsmittel und Verbindungsarten denkbar, und die beschriebenen Ansätze und Gewindeausnehmungen sind lediglich beispielhaft gebraucht.Instead of the projection 4, a recess can also be made in the welding part, which for example is threaded. In this way, parts can be in the welded part z. B. be screwed in. All known connection means and connection types are conceivable here, and the approaches and thread recesses described are only used as examples.
An der dem Ansatz 4 abgewandten Stirnfläche des Schweißteils sind die Ränder 5 abgeschrägt darge-On the end face of the welding part facing away from the extension 4, the edges 5 are shown beveled.
stellt. Diese Abschrägung 5 dient dem besseren Einführen der Schweißteile in die Hohlkammerprofile.represents. This bevel 5 is used to better introduce the welded parts into the hollow chamber profiles.
Die in der Zeichnung dargestellte Ausführung des Schweißteils ist lediglich beispielhaft gewählt und stellt keine Beschränkung der Merkmale der Erfindung auf diese Ausführungsform dar. Es wird insbesondere betont, daß das Schweißteil jede beliebige äußere Form aufweisen kann, soweit diese Form dem beschriebenen Vorgang des Ultraschall-Verschweißens in Hohlkammerprofilen dienlich ist. Neben den geschilderten rippenartigen Erhöhungen, welche in axialer oder radialer Form an den äußeren Umfangsflächen des Grundkörpers des Schweißteils angeordnet sein können, können diese Erhöhungen darüber hinaus z.B. punktförmig, noppenförmig, pilzförmig usw. geformt sein, Grundvoraussetzung ist auch hier, daß die gewählte Form der Ultraschall-Verschweißung dienlich ist.The design of the welded part shown in the drawing is selected only as an example does not represent a limitation of the features of the invention to this embodiment. It is particularly emphasizes that the welding part can have any external shape, as far as this shape the described process of ultrasonic welding in hollow chamber profiles is useful. In addition to the described rib-like elevations, which in axial or radial form on the outer circumferential surfaces the base body of the welding part can be arranged, these elevations can above in addition, e.g. be point-shaped, knob-shaped, mushroom-shaped, etc. that the chosen form of the ultrasonic welding is useful.
Es liegt auch innerhalb des Rahmens der Erfindung, die Erhöhungen nicht — wie beschrieben — am Schweißteil anzuordnen, sondern an den betreffenden Innenwandungen der Hohlkammerprofile und die Schweißteile mit glatter Oberfläche in die so gebildeten Aufnahmeräume einzusetzen. Die Anordnung der in einem solchen Fall in der Regel längsverlaufenden rippenartigenErhöhungenkaan während des Extrusionsvorgangs, mit dem das Hohlkammerprofil geformt wird, erfolgen.It is also within the scope of the invention that the elevations not - as described - to be arranged on the welded part, but on the relevant inner walls of the hollow chamber profiles and insert the welded parts with a smooth surface in the receiving spaces thus formed. The order the rib-like elevations usually running longitudinally in such a case during of the extrusion process with which the hollow chamber profile is formed.
Mit der Erfindung wird es erstmals möglich, in Hohlprofile kompakte Schweißteile im Wege des Ultraschall-Schweißverfahrens in einem einzigen Verfahrensgang derart einzufügen, daß eine feste Verschweißung ohne das Auftreten von optisch nachteiligen Oberflächenmarkierungen erreicht wird. Darin liegt die besondere wirtschaftliche Bedeutung des Verfahrens begründet.With the invention it is possible for the first time, compact welded parts in hollow profiles by way of Ultrasonic welding process to insert in a single process so that a solid Welding is achieved without the appearance of visually disadvantageous surface markings. This is the reason for the particular economic importance of the process.
Hierzu 1 Blatt Zeichnungen 1 sheet of drawings
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722216745 DE2216745B1 (en) | 1972-04-07 | 1972-04-07 | PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESS |
| GB1673173A GB1417278A (en) | 1972-04-07 | 1973-04-06 | Joining plastics materials by ultrasonic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722216745 DE2216745B1 (en) | 1972-04-07 | 1972-04-07 | PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2216745A1 DE2216745A1 (en) | 1973-02-01 |
| DE2216745B1 true DE2216745B1 (en) | 1973-02-01 |
Family
ID=5841259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722216745 Withdrawn DE2216745B1 (en) | 1972-04-07 | 1972-04-07 | PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESS |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2216745B1 (en) |
| GB (1) | GB1417278A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323980A1 (en) * | 1975-09-12 | 1977-04-08 | Dynamit Nobel Ag | PROCESS FOR MANUFACTURING CARTRIDGE SLEEVES |
| DE4401266A1 (en) * | 1994-01-18 | 1995-07-20 | Branson Ultraschall | Method and device for producing a plastic part provided with a textile covering |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK153674C (en) * | 1985-03-25 | 1988-12-27 | Nunc As | PROCEDURE FOR MANUFACTURING A PLASTIC CONTAINER |
-
1972
- 1972-04-07 DE DE19722216745 patent/DE2216745B1/en not_active Withdrawn
-
1973
- 1973-04-06 GB GB1673173A patent/GB1417278A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323980A1 (en) * | 1975-09-12 | 1977-04-08 | Dynamit Nobel Ag | PROCESS FOR MANUFACTURING CARTRIDGE SLEEVES |
| DE4401266A1 (en) * | 1994-01-18 | 1995-07-20 | Branson Ultraschall | Method and device for producing a plastic part provided with a textile covering |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2216745A1 (en) | 1973-02-01 |
| GB1417278A (en) | 1975-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69625894T2 (en) | METHOD FOR JOINING PLASTIC RESIN PANELS | |
| DE2647715A1 (en) | CORNER CONNECTION FOR A FRAMEWORK FORMED FROM HOLLOW PLASTIC PROFILES AND A METHOD FOR MANUFACTURING IT | |
| DE2603710A1 (en) | METHOD OF MANUFACTURING CARTRIDGE CASES | |
| DE7821340U1 (en) | Plate-shaped layer material made of interconnected layers | |
| EP0077898B1 (en) | Methode for placing a conduit of pipes in the ground by pushing and pipe for use in such a method | |
| DE10330431B3 (en) | welder | |
| DE3206677C1 (en) | Process for the production of ring-shaped seals | |
| DE102006003942A1 (en) | Method for ultrasonic welding and building module, in particular motor vehicle door module | |
| EP2942109B1 (en) | Device for creating joints between angled components | |
| DE2348607C2 (en) | Thermal welding process for connecting two plastic walls to the front | |
| DE2216745B1 (en) | PROCESS FOR JOINING PLASTIC PARTS USING ULTRASONIC AND WELDED PART TO PERFORM THE PROCESS | |
| DE2657542C2 (en) | Component corner of high rigidity, its use and process for its manufacture | |
| DE102018206726A1 (en) | Adapter for plates, adapter system, method for attaching adapters and use of an adapter | |
| DE1160048B (en) | Rectangular waveguide and process for its manufacture | |
| EP3489565B1 (en) | Connection device | |
| DE102018127251B3 (en) | CONNECTION PROFILE AND METHOD FOR PERMANENTLY JOINING TWO PANELS AND SYSTEM WITH A CONNECTION PROFILE | |
| DE19817638A1 (en) | Sealing process for cavity between annular wall and tube end part | |
| DE68904456T2 (en) | JOINING THERMOPLASTICALLY COATED STEEL TUBE SECTIONS. | |
| DE69100542T2 (en) | Socket pipe made of plastic and manufacturing process therefor. | |
| DE2847023C2 (en) | Mirror pressure welding device for connecting plastic profiles | |
| CH514092A (en) | Pipe connections between two concrete pipes | |
| DE9312859U1 (en) | Foldable injection packer for hole closures in masonry or the like. | |
| EP3441660B1 (en) | Connection device | |
| DE1261715B (en) | Elbow with a rectangular cross-section and the method and apparatus for producing the same | |
| DE2500676A1 (en) | CORNER JOINT IN A METAL PROFILE FRAME FOR DOORS, WINDOWS OR THE SAME AND PROCESS AND DEVICE FOR THEIR PRODUCTION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EGA | New person/name/address of the applicant | ||
| 8339 | Ceased/non-payment of the annual fee |