DE2642057C2 - Method for connecting two pipe ends that are plugged into one another - Google Patents

Description

a vent of the joint area 21 into the interior of the tube 14, whereby any in the solder Empty spaces or pores are avoided and eliminated.

If venting of the clearance or gap area 22 is to be possible when the connecting area 21 is immersed, it is necessary that the axis of the assembled end sections 16 and 20 be kept at an angle with respect to the horizontal plane determined by the surface of the soldering element 6 will. The axis of the connection area 21 is largely perpendicular to the surface of the solder. It should be noted that any other angle may be used that will allow the solder to rise into and through path 26 to fully coat connector area 21, .n .. during the open End 27 of the Endabscr ^: its <-j is hooked over the surface of the solder.

From Fig. 1 it can be seen that the tube 12 is bent with the section 20 to a U-shaped configuration. and after the connection process has been completed, it is possible to simply reshape 7U to a suitable predetermined configuration.

In Fig. 6 shows a second embodiment, in which similar parts are denoted by the same reference numerals as in the first embodiment. In this embodiment, a pair of tubular members 12 'and 12 ^{f / are} connected to a common member 14 which includes end sections 16' and 16 "which are appropriately sized to receive end sections 20 'and -20". The connection is completed in the same manner as previously for the embodiment of FIG. ί to 5 has been described.

1 sheet of drawings

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Claims (1)

1 2 Connection establishment according to the present invention Claim: generally designated with the reference number 2 and in one Ultrasonic vessel 4 arranged, the molten process for joining two nested solder 6 contains the ultrasonic energy can through kender pipe ends, in which in the space between 5 electrically excited transducers are generated, which are harmful Pipe ends of solder is placed and the table shown at 8 and along the outer surface of the table outer pipe end with inwardly protruding buckles in the bottom wall of the vessel 4 arranged side by side Centering of the pipe ends are net to one another. will see, characterized in that the connection structure 2 has a with a small one after joining the pipe ends and before 10 diameter formed aluminum pipe casting 12, after introducing the solder, the outer tube end which can be a capillary tube usually found in is used from the outside in almost punctiform areas after cooling systems, and one with a larger one is pressed inside. Diameter formed aluminum tubular member 14, which is a standard pipe used in cooling systems 15 line can be. According to FIGS. 2,3 and 5 can do that Tube 14 have a reduced end portion 16 which adjoins the open end 18 of the inner The invention relates to a method of forming part of the end portion 20 of the joint Connecting two pipe ends plugged into one another, in the case of pipe 12, it is inserted into the end section 16 of the pipe 14 the solder 20 is inserted into the space between the pipe ends to produce one shown in FIG. 5 generally brought in with the and to create the outer end of the pipe with the connection area identified by reference number 21 protruding bumps for the purpose of centering the tube. According to the present embodiment, the ends is provided to each other. finding the inside diameter 16 is 7.87 mm, while In a known method of this type (DE-OS rend the outer diameter of the end section 20 24 14 966), before joining the tube, make 25 635 mm, with a radial spiei 22 (Fig. 4) ends in the outer end of the pipe inside the Buckei remains. 0.76 mm. It was determined that a works, this in such a way that by means of cutting edges material radial play of 0.254 to 132 mm with respect to an image Outer pipe end displaced or leak-free connections between aluminum pressed inwards will. When inserting the inner tubular pipe members according to the present invention, this is useful in the lesser end of the pipe it can happen that 30 is moderate the inner end of the pipe externally damaged by the bosses Means are provided to ensure that the will. In addition, the Hc position of the connection predetermined radial play 22 between the ineitianderdung is relatively complex is pushed end sections 16 and 20 over the The invention is based on the object, the entire scope is essentially the same, as it is from to carry out the aforementioned method in such a way that 35 F i g. 4 can be seen. For this purpose there is one in the end Damage to the inner pipe end as much as section 16 of the outer pipe 14 a multitude of is avoided possible and that it is provided more simply than the holding or centering projections 24, is known. The projections 24 extend up to an engagement This object is achieved according to the invention in that the outer surface of the Er.dabschnitts 20 is radially inserted after joining the pipe ends and before 40 downwards. around the end portion 20 in the aforementioned manner the introduction of the solder to effectively center the outer pipe edge relative to the end portion 16, of which on the outside in almost punctiform areas towards the radial play 22 between the end sections 16, is pressed inside. 20 is the same over the entire circumference. Damage to the inner end of the pipe is the result. The projections 24 are not practically possible if one disregards the fact that 43 push the end portions 16 and 20 through somehow inner pipe end possibly formed in the region of the bosses before suitable shaping means 25 which are shown in experiences slight indentations. In addition, it becomes a thread. 3 and 4 are shown schematically. The researchers is, the outer pipe end point-like inward mungsmiuel 25 are dimensioned so that they after to press than by means of cut edges material of the outer centering of the end portion 20, the projections 24 rare To displace the pipe end. 50 diai expand or stretch inwards to the wall In the following, the invention will be easily deformed or into this with reference to the end section 20 the drawings explained in more detail. It shows intervening so that the end sections 16 as well as 20 and F i g. 1 in a vertical view an ultrasonic soldering device corresponding to the tubes 12 and 14 in front of and wähtelbad with a connection located therein after the end of the soldering process at a mutual relative Invention, 55 movement are prevented. F i g. 2 in a vertical section the to be connected The projections 24 grip the end portion 20 of the Limbs, so that the integrity of the side wall of the end F i g. 3 the connection in a detail of the same line section 20 and its ability, when used in the enlarged view of resisting pressures occurring in a cooling system. F i g. 4 shows a section along the line 4-4 from FIG. 3 60 hen, to be maintained. to show further details of the connection from Fig. 5 it can be seen that the axial and circumferential construction, catch-like arrangement of the projections 24 an un- Fig. Figure 5 shows details of the connection structure of the obstructed axial passage 26 in the radial gap showing section along the line 5-5 from FIG. 4 and 22 forms when immersed the composite 6 in a Sennitiansichi another embodiment 65 connection structure 2 flows into the vessel 4 dementia form of the invention with a multiple tube promise the melted solder 6 through the open bond structure. nc iindc 18 into the radial gap 22. When the connection In the drawings and in particular in FIG. I is a training structure 2 according to FIG. I aligned, surrenders