CN1971007A - Binding-packaging process for triple purifier of automobile - Google Patents

Abstract

The invention discloses a seizing and packaging technology for three-way cleaner of automobile. Technology procedures are 1) drumming; 2) loading; 3) seizing; 4) necking and experiment for axial thrust; 5) welding; 6) sealing test. The invention is provided with following merits: 1, by seizing way the gap of catalyst converter shell is not important, according to the tolerance of carrier and by adjusting the seizing force the gap between the carrier and the catalyst converter is adjusted automatically so as to control the compression density of expansion gasket in 0.8-1.2g/cm3; 2, seizing force, which is a pair of soft force, arises from the lowest point to setting value to ensure the carrier stress evenly, meanwhile after the seizing is finished the vibration with certain amplitude generated makes stress concentration generated in seizing scatter evenly.

Description

Binding-packaging process for triple purifier of automobile

Technical field

The present invention relates to a kind of triple purifier of automobile packaging technology.

Background technique

The encapsulation main technical requirements of triple purifier of automobile is to prevent carrier play in cylinder-shaped catalyst converter shell, thereby on carrier, be tied with one deck inflated insert in order to immobilization carrier, make not play in the catalyst converter shell of carrier, mainly be to control the pressed density of inflated insert between carrier and the catalyst converter shell well, the inflated insert pressed density is too big, carrier will break when encapsulation, otherwise, the inflated insert pressed density is too little, carrier just has loosening in the catalyst converter shell, after automobilism a period of time, carrier is loosening to cause carrier to break, cause whole purifier to lose efficacy, thereby the encapsulation of triple purifier of automobile mainly launch round the pressed density of inflated insert.And at present, the filled type technological method is generally adopted in the encapsulation of cylindrical shape triple purifier of automobile, its manufacturing process is: be welded into the catalyst converter shell after straight coiled sheet is become cylindrical shape, then carrier and liner are bandaged with adhesive tape, with oil hydraulic press carrier is pressed in the catalyst converter shell, weld two end cap then, do air tightness test at last.There is following technical problem in this technological method: 1, because the catalyst converter shell exists certain and tolerance in manufacture process, and also there is certain tolerance in carrier in manufacture process, if the upper deviation of catalyst converter shell matches with the lower deviation of carrier, can cause the pressed density of inflated insert very few, cause carrier loosening; If the lower deviation of catalyst converter shell matches with the upper deviation of carrier, then the pressed density of inflated insert is too big, cause carrier when encapsulation, to break, therefore this technology is quite high to the tolerance of catalyst converter shell and carrier, when encapsulation, to adopt the method for apolegamy to assemble,, but in large batch of production, tend to because of controlling not tight with the pressed density of control inflated insert, careless slightly, will cause the generation of package quality accident.2, this kind packaging technology is to adopt oil hydraulic press that carrier is pressed in the catalyst converter shell, causes carrier at catalyst converter shell internal stress skewness, and local stress concentration is arranged, might be too concentrated because of localized stress in running, and cause carrier to break.

Summary of the invention

The purpose of this invention is to provide a kind of yield rate height, the packaging technology of the triple purifier of automobile that the life-span is long.

The objective of the invention is to realize in the following way: a kind of binding-packaging process for triple purifier of automobile, its process step is as follows:

1), reel: straight coiled sheet is become the catalyst converter shell;

2), load: carrier is put into the catalyst converter shell with the inflated insert wrapping;

3), binding: the catalyst converter shell that will install liner and carrier tightens up under the effect of bundling belt, carries out dither then, and the power that binding is produced is evenly distributed, and with spot welding the catalyst converter enclosure interface is fixed;

4), reducing and do end thrust test: reducing is carried out at catalyst converter shell two ends handled, and do the axial displacement test, check the loosening situation of carrier;

5), welding: cone is welded on the reducing face of catalyst converter shell two ends, and the catalyst converter enclosure interface is directly welded, become the triple purifier of automobile finished product;

6), air tightness test: the triple purifier of automobile finished product is done air tightness test, qualified position marks are known.

The present invention has following beneficial effect: the mode that 1, adopts binding, catalyst converter shell gap recedes into the background, by the adjustment of seizing force, according to the tolerance of carrier, can adjust the gap between carrier and the catalyst converter shell automatically, make the inflated insert pressed density be controlled at 0.8-1.2g/cm ³Between; 2, seizing force is one group of soft force, is elevated to the seizing force of setting gradually from minimum point, has guaranteed that carrier stress is even, and after binding finished simultaneously, the vibration that produces certain amplitude was concentrated the stress that produces and is uniformly dispersed when binding.

Description of drawings

Fig. 1 is the structural representation of the triple purifier of automobile produced of the present invention;

Fig. 2 is a process flow diagram of the present invention;

Embodiment

As shown in Figure 1, a kind of triple purifier of automobile comprises catalyst converter shell 1, and carrier 3 usefulness inflated insert 2 wrapping plugs are in catalyst converter shell 1, and catalyst converter shell 1 two ends are welded with cone 4, the 1 two ends reducing of catalyst converter shell.

As shown in Figure 2, a kind of binding-packaging process for triple purifier of automobile, its process step is as follows:

1), reel: straight coiled sheet is become the catalyst converter shell;

2), load: carrier is put into the catalyst converter shell with the inflated insert wrapping;

3), binding: the catalyst converter shell that will install liner and carrier tightens up under the effect of bundling belt, carries out dither then, and the power that binding is produced is evenly distributed, and with spot welding the catalyst converter enclosure interface is fixed;

4), reducing and do end thrust test: reducing is carried out at catalyst converter shell two ends handled, and do the axial displacement test, check the loosening situation of carrier;

5), welding: cone is welded on the reducing face of catalyst converter shell two ends, and the catalyst converter enclosure interface is directly welded, become the triple purifier of automobile finished product;

6), air tightness test: the triple purifier of automobile finished product is done air tightness test, qualified position marks are known.

Claims (1)

1, a kind of binding-packaging process for triple purifier of automobile, its process step is as follows:

1), reel: straight coiled sheet is become the catalyst converter shell;

2), load: carrier is put into the catalyst converter shell with the inflated insert wrapping;

3), binding: the catalyst converter shell that will install liner and carrier tightens up under the effect of bundling belt, carries out dither then, and the power that binding is produced is evenly distributed, and with spot welding the catalyst converter enclosure interface is fixed;

4), reducing and do end thrust test: reducing is carried out at catalyst converter shell two ends handled, and do the axial displacement test, check the loosening situation of carrier;

5), welding: cone is welded on the reducing face of catalyst converter shell two ends, and the catalyst converter enclosure interface is directly welded, become the triple purifier of automobile finished product;

6), air tightness test: the triple purifier of automobile finished product is done air tightness test, qualified position marks are known.

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