CN102490356A

CN102490356A - Welded bar structure of engine plastic intake manifold

Info

Publication number: CN102490356A
Application number: CN2011103883563A
Authority: CN
Inventors: 刘纯; 鄢烈; 罗昆; 池诚; 陈洪文
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2012-06-13

Abstract

The invention discloses a welded bar structure of an engine plastic intake manifold, comprising an upper welded bar and a lower welded bar, wherein the upper welded bar is arranged on the upper sheet of the plastic intake manifold, and the lower welded bar is arranged on the lower sheet of the plastic intake manifold. The welded bar structure is characterized in that: the lower end of the lower welded bar is arc-shaped and is wider than the lower welded bar; material blocking edges are arranged on the lower welded bar and the edge of the lower end; the upper end of the upper welded bar is arc-shaped and is wider than the upper welded bar; the upper sheet and the lower sheet of the plastic intake manifold are correspondingly welded through the frictional vibration of a welding machine. In the invention, as the end of the disconnected welded bar is wider than the other parts of the welded bar and the end of the welded bar is approximately arc-shaped, the welding intensity of the ends of the welded bar is enhanced; due to the material blocking edges arranged on the lower welded bar on the lower sheet of the plastic intake manifold and on the edge of the lower end, the welding flash is prevented from entering air flue, and the influence on the properties of the plastic intake manifold is avoided.

Description

A kind of plastics air inlet manifold branch of engine welding muscle structure

Technical field

The present invention relates to automotive engine component, be specifically related to a kind of plastics air inlet manifold branch of engine welding muscle structure.

Background technology

At present, for improving the engine charge charging efficiency, under all operating modes of engine, increase the air inflow of air, the inhomogeneities of each the cylinder air amount of reduction entering of trying one's best, the increasing employing plastic composite of the design of inlet manifold.The inlet manifold of plastic composite is compared with traditional aluminum alloy air inlet manifold, and inner wall surface thereof is smooth, helps increasing air inflow; The free degree of design shape is big; Can easily design longer air flue, with in improving, low speed torque, cost is than plurality of advantages such as aluminum alloy air inlet manifold are low.But for the plastic air intake manifold that adopts the moulding of vibration friction-welding technique; The weld strength of welding muscle possibly can't satisfy the anti-burst requirement of inlet manifold after welding; Particularly for the welded welding muscle of breakaway-element, the terminal weld strength of welding muscle almost can't meet design requirement.

Summary of the invention

The purpose of this invention is to provide a kind of plastics air inlet manifold branch of engine welding muscle structure; Can solve the not enough problem of the terminal weld strength of plastic air intake manifold breakaway-element welding muscle; Improve the weld strength of whole plastic air intake manifold, and then improve the anti-burst ability of inlet manifold.

A kind of plastics air inlet manifold branch of engine welding muscle structure of the present invention; Comprise and be located at going up the welding muscle and being located at the following welding muscle on the sheet under the plastic air intake manifold on the plastic air intake manifold last slice; It is characterized in that: the lower end of the said muscle of welding down is circular-arc; The width of lower end is provided with the backgauge limit greater than the width that welds muscle down at the edge that welds muscle and lower end down; The said last end of going up the welding muscle is circular-arc, and the width of last end is greater than the width of last welding muscle.

Described a kind of plastics air inlet manifold branch of engine welding muscle structure, sheet is through the corresponding welding of frictional vibration of bonding machine under its said plastic air intake manifold last slice and the plastic air intake manifold; Go up that the following welding muscle on the sheet is corresponding under welding muscle and the plastic air intake manifold welds together on the said plastic air intake manifold last slice, on weld that the terminal and following lower end that welds muscle of going up of muscle is corresponding to weld together.

Beneficial effect of the present invention: because that the terminal width of breakaway-element welding muscle welds other position of muscle is wide, the terminal approximate circle arc structure of welding muscle; Compare with enclosed welding muscle, the terminal width of the welding muscle of disconnection becomes big, thereby has improved the terminal weld strength of welding back welding muscle; Because the following welding muscle on the sheet and the edge of lower end are provided with the backgauge limit under plastic air intake manifold; After plastic air intake manifold last slice welding; Weld flash is overflow in welding the backgauge groove of forming in muscle and backgauge limit down; Stoped weld flash to get into air intake duct, avoided the plastic air intake manifold Effect on Performance.

Description of drawings

Fig. 1 is the sketch map of enclosed construction welding muscle;

Fig. 2 is the sketch map of disrupted configuration welding muscle;

Fig. 3 is the structural representation of the welding of sheet down muscle of the present invention;

Fig. 4 be of the present invention last slice the welding muscle structural representation;

Fig. 5 is Fundamentals of Welding figure of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is further described.

Fig. 1 is the structural representation of closed welding muscle.Among the figure: 1 is the welding muscle, is interconnective between welding muscle and the welding muscle, does not have the structure of breaking off.

Fig. 2 is the structural representation of breakaway-element welding muscle.Among the figure:

welding muscle

2 and 5 is for what be interconnected, and it is closed welding muscle; The end that welds

muscle

3 and 4 breaks off, and is not connected with any welding muscle, and this is referred to as breakaway-element welding muscle.Usually, if when the terminal width of breakaway-element welding muscle is identical with other position, the weld strength of welding muscle end can be low than other position; During explosion, inlet manifold can at first be split at disconnection end points place.

Referring to Fig. 3 and Fig. 4, a kind of plastics air inlet manifold branch of engine welding muscle structure comprises being located at going up welding muscle 9 and being located at the following welding muscle 7 on the sheet B under the plastic air intake manifold on the plastic air intake manifold last slice A;

The lower end 8 of the said muscle 7 of welding down is circular-arc, and the width of lower end 8 is provided with backgauge limit 6 greater than the width that welds muscle 7 down at the edge that welds muscle 7 and lower end 8 down; The said end 10 of going up of going up welding muscle 9 is circular-arc, and last terminal 10 width is greater than the width of last welding muscle 9.

Referring to Fig. 5, sheet B is through the corresponding welding of frictional vibration of bonding machine under said plastic air intake manifold last slice A and the plastic air intake manifold; Go up under welding muscle 9 and the plastic air intake manifold that the following welding muscle on the sheet B 7 is corresponding to weld together on the said plastic air intake manifold last slice A, on weld going up of muscle 9 and terminal 10 correspondingly with the following lower end that welds muscle 78 weld together.

Under weld muscle 7 and be welded to each other together with last welding muscle 9, on weld going up of muscle and terminal 10 correspondingly with the lower end of welding muscle down 8 weld together, assurance is with the weld strength of whole inlet manifold, and can improve the anti-burst ability of inlet manifold.

Claims

1. a plastics air inlet manifold branch of engine welds the muscle structure; Comprise and be located at going up welding muscle (9) and being located at the following welding muscle (7) on the sheet under the plastic air intake manifold (B) on the plastic air intake manifold last slice (A); It is characterized in that: the said lower end (8) of welding muscle (7) down is circular-arc; The width of lower end (8) is provided with backgauge limit (6) greater than the width that welds muscle (7) down at the edge that welds muscle (7) and lower end (8) down; Said terminal (10) of going up welding muscle (9) are circular-arc, and the width of last terminal (10) is greater than the width of last welding muscle (9).

2. a kind of plastics air inlet manifold branch of engine welding muscle structure according to claim 1, it is characterized in that: sheet (B) is through the corresponding welding of frictional vibration of bonding machine under said plastic air intake manifold last slice (A) and the plastic air intake manifold; Go up that the following welding muscle (7) on the sheet (B) is corresponding under welding muscle (9) and the plastic air intake manifold welds together on the said plastic air intake manifold last slice (A), on weld the going up of muscle (9) terminal (10) and weld together with the following lower end (8) that welds muscle (7) is corresponding.