A kind of automobile engine cover and processing method
Technical field
The present invention relates to field of automobile, more particularly to a kind of automobile engine cover and processing method.
Background technique
Existing automobile engine cover is all the double-deck sheet metal structural, including inner panel and outside plate, and the edge of inner panel and outside plate passes through
Wrapping process is fixed together, and is coated with folding adhesive at the pressing of inner and outer plates, will be interior after making flanging adhesive curing by high temperature drying
Outside plate bonding, to obtain total member of desired stiffness.The top view of bonnet as shown in Figure 1, the inner and outer plates of bonnet packet
Side structural schematic diagram is as shown in Figure 2.Existing bonnet and its process have the following problems:
Before folding adhesive is uncured in wrapping process, the frictional force of inner and outer plates bound edge can not prevent opposite between inner and outer plates
It is mobile, so that causing a degree of torsional deformation in engine cap assembly part flow process, cause hood and two
The gap of flank daughter board is uneven.And in order to ensure total member before baking will not cause precision to change because process flows,
Existing manufacturing enterprise generallys use two kinds of techniques: one for bound edge, conduplication side position is locally dried simultaneously, two for after bound edge in flap
Position increases spot welding or CO2 weldering.The first technology investment higher cost is unfavorable for small lot production;Second of technique increases production
Cost and energy-saving and emission-reduction requirement is not met.
Existing bound edge mode, directly influences pack edge presentation quality.It is limited by the state of the art, meeting when bound edge
It cannot be accurately controlled the sideline of bound edge and the presentation quality of pack edge due to various reasons, the later period is caused to return appearance
It repairs and the adjustment repeatedly in adjustment line to gap, seriously affects productive temp, be unfavorable for producing in batches, and increase production cost.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of automobile engine cover, for solving bonnet in the prior art
The problem of inner panel can relatively move with outside plate, influence product appearance quality.
The present invention is implemented as follows:
A kind of automobile engine cover, including being set to the outside plate of outer surface and being set to the inner panel of inner surface, the outside plate with
The opposite two sides of fender separately down and bend inwards, and are formed in the side of bonnet opposite with fender convex
Rib;
The edge of the inner panel bends downward and coats outer plate edge to form bound edge from bottom to up, is coated in pack edge
Folding adhesive, folding adhesive, which applies, to be set between inner panel and outside plate.
Further, sealant is coated in the end face of interior edges of boards edge.
Further, the outside plate and fin are by stamping die continuous punch forming.
Further, the top of the fin is plane and parallel with corresponding fender medial surface.
In order to solve the above technical problems, another technical solution provided by the invention are as follows:
A kind of automobile engine cover processing method, comprising:
Bonnet inner panel and outside plate blanking are carried out according to the shape of automobile engine cover and size;
Punching press is carried out with outer plate panel to the inner panel panel that blanking obtains using inner panel stamping die and outside plate stamping die
Molding when punching press outer plate panel, makes the two sides of outer plate panel separately down and bends inwards, the side of bonnet formed with
Fender opposite fin when punching press inner panel panel, bends downward the two sides of inner panel panel;
Stamping forming outside plate and inner panel consistency from top to bottom are placed, and are coated with folding adhesive at the edge of inner panel or outside plate;
Bound edge is carried out to outside plate and inner panel edge using taping machine, bends downward the edge of inner panel and from bottom to up will be outer
Edges of boards edge coats to form bound edge.
It further, further include the inner panel panel and outer plate panel obtained to blanking before carrying out punch forming step
Edge polish, the burr that is formed when removing blanking.
It further, further include being coated with sealant in the end face of interior edges of boards edge after inner panel and outside plate bound edge.
Further, when carrying out outer plate panel punch forming, make the top plane of fin and with corresponding fender
Medial surface is parallel.
The invention has the benefit that
The present invention, which is molded, forms corresponding with fender fin in the side of bonnet outside plate, and inner panel and
The pack edge of outside plate is then no longer directly corresponding with fender, and mold members contour accuracy can achieve ± 0.25mm, is higher than bound edge
± 0.5mm, the influence which reduces the error of bound edge to parting improves the essence of parting between bonnet and fender
Degree;And it is that Y-direction limits between the inner panel and outside plate of this bonnet, also can be very good to limit before folding adhesive is uncured
The movement of Y between inner and outer plates, to more improve the parting precision between bonnet and fender.Bonnet of the present invention after tested
Gap between fender can accomplish 3mm, and the parting than common bound edge form reduces 1-1.5mm, can greatly improve this
The presentation quality and precision at place.
Detailed description of the invention
Fig. 1 is the top view of passenger car bonnet in the prior art;
Fig. 2 is the binding structure schematic diagram of bonnet in the prior art;
Fig. 3 is the binding structure schematic diagram of bonnet in embodiment of the present invention;
Fig. 4 is the enlarged view of part A in Fig. 3;
Fig. 5 is the flow diagram of embodiment of the present invention automobile engine cover processing method.
Label declaration:
1, bonnet;2, fender;3, the parting between bonnet and fender;11, outside plate;12, inner panel;13, flanging
Glue;14, sealant;111, fin.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
Please refer to Fig. 3 and Fig. 4, a kind of automobile engine cover of embodiment of the present invention, the i.e. hood of automobile, the engine
Lid 1 includes the outside plate 11 of bonnet and the inner panel 12 of bonnet, and outside plate 11 and the edge of inner panel 12 are wrapped using wrapping process
Side forms engine cap assembly part.Wherein, the two sides of the outside plate 11 separately down and bend inwards, in the side shape of bonnet
At the fin 111 with fender 2 with respect to (parallel);The outside plate 11 and fin 111 are one time punching molded by stamping die.
The edge of the inner panel 12 bends downward and coats 11 edge of outside plate to form bound edge to supreme, applies in pack edge
Equipped with folding adhesive 13, folding adhesive 13, which applies, to be set between inner panel and outside plate.
Since fin 111 is protruded to side surface direction level, from the appearance when, bound edge position is not just in appearance
Locate (can't see).The face corresponding with fender 2 of present embodiment bonnet 1 is one section of fin that die reshaping comes out, packet
Directly not corresponding with fender at side, general mold members profile tolerance can achieve ± 0.25mm, higher than ± the 0.5mm of bound edge,
Influence which reduces the error of bound edge to parting 3, and such binding structure, since inner and outer plates are all toward lower flange, packet
The flange of inner and outer plates is just in Y-direction (automobile lateral) fitting before side, and being equivalent between inner and outer plates is that Y-direction limits, so
It also can be very good the movement of Y between limitation inner and outer plates before folding adhesive is uncured, to more improve hood and the wing
3 precision of parting between daughter board.Gap between hood and fender through analyzing such form can accomplish 3mm, than
The parting of common bound edge form reduces 1-1.5mm, can greatly improve presentation quality and precision herein.In present embodiment,
Outer plate edge is encased using the technique of the upward bound edge of inner panel, reduces the enforcement difficulty of wrapping process, improves bound edge precision.
In order to improve the leakproofness of inner panel Yu outside plate pack edge, sealant is coated in the end face of interior edges of boards edge.
Further, in the present embodiment, the top of the fin 111 be plane and with corresponding fender medial surface
In parallel.The precision of trapezoidal icepro is more easily controlled than taper icepro for from production technology, and trapezoidal icepro control is a face, and
Taper is one line of control.
And in other embodiments, point is also possible at the top of the fin, i.e. the fin is taper rib, rather than
Trapezoidal rib.
Referring to Fig. 5, another embodiment provided by the invention is, a kind of processing method of automobile engine cover comprising:
Blanking carries out bonnet inner panel and outside plate blanking according to the shape of automobile engine cover and size;
Polishing, polishes to the edge of inner panel panel and outer plate panel that blanking obtains, the hair formed when removing blanking
Thorn;
Punch forming, the inner panel panel and outer plate panel that blanking is obtained using inner panel stamping die and outside plate stamping die
Punch forming is carried out, when punching press outer plate panel, makes the two sides of outer plate panel separately down and bends inwards, in the side of bonnet
Face forms the fin opposite with fender, when punching press inner panel panel, bends downward the two sides of inner panel panel;
Folding adhesive is beaten, stamping forming outside plate and inner panel consistency from top to bottom are placed, and is coated at the edge of inner panel or outside plate
Folding adhesive;
Bound edge carries out bound edge to outside plate and inner panel edge using taping machine, make the edge of inner panel bend downward and to
On outer plate edge is coated to form bound edge;
It breaks sealant and is coated with sealant in the end face of interior edges of boards edge.
In present embodiment, outer plate edge is encased using the technique of the upward bound edge of inner panel, reduces the reality of wrapping process
Difficulty is applied, bound edge precision is improved.
The processing method of this automobile engine cover forms the inside simultaneously downward bending in the two sides of bonnet outside plate to lateral projections
And the fin parallel with fender parting 3, thus make the bound edge of inner panel and outside plate not in appearance, and the formed precision of mold
Much larger than the precision of wrapping process, to substantially increase the alignment accuracy of bonnet Yu fender parting 3.
In the present embodiment, when carrying out outer plate panel punch forming, make the top plane of fin and with it is corresponding
Fender medial surface is parallel.
In other embodiments, point is also possible at the top of the fin, i.e. the fin is taper rib, rather than terraced
Shape rib.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.