CN1025486C

CN1025486C - New-type GRP automobile body structure and its processing

Info

Publication number: CN1025486C
Application number: CN 88106442
Authority: CN
Inventors: 于耀庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-09-08
Filing date: 1988-09-08
Publication date: 1994-07-20
Anticipated expiration: 2003-09-08
Also published as: CN1040958A

Abstract

The present invention relates to a novel GRP automobile body structure which uses an integral box-shaped structure, a double-layer thin shell structure, a local reinforced honeycomb organization structure, etc. The present invention has the advantages of high intensity, high rigidity, material saving, etc. The present invention also relates to a processing technique and a mould for realizing the novel structure.

Description

New-type GRP automobile body structure and its processing

The invention belongs to auto industry field, relate to a kind of processing technology of glass-felt plastic automotive body structure.

Glass-felt plastic is a kind of composite material, and its matrix adopts unsaturated polyester or epoxy resin more, and adds the organic or inorganic fiber of fiberglass products or other kind, to increase matrix strength.This composite material has the advantage of many uniquenesses; Good mechanical property can be beautiful with the steel ratio with volume, and quality is light, is about 1/3～1/4 of steel, thereby can alleviate the deadweight of automobile greatly, to reduce oil consumption, increases capacity weight; Also having advantages such as withstanding corrosion simultaneously, is a kind of desirable material of making auto body.

In recent years, there are many producers and research institution all attempting to utilize this material auto body both at home and abroad.But because the structure of auto body and moulding more complicated all, and the modulus of elasticity of glass-felt plastic is low, and also there is some perfect inadequately place in production technology, and aborning, not only efficient is low, and quality also is difficult to guarantee, therefore is unsuitable for suitability for industrialized production.

For example: domestic once had a kind of technology (seeing patent CN85101504) to utilize polystyrene or polyurethane to make foam inner tube of a tyre model, layering thereon pastes epoxy resin fiberglass cloth (internal layer) and polyester glass fiber cloth (skin), after curing and surface treatment, promptly can be made into vehicle body.The production cycle of this technology is longer, and for example the curing of epoxy resin internal layer needs 36 hours, and the curing of polyester outer layer needs 46 hours, and therefore the production cycle of a vehicle body approximately needs about 100～150 hours, and efficient is very low.And inner tube of a tyre model is to be made by polystyrene or polyurethane foam, intensity is hanged down easily deformable very difficult assurance dimensional accuracy of products, and the last surface of the vehicle body of manual pasting, it is the surface that nature forms, its planeness and degree of finish are all lower, even by meticulous surface treatment, also inaccessible desirable effect.

Also have a kind of technology (seeing patent CN86203852U) to be: mould and the skeleton mould of making processing appearance (outside plate) in advance, then " on vehicle body mold cavity inwall, paste vehicle-body outer panel; before vehicle-body outer panel is still uncured with glass-felt plastic/composite material (FRP), paste over again give the curing that makes body framwork floor and dash shield ... " take out vehicle body again after solidifying.The characteristics of this technology are dimensional accuracy and the surface finishes that has solved vehicle body, but owing to make respectively, the intensity of single member is not high, and is easily deformable, and bonding intensity is also lower, has influence on the vehicle body integral intensity.The caused internal force of regelate can cause body distortion.Another problem is the inner and outer surface layers of curing and the fit dimension between skeleton, is difficult to be guaranteed.

The processing technology that the purpose of this invention is to provide a kind of new body structure.The characteristics of this body structure are:

(1) vehicle body that is made of uppermost layer, endosexine is by the formed double-deck thin shell structure in the covering top layer that can meet with stresses.

(2), be provided with the local celluar tissue structure of strengthening (as roof, floor etc.) between its inner and outer surface layers in the part that meets with stresses and be provided with the part of load-carrying member.

(3) after make on the inside and outside top layer of vehicle body, can make up and carry out solidifying and setting, make it to become the integral type box-structure that gets final product once-forming without " assembling ".

In order to adapt to the requirement of above-mentioned new construction, on technology and mould, have following characteristics:

(1) outer mold and inner mold all are decomposable sectional dies, and the die cavity of combination back outer mold is the profile of vehicle body, and the profile of combination back inner mold then is the die cavity of manned capsule (or machinery space, loading space cabin);

(2) uppermost layer of vehicle body is a processing and fabricating in the mold cavity outside, and endosexine processing and fabricating on inner mold forms.

(3) uppermost layer and endosexine are to make on mould separately respectively, decide program combination at once before curing by giving, and required celluar tissue is set giving fixed position, chimeric and other give embedded part, be cured processing after being combined into integral body, make vehicle body become the structure of once-forming.

The vehicle body of being made by above-mentioned processing technology will have following characteristics:

(1) one-shot forming and be that the car body that solidifies synchronously is an integral type box-structure has overcome the bonding regelate of secondary and the distortion that causes, has improved the rigidity and the intensity of vehicle body, has remedied the defective that the material property aspect exists from design.Because the modulus of elasticity of fiber glass reinforced plastics (FRP) body is low, is about 1/10 of steel, makes single-piece and assembles, and is easily deformable, is difficult to guarantee designing requirement.

(2) uppermost layer, endosexine are that processing and fabricating forms on the mould of special use, and its dimensional accuracy, surface finish, planeness all can be guaranteed by mould.

(3) by endosexine, double-deck thin shell structure that uppermost layer constituted, its top layer covering can meet with stresses, and can improve bus body strength, and can reduce material consumption.

(4) in addition, make on the model of endosexine the vehicle body endosexine, scribes suitable decorative pattern on the surface at model, can correspondingly turn on the vehicle body endosexine, as interior trim, in, low-grade car, can consider to deduct interior trim.

(5), must possess large-scale pressing equipment, traditional production patterns such as large mold of expense costliness thereby can change the production auto body because production technology provided by the present invention does not need complex apparatus.

For the present invention is further elaborated, with embodiment, it is as follows to be elaborated with reference to accompanying drawing:

Fig. 1 is the auto body outside drawing.

Fig. 2 is local structure and die drawing.

Fig. 3 is the constructional drawing of auto body load parts.

Fig. 4 is an A-A section-drawing among Fig. 3.

Be the vehicle body figure of small passenger car as shown in fig. 1, it is made up of uppermost layer (1) and endosexine (2), and the local bearing position between inside and outside top layer is equipped with celluar tissue member (3) to increase its intensity.

It shown in Fig. 2 the section-drawing of vehicle body part and mould, uppermost layer (1) is in uppermost layer mould (5), pasting the resin glass fiber cloth with layering makes, and endosexine (2) are to use to paste with quadrat method on endosexine mould (4) to form, between endosexine (2) and uppermost layer (1), need the position of reinforcement, celluar tissue member (3) by the glass steel is housed, graphic section is that the gang mould tool is sent into the situation that is heating and curing in the stove together after installing the celluar tissue member in the inside and outside top layer.

Installation site between celluar tissue member shown in Figure 3 (3) and the inside and outside top layer, celluar tissue member are vertically to be installed between the inside and outside top layer.Analyse and observe for A-A among Fig. 3 shown in Fig. 4.

Technological process is as follows:

(1) decide the suite outer mold by giving, carry out surface treatment after, paste uppermost layer, it is identical with general processing technology to paste technology;

(2) by preset program combined inner mold tool, paste the endosexine;

(3) with the required embedded part, chimeric, celluar tissue etc. of giving, be arranged at required position in the uppermost layer;

(4) place inner mold in the outer mold that is inverted together with the endosexine that is made into;

(5) on the bottom of endosexine (car bottom plate), the device celluar tissue pastes the base plate skin, and links with the vehicle body uppermost layer;

(6),, send into curing room simultaneously and be cured together with interior outer mold with the vehicle body integral body that combines.

(7) remove the joint piece (fastening, locations) of outer mold, decompose the dismounting outer mold.

(8) remove the joint piece of inner mold, decompose the dismounting inner mold, and membrane module in taking out by the car door mouth.

(9) vehicle body is carried out surface treatment, and make sectional repair.

(10) vehicle body is sent into the intensification chamber, carried out post-processing and eliminate distortion.

Claims

1, a kind of processing technology of glass-felt plastic automotive body structure of novelty, it comprises:

(1) the combination outer mold carries out pasting uppermost layer after the surface treatment, pastes technology and generally processing technology is identical;

(2) the combined inner mold tool pastes the endosexine;

(3) with the required embedded part that gives, chimeric, celluar tissue etc. are arranged at required position in the uppermost layer;

(4) with inner mold together with the endosexine that is made into, place in the outer mold that is inverted:

(5) on the bottom of endosexine (car bottom plate), the device celluar tissue pastes the base plate skin, and connects mutually with the vehicle body uppermost layer;

It is characterized in that:

(6) the vehicle body integral body after will making up together with interior outer mold, is sent into curing room simultaneously and is cured;

(7) remove the joint piece (fastening, locations) of outer mold, decompose the dismounting outer mold;

(8) remove the joint piece of inner mold, decompose the dismounting inner mold, and take out the inner mold assembly by the car door mouth;

(9) vehicle body is carried out surface treatment, and make sectional repair;

(10) vehicle body is sent into the intensification chamber, carried out post-processing, eliminate distortion.