CN106113380B - A kind of imitative woven design automotive upholstery processing method - Google Patents

Abstract

A kind of imitative woven design automotive upholstery processing method, it is characterised in that：This method comprises the following steps：（1）Die treatment；（2）Silk-screen plate makes；（3）Ink formulation；（4）Line is decorated to make；（5）Decalcomania transfer；（6）Mould corrodes；（7）Mould inspection, cleaning；（8）Injection：By the mold cavity internal temperature control made at 50 ± 5 DEG C, start to be molded, at 190 220 DEG C, injection time is controlled in 0 4s for melt adhesive temperature control, and using segmentation constant pressure type pressurize mode, the dwell time is controlled in 0 8s, natural cooling, the demoulding.This method by using autogamy ink and corrosive liquid, while to injection moulding process using segmentation constant pressure type pressurize mode, the moulding that decorative pattern is clear, mechanical property is good can be prepared.

Description

A kind of imitative woven design automotive upholstery processing method

Technical field

The present invention relates to a kind of processing method of automotive upholstery, and in particular to a kind of processing of imitative woven design automotive upholstery Method.

Background technology

Automotive upholstery refers to that car steering chamber interior can be with the part of direct body contact part.This part due to It can be contacted with driver and crew's body, so, in order to give people a kind of more comfortable feel and more preferable visual effect, vapour The feel that in-car decorations can all be done as far as possible is better.Common inside gadget surface treatment has corium cladding, dermatine cladding, cloth Material cladding, leather texture imitation plastic material.However, corium cladding cost is too high, it is not suitable for the use of ordinary populace car, increases the entirety of car Cost；Dermatine cladding is not durable, and scraping easily causes to damage, and is not easily repaired, even if repairing also influences in-car U.S. of portion Sense；Cloth cladding process manufacturing process is complicated, and process is more, and probability is also bigger the defects of product, so cost is difficult to reduce.Cause This, it is necessary to a kind of processing method of new automotive upholstery is developed, solves prior art problem.

The content of the invention

It is an object of the invention to provide a kind of brand-new imitative woven design automotive upholstery processing method, by imitating woven design injection side Method realizes the visual effect of cloth cladding inside gadget, reduces defect probability, reduces production cost.

To achieve the above object, technical scheme of the present invention is achieved in that the processing method comprises the following steps：

（1）Die treatment：Mold cavity and surrounding are cleaned with gasoline, makes surface cleaning；Do not do the part on decoration line surface Protected, brushed two to three times with nitrate paint or chlorinated polyvinyl chloride paints, the hole, groove rubber stopper, plasticine or sealing tape on mould are protected Shield, treats that paint film parches, and part magnesia water slurry oil removing, the cleaning on decoration line surface is done, until surface energy is by water complete wetting； Then water is blotted with sponge, hair dryer drying is standby.

（2）Silk-screen plate makes：Choose cloth and make base map, base map is shot, by manufacture printed wire silk-screen plate Method throwing half tone, it is standby；

（3）Ink formulation：Solid asphalt 250-300g is chosen, is loaded in cleaning iron flask, coal oil 250-300ml, heating 1~2h is tempered, obtains pitch ink；By pitch ink and ink by weight 2：1 mixing, adds dry oil, dry oily dosage is mixed The 2%~4% of ink by weight is closed, mixes well, obtains transfer ink against corrosion, it is standby；

（4）Line is decorated to make：Using screen process press, silk-screen plate is loaded onto, rubber flap puts appropriate transfer ink against corrosion, Printed, uniformly clearly decorate line until printing off, then printed with decal paper；Printed decal paper is put into baking oven grid On, it is dried, for temperature control at 50~60 DEG C, the time is 5~10min when drying, and is dried to the taking-up of ink leather hard；

（5）Decalcomania transfer：Dried decal paper is cut, take off be printed on decoration line one layer of thin paper, against corrosion turn Printing ink is pasted towards mould, the transfer ink against corrosion on decal paper is transferred on mould；After having transferred, paper is taken off Base, be dried, until table, it is inner parch untill；

（6）Mould corrodes：Decoration line part is done in mould first to be brushed one times with corrosive liquid, makes to be in uniform grey at no ink, It is spontaneously wet out by water completely, mold cavity surrounding sticks corrosion protection apron, starts etching machine, corrodes 10~15min；

（7）Mould inspection, cleaning：Mould after corrosion is hung out, running water rinses rapidly, checks corrosion depth, reaches Go out groove after it is required that immediately；Mould is rinsed with running water, cleans residue chemistry solvent, protection apron is removed, dries surface, cleared up Electricity consumption blowing drying mould afterwards；

（8）Injection：By the mold cavity internal temperature control made at 50 ± 5 DEG C, start to be molded, melt adhesive temperature control At 190-220 DEG C, injection time is controlled in 0-4s, and using segmentation constant pressure type pressurize mode, dwell time control is in 0-8s, nature Cooling, the demoulding.

As a preference of the present invention, in mould corrosion process, corrosive liquid is prepared by following raw materials：Nitric acid 10~20 Ml, the ml of sulfuric acid 25~35,5~10ml of hydrochloric acid, 2~5ml of kerosene, add suitable quantity of water, are configured to corruption of the Baume degrees for 30~35 ° of Be Lose liquid.

The present invention decoration line manufacturing process in influenceed by transfer ink against corrosion it is especially big, if ink mistake during printing It is dry, then ink can occur during printing and block mesh, cause figure line unintelligible, if ink is excessively dilute, the decoration line of printing is easy It is fuzzy, it is therefore desirable to strictly to control ink formulation.

The advantages and positive effects of the present invention：

（1）The method of the invention, by using the ink of autogamy, can effectively control oil during decoration line is made Mo Gan, dilute, decorative pattern is clear so as to preparing, the decoration line of good transferring effect.

(2) the method for the invention corrodes mould by using homemade corrosive liquid, makes the decorative pattern on its mould more clear Clear, corrosion depth is uniform, figure line is clear, so that the module effect of decorative patterns prepared is good.

(3) the method for the invention uses segmentation constant pressure type pressurize mode, and strictly control filling speed in injection moulding process Degree, the imitative woven design automotive upholstery of high quality can be prepared.

Embodiment

Technical scheme is described in further detail below in conjunction with specific embodiments, it is therefore intended that make Those skilled in the art are more clearly understood and recognized to the application.Following specific embodiment should not be in any degree It is understood or is construed to the application claims are claimed the limitation of scope.

Embodiment 1

1st, die treatment

1.1 producing basic map：Cloth selection decorative pattern is clear, uniform, even curface, first sprays one layer of black self-drying paint, dries Afterwards, smeared with calcium carbonate more than 200 mesh, fill and lead up lines, then gently erase the white powder of raised face, it is exposed black, until Space of a whole page decorative pattern is clear, in sharp contrast, and base map just accuses completion.

1.2 photomechanical production：Using CR films, 1：1 pair of base map is shot；Photographic negative size is 200mm × 300mm.

2nd, silk-screen plate makes：With 200~300 mesh yellow terylene tiffanys, blue sensitive film thick 0.02mm, aluminum frame and Photographic negative, manufactured by the method for manufacture printed wire silk-screen plate.

3rd, ink formulation：High-quality solid asphalt 300g is chosen, loads and cleans rustless iron flask, coal oil 300ml, be placed on adjustable 1.5h is tempered on warm electric furnace, controls slight boiling condition, appropriate stirring, to be cooled to room temperature as ice milk shape, skinning does not rise again on surface Wrinkle is preferred, and this is pitch ink；By pitch ink and 2711-4 ink by weight 1：1 mixing, it is dry to add peony brand No78 Oil, dosage are the 3% of mixed ink weight, are mixed well with ink knives, and transfer ink against corrosion is just made, standby；

4th, line is decorated to make：With WPS400 type screen processes press, silk-screen plate is loaded onto, rubber flap puts appropriate transfer against corrosion Ink, it is firmly uniform first with useless blueprinting paper reverse side examination print, weight will appropriateness, should not Hui Mo, uniformly clearly filled until printing off Decoration, then printed with decal paper；It should be cut into appropriately sized before decal paper print, be struck off with clean squeegee；By printed applique Paper is put on baking oven grid, and ink is face-up, is uniformly spread out, must not be overlapping, 50~60 DEG C of temperature control, is dried to ink leather hard and is taken Go out, i.e., it is tack-free gently to touch decal paper curing ink, and slightly pressure just glues hand, and control time is 5~10min.

5th, decalcomania transfer：According to mold cavity feature, decal paper is cut into the shape for being easy to paste, gently takes off and is printed on dress One layer of thin paper of decoration, ink are pasted towards mould, carefulness, it is desirable to and smooth docile wrinkle resistant, plane is scraped with squeegee, Curved surface is kneaded with degreasing cotton, platen base of vertically exerting oneself, decal paper curing ink is transferred on mould；After having transferred, with sea Silk floss is stained with a small amount of water and soaks decal paper, then gently takes paper substrate off, and the water on mould is blotted with sponge or blotting paper；Then will transfer Ink on to mould dries, and makes its table, inner parches.

6th, mould corrodes

6.1 corrosive liquids configure：The ml of nitric acid 20, the ml of sulfuric acid 30, hydrochloric acid 5ml, kerosene 3ml are taken, adds suitable quantity of water, is configured to Baume degrees is 30 ° of Be corrosive liquid.

6.2 corrosion：Running water 1min is sprayed into the part done at decoration line with hydraulic giant, checking that ink is combined with mould is It is no firm；Then dip in corrosive liquid with wool spread pen to brush one times, should be in uniform grey at no ink, be spontaneously wet out by water completely, to ensure Corrosion is uniform；After confirmation mould can corrode, die cavity surrounding double-sided adhesive paper and igelite cloth patch enclose three layers, shape Into corrosion protection apron, 300~500mm is grown than mould.Etching machine uses the spherical shower nozzle of nozzle-type, uniform 19 of half of spheroid Nozzle, can homogeneous solid injection.Mould is hung with electric gourd hang, down, shower nozzle is upward and in protection apron center for die cavity, and two People buttresses mould and slowly rotated, and starts etching machine, with manual time-keeping, corrodes 10~15min.

7th, mould inspection, cleaning：Mould is hung out, running water rinses rapidly, is imprinted with 5~10 times of magnifying glasses or plasticine Line is decorated, checks corrosion depth, as corrosion depth is inadequate, corrosion is filled in covering capable of hoisting, reaches requirement, is gone out groove immediately and is cleared up；Cleaning When, rinse mould with running water, clean residue chemistry solvent, remove plastic apron, surface is dried with hard waste, peel off sealing tape and Chlorinated polyvinyl chloride paints, electricity consumption blowing drying mould after having cleared up, then be stained with antirust oil with hard waste and smear die surface.

8th, automobile B-column is molded：The plastic part size, product length, width and height are about 782 mm × 256mm × 36mm；Product wall It is thick in 3.2~3.5mm, it is relatively uniform.First, the mould after cleaning is heated, makes in mold cavity temperature control 50 DEG C, deployed material is heated to 190 DEG C, starts to be molded, maximum injection pressure 98Mpa, injection time is 2.95 s, together When, using segmentation constant pressure type pressurize mode, the first packing stage, to make lines clear, takes height because woven design is arranged at product bottom Pressurize, pressure 98Mpa, time are about 0~4s；Second segment dwell pressure slightly reduces, but is still in high pressure conditions, pressure 72 Mpa, time are about 4~8s；It is 15s that pressurize, which terminated to time total time of gate solidification, natural cooling, the demoulding.

Moulding detects：The automobile B-column surface made using the above method is printed on clear, uniform woven design, lines It is good, touch up more comfortable, without unintelligible or fuzzy part；Meanwhile moulding mechanical property itself meets the requirements.

Comparative example 1

Ink formulation：High-quality solid asphalt 400g is chosen, loads and cleans rustless iron flask, coal oil 300ml, be placed on temperature controllable 1.5h is tempered on electric furnace, controls slight boiling condition, appropriate stirring, to be cooled to room temperature as ice milk shape, skinning is not wrinkle resistant again on surface It is preferred, this is pitch ink；By pitch ink and 2711-4 ink by weight 1：1 mixing, adds the dry oil of peony brand No78, Dosage is the 3% of mixed ink weight, is mixed well with ink knives, and transfer ink against corrosion is just made, standby；

Remaining step is same as Example 1, decorate line and make printing using transfer ink against corrosion made from comparative example 1, Occur that ink blocks mesh, cause figure line unintelligible.

Comparative example 2

It is same as Example 1 to processes such as mould corrosion before injection；

Automobile B-column is molded：The plastic part size, product length, width and height are about 782 mm × 256mm × 36mm；Product wall thickness It is relatively uniform in 3.2~3.5mm.First, the mould after cleaning is heated, makes in mold cavity temperature control at 50 DEG C, Deployed material is heated to 190 DEG C, starts to be molded, maximum injection pressure 98Mpa, injection time is 2.95 s, is taken High pressurize, pressure 80Mpa, time are about 0~8s；It is 15s that pressurize, which terminated to time total time of gate solidification, naturally cold But, the demoulding.

It is molded by this way on the part injection part come and occurs the unsharp phenomenon of lines, consideration may be due to Dwell pressure is consistent always, is not starting most to cause to one good pressure of mould filling thing.

Claims (2)

1. A kind of 1. imitative woven design automotive upholstery processing method, it is characterised in that：This method comprises the following steps：

   (1) die treatment：Mold cavity and surrounding are cleaned with gasoline, makes surface cleaning；Do not do the part nitre on decoration line surface Lacquer or chlorinated polyvinyl chloride paints protection, are brushed two to three times, hole, groove rubber stopper, plasticine or sealing tape protection on mould, are treated Paint film parches, and part magnesia water slurry oil removing, the cleaning on decoration line surface is done, until surface energy is by water complete wetting；Then Water is blotted with sponge, hair dryer drying is standby；

   (2) silk-screen plate makes：Choose cloth and make base map, base map is shot, by the method for manufacture printed wire silk-screen plate Throwing half tone, it is standby；

   (3) ink formulation：Solid asphalt 250-300g is chosen, is loaded in cleaning iron flask, coal oil 250-300ml, heating tempers 1 ~2h, obtain pitch ink；By pitch ink and ink by weight 1：1 mixing, adds dry oil, dry oily dosage is mixed ink The 2%~4% of weight, is mixed well, and obtains transfer ink against corrosion, standby；

   (4) line is decorated to make：Using screen process press, silk-screen plate is loaded onto, rubber flap is put appropriate transfer ink against corrosion, carried out Printing, line is clearly uniformly decorated until printing off, then printed with decal paper；Printed decal paper is put on baking oven grid, entered Row drying, for temperature control at 50~60 DEG C, the time is 5~10min when drying, and is dried to the taking-up of ink leather hard；

   (5) decalcomania transfer：Dried decal paper is cut, takes one layer of thin paper for being printed on decoration line, transfer oil against corrosion off Ink is pasted towards mould, the transfer ink against corrosion on decal paper is transferred on mould；After having transferred, paper substrate is taken off, enter Row drying, until table, it is inner parch untill；

   (6) mould corrodes：Decoration line part is done in mould first to be brushed one times with corrosive liquid, makes to be in uniform grey at no ink, completely It is spontaneously wet out by water, mold cavity surrounding sticks corrosion protection apron, starts etching machine, corrodes 10~15min；The corrosive liquid is under Raw material is stated to be prepared：10~20ml of nitric acid, 25~35ml of sulfuric acid, 5~10ml of hydrochloric acid, 2~5ml of kerosene, add suitable quantity of water, configuration Into the corrosive liquid that Baume degrees is 30~35 ° of Be；

   (7) mould inspection, cleaning：Mould after corrosion is hung out, running water rinses rapidly, checks corrosion depth, reaches requirement Go out groove immediately afterwards；Mould is rinsed with running water, cleans residue chemistry solvent, protection apron is removed, dries surface, use after having cleared up Hair dryer dries up mould；

   (8) it is molded：By the mold cavity internal temperature control made at 50 ± 5 DEG C, start to be molded, melt adhesive temperature control exists 190-220 DEG C, injection time control is in 0-4s, and using segmentation constant pressure type pressurize mode, dwell time control is naturally cold in 0-8s But, the demoulding.
2. A kind of 2. imitative woven design automotive upholstery processing method according to claim 1, it is characterised in that：Using segmentation constant pressure Formula pressurize mode, the first packing stage pressure are 98MP a, and the time is 0~4s；Second segment dwell pressure is 72MP a, and the time is 4~8s.