A kind of hub decorative cover manufacturing method
The present invention relates to auto parts and components, especially a kind of hub decorative cover manufacturing method.
In the manufacturing procedure of car trim, after working of plastics plating is completed, it can be sprayed especially in plate surface, this spray
The processing step of paint is：Plate surface is cleaned first；Then the place that need not be painted is covered using cover mold；Finally
Using flush coater by paint spraying to electroplating surface.Existing this lacquer spraying technique complex procedures, operating efficiency is low, and finished product
Rate is low, and manufacturing cost is higher, and its caused economic benefit is relatively low, and spraying can pollute to environment.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of hub decorative cover manufacturing method, and cost is lower, more environmentally friendly.
In order to solve the above technical problems, the technical scheme is that：A kind of hub decorative cover manufacturing method, including it is following
（1）PET sheet is stocked up；
（2）In the color layers of back side silk-screen first of PET sheet, the first color layers are made up of the mixture of varnish and silver powder；
（3）The color layers of silk-screen second in the first color layers, the second color layers are ink layer；
（4）Electroplate to form logo pattern at the back side of PET sheet, the region of non-silk-screen color layers forms electrodeposited coating；
（5）The silk-screen layer of varnish in the second color layers；
（6）The silk-screen adhesive phase on layer of varnish；
（7）PET sheet is cut；
（8）PET sheet passes through hot-forming；
（9）PET sheet is molded with base by in-mould injection.
In hub decorative cover manufacturing method of the present invention, the process that eliminates spraying reduces the pollution to environment, so entirely
Manufacture more environmentally friendly；Because color layers are cooperatively formed by black ink and other color layers, therefore the amount of ink for screen printing is less,
So production cost is lower；Can different color layers of silk-screen as needed, so as to form different patterns, enrich decoration
The moulding of lid.
As an improvement, the thickness of the PET sheet is 100 μm.
As an improvement, the particle diameter of the silver powder is 6 ~ 15 μm.
As an improvement, in the first color layers, the proportioning of varnish and silver powder is 400:1.
As an improvement, the electrodeposited coating is formed by vacuum plating.
As an improvement, the step（2）With step（3）Between, step（3）With step（4）Between, step（5）With step
（6）Between and step（6）With step（7）Between, it is both needed to add roasting procedure, in roasting procedure, baking temperature is 80 ~ 100
As an improvement, temperature hot-forming PET is 290 ~ 295 DEG C, hot pressing time is 5 ~ 10 seconds.
As an improvement, the material of the base is PC and ABS mixture.
The caused compared with prior art beneficial effect of the present invention is：
The process for eliminating spraying, the pollution to environment is reduced, so entirely manufacturing more environmentally friendly；Because color layers are by black
Ink cooperatively forms with other color layers, therefore the amount of ink for screen printing is less, so production cost is lower；Can silk as needed
Different color layers are printed, so as to form different patterns, enrich the moulding of trim.
Brief description of the drawings
Fig. 1 is trim decomposition view.
Fig. 2 is decoration element sectional view.
Fig. 3 is trim manufacturing flow chart of the present invention.
With reference to Figure of description, the invention will be further described.
As shown in Figure 1, 2, a kind of car hub decorative cap, it includes decoration element 1 and base 2, and the decoration element 1 wraps
The PET sheet 11 in surface layer is included, first color layers 12 at the back side of PET sheet 11 is arranged on, is arranged in the first color layers 12
The second color layers 13, electrodeposited coating 14, the layer of varnish 15 for protecting the second color layers 13 and silk-screen it is viscous on layer of varnish 15
Mixture layer 16.The color layers of the present invention can silk-screen multiple color as needed, so as to change the pattern of silk-screen.In PET sheet
The region of non-silk-screen color layers forms plating and forms electrodeposited coating 14 on 11, and the logo that is shaped as of the electrodeposited coating 14 is formed, other areas
Domain silk-screen color layers set off electrodeposited coating 14, make electrodeposited coating 14 is brighter to highlight.Described adhesive layer 16 is used to bond with base 2.
It is curved after decoration element is hot-forming, it is bonded with the arc top surface of base 2；The edge of PET sheet 11 forms groove, the groove
The edge of base 2 can be coated.The material of the base 2 be PC and ABS mixture, bottom rim be provided with some cards
Pin, the card base, which is circumferentially distributed, surrounds accommodation space, and the inner side of card base is provided with neck, and jump ring is provided with accommodation space, described
Jump ring is stuck in the neck of card base, for preventing card base from deforming.
As shown in figure 3, the manufacture method of car hub decorative cap of the present invention, comprises the following steps：
（1）PET sheet 11 is stocked up, and the thickness of the PET sheet is 100 μm；
（2）Preshrunk water process is carried out to PET sheet 11, specially heats 80 ~ 90 DEG C, is heated 20 ~ 40 minutes；
（3）In the first color layers of back side silk-screen 12 of PET sheet 11, the number of silk-screen is 1 time, the first color layers 12 by varnish with
The mixture composition of silver powder, the particle diameter of the silver powder is 6 ~ 15 μm, and in the first color layers 12, the proportioning of varnish and silver powder is 400:
（4）To silk-screen, the PET sheet 11 of first color layers 12 is toasted, and the temperature of baking is 80 ~ 90 DEG C, the time of baking
For 30 ~ 40 minutes.
（5）The second color layers of silk-screen 13 in the first color layers 12, silk-screen number are 2 times, and the second color layers 13 are ink
（6）The PET sheet 11 of the second color layers of silk-screen 13 is toasted, the temperature of baking is 80 ~ 90 DEG C, baking when
Between be 30 ~ 40 minutes；
（7）Logo pattern is formed by vacuum plating at the back side of PET sheet 11, the region of non-silk-screen color layers forms electrodeposited coating
（8）The silk-screen layer of varnish 15 in the second color layers 13；
（9）PET sheet 11 is toasted, the temperature of baking is 80 ~ 90 DEG C, and the time of baking is 30 ~ 40 minutes；
（10）The silk-screen adhesive phase 16 on layer of varnish 15, the number of silk-screen is 4 times；
（11）PET sheet 11 is toasted, the temperature of baking is 80 ~ 90 DEG C, and the time of baking is 100 ~ 120 minutes
（12）PET sheet 11 is cut；
（13）For PET sheet 11 by hot-forming, hot-forming temperature is 290 ~ 295 DEG C, and hot pressing time is 5 ~ 10 seconds；
（14）PET sheet 11 is molded with base 2 by in-mould injection.