CN216678942U - Take silk screen printing pattern sign exterior trim spraying spare part - Google Patents

Abstract

The utility model provides an exterior decoration spraying part with a silk-screen pattern mark, which comprises an exterior decoration spraying part base material and an exterior decoration spraying part coating, wherein the exterior decoration spraying part coating is coated on the exterior decoration spraying part base material; the pattern mark of the exterior part spraying part with the screen pattern mark is displayed on the outer surface of the automobile, and is suitable for severe external environments such as ultraviolet irradiation, high and low temperature change and the like after being exposed in the sun and rain environment for a long time, so that the requirement of customized mass production of the personalized pattern mark of the automobile exterior part is met, and the appearance and the shape of the automobile are richer in visual impact and are bright and colorful.

Description

Take silk screen printing pattern sign exterior trim spraying spare part

Technical Field

The utility model belongs to the technical field of automobile part processing and manufacturing, and particularly relates to an outer decoration spraying part with a silk-screen pattern mark.

Background

With the continuous development of social productivity, automobiles become an indispensable vehicle for short trips of people, and the automobiles are rapidly popularized to the lives of the masses. Particularly, in recent years, the domestic automobile market also shows a blowout situation, various automobiles such as traditional fuel automobiles, pure electric automobiles and intelligent internet are all in a whole, meanwhile, the requirement of consumers on the product quality of the automobiles is higher and higher, and various consumer tastes are more and more diversified. In order to make the automobile more individual or distinctive, the need for adding pattern marks on the outer shell or the exterior parts of the automobile, such as adding LOGO, adding patterns, etc., is present.

The service environment of the automobile exterior part is worse than that of the automobile interior part, for example, the automobile exterior part needs to be exposed in the sun and rain environment for a long time, and often bears ultraviolet irradiation, changes of high and low temperatures, acid and alkaline rain and the like.

Therefore, it is urgently needed to develop a design that can not only meet the requirement of adding diversity and individuation of pattern marks on automobile exterior parts, but also guarantee the requirement or index of industrial application or daily use.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the applicant provides an external decoration spraying part with a silk-screen pattern mark.

According to the technical scheme, the utility model provides the external decoration spraying part with the silk-screen pattern mark, which comprises an external decoration spraying part base material and an external decoration spraying part coating, wherein the external decoration spraying part coating is coated on the external decoration spraying part base material. Wherein, the base material of the exterior part is resin material or metal material.

Preferably, the exterior spraying part coating comprises a paint coating and an ink coating. The paint coating further comprises a primer layer, a colored paint layer and a clear paint layer. The ink for ink coating mainly comprises a main agent, a diluent and a curing agent.

Furthermore, the exterior decoration spraying part with the screen printing pattern mark is a B-column exterior decoration plate assembly with the screen printing pattern mark.

Furthermore, the external decoration spraying part with the silk-screen pattern mark is a plastic piece which is fixed between the front and rear frameless vehicle doors on the left side of the sheet metal vehicle body and plays a role in decoration and buffering. The plastic part comprises an outer decorative plate body, an outer decorative plate framework and silk-screen icons on the outer decorative plate. Preferably, the outer decoration plate framework is used for fixing the outer decoration plate body, and silk-screen icons on the outer decoration plate are printed on the outer decoration plate body.

The plastic part further comprises sealing shock absorption foam, a buckle, a lower end positioning column and an upper end positioning column, and the sealing shock absorption foam and the buckle are fixed on the outer decorative plate framework through assembly; the upper end positioning column and the lower end positioning column are aligned and positioned with the metal plate hole of the whole vehicle, so that the installation consistency of the external decoration spraying parts with the silk-screen pattern identification is ensured.

Compared with the prior art, the spraying part with the silk-screen pattern mark exterior decoration has the following technical effects:

1. the requirement of customized batch production of the personalized pattern identification of the automobile exterior part spraying part is met, and the appearance and the shape of the automobile are richer in visual impact and are bright and colorful.

2. The method solves the problems of fading, easy damage, scratch resistance, washing of the container after washing and the like of the pattern which is generated by adopting the existing pattern sticking process for a long time.

3. The texture and the grade of the automobile exterior decoration spraying parts are integrally improved, and the batch stable mass production technology of the automobile exterior decoration spraying parts with the screen printing pattern marks is realized.

4. The production and manufacturing technology of the automobile exterior part spraying part is innovated, the enterprise process method is effectively expanded, and the production and manufacturing level of the enterprise exterior part is improved.

5. The spraying parts with the silk-screen pattern mark for the exterior decoration have long service life and are convenient to maintain, popularize and apply.

Drawings

FIG. 1 is a schematic front view of a spraying component with a silk-screen pattern mark for exterior decoration according to the present invention;

FIG. 2 is a rear view of an exterior part with silk-screen pattern logo according to the present invention;

FIG. 3 is a side view of an exterior part with a silk-screen pattern logo according to the present invention;

FIG. 4 is an enlarged view of a portion of the exterior trim spraying component with silk-screen pattern logo in FIG. 1;

FIG. 5 is a general schematic view of the exterior trim body mold of FIG. 1;

FIG. 6 is a schematic view of a front mold of the body of the exterior trim panel of FIG. 5;

FIG. 7 is a rear mold view of the body of the exterior trim panel of FIG. 5;

FIG. 8 is a schematic view of a printing tool used for silk-screen printing of pattern logo icons;

fig. 9 is a schematic structural diagram of the screen of fig. 8;

FIG. 10 is a schematic view of the construction of the rubber blade in FIG. 8;

fig. 11 is a schematic view of a coating structure of the silk-screen pattern logo of fig. 1.

The reference numbers in the drawings are as follows:

1-an external decorative board body, 2-an external decorative board framework, 3-a silk-screen icon on the external decorative board, 4-sealing shock-absorbing foam, 5-buckles, 6-lower end positioning columns, 7-upper end positioning columns, 8-mold positioning rings, 9-a front mold A plate, 10-a rear mold B plate, 11-a front mold base plate, 12-a front mold base plate, 13-a front mold cavity, 14-a rear mold base plate, 15-a rear mold core, 16-a rear mold guide post, 17-a rear mold base plate, 18-a screen height adjusting knob, 19-a counterweight balance hammer, 20-a screen clamping screw, 21-a screen clamp, 22-a silk-screen printing plate, 23-a printed object, 24-a front and rear fine adjusting knob, 25-a printing table top, 26-a left and right fine adjusting knob, 27-a screen frame, 28-a screen silk screen, 29-a rubber scraper, 30-a rubber scraper handle, 31-a varnish layer, 32-an ink layer, 33-a colored paint layer, 34-a primer layer and 35-an exterior decoration spraying part base material layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments of the present invention, belong to the protection scope of the present invention, and the protection scope of the present invention should not be limited to only the specific structures or components or specific parameters described below.

The utility model provides an exterior decoration spraying part with a silk-screen pattern mark, which mainly comprises process modules of product design process planning in the early spraying stage, mold development, silk-screen tooling ink development, injection molding, silk-screen spraying molding and the like. In the utility model, two processes of silk screen printing and spraying are fused into an integral process of the external decoration spraying part with the silk screen printing pattern identifier, then a special screen printing plate and a special silk screen printing tool are developed according to the size and the modeling requirements of the pattern identifier in the process of silk screen printing tool and ink development, then special ink paint is developed according to a standard color plate, and finally one-time forming of the external decoration spraying part with the silk screen printing pattern identifier is realized through the processes of silk screen printing and spraying.

The utility model provides an exterior decoration spraying part with a silk-screen pattern mark, which is particularly suitable for exterior decoration spraying parts of passenger cars or commercial cars. The external decoration spraying part base material is preferably made of resin materials and metal materials, the external decoration spraying part coating mainly comprises a paint coating and an ink coating, the paint coating preferably further comprises a primer layer, a colored paint layer and a clear paint layer, the ink for the ink coating mainly comprises a main agent, a diluent and a curing agent, and the external decoration spraying part with the silk-screen pattern mark meeting the performance and appearance requirements is finally formed according to a certain planned process sequence and conditions. The resin part in the external decorative spray part substrate is generally formed by plastic particle plasticizing injection molding or blow molding, the plastic particle generally mainly comprises types such as PC + ABS, ASA + PMMA, PP and the like, the metal part is generally formed by punching and welding carbon steel, and the surface of the metal part is generally subjected to electrophoretic surface treatment once to form a first layer of the external decorative spray part substrate.

The manufacturing method of the exterior decoration spraying part with the screen printing pattern mark comprises the following steps:

step S1, hanging the external decoration spraying component substrate, and then ensuring that oil stains and dust on the surface of the external decoration spraying component substrate are cleaned up through primary wiping, secondary wiping and electrostatic dust removal;

step S2, performing primer procedure coating and leveling treatment on the external decoration spraying part base material;

step S3, carrying out color paint process coating and leveling treatment on the base material of the exterior part;

step S4, placing the exterior decoration spraying part base material obtained in the step S3 in a high-temperature oven, drying the base material for 30-60 minutes in a streamline form at the temperature of 50-100 ℃, and putting the base material off the line, wherein the temperature of 80 +/-5 ℃ is preferred; preferably 45 minutes ± 5 minutes;

step S5, performing a screen printing process on the exterior sprayed part substrate (the exterior sprayed part substrate coated with the primer and the color paint and dried) obtained in step S4, printing a pattern identifier on the surface of the color paint through a screen printing plate, drying the color paint at normal temperature for 2 to 10 minutes, preferably 5 minutes, and then hanging the exterior sprayed part substrate with the pattern identifier on a spraying hanger; screen pattern logo printing is preferably ink printing;

step S6, varnish coating and leveling procedure treatment is carried out, the exterior decoration spraying part base material treated by the varnish coating and leveling procedure is placed in a high-temperature oven, and is dried and off-line in a streamline form at the temperature of 50-100 ℃ for 30-60 minutes, preferably the temperature of 80 +/-5 ℃; preferably 45 minutes ± 5 minutes;

and step S6, finishing and appearance checking the exterior spraying parts with the silk-screen pattern marks obtained in the step S6, and then transporting the exterior spraying parts to a finished product warehouse.

The externally-decorated spraying part with the silk-screen pattern mark processed by the process further comprises an aging treatment step in step S6, specifically, the aging treatment step is carried out when the irradiation dose is 2000KJ/m²-4000KJ/m²Under the radiation of (2), carrying out accelerated xenon lamp aging treatment with the aging time of 1500h (h) to 2000h (h); the radiation dose is optimized to 2500KJ/m²The aging time is preferably 1894 h. After the accelerated xenon lamp aging treatment, the stable quality performance of the exterior decoration spraying parts of the silk-screen pattern marks is further ensured under the severe external use environment. The key point of the manufacturing method of the external decoration spraying part with the screen printing pattern mark is that electrostatic dust removal, reasonable and proper ink coating time and distribution position are adopted and can be integrated with a paint coating, and the external decoration spraying part with the screen printing pattern mark processed by the process has pattern adhesive force, scraping resistance, light aging resistance and external decoration spraying partThe appearance and the requirement are obviously superior to the prior art.

The spraying parts with silk-screen pattern marks of the exterior decoration of the present invention will be further described with reference to the accompanying drawings.

The spraying part with the silk-screen pattern mark for the exterior trim as shown in fig. 1 is specifically a B-column exterior trim plate assembly with the silk-screen pattern mark; FIG. 2 is a rear view of the B-pillar outer fascia assembly shown in FIG. 1 and identified by a screen pattern; FIG. 3 is a side view of the B-pillar garnish assembly shown in FIG. 1 with a logo of a screen pattern; fig. 4 is an enlarged view of a silk-screen icon on the B-pillar outer sheathing panel shown in fig. 1. The external decoration spraying part with the silk-screen pattern mark shown in fig. 1 is preferably a plastic part which is fixed in the middle of a left front and rear frameless vehicle door on a sheet metal vehicle body and plays a role of decoration buffering, and comprises an external decoration plate body 1, an external decoration plate framework 2 and silk-screen icons 3 on the external decoration plate, wherein the external decoration plate framework 2 is used for fixing the external decoration plate body 1, and the silk-screen icons 3 on the external decoration plate are printed on the external decoration plate body 1; preferably, the exterior trim panel body 1 and the exterior trim panel skeleton 2 are bonded together by glue. Further, as shown in fig. 2, 3 and 4, the spraying parts with the silk-screen pattern mark further comprise a sealing shock absorption foam 4, a buckle 5, a lower end positioning column 6 and an upper end positioning column 7, the sealing shock absorption foam 4 and the buckle 5 are fixed on the outer decoration plate framework 2 through assembly, and the upper end positioning column 7 and the lower end positioning column 6 are aligned with the sheet metal hole of the whole vehicle when the whole vehicle is loaded to ensure the consistency of the installation of the spraying parts with the silk-screen pattern mark.

FIG. 5 is a general schematic view of the exterior trim body mold of FIG. 1; FIG. 6 is a schematic view of a front mold of the body of the trim panel of FIG. 5; FIG. 7 is a rear mold view of the body of the exterior trim panel of FIG. 5; the B-column exterior plate body is plasticized by glue and filled into the cavity shown in figure 5 through an injection nozzle of an injection molding machine at high pressure and high speed, and the B-column exterior plate body exterior spraying part base material is formed after cooling and solidification. The mold cavity shown in fig. 5 is formed by closing the front mold of fig. 6 and the rear mold of fig. 7. The outer decorative plate body mould comprises a mould positioning ring 8, a front mould A plate 9, a rear mould B plate 10, a front mould base plate 11, a front mould base plate 12, a front mould cavity 13, a rear mould base plate 14, a rear mould core 15, a rear mould guide post 16 and a rear mould base plate 17, wherein the front mould of the outer decorative plate body and the rear mould of the outer decorative plate body are installed together through the mould positioning ring 8, the mould positioning ring is a part for butting the front mould and the rear mould with a nozzle of an injection molding machine, the front mould of the outer decorative plate body comprises the front mould A plate 9, the front mould base plate 11, the front mould base plate 12 and the front mould cavity 13, and the front mould A plate 9, the front mould base plate 11 and the front mould base plate 12 limit the front mould cavity 13; the rear mould of the outer decoration plate body comprises a rear mould B plate 10, a rear mould bottom plate 14, a rear mould core 15, a rear mould guide post 16 and a rear mould base 17, the rear mould B plate 10, the rear mould bottom plate 14 and the rear mould base 17 limit the rear mould core 15, and the rear mould of the outer decoration plate body is positioned through the rear mould guide post 16.

The printing tool for the silk-screen pattern logo shown in fig. 8 comprises a screen height adjusting knob 18, a counterweight balance weight 19, a screen clamping screw 20, a screen clamp 21, a silk-screen 22, a printed object 23, a front and rear fine adjusting knob 24, a printing table 25 and a left and right fine adjusting knob 26.

Fig. 9 is a schematic diagram of the structure of the screen in fig. 8, the screen including a screen frame 27 and a screen 28; the screen 28 is formed by a screen and a pattern mark thereon, preferably by exposure on the screen.

Fig. 10 is a schematic structural diagram of the rubber scraper in fig. 8, which prints ink on the base material 1 of the B-pillar exterior trim panel body exterior trim part by the rubber scraper, and the rubber scraper comprises a rubber scraper 29 and a wood rubber scraper handle 30. Fig. 11 is a schematic view of a cut surface of an enlarged icon in fig. 4, which includes a varnish layer 31, an ink layer 32, a colored paint layer 33, a primer layer 34, and an exterior sprayed part substrate layer 35, wherein the varnish layer 31, the ink layer 32, the colored paint layer 33, the primer layer 34, and the exterior sprayed part substrate layer 35 are sequentially coated from top to bottom. The ink coating cannot be changed in sequence, and the actual case of the utility model is printed by using a manual printing table, does not influence the subsequent aspects of automatic improvement, optimization and the like of printing tools, and belongs to the scope of the claims of the utility model.

Aiming at the external decoration spraying part with the silk-screen pattern mark, the utility model further provides a process design of the external decoration spraying part with the silk-screen pattern mark, which comprises the following steps:

step B1, product design and process planning: when the prior external decoration spraying part product is designed, the requirements of a silk-screen area, a surface shape and the like in the subsequent process implementation need to be considered, and the specific structure and the size of each external decoration spraying part are finished in data design and fixation;

step B2, mold development: designing a front mold and a rear mold of the mold, wherein the rear mold of the mold is embodied with a back related structure of an outer decorative plate body of an outer decorative spraying part; the front mold of the mold embodies a front related structure of an outer decorative plate body of an outer decorative spraying part; the mould positioning ring is a part where the front mould and the rear mould of the mould are butted with a nozzle of an injection molding machine;

step B3, developing silk-screen tooling ink: according to the size modeling requirement of the pattern mark on the surface of the outer decoration spraying part, corresponding films need to be customized and developed, and then a corresponding special screen printing plate and a corresponding screen printing workbench are manufactured; then, the standard color plates provided by customers are required to be contrasted synchronously, ink coatings meeting requirements are developed, and finally, the preparation work in the early stage of silk-screen printing is completed;

step B4, injection molding: the method comprises the following steps that a front mold and a rear mold of the mold are closed to form a hollow product-shaped cavity, plasticized rubber materials are pressed into the product-shaped cavity through a mold positioning ring and a runner, and the product-shaped cavity is completely filled and then cooled to obtain a required product; the rear mold of the mold plays a role in forming the surface structure of the product and ejecting the product after forming; the front mold of the mold plays a role in forming the front structure of the product to form the appearance surface of the surface A of the product; the mold back mold and the mold front mold are completely matched and sealed through parting surfaces to form a closed cavity space, and the matching clearance between the mold back mold and the mold front mold is zero clearance.

Step B5, screen printing spray forming: and B1-B4, completing preparation of the base material of the external decoration spraying part and the raw and auxiliary materials of the relevant tool for silk-screen printing, manufacturing the pattern mark according to the manufacturing method of the external decoration spraying part with the silk-screen pattern mark, and finally completing the production of the external decoration spraying part with the silk-screen pattern mark.

The mold positioning ring 8 is fixed on the bottom plate wall of the front mold of the mold, the mold positioning ring 8 is a key point for connecting the injection molding machine and the mold cavity, the rubber plasticized by the injection molding machine enters the closed cavity formed between the rear mold B plate 10 and the front mold A plate 9 through the position, and finally the required exterior plate body product with the silk-screen pattern mark exterior decoration spraying part is formed through cooling.

The details of the utility model are further explained below by taking the B-pillar outer decorative plate assembly with the silk-screen pattern mark as an example:

in the step B2, after the design of the mold is completed, a blank is ordered according to 3D data, then the roughing and tempering treatments and the waterway processing of the a plate (a front mold of the B pillar outer trim panel body, such as the front mold cavity 13 in fig. 6), the B plate (a rear mold of the B pillar outer trim panel body, such as the rear mold core 15 in fig. 7) and the sub-parts are respectively performed, then the next step is CNC semi-finishing and finishing of the cavity, high-speed milling of the core, then the electric spark discharge at the position of the core and the cavity part is performed, then the next step is the complete mold matching of the rear mold of the B pillar outer trim panel body, such as the rear mold core, the slide position and the whole flying mold of the front and rear mold parting surfaces, which is shown in fig. 7, the whole process reaches T0, preferably about 100 days of the manufacturing period is required, and after the whole mold matching is completed, the trial manufacturing of T0, T1, T2 … Tn and the like is arranged next step.

More specifically, fig. 5 is a schematic view of the whole B-pillar exterior sheathing board body mold, fig. 6 is a schematic view of the whole B-pillar exterior sheathing board body front mold, and fig. 7 is a schematic view of the whole B-pillar exterior sheathing board body rear mold. The whole body of the B-pillar outer decorative plate mould is shown in figure 5, a back mould core 15 represents a back related structure of a product in mould forming, and a thimble, a top block, an inclined top and the like are concentrated on the back mould core 15; the front mold cavity 13 represents the front relevant structure of the product in the mold forming, and the surface treatment requirements of the front relevant structure are high, such as polishing, dermatoglyph and the like; the mold positioning ring 8 is a butt joint part of a mold and a nozzle of an injection molding machine, a front mold A plate 9 and a rear mold B plate 10 form a hollow product-shaped cavity after being closed, plasticized rubber materials are pressed into the product-shaped cavity through the mold positioning ring 8 and a runner, and the product-shaped cavity is completely filled and then cooled to obtain a required product. The rear mold B plate 10 plays a role in forming the structure of the product and ejecting the product after forming; the front mould A plate 9 plays a role in forming the front structure of a product and forming the appearance surface of the A surface of the product; the rear mould B plate 10 and the front mould A plate 9 are sealed by complete matching of parting surfaces to form a closed cavity space, and the theoretical matching clearance between the rear mould B plate 10 and the front mould A plate 9 is zero clearance.

As shown in fig. 7, the rear die base plate 14 of the B-pillar outer decorative plate body carries and fixes an ejector plate, an ejector pin, a hot runner, a rear die guide pillar and an inclined ejector on the rear die; the rear mold core 15 plays a role of imitating the molded surface of the back structure of the product; the rear die guide post 16 plays a role in guiding the whole rear die into the cavity along the guide sleeve of the front die, so that the rear die is completely inosculated with the cavity and cannot be deviated; the rear mold frame 17 functions to fix all the ejector pins and the ejector blocks of the rear mold. The ejector plate is fixed on the rear mould base plate 14, the rear mould core 15 and the inclined ejector and the like are adjacently matched to form a complete product back structure molded surface, the ejector plate or the ejector rod is connected to the ejector plate and the base plate, the rear mould guide pillar 16 is fixed on the mould core base, and the rear mould base plate 14, the rear mould core 15, the rear mould guide pillar 16 and the rear mould base 17 finally form a whole rear mould module of the B-column exterior trim plate body mould.

The front mold of the B-pillar exterior trim panel body is shown in FIG. 6, and a front mold bottom plate 12 bears parts such as a cavity, a cooling system and the like; the front mold cavity 13 plays a role in forming the appearance surface structure of the surface A of the product; the front mold guide sleeve (guide rail) guides the rear mold guide post 16 in the rear mold of the B-column exterior trim panel body to reach a limited position along a correct track and is used for guiding and positioning the rear mold guide post 16, the front mold guide sleeve is positioned on the side wall of a front mold cavity, the front mold cavity is positioned on the front mold frame 11, and the front mold base plate 12, the front mold cavity 13, the front mold guide sleeve and the front mold frame form the whole front mold module of the B-column exterior trim panel body mold.

The spray painting and silk screen printing treatment process is carried out after the B-column exterior decoration plate body is subjected to injection molding, namely the treatment is carried out according to the manufacturing method of the exterior decoration spraying part with the silk screen pattern mark, and the specific details are as follows:

step S1, hanging the B-pillar exterior trim panel body injection molding material on a spraying hanger, then carrying out pretreatment, and carrying out primary wiping, secondary wiping and electrostatic dust removal by using special wiping liquid;

step S2, the B-pillar exterior trim spraying part base material processed in the step S1 continues to enter a primer spraying and leveling process along with the pipeline to form a primer layer 34, and the thickness of the primer layer is preferably controlled within the range of 10 microns to 20 microns;

step S3, the external decoration spraying part substrate with the bottom paint layer finished in the step S2 continues to enter a color paint spraying and leveling process along with the flow line, the substrate directly enters a high-temperature oven under the condition that the varnish process is not processed, the substrate is dried for 45 minutes in the environment of 80 +/-5 ℃ in the high-temperature oven along with the flow of the flow line, the color paint layer 33 is formed by curing, and the thickness of the color paint layer is preferably controlled within the range of 13 mu m to 17 mu m;

step S4, after the external decoration spraying part base material with the primer layer and the color paint layer, which is finished in the step S3, is dried, the base material is placed on a printing table 25, and the pattern mark is printed on the color paint layer in an ink coating mode through a screen printing plate and dried for 5 minutes to form the ink layer 32, wherein the thickness of the ink layer is preferably controlled within the range of 10 μm to 15 μm;

step S5, hanging the B-column external decorative plate external decorative part base material with the external decorative part base material of the bottom paint layer, the colored paint layer and the ink layer which is finished in the step S4 on a spraying hanging tool again, continuously entering a varnish spraying and leveling process along with a flow line, then sending the B-column external decorative plate external decorative part base material into a high-temperature oven, drying for 45 minutes in an environment of 80 +/-5 ℃ along with the flow line flow, forming a varnish layer 31 in the process, and preferably controlling the thickness of the varnish layer 31 within the range of 30 mu m to 35 mu m;

step S6, basically completing the spraying and silk-screen pattern identification of the B-column outer decorative plate body after the step S5 is completed, entering an appearance inspection and finishing processing link, and bonding the framework 2 together through glue to form a B-column outer decorative plate adhesive semi-finished product after the appearance is confirmed to be qualified; and then, finishing the subsequent sub-assembly process to form the B column outer decoration plate assembly in a final supply state. After finishing, further performing sampling inspection on each batch synchronously, mainly checking whether conventional quality indexes such as adhesive force, film thickness and hardness of the pattern identification position are qualified or not, performing an aging process, taking performance experiments such as xenon lamp aging resistance as a model test and an annual key experiment item, and managing and controlling.

The step S4 further describes the ink screen printing step as follows:

step S1, fixing the B-pillar exterior trim body exterior trim spraying part base material with the primer layer and the color paint layer, which is finished in the step S3, on the printing table top 25, wherein the printed product is preferably limited by a positioning block fixed on the printing table top, and the limited block is preferably fixed on the printing table top through hot melt adhesive, so that the positions of the printed matters placed on the printing table top every time are ensured to be consistent;

step S2, putting the screen printing plate 22 into the screen clamp 21, contacting two sides of the screen frame 27 with the screen clamp 21, and clamping the screen frame by adjusting the knob of the screen clamping screw 20 to rotate clockwise until the clamping and fixing work of the screen frame is completed;

step S3, which is critical to positioning the screen gap, which affects the position and definition of the printed pattern marks. When the counterweight balance weight 19 is seen from a front view angle, the screen clamp 21 drives the silk-screen printing plate 22 to turn over, and the counterweight balance weight 19 rotates clockwise or anticlockwise; when the screen printing plate rotates clockwise to the right position, determining the distance between the screen printing plate 22 and the printed object 23; namely, the vertical distance between the screen of the finger screen printing plate 28 and the printed matter 23 is further determined, preferably controlled between 2mm and 6mm, and the factors influencing the distance mainly comprise the tension of the screen cloth, the vertical angle of the center of the screen printing plate, the shape of the silk-screen printed matter, the surface material of the silk-screen printed matter, the thickness and viscosity of ink, the size of the inner diameter of the screen printing plate and the like, so that the final distance needs to be confirmed according to the actual situation, the distance between the screen printing plate and the printed matter is adjusted by turning over a counter weight balance weight 19, and adjusting a fine adjustment knob 18 of the height of the screen printing plate according to the actual situation, the screen printing plate is adjusted clockwise, adjusted counterclockwise, adjusted symmetrically left and right and adjusted synchronously, and finally adjusted to the proper distance height;

step S4, the positioning of the screen interval can affect the accuracy and consistency of the position of the printing pattern mark on the printed object; after the step B3 is completed, the front and rear fine adjustment knobs 24 are rotated clockwise and counterclockwise, and the front and rear fine adjustment knobs 24 finely adjust the front and rear positions of the printing table 25 and the printed matter 23 thereon; the left and right fine adjustment knobs 26 are rotated clockwise or anticlockwise, the left and right fine adjustment knobs 26 are finely adjusted to drive the printing table surface 25 and the left and right positions of the printed object 23 on the printing table surface to be finely adjusted, the front and rear fine adjustment knobs 24 and the left and right fine adjustment knobs 26 are matched to complete the positioning of the front, rear, left and right positions of the screen printing plate, and the consistency of the front, rear, left and right positions of the printed object 23 is ensured;

step S5, preparing and printing ink, firstly, preparing the ink, wherein the ink preparation mainly comprises the steps of preparing the selected ink main agent, the ink diluent and the curing agent according to requirements, carrying out test printing and colorimetric calibration on a standard plate, completing the ink preparation after the qualification is confirmed, then uniformly staining the prepared ink on the rubber scraper 29, slightly pressing the rubber scraper stained with the ink on the screen printing screen 28 through a rubber scraper handle, uniformly and centrally printing once from front to back at a constant speed, ensuring that the screen printing screen 28 is contacted with the surface of the printed object 23, then turning the counter weight balance weight 19 anticlockwise, lifting the screen printing screen 22 away from the printed object 23, observing the marking effect of the screen printing pattern, and confirming the clear and accurate printing completion.

According to the specification selection of the rubber scraper, the width of the rubber scraper is preferably confirmed according to the maximum width of the outline of the enlarged pattern mark 3 in FIG. 4, and is preferably 2mm-3mm longer than the maximum width of the pattern mark; the thickness of the rubber scraper is preferably defined in the range of 7mm-9mm and is divided into two types of flat opening and sharp opening, wherein the flat opening rubber scraper has strong adaptability and can bear larger force and is preferably used for scraping oil-based ink; the sharp-end rubber scraper has good flexibility and is suitable for printing water-scraping adhesive cement and irregular-shaped printing stocks, and the shape of the rubber scraper is combined with the actual condition for model selection; the hardness of the rubber scraper is preferably three 65 degrees, 75 degrees and 85 degrees, the higher the degree is, the higher the hardness of the rubber strip of the rubber scraper is, the lower the degree is, the softer the hardness of the rubber strip of the rubber scraper is, the preferred selection is 75 degrees, and the hardness is moderate, so that most of the silk-screen printing requirements can be met.

By using the process method, namely the external decoration spraying part with the screen printing pattern mark, the requirement of customized mass production of the personalized pattern mark of the external decoration spraying part of the automobile is met, the appearance shape of the automobile can be richer in visual impact, the automobile is bright and colorful, various defects of pattern fading, easiness in damage, scratch resistance, container washing after car washing and the like after a long time in the existing decoration pasting process are overcome, the texture and the grade of the external decoration part are integrally improved, the mass stable mass production technology of the external decoration spraying part of the automobile with the screen printing pattern mark is realized, the production and manufacturing technology of the external decoration spraying part of the automobile is innovated, the process method of an enterprise is effectively expanded, and the production and manufacturing level of the external decoration part of the enterprise is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention by way of mass production verification, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims (5)

1. The spray-coated part with the silk-screen pattern mark for the exterior trim is characterized by comprising an exterior trim spray-coated part base material and an exterior trim spray-coated part coating, wherein the exterior trim spray-coated part coating is coated on the exterior trim spray-coated part base material; the exterior spraying part coating comprises a paint coating and an ink coating; the external decorative spraying part with the silk-screen pattern mark is a plastic piece which is fixed in the middle of a front frameless door and a rear frameless door on the left side of the sheet metal vehicle body and plays a role in decorative buffering; the plastic part comprises an outer decorative plate body (1), an outer decorative plate framework (2) and silk-screen icons (3) on the outer decorative plate.

2. The screen-printed emblem exterior finishing component of claim 1, wherein the paint coating further comprises a primer layer, a pigmented paint layer, and a clear paint layer.

3. The exterior trim sprayed part with the silk-screen pattern logo according to claim 1, wherein the exterior trim sprayed part with the silk-screen pattern logo is a B-pillar exterior trim panel assembly with the silk-screen pattern logo.

4. The exterior trim spraying part with the silk-screen pattern logo according to claim 1, wherein the exterior trim skeleton (2) is used for fixing the exterior trim body (1), and the silk-screen icon (3) on the exterior trim is printed on the exterior trim body (1).

5. The spray-coated component with the silk-screen pattern mark for the exterior trim of claim 1, wherein the plastic component further comprises a sealing shock absorption foam (4), a buckle (5), a lower end positioning column (6) and an upper end positioning column (7), and the sealing shock absorption foam (4) and the buckle (5) are fixed on the framework (2) of the exterior trim board through assembly; the upper end positioning column (7) and the lower end positioning column (6) are aligned and positioned with the sheet metal hole of the whole vehicle, so that the installation consistency of the external decoration spraying parts with the silk-screen pattern identification is ensured.

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