CN114905693A - Production method of air conditioner operation panel - Google Patents
Production method of air conditioner operation panel Download PDFInfo
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- CN114905693A CN114905693A CN202210530187.0A CN202210530187A CN114905693A CN 114905693 A CN114905693 A CN 114905693A CN 202210530187 A CN202210530187 A CN 202210530187A CN 114905693 A CN114905693 A CN 114905693A
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- ink
- cavity
- silk
- air conditioner
- operation panel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/12—Compression moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/14—Multicolour printing
- B41M1/18—Printing one ink over another
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14131—Positioning or centering articles in the mould using positioning or centering means forming part of the insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
- B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a production method of an air conditioner operation panel, which comprises the following steps: s1, performing silk-screen printing on the PET plastic film; s2, punching positioning holes in the silk-screen PET plastic film; s3, cutting the PET plastic film obtained in the step S2 to obtain a film covering sheet; s4, placing the film-coated sheet into a forming die, and forming the film-coated sheet; and S5, placing the formed film covering sheet into an injection mold for injection molding, and obtaining the air conditioner operation panel by injection molding. The required color can be silk-screened on the plastic film by silk-screening on the PET plastic film, so that the corresponding use requirement is met; the positioning hole is formed in the PET plastic film, so that the covering membrane can be conveniently fixed in the injection mould when the injection mould performs injection molding; through step S4, will cover the diaphragm earlier and carry out the shaping, be convenient for the shaping back and the corresponding combination of injection mould, realize moulding plastics to make and cover the diaphragm and can closely laminate on the panel of moulding plastics, take place the separation when having avoided the use, guaranteed operating panel' S normal use.
Description
Technical Field
The invention belongs to the field of processing of air conditioner accessories, and particularly relates to a production method of an air conditioner operation panel.
Background
The operation panel on the surface of the air conditioner is required to be in an arc shape due to the limitation of the shape of the cylindrical upright air conditioner, so that the air conditioner is installed and matched with the air conditioner. The existing air conditioner operation panel is directly obtained by injection molding in an injection molding mode and then is assembled with an air conditioner body. After the air conditioner operation panel is installed, the air conditioner operation panel is not greatly different from an air conditioner body, the identification degree is not high, and the decoration effect cannot be achieved. In order to improve the identification degree of an operation panel, a color printed covering film is adhered to the panel of a part of air conditioners, but after the covering film and the injection-molded panel are fixedly adhered, the phenomenon of untight adhesion is easy to occur along with the lapse of service time, and the use of the operation panel is influenced; and when printing on the cover film, only one color can be printed, so that the use is limited.
Disclosure of Invention
An object of the present invention is to provide an air conditioner operation panel production method capable of solving at least one of the above-described problems.
According to an aspect of the present invention, there is provided an air conditioner operation panel production method including the steps of:
s1, performing silk-screen printing on the PET plastic film;
s2, punching positioning holes in the silk-screen PET plastic film;
s3, cutting the PET plastic film obtained in the step S2 to obtain a film covering sheet;
s4, placing the film-coated sheet into a forming die, and forming the film-coated sheet;
and S5, placing the formed film covering sheet into an injection mold for injection molding, and obtaining the air conditioner operation panel by injection molding.
The beneficial effects of the invention are: the required color can be silk-screened on the plastic film by silk-screening on the PET plastic film, so that the corresponding use requirement is met; the positioning hole is formed in the PET plastic film, so that the covering membrane can be conveniently fixed in the injection mould when the injection mould performs injection molding; through step S4, will cover the diaphragm earlier and carry out the shaping, be convenient for the shaping back and the corresponding combination of injection mould, realize moulding plastics to make and cover the diaphragm and can closely laminate on the panel of moulding plastics, take place the separation when having avoided the use, guaranteed operating panel' S normal use.
In some embodiments, the step of silk-screening the PET plastic film in the step S1 specifically includes the following sequential steps:
s101, silk-screen printing a mirror silver layer on a PET plastic film, and then drying;
s102, adopting semi-permeable violet-blue ink for silk screen printing, and then drying;
s103, adopting semi-transparent white ink for silk screen printing, and then drying;
s104, adopting semi-permeable silver ink for silk screen printing, and then drying;
s105, printing twice by adopting circle gloss oil, and then drying;
s106, printing by adopting an adhesive, and then drying;
and S107, printing by using matte oil, and drying. Therefore, through each silk-screen process in the step S1, the film covering sheet after silk-screen printing can have the effect of semitransparent double-color dot-shaped colors, the whole film covering sheet is not printed into one color, and the coloring effect of the film covering sheet is good.
In some embodiments, the mirror silver layer in step S101 is formed by screen printing with an ink consisting of 87% by weight of mirror silver ink and 3% by weight of a curing agent, the mirror silver layer is screen-printed with 300-mesh screen printing, and the drying temperature in step S101 is 80-86 ℃ for 10 minutes. Therefore, the mirror surface silver layer can be firstly silk-screened on the film covering sheet, and the light transmittance of the PET transparent plastic film is reduced; and the combination uniformity of the mirror surface silver layer and the plastic film can be improved through the composition of the mirror surface silver layer.
In some embodiments, the semi-permeable violet-blue ink in step S102 is composed of the following components in parts by weight:
gloss oil 90%, blue ink 2%, violet ink 3%, green ink 2%, black ink 2% and white ink 1%;
and step S102, 300-mesh screen printing is adopted, the drying temperature in step S102 is 80-86 ℃, the drying time is 10 minutes, the light transmittance of the PET plastic mold after step S102 is 85-95%, and the haze is 0-5%. Therefore, after the covering film is subjected to silk-screen printing, purple and blue dot-shaped colors can be printed on the covering film through the component proportion of the semi-permeable violet-blue ink, two different color effects are achieved, and the light transmittance of the covering film is reduced.
In some embodiments, the semi-transparent white ink in step S103 is composed of the following components in parts by weight:
45% of gloss oil, 45% of white oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S103 is 6-8%, the drying temperature in the step S103 is 80-86 ℃, and the time is 10 minutes. Therefore, the semi-transparent violet ink can cover the semi-transparent violet ink, adjust the color displayed by the film covering sheet and effectively prevent the semi-transparent violet ink from fading in use; meanwhile, the integral light transmittance of the film-coated sheet is greatly reduced.
In some embodiments, the silver semi-permeable ink in step S104 is composed of the following components in parts by weight:
2.7% of pink ink, 87.3% of gloss oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S102 is 3-4.5%, the drying temperature in the step S104 is 80-86 ℃, and the time is 10 minutes. From this, carry out the silk screen printing through half silver-permeable printing ink for the tectorial membrane piece is whole to be silver-colored form after the silk screen printing, and makes two kinds of silk screen printing colours of step S102 can permeate through.
In some embodiments, the film covering sheet in step S3 includes a body portion and side edges, the side edges are disposed on two sides of the body portion, the positioning holes are located at the connection portions of the side edges of the two sides and the body portion, the forming mold in step S4 includes an upper mold and a lower mold, the lower mold is provided with a first cavity and a second cavity, the first cavity is downward concave and is arc-shaped, the second cavity is horizontally disposed, the second cavity is located on two sides of the first cavity, the second cavity is communicated with the first cavity, the upper mold is provided with a first punch and a second punch, the first punch corresponds to the first cavity, the second punch corresponds to the second cavity, the body portion corresponds to the first cavity and the side edges correspond to the second cavity during forming. Therefore, the body part can be molded into an arc-shaped surface through the molding die, and the side edge of the body part is kept horizontal, so that the whole film-coated sheet is not required to be molded into an arc shape, the overall height of the die can be greatly reduced, the steel material consumption of the die is reduced, and the die cost is greatly reduced; meanwhile, the whole height of the die is reduced, so that the requirements on the tonnage and the like of a machine table of the forming machine are reduced, and the forming time of a product is favorably shortened.
In some embodiments, the edge of one end of the first punch is provided with a protrusion, the protrusion and the second punch are respectively located at two opposite ends of the first punch, one end of the first punch is provided with two strip-shaped grooves, and the two strip-shaped grooves are respectively located at two ends of the protrusion. Therefore, the bulge is arranged, so that one end of the formed coating film can form a covered edge, and the covered edge can be conveniently attached to a panel in an injection molding manner; through the bar-shaped groove, the forming of the bulge can be facilitated, the laminating with the panel is facilitated, the bulge is separated from the two sides of the first punch, and when the bulge is formed in the edge covering process, the fold is generated at the edge, so that the product quality is guaranteed.
In some embodiments, after the cover film is taken out of the forming mold, the cover film is placed in the injection mold within 2 hours, the body part of the cover film is attached to the injection mold, injection molding is completed, and a plurality of salient points are arranged at the bottom of a cavity of the injection mold. From this, be equipped with a plurality of bumps through the die cavity bottom at the injection mould to the back of moulding plastics, the tectorial membrane forms the bump on the surface on the layer of moulding plastics, reaches operating panel surface unevenness's effect, even make operating panel surface have difficult unsmooth sense, convenient clean simultaneously has guaranteed the steadiness that the tectorial membrane piece combines with the layer of moulding plastics.
Drawings
Fig. 1 is a schematic structural view of a molding die in a manufacturing method of an air conditioner operating panel according to the present invention.
Fig. 2 is a schematic structural view of a lower die in the production method of the air conditioner operation panel of the present invention.
Fig. 3 is a schematic structural view of an upper die in the production method of the air conditioner operation panel of the present invention.
FIG. 4 is a schematic structural diagram of the formed lamination sheet in the production method of the air conditioner operation panel of the present invention.
Fig. 5 is a schematic structural diagram of a finished product obtained by the production method of the air conditioner operation panel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 5: the production method of the air conditioner operation panel comprises the following steps:
s1, screen printing a PET (Polyethylene terephthalate) plastic film;
s2, punching positioning holes in the silk-screen PET plastic film;
s3, cutting the PET plastic film obtained in the step S2 to obtain a film covering sheet;
s4, placing the film-coated sheet into a forming die, and forming the film-coated sheet;
and S5, placing the formed film covering sheet into an injection mold for injection molding, and obtaining the air conditioner operation panel by injection molding. Through the silk-screen printing of the step S1, the transparent PET plastic film can be printed to obtain the required color, so that the use requirement of the air-conditioning operation panel is met; step S3, when cutting, the cutting is carried out according to the size and the shape of the operation panel, so that the size requirement of the air conditioner operation panel can be met when the subsequent molding and injection molding are facilitated; step S4 is carried out after cutting, so that the formed film covering sheet can be well attached to an injection mould; through having seted up the locating hole in step S2, can be so that cover the diaphragm when placing at the injection mould, insert the locating hole on the corresponding dead lever on the injection mould, be convenient for to the fixed of cover the diaphragm position, cover the diaphragm and take place to remove when preventing to mould plastics, guaranteed that the diaphragm can closely laminate with the layer of moulding plastics, improved life greatly.
In the step S1, silk screen printing is carried out on one side surface of the PET plastic film, and the silk screen printing specifically comprises the following sequential steps:
s101, silk-screening a mirror silver layer on a PET plastic film, and then drying to enable the plastic film to be in the color of mirror silver after silk-screening;
s102, adopting semi-permeable violet-blue ink for silk screen printing, and then drying;
s103, adopting semi-transparent white ink for silk screen printing, and then drying;
s104, adopting semi-permeable silver ink for silk screen printing, and then drying;
s105, printing twice by adopting circle gloss oil, and then drying;
s106, printing by adopting an adhesive, and then drying;
and S107, printing by using matte oil, and drying.
The mirror silver layer in the step S101 is formed by silk-screen printing of ink consisting of 87% of mirror silver ink and 3% of curing agent in percentage by weight, 300-mesh silk-screen printing is adopted during silk-screen printing, and the drying temperature in the step S101 is 80-86 ℃ for 10 minutes. And when the mirror silver layer is subjected to silk-screen printing, the scraper of the silk-screen printing is inclined by 15 degrees, so that the ink can be printed uniformly. The mirror silver ink is produced by adopting a 500H model of Mingteng printing material company Limited in Dongguan; the curing agent is produced by a Mingteng printing material Co, Inc. of Dongguan, with a model number of 105. By processing the PET plastic film in the step S101, a corresponding extinction effect can be achieved, and the plastic film is prevented from being in a transparent state. The adhesive property of the ink and the plastic film can be enhanced through 3% of the curing agent, and the mirror surface silver layer can be tightly attached to the plastic film.
The semi-permeable violet-blue ink in the step S102 comprises the following components in percentage by weight:
gloss oil 90%, blue ink 2%, violet ink 3%, green ink 2%, black ink 2% and white ink 1%;
and step S102, 300-mesh screen printing is adopted, the drying temperature in step S102 is 80-86 ℃, the drying time is 10 minutes, the light transmittance of the PET plastic mold after step S102 is 85-95%, and the haze is 0-5%. Wherein, in the silk-screen printing step, the scraper of the printing machine is also inclined by 15 degrees. The gloss oil in this step was manufactured by ink of the Japan empire, Inc., type IPX-001; the blue ink was manufactured by the ink company, Imperial Japan, with the model number IPX 391; the purple ink was manufactured by the Japan Imperial ink corporation, model number IPX 821; the green ink was manufactured by the Japan Imperial ink company, model number IPX 791; the black ink was manufactured by the Japan Imperial ink corporation, model number IPX 971; the white ink was manufactured by the Nippon imperial ink company, model IPX 675.
Through adopting the semi-permeable violet-blue ink to carry out silk-screen printing, when printing, the ink is printed on the mirror silver layer through the silk screen after passing through the silk screen to form a plurality of purple and blue printing points, so that the color on the final film covering sheet forms two points with different colors, and the defect that the existing film covering sheet can only print a single color is overcome.
In the actual use process, after the mirror silver layer is printed and dried, the printed characters on the air conditioner operation panel are printed and dried, and then the step S102 is performed.
The semi-transparent white ink in the step S103 comprises the following components in parts by weight:
45% of gloss oil, 45% of white oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S103 is 6-8%, the drying temperature in the step S103 is 80-86 ℃, and the time is 10 minutes. Wherein, in the silk-screen printing step, the scraper of the printing machine is also inclined by 15 degrees. The gloss oil was manufactured by the ink company, type IPX-001, of the Japan Imperial; the white oil was manufactured by the ink company, type IPX675, of the Japan empire; the curing agent was manufactured by Nippon imperial ink corporation, model 240. Through the printing of the semi-transparent white ink, the color points in the step S102 can be kept stable, and the stability of the color of the film covering sheet can be guaranteed when the film covering sheet is used subsequently.
The semi-permeable silver ink in the step S104 comprises the following components in parts by weight:
2.7% of pink ink, 87.3% of gloss oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S102 is 3-4.5%, the drying temperature in the step S104 is 80-86 ℃, and the time is 10 minutes. Wherein the manufacturer of the pink ink is the Nippon empire ink company with the model number of 882; the gloss oil was manufactured by the ink company, type IPX-001, of the Japan Imperial; the curing agent was manufactured by Nippon empire ink corporation, model 240. Thus, the entire cover sheet can be silver in step S104, and the colors of the two color dots printed in step S102 are not hidden.
As shown in fig. 1 to 4, the film covering sheet 3 in step S3 includes a main body 31 and side edges 32, the side edges 32 are disposed on two sides of the main body 31, the positioning holes 33 are located at the connecting portions of the side edges of the two sides and the main body 31, the molding die 4 includes an upper die 1 and a lower die 2 in step S4, the lower die 2 is provided with a first cavity 21 and a second cavity 22, the first cavity 21 is concave downward and is arc-shaped, the second cavity 22 is horizontally disposed, the second cavity 22 is located on two sides of the first cavity 21, the second cavity 22 is communicated with the first cavity 21, the upper die 1 is provided with a first punch 11 and a second punch 12, the first punch 11 corresponds to the first cavity 21, the second punch 12 corresponds to the second cavity 22, the main body 31 corresponds to the first cavity 21 and the side edges 32 correspond to the second cavity 22 during molding.
The lamination sheet 3 is placed between the upper die 1 and the lower die 2 during forming, and the upper die 1 moves downwards, so that the first punch 11 and the second punch 12 move downwards to form a sheet (shown in fig. 4) through cooperation with the first cavity 21 and the second cavity 22. Under the action of the first punch 11 and the first cavity 21, the main body 31 is shaped into an arc, so that the main body is attached to the corresponding arc surface of the injection mold of the control panel. Under the action of the second punch 12 and the second cavity 22, the sheet is formed into long straight edges on the side edges 32 on both sides, and after the two straight edges are formed, the two side edges 32 on both sides are fixed with a positioning rod and other structures on an injection mold of the control panel.
The laminating sheet 3 is a sheet, so that the laminating sheet is easily attached to an injection mold of a subsequent operation panel; therefore, the structure formed by the side edge 32 through the second punch 12 is in a thin strip shape and is fixed on the injection mold through the positioning hole 33, so that the side edge is easily attached to the injection mold during injection molding, and the formed film covering sheet can be tightly attached to an injection molding operation panel.
When the forming die 4 is used for forming, the whole covering membrane does not need to be formed into a semicircle shape matched with the shape of the air conditioner, and only the body part 31 with larger contact area at the first cavity 21 needs to be formed into an arc shape, so that the overall height of the die is greatly reduced, the steel material consumption of the die is reduced, and the die cost is greatly reduced; meanwhile, the whole height of the die is reduced, so that the requirements on the tonnage and the like of a machine table of the forming machine are reduced, and the forming time of a product is favorably shortened.
The first cavity 21 is recessed downward to a depth greater than that of the second cavity 22. In actual use, the depth of the second cavity 22 is larger than the thickness of the sheet, and straight edge forming on two sides of the second punch 12 can be achieved. From this, need not to be the arc with the rectangular limit shaping of both sides, greatly reduced the whole height of mould, reduced the mould cost.
The edge of one end of first drift 11 is equipped with arch 13, and arch 13 and second drift 12 are located the relative both ends of first drift 11 respectively, and the one end of first drift 11 is equipped with bar groove 14, and bar groove 14 is two, is located the both ends of arch 13 respectively. Through being equipped with arch 13, can correspondingly form bordures at the edge of fashioned sheet, when the follow-up operating panel injection moulding of being convenient for, closely laminate with the part of moulding plastics of operating panel, improve the compactness of tectorial membrane and operating panel laminating. The first cavity of the lower die 2 is provided with two lugs 24, and the two lugs 24 correspond to the two strip-shaped grooves 14 respectively. After the lug 24 is matched with the strip-shaped groove 14, a notch corresponding to the lug 24 can be formed on the sheet; by arranging the convex block 24, the bulge 13 is disconnected with two sides of the first punch 11 when the corresponding edge is formed, and the raised corners are prevented from being wrinkled.
And (3) taking the coated membrane 3 out of the forming mold, placing the coated membrane in an injection mold within 2 hours, attaching the body part of the coated membrane to the injection mold, and finishing injection molding, wherein the bottom of a cavity of the injection mold is provided with a plurality of salient points. The coating film 3 is placed in the injection mold for injection molding in a short time, so that the body part 31 can keep an arc state before the coating film is placed in the injection mold, and the coating film is convenient to be attached to the injection mold; the positioning holes on the side edges 32 are fixed on the positioning rods in the injection mold cavity, so that the laminating sheet is matched with the injection mold, and then injection molding is performed to obtain a finished product (as shown in fig. 5, since concave and convex points formed on the laminating sheet after injection molding are dense, the concave and convex points are not shown in fig. 5). Thereby make and cover diaphragm and the layer of moulding plastics can closely laminate.
Through being equipped with the bump in the die cavity bottom at the injection mould, can be so that the finished product after moulding plastics the surface can with unsmooth sense, reach the effect of cloth art panel, convenient clean simultaneously.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (9)
1. The production method of the air conditioner operation panel is characterized by comprising the following steps:
s1, carrying out silk-screen printing on the PET plastic film;
s2, punching positioning holes in the silk-screen PET plastic film;
s3, cutting the PET plastic film obtained in the step S2 to obtain a film covering sheet;
s4, placing the film-coated sheet into a forming die, and forming the film-coated sheet;
and S5, placing the formed film covering sheet into an injection mold for injection molding, and obtaining the air conditioner operation panel by injection molding.
2. The production method of the air conditioner operation panel as claimed in claim 1, wherein the step of performing silk-screen printing on the PET plastic film in the step S1 specifically comprises the following sequential steps:
s101, silk-screen printing a mirror silver layer on a PET plastic film, and then drying;
s102, adopting semi-permeable violet-blue ink for silk screen printing, and then drying;
s103, adopting semi-transparent white ink for silk screen printing, and then drying;
s104, adopting semi-permeable silver ink for silk screen printing, and then drying;
s105, printing twice by adopting circle gloss oil, and then drying;
s106, printing by adopting an adhesive, and then drying;
and S107, printing by using matte oil, and drying.
3. The production method of the air conditioner operation panel as recited in claim 2, wherein the mirror silver layer in the step S101 is formed by silk-screen printing of ink consisting of 87% of mirror silver ink and 3% of curing agent by weight, the mirror silver layer is silk-screen printed by 300-mesh screen printing, and the drying temperature in the step S101 is 80-86 ℃ for 10 minutes.
4. The air conditioner operation panel production method as claimed in claim 2 or 3, wherein the semi-permeable violet-blue ink in the step S102 is composed of the following components in parts by weight:
gloss oil 90%, blue ink 2%, violet ink 3%, green ink 2%, black ink 2% and white ink 1%;
the step S102 is implemented by 300-mesh screen printing, the drying temperature in the step S102 is 80-86 ℃, the drying time is 10 minutes, the light transmittance of the PET plastic mold after the step S102 is 85-95%, and the haze is 0-5%.
5. The air conditioner operation panel production method as claimed in claim 4, wherein the semi-transparent white ink in the step S103 is composed of the following components in parts by weight:
45% of gloss oil, 45% of white oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S103 is 6-8%, the drying temperature in the step S103 is 80-86 ℃, and the time is 10 minutes.
6. The air conditioner operation panel production method as claimed in claim 5, wherein the silver semi-permeable ink in the step S104 is composed of the following components in parts by weight:
2.7% of pink ink, 87.3% of gloss oil and 10% of curing agent;
the light transmittance of the PET plastic mold after the step S102 is 3-4.5%, the drying temperature in the step S104 is 80-86 ℃, and the time is 10 minutes.
7. The air conditioner operation panel production method as claimed in claim 6, wherein the lamination sheet (3) in the step S3 includes a body portion (31) and side edges (32), the side edges (32) are provided on both sides of the body portion (31), the positioning holes (33) are located at the junctions of the side edges of both sides and the body portion (31), the molding die (4) in the step S4 includes an upper die (1) and a lower die (2), the lower die (2) is provided with a first cavity (21) and a second cavity (22), the first cavity (21) is downwardly concave and has an arc shape, the second cavity (22) is horizontally arranged, the second cavity (22) is provided on both sides of the first cavity (21), the second cavity (22) is communicated with the first cavity (21), the upper die (1) is provided with a first punch (11) and a second punch (12), the first punch (11) corresponds to the first cavity (21), the second punch (12) corresponds to the second cavity (22), the body (31) corresponds to the first cavity (21) and the side (32) corresponds to the second cavity (22) during molding.
8. The air conditioner operation panel production method as claimed in claim 7, wherein the edge of one end of the first punch (11) is provided with a protrusion (13), the protrusion (13) and the second punch (12) are respectively located at opposite ends of the first punch (11), one end of the first punch (11) is provided with a strip-shaped groove (14), and the two strip-shaped grooves (14) are respectively located at both ends of the protrusion (13).
9. The production method of the air conditioner operation panel as claimed in claim 8, wherein the membrane covering sheet (3) is placed in the injection mold within 2 hours after being taken out of the molding mold, and the body of the membrane covering sheet is attached to the injection mold to complete injection molding, and the bottom of the cavity of the injection mold is provided with a plurality of salient points.
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