CN115635628A

CN115635628A - 3D hollowed-out pouring seamless process

Info

Publication number: CN115635628A
Application number: CN202211320622.3A
Authority: CN
Inventors: 范永红
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-24

Abstract

The invention relates to the technical field of hollowed-out irrigation, and particularly discloses a 3D hollowed-out irrigation seamless process, which comprises the following steps: the production process comprises the steps of modeling, coating PET, impressing, coating PVC, coating a cloth net film, assembling, heating, attaching, plaster molding, resin pouring, frictioning, baking, transfer printing, demoulding, oil sealing and packaging and warehousing, wherein a finished product has a 3D effect and texture, the size and the dimension of the product can be freely selected, the process can be used for realizing industrial production line batch production, the qualification rate of the product is also more than 98%, the working efficiency is greatly improved (more than 3 thousands of products are produced per day per capita), the manufacturing cost is reduced, and the 3D hollowed-out pouring process product can enter daily life of people at a lower price.

Description

3D hollowed-out pouring seamless process

Technical Field

The invention belongs to the technical field of hollowed-out irrigation, and particularly relates to a 3D hollowed-out seamless irrigation process.

Background

The hollowed-out pouring resin ornament is incomparable with other ornaments due to the combination and matching functions of the metal material and the resin and the extremely strong plasticity. The characteristic of the hollow-out casting resin ornament enables the product to highlight the visual focus, and meanwhile, harmony is perfectly considered, so that the product looks very high in grade, but the production is not only a shaping task but also a direct influence on the texture effect of the product under the action of a flat silica gel mold, so that the conventional hollow-out casting resin ornament needs to be polished into a high-finish plane through multiple times of polishing in the manufacturing process, and therefore, not only are the material accessories greatly worn (the defective rate is more than 20%), but also the production efficiency is low (the average daily production is about 300), and more importantly, some products with large specifications cannot be produced through the conventional technology.

Along with the continuous improvement of the living standard of modern people, the aesthetic level of people breaks through the two-dimensional limitation and further approaches to the 3D real world, and because the prior art can not realize the 3D effect and texture required by people, the 3D hollow-out casting seamless process becomes a product required by people in sleep, and because the prior art is complex in manufacturing and can not realize industrial flow production, the low-efficiency high-loss is still a current technical problem, and because of various characteristics of the prior art, hollow-out casting workers with large specifications still can be used for casting

The process is as follows; the hanging picture, the ornament, the furnishing and the like become the blank of the current market and cannot enter the daily life of common people.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a 3D hollow-out pouring seamless process with high production efficiency and low manufacturing cost.

To achieve the above object, one of the objects of the present invention is to provide a 3D hollow-pouring seamless process, wherein the preparation method specifically comprises the following steps:

step 1, modeling: firstly, selecting the same texture part 2.5-3 times thicker than the hollow part to be produced as a mold seed, arranging the mold seed in a laser cutting die, molding the mold seed by jewelry wax in an inner carving mode, then obliquely placing the mold seed at an angle of 45 degrees, baking the mold seed into a 3D fluid shape at an angle of 45 degrees by open fire, copying the shape into a silica gel die, and finally punching the silica gel die along the metal texture of the hollow part to prepare the 3D fluid-shaped silica gel inner die;

step 2, coating PET: firstly, putting EVA into a hot-melting laminator for hot melting at 150-200 ℃, and then coating the EVA glue on a PET film with the thickness of 0.175MM through a laminator to prepare a 0.275MMPTE composite film;

step 3, cutting the PET composite film into required specifications by indentation, and punching corresponding hole positions by using a laser cutting die to manufacture a PET side die with the thickness of 0.275 MM;

step 4, coating PVC: firstly, putting EVA into a hot-melting ground glue passing machine for hot melting at 100-150 ℃, then coating the EVA glue on a PVC film with the thickness of 0.175MM through the glue passing machine for drying, and printing required pattern patterns on the surface of the EVA by using heat sublimation ink to prepare an outer film with the thickness of 0.326 MMPVC;

step 5, laying a net film: firstly, using longitude and latitude reticular cloth as a bottom die, then setting the height of the die to be 1-1.5MM, pouring the adjusted silica gel, then vacuumizing, strickling and placing the silica gel into an oven, and then installing a silica gel membrane which is dried for 60-80 minutes at 100-120 ℃ and has the thickness of 1.5MM on a stainless steel frame to form a silica gel cloth net membrane vacuum box;

step 6, assembling: firstly, superposing a PET side mold on a silica gel inner mold, then sleeving an electroplated metal hollow part in a 3D silica gel inner mold with the same texture, fixing a PVC outer membrane in a mesh membrane distribution vacuum box by using a 4-point positioning sleeve plate, and then connecting a Roots mercury vacuum unit;

step 7, heating: heating the PVC outer membrane in the vacuum box by using an infrared heating system until the outer surface temperature of the PVC outer membrane reaches 126 ℃ and then softening;

step 8, fitting: vacuumizing the PVC outer membrane softened at high temperature, stopping vacuumizing and turning off the temperature when the inner surface temperature reaches 150 ℃ and the inner mold, the outer mold, the side mold and the metal fittings are seamlessly and tightly combined into a whole when the negative pressure reaches-0.1 MPA, and cooling by water until the temperature of the 3D hollowed seamless body model at normal temperature is reached;

step 9, gypsum mold: firstly, placing a stainless steel frame on a PVC outer film of a 3D hollowed seamless body model, pouring the adjusted gypsum into the frame, and then strickling to prepare a gypsum protection model pouring table;

step 10, resin pouring: firstly removing the silica gel inner mold on the pouring table, and pouring the well-mixed resin adhesive into the 3D hollow fit mold from the side mold for pouring;

step 11, glue scraping: carrying out one-time vacuum treatment on the 3D hollow combined mould which is not poured, and then strickling off and collecting redundant glue on the side mould;

step 12, baking: putting the poured 3D hollow seamless die and a pouring table into an oven, firstly, using the oven at a low temperature of 56 ℃, starting the oven to 76 ℃ after 1 hour, and then baking the oven for 1 hour until the oven is dried;

step 13, transfer printing: taking the baked semi-finished product and the 3D seamless fit mould out of the pouring table, putting the semi-finished product and the 3D seamless fit mould into a cloth mesh membrane vacuum box, stopping vacuumizing when the negative pressure is-0.1 MPA, stopping heating when the temperature is raised to 236 ℃, and then performing air cooling;

step 14, demoulding: when the temperature is reduced to 52 ℃, the side die and the outer die are removed, and then the semi-finished product is horizontally placed on the screen plate;

step 15, oil sealing: putting the well-arranged semi-finished screen plate on a spraying table for spraying protective bright oil, and then putting the screen plate into an oven for drying;

step 16, packaging and warehousing: taking the baked products out of the oven, putting the baked products into a pallet paved with flannelette, classifying the products after the products are inspected to be qualified, and finally packaging the products individually and warehousing the products.

Preferably, in the step 2, the temperature in the hot-melt adhesive machine is 160 ℃.

Preferably, in the step 4, the temperature in the hot-melt adhesive machine is 120 ℃.

Preferably, in the step 5, firstly, the warp-weft mesh cloth is used as a bottom die, then the height of the die is set to be 1-1.5MM, then the adjusted silica gel is poured, then the vacuum is pumped and the die is strickled off and placed into an oven, and then the silica gel film which is dried at the temperature of 65 minutes and 116 ℃ and has the thickness of 1.5MM is installed on a stainless steel frame to form the silica gel cloth mesh film vacuum box.

The invention has the advantages and positive effects that:

the hollow-out pouring seamless product manufactured by the process flow is a breakthrough in the technical field in dimensionality, realizes products in the real world, presents a 3D effect and textures on the original plane, solves all problems in the prior art from a source die, avoids adverse effects on production, realizes flow line operation, achieves batch production, improves working efficiency (from about 300 per capita to more than 3 thousands per capita), greatly improves product quality (from less than 80% to more than 98% per capita), avoids pollution to the natural environment due to polishing and grinding, is a product with a certain basis developed from materials and cultures, brings brand new living and concept for decoration of the whole social life to enter people's daily life, and is well applied to beautifying home furnishings.

Detailed Description

The present invention is further explained with reference to the following examples, which are not intended to limit the present invention in any way.

Example (b):

firstly, selecting the same texture accessory 2.5-3 times thicker than the production accessory as a mould seed, using jewelry wax to make a 3D fluid silica gel inner mould through inner carving modeling, baking, duplicating and punching, then coating EVA on PET with the thickness of 0.175MM through 160-degree hot melting, making a PET side membrane with the thickness of 0.275MM through indentation and punching, then coating a PVC membrane with the thickness of 0.175MM on a PVC composite membrane with the thickness of 0.326MM through 126-degree hot melting EVA, printing pattern patterns on the surface of EVA through thermal sublimation ink to make a PVC outer membrane, then mounting the silica gel membrane which is dried at the temperature of 65 minutes and is made into the thickness of 1-1.5MM by taking a net as a mould on a stainless steel frame to form a silica gel cloth net membrane box, then sleeving the PET side mould and the electroplated metal hollow accessory at the position of 4-point fixed PVC outer membrane in the silica gel inner mould, fixing the PET side mould and the electroplated metal hollow accessory in the vacuum box, then performing infrared heating, starting vacuum skin when the surface of the PVC outer film reaches 126 ℃, stopping vacuumizing and then stopping temperature when the negative pressure reaches-0.1 MPA internal surface temperature to 150 ℃, then cooling by water until the temperature reaches normal temperature of the 3D hollow seamless composite mold, then pouring the adjusted gypsum on the PVC outer film of the 3D hollow seamless composite mold in a stainless steel frame to form a gypsum protection mold pouring table, then removing a silica gel inner mold on the pouring table, pouring the adjusted resin into the 3D hollow mold for pouring, then carrying out one-time evacuation on the 3D hollow mold which is not poured and the pouring table, then scraping and collecting the redundant glue on the side mold, putting the side mold into an oven for carrying out 56 ℃ 1 hour, then drying at 76 ℃ for 1 hour, then taking out the baked semi-finished product together with the 3D seamless composite mold from the pouring table and putting the semi-finished product into a cloth net film vacuum box, stopping vacuumizing when the negative pressure is-0.1 MPA, then stopping heating when the negative pressure is-236 ℃, and then air cooling is carried out, when the temperature is reduced to 52 ℃, the side die and the outer film are firstly removed, the semi-finished product is flatly put on the screen plate for spraying protection and bright oil, then the semi-finished product is put into an oven for drying, then the baked semi-finished product is put into a pallet on which flannelette is laid, then the semi-finished product is classified after being inspected to be qualified, and finally the semi-finished product is singly packaged and put into a warehouse.

In conclusion, the hollow-out pouring seamless product manufactured by the process flow is a breakthrough in the technical field in dimensionality, realizes a real-world product, presents a 3D effect and texture on an original plane, solves all problems of the prior art from a source die, avoids adverse effects on production, realizes flow line operation, and achieves batch production, so that the working efficiency is improved (from about 300 per capita to more than 3 thousands per capita), the product quality is greatly improved (from less than 80% to more than 98% per capita), meanwhile, the pollution caused by polishing and grinding to the natural environment is avoided, the process flow is a product which is material and developed to a certain foundation in daily life decoration, and new life and concept can be brought to beautifying of the whole social life and can be well applied to home decoration.

The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.

Claims

1. The 3D hollowed-out pouring seamless process is characterized in that: the preparation method specifically comprises the following steps:

step 3, indentation: cutting the PET composite film into required specifications, and punching corresponding hole sites by using a laser cutter die to manufacture a PET side die with the thickness of 0.275 MM;

step 4, coating PVC: firstly, putting EVA into a hot-melting ground glue passing machine for hot melting at 100-150 ℃, then coating the EVA glue on a PVC film with the thickness of 0.175MM through the glue passing machine for drying, and printing required pattern patterns on the surface of the EVA by using thermal sublimation ink to prepare a PVC outer film with the thickness of 0.326 MM;

step 11, glue scraping: carrying out one-time vacuum treatment on the 3D hollow combination die which is not poured well, and then strickling off the redundant glue on the side die;

step 14, demoulding: when the temperature is reduced to 52 ℃, the side mold and the outer mold are firstly removed, and then the semi-finished product is flatly placed on the net plate;

2. The 3D hollow-pouring seamless process according to claim 1, characterized in that: the temperature in the hot melt adhesive machine in the step 2 is 160 ℃.

3. The 3D hollow-pouring seamless process according to claim 1, characterized in that: the temperature in the hot melt laminator in the step 4 is 120 ℃.

4. The 3D hollow-pouring seamless process according to claim 1, characterized in that: in the step 5, firstly, longitude and latitude mesh cloth is used as a bottom die, then the height of the die is determined to be 1-1.5MM, then the adjusted silica gel is poured, then the vacuum is pumped and the die is strickled off and put into an oven, and then a silica gel film which is dried at the temperature of 65 minutes and 116 ℃ and has the thickness of 1.5MM is installed on a stainless steel frame to form the silica gel cloth net film vacuum box.