Background
Present science and technology is constantly advancing, and people no longer only satisfy the performance requirement to the consumer product, also more and more high to product appearance requirement, like household electrical appliances and functional panel, cell-phone window lens and shell, washing machine control panel, refrigerator control panel, air conditioner control panel, motormeter dish and interior trim, house ornamentation product etc. the outward appearance decoration not only needs very high outward appearance requirement, still needs beautiful decorative pattern and 3D effect.
At present, the pattern making IN the mold can be divided into IN-mold decoration IML (IN-MOLDING LABEL), IN-mold thermal transfer IMR (IN-MOLDING-ROLLER), printing after the MOLDING of a resin product is finished and double-shot MOLDING through IN-mold decoration, and for the current IML mode, the main problems are that the production process is multiple, the process is complex, the production yield is low, and the method is not suitable for mass production; the decoration presented by the resin product is a 2D plane pattern, which is not suitable for making a complex arc curved surface, the pattern is not wear-resistant, and is not suitable for a beautiful resin appearance surface, and the injection molding and printing of the traditional resin product are respectively 2 independent workshops after the molding is finished, the surface of the injection molded product is likely to be contaminated with impurities in the transportation process, and simultaneously, the requirements on the environment of the printing workshop and the requirements of workers are very high; in addition, the common printing procedures are very complex, including surface cleaning, ink drying and the like, and meanwhile, the common printing qualification rate is low, so that production waste and industrial garbage are caused; the double-shot forming mode of decorating in the mold is only suitable for small and medium-sized products, the products are large in part at present, if double-shot decorating pattern forming is used, the mold cost is large, a machine table is too large to occupy a production field, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment of three-dimensional decorative pattern is realized to spraying in mould to solve the above-mentioned whole or partial technical problem that exist among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an equipment for realizing three-dimensional patterns by spraying in a mould, which comprises an injection molding side injection molding unit, a spraying side injection molding unit and an interchangeable rotary platform, wherein the injection molding side injection molding unit and the spraying side injection molding unit are arranged oppositely along the circumferential direction of the interchangeable rotary platform, the injection molding side injection molding unit and the spraying side injection molding unit are of split structures, and the injection molding side injection molding unit and the spraying side injection molding unit can be mutually matched; the surface of an injection molding cavity of the injection molding side injection molding unit is carved with a three-dimensional pattern surface.
Preferably, the injection side injection unit comprises an injection side front mold and an injection side rear mold, the injection side front mold is provided with an injection mold cavity, and the injection side rear mold is provided with a mold core matched with the injection mold cavity.
Preferably, the injection side rear mold is fixedly connected with the interchangeable rotary platform.
Preferably, the spraying side injection unit comprises a spraying side rear die and a spraying side front die, the spraying side front die is provided with a spraying cavity, and the depth of the spraying cavity is greater than that of the injection cavity.
Preferably, the rear spray side die is fixedly connected with the interchangeable rotary platform.
Preferably, the equipment for realizing the three-dimensional patterns by spraying in the mold further comprises a sliding seat, the sliding seat is respectively and fixedly arranged in front of the injection side rear mold and the spraying side rear mold, and the sliding seat is respectively and fixedly provided with an injection side front mold and a spraying side front mold.
Preferably, the injection molding side injection molding unit and the spraying side injection molding unit both comprise a feeding cylinder and a heating and feeding mechanism, the feeding cylinder is communicated with the heating and feeding mechanism, and a discharge port of the heating and feeding mechanism is connected with cavities of the injection molding side injection molding unit and the spraying side injection molding unit.
Preferably, the interchangeable rotary platform employs a numerically controlled indexing disk.
A method for realizing three-dimensional patterns by spraying in a mold comprises the following steps:
s1: pouring plastic into the injection side injection unit to complete injection molding of the injection side product, and pouring the special injection molding material and the replaceable spraying material into the spraying side injection unit to be fused into a spraying side injection molding material;
s2: sliding the injection side front mold and the spraying side front mold through a sliding seat to open the injection side injection unit and the spraying side injection unit;
s3: the position interchange of the injection side rear mold and the spraying side rear mold is completed through the autorotation of the interchange type rotating platform, and an injection side product comes in front of the spraying side front mold along with the injection side rear mold;
s4: closing the injection side rear die and the spraying side front die, closing the spraying side rear die and the injection side front die, injecting common injection molding materials into the injection side again, and injecting the injection side with the injection side injection molding materials fused in the step S1;
s5: step S2 is repeated, the final product is taken out on the spray side, and the injection side product is left in the injection side to be subjected to the next such spraying.
The utility model provides an equipment for realizing three-dimensional decorative pattern by spraying in mould, which realizes injection moulding and spraying on the same machine platform, solves the defects of over high cost of double-color forming decorative pattern, over large requirement of machine platform, and the like, can reduce cost for the product with larger size appearance decorative pattern, uses the product at the injection moulding side as a carrier by the principle of double injection moulding, and achieves the spraying effect of the product by using the injection moulding unit at the spraying side to replace the sprayed material through injection moulding; three-dimensional patterns are pressed on the surface of an injection product through the three-dimensional pattern surface engraved on the surface of the injection molding cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes in detail embodiments of the present invention with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding features. The figures are only schematic and are not necessarily drawn to scale.
Referring to fig. 1 and 2, the utility model provides a device for realizing three-dimensional patterns by spraying in a mold, which comprises an injection molding side injection molding unit, a spraying side injection molding unit and an interchangeable rotary platform 4, wherein the injection molding side injection molding unit and the spraying side injection molding unit are arranged oppositely along the circumferential direction of the interchangeable rotary platform 4, the injection molding side injection molding unit and the spraying side injection molding unit are both in a split structure, and the injection molding side injection molding unit and the spraying side injection molding unit can be mutually matched; the surfaces of injection molding cavities of the injection molding side injection molding units are all carved with three-dimensional pattern surfaces. The injection molding and the spraying are realized on the same machine table, the defects of high cost, high machine table requirement and the like of double-color molded patterns are overcome, the cost can be reduced for the product with the appearance patterns with larger size, the injection-molded side product is taken as a carrier through the double-injection molding principle, and the sprayed material is specially replaced on the surface of the product through injection molding by the spraying-side injection molding unit, so that the product spraying effect is achieved; three-dimensional patterns are pressed on the surface of an injection product through the three-dimensional pattern surface engraved on the surface of the injection molding cavity.
Referring to fig. 5 and 8, as an alternative embodiment, the injection side injection unit includes an injection side front mold 2 and an injection side rear mold 3, the injection side front mold 2 is provided with an injection mold cavity, and the injection side rear mold 3 is provided with a mold core matched with the injection mold cavity. The side front mould 2 of moulding plastics cooperatees through moulding plastics die cavity and core between the side rear mould 3 in order to form the cavity that is used for moulding plastics, and is concrete, and in figure 8, final product is the trough-shaped, and then the die cavity of moulding plastics can be for moulding plastics a recess of offering on the side front mould 2, and the core then is a square boss, and it leaves the space so that the material of moulding plastics gets into and takes shape to mould plastics between the cell wall of the side front mould 2 of moulding plastics and the side rear mould 3 compound die back boss form core of moulding plastics between the outer wall of recess form die cavity.
As an alternative embodiment, the injection-side rear mold 3 is fixedly connected with the interchangeable rotary platform 4, and the spraying-side rear mold 5 is fixedly connected with the interchangeable rotary platform 4. The injection side rear die 3 and the spraying side rear die 5 are connected with the interchangeable rotary platform 4 through bolts
As an alternative embodiment, the spraying side injection unit comprises a spraying side rear mold 5 and a spraying side front mold 6, the spraying side front mold 6 is provided with a spraying cavity, and the depth of the spraying cavity is larger than that of the injection cavity. The depth of the spraying cavity is larger than that of the injection molding cavity, so that a closed cavity is formed by the surface of the injection molding side product and the spraying side front mold, the injection molding side product is used as a carrier through a double-injection molding principle, the closed cavity is formed by the surface of the injection molding side product and the spraying side front mold, a special alternative spraying material is injected into the cavity and is injected on the surface of the injection molding side product, and a similar spraying effect is achieved.
As an optional implementation manner, the device for realizing the three-dimensional pattern by spraying in the mold further comprises sliding seats, the sliding seats are respectively and fixedly arranged in front of the injection side rear mold 3 and the spraying side rear mold 5, and the injection side front mold 2 and the spraying side front mold 6 are respectively and fixedly arranged on the sliding seats. The sliding seat is a fixed plate fixed with the ground and a hydraulic cylinder fixedly arranged on the fixed plate, and the movable end of the hydraulic cylinder is connected with the injection side front mold 2 or the spraying side front mold 6.
As an optional implementation manner, each of the injection-side injection unit and the spraying-side injection unit includes a feeding cylinder and a heating and feeding mechanism, the feeding cylinder is communicated with the heating and feeding mechanism, and a discharge port of the heating and feeding mechanism is connected with cavities of the injection-side injection unit and the spraying-side injection unit. The feeding barrel is an injection molding side injection plastic barrel 1, a spraying side injection plastic barrel 7 and a spraying side spraying barrel 8, the heating and feeding mechanism comprises a heating pipe and a screw rod, the screw rod is arranged inside the heating pipe and is coaxially arranged with the heating pipe, one end of the screw rod is connected with a motor, the injection molding side injection plastic barrel 1 is communicated with the heating pipe, a heating wire is laid on the outer wall of the heating pipe for heating, the screw rod conveys the raw material into a cavity from the heating pipe through the feeding barrel, and the raw material is heated in the heating pipe to be molten state.
As an alternative embodiment, the interchangeable rotary platform 4 employs a numerically controlled indexing disc.
A method for realizing three-dimensional patterns by spraying in a mold comprises the following steps:
s1: pouring plastic into the injection side injection unit to complete injection molding of the injection side product, and pouring the special injection molding material and the replaceable spraying material into the spraying side injection unit to be fused into a spraying side injection molding material;
s2: sliding the injection side front mold and the spraying side front mold through a sliding seat to open the injection side injection unit and the spraying side injection unit;
s3: the position interchange of the injection side rear mold and the spraying side rear mold is completed through the autorotation of the interchange type rotating platform, and an injection side product comes in front of the spraying side front mold along with the injection side rear mold;
s4: closing the injection side rear die and the spraying side front die, closing the spraying side rear die and the injection side front die, injecting common injection molding materials into the injection side again, and injecting the injection side with the injection side injection molding materials fused in the step S1;
s5: step S2 is repeated, the final product is taken out on the spray side, and the injection side product is left in the injection side to be subjected to the next such spraying.
As shown in fig. 1, the utility model comprises an injection side front mold 2, an injection side rear mold 3, a spraying side front mold 6 and a spraying side rear mold 5; the device comprises an injection side injection unit, a central interchangeable rotary platform 4 and a spraying side injection unit. The injection molding side injection unit and the spraying side injection unit are respectively arranged at the left side and the right side of the machine table. Adding common plastic into the injection side injection plastic cylinder 1, heating and melting the plastic and injecting the plastic into a cavity of the injection side front mold 2 after the injection side injection unit closes the mold, maintaining the pressure and cooling to finish injection molding of an injection side product; a three-dimensional pattern surface is processed on the surface of a cavity of the injection side front die 2 through a 6-axis numerical control laser engraving machine; the multi-axis numerical control laser engraving center is used for engraving patterns on the surface of the cavity in a layered mode, and the laser engraving precision can reach 0.003mm, so that the multi-layer pattern processing on the surface of the cavity is realized, the 3-dimensional stereoscopic effect is displayed on the surface of the cavity, and the product with the beautiful 3-dimensional effect is formed by injection molding and in-mold spraying
As shown in fig. 2, after the above steps are completed, the injection molding side injection molding unit is opened, the injection molded side injection molding product 9 can be seen, and three-dimensional patterns are formed on the surface of the injection molded side injection molding product 9;
after the above steps are completed, AS shown in fig. 3, the injection side rear mold 3 and the spraying side rear mold 5 are rotated 180 degrees by the central interchangeable rotary platform 4, the injection side rear mold 3 and the spraying side rear mold 5 are interchanged, the injection side product is also rotated 180 degrees, the spraying side injection unit is provided with 2 material cylinders, a special injection material cylinder and an alternative spraying material cylinder, the special injection material and the alternative spraying material are special modified materials, such AS pvc, AS and the like, 2 materials can be perfectly fused, the fused material can be injected into the spraying side injection unit by injection, and the fusion temperature is lower than the fusion temperature of the injection side product. As shown in figure 1, when the injection molding side product is injection molded, the special injection molding material and the replaceable spraying material are heated and fused to form the spraying side injection molding material.
After the steps are completed, the injection side rear mold 3 and the spraying side front mold 6 are closed, the spraying side rear mold 5 and the injection side front mold 2 are closed, the injection side is injected with a common injection molding material, the spraying side is injected with a mixed material of a special injection molding material and a replaceable spraying material, and the molding time of the injection side product is equal to that of the spraying side product through the adjustment of process parameters.
After the above steps are completed, the mold is opened and the painted side-painted product 10 is taken out, and the injection-molded side product 9 is left in the painted side rear mold 5 without being ejected, as shown in fig. 5.
After the above steps are completed, the mold is rotated 180 degrees by the center interchangeable rotary table 4, the spray side rear mold 5 and the injection side rear mold 3 are interchanged, and the injection side product is rotated 180 degrees, as shown in fig. 6.
As shown in fig. 7 and 8, after the above steps are completed, the injection side and the spraying side simultaneously inject the common injection material or the special injection material and the replaceable spraying material mixed material, the injection side produces the injection side injection product 9 again, and the spraying side injects the spraying material mixed material on the surface of the previous injection side injection product 9 to achieve the spraying effect.
The utility model discloses in, through the two injection moulding principle, the side product of will moulding plastics is the carrier, forms confined cavity at the side product surface of moulding plastics and spraying side front mould, moulds plastics the material of special substitution spraying in the cavity, and the very thin material layer of moulding plastics reaches product spraying effect on the product decorative pattern side.
The utility model discloses realize a method that three-dimensional decorative pattern is realized to spraying in mould, realize moulding plastics and spraying on same board, it is too high to have solved double-colored shaping decorative pattern cost, and shortcoming such as board demand is too big can reduce cost to the outward appearance decorative pattern product of great size.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.