Manufacturing method and manufacturing device of glass-imitating refrigerator air duct decoration panel and refrigerator air duct

Abstract

The invention belongs to the technical field of refrigerator air ducts, and particularly discloses a manufacturing method and device of a glass-imitating refrigerator air duct decoration panel and a refrigerator air duct. According to the glass-imitating refrigerator air duct decoration panel manufactured through the manufacturing method of the glass-imitating refrigerator air duct decoration panel, the production cost is reduced through raw material screening and production process simplification, meanwhile, the weight of the manufactured decoration panel is reduced, the surface of the manufactured decoration panel is provided with a scratch-resistant coating, the abrasion resistance is greatly improved, and meanwhile the scratch resistance of the manufactured decoration panel is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerator air ducts, and in particular relates to a manufacturing method and a manufacturing device of a glass-like refrigerator air duct decorative panel and a refrigerator air duct. Background Art

[0002] Refrigerators have become a must-have item for modern families, and their technological progress and functional optimization have always been the focus of the home appliance industry. In recent years, air-cooled refrigerators have gradually replaced direct-cooled refrigerators with their advantages such as frost-free and uniform cooling. In the design of air-cooled refrigerators, an air duct is generally set on the back of the refrigerator compartment of the air-cooled refrigerator. The air duct design of air-cooled refrigerators is particularly critical, which not only affects the refrigeration efficiency of the refrigerator, but also directly affects the temperature distribution inside the refrigerator and the food preservation effect. In order to improve the grade and attractiveness of the product, refrigerator manufacturers often decorate the refrigerator's refrigerator compartment by bonding glass on the panel on the front of the air duct, which can not only increase the overall beauty of the refrigerator, but also increase the product selling point and enhance the product strength.

[0003] Specifically, the advantage of glass laminated panels is their good transparency and glossiness, which can clearly display the food and layout inside the refrigerator, making it more convenient and quick for users to use. At the same time, glass is easy to clean and maintain, which can keep the refrigerator beautiful and hygienic for a long time.

[0004] As a duct decorative panel, the glass laminated panel has a transparent surface and the background can be made of multiple colors. Although it is obviously more upscale than the traditional plastic duct panel, this kind of duct with glass decorative panel also has some disadvantages. The main ones are as follows: First, the thickness of the glass is usually 3mm. If the panel is relatively large, the glass is relatively heavy, which increases the load-bearing capacity of the entire duct assembly. In order to ensure the installation of the duct and the bumpy impact on the duct during the logistics process, the material cost and packaging cost are often increased, so as to achieve the purpose of fixing the duct assembly and preventing the duct assembly from tipping over; second, this kind of glass duct decorative panel is relatively expensive, which increases the cost of the product and invisibly increases the burden on consumers. In the prior art, transparent plastic materials such as PMMA or PC are often used to replace glass, but the production process is complicated and the production cost is high. In addition, the laminated panels prepared using this material also have problems such as insufficient surface hardness, scratch resistance, and poor impact resistance. Summary of the invention

[0005] The purpose of the present invention is to overcome the above problems existing in the prior art and to provide a method for manufacturing a glass-like refrigerator air duct decorative panel, a manufacturing device and a refrigerator air duct. The glass-like refrigerator air duct decorative panel prepared by the method for manufacturing a glass-like refrigerator air duct decorative panel can reduce production costs through raw material screening and simplified production processes. At the same time, the weight of the prepared decorative panel is reduced, and the surface has an anti-scratch coating, which greatly improves the wear resistance and also improves its scratch resistance.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides a method for manufacturing a glass-like refrigerator air duct decorative panel, the manufacturing method comprising the following steps:

[0008] S1. After drying, add the plastic particles into the hopper of the extruder;

[0009] S2, the plastic particles are stirred, heated and melted in the extruder, extruded through an extrusion die, and then rolled by a hot pressing roller to obtain a sheet;

[0010] S3. The board is cooled and shaped in a constant temperature cold water pool, and then dried in an oven. A hardening liquid is coated on the surface of the board through a coating mechanism, and finally enters a UV curing room for curing to prepare a glass-like refrigerator air duct decorative panel.

[0011] Furthermore, the plastic particles are highly transparent plastic particles.

[0012] Furthermore, in the high-transmittance plastic particles, the high-transmittance plastic is GPPS or ABS.

[0013] In a second aspect, the present invention provides a manufacturing device for a glass-like refrigerator air duct decorative panel, comprising an extrusion die head, a hot pressing roller, a constant temperature cold water pool, an oven, a coating mechanism and a UV curing chamber which are arranged in sequence from left to right.

[0014] Furthermore, a guide roller 1 and a guide roller group are respectively provided at the left end and the right end above the constant temperature cold water pool.

[0015] Furthermore, the guide roller group includes a plurality of guide rollers arranged in parallel.

[0016] Furthermore, a plurality of guide rollers are arranged at intervals from left to right.

[0017] Furthermore, the number of the coating mechanisms is not less than one.

[0018] Furthermore, the coating mechanism comprises a material storage tank, a coating roller and a metering roller arranged below the material storage tank, and the material storage tank is provided with a hardening liquid;

[0019] A gap is formed between the coating roller and the metering roller for the hardening liquid to flow out;

[0020] A baffle is provided at the lower end of the coating roller.

[0021] In a third aspect, the present invention provides a refrigerator air duct, comprising a plastic air duct and a glass-like refrigerator air duct decorative panel arranged on the front side of the plastic air duct, wherein the glass-like refrigerator air duct decorative panel is prepared by a manufacturing method of a glass-like refrigerator air duct decorative panel provided in an embodiment of the first aspect of the present invention.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention provides a method for manufacturing a glass-like refrigerator air duct decorative panel, wherein plastic particles are dried, stirred, heated to melt, extruded, and calendered to prepare a plate, the plate is cooled, shaped, and dried, and a hardening liquid is coated on the surface, and finally the plate is cured to prepare a glass-like refrigerator air duct decorative panel. The process is simple, and the hardening liquid is coated on the surface of the prepared plate, so that the surface of the plate obtains a high-hardness anti-scratch coating, which greatly improves its wear resistance and scratch resistance.

[0024] 2. The present invention also provides a manufacturing device for imitation glass refrigerator air duct decorative panels, which has a certain production continuity and is suitable for mass production of imitation glass refrigerator air duct decorative panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 is a schematic structural diagram of Embodiment 2 of the present invention;

[0027] Figure 2 is a schematic structural diagram of a coating mechanism according to Embodiment 2 of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the glass-like refrigerator air duct decorative panel of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the plastic air duct of the present invention.

[0030] Among them, the attached drawing reference numerals are: 1, extrusion die head; 2, hot pressing roller; 3, sheet; 4, guide roller 1; 5, constant temperature cold water pool; 6, guide roller group; 7, oven; 8, hardening liquid; 9, metering roller; 10, storage tank; 11, coating roller; 12, baffle; 100, coating mechanism; 13, UV curing chamber; 61, guide roller 2; 200, plastic air duct; 300, imitation glass refrigerator air duct decorative panel; 400, display module; 500, one-way perspective bright silver film; 600, display window; 700, PET double-sided tape; 101, "eye" shaped structure. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] Embodiment 1

[0034] This embodiment provides a manufacturing method for an imitation glass refrigerator air duct decorative panel, and the manufacturing method includes the following steps:

[0035] S1. After drying the plastic particles, add them to the hopper of the extruding machine; among them, the plastic particles are high-transparency plastic particles, and the high-transparency plastic can be GPPS or ABS;

[0036] S2. The plastic particles are stirred by the screw in the extruding machine, pushed into the barrel for heating and melting, then extruded through the slit of the extrusion die head 1, and then obtained the sheet 3 after being calendered by the hot pressing roller 2;

[0037] S3. The sheet 3 is cooled and shaped in the constant temperature cold water pool 5, that is, the sheet 3 is cooled by water cooling, then dried in the oven 7, the hot air in the oven circulates to remove the moisture on the surface of the sheet, the hardening liquid is coated on the surface of the sheet by the coating mechanism 100, and finally enters the UV curing chamber 13 for curing to prepare the imitation glass refrigerator air duct decorative panel;

[0038] S4. The imitation glass refrigerator air duct decorative panel is cut by a cutter to obtain an imitation glass refrigerator air duct decorative panel with a specific size.

[0039] In this embodiment, the purpose of applying the hardening liquid is to provide the surface of the transparent plate with a scratch-resistant coating so that the surface hardness can reach above 2H.

[0040] The present embodiment provides a method for manufacturing a glass-like refrigerator air duct decorative panel, wherein plastic particles are dried, stirred, heated to melt, extruded, and calendered to prepare a plate, the plate is cooled, shaped, and dried, and then a hardening liquid is coated on its surface, and finally, the plate is cured to prepare a glass-like refrigerator air duct decorative panel. The process is simple, and the hardening liquid is coated on the surface of the prepared plate, so that the surface of the plate obtains a high-hardness anti-scratch coating, which greatly improves its wear resistance and scratch resistance.

[0041] Example 2

[0042] like Figure 1 to Figure 2 As shown, this embodiment provides a manufacturing device for a glass-like refrigerator air duct decorative panel, comprising an extrusion die head 1, a hot pressing roller 2, a constant temperature cold water pool 5, an oven 7, a coating mechanism 100 and a UV curing chamber 13, which are sequentially arranged from left to right;

[0043] A guide roller 4 and a guide roller group 6 are respectively provided at the left and right ends above the constant temperature cold water pool 5;

[0044] Specifically, the guide roller group 6 includes a plurality of guide rollers 61 arranged in parallel; the plurality of guide rollers 61 are arranged at intervals from left to right.

[0045] In the process of producing the glass-like refrigerator air duct decorative panel by using the manufacturing device, the plastic particles are dried, stirred and mixed, heated and melted, extruded through the slit of the extrusion die 1, and then rolled by the hot pressing roller 2 to form a plate 3, which is guided by the guide roller 4 into the constant temperature cold water pool 5 for cooling. The guide roller 4 is provided to play a role in conveying and guiding the plate 3;

[0046] A guide roller group 6 is provided to transfer the cooled plate 3 to the subsequent process via the guide roller group 6;

[0047] The number of coating mechanisms 100 is not less than one; multiple coating mechanisms 100 are provided to facilitate coating different coatings on the plate 3 according to actual process requirements;

[0048] The coating mechanism 100 includes a material storage tank 10, a coating roller 11 and a metering roller 9 arranged below the material storage tank 10, and a hardening liquid is arranged in the material storage tank 10;

[0049] A gap is formed between the coating roller 11 and the metering roller 9 for the hardening liquid to flow out;

[0050] A baffle 12 is provided at the lower end of the coating roller 11; the baffle 12 is provided at the lower end of the coating roller 11 and is used to guide the hardening liquid flowing to the outer surface of the coating roller 11;

[0051] Specifically, in order to make the surface hardness of the plate 3 reach above 2H, a hardening liquid is coated on its surface through the coating mechanism 100. The hardening liquid is stored in the storage tank 10, flows out through the discharge port at the bottom of the storage tank 10, and is quantitatively supplied to between the coating roller 11 and the metering roller 9. The hardening liquid 8 quantitatively supplied through the storage tank 10 is metered by the metering roller 9, and then flows downward along the coating roller 11 and the baffle 12 to form a coating liquid curtain, so that it can be evenly coated on the moving plate 3.

[0052] Example 3

[0053] The present embodiment provides a refrigerator air duct, comprising a plastic air duct and a glass-like refrigerator air duct decorative panel arranged on the front side of the plastic air duct, the glass-like refrigerator air duct decorative panel is prepared by a manufacturing method of a glass-like refrigerator air duct decorative panel provided in Example 1.

[0054] The high-transparency plastic plate with hardened surface (i.e., glass-like refrigerator air duct decorative panel) is used as the substrate. In actual use, it can also be screen-printed according to the panel pattern provided by the user. Specifically, the screen-printing method is as follows:

[0055] S1. Prepare corresponding color ink and one back coating ink according to the required color type;

[0056] S2. According to the number of colors required, multiple screen printing stencils are newly opened. In actual use, if n colors are required, (n+1) screen printing stencils need to be newly opened; one of the screen printing stencils is used for printing with back-coated ink;

[0057] S3. According to the process arrangement, screen print multiple colors separately. During the screen printing process, screen print one color at a time, dry it, and then screen print the next color. Screen print multiple colors in sequence, dry it, and then screen print a layer of back-coated ink.

[0058] Among them, during the silk-screen printing process, the role of the silk-screen back-coating ink is to protect the various colors of silk-screen printing in the previous process and avoid scratching the ink and leaking the bottom.

[0059] Example 4

[0060] like Figure 3 to Figure 4 As shown, in this embodiment, a refrigerator air duct is provided, which is different from Embodiment 3 in that, in this embodiment, a display module 400 is installed on the plastic air duct 200 for displaying function values, and the display module 400 may be an LED display screen.

[0061] Since the display module 400 is installed on the plastic duct 200, if the imitation glass refrigerator duct decorative panel 300 is silk-screened, it will affect the display effect of the display module 400. In order to achieve the purpose of "when not lit, it is bright silver and the display screen behind it cannot be seen, and when lit, the content of the display module behind the panel can be displayed", the present embodiment also provides a refrigerator duct assembly method, the method includes the following steps: before silk-screen printing, a non-silk-screen printing area is reserved on the imitation glass refrigerator duct decorative panel 300, marked as a display window 600, and a one-way transparent bright silver film 500 is pasted behind the non-silk-screen printing area. During the silk-screen printing process, no ink is printed on the non-silk-screen printing area. After the silk-screen printing is completed, a decorative panel with a display window 600 is obtained, and the decorative panel is fixed to the plastic duct 200 by pasting and / or snapping to assemble into a refrigerator duct.

[0062] Specifically, the size of the non-silk-line printing area is determined by the size of the display area, and the position of the non-silk-line printing area corresponds to the position of the display module 400 .

[0063] In actual application, through the display window 600, when the display module 400 is not lit, the light outside is strong, and the dark side cannot be seen from the strong light side. When the display module 400 is lit and the brightness is higher than that outside, the content of the display module 400 can be seen.

[0064] Example 5

[0065] The present embodiment provides a refrigerator air duct, comprising a plastic air duct and a glass-like refrigerator air duct decorative panel arranged on the front side of the plastic air duct. The glass-like refrigerator air duct decorative panel is prepared by a manufacturing method of a glass-like refrigerator air duct decorative panel provided in Example 1. In the present embodiment, the glass-like refrigerator air duct decorative panel is adhered to the plastic air duct by tape.

[0066] Specifically, this embodiment provides a method for assembling a refrigerator air duct, the method comprising the following steps:

[0067] S1. Use multiple sections of PET double-sided tape 700 to adhere to the imitation glass refrigerator air duct decorative panel, and the multiple sections of PET double-sided tape 700 form a "mesh" character on the imitation glass refrigerator air duct decorative panel;

[0068] S2. Paste and press the glass-like refrigerator air duct decorative panel with multiple sections of PET double-sided tape 700 onto the plastic air duct.

[0069] In this embodiment, the plastic air duct and the imitation glass refrigerator air duct decorative panel are connected by gluing using PET double-sided tape 700. Compared with the prior art in which the plastic air duct and the glass panel are connected using VHB tape, PET double-sided tape 700 is more cost-effective.

[0070] Example 6

[0071] like Figure 4 As shown, this embodiment provides a refrigerator air duct, including a plastic air duct and a glass-like refrigerator air duct decorative panel arranged on the front side of the plastic air duct, the glass-like refrigerator air duct decorative panel is prepared by a manufacturing method of a glass-like refrigerator air duct decorative panel provided in Example 1. In this embodiment, the glass-like refrigerator air duct decorative panel is adhered to the plastic air duct by tape.

[0072] Specifically, this embodiment further provides a method for assembling a refrigerator air duct, which is different from Embodiment 5 in that the method for assembling a refrigerator air duct provided in this embodiment includes the following steps:

[0073] S1, using multiple sections of PET double-sided tape 700 to adhere to the plastic air duct, and the multiple sections of PET double-sided tape 700 form a "mesh"-shaped structure 101 on the plastic air duct;

[0074] S2. The plastic air duct with multiple sections of PET double-sided tape 700 is pasted and pressed onto the glass-like refrigerator air duct decorative panel.

[0075] In this embodiment, the plastic air duct and the imitation glass refrigerator air duct decorative panel are connected by gluing using PET double-sided tape 700. Compared with the prior art in which the plastic air duct and the glass panel are connected using VHB tape, PET double-sided tape 700 is more cost-effective.

[0076] The invention provides a manufacturing method and a manufacturing device for a glass-like refrigerator air duct decorative panel and a refrigerator air duct. Plastic particles are dried, stirred, heated to melt, extruded and rolled to prepare a plate. The plate is cooled, shaped and dried, and then a hardening liquid is coated on the surface. Finally, the plate is cured to prepare a glass-like refrigerator air duct decorative panel. The appearance of the decorative panel is exactly the same as that of glass, and the cost is significantly lower than that of a glass panel. The defect that the plastic surface is not scratch-resistant is overcome. The process flow is simple, and a hardening liquid is coated on the surface of the prepared plate, so that the surface of the plate obtains a high-hardness anti-scratch coating, which greatly improves its wear resistance and scratch resistance. The lightweight design reduces the load-bearing capacity of the air duct component. The glass-like refrigerator air duct decorative panel can have a display window as a display area and has a display function.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for manufacturing a glass-like refrigerator air duct decorative panel, characterized in that: The manufacturing method comprises the following steps: S1. After drying, add the plastic particles into the hopper of the extruder; S2, the plastic particles are stirred, heated and melted in an extruder, extruded through an extrusion die (1), and then calendered by a hot pressing roller (2) to obtain a sheet; S3, the plate is cooled and shaped in a constant temperature cold water pool (5), and then dried in an oven (7). A hardening liquid is coated on the surface of the plate through a coating mechanism (100), and finally enters a UV curing chamber (13) for curing to prepare a glass-like refrigerator air duct decorative panel.

2. The method for manufacturing a glass-like refrigerator air duct decorative panel according to claim 1, characterized in that: The plastic particles are highly transparent plastic particles.

3. The method for manufacturing a glass-like refrigerator air duct decorative panel according to claim 2, characterized in that: In the high-transmittance plastic particles, the high-transmittance plastic is GPPS or ABS.

4. A manufacturing device for a glass-like refrigerator air duct decorative panel according to any one of claims 1 to 3, characterized in that: The invention comprises an extrusion die head (1), a hot pressing roller (2), a constant temperature cold water pool (5), an oven (7), a coating mechanism (100) and a UV curing chamber (13) which are arranged in sequence from left to right.

5. The manufacturing device of the glass-like refrigerator air duct decorative panel according to claim 4, characterized in that: A guide roller 1 (4) and a guide roller group (6) are respectively provided at the left end and the right end above the constant temperature cold water pool (5).

6. The manufacturing device of the glass-like refrigerator air duct decorative panel according to claim 5, characterized in that: The guide roller group (6) comprises a plurality of guide rollers (61) arranged in parallel.

7. The manufacturing device of the glass-like refrigerator air duct decorative panel according to claim 6, characterized in that: A plurality of guide rollers 2 (61) are arranged at intervals from left to right.

8. The manufacturing device of the glass-like refrigerator air duct decorative panel according to claim 4, characterized in that: The number of the coating mechanisms (100) is no less than one.

9. The manufacturing device of the glass-like refrigerator air duct decorative panel according to claim 4, characterized in that: The coating mechanism (100) comprises a material storage tank (10), a coating roller (11) arranged below the material storage tank (10), and a metering roller (9); the material storage tank (10) contains a hardening liquid; A gap is formed between the coating roller (11) and the metering roller (9) for the hardening liquid to flow out; A baffle (12) is provided at the lower end of the coating roller (11).

10. A refrigerator air duct, characterized in that: The invention comprises a plastic air duct and a glass-like refrigerator air duct decorative panel arranged on the front side of the plastic air duct, wherein the glass-like refrigerator air duct decorative panel is prepared by the manufacturing method of the glass-like refrigerator air duct decorative panel according to any one of claims 1 to 3.

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