Rapid forming device and forming method for environment-friendly plastic product

By combining injection molding and blistering processes, heating, traction and air extraction technologies are used to solve the defects and paint pollution problems in injection molding, and plastic shell molding without spray paint, high finish and high strength is achieved.

CN119458867APending Publication Date: 2025-02-18SHENZHEN HEMEI RISHENG TECH CO LTD
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Patent Information

Application Number
CN202411687850.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

The existing injection molding technology is prone to defects during the molding of plastic shells, such as dents, sprinkles, flow marks and squids, and needs to be painted to improve the surface finish, resulting in environmental pollution.

Method used

Combining the injection molding process and blistering process, by setting a heating mechanism, traction mechanism and air extraction mechanism on the bottom mold, weld and molding of structural parts and extruded films can be achieved, and injection molding defects can be avoided, and cooling by vacuum exhaust and blowing. Technology, achieve high finish shell molding.

Benefits of technology

The high-quality shell molding without spray paint is achieved, which reduces the environmental harm of spray paint, avoids defect problems in injection molding, and increases the strength and cooling speed of the shell.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of plastics, in particular to an environment-friendly plastic product rapid forming device which comprises a bottom die, a heating mechanism, a heating moving mechanism and a traction mechanism. The heating mechanism can heat the upper end of the structural part and the rubber sheet so that the structural part can be welded to the extruded shell, and the bottom die is provided with an air exhaust mechanism so that the space between the bottom die and the extruded shell can be vacuumized when the structural part and the extruded shell are welded so that the shell can be formed. According to the invention, the structural member and the film are welded together, so that the shell does not have the defects of injection molding, such as dents, material flowers, flow marks, burrs and the like caused by shrinkage, meanwhile, the surface smoothness of the shell is high, paint spraying treatment is not needed, the harm of paint spraying to the environment is reduced, and the influence of paint falling on the environment in the use process is also reduced; and meanwhile, structural parts are perfectly arranged and are just like injection molding.
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Description

Technical Field

[0001] The present invention relates to the technical field of plastics, and in particular to a rapid prototyping device and a prototyping method for environmentally friendly plastic products. Background Art

[0002] On the housing of electronic equipment, since the surface formed by the mold is relatively rough and easily sticky to dust and oil, a layer of paint is usually sprayed on the surface to improve the surface roughness. This causes the paint to volatilize, which has a certain impact on the environment. If the smoothness that can be achieved by spraying paint can be achieved without spraying paint, it will be an improvement in environmental protection. However, the product formed by blister molding can achieve this effect, but the structural part of the housing cannot be formed by the blister molding process alone, and the structural part of the housing needs to be formed by the injection molding process. The present invention combines the injection molding process and the blister molding process to manufacture the housing. Summary of the invention

[0003] In order to solve the problems in the above-mentioned background technology, the present invention provides an environmentally friendly plastic product rapid prototyping device and a prototyping method, which are used in plastic production and solve the problems of many molding defects and the need for painting in the prior art injection molding.

[0004] The solution adopted by the present invention to solve its technical problems is: an environmentally friendly plastic product rapid prototyping device, including a bottom mold, a heating mechanism, a heating moving mechanism for moving the heating mechanism relative to the bottom mold, and a traction mechanism, wherein the bottom mold is provided with a groove for placing a structural member, the bottom mold is directly or indirectly connected to the heating mechanism and the traction mechanism, the traction mechanism can pull the extruded sheet film to the top of the bottom mold, the heating mechanism can heat the upper end of the structural member and the sheet film so that the structural member and the extruded shell are welded, the heating moving mechanism can make the heating mechanism move horizontally and up and down relative to the bottom mold so that the heating mechanism is moved away from the top of the bottom mold when the structural member and the extruded shell are welded, the bottom mold is provided with an exhaust mechanism so that when the structural member and the extruded shell are welded, the space between the bottom mold and the extruded shell is evacuated to form the shell, and a positioning structure is provided between the bottom mold and the heating mechanism so that the heating mechanism can be aligned with the structural member.

[0005] In the above structure, the bottom mold is provided with an ejection mechanism so as to eject the structural member and the shell out of the bottom mold.

[0006] The above structure also includes a blowing mechanism for blowing air toward the shell to accelerate the cooling of the shell.

[0007] In the above structure, the heating moving mechanism is provided with a heating element for heating the structural parts, a heating lifting mechanism for lifting the moving mechanism, and a heating horizontal moving mechanism for horizontally moving the moving mechanism. The heating lifting mechanism is directly or indirectly connected to the bottom mold, the heating horizontal moving mechanism is installed on the heating lifting mechanism, and the heating element is installed on the heating horizontal moving mechanism.

[0008] In the above structure, the traction mechanism is provided with a clamp for clamping the film, a traction lifting mechanism for lifting the traction mechanism, and a traction horizontal mechanism for the traction mechanism to perform horizontal traction movement. The traction lifting mechanism is directly or indirectly connected to the bottom mold, the traction horizontal mechanism is installed on the traction lifting mechanism, and the clamp is installed on the traction horizontal mechanism.

[0009] In the above structure, the heating mechanism is provided with a temperature sensor to control the temperature of the heating element.

[0010] A device for rapid prototyping of environmentally friendly plastic products, comprising a bottom mold, a heating mechanism, a heating moving mechanism for moving the heating mechanism relative to the bottom mold, a traction mechanism, and an air blowing mechanism, wherein the bottom mold is provided with a groove for placing a structural member, the bottom mold is directly or indirectly connected to the heating mechanism and the traction mechanism, the traction mechanism can pull the extruded sheet film to the top of the bottom mold, the heating mechanism can heat the upper end of the structural member and the film so that the structural member and the extruded shell are welded, the heating moving mechanism can make the heating mechanism move horizontally and up and down relative to the bottom mold so that the heating mechanism is moved away from the top of the bottom mold when the structural member and the extruded shell are welded, the bottom mold is provided with an exhaust mechanism so that when the structural member and the extruded shell are welded, the space between the bottom mold and the extruded shell is evacuated to form a vacuum to shape the shell, and a positioning mechanism is provided between the bottom mold and the heating mechanism. The structure is such that the heating mechanism can be aligned with the structural member, the bottom mold is provided with an ejection mechanism to eject the structural member and the shell out of the bottom mold, the blowing mechanism can blow air toward the shell to accelerate the cooling of the shell, the heating moving mechanism is provided with a heating element for heating the structural member, a heating lifting mechanism for lifting the moving mechanism, and a heating horizontal moving mechanism for horizontally moving the moving mechanism, the heating lifting mechanism is directly or indirectly connected to the bottom mold, the heating horizontal moving mechanism is installed on the heating lifting mechanism, the heating element is installed on the heating horizontal moving mechanism, the traction mechanism is provided with a clamp for clamping the film, a traction lifting mechanism for lifting the traction mechanism, and a traction horizontal mechanism for horizontal traction movement of the traction mechanism, the traction lifting mechanism is directly or indirectly connected to the bottom mold, the traction horizontal mechanism is installed on the traction lifting mechanism, and the clamp is installed on the traction horizontal mechanism.

[0011] A rapid prototyping method for environmentally friendly plastic products comprises the following steps:

[0012] 1) Place the structural parts in the grooves on the bottom mold;

[0013] 2) Place the film, clamp it with a traction mechanism, and pull it to the top of the bottom mold;

[0014] 3) Heating, moving the heating moving mechanism to the top of the bottom mold and below the film, using the heating moving mechanism to heat the upper end surface of the structural member and the film, so that the upper end surface of the structural member and the film are melted;

[0015] 4) Stop heating and move the heating moving mechanism away from above the bottom mold;

[0016] 5) Blistering: use the vacuum mechanism of the bottom mold to create a vacuum between the bottom mold and the film, so that the film is closely attached to the top of the bottom mold;

[0017] 6) Excision: remove the excess film;

[0018] 7) Cooling: Use the air blowing mechanism to blow air at the film to cool it down;

[0019] 8) Ejection: Use the ejection mechanism to eject the film and structural parts to obtain the desired shell.

[0020] In summary, the beneficial effects of the present invention are as follows: by fusing the structural parts of the injection molding process with the film through the vacuum forming process, the shell is free from the defects of injection molding, such as dents, material flowers, flow marks, burrs, etc. due to shrinkage, and at the same time, the surface finish of the shell is high, and no painting is required, thereby reducing the harm of painting to the environment, and also reducing the impact of paint falling off during use on the environment, which has a greater positive effect on environmental protection. At the same time, the structural parts are very well arranged, just like injection molding.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 An exploded view of the present invention;

[0024] Figure 3 It is a three-dimensional diagram from another angle of the present invention.

[0025] In the figure: 1. bottom mold; 2. heating mechanism; 3. heating moving mechanism; 4. groove; 5. shell; 6. structural part; 7. heating element; 8. heating lifting mechanism; 9. heating horizontal moving mechanism; 10. traction mechanism; 11. clamp; 12. traction lifting mechanism; 13. traction horizontal mechanism. DETAILED DESCRIPTION

[0026] In order to make the content of the present invention more clearly understood, the present invention is further described below based on specific embodiments in conjunction with the accompanying drawings.

[0027] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0028] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] Referring to the accompanying drawings, an environmentally friendly plastic product rapid prototyping device includes a bottom mold 1, a heating mechanism 2, a heating moving mechanism 3 for moving the heating mechanism 2 relative to the bottom mold 1, and a traction mechanism 10, wherein the bottom mold 1 is provided with a groove 4 for placing a structural member 6, the bottom mold 1 is directly or indirectly connected to the heating mechanism 2 and the traction mechanism 10, the traction mechanism 10 can pull the extruded sheet film to the top of the bottom mold 1, the heating mechanism 2 can heat the upper end of the structural member 6 and the sheet film so that the structural member 6 and the extruded shell 5 are welded, the heating moving mechanism 3 can make the heating mechanism 2 move horizontally and up and down relative to the bottom mold 1 so that the heating mechanism 2 is moved away from the top of the bottom mold 1 when the structural member 6 and the extruded shell 5 are welded, the bottom mold 1 is provided with an exhaust mechanism so that when the structural member 6 and the extruded shell 5 are welded, the space between the bottom mold 1 and the extruded shell 5 is evacuated to form the shell 6, and a positioning structure is provided between the bottom mold 1 and the heating mechanism 2 so that the heating mechanism 2 can be aligned with the structural member 6.

[0030] Furthermore, the bottom mold 1 is provided with an ejection mechanism to eject the structural member 6 and the housing 5 out of the bottom mold 1 .

[0031] Furthermore, an air blowing mechanism is included to blow air toward the shell 5 to accelerate the cooling of the shell 5 .

[0032] Furthermore, the heating movable mechanism 3 is provided with a heating element 7 for heating the structural member, a heating lifting mechanism 8 for lifting the movable mechanism, and a heating horizontal movable mechanism 9 for horizontally moving the movable mechanism. The heating lifting mechanism 8 is directly or indirectly connected to the bottom mold 1, the heating horizontal movable mechanism 9 is installed on the heating lifting mechanism 8, and the heating element 7 is installed on the heating horizontal movable mechanism 9.

[0033] Furthermore, the heating mechanism 2 is provided with a temperature sensor in order to control the temperature of the heating element 7 .

[0034] Furthermore, the traction mechanism 10 is provided with a clamp 11 for clamping the film, a traction lifting mechanism 12 for lifting and lowering the traction mechanism 10, and a traction horizontal mechanism 13 for horizontal traction movement of the traction mechanism 10. The traction lifting mechanism 12 is directly or indirectly connected to the bottom mold 1, the traction horizontal mechanism 13 is installed on the traction lifting mechanism 12, and the clamp 11 is installed on the traction horizontal mechanism 13.

[0035] A rapid prototyping method for environmentally friendly plastic products comprises the following steps:

[0036] 1) placing the structural member 6 in the groove on the bottom mold 1;

[0037] 2) placing the film, clamping the film with the traction mechanism 10, and traction it to the top of the bottom mold 1;

[0038] 3) Heating, moving the heating moving mechanism 3 to the top of the bottom mold 1 and below the film, using the heating moving mechanism 3 to make the heating mechanism 2 heat the upper end surface of the structural member 6 and the film, so that the upper end surface of the structural member 6 and the film are melted;

[0039] 4) Stop heating and move the heating moving mechanism 3 away from above the bottom mold 1;

[0040] 5) Vacuum forming: use the vacuum mechanism of the bottom mold 1 to create a vacuum between the bottom mold 1 and the film, so that the film is closely attached to the top of the bottom mold 1;

[0041] 6) Excision: remove the excess film;

[0042] 7) Cooling: Use the air blowing mechanism to blow air at the film to cool it down;

[0043] 8) Ejection: Use the ejection mechanism to eject the film and the structural part 6 to obtain the desired plastic part.

[0044] The present invention welds the structural member 6 of the injection molding process with the film through the blister molding process, thereby eliminating injection molding defects such as dents, material flowers, flow marks, burrs, etc. due to shrinkage. At the same time, the surface finish of the shell 5 is high, and no painting is required, which reduces the harm of painting to the environment and the impact of paint falling during use. It has a great positive effect on environmental protection. At the same time, the structural members are well arranged, just like injection molding. The film is formed from a flat plate into a three-dimensional shell 5 by blister molding, so that the internal structure design is independent of the shell 5, and the internal design has no effect on the appearance. The present invention is particularly suitable for large-area shells, such as luggage products. The shell 5 specifically has the following beneficial effects:

[0045] 1. The housing 5 is formed by fusing the structural member 6 with the extruded film, so that the housing 5 does not have defects of injection molding, such as dents, material flowers, flow marks, flashing, etc. due to shrinkage;

[0046] 2. By welding the structural member 6 and the shell 5 together, the surface finish of the shell 5 is high, and no painting is required, thereby reducing the harm of painting to the environment;

[0047] 3. By setting the heating mechanism 2, the structural member 6 and the extruded shell 5 are welded together, which has high strength and is not easy to break;

[0048] 4. By setting the air blowing mechanism, the outer shell 5 is cooled quickly, saving time;

[0049] 5. By molding the outer shell with film, the thickness of the outer shell can be made very thick, and the outer shell and the structural design can be separated without affecting each other, which greatly improves the quality of the product.

[0050] The embodiments described above are only preferred implementation modes of the present invention and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and modifications made by those skilled in the art on the basis of the invention shall fall within the protection scope of the present invention.

Claims

1. An environmentally friendly plastic product rapid prototyping device, characterized by: The invention comprises a bottom mold, a heating mechanism, a heating moving mechanism for moving the heating mechanism relative to the bottom mold, and a traction mechanism, wherein the bottom mold is provided with a groove for placing a structural member, the bottom mold is directly or indirectly connected to the heating mechanism and the traction mechanism, the traction mechanism can pull the extruded sheet film onto the top of the bottom mold, the heating mechanism can heat the upper end of the structural member and the sheet film so that the structural member and the extruded shell are welded, the heating moving mechanism can make the heating mechanism move horizontally and up and down relative to the bottom mold so that the heating mechanism is moved away from the top of the bottom mold when the structural member and the extruded shell are welded, the bottom mold is provided with an exhaust mechanism so that when the structural member and the extruded shell are welded, the space between the bottom mold and the extruded shell is evacuated to form the shell, and a positioning structure is provided between the bottom mold and the heating mechanism so that the heating mechanism can be aligned with the structural member.

2. The environmentally friendly plastic product rapid prototyping device according to claim 1, characterized in that: The bottom mold is provided with an ejection mechanism so as to eject the structural member and the shell out of the bottom mold.

3. The environmentally friendly plastic product rapid prototyping device according to claim 1, characterized in that: An air blowing mechanism is also included to blow air toward the housing to accelerate cooling of the housing.

4. The environmentally friendly plastic product rapid prototyping device according to claim 1, characterized in that: The heating moving mechanism is provided with a heating element for heating the structural parts, a heating lifting mechanism for lifting the moving mechanism, and a heating horizontal moving mechanism for horizontally moving the moving mechanism. The heating lifting mechanism is directly or indirectly connected to the bottom mold, the heating horizontal moving mechanism is installed on the heating lifting mechanism, and the heating element is installed on the heating horizontal moving mechanism.

5. The environmentally friendly plastic product rapid prototyping device according to claim 4, characterized in that: The heating mechanism is provided with a temperature sensor in order to control the temperature of the heating element.

6. The environmentally friendly plastic product rapid prototyping device according to claim 1, characterized in that: The traction mechanism is provided with a clamp for clamping the film, a traction lifting mechanism for lifting the traction mechanism, and a traction horizontal mechanism for the traction mechanism to perform horizontal traction movement. The traction lifting mechanism is directly or indirectly connected to the bottom mold, the traction horizontal mechanism is installed on the traction lifting mechanism, and the clamp is installed on the traction horizontal mechanism.

7. An environmentally friendly plastic product rapid prototyping device, characterized in that: The invention comprises a bottom mold, a heating mechanism, a heating moving mechanism for moving the heating mechanism relative to the bottom mold, a traction mechanism, and an air blowing mechanism, wherein the bottom mold is provided with a groove for placing a structural member, the bottom mold is directly or indirectly connected to the heating mechanism and the traction mechanism, the traction mechanism can pull the extruded sheet film to the top of the bottom mold, the heating mechanism can heat the upper end of the structural member and the film so that the structural member and the extruded shell are welded, the heating moving mechanism can make the heating mechanism move horizontally and up and down relative to the bottom mold so that the heating mechanism is moved away from the top of the bottom mold when the structural member and the extruded shell are welded, the bottom mold is provided with an exhaust mechanism so that when the structural member and the extruded shell are welded, the space between the bottom mold and the extruded shell is evacuated to form the shell, and a positioning structure is provided between the bottom mold and the heating mechanism so that the heating mechanism can The bottom mold is provided with an ejection mechanism to eject the structural member and the shell out of the bottom mold, the blowing mechanism can blow air toward the shell to accelerate the cooling of the shell, the heating moving mechanism is provided with a heating element for heating the structural member, a heating lifting mechanism for lifting the moving mechanism, and a heating horizontal moving mechanism for horizontally moving the moving mechanism, the heating lifting mechanism is directly or indirectly connected to the bottom mold, the heating horizontal moving mechanism is installed on the heating lifting mechanism, the heating element is installed on the heating horizontal moving mechanism, the traction mechanism is provided with a clamp for clamping the film, a traction lifting mechanism for lifting the traction mechanism, and a traction horizontal mechanism for horizontal traction movement of the traction mechanism, the traction lifting mechanism is directly or indirectly connected to the bottom mold, the traction horizontal mechanism is installed on the traction lifting mechanism, and the clamp is installed on the traction horizontal mechanism.

8. The environmentally friendly plastic product rapid prototyping method according to claim 7, characterized in that: The following steps are involved: 1) Place the structural parts in the grooves on the bottom mold; 2) Place the film, clamp it with a traction mechanism, and pull it to the top of the bottom mold; 3) Heating, moving the heating moving mechanism to the top of the bottom mold and below the film, using the heating moving mechanism to heat the upper end surface of the structural member and the film, so that the upper end surface of the structural member and the film are melted; 4) Stop heating and move the heating moving mechanism away from above the bottom mold; 5) Blistering: use the vacuum mechanism of the bottom mold to create a vacuum between the bottom mold and the film, so that the film is closely attached to the top of the bottom mold; 6) Excision: remove the excess film; 7) Cooling: Use the air blowing mechanism to blow air at the film to cool it down; 8) Ejection: Use the ejection mechanism to eject the film and structural parts to obtain the desired shell.